Add Atmel Studio projects for ATMega4809 and AVR128DA48 (#159)

* Added explicit cast to allow roll over and avoid integer promotion during cycles counters comparison in recmutex.c. * Fixed type mismatch between declaration and definition of function xAreSemaphoreTasksStillRunning( void ). * Added Atmel Studio demo projects for ATMega4809 and AVR128DA48. * Per https://www.freertos.org/upgrading-to-FreeRTOS-V8.html, I'm updating portBASE_TYPE to BaseType_t. Signed-off-by: Yuhui Zheng <10982575+yuhui-zheng@users.noreply.github.com> * Update register test for ATmega4809 - to cover r28, r29, r31. - call public API taskYIELD() instead of portYIELD(). * Update ATmega4809 readme.md to include info for serial port setup, and minor wording fix. Co-authored-by: Alexandru Niculae - M17336 <alexandru.niculae@microchip.com>
5 years ago · 915af50524
parent 4a7a48790d
commit 915af50524
30 changed files with 3847 additions and 2 deletions
--- a/FreeRTOS/Demo/AVR_ATMega4809_Atmel_Studio/RTOSDemo.atsln
+++ b/FreeRTOS/Demo/AVR_ATMega4809_Atmel_Studio/RTOSDemo.atsln
@ -0,0 +1,22 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Atmel Studio Solution File, Format Version 11.00
+VisualStudioVersion = 14.0.23107.0
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{54F91283-7BC4-4236-8FF9-10F437C3AD48}") = "RTOSDemo", "RTOSDemo\RTOSDemo.cproj", "{DCE6C7E3-EE26-4D79-826B-08594B9AD897}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|AVR = Debug|AVR
+		Release|AVR = Release|AVR
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{DCE6C7E3-EE26-4D79-826B-08594B9AD897}.Debug|AVR.ActiveCfg = Debug|AVR
+		{DCE6C7E3-EE26-4D79-826B-08594B9AD897}.Debug|AVR.Build.0 = Debug|AVR
+		{DCE6C7E3-EE26-4D79-826B-08594B9AD897}.Release|AVR.ActiveCfg = Release|AVR
+		{DCE6C7E3-EE26-4D79-826B-08594B9AD897}.Release|AVR.Build.0 = Release|AVR
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+EndGlobal
--- a/FreeRTOS/Demo/AVR_ATMega4809_Atmel_Studio/RTOSDemo/FreeRTOSConfig.h
+++ b/FreeRTOS/Demo/AVR_ATMega4809_Atmel_Studio/RTOSDemo/FreeRTOSConfig.h
@ -0,0 +1,131 @@
+/*
+ * FreeRTOS Kernel V10.0.0
+ * Copyright (C) 2017 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+ * the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software. If you wish to use our Amazon
+ * FreeRTOS name, please do so in a fair use way that does not cause confusion.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+ * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * http://www.FreeRTOS.org
+ * http://aws.amazon.com/freertos
+ *
+ * 1 tab == 4 spaces!
+ */
+
+#ifndef FREERTOS_CONFIG_H
+#define FREERTOS_CONFIG_H
+
+/*
+ * #define TCB_t to avoid conflicts between the
+ * FreeRTOS task control block type (TCB_t) and the
+ * AVR Timer Counter B type (TCB_t)
+ */
+#define TCB_t avrTCB_t
+#include <avr/io.h>
+#undef TCB_t
+
+/*
+ * Timer instance  |  Value
+ * ----------------|---------
+ *     TCB0        |    0  
+ *     TCB1        |    1  
+ *     TCB2        |    2  
+ *     TCB3        |    3   
+ *     RTC         |    4  
+ */
+
+#define configUSE_TIMER_INSTANCE 0
+#define configUSE_PREEMPTION 1
+
+/* NOTE: You can choose the following clock frequencies (Hz):
+20000000, 10000000, 5000000, 2000000. 
+For other frequency values, update clock_config.h with your own settings. */
+#define configCPU_CLOCK_HZ 10000000
+
+#define configTICK_RATE_HZ 1000
+#define configMAX_PRIORITIES 4
+#define configMINIMAL_STACK_SIZE 110
+#define configMAX_TASK_NAME_LEN 8
+#define configUSE_16_BIT_TICKS 1
+#define configIDLE_SHOULD_YIELD 1
+#define configUSE_TASK_NOTIFICATIONS 1
+#define configUSE_MUTEXES 1
+#define configUSE_RECURSIVE_MUTEXES 1
+#define configUSE_COUNTING_SEMAPHORES 0
+#define configQUEUE_REGISTRY_SIZE 2
+#define configUSE_QUEUE_SETS 0
+#define configUSE_TIME_SLICING 1
+#define configUSE_NEWLIB_REENTRANT 0
+#define configENABLE_BACKWARD_COMPATIBILITY 0
+#define configNUM_THREAD_LOCAL_STORAGE_POINTERS 0
+
+/* Memory allocation related definitions. */
+#define configSUPPORT_STATIC_ALLOCATION 0
+#define configSUPPORT_DYNAMIC_ALLOCATION 1
+#define configTOTAL_HEAP_SIZE 0x1000
+#define configAPPLICATION_ALLOCATED_HEAP 0
+
+/* Hook function related definitions. */
+#define configUSE_IDLE_HOOK 1
+#define configUSE_TICK_HOOK 1
+#define configCHECK_FOR_STACK_OVERFLOW 0
+#define configUSE_MALLOC_FAILED_HOOK 0
+#define configUSE_DAEMON_TASK_STARTUP_HOOK 0
+
+/* Run time and task stats gathering related definitions. */
+#define configGENERATE_RUN_TIME_STATS 0
+#define configUSE_TRACE_FACILITY 0
+#define configUSE_STATS_FORMATTING_FUNCTIONS 0
+
+/* Co-routine related definitions. */
+#define configUSE_CO_ROUTINES 1
+#define configMAX_CO_ROUTINE_PRIORITIES 2
+
+/* Software timer related definitions. */
+#define configUSE_TIMERS 1
+#define configTIMER_TASK_PRIORITY (configMAX_PRIORITIES - 1)
+#define configTIMER_QUEUE_LENGTH 5
+#define configTIMER_TASK_STACK_DEPTH (configMINIMAL_STACK_SIZE * 2)
+
+/* Define to trap errors during development. */
+//#define configASSERT(  x  ) if( ( x ) == 0 ) { asm volatile ("cli"); while(1){ asm volatile ("BREAK"); } }
+
+/* Optional functions - most linkers will remove unused functions anyway. */
+#define INCLUDE_vTaskPrioritySet 1
+#define INCLUDE_uxTaskPriorityGet 0
+#define INCLUDE_vTaskDelete 0
+#define INCLUDE_vTaskSuspend 1
+#define INCLUDE_xResumeFromISR 0
+#define INCLUDE_vTaskDelayUntil 1
+#define INCLUDE_vTaskDelay 1
+#define INCLUDE_xTaskGetSchedulerState 0
+#define INCLUDE_xTaskGetCurrentTaskHandle 0
+#define INCLUDE_uxTaskGetStackHighWaterMark 0
+#define INCLUDE_xTaskGetIdleTaskHandle 0
+#define INCLUDE_eTaskGetState 0
+#define INCLUDE_xEventGroupSetBitFromISR 0
+#define INCLUDE_xTimerPendFunctionCall 0
+#define INCLUDE_xTaskAbortDelay 0
+#define INCLUDE_xTaskGetHandle 0
+#define INCLUDE_xTaskResumeFromISR 0
+
+#define pdMS_TO_TICKS(xTimeInMs) ((TickType_t)(((uint32_t)(xTimeInMs) * (uint32_t)configTICK_RATE_HZ) / (uint32_t)1000))
+
+#define recmuRECURSIVE_MUTEX_TEST_TASK_STACK_SIZE (configMINIMAL_STACK_SIZE) * 2
+
+
+#endif /* FREERTOS_CONFIG_H */
--- a/FreeRTOS/Demo/AVR_ATMega4809_Atmel_Studio/RTOSDemo/ParTest/ParTest.c
+++ b/FreeRTOS/Demo/AVR_ATMega4809_Atmel_Studio/RTOSDemo/ParTest/ParTest.c
@ -0,0 +1,88 @@
+/*
+ * FreeRTOS Kernel V10.3.0
+ * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+ * the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+ * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * http://www.FreeRTOS.org
+ * http://aws.amazon.com/freertos
+ *
+ * 1 tab == 4 spaces!
+ */
+
+#include "FreeRTOS.h"
+#include "task.h"
+#include "partest.h"
+
+/*-----------------------------------------------------------
+ * Simple parallel port IO routines.
+ *-----------------------------------------------------------*/
+
+#define partstALL_BITS_OUTPUT			( ( unsigned char ) 0xff )
+#define partstALL_OUTPUTS_OFF			( ( unsigned char ) 0xff )
+#define partstMAX_OUTPUT_LED			( ( unsigned char ) 7 )
+
+/*-----------------------------------------------------------*/
+
+void vParTestInitialise( void )
+{
+	PORTF.DIRSET = partstALL_BITS_OUTPUT;
+	PORTF.OUTCLR = partstALL_OUTPUTS_OFF;
+}
+/*-----------------------------------------------------------*/
+
+void vParTestSetLED( UBaseType_t uxLED, BaseType_t xValue )
+{
+unsigned char ucBit = ( unsigned char ) 1;
+
+	if( uxLED <= partstMAX_OUTPUT_LED )
+	{
+		ucBit <<= uxLED;
+
+		vTaskSuspendAll();
+		{
+			if( xValue == pdTRUE )
+			{
+				PORTF.OUTSET = ucBit;
+			}
+			else
+			{
+				PORTF.OUTCLR = ucBit;
+			}
+
+		}
+		xTaskResumeAll();
+	}
+}
+/*-----------------------------------------------------------*/
+
+void vParTestToggleLED( UBaseType_t uxLED )
+{
+unsigned char ucBit;
+
+	if( uxLED <= partstMAX_OUTPUT_LED )
+	{
+		ucBit = ( ( unsigned char ) 1 ) << uxLED;
+
+		vTaskSuspendAll();
+		{
+			PORTF.OUTTGL = ucBit;
+		}
+		xTaskResumeAll();			
+	}
+}
--- a/FreeRTOS/Demo/AVR_ATMega4809_Atmel_Studio/RTOSDemo/RTOSDemo.componentinfo.xml
+++ b/FreeRTOS/Demo/AVR_ATMega4809_Atmel_Studio/RTOSDemo/RTOSDemo.componentinfo.xml
@ -0,0 +1,86 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Store xmlns:i="http://www.w3.org/2001/XMLSchema-instance" xmlns="AtmelPackComponentManagement">
+	<ProjectComponents>
+		<ProjectComponent z:Id="i1" xmlns:z="http://schemas.microsoft.com/2003/10/Serialization/">
+			<CApiVersion></CApiVersion>
+			<CBundle></CBundle>
+			<CClass>Device</CClass>
+			<CGroup>Startup</CGroup>
+			<CSub></CSub>
+			<CVariant></CVariant>
+			<CVendor>Atmel</CVendor>
+			<CVersion>1.4.0</CVersion>
+			<DefaultRepoPath>C:/Program Files (x86)\Atmel\Studio\7.0\Packs</DefaultRepoPath>
+			<DependentComponents xmlns:d4p1="http://schemas.microsoft.com/2003/10/Serialization/Arrays" />
+			<Description></Description>
+			<Files xmlns:d4p1="http://schemas.microsoft.com/2003/10/Serialization/Arrays">
+				<d4p1:anyType i:type="FileInfo">
+					<AbsolutePath>C:/Program Files (x86)\Atmel\Studio\7.0\Packs\Atmel\ATmega_DFP\1.4.351\include</AbsolutePath>
+					<Attribute></Attribute>
+					<Category>include</Category>
+					<Condition>C</Condition>
+					<FileContentHash i:nil="true" />
+					<FileVersion></FileVersion>
+					<Name>include</Name>
+					<SelectString></SelectString>
+					<SourcePath></SourcePath>
+				</d4p1:anyType>
+				<d4p1:anyType i:type="FileInfo">
+					<AbsolutePath>C:/Program Files (x86)\Atmel\Studio\7.0\Packs\Atmel\ATmega_DFP\1.4.351\include\avr\iom4809.h</AbsolutePath>
+					<Attribute></Attribute>
+					<Category>header</Category>
+					<Condition>C</Condition>
+					<FileContentHash>E4neUp85mkH0Fhc77PxxYw==</FileContentHash>
+					<FileVersion></FileVersion>
+					<Name>include/avr/iom4809.h</Name>
+					<SelectString></SelectString>
+					<SourcePath></SourcePath>
+				</d4p1:anyType>
+				<d4p1:anyType i:type="FileInfo">
+					<AbsolutePath>C:/Program Files (x86)\Atmel\Studio\7.0\Packs\Atmel\ATmega_DFP\1.4.351\templates\main.c</AbsolutePath>
+					<Attribute>template</Attribute>
+					<Category>source</Category>
+					<Condition>C Exe</Condition>
+					<FileContentHash>nTDuY+zX/oebd9WHaLZRrg==</FileContentHash>
+					<FileVersion></FileVersion>
+					<Name>templates/main.c</Name>
+					<SelectString>Main file (.c)</SelectString>
+					<SourcePath></SourcePath>
+				</d4p1:anyType>
+				<d4p1:anyType i:type="FileInfo">
+					<AbsolutePath>C:/Program Files (x86)\Atmel\Studio\7.0\Packs\Atmel\ATmega_DFP\1.4.351\templates\main.cpp</AbsolutePath>
+					<Attribute>template</Attribute>
+					<Category>source</Category>
+					<Condition>C Exe</Condition>
+					<FileContentHash>mkKaE95TOoATsuBGv6jmxg==</FileContentHash>
+					<FileVersion></FileVersion>
+					<Name>templates/main.cpp</Name>
+					<SelectString>Main file (.cpp)</SelectString>
+					<SourcePath></SourcePath>
+				</d4p1:anyType>
+				<d4p1:anyType i:type="FileInfo">
+					<AbsolutePath>C:/Program Files (x86)\Atmel\Studio\7.0\Packs\Atmel\ATmega_DFP\1.4.351\gcc\dev\atmega4809</AbsolutePath>
+					<Attribute></Attribute>
+					<Category>libraryPrefix</Category>
+					<Condition>GCC</Condition>
+					<FileContentHash i:nil="true" />
+					<FileVersion></FileVersion>
+					<Name>gcc/dev/atmega4809</Name>
+					<SelectString></SelectString>
+					<SourcePath></SourcePath>
+				</d4p1:anyType>
+			</Files>
+			<PackName>ATmega_DFP</PackName>
+			<PackPath>C:/Program Files (x86)/Atmel/Studio/7.0/Packs/Atmel/ATmega_DFP/1.4.351/Atmel.ATmega_DFP.pdsc</PackPath>
+			<PackVersion>1.4.351</PackVersion>
+			<PresentInProject>true</PresentInProject>
+			<ReferenceConditionId>ATmega4809</ReferenceConditionId>
+			<RteComponents xmlns:d4p1="http://schemas.microsoft.com/2003/10/Serialization/Arrays">
+				<d4p1:string></d4p1:string>
+			</RteComponents>
+			<Status>Resolved</Status>
+			<VersionMode>Fixed</VersionMode>
+			<IsComponentInAtProject>true</IsComponentInAtProject>
+		</ProjectComponent>
+	</ProjectComponents>
+</Store>
--- a/FreeRTOS/Demo/AVR_ATMega4809_Atmel_Studio/RTOSDemo/RTOSDemo.cproj
+++ b/FreeRTOS/Demo/AVR_ATMega4809_Atmel_Studio/RTOSDemo/RTOSDemo.cproj
@ -0,0 +1,372 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003" ToolsVersion="14.0">
+  <PropertyGroup>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectVersion>7.0</ProjectVersion>
+    <ToolchainName>com.Atmel.AVRGCC8.C</ToolchainName>
+    <ProjectGuid>dce6c7e3-ee26-4d79-826b-08594b9ad897</ProjectGuid>
+    <avrdevice>ATmega4809</avrdevice>
+    <avrdeviceseries>none</avrdeviceseries>
+    <OutputType>Executable</OutputType>
+    <Language>C</Language>
+    <OutputFileName>$(MSBuildProjectName)</OutputFileName>
+    <OutputFileExtension>.elf</OutputFileExtension>
+    <OutputDirectory>$(MSBuildProjectDirectory)\$(Configuration)</OutputDirectory>
+    <AssemblyName>ATmega4809_FreeRTOS_Blinky</AssemblyName>
+    <Name>RTOSDemo</Name>
+    <RootNamespace>ATmega4809_FreeRTOS_Blinky</RootNamespace>
+    <ToolchainFlavour>Native</ToolchainFlavour>
+    <KeepTimersRunning>true</KeepTimersRunning>
+    <OverrideVtor>false</OverrideVtor>
+    <CacheFlash>true</CacheFlash>
+    <ProgFlashFromRam>true</ProgFlashFromRam>
+    <RamSnippetAddress>0x20000000</RamSnippetAddress>
+    <UncachedRange />
+    <preserveEEPROM>true</preserveEEPROM>
+    <OverrideVtorValue>exception_table</OverrideVtorValue>
+    <BootSegment>2</BootSegment>
+    <ResetRule>0</ResetRule>
+    <eraseonlaunchrule>0</eraseonlaunchrule>
+    <EraseKey />
+    <AsfFrameworkConfig>
+      <framework-data xmlns="">
+        <options />
+        <configurations />
+        <files />
+        <documentation help="" />
+        <offline-documentation help="" />
+        <dependencies>
+          <content-extension eid="atmel.asf" uuidref="Atmel.ASF" version="3.46.0" />
+        </dependencies>
+      </framework-data>
+    </AsfFrameworkConfig>
+    <avrtool>com.atmel.avrdbg.tool.nedbg</avrtool>
+    <avrtoolserialnumber>ATML3094051800001616</avrtoolserialnumber>
+    <avrdeviceexpectedsignature>0x1E9651</avrdeviceexpectedsignature>
+    <avrtoolinterface>UPDI</avrtoolinterface>
+    <com_atmel_avrdbg_tool_nedbg>
+      <ToolOptions>
+        <InterfaceProperties>
+          <UpdiClock>750000</UpdiClock>
+        </InterfaceProperties>
+        <InterfaceName>UPDI</InterfaceName>
+      </ToolOptions>
+      <ToolType>com.atmel.avrdbg.tool.nedbg</ToolType>
+      <ToolNumber>ATML3094051800001616</ToolNumber>
+      <ToolName>nEDBG</ToolName>
+    </com_atmel_avrdbg_tool_nedbg>
+    <avrtoolinterfaceclock>750000</avrtoolinterfaceclock>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)' == 'Release' ">
+    <ToolchainSettings>
+      <AvrGcc>
+        <avrgcc.common.Device>-mmcu=atmega4809 -B "%24(PackRepoDir)\Atmel\ATmega_DFP\1.4.351\gcc\dev\atmega4809"</avrgcc.common.Device>
+        <avrgcc.common.outputfiles.hex>True</avrgcc.common.outputfiles.hex>
+        <avrgcc.common.outputfiles.lss>True</avrgcc.common.outputfiles.lss>
+        <avrgcc.common.outputfiles.eep>True</avrgcc.common.outputfiles.eep>
+        <avrgcc.common.outputfiles.srec>True</avrgcc.common.outputfiles.srec>
+        <avrgcc.common.outputfiles.usersignatures>False</avrgcc.common.outputfiles.usersignatures>
+        <avrgcc.compiler.general.ChangeDefaultCharTypeUnsigned>True</avrgcc.compiler.general.ChangeDefaultCharTypeUnsigned>
+        <avrgcc.compiler.general.ChangeDefaultBitFieldUnsigned>True</avrgcc.compiler.general.ChangeDefaultBitFieldUnsigned>
+        <avrgcc.compiler.symbols.DefSymbols>
+          <ListValues>
+            <Value>NDEBUG</Value>
+          </ListValues>
+        </avrgcc.compiler.symbols.DefSymbols>
+        <avrgcc.compiler.directories.IncludePaths>
+          <ListValues>
+            <Value>%24(PackRepoDir)\Atmel\ATmega_DFP\1.4.351\include</Value>
+          </ListValues>
+        </avrgcc.compiler.directories.IncludePaths>
+        <avrgcc.compiler.optimization.level>Optimize for size (-Os)</avrgcc.compiler.optimization.level>
+        <avrgcc.compiler.optimization.PackStructureMembers>True</avrgcc.compiler.optimization.PackStructureMembers>
+        <avrgcc.compiler.optimization.AllocateBytesNeededForEnum>True</avrgcc.compiler.optimization.AllocateBytesNeededForEnum>
+        <avrgcc.compiler.warnings.AllWarnings>True</avrgcc.compiler.warnings.AllWarnings>
+        <avrgcc.linker.libraries.Libraries>
+          <ListValues>
+            <Value>libm</Value>
+          </ListValues>
+        </avrgcc.linker.libraries.Libraries>
+        <avrgcc.assembler.general.IncludePaths>
+          <ListValues>
+            <Value>%24(PackRepoDir)\Atmel\ATmega_DFP\1.4.351\include</Value>
+          </ListValues>
+        </avrgcc.assembler.general.IncludePaths>
+      </AvrGcc>
+    </ToolchainSettings>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)' == 'Debug' ">
+    <ToolchainSettings>
+      <AvrGcc>
+        <avrgcc.common.Device>-mmcu=atmega4809 -B "%24(PackRepoDir)\Atmel\ATmega_DFP\1.4.351\gcc\dev\atmega4809"</avrgcc.common.Device>
+        <avrgcc.common.outputfiles.hex>True</avrgcc.common.outputfiles.hex>
+        <avrgcc.common.outputfiles.lss>True</avrgcc.common.outputfiles.lss>
+        <avrgcc.common.outputfiles.eep>True</avrgcc.common.outputfiles.eep>
+        <avrgcc.common.outputfiles.srec>True</avrgcc.common.outputfiles.srec>
+        <avrgcc.common.outputfiles.usersignatures>False</avrgcc.common.outputfiles.usersignatures>
+        <avrgcc.compiler.general.ChangeDefaultCharTypeUnsigned>True</avrgcc.compiler.general.ChangeDefaultCharTypeUnsigned>
+        <avrgcc.compiler.general.ChangeDefaultBitFieldUnsigned>True</avrgcc.compiler.general.ChangeDefaultBitFieldUnsigned>
+        <avrgcc.compiler.symbols.DefSymbols>
+          <ListValues>
+            <Value>DEBUG</Value>
+          </ListValues>
+        </avrgcc.compiler.symbols.DefSymbols>
+        <avrgcc.compiler.directories.IncludePaths>
+          <ListValues>
+            <Value>%24(PackRepoDir)\Atmel\ATmega_DFP\1.4.351\include</Value>
+            <Value>..</Value>
+            <Value>../../../../Source</Value>
+            <Value>../../../../Source/include</Value>
+            <Value>../../../../Source/portable/MemMang</Value>
+            <Value>../../../../Source/portable/GCC/AVR_Mega0</Value>
+            <Value>../../../Common/include</Value>
+          </ListValues>
+        </avrgcc.compiler.directories.IncludePaths>
+        <avrgcc.compiler.optimization.level>Optimize for size (-Os)</avrgcc.compiler.optimization.level>
+        <avrgcc.compiler.optimization.PackStructureMembers>True</avrgcc.compiler.optimization.PackStructureMembers>
+        <avrgcc.compiler.optimization.AllocateBytesNeededForEnum>True</avrgcc.compiler.optimization.AllocateBytesNeededForEnum>
+        <avrgcc.compiler.optimization.DebugLevel>Default (-g2)</avrgcc.compiler.optimization.DebugLevel>
+        <avrgcc.compiler.warnings.AllWarnings>True</avrgcc.compiler.warnings.AllWarnings>
+        <avrgcc.linker.libraries.Libraries>
+          <ListValues>
+            <Value>libm</Value>
+          </ListValues>
+        </avrgcc.linker.libraries.Libraries>
+        <avrgcc.assembler.general.IncludePaths>
+          <ListValues>
+            <Value>%24(PackRepoDir)\Atmel\ATmega_DFP\1.4.351\include</Value>
+          </ListValues>
+        </avrgcc.assembler.general.IncludePaths>
+        <avrgcc.assembler.debugging.DebugLevel>Default (-Wa,-g)</avrgcc.assembler.debugging.DebugLevel>
+      </AvrGcc>
+    </ToolchainSettings>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="..\..\..\Source\include\FreeRTOS.h">
+      <SubType>compile</SubType>
+      <Link>Source\include\FreeRTOS.h</Link>
+    </Compile>
+    <Compile Include="clk_config.h">
+      <SubType>compile</SubType>
+    </Compile>
+    <Compile Include="FreeRTOSConfig.h">
+      <SubType>compile</SubType>
+    </Compile>
+    <Compile Include="main.c">
+      <SubType>compile</SubType>
+    </Compile>
+    <Compile Include="..\..\..\Source\croutine.c">
+      <SubType>compile</SubType>
+      <Link>Source\croutine.c</Link>
+    </Compile>
+    <Compile Include="..\..\..\Source\event_groups.c">
+      <SubType>compile</SubType>
+      <Link>Source\event_groups.c</Link>
+    </Compile>
+    <Compile Include="..\..\..\Source\list.c">
+      <SubType>compile</SubType>
+      <Link>Source\list.c</Link>
+    </Compile>
+    <Compile Include="..\..\..\Source\queue.c">
+      <SubType>compile</SubType>
+      <Link>Source\queue.c</Link>
+    </Compile>
+    <Compile Include="..\..\..\Source\stream_buffer.c">
+      <SubType>compile</SubType>
+      <Link>Source\stream_buffer.c</Link>
+    </Compile>
+    <Compile Include="..\..\..\Source\tasks.c">
+      <SubType>compile</SubType>
+      <Link>Source\tasks.c</Link>
+    </Compile>
+    <Compile Include="..\..\..\Source\timers.c">
+      <SubType>compile</SubType>
+      <Link>Source\timers.c</Link>
+    </Compile>
+    <Compile Include="..\..\..\Source\portable\MemMang\heap_1.c">
+      <SubType>compile</SubType>
+      <Link>Source\portable\MemMang\heap_1.c</Link>
+    </Compile>
+    <Compile Include="..\..\..\Source\portable\GCC\AVR_Mega0\port.c">
+      <SubType>compile</SubType>
+      <Link>Source\portable\GCC\AVR_Mega0\port.c</Link>
+    </Compile>
+    <Compile Include="..\..\..\Source\portable\GCC\AVR_Mega0\portmacro.h">
+      <SubType>compile</SubType>
+      <Link>Source\portable\GCC\AVR_Mega0\portmacro.h</Link>
+    </Compile>
+    <Compile Include="..\..\..\Source\portable\GCC\AVR_Mega0\porthardware.h">
+      <SubType>compile</SubType>
+      <Link>Source\portable\GCC\AVR_Mega0\porthardware.h</Link>
+    </Compile>
+    <Compile Include="..\..\..\Source\include\atomic.h">
+      <SubType>compile</SubType>
+      <Link>Source\include\atomic.h</Link>
+    </Compile>
+    <Compile Include="..\..\..\Source\include\croutine.h">
+      <SubType>compile</SubType>
+      <Link>Source\include\croutine.h</Link>
+    </Compile>
+    <Compile Include="..\..\..\Source\include\deprecated_definitions.h">
+      <SubType>compile</SubType>
+      <Link>Source\include\deprecated_definitions.h</Link>
+    </Compile>
+    <Compile Include="..\..\..\Source\include\event_groups.h">
+      <SubType>compile</SubType>
+      <Link>Source\include\event_groups.h</Link>
+    </Compile>
+    <Compile Include="..\..\..\Source\include\list.h">
+      <SubType>compile</SubType>
+      <Link>Source\include\list.h</Link>
+    </Compile>
+    <Compile Include="..\..\..\Source\include\message_buffer.h">
+      <SubType>compile</SubType>
+      <Link>Source\include\message_buffer.h</Link>
+    </Compile>
+    <Compile Include="..\..\..\Source\include\mpu_prototypes.h">
+      <SubType>compile</SubType>
+      <Link>Source\include\mpu_prototypes.h</Link>
+    </Compile>
+    <Compile Include="..\..\..\Source\include\mpu_wrappers.h">
+      <SubType>compile</SubType>
+      <Link>Source\include\mpu_wrappers.h</Link>
+    </Compile>
+    <Compile Include="..\..\..\Source\include\portable.h">
+      <SubType>compile</SubType>
+      <Link>Source\include\portable.h</Link>
+    </Compile>
+    <Compile Include="..\..\..\Source\include\projdefs.h">
+      <SubType>compile</SubType>
+      <Link>Source\include\projdefs.h</Link>
+    </Compile>
+    <Compile Include="..\..\..\Source\include\queue.h">
+      <SubType>compile</SubType>
+      <Link>Source\include\queue.h</Link>
+    </Compile>
+    <Compile Include="..\..\..\Source\include\semphr.h">
+      <SubType>compile</SubType>
+      <Link>Source\include\semphr.h</Link>
+    </Compile>
+    <Compile Include="..\..\..\Source\include\stack_macros.h">
+      <SubType>compile</SubType>
+      <Link>Source\include\stack_macros.h</Link>
+    </Compile>
+    <Compile Include="..\..\..\Source\include\StackMacros.h">
+      <SubType>compile</SubType>
+      <Link>Source\include\StackMacros.h</Link>
+    </Compile>
+    <Compile Include="..\..\..\Source\include\stream_buffer.h">
+      <SubType>compile</SubType>
+      <Link>Source\include\stream_buffer.h</Link>
+    </Compile>
+    <Compile Include="..\..\..\Source\include\task.h">
+      <SubType>compile</SubType>
+      <Link>Source\include\task.h</Link>
+    </Compile>
+    <Compile Include="..\..\..\Source\include\timers.h">
+      <SubType>compile</SubType>
+      <Link>Source\include\timers.h</Link>
+    </Compile>
+    <Compile Include="main_blinky.c">
+      <SubType>compile</SubType>
+    </Compile>
+    <Compile Include="main_full.c">
+      <SubType>compile</SubType>
+    </Compile>
+    <Compile Include="main_minimal.c">
+      <SubType>compile</SubType>
+    </Compile>
+    <Compile Include="ParTest\ParTest.c">
+      <SubType>compile</SubType>
+    </Compile>
+    <Compile Include="regtest.c">
+      <SubType>compile</SubType>
+    </Compile>
+    <Compile Include="regtest.h">
+      <SubType>compile</SubType>
+    </Compile>
+    <Compile Include="serial\serial.c">
+      <SubType>compile</SubType>
+    </Compile>
+    <Compile Include="..\..\..\Demo\Common\include\comtest.h">
+      <SubType>compile</SubType>
+      <Link>Common\include\comtest.h</Link>
+    </Compile>
+    <Compile Include="..\..\..\Demo\Common\Minimal\comtest.c">
+      <SubType>compile</SubType>
+      <Link>Common\Minimal\comtest.c</Link>
+    </Compile>
+    <Compile Include="..\..\..\Demo\Common\include\integer.h">
+      <SubType>compile</SubType>
+      <Link>Common\include\integer.h</Link>
+    </Compile>
+    <Compile Include="..\..\..\Demo\Common\Minimal\integer.c">
+      <SubType>compile</SubType>
+      <Link>Common\Minimal\integer.c</Link>
+    </Compile>
+    <Compile Include="..\..\..\Demo\Common\include\PollQ.h">
+      <SubType>compile</SubType>
+      <Link>Common\include\PollQ.h</Link>
+    </Compile>
+    <Compile Include="..\..\..\Demo\Common\Minimal\PollQ.c">
+      <SubType>compile</SubType>
+      <Link>Common\Minimal\PollQ.c</Link>
+    </Compile>
+    <Compile Include="..\..\..\Demo\Common\include\crflash.h">
+      <SubType>compile</SubType>
+      <Link>Common\include\crflash.h</Link>
+    </Compile>
+    <Compile Include="..\..\..\Demo\Common\Minimal\crflash.c">
+      <SubType>compile</SubType>
+      <Link>Common\Minimal\crflash.c</Link>
+    </Compile>
+    <Compile Include="..\..\..\Demo\Common\include\recmutex.h">
+      <SubType>compile</SubType>
+      <Link>Common\include\recmutex.h</Link>
+    </Compile>
+    <Compile Include="..\..\..\Demo\Common\Minimal\recmutex.c">
+      <SubType>compile</SubType>
+      <Link>Common\Minimal\recmutex.c</Link>
+    </Compile>
+    <Compile Include="..\..\..\Demo\Common\include\TaskNotify.h">
+      <SubType>compile</SubType>
+      <Link>Common\include\TaskNotify.h</Link>
+    </Compile>
+    <Compile Include="..\..\..\Demo\Common\Minimal\TaskNotify.c">
+      <SubType>compile</SubType>
+      <Link>Common\Minimal\TaskNotify.c</Link>
+    </Compile>
+    <Compile Include="..\..\..\Demo\Common\include\semtest.h">
+      <SubType>compile</SubType>
+      <Link>Common\include\semtest.h</Link>
+    </Compile>
+    <Compile Include="..\..\..\Demo\Common\Full\semtest.c">
+      <SubType>compile</SubType>
+      <Link>Common\Full\semtest.c</Link>
+    </Compile>
+    <Compile Include="..\..\..\Demo\Common\include\print.h">
+      <SubType>compile</SubType>
+      <Link>Common\include\print.h</Link>
+    </Compile>
+    <Compile Include="..\..\..\Demo\Common\Full\print.c">
+      <SubType>compile</SubType>
+      <Link>Common\Full\print.c</Link>
+    </Compile>
+  </ItemGroup>
+  <ItemGroup>
+    <Folder Include="Source" />
+    <Folder Include="Source\include" />
+    <Folder Include="Source\portable" />
+    <Folder Include="Source\portable\GCC" />
+    <Folder Include="Source\portable\GCC\AVR_Mega0" />
+    <Folder Include="Source\portable\GCC\AVR_Mega0\" />
+    <Folder Include="Source\portable\MemMang" />
+    <Folder Include="ParTest\" />
+    <Folder Include="serial\" />
+    <Folder Include="Common\" />
+    <Folder Include="Common\include" />
+    <Folder Include="Common\Minimal" />
+    <Folder Include="Common\Full" />
+  </ItemGroup>
+  <Import Project="$(AVRSTUDIO_EXE_PATH)\\Vs\\Compiler.targets" />
+</Project>
--- a/FreeRTOS/Demo/AVR_ATMega4809_Atmel_Studio/RTOSDemo/clk_config.h
+++ b/FreeRTOS/Demo/AVR_ATMega4809_Atmel_Studio/RTOSDemo/clk_config.h
@ -0,0 +1,32 @@
+#ifndef CLK_CONFIG_H_
+#define CLK_CONFIG_H_
+
+#include <avr/io.h>
+#include "FreeRTOSConfig.h"
+
+#if (configCPU_CLOCK_HZ == 20000000)
+
+#define CLK_init()	_PROTECTED_WRITE(CLKCTRL.MCLKCTRLA, CLKCTRL_CLKSEL_OSC20M_gc);
+
+#elif (configCPU_CLOCK_HZ == 10000000)
+
+#define CLK_init()	_PROTECTED_WRITE(CLKCTRL.MCLKCTRLA, CLKCTRL_CLKSEL_OSC20M_gc); \
+                    _PROTECTED_WRITE(CLKCTRL.MCLKCTRLB, CLKCTRL_PDIV_2X_gc | CLKCTRL_PEN_bm);
+
+#elif (configCPU_CLOCK_HZ == 5000000)
+
+#define CLK_init()	_PROTECTED_WRITE(CLKCTRL.MCLKCTRLA, CLKCTRL_CLKSEL_OSC20M_gc); \
+                    _PROTECTED_WRITE(CLKCTRL.MCLKCTRLB, CLKCTRL_PDIV_4X_gc | CLKCTRL_PEN_bm);
+
+#elif (configCPU_CLOCK_HZ == 2000000)
+
+#define CLK_init()	_PROTECTED_WRITE(CLKCTRL.MCLKCTRLA, CLKCTRL_CLKSEL_OSC20M_gc); \
+                    _PROTECTED_WRITE(CLKCTRL.MCLKCTRLB, CLKCTRL_PDIV_10X_gc | CLKCTRL_PEN_bm);
+
+#else
+
+#error The selected clock frequency is not supported. Choose a value from the NOTE in FreeRTOSConfig.h.
+
+#endif
+
+#endif /* CLK_CONFIG_H_ */
--- a/FreeRTOS/Demo/AVR_ATMega4809_Atmel_Studio/RTOSDemo/main.c
+++ b/FreeRTOS/Demo/AVR_ATMega4809_Atmel_Studio/RTOSDemo/main.c
@ -0,0 +1,76 @@
+/*
+(C) 2020 Microchip Technology Inc. and its subsidiaries.
+
+Subject to your compliance with these terms, you may use Microchip software and
+any derivatives exclusively with Microchip products. It is your responsibility
+to comply with third party license terms applicable to your use of third party
+software (including open source software) that may accompany Microchip software.
+
+THIS SOFTWARE IS SUPPLIED BY MICROCHIP "AS IS".  NO WARRANTIES, WHETHER EXPRESS,
+IMPLIED OR STATUTORY, APPLY TO THIS SOFTWARE, INCLUDING ANY IMPLIED WARRANTIES
+OF NON-INFRINGEMENT, MERCHANTABILITY, AND FITNESS FOR A PARTICULAR PURPOSE.
+IN NO EVENT WILL MICROCHIP BE LIABLE FOR ANY INDIRECT, SPECIAL, PUNITIVE,
+INCIDENTAL OR CONSEQUENTIAL LOSS, DAMAGE, COST OR EXPENSE OF ANY KIND WHATSOEVER
+RELATED TO THE SOFTWARE, HOWEVER CAUSED, EVEN IF MICROCHIP HAS BEEN ADVISED OF
+THE POSSIBILITY OR THE DAMAGES ARE FORESEEABLE.  TO THE FULLEST EXTENT ALLOWED
+BY LAW, MICROCHIP'S TOTAL LIABILITY ON ALL CLAIMS IN ANY WAY RELATED TO THIS
+SOFTWARE WILL NOT EXCEED THE AMOUNT OF FEES, IF ANY, THAT YOU HAVE PAID DIRECTLY
+TO MICROCHIP FOR THIS SOFTWARE.
+*/
+
+#include <avr/io.h>
+#include "FreeRTOS.h"
+#include "clk_config.h"
+
+#define mainSELECTED_APPLICATION	0
+
+/*
+ * Configure the hardware as necessary to run this demo.
+ */
+static void prvSetupHardware( void );
+
+#if ( mainSELECTED_APPLICATION == 0 )
+extern void main_blinky( void );
+extern void init_blinky( void );
+#elif ( mainSELECTED_APPLICATION == 1 )
+extern void main_minimal( void );
+extern void init_minimal( void );
+#elif ( mainSELECTED_APPLICATION == 2 )
+extern void main_full( void );
+extern void init_full( void );
+#else
+#error Invalid mainSELECTED_APPLICATION setting. See the comments at the top of this file and above the mainSELECTED_APPLICATION definition.
+#endif
+
+int main( void )
+{
+	prvSetupHardware();
+	
+#if( mainSELECTED_APPLICATION == 0 )
+	main_blinky();
+#elif ( mainSELECTED_APPLICATION == 1 )
+	main_minimal();
+#elif ( mainSELECTED_APPLICATION == 2 )
+	main_full();
+#endif
+	
+	return 0;
+}
+
+static void prvSetupHardware( void )
+{
+	/* Ensure no interrupts execute while the scheduler is in an inconsistent
+	state.  Interrupts are automatically enabled when the scheduler is
+	started. */
+	portDISABLE_INTERRUPTS();
+	
+	CLK_init();
+	
+#if( mainSELECTED_APPLICATION == 0 )
+	init_blinky();
+#elif ( mainSELECTED_APPLICATION == 1 )
+	init_minimal();
+#elif ( mainSELECTED_APPLICATION == 2 )
+	init_full();
+#endif
+}
--- a/FreeRTOS/Demo/AVR_ATMega4809_Atmel_Studio/RTOSDemo/main_blinky.c
+++ b/FreeRTOS/Demo/AVR_ATMega4809_Atmel_Studio/RTOSDemo/main_blinky.c
@ -0,0 +1,178 @@
+/*
+ * FreeRTOS Kernel V10.3.1
+ * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+ * the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+ * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * http://www.FreeRTOS.org
+ * http://aws.amazon.com/freertos
+ *
+ * 1 tab == 4 spaces!
+ */
+
+/******************************************************************************
+ *
+ * main_blinky() creates one queue, and two tasks.  It then starts the
+ * scheduler.
+ *
+ * The Queue Send Task:
+ * The queue send task is implemented by the prvQueueSendTask() function in
+ * this file.  prvQueueSendTask() sits in a loop that causes it to repeatedly
+ * block for 200 milliseconds, before sending the value 100 to the queue that
+ * was created within main_blinky().  Once the value is sent, the task loops
+ * back around to block for another 200 milliseconds...and so on.
+ *
+ * The Queue Receive Task:
+ * The queue receive task is implemented by the prvQueueReceiveTask() function
+ * in this file.  prvQueueReceiveTask() sits in a loop where it repeatedly
+ * blocks on attempts to read data from the queue that was created within
+ * main_blinky().  When data is received, the task checks the value of the
+ * data, and if the value equals the expected 100, toggles an LED.  The 'block
+ * time' parameter passed to the queue receive function specifies that the
+ * task should be held in the Blocked state indefinitely to wait for data to
+ * be available on the queue.  The queue receive task will only leave the
+ * Blocked state when the queue send task writes to the queue.  As the queue
+ * send task writes to the queue every 200 milliseconds, the queue receive
+ * task leaves the Blocked state every 200 milliseconds, and therefore toggles
+ * the LED every 200 milliseconds.
+ */
+
+#include <avr/io.h>
+
+/* Scheduler include files. */
+#include "FreeRTOS.h"
+#include "task.h"
+#include "semphr.h"
+
+/* Priorities at which the tasks are created. */
+#define mainQUEUE_RECEIVE_TASK_PRIORITY		( tskIDLE_PRIORITY + 2 )
+#define	mainQUEUE_SEND_TASK_PRIORITY		( tskIDLE_PRIORITY + 1 )
+
+/* The rate at which data is sent to the queue.  The 200ms value is converted
+to ticks using the portTICK_PERIOD_MS constant. */
+#define mainQUEUE_SEND_FREQUENCY_MS			( 200 / portTICK_PERIOD_MS )
+
+/* The number of items the queue can hold.  This is 1 as the receive task
+will remove items as they are added, meaning the send task should always find
+the queue empty. */
+#define mainQUEUE_LENGTH					( 1 )
+
+/*-----------------------------------------------------------*/
+
+/*
+ * The tasks as described in the comments at the top of this file.
+ */
+static void prvQueueReceiveTask( void *pvParameters );
+static void prvQueueSendTask( void *pvParameters );
+
+/*-----------------------------------------------------------*/
+
+/* The queue used by both tasks. */
+static QueueHandle_t xQueue = NULL;
+
+void main_blinky( void )
+{
+	/* Create the queue. */
+ 	xQueue = xQueueCreate( mainQUEUE_LENGTH, sizeof( uint32_t ) );
+ 
+	if( xQueue != NULL )
+	{
+		/* Start the two tasks as described in the comments at the top of this
+		file. */
+		xTaskCreate( prvQueueReceiveTask,				/* The function that implements the task. */
+					"Rx", 								/* The text name assigned to the task - for debug only as it is not used by the kernel. */
+					configMINIMAL_STACK_SIZE, 			/* The size of the stack to allocate to the task. */
+					NULL, 								/* The parameter passed to the task - not used in this case. */
+					mainQUEUE_RECEIVE_TASK_PRIORITY, 	/* The priority assigned to the task. */
+					NULL );								/* The task handle is not required, so NULL is passed. */
+
+		xTaskCreate( prvQueueSendTask, "TX", configMINIMAL_STACK_SIZE, NULL, mainQUEUE_SEND_TASK_PRIORITY, NULL );
+
+		/* Start the tasks and timer running. */
+		vTaskStartScheduler();
+	}
+
+	/* If all is well, the scheduler will now be running, and the following
+	line will never be reached.  If the following line does execute, then
+	there was either insufficient FreeRTOS heap memory available for the idle
+	and/or timer tasks to be created, or vTaskStartScheduler() was called from
+	User mode.  See the memory management section on the FreeRTOS web site for
+	more details on the FreeRTOS heap http://www.freertos.org/a00111.html.  The
+	mode from which main() is called is set in the C start up code and must be
+	a privileged mode (not user mode). */
+	for( ;; );
+	
+}
+
+void init_blinky( void )
+{
+	/* Set PF5 as output. */
+	PORTF.DIRSET = PIN5_bm;
+}
+
+static void prvQueueSendTask( void *pvParameters )
+{
+TickType_t xNextWakeTime;
+const unsigned long ulValueToSend = 100UL;
+
+	/* Remove compiler warning about unused parameter. */
+	( void ) pvParameters;
+
+	/* Initialise xNextWakeTime - this only needs to be done once. */
+	xNextWakeTime = xTaskGetTickCount();
+
+	for( ;; )
+	{
+		/* Place this task in the blocked state until it is time to run again. */
+		vTaskDelayUntil( &xNextWakeTime, mainQUEUE_SEND_FREQUENCY_MS );
+
+		/* Send to the queue - causing the queue receive task to unblock and
+		toggle the LED.  0 is used as the block time so the sending operation
+		will not block - it shouldn't need to block as the queue should always
+		be empty at this point in the code. */
+		xQueueSend( xQueue, &ulValueToSend, 0U );
+	}
+}
+/*-----------------------------------------------------------*/
+
+static void prvQueueReceiveTask( void *pvParameters )
+{
+unsigned long ulReceivedValue;
+const unsigned long ulExpectedValue = 100UL;
+
+	/* Remove compiler warning about unused parameter. */
+	( void ) pvParameters;
+
+	for( ;; )
+	{
+		/* Wait until something arrives in the queue - this task will block
+		indefinitely provided INCLUDE_vTaskSuspend is set to 1 in
+		FreeRTOSConfig.h. */
+		xQueueReceive( xQueue, &ulReceivedValue, portMAX_DELAY );
+
+		/*  To get here something must have been received from the queue, but
+		is it the expected value?  If it is, toggle the LED. */
+		if( ulReceivedValue == ulExpectedValue )
+		{
+			/* Toggle LED on pin PF5. */
+			PORTF.OUTTGL |= PIN5_bm;
+			ulReceivedValue = 0U;
+		}
+	}
+}
+
--- a/FreeRTOS/Demo/AVR_ATMega4809_Atmel_Studio/RTOSDemo/main_full.c
+++ b/FreeRTOS/Demo/AVR_ATMega4809_Atmel_Studio/RTOSDemo/main_full.c
@ -0,0 +1,111 @@
+#include "FreeRTOS.h"
+#include "task.h"
+#include "partest.h"
+
+#include "semtest.h"
+#include "TaskNotify.h"
+#include "regtest.h"
+#include "recmutex.h"
+
+#define mainSEM_TEST_PRIORITY				( tskIDLE_PRIORITY + 1UL )
+#define mainCHECK_TASK_PRIORITY				( configMAX_PRIORITIES - 1 )
+
+/* The period between executions of the check task. */
+#define mainCHECK_PERIOD				( ( TickType_t ) 3000 / portTICK_PERIOD_MS  )
+
+/* LED that is toggled by the check task.  The check task periodically checks
+that all the other tasks are operating without error.  If no errors are found
+the LED is toggled.  If an error is found at any time the LED is never toggles
+again. */
+#define mainCHECK_TASK_LED				( 5 )
+
+/*
+ * The check task, as described at the top of this file.
+ */
+static void prvCheckTask( void *pvParameters );
+
+void main_full( void )
+{
+	
+ 	vStartSemaphoreTasks(mainSEM_TEST_PRIORITY);
+ 	vStartTaskNotifyTask();
+ 	vStartRegTestTasks();
+	vStartRecursiveMutexTasks();
+	
+	
+	/* Create the task that performs the 'check' functionality,	as described at
+	the top of this file. */
+	xTaskCreate( prvCheckTask, "Check", configMINIMAL_STACK_SIZE, NULL, mainCHECK_TASK_PRIORITY, NULL );
+
+	vTaskStartScheduler();	
+	
+	/* If all is well, the scheduler will now be running, and the following
+	line will never be reached.  If the following line does execute, then
+	there was either insufficient FreeRTOS heap memory available for the idle
+	and/or timer tasks to be created, or vTaskStartScheduler() was called from
+	User mode.  See the memory management section on the FreeRTOS web site for
+	more details on the FreeRTOS heap http://www.freertos.org/a00111.html.  The
+	mode from which main() is called is set in the C start up code and must be
+	a privileged mode (not user mode). */
+	for( ;; );
+}
+
+void init_full( void )
+{
+	vParTestInitialise();
+}
+
+static void prvCheckTask( void *pvParameters )
+{
+TickType_t xLastExecutionTime;
+unsigned long ulErrorFound = pdFALSE;
+
+	/* Just to stop compiler warnings. */
+	( void ) pvParameters;
+
+	/* Initialise xLastExecutionTime so the first call to vTaskDelayUntil()
+	works correctly. */
+	xLastExecutionTime = xTaskGetTickCount();
+
+	/* Cycle for ever, delaying then checking all the other tasks are still
+	operating without error.  The onboard LED is toggled on each iteration 
+	unless an error occurred. */
+	for( ;; )
+	{
+		/* Delay until it is time to execute again. */
+		vTaskDelayUntil( &xLastExecutionTime, mainCHECK_PERIOD );
+
+		/* Check all the demo tasks (other than the flash tasks) to ensure
+		that they are all still running, and that none have detected an error. */
+		if( xAreSemaphoreTasksStillRunning() != pdTRUE )
+		{
+			ulErrorFound |= 1UL << 0UL;
+		}
+				
+		if( xAreTaskNotificationTasksStillRunning() != pdTRUE )
+		{
+			ulErrorFound |= 1UL << 1UL;
+		}
+		
+		if( xAreRegTestTasksStillRunning() != pdTRUE )
+		{
+			ulErrorFound |= 1UL << 2UL;
+		}
+		
+		if ( xAreRecursiveMutexTasksStillRunning() != pdTRUE )
+		{
+			ulErrorFound |= 1UL << 3UL;
+		}
+		
+		if( ulErrorFound == pdFALSE )
+		{
+			/* Toggle the LED if everything is okay so we know if an error occurs even if not
+			using console IO. */
+			vParTestToggleLED( mainCHECK_TASK_LED );
+		}
+	}
+}
+
+void vApplicationTickHook( void ) {
+	xNotifyTaskFromISR();
+}
--- a/FreeRTOS/Demo/AVR_ATMega4809_Atmel_Studio/RTOSDemo/main_minimal.c
+++ b/FreeRTOS/Demo/AVR_ATMega4809_Atmel_Studio/RTOSDemo/main_minimal.c
@ -0,0 +1,160 @@
+#include <avr/eeprom.h>
+
+#include "FreeRTOS.h"
+#include "task.h"
+#include "croutine.h"
+
+#include "PollQ.h"
+#include "integer.h"
+#include "serial.h"
+#include "comtest.h"
+#include "crflash.h"
+#include "partest.h"
+#include "regtest.h"
+
+/* Priority definitions for most of the tasks in the demo application.  Some
+tasks just use the idle priority. */
+#define mainCOM_TEST_PRIORITY			( tskIDLE_PRIORITY + 2 )
+#define mainQUEUE_POLL_PRIORITY			( tskIDLE_PRIORITY + 2 )
+#define mainCHECK_TASK_PRIORITY			( tskIDLE_PRIORITY + 3 )
+
+/* Baud rate used by the serial port tasks. */
+#define mainCOM_TEST_BAUD_RATE			( ( unsigned long ) 9600 )
+
+/* LED used by the serial port tasks.  This is toggled on each character Tx,
+and mainCOM_TEST_LED + 1 is toggles on each character Rx. */
+#define mainCOM_TEST_LED				( 6 )
+
+/* LED that is toggled by the check task.  The check task periodically checks
+that all the other tasks are operating without error.  If no errors are found
+the LED is toggled.  If an error is found at any time the LED is never toggles
+again. */
+#define mainCHECK_TASK_LED				( 5 )
+
+/* The period between executions of the check task. */
+#define mainCHECK_PERIOD				( ( TickType_t ) 1000 / portTICK_PERIOD_MS  )
+
+/* An address in the EEPROM used to count resets.  This is used to check that
+the demo application is not unexpectedly resetting. */
+#define mainRESET_COUNT_ADDRESS			( 0x1400 )
+
+/* The number of coroutines to create. */
+#define mainNUM_FLASH_COROUTINES        ( 3 )
+
+/*
+ * The task function for the "Check" task.
+ */
+static void vErrorChecks( void *pvParameters );
+
+/*
+ * Checks the unique counts of other tasks to ensure they are still operational.
+ * Flashes an LED if everything is okay.
+ */
+static void prvCheckOtherTasksAreStillRunning( void );
+
+/*
+ * Called on boot to increment a count stored in the EEPROM.  This is used to
+ * ensure the CPU does not reset unexpectedly.
+ */
+static void prvIncrementResetCount( void );
+
+void main_minimal( void )
+{
+	prvIncrementResetCount();
+
+	/* Create the standard demo tasks. */
+	vStartIntegerMathTasks( tskIDLE_PRIORITY );
+	vAltStartComTestTasks( mainCOM_TEST_PRIORITY, mainCOM_TEST_BAUD_RATE, mainCOM_TEST_LED );
+	vStartPolledQueueTasks( mainQUEUE_POLL_PRIORITY );
+	vStartRegTestTasks();
+	
+	/* Create the tasks defined within this file. */
+	xTaskCreate( vErrorChecks, "Check", configMINIMAL_STACK_SIZE, NULL, mainCHECK_TASK_PRIORITY, NULL );
+
+	/* Create the co-routines that flash the LED's. */
+	vStartFlashCoRoutines( mainNUM_FLASH_COROUTINES );
+	
+	/* In this port, to use preemptive scheduler define configUSE_PREEMPTION
+	as 1 in portmacro.h.  To use the cooperative scheduler define
+	configUSE_PREEMPTION as 0. */
+	vTaskStartScheduler();	
+}
+
+void init_minimal( void )
+{
+	PORTB.DIR &= ~PIN1_bm;
+	PORTB.DIR |= PIN0_bm;
+	
+	vParTestInitialise();
+}
+
+static void vErrorChecks( void *pvParameters )
+{
+static volatile unsigned long ulDummyVariable = 3UL;
+
+	/* The parameters are not used. */
+	( void ) pvParameters;
+
+	/* Cycle for ever, delaying then checking all the other tasks are still
+	operating without error. */
+	for( ;; )
+	{
+		vTaskDelay( mainCHECK_PERIOD );
+
+		/* Perform a bit of 32bit maths to ensure the registers used by the
+		integer tasks get some exercise. The result here is not important -
+		see the demo application documentation for more info. */
+		ulDummyVariable *= 3;
+		
+		prvCheckOtherTasksAreStillRunning();
+	}
+}
+/*-----------------------------------------------------------*/
+
+static void prvCheckOtherTasksAreStillRunning( void )
+{
+static portBASE_TYPE xErrorHasOccurred = pdFALSE;
+
+	if( xAreIntegerMathsTaskStillRunning() != pdTRUE )
+	{
+		xErrorHasOccurred = pdTRUE;
+	}
+
+	if( xAreComTestTasksStillRunning() != pdTRUE )
+	{
+		xErrorHasOccurred = pdTRUE;
+	}
+
+	if( xArePollingQueuesStillRunning() != pdTRUE )
+	{
+		xErrorHasOccurred = pdTRUE;
+	}
+
+	if( xAreRegTestTasksStillRunning() != pdTRUE )
+	{
+		xErrorHasOccurred = pdTRUE;
+	}
+	
+	if( xErrorHasOccurred == pdFALSE )
+	{
+		/* Toggle the LED if everything is okay so we know if an error occurs even if not
+		using console IO. */
+		vParTestToggleLED( mainCHECK_TASK_LED );
+	}
+}
+/*-----------------------------------------------------------*/
+
+static void prvIncrementResetCount( void )
+{
+unsigned char ucCount;
+
+	eeprom_read_block( &ucCount, ( void * ) mainRESET_COUNT_ADDRESS, sizeof( ucCount ) );
+	ucCount++;
+	eeprom_write_byte( ( void * ) mainRESET_COUNT_ADDRESS, ucCount );
+}
+/*-----------------------------------------------------------*/
+
+void vApplicationIdleHook( void )
+{
+	vCoRoutineSchedule();
+}
--- a/FreeRTOS/Demo/AVR_ATMega4809_Atmel_Studio/RTOSDemo/regtest.c
+++ b/FreeRTOS/Demo/AVR_ATMega4809_Atmel_Studio/RTOSDemo/regtest.c
@ -0,0 +1,384 @@
+/*
+ * FreeRTOS Kernel V10.3.0
+ * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+ * the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+ * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * http://www.FreeRTOS.org
+ * http://aws.amazon.com/freertos
+ *
+ * 1 tab == 4 spaces!
+ */
+
+/* Scheduler include files. */
+#include "FreeRTOS.h"
+#include "task.h"
+
+/* Demo file headers. */
+#include "regtest.h"
+
+/*
+ * Test tasks that sets registers to known values, then checks to ensure the
+ * values remain as expected.  Test 1 and test 2 use different values.
+ */
+static void prvRegisterCheck1( void *pvParameters );
+static void prvRegisterCheck2( void *pvParameters );
+
+/* Set to a non zero value should an error be found. */
+portBASE_TYPE xRegTestError = pdFALSE;
+
+/*-----------------------------------------------------------*/
+
+void vStartRegTestTasks( void )
+{
+	xTaskCreate( prvRegisterCheck1, "Reg1", configMINIMAL_STACK_SIZE, NULL, tskIDLE_PRIORITY, NULL );
+	xTaskCreate( prvRegisterCheck2, "Reg2", configMINIMAL_STACK_SIZE, NULL, tskIDLE_PRIORITY, NULL );		
+}
+/*-----------------------------------------------------------*/
+
+portBASE_TYPE xAreRegTestTasksStillRunning( void )
+{
+portBASE_TYPE xReturn;
+
+	/* If a register was found to contain an unexpected value then the
+	xRegTestError variable would have been set to a non zero value. */
+	if( xRegTestError == pdFALSE )
+	{
+		xReturn = pdTRUE;
+	}
+	else
+	{
+		xReturn = pdFALSE;
+	}
+	
+	return xReturn;
+}
+/*-----------------------------------------------------------*/
+
+static void prvRegisterCheck1( void *pvParameters )
+{
+	( void ) pvParameters;
+
+	for( ;; )
+	{
+		asm(	"LDI	r31,	5"		);		
+		asm( 	"MOV	r0,		r31"	);
+		asm(	"LDI	r31,	6"		);
+		asm( 	"MOV	r1,		r31"	);
+		asm(	"LDI	r31,	7"		);
+		asm( 	"MOV	r2,		r31"	);
+		asm(	"LDI	r31,	8"		);
+		asm( 	"MOV	r3,		r31"	);
+		asm(	"LDI	r31,	9"		);
+		asm( 	"MOV	r4,		r31"	);
+		asm(	"LDI	r31,	10"		);
+		asm( 	"MOV	r5,		r31"	);
+		asm(	"LDI	r31,	11"		);
+		asm( 	"MOV	r6,		r31"	);
+		asm(	"LDI	r31,	12"		);
+		asm( 	"MOV	r7,		r31"	);
+		asm(	"LDI	r31,	13"		);
+		asm( 	"MOV	r8,		r31"	);
+		asm(	"LDI	r31,	14"		);
+		asm( 	"MOV	r9,		r31"	);
+		asm(	"LDI	r31,	15"		);
+		asm( 	"MOV	r10,	r31"	);
+		asm(	"LDI	r31,	16"		);
+		asm( 	"MOV	r11,	r31"	);
+		asm(	"LDI	r31,	17"		);
+		asm( 	"MOV	r12,	r31"	);
+		asm(	"LDI	r31,	18"		);
+		asm( 	"MOV	r13,	r31"	);
+		asm(	"LDI	r31,	19"		);
+		asm( 	"MOV	r14,	r31"	);
+		asm(	"LDI	r31,	20"		);
+		asm( 	"MOV	r15,	r31"	);
+		asm(	"LDI	r16,	21"		);
+		asm(	"LDI	r17,	22"		);
+		asm(	"LDI	r18,	23"		);
+		asm(	"LDI	r19,	24"		);
+		asm(	"LDI	r20,	25"		);
+		asm(	"LDI	r21,	26"		);
+		asm(	"LDI	r22,	27"		);
+		asm(	"LDI	r23,	28"		);
+		asm(	"LDI	r24,	29"		);
+		asm(	"LDI	r25,	30"		);
+		asm(	"LDI	r26,	31"		);
+		asm(	"LDI	r27,	32"		);
+		asm(	"LDI	r28,	33"		);
+		asm(	"LDI	r29,	34"		);
+		asm(	"LDI	r30,	35"		);
+
+		taskYIELD();
+
+		asm(	"CPI	r31,	20"			);
+		asm(	"BREQ	no_err_1"			);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"no_err_1:"					);
+		asm(	"LDI	r31,	5"			);
+		asm(	"CPSE	r31,	r0"			);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	6"			);
+		asm(	"CPSE	r31,	r1"			);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	7"			);
+		asm(	"CPSE	r31,	r2"			);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	8"			);
+		asm(	"CPSE	r31,	r3"			);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	9"			);
+		asm(	"CPSE	r31,	r4"			);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	10"			);
+		asm(	"CPSE	r31,	r5"			);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	11"			);
+		asm(	"CPSE	r31,	r6"			);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	12"			);
+		asm(	"CPSE	r31,	r7"			);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	13"			);
+		asm(	"CPSE	r31,	r8"			);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	14"			);
+		asm(	"CPSE	r31,	r9"			);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	15"			);
+		asm(	"CPSE	r31,	r10"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	16"			);
+		asm(	"CPSE	r31,	r11"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	17"			);
+		asm(	"CPSE	r31,	r12"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	18"			);
+		asm(	"CPSE	r31,	r13"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	19"			);
+		asm(	"CPSE	r31,	r14"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	20"			);
+		asm(	"CPSE	r31,	r15"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	21"			);
+		asm(	"CPSE	r31,	r16"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	22"			);
+		asm(	"CPSE	r31,	r17"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	23"			);
+		asm(	"CPSE	r31,	r18"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	24"			);
+		asm(	"CPSE	r31,	r19"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	25"			);
+		asm(	"CPSE	r31,	r20"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	26"			);
+		asm(	"CPSE	r31,	r21"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	27"			);
+		asm(	"CPSE	r31,	r22"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	28"			);
+		asm(	"CPSE	r31,	r23"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	29"			);
+		asm(	"CPSE	r31,	r24"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	30"			);
+		asm(	"CPSE	r31,	r25"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	31"			);
+		asm(	"CPSE	r31,	r26"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	32"			);
+		asm(	"CPSE	r31,	r27"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	33"			);
+		asm(	"CPSE	r31,	r28"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	34"			);
+		asm(	"CPSE	r31,	r29"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	35"			);
+		asm(	"CPSE	r31,	r30"		);
+		asm(	"STS	xRegTestError, r0"	);
+	}
+}
+/*-----------------------------------------------------------*/
+
+static void prvRegisterCheck2( void *pvParameters )
+{
+	( void ) pvParameters;
+
+	for( ;; )
+	{
+		asm(	"LDI	r31,	1"		);		
+		asm( 	"MOV	r0,		r31"	);
+		asm(	"LDI	r31,	2"		);
+		asm( 	"MOV	r1,		r31"	);
+		asm(	"LDI	r31,	3"		);
+		asm( 	"MOV	r2,		r31"	);
+		asm(	"LDI	r31,	4"		);
+		asm( 	"MOV	r3,		r31"	);
+		asm(	"LDI	r31,	5"		);
+		asm( 	"MOV	r4,		r31"	);
+		asm(	"LDI	r31,	6"		);
+		asm( 	"MOV	r5,		r31"	);
+		asm(	"LDI	r31,	7"		);
+		asm( 	"MOV	r6,		r31"	);
+		asm(	"LDI	r31,	8"		);
+		asm( 	"MOV	r7,		r31"	);
+		asm(	"LDI	r31,	9"		);
+		asm( 	"MOV	r8,		r31"	);
+		asm(	"LDI	r31,	10"		);
+		asm( 	"MOV	r9,		r31"	);
+		asm(	"LDI	r31,	11"		);
+		asm( 	"MOV	r10,	r31"	);
+		asm(	"LDI	r31,	12"		);
+		asm( 	"MOV	r11,	r31"	);
+		asm(	"LDI	r31,	13"		);
+		asm( 	"MOV	r12,	r31"	);
+		asm(	"LDI	r31,	14"		);
+		asm( 	"MOV	r13,	r31"	);
+		asm(	"LDI	r31,	15"		);
+		asm( 	"MOV	r14,	r31"	);
+		asm(	"LDI	r31,	16"		);
+		asm( 	"MOV	r15,	r31"	);
+		asm(	"LDI	r16,	17"		);
+		asm(	"LDI	r17,	18"		);
+		asm(	"LDI	r18,	19"		);
+		asm(	"LDI	r19,	20"		);
+		asm(	"LDI	r20,	21"		);
+		asm(	"LDI	r21,	22"		);
+		asm(	"LDI	r22,	23"		);
+		asm(	"LDI	r23,	24"		);
+		asm(	"LDI	r24,	25"		);
+		asm(	"LDI	r25,	26"		);
+		asm(	"LDI	r26,	27"		);
+		asm(	"LDI	r27,	28"		);
+		asm(	"LDI	r28,	29"		);
+		asm(	"LDI	r29,	30"		);
+		asm(	"LDI	r30,	31"		);
+
+		taskYIELD();
+
+		asm(	"CPI	r31,	16"			);
+		asm(	"BREQ	no_err_2"			);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"no_err_2:"					);
+		asm(	"LDI	r31,	1"			);
+		asm(	"CPSE	r31,	r0"			);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	2"			);
+		asm(	"CPSE	r31,	r1"			);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	3"			);
+		asm(	"CPSE	r31,	r2"			);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	4"			);
+		asm(	"CPSE	r31,	r3"			);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	5"			);
+		asm(	"CPSE	r31,	r4"			);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	6"			);
+		asm(	"CPSE	r31,	r5"			);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	7"			);
+		asm(	"CPSE	r31,	r6"			);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	8"			);
+		asm(	"CPSE	r31,	r7"			);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	9"			);
+		asm(	"CPSE	r31,	r8"			);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	10"			);
+		asm(	"CPSE	r31,	r9"			);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	11"			);
+		asm(	"CPSE	r31,	r10"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	12"			);
+		asm(	"CPSE	r31,	r11"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	13"			);
+		asm(	"CPSE	r31,	r12"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	14"			);
+		asm(	"CPSE	r31,	r13"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	15"			);
+		asm(	"CPSE	r31,	r14"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	16"			);
+		asm(	"CPSE	r31,	r15"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	17"			);
+		asm(	"CPSE	r31,	r16"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	18"			);
+		asm(	"CPSE	r31,	r17"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	19"			);
+		asm(	"CPSE	r31,	r18"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	20"			);
+		asm(	"CPSE	r31,	r19"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	21"			);
+		asm(	"CPSE	r31,	r20"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	22"			);
+		asm(	"CPSE	r31,	r21"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	23"			);
+		asm(	"CPSE	r31,	r22"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	24"			);
+		asm(	"CPSE	r31,	r23"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	25"			);
+		asm(	"CPSE	r31,	r24"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	26"			);
+		asm(	"CPSE	r31,	r25"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	27"			);
+		asm(	"CPSE	r31,	r26"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	28"			);
+		asm(	"CPSE	r31,	r27"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	29"			);
+		asm(	"CPSE	r31,	r28"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	30"			);
+		asm(	"CPSE	r31,	r29"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	31"			);
+		asm(	"CPSE	r31,	r30"		);
+		asm(	"STS	xRegTestError, r0"	);
+	}
+}
--- a/FreeRTOS/Demo/AVR_ATMega4809_Atmel_Studio/RTOSDemo/regtest.h
+++ b/FreeRTOS/Demo/AVR_ATMega4809_Atmel_Studio/RTOSDemo/regtest.h
@ -0,0 +1,34 @@
+/*
+ * FreeRTOS Kernel V10.3.0
+ * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+ * the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+ * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * http://www.FreeRTOS.org
+ * http://aws.amazon.com/freertos
+ *
+ * 1 tab == 4 spaces!
+ */
+
+#ifndef REG_TEST_H
+#define REG_TEST_H
+
+void vStartRegTestTasks( void );
+portBASE_TYPE xAreRegTestTasksStillRunning( void );
+
+#endif
--- a/FreeRTOS/Demo/AVR_ATMega4809_Atmel_Studio/RTOSDemo/serial/serial.c
+++ b/FreeRTOS/Demo/AVR_ATMega4809_Atmel_Studio/RTOSDemo/serial/serial.c
@ -0,0 +1,165 @@
+/*
+ * FreeRTOS Kernel V10.3.1
+ * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+ * the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+ * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * http://www.FreeRTOS.org
+ * http://aws.amazon.com/freertos
+ *
+ * 1 tab == 4 spaces!
+ */
+
+
+/* BASIC INTERRUPT DRIVEN SERIAL PORT DRIVER FOR IAR AVR PORT. */
+
+#include <stdlib.h>
+#include "FreeRTOS.h"
+#include "queue.h"
+#include "task.h"
+#include "serial.h"
+#include <avr/interrupt.h>
+
+#define USART_BAUD_RATE(BAUD_RATE) ((float)(configCPU_CLOCK_HZ * 64 / (16 * (float)BAUD_RATE)) + 0.5)
+ 
+static QueueHandle_t xRxedChars;
+static QueueHandle_t xCharsForTx;
+
+#define vInterruptOn() USART3.CTRLA |= (1 << USART_DREIE_bp)										
+
+#define vInterruptOff()	USART3.CTRLA &= ~(1 << USART_DREIE_bp)
+
+xComPortHandle xSerialPortInitMinimal( unsigned long ulWantedBaud, unsigned portBASE_TYPE uxQueueLength )
+{
+	portENTER_CRITICAL();
+	{
+		/* Create the queues used by the com test task. */
+		xRxedChars = xQueueCreate( uxQueueLength, ( unsigned portBASE_TYPE ) sizeof( signed char ) );
+		xCharsForTx = xQueueCreate( uxQueueLength, ( unsigned portBASE_TYPE ) sizeof( signed char ) );
+
+
+		USART3.BAUD = (uint16_t)USART_BAUD_RATE(ulWantedBaud); /* set baud rate register */
+
+		USART3.CTRLA = 0 << USART_ABEIE_bp    /* Auto-baud Error Interrupt Enable: disabled */
+						| 0 << USART_DREIE_bp  /* Data Register Empty Interrupt Enable: disabled */
+						| 1 << USART_LBME_bp   /* Loop-back Mode Enable: enabled */
+						| USART_RS485_OFF_gc   /* RS485 Mode disabled */
+						| 1 << USART_RXCIE_bp  /* Receive Complete Interrupt Enable: enabled */
+						| 0 << USART_RXSIE_bp  /* Receiver Start Frame Interrupt Enable: disabled */
+						| 0 << USART_TXCIE_bp; /* Transmit Complete Interrupt Enable: disabled */
+
+		USART3.CTRLB = 0 << USART_MPCM_bp       /* Multi-processor Communication Mode: disabled */
+						| 0 << USART_ODME_bp     /* Open Drain Mode Enable: disabled */
+						| 1 << USART_RXEN_bp     /* Reciever enable: enabled */
+						| USART_RXMODE_NORMAL_gc /* Normal mode */
+						| 0 << USART_SFDEN_bp    /* Start Frame Detection Enable */
+						| 1 << USART_TXEN_bp;    /* Transmitter Enable: enabled */
+		
+	}
+	
+	portEXIT_CRITICAL();
+	
+	/* Unlike other ports, this serial code does not allow for more than one
+	com port.  We therefore don't return a pointer to a port structure and can
+	instead just return NULL. */
+	return NULL;
+}
+/*-----------------------------------------------------------*/
+
+signed portBASE_TYPE xSerialGetChar( xComPortHandle pxPort, signed char *pcRxedChar, TickType_t xBlockTime )
+{
+	/* Get the next character from the buffer.  Return false if no characters
+	are available, or arrive before xBlockTime expires. */
+	if( xQueueReceive( xRxedChars, pcRxedChar, xBlockTime ) )
+	{
+		return pdTRUE;
+	}
+	else
+	{
+		return pdFALSE;
+	}
+}
+/*-----------------------------------------------------------*/
+
+signed portBASE_TYPE xSerialPutChar( xComPortHandle pxPort, signed char cOutChar, TickType_t xBlockTime )
+{
+	/* Return false if after the block time there is no room on the Tx queue. */
+	if( xQueueSend( xCharsForTx, &cOutChar, xBlockTime ) != pdPASS )
+	{
+		return pdFAIL;
+	}
+	
+	vInterruptOn();
+	
+	return pdPASS;
+}
+/*-----------------------------------------------------------*/
+
+void vSerialClose( xComPortHandle xPort )
+{
+unsigned char ucByte;
+
+	/* Turn off the interrupts.  We may also want to delete the queues and/or
+	re-install the original ISR. */
+
+	portENTER_CRITICAL();
+	{
+		vInterruptOff();
+		
+		ucByte = USART3.CTRLB ;									
+		ucByte &= (0xFF ^(1 << USART_RXEN_bp));					
+		USART3.CTRLB = ucByte ;	
+		
+	}
+	portEXIT_CRITICAL();
+}
+/*-----------------------------------------------------------*/
+
+ISR(USART3_RXC_vect)
+{
+signed char ucChar, xHigherPriorityTaskWoken = pdFALSE;
+
+	/* Get the character and post it on the queue of Rxed characters.
+	If the post causes a task to wake force a context switch as the woken task
+	may have a higher priority than the task we have interrupted. */
+	ucChar = USART3.RXDATAL;
+
+	xQueueSendFromISR( xRxedChars, &ucChar, &xHigherPriorityTaskWoken );
+
+	if( xHigherPriorityTaskWoken != pdFALSE )
+	{
+		portYIELD_FROM_ISR();
+	}
+		
+}
+
+ISR(USART3_DRE_vect)
+{
+signed char cChar, cTaskWoken = pdFALSE;
+
+	if( xQueueReceiveFromISR( xCharsForTx, &cChar, &cTaskWoken ) == pdTRUE )
+	{
+		/* Send the next character queued for Tx. */
+		USART3.TXDATAL = cChar;
+	}
+	else
+	{
+		/* Queue empty, nothing to send. */
+		vInterruptOff();
+	}
+}
--- a/FreeRTOS/Demo/AVR_ATMega4809_Atmel_Studio/readme.md
+++ b/FreeRTOS/Demo/AVR_ATMega4809_Atmel_Studio/readme.md
@ -0,0 +1,65 @@
+
+
+# Overview
+
+This directory contains a Atmel Studio demo project (GCC compiler) for Atmega4809 Curiosity Nano board equipped with Atmega4809 microcontroller (48 KB Flash, 6 KB SRAM, 256 bytes EEPROM).  
+
+The project comes as three different demos, selectable by a define in the main.c file. Each demo has its own main-***demo_name***.c file. Follow the instructions on the RTOS port documentation page for details about how to setup the target hardware, download and execute the demo application.
+
+### Blinky Demo
+
+**#define       mainSELECTED_APPLICATION	  0**
+
+Blinky demos are intended for beginners. They normally create just two [tasks](https://www.freertos.org/a00015.html) that communicates with each other through a [queue](https://www.freertos.org/Embedded-RTOS-Queues.html). Their functionality is contained in a single C source file called **main_blinky.c**.
+
+One of the tasks repeatedly sends a predefined value to the queue with 200 ms intervals, while the other task waits for messages to be available in the queue. Once a new message is available, it toggles on board LED if the value matches the expected value.
+
+
+### Minimal Demo
+
+**#define       mainSELECTED_APPLICATION	  1**
+
+This demo includes a higher number of tasks than the **Blinky demo**, but the complexity is still fairly low. Whole functionality is included in the **main_minimal.c** file by using the following tasks:
+
+ - integer math task (**Integer.c**)
+ - register tasks to verify the context switch (**regtest.c**)
+ - polled queue tasks (**PollQ.c**)
+ - serial communiation tasks (**Serial.c**)
+ - check task that periodically checks the other tasks are operating without error.
+
+This demo uses the **check** task to periodically inspect the standard demo tasks in order to ensure all the tasks are functioning as expected. The check task also toggles an LED to give a visual feedback of the system status. If the LED is toggling roughly every second, then the check task has not discovered any problems. If the LED stops toggling, then the check task has discovered a problem in one or more tasks.
+
+If to see the console output from serial communication tasks, serial port could be configured as: 
+ - baud rate 9600
+ - data 8-bit
+ - parity none
+ - stop bits 1-bit
+ - flow control none
+
+### Full Demo
+
+**#define       mainSELECTED_APPLICATION	  2**
+
+This demo is a comprehensive demonstration and test of a lot of FreeRTOS features, including direct task to task notifications, queues, semaphores, recursive semaphores, software timers, and more. The following tasks are created in **main_full.c** file:
+
+ - register tasks to verify the context switch (**Regtest.c**)
+ - semaphores task (**Semtest.c**)
+ - direct task to task notification task (**TaskNotify.c**)
+ - recursive semaphores task (**Regmutex.c**)
+ - check task that periodically checks the other tasks are operating without error
+
+The demo uses the **check** task to periodically inspect the standard demo tasks in order to ensure all the tasks are functioning as expected. The check task also toggles an LED to give a visual feedback of the system status. If the LED is toggling every 3 seconds, then the check task has not discovered any problems. If the LED stops toggling, then the check task has discovered a problem in one or more tasks.
+
+# Quick start
+
+To run this demo on AVR128DA48 Curiosity Nano platform, the following steps are required:
+ - install **Atmel Studio IDE**
+ - open **RTOSDemo.atsln** project file from current folder
+ - select desired demo using **#define       mainSELECTED_APPLICATION** as explained in the previous section
+ - build and debug the project
+
+
+# References
+  - [Atmega4809 Curiosity Nano platform](https://www.microchip.com/DevelopmentTools/ProductDetails/PartNO/DM320115)
+  - [Atmel Studio IDE](http://studio.download.atmel.com/7.0.2389/as-installer-7.0.2389-web.exe)
+  - [Atmega4809](https://www.microchip.com/wwwproducts/en/ATMEGA4809), [Atmega4808](https://www.microchip.com/wwwproducts/en/ATMEGA4808), [Atmega3208](https://www.microchip.com/wwwproducts/en/ATMEGA3208) and [Atmega3209](https://www.microchip.com/wwwproducts/en/ATMEGA3209) devices page
--- a/FreeRTOS/Demo/AVR_Dx_Atmel_Studio/RTOSDemo.atsln
+++ b/FreeRTOS/Demo/AVR_Dx_Atmel_Studio/RTOSDemo.atsln
@ -0,0 +1,22 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Atmel Studio Solution File, Format Version 11.00
+VisualStudioVersion = 14.0.23107.0
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{54F91283-7BC4-4236-8FF9-10F437C3AD48}") = "RTOSDemo", "RTOSDemo\RTOSDemo.cproj", "{DCE6C7E3-EE26-4D79-826B-08594B9AD897}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|AVR = Debug|AVR
+		Release|AVR = Release|AVR
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{DCE6C7E3-EE26-4D79-826B-08594B9AD897}.Debug|AVR.ActiveCfg = Debug|AVR
+		{DCE6C7E3-EE26-4D79-826B-08594B9AD897}.Debug|AVR.Build.0 = Debug|AVR
+		{DCE6C7E3-EE26-4D79-826B-08594B9AD897}.Release|AVR.ActiveCfg = Release|AVR
+		{DCE6C7E3-EE26-4D79-826B-08594B9AD897}.Release|AVR.Build.0 = Release|AVR
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+EndGlobal
--- a/FreeRTOS/Demo/AVR_Dx_Atmel_Studio/RTOSDemo/FreeRTOSConfig.h
+++ b/FreeRTOS/Demo/AVR_Dx_Atmel_Studio/RTOSDemo/FreeRTOSConfig.h
@ -0,0 +1,132 @@
+/*
+ * FreeRTOS Kernel V10.0.0
+ * Copyright (C) 2017 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+ * the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software. If you wish to use our Amazon
+ * FreeRTOS name, please do so in a fair use way that does not cause confusion.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+ * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * http://www.FreeRTOS.org
+ * http://aws.amazon.com/freertos
+ *
+ * 1 tab == 4 spaces!
+ */
+
+#ifndef FREERTOS_CONFIG_H
+#define FREERTOS_CONFIG_H
+
+/*
+ * #define TCB_t to avoid conflicts between the
+ * FreeRTOS task control block type (TCB_t) and the
+ * AVR Timer Counter B type (TCB_t)
+ */
+#define TCB_t avrTCB_t
+#include <avr/io.h>
+#undef TCB_t
+
+/*
+ * Timer instance  |  Value
+ * ----------------|---------
+ *     TCB0        |    0  
+ *     TCB1        |    1  
+ *     TCB2        |    2  
+ *     TCB3        |    3  
+ *     TCB4        |    4  
+ *     RTC         |    5  
+ */
+
+#define configUSE_TIMER_INSTANCE 0
+#define configUSE_PREEMPTION 1
+
+/* NOTE: You can choose the following clock frequencies (Hz):
+24000000, 20000000, 16000000, 12000000, 10000000, 8000000,
+6000000,  5000000,  4000000,  3000000,  2000000,  1000000.
+For other frequency values, update clock_config.h with your own settings */
+#define configCPU_CLOCK_HZ 10000000
+
+#define configTICK_RATE_HZ 1000
+#define configMAX_PRIORITIES 4
+#define configMINIMAL_STACK_SIZE 120
+#define configMAX_TASK_NAME_LEN 8
+#define configUSE_16_BIT_TICKS 1
+#define configIDLE_SHOULD_YIELD 1
+#define configUSE_TASK_NOTIFICATIONS 1
+#define configUSE_MUTEXES 1
+#define configUSE_RECURSIVE_MUTEXES 1
+#define configUSE_COUNTING_SEMAPHORES 0
+#define configQUEUE_REGISTRY_SIZE 2
+#define configUSE_QUEUE_SETS 0
+#define configUSE_TIME_SLICING 1
+#define configUSE_NEWLIB_REENTRANT 0
+#define configENABLE_BACKWARD_COMPATIBILITY 0
+#define configNUM_THREAD_LOCAL_STORAGE_POINTERS 0
+
+/* Memory allocation related definitions. */
+#define configSUPPORT_STATIC_ALLOCATION 0
+#define configSUPPORT_DYNAMIC_ALLOCATION 1
+#define configTOTAL_HEAP_SIZE 0x1000
+#define configAPPLICATION_ALLOCATED_HEAP 0
+
+/* Hook function related definitions. */
+#define configUSE_IDLE_HOOK 1
+#define configUSE_TICK_HOOK 1
+#define configCHECK_FOR_STACK_OVERFLOW 1
+#define configUSE_MALLOC_FAILED_HOOK 1
+#define configUSE_DAEMON_TASK_STARTUP_HOOK 0
+
+/* Run time and task stats gathering related definitions. */
+#define configGENERATE_RUN_TIME_STATS 0
+#define configUSE_TRACE_FACILITY 0
+#define configUSE_STATS_FORMATTING_FUNCTIONS 0
+
+/* Co-routine related definitions. */
+#define configUSE_CO_ROUTINES 1
+#define configMAX_CO_ROUTINE_PRIORITIES 2
+
+/* Software timer related definitions. */
+#define configUSE_TIMERS 1
+#define configTIMER_TASK_PRIORITY ( configMAX_PRIORITIES - 1 )
+#define configTIMER_QUEUE_LENGTH 10
+#define configTIMER_TASK_STACK_DEPTH ( configMINIMAL_STACK_SIZE * 2 )
+
+/* Define to trap errors during development. */
+//#define configASSERT(  x  ) if( ( x ) == 0 ) { asm volatile ("cli"); while(1){ asm volatile ("BREAK"); } }
+
+/* Optional functions - most linkers will remove unused functions anyway. */
+#define INCLUDE_vTaskPrioritySet 1
+#define INCLUDE_uxTaskPriorityGet 0
+#define INCLUDE_vTaskDelete 0
+#define INCLUDE_vTaskSuspend 1
+#define INCLUDE_xResumeFromISR 0
+#define INCLUDE_vTaskDelayUntil 1
+#define INCLUDE_vTaskDelay 1
+#define INCLUDE_xTaskGetSchedulerState 0
+#define INCLUDE_xTaskGetCurrentTaskHandle 0
+#define INCLUDE_uxTaskGetStackHighWaterMark 0
+#define INCLUDE_xTaskGetIdleTaskHandle 0
+#define INCLUDE_eTaskGetState 0
+#define INCLUDE_xEventGroupSetBitFromISR 0
+#define INCLUDE_xTimerPendFunctionCall 0
+#define INCLUDE_xTaskAbortDelay 0
+#define INCLUDE_xTaskGetHandle 0
+#define INCLUDE_xTaskResumeFromISR 0
+
+#define pdMS_TO_TICKS(xTimeInMs) ((TickType_t)(((uint32_t)(xTimeInMs) * (uint32_t)configTICK_RATE_HZ) / (uint32_t)1000))
+
+#define recmuRECURSIVE_MUTEX_TEST_TASK_STACK_SIZE (configMINIMAL_STACK_SIZE * 2)
+
+#endif /* FREERTOS_CONFIG_H */
--- a/FreeRTOS/Demo/AVR_Dx_Atmel_Studio/RTOSDemo/ParTest/partest.c
+++ b/FreeRTOS/Demo/AVR_Dx_Atmel_Studio/RTOSDemo/ParTest/partest.c
@ -0,0 +1,88 @@
+/*
+ * FreeRTOS Kernel V10.3.0
+ * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+ * the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+ * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * http://www.FreeRTOS.org
+ * http://aws.amazon.com/freertos
+ *
+ * 1 tab == 4 spaces!
+ */
+
+#include "FreeRTOS.h"
+#include "task.h"
+#include "partest.h"
+
+/*-----------------------------------------------------------
+ * Simple parallel port IO routines.
+ *-----------------------------------------------------------*/
+
+#define partstALL_BITS_OUTPUT			( ( unsigned char ) 0xff )
+#define partstALL_OUTPUTS_OFF			( ( unsigned char ) 0xff )
+#define partstMAX_OUTPUT_LED			( ( unsigned char ) 7 )
+
+/*-----------------------------------------------------------*/
+
+void vParTestInitialise( void )
+{
+	PORTC.DIRSET = partstALL_BITS_OUTPUT;
+	PORTC.OUTCLR = partstALL_OUTPUTS_OFF;
+}
+/*-----------------------------------------------------------*/
+
+void vParTestSetLED( UBaseType_t uxLED, BaseType_t xValue )
+{
+unsigned char ucBit = ( unsigned char ) 1;
+
+	if( uxLED <= partstMAX_OUTPUT_LED )
+	{
+		ucBit <<= uxLED;
+
+		vTaskSuspendAll();
+		{
+			if( xValue == pdTRUE )
+			{
+				PORTC.OUTSET = ucBit;
+			}
+			else
+			{
+				PORTC.OUTCLR = ucBit;
+			}
+
+		}
+		xTaskResumeAll();
+	}
+}
+/*-----------------------------------------------------------*/
+
+void vParTestToggleLED( UBaseType_t uxLED )
+{
+unsigned char ucBit;
+
+	if( uxLED <= partstMAX_OUTPUT_LED )
+	{
+		ucBit = ( ( unsigned char ) 1 ) << uxLED;
+
+		vTaskSuspendAll();
+		{
+			PORTC.OUTTGL = ucBit;
+		}
+		xTaskResumeAll();			
+	}
+}
--- a/FreeRTOS/Demo/AVR_Dx_Atmel_Studio/RTOSDemo/RTOSDemo.componentinfo.xml
+++ b/FreeRTOS/Demo/AVR_Dx_Atmel_Studio/RTOSDemo/RTOSDemo.componentinfo.xml
@ -0,0 +1,86 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Store xmlns:i="http://www.w3.org/2001/XMLSchema-instance" xmlns="AtmelPackComponentManagement">
+	<ProjectComponents>
+		<ProjectComponent z:Id="i1" xmlns:z="http://schemas.microsoft.com/2003/10/Serialization/">
+			<CApiVersion></CApiVersion>
+			<CBundle></CBundle>
+			<CClass>Device</CClass>
+			<CGroup>Startup</CGroup>
+			<CSub></CSub>
+			<CVariant></CVariant>
+			<CVendor>Atmel</CVendor>
+			<CVersion>1.2.0</CVersion>
+			<DefaultRepoPath>C:/Program Files (x86)\Atmel\Studio\7.0\Packs</DefaultRepoPath>
+			<DependentComponents xmlns:d4p1="http://schemas.microsoft.com/2003/10/Serialization/Arrays" />
+			<Description></Description>
+			<Files xmlns:d4p1="http://schemas.microsoft.com/2003/10/Serialization/Arrays">
+				<d4p1:anyType i:type="FileInfo">
+					<AbsolutePath>C:/Program Files (x86)\Atmel\Studio\7.0\Packs\Atmel\AVR-Dx_DFP\1.2.56\include</AbsolutePath>
+					<Attribute></Attribute>
+					<Category>include</Category>
+					<Condition>C</Condition>
+					<FileContentHash i:nil="true" />
+					<FileVersion></FileVersion>
+					<Name>include</Name>
+					<SelectString></SelectString>
+					<SourcePath></SourcePath>
+				</d4p1:anyType>
+				<d4p1:anyType i:type="FileInfo">
+					<AbsolutePath>C:/Program Files (x86)\Atmel\Studio\7.0\Packs\Atmel\AVR-Dx_DFP\1.2.56\include\avr\ioavr128da48.h</AbsolutePath>
+					<Attribute></Attribute>
+					<Category>header</Category>
+					<Condition>C</Condition>
+					<FileContentHash>eBF2rQUT5y0eCTjfyvG0Jw==</FileContentHash>
+					<FileVersion></FileVersion>
+					<Name>include/avr/ioavr128da48.h</Name>
+					<SelectString></SelectString>
+					<SourcePath></SourcePath>
+				</d4p1:anyType>
+				<d4p1:anyType i:type="FileInfo">
+					<AbsolutePath>C:/Program Files (x86)\Atmel\Studio\7.0\Packs\Atmel\AVR-Dx_DFP\1.2.56\templates\main.c</AbsolutePath>
+					<Attribute>template</Attribute>
+					<Category>source</Category>
+					<Condition>C Exe</Condition>
+					<FileContentHash>KjvOcFWd++tbnsEMfVPd/w==</FileContentHash>
+					<FileVersion></FileVersion>
+					<Name>templates/main.c</Name>
+					<SelectString>Main file (.c)</SelectString>
+					<SourcePath></SourcePath>
+				</d4p1:anyType>
+				<d4p1:anyType i:type="FileInfo">
+					<AbsolutePath>C:/Program Files (x86)\Atmel\Studio\7.0\Packs\Atmel\AVR-Dx_DFP\1.2.56\templates\main.cpp</AbsolutePath>
+					<Attribute>template</Attribute>
+					<Category>source</Category>
+					<Condition>C Exe</Condition>
+					<FileContentHash>mkKaE95TOoATsuBGv6jmxg==</FileContentHash>
+					<FileVersion></FileVersion>
+					<Name>templates/main.cpp</Name>
+					<SelectString>Main file (.cpp)</SelectString>
+					<SourcePath></SourcePath>
+				</d4p1:anyType>
+				<d4p1:anyType i:type="FileInfo">
+					<AbsolutePath>C:/Program Files (x86)\Atmel\Studio\7.0\Packs\Atmel\AVR-Dx_DFP\1.2.56\gcc\dev\avr128da48</AbsolutePath>
+					<Attribute></Attribute>
+					<Category>libraryPrefix</Category>
+					<Condition>GCC</Condition>
+					<FileContentHash i:nil="true" />
+					<FileVersion></FileVersion>
+					<Name>gcc/dev/avr128da48</Name>
+					<SelectString></SelectString>
+					<SourcePath></SourcePath>
+				</d4p1:anyType>
+			</Files>
+			<PackName>AVR-Dx_DFP</PackName>
+			<PackPath>C:/Program Files (x86)/Atmel/Studio/7.0/Packs/Atmel/AVR-Dx_DFP/1.2.56/Atmel.AVR-Dx_DFP.pdsc</PackPath>
+			<PackVersion>1.2.56</PackVersion>
+			<PresentInProject>true</PresentInProject>
+			<ReferenceConditionId>AVR128DA48</ReferenceConditionId>
+			<RteComponents xmlns:d4p1="http://schemas.microsoft.com/2003/10/Serialization/Arrays">
+				<d4p1:string></d4p1:string>
+			</RteComponents>
+			<Status>Resolved</Status>
+			<VersionMode>Fixed</VersionMode>
+			<IsComponentInAtProject>true</IsComponentInAtProject>
+		</ProjectComponent>
+	</ProjectComponents>
+</Store>
--- a/FreeRTOS/Demo/AVR_Dx_Atmel_Studio/RTOSDemo/RTOSDemo.cproj
+++ b/FreeRTOS/Demo/AVR_Dx_Atmel_Studio/RTOSDemo/RTOSDemo.cproj
@ -0,0 +1,383 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003" ToolsVersion="14.0">
+  <PropertyGroup>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectVersion>7.0</ProjectVersion>
+    <ToolchainName>com.Atmel.AVRGCC8.C</ToolchainName>
+    <ProjectGuid>dce6c7e3-ee26-4d79-826b-08594b9ad897</ProjectGuid>
+    <avrdevice>AVR128DA48</avrdevice>
+    <avrdeviceseries>none</avrdeviceseries>
+    <OutputType>Executable</OutputType>
+    <Language>C</Language>
+    <OutputFileName>$(MSBuildProjectName)</OutputFileName>
+    <OutputFileExtension>.elf</OutputFileExtension>
+    <OutputDirectory>$(MSBuildProjectDirectory)\$(Configuration)</OutputDirectory>
+    <AssemblyName>AVRDx_BlinkyDemo</AssemblyName>
+    <Name>RTOSDemo</Name>
+    <RootNamespace>AVRDx_BlinkyDemo</RootNamespace>
+    <ToolchainFlavour>Native</ToolchainFlavour>
+    <KeepTimersRunning>true</KeepTimersRunning>
+    <OverrideVtor>false</OverrideVtor>
+    <CacheFlash>true</CacheFlash>
+    <ProgFlashFromRam>true</ProgFlashFromRam>
+    <RamSnippetAddress>0x20000000</RamSnippetAddress>
+    <UncachedRange />
+    <preserveEEPROM>true</preserveEEPROM>
+    <OverrideVtorValue>exception_table</OverrideVtorValue>
+    <BootSegment>2</BootSegment>
+    <ResetRule>0</ResetRule>
+    <eraseonlaunchrule>0</eraseonlaunchrule>
+    <EraseKey />
+    <AsfFrameworkConfig>
+      <framework-data xmlns="">
+        <options />
+        <configurations />
+        <files />
+        <documentation help="" />
+        <offline-documentation help="" />
+        <dependencies>
+          <content-extension eid="atmel.asf" uuidref="Atmel.ASF" version="3.47.0" />
+        </dependencies>
+      </framework-data>
+    </AsfFrameworkConfig>
+    <avrtool>com.atmel.avrdbg.tool.nedbg</avrtool>
+    <avrtoolserialnumber>MCHP3280031800000581</avrtoolserialnumber>
+    <avrdeviceexpectedsignature>0x1E9708</avrdeviceexpectedsignature>
+    <avrtoolinterface>UPDI</avrtoolinterface>
+    <com_atmel_avrdbg_tool_nedbg>
+      <ToolOptions>
+        <InterfaceProperties>
+          <UpdiClock>750000</UpdiClock>
+        </InterfaceProperties>
+        <InterfaceName>UPDI</InterfaceName>
+      </ToolOptions>
+      <ToolType>com.atmel.avrdbg.tool.nedbg</ToolType>
+      <ToolNumber>MCHP3280031800000581</ToolNumber>
+      <ToolName>nEDBG</ToolName>
+    </com_atmel_avrdbg_tool_nedbg>
+    <avrtoolinterfaceclock>750000</avrtoolinterfaceclock>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)' == 'Release' ">
+    <ToolchainSettings>
+      <AvrGcc>
+  <avrgcc.common.Device>-mmcu=avr128da48 -B "%24(PackRepoDir)\Atmel\AVR-Dx_DFP\1.2.56\gcc\dev\avr128da48"</avrgcc.common.Device>
+  <avrgcc.common.outputfiles.hex>True</avrgcc.common.outputfiles.hex>
+  <avrgcc.common.outputfiles.lss>True</avrgcc.common.outputfiles.lss>
+  <avrgcc.common.outputfiles.eep>True</avrgcc.common.outputfiles.eep>
+  <avrgcc.common.outputfiles.srec>True</avrgcc.common.outputfiles.srec>
+  <avrgcc.common.outputfiles.usersignatures>False</avrgcc.common.outputfiles.usersignatures>
+  <avrgcc.compiler.general.ChangeDefaultCharTypeUnsigned>True</avrgcc.compiler.general.ChangeDefaultCharTypeUnsigned>
+  <avrgcc.compiler.general.ChangeDefaultBitFieldUnsigned>True</avrgcc.compiler.general.ChangeDefaultBitFieldUnsigned>
+  <avrgcc.compiler.symbols.DefSymbols>
+    <ListValues>
+      <Value>NDEBUG</Value>
+    </ListValues>
+  </avrgcc.compiler.symbols.DefSymbols>
+  <avrgcc.compiler.directories.IncludePaths>
+    <ListValues>
+      <Value>%24(PackRepoDir)\Atmel\AVR-Dx_DFP\1.2.56\include</Value>
+    </ListValues>
+  </avrgcc.compiler.directories.IncludePaths>
+  <avrgcc.compiler.optimization.level>Optimize for size (-Os)</avrgcc.compiler.optimization.level>
+  <avrgcc.compiler.optimization.PackStructureMembers>True</avrgcc.compiler.optimization.PackStructureMembers>
+  <avrgcc.compiler.optimization.AllocateBytesNeededForEnum>True</avrgcc.compiler.optimization.AllocateBytesNeededForEnum>
+  <avrgcc.compiler.warnings.AllWarnings>True</avrgcc.compiler.warnings.AllWarnings>
+  <avrgcc.linker.libraries.Libraries>
+    <ListValues>
+      <Value>libm</Value>
+    </ListValues>
+  </avrgcc.linker.libraries.Libraries>
+  <avrgcc.assembler.general.IncludePaths>
+    <ListValues>
+      <Value>%24(PackRepoDir)\Atmel\AVR-Dx_DFP\1.2.56\include</Value>
+    </ListValues>
+  </avrgcc.assembler.general.IncludePaths>
+</AvrGcc>
+    </ToolchainSettings>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)' == 'Debug' ">
+    <ToolchainSettings>
+      <AvrGcc>
+  <avrgcc.common.Device>-mmcu=avr128da48 -B "%24(PackRepoDir)\Atmel\AVR-Dx_DFP\1.2.56\gcc\dev\avr128da48"</avrgcc.common.Device>
+  <avrgcc.common.outputfiles.hex>True</avrgcc.common.outputfiles.hex>
+  <avrgcc.common.outputfiles.lss>True</avrgcc.common.outputfiles.lss>
+  <avrgcc.common.outputfiles.eep>True</avrgcc.common.outputfiles.eep>
+  <avrgcc.common.outputfiles.srec>True</avrgcc.common.outputfiles.srec>
+  <avrgcc.common.outputfiles.usersignatures>False</avrgcc.common.outputfiles.usersignatures>
+  <avrgcc.compiler.general.ChangeDefaultCharTypeUnsigned>True</avrgcc.compiler.general.ChangeDefaultCharTypeUnsigned>
+  <avrgcc.compiler.general.ChangeDefaultBitFieldUnsigned>True</avrgcc.compiler.general.ChangeDefaultBitFieldUnsigned>
+  <avrgcc.compiler.symbols.DefSymbols>
+    <ListValues>
+      <Value>DEBUG</Value>
+    </ListValues>
+  </avrgcc.compiler.symbols.DefSymbols>
+  <avrgcc.compiler.directories.IncludePaths>
+    <ListValues>
+      <Value>../../../../Source</Value>
+      <Value>../../../../Source/portable/MemMang</Value>
+      <Value>../../../../Source/portable/GCC/AVR_AVRDx</Value>
+      <Value>../../../../Source/include</Value>
+      <Value>../../../Common/include</Value>
+      <Value>../../../Common/Minimal</Value>
+      <Value>../../../Common/Full</Value>
+      <Value>../ParTest</Value>
+      <Value>../serial</Value>
+      <Value>..</Value>
+      <Value>%24(PackRepoDir)\Atmel\AVR-Dx_DFP\1.2.56\include</Value>
+    </ListValues>
+  </avrgcc.compiler.directories.IncludePaths>
+  <avrgcc.compiler.optimization.level>Optimize for size (-Os)</avrgcc.compiler.optimization.level>
+  <avrgcc.compiler.optimization.PackStructureMembers>True</avrgcc.compiler.optimization.PackStructureMembers>
+  <avrgcc.compiler.optimization.AllocateBytesNeededForEnum>True</avrgcc.compiler.optimization.AllocateBytesNeededForEnum>
+  <avrgcc.compiler.optimization.DebugLevel>Default (-g2)</avrgcc.compiler.optimization.DebugLevel>
+  <avrgcc.compiler.warnings.AllWarnings>True</avrgcc.compiler.warnings.AllWarnings>
+  <avrgcc.linker.libraries.Libraries>
+    <ListValues>
+      <Value>libm</Value>
+    </ListValues>
+  </avrgcc.linker.libraries.Libraries>
+  <avrgcc.assembler.general.IncludePaths>
+    <ListValues>
+      <Value>%24(PackRepoDir)\Atmel\AVR-Dx_DFP\1.2.56\include</Value>
+    </ListValues>
+  </avrgcc.assembler.general.IncludePaths>
+  <avrgcc.assembler.debugging.DebugLevel>Default (-Wa,-g)</avrgcc.assembler.debugging.DebugLevel>
+</AvrGcc>
+    </ToolchainSettings>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="clk_config.h">
+      <SubType>compile</SubType>
+    </Compile>
+    <Compile Include="FreeRTOSConfig.h">
+      <SubType>compile</SubType>
+    </Compile>
+    <Compile Include="..\..\..\Source\croutine.c">
+      <SubType>compile</SubType>
+      <Link>freeRTOS\croutine.c</Link>
+    </Compile>
+    <Compile Include="..\..\..\Source\event_groups.c">
+      <SubType>compile</SubType>
+      <Link>freeRTOS\event_groups.c</Link>
+    </Compile>
+    <Compile Include="..\..\..\Source\list.c">
+      <SubType>compile</SubType>
+      <Link>freeRTOS\list.c</Link>
+    </Compile>
+    <Compile Include="..\..\..\Source\queue.c">
+      <SubType>compile</SubType>
+      <Link>freeRTOS\queue.c</Link>
+    </Compile>
+    <Compile Include="..\..\..\Source\stream_buffer.c">
+      <SubType>compile</SubType>
+      <Link>freeRTOS\stream_buffer.c</Link>
+    </Compile>
+    <Compile Include="..\..\..\Source\tasks.c">
+      <SubType>compile</SubType>
+      <Link>freeRTOS\tasks.c</Link>
+    </Compile>
+    <Compile Include="..\..\..\Source\timers.c">
+      <SubType>compile</SubType>
+      <Link>freeRTOS\timers.c</Link>
+    </Compile>
+    <Compile Include="..\..\..\Source\portable\MemMang\heap_1.c">
+      <SubType>compile</SubType>
+      <Link>freeRTOS\portable\MemMang\heap_1.c</Link>
+    </Compile>
+    <Compile Include="..\..\..\Source\portable\GCC\AVR_AVRDx\port.c">
+      <SubType>compile</SubType>
+      <Link>freeRTOS\portable\GCC\AVR_AVRDx\port.c</Link>
+    </Compile>
+    <Compile Include="..\..\..\Source\portable\GCC\AVR_AVRDx\portmacro.h">
+      <SubType>compile</SubType>
+      <Link>freeRTOS\portable\GCC\AVR_AVRDx\portmacro.h</Link>
+    </Compile>
+    <Compile Include="..\..\..\Source\portable\GCC\AVR_AVRDx\porthardware.h">
+      <SubType>compile</SubType>
+      <Link>freeRTOS\portable\GCC\AVR_AVRDx\porthardware.h</Link>
+    </Compile>
+    <Compile Include="..\..\..\Source\include\atomic.h">
+      <SubType>compile</SubType>
+      <Link>freeRTOS\include\atomic.h</Link>
+    </Compile>
+    <Compile Include="..\..\..\Source\include\croutine.h">
+      <SubType>compile</SubType>
+      <Link>freeRTOS\include\croutine.h</Link>
+    </Compile>
+    <Compile Include="..\..\..\Source\include\deprecated_definitions.h">
+      <SubType>compile</SubType>
+      <Link>freeRTOS\include\deprecated_definitions.h</Link>
+    </Compile>
+    <Compile Include="..\..\..\Source\include\event_groups.h">
+      <SubType>compile</SubType>
+      <Link>freeRTOS\include\event_groups.h</Link>
+    </Compile>
+    <Compile Include="..\..\..\Source\include\FreeRTOS.h">
+      <SubType>compile</SubType>
+      <Link>freeRTOS\include\FreeRTOS.h</Link>
+    </Compile>
+    <Compile Include="..\..\..\Source\include\list.h">
+      <SubType>compile</SubType>
+      <Link>freeRTOS\include\list.h</Link>
+    </Compile>
+    <Compile Include="..\..\..\Source\include\message_buffer.h">
+      <SubType>compile</SubType>
+      <Link>freeRTOS\include\message_buffer.h</Link>
+    </Compile>
+    <Compile Include="..\..\..\Source\include\mpu_prototypes.h">
+      <SubType>compile</SubType>
+      <Link>freeRTOS\include\mpu_prototypes.h</Link>
+    </Compile>
+    <Compile Include="..\..\..\Source\include\mpu_wrappers.h">
+      <SubType>compile</SubType>
+      <Link>freeRTOS\include\mpu_wrappers.h</Link>
+    </Compile>
+    <Compile Include="..\..\..\Source\include\portable.h">
+      <SubType>compile</SubType>
+      <Link>freeRTOS\include\portable.h</Link>
+    </Compile>
+    <Compile Include="..\..\..\Source\include\projdefs.h">
+      <SubType>compile</SubType>
+      <Link>freeRTOS\include\projdefs.h</Link>
+    </Compile>
+    <Compile Include="..\..\..\Source\include\queue.h">
+      <SubType>compile</SubType>
+      <Link>freeRTOS\include\queue.h</Link>
+    </Compile>
+    <Compile Include="..\..\..\Source\include\semphr.h">
+      <SubType>compile</SubType>
+      <Link>freeRTOS\include\semphr.h</Link>
+    </Compile>
+    <Compile Include="..\..\..\Source\include\stack_macros.h">
+      <SubType>compile</SubType>
+      <Link>freeRTOS\include\stack_macros.h</Link>
+    </Compile>
+    <Compile Include="..\..\..\Source\include\StackMacros.h">
+      <SubType>compile</SubType>
+      <Link>freeRTOS\include\StackMacros.h</Link>
+    </Compile>
+    <Compile Include="..\..\..\Source\include\stream_buffer.h">
+      <SubType>compile</SubType>
+      <Link>freeRTOS\include\stream_buffer.h</Link>
+    </Compile>
+    <Compile Include="..\..\..\Source\include\task.h">
+      <SubType>compile</SubType>
+      <Link>freeRTOS\include\task.h</Link>
+    </Compile>
+    <Compile Include="..\..\..\Source\include\timers.h">
+      <SubType>compile</SubType>
+      <Link>freeRTOS\include\timers.h</Link>
+    </Compile>
+    <Compile Include="main.c">
+      <SubType>compile</SubType>
+    </Compile>
+    <Compile Include="main_blinky.c">
+      <SubType>compile</SubType>
+    </Compile>
+    <Compile Include="main_full.c">
+      <SubType>compile</SubType>
+    </Compile>
+    <Compile Include="main_minimal.c">
+      <SubType>compile</SubType>
+    </Compile>
+    <Compile Include="ParTest\partest.c">
+      <SubType>compile</SubType>
+    </Compile>
+    <Compile Include="regtest.c">
+      <SubType>compile</SubType>
+    </Compile>
+    <Compile Include="regtest.h">
+      <SubType>compile</SubType>
+    </Compile>
+    <Compile Include="serial\serial.c">
+      <SubType>compile</SubType>
+    </Compile>
+    <Compile Include="..\..\..\Demo\Common\include\comtest.h">
+      <SubType>compile</SubType>
+      <Link>Common\include\comtest.h</Link>
+    </Compile>
+    <Compile Include="..\..\..\Demo\Common\Minimal\comtest.c">
+      <SubType>compile</SubType>
+      <Link>Common\Minimal\comtest.c</Link>
+    </Compile>
+    <Compile Include="..\..\..\Demo\Common\include\integer.h">
+      <SubType>compile</SubType>
+      <Link>Common\include\integer.h</Link>
+    </Compile>
+    <Compile Include="..\..\..\Demo\Common\Minimal\integer.c">
+      <SubType>compile</SubType>
+      <Link>Common\Minimal\integer.c</Link>
+    </Compile>
+    <Compile Include="..\..\..\Demo\Common\include\PollQ.h">
+      <SubType>compile</SubType>
+      <Link>Common\include\PollQ.h</Link>
+    </Compile>
+    <Compile Include="..\..\..\Demo\Common\Minimal\PollQ.c">
+      <SubType>compile</SubType>
+      <Link>Common\Minimal\PollQ.c</Link>
+    </Compile>
+    <Compile Include="..\..\..\Demo\Common\include\crflash.h">
+      <SubType>compile</SubType>
+      <Link>Common\include\crflash.h</Link>
+    </Compile>
+    <Compile Include="..\..\..\Demo\Common\Minimal\crflash.c">
+      <SubType>compile</SubType>
+      <Link>Common\Minimal\crflash.c</Link>
+    </Compile>
+    <Compile Include="..\..\..\Demo\Common\include\serial.h">
+      <SubType>compile</SubType>
+      <Link>Common\include\serial.h</Link>
+    </Compile>
+    <Compile Include="..\..\..\Demo\Common\include\partest.h">
+      <SubType>compile</SubType>
+      <Link>Common\include\comtest.h</Link>
+    </Compile>
+    <Compile Include="..\..\..\Demo\Common\include\recmutex.h">
+      <SubType>compile</SubType>
+      <Link>Common\include\recmutex.h</Link>
+    </Compile>
+    <Compile Include="..\..\..\Demo\Common\Minimal\recmutex.c">
+      <SubType>compile</SubType>
+      <Link>Common\Minimal\recmutex.c</Link>
+    </Compile>
+    <Compile Include="..\..\..\Demo\Common\include\TaskNotify.h">
+      <SubType>compile</SubType>
+      <Link>Common\include\TaskNotify.h</Link>
+    </Compile>
+    <Compile Include="..\..\..\Demo\Common\Minimal\TaskNotify.c">
+      <SubType>compile</SubType>
+      <Link>Common\Minimal\TaskNotify.c</Link>
+    </Compile>
+    <Compile Include="..\..\..\Demo\Common\include\semtest.h">
+      <SubType>compile</SubType>
+      <Link>Common\include\semtest.h</Link>
+    </Compile>
+    <Compile Include="..\..\..\Demo\Common\Full\semtest.c">
+      <SubType>compile</SubType>
+      <Link>Common\Full\semtest.c</Link>
+    </Compile>
+    <Compile Include="..\..\..\Demo\Common\include\print.h">
+      <SubType>compile</SubType>
+      <Link>Common\include\print.h</Link>
+    </Compile>
+    <Compile Include="..\..\..\Demo\Common\Full\print.c">
+      <SubType>compile</SubType>
+      <Link>Common\Full\print.c</Link>
+    </Compile>
+  </ItemGroup>
+  <ItemGroup>
+    <Folder Include="freeRTOS\" />
+    <Folder Include="freeRTOS\include" />
+    <Folder Include="freeRTOS\portable" />
+    <Folder Include="freeRTOS\portable\GCC" />
+    <Folder Include="freeRTOS\portable\GCC\AVR_AVRDx" />
+    <Folder Include="freeRTOS\portable\MemMang" />
+    <Folder Include="serial" />
+    <Folder Include="ParTest" />
+    <Folder Include="Common\" />
+    <Folder Include="Common\include" />
+    <Folder Include="Common\Minimal" />
+    <Folder Include="Common\Full" />
+  </ItemGroup>
+  <Import Project="$(AVRSTUDIO_EXE_PATH)\\Vs\\Compiler.targets" />
+</Project>
--- a/FreeRTOS/Demo/AVR_Dx_Atmel_Studio/RTOSDemo/clk_config.h
+++ b/FreeRTOS/Demo/AVR_Dx_Atmel_Studio/RTOSDemo/clk_config.h
@ -0,0 +1,64 @@
+#ifndef CLK_CONFIG_H_
+#define CLK_CONFIG_H_
+
+#include "FreeRTOSConfig.h"
+
+#if (configCPU_CLOCK_HZ == 24000000)
+
+	#define CLK_init()	_PROTECTED_WRITE(CLKCTRL.OSCHFCTRLA, CLKCTRL_FREQSEL_24M_gc);
+
+#elif (configCPU_CLOCK_HZ == 20000000)
+
+	#define CLK_init()	_PROTECTED_WRITE(CLKCTRL.OSCHFCTRLA, CLKCTRL_FREQSEL_20M_gc);
+
+#elif (configCPU_CLOCK_HZ == 16000000)
+
+	#define CLK_init()	_PROTECTED_WRITE(CLKCTRL.OSCHFCTRLA, CLKCTRL_FREQSEL_16M_gc);
+
+#elif (configCPU_CLOCK_HZ == 12000000)
+
+	#define CLK_init()	_PROTECTED_WRITE(CLKCTRL.OSCHFCTRLA, CLKCTRL_FREQSEL_12M_gc);
+
+#elif (configCPU_CLOCK_HZ == 10000000)
+
+	#define CLK_init()	_PROTECTED_WRITE(CLKCTRL.OSCHFCTRLA, CLKCTRL_FREQSEL_20M_gc);\
+						_PROTECTED_WRITE(CLKCTRL.MCLKCTRLB, CLKCTRL_PDIV_2X_gc | CLKCTRL_PEN_bm);
+
+#elif (configCPU_CLOCK_HZ == 8000000)
+
+	#define CLK_init()	_PROTECTED_WRITE(CLKCTRL.OSCHFCTRLA, CLKCTRL_FREQSEL_8M_gc);
+
+#elif (configCPU_CLOCK_HZ == 6000000)
+
+	#define CLK_init()	_PROTECTED_WRITE(CLKCTRL.OSCHFCTRLA, CLKCTRL_FREQSEL_12M_gc);\
+						_PROTECTED_WRITE(CLKCTRL.MCLKCTRLB, CLKCTRL_PDIV_2X_gc | CLKCTRL_PEN_bm);
+
+#elif (configCPU_CLOCK_HZ == 5000000)
+
+	#define CLK_init()	_PROTECTED_WRITE(CLKCTRL.OSCHFCTRLA, CLKCTRL_FREQSEL_20M_gc);\
+						_PROTECTED_WRITE(CLKCTRL.MCLKCTRLB, CLKCTRL_PDIV_4X_gc | CLKCTRL_PEN_bm);
+
+#elif (configCPU_CLOCK_HZ == 4000000)
+
+	#define CLK_init()	_PROTECTED_WRITE(CLKCTRL.OSCHFCTRLA, CLKCTRL_FREQSEL_4M_gc);
+
+#elif (configCPU_CLOCK_HZ == 3000000)
+
+	#define CLK_init()	_PROTECTED_WRITE(CLKCTRL.OSCHFCTRLA, CLKCTRL_FREQSEL_12M_gc);\
+						_PROTECTED_WRITE(CLKCTRL.MCLKCTRLB, CLKCTRL_PDIV_4X_gc | CLKCTRL_PEN_bm);
+
+#elif (configCPU_CLOCK_HZ == 2000000)
+
+	#define CLK_init()	_PROTECTED_WRITE(CLKCTRL.OSCHFCTRLA, CLKCTRL_FREQSEL_2M_gc);
+
+#elif (configCPU_CLOCK_HZ == 1000000)
+
+	#define CLK_init()	_PROTECTED_WRITE(CLKCTRL.OSCHFCTRLA, CLKCTRL_FREQSEL_1M_gc);
+
+#else
+
+	#error The selected clock frequency is not supported. Choose a value from the NOTE in FreeRTOSConfig.h.
+
+#endif
+
+#endif /* CLK_CONFIG_H_ */
--- a/FreeRTOS/Demo/AVR_Dx_Atmel_Studio/RTOSDemo/main.c
+++ b/FreeRTOS/Demo/AVR_Dx_Atmel_Studio/RTOSDemo/main.c
@ -0,0 +1,97 @@
+/*
+(C) 2020 Microchip Technology Inc. and its subsidiaries.
+
+Subject to your compliance with these terms, you may use Microchip software and
+any derivatives exclusively with Microchip products. It is your responsibility
+to comply with third party license terms applicable to your use of third party
+software (including open source software) that may accompany Microchip software.
+
+THIS SOFTWARE IS SUPPLIED BY MICROCHIP "AS IS".  NO WARRANTIES, WHETHER EXPRESS,
+IMPLIED OR STATUTORY, APPLY TO THIS SOFTWARE, INCLUDING ANY IMPLIED WARRANTIES
+OF NON-INFRINGEMENT, MERCHANTABILITY, AND FITNESS FOR A PARTICULAR PURPOSE.
+IN NO EVENT WILL MICROCHIP BE LIABLE FOR ANY INDIRECT, SPECIAL, PUNITIVE,
+INCIDENTAL OR CONSEQUENTIAL LOSS, DAMAGE, COST OR EXPENSE OF ANY KIND WHATSOEVER
+RELATED TO THE SOFTWARE, HOWEVER CAUSED, EVEN IF MICROCHIP HAS BEEN ADVISED OF
+THE POSSIBILITY OR THE DAMAGES ARE FORESEEABLE.  TO THE FULLEST EXTENT ALLOWED
+BY LAW, MICROCHIP'S TOTAL LIABILITY ON ALL CLAIMS IN ANY WAY RELATED TO THIS
+SOFTWARE WILL NOT EXCEED THE AMOUNT OF FEES, IF ANY, THAT YOU HAVE PAID DIRECTLY
+TO MICROCHIP FOR THIS SOFTWARE.
+*/
+
+#include <avr/io.h>
+#include "FreeRTOS.h"
+#include "TaskNotify.h"
+#include "task.h"
+#include "clk_config.h"
+
+#define mainSELECTED_APPLICATION	0
+
+/*
+ * Configure the hardware as necessary to run this demo.
+ */
+static void prvSetupHardware( void );
+
+#if ( mainSELECTED_APPLICATION == 0 )
+extern void main_blinky( void );
+extern void init_blinky( void );
+#elif ( mainSELECTED_APPLICATION == 1 )
+extern void main_minimal( void );
+extern void init_minimal( void );
+#elif ( mainSELECTED_APPLICATION == 2 )
+extern void main_full( void );
+extern void init_full( void );
+#else
+#error Invalid mainSELECTED_APPLICATION setting. See the comments at the top of this file and above the mainSELECTED_APPLICATION definition.
+#endif
+
+int main(void)
+{
+	prvSetupHardware();
+
+#if ( mainSELECTED_APPLICATION == 0 )
+	main_blinky();
+#elif ( mainSELECTED_APPLICATION == 1 )
+	main_minimal();
+#elif ( mainSELECTED_APPLICATION == 2 )
+	main_full();
+#endif
+	
+	return 0;
+}
+
+static void prvSetupHardware( void )
+{
+	/* Ensure no interrupts execute while the scheduler is in an inconsistent
+	state.  Interrupts are automatically enabled when the scheduler is
+	started. */
+	portDISABLE_INTERRUPTS();
+
+	CLK_init();
+
+#if ( mainSELECTED_APPLICATION == 0 )
+	init_blinky();
+#elif ( mainSELECTED_APPLICATION == 1 )
+	init_minimal();
+#elif ( mainSELECTED_APPLICATION == 2 )
+	init_full();
+#endif
+}
+
+void vApplicationTickHook( void )
+{
+#if( mainSELECTED_APPLICATION == 2 )
+	xNotifyTaskFromISR();
+#endif
+}
+
+void vApplicationStackOverflowHook(TaskHandle_t *pxTask, signed char *pcTaskName )
+{
+	asm volatile ("nop");
+	for( ;; );
+}
+
+void vApplicationMallocFailedHook( void )
+{
+	asm volatile ("nop");
+	for( ;; );
+}
--- a/FreeRTOS/Demo/AVR_Dx_Atmel_Studio/RTOSDemo/main_blinky.c
+++ b/FreeRTOS/Demo/AVR_Dx_Atmel_Studio/RTOSDemo/main_blinky.c
@ -0,0 +1,177 @@
+/*
+ * FreeRTOS Kernel V10.3.1
+ * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+ * the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+ * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * http://www.FreeRTOS.org
+ * http://aws.amazon.com/freertos
+ *
+ * 1 tab == 4 spaces!
+ */
+
+/******************************************************************************
+ *
+ * main_blinky() creates one queue, and two tasks.  It then starts the
+ * scheduler.
+ *
+ * The Queue Send Task:
+ * The queue send task is implemented by the prvQueueSendTask() function in
+ * this file.  prvQueueSendTask() sits in a loop that causes it to repeatedly
+ * block for 200 milliseconds, before sending the value 100 to the queue that
+ * was created within main_blinky().  Once the value is sent, the task loops
+ * back around to block for another 200 milliseconds...and so on.
+ *
+ * The Queue Receive Task:
+ * The queue receive task is implemented by the prvQueueReceiveTask() function
+ * in this file.  prvQueueReceiveTask() sits in a loop where it repeatedly
+ * blocks on attempts to read data from the queue that was created within
+ * main_blinky().  When data is received, the task checks the value of the
+ * data, and if the value equals the expected 100, toggles an LED.  The 'block
+ * time' parameter passed to the queue receive function specifies that the
+ * task should be held in the Blocked state indefinitely to wait for data to
+ * be available on the queue.  The queue receive task will only leave the
+ * Blocked state when the queue send task writes to the queue.  As the queue
+ * send task writes to the queue every 200 milliseconds, the queue receive
+ * task leaves the Blocked state every 200 milliseconds, and therefore toggles
+ * the LED every 200 milliseconds.
+ */
+
+#include <avr/io.h>
+
+/* Scheduler include files. */
+#include "FreeRTOS.h"
+#include "task.h"
+#include "semphr.h"
+
+/* Priorities at which the tasks are created. */
+#define mainQUEUE_RECEIVE_TASK_PRIORITY		( tskIDLE_PRIORITY + 2 )
+#define	mainQUEUE_SEND_TASK_PRIORITY		( tskIDLE_PRIORITY + 1 )
+
+/* The rate at which data is sent to the queue.  The 200ms value is converted
+to ticks using the portTICK_PERIOD_MS constant. */
+#define mainQUEUE_SEND_FREQUENCY_MS			( 200 / portTICK_PERIOD_MS )
+
+/* The number of items the queue can hold.  This is 1 as the receive task
+will remove items as they are added, meaning the send task should always find
+the queue empty. */
+#define mainQUEUE_LENGTH					( 1 )
+
+/*-----------------------------------------------------------*/
+
+/*
+ * The tasks as described in the comments at the top of this file.
+ */
+static void prvQueueReceiveTask( void *pvParameters );
+static void prvQueueSendTask( void *pvParameters );
+
+/*-----------------------------------------------------------*/
+
+/* The queue used by both tasks. */
+static QueueHandle_t xQueue = NULL;
+
+void main_blinky( void )
+{
+	/* Create the queue. */
+ 	xQueue = xQueueCreate( mainQUEUE_LENGTH, sizeof( uint32_t ) );
+ 
+	if( xQueue != NULL )
+	{
+		/* Start the two tasks as described in the comments at the top of this
+		file. */
+		xTaskCreate( prvQueueReceiveTask,				/* The function that implements the task. */
+					"Rx", 								/* The text name assigned to the task - for debug only as it is not used by the kernel. */
+					configMINIMAL_STACK_SIZE, 			/* The size of the stack to allocate to the task. */
+					NULL, 								/* The parameter passed to the task - not used in this case. */
+					mainQUEUE_RECEIVE_TASK_PRIORITY, 	/* The priority assigned to the task. */
+					NULL );								/* The task handle is not required, so NULL is passed. */
+
+		xTaskCreate( prvQueueSendTask, "TX", configMINIMAL_STACK_SIZE, NULL, mainQUEUE_SEND_TASK_PRIORITY, NULL );
+
+		/* Start the tasks and timer running. */
+		vTaskStartScheduler();
+	}
+
+	/* If all is well, the scheduler will now be running, and the following
+	line will never be reached.  If the following line does execute, then
+	there was either insufficient FreeRTOS heap memory available for the idle
+	and/or timer tasks to be created, or vTaskStartScheduler() was called from
+	User mode.  See the memory management section on the FreeRTOS web site for
+	more details on the FreeRTOS heap http://www.freertos.org/a00111.html.  The
+	mode from which main() is called is set in the C start up code and must be
+	a privileged mode (not user mode). */
+	for( ;; );
+}
+
+void init_blinky( void )
+{
+	/* Set PC6 as output. */
+	PORTC.DIRSET = PIN6_bm;
+}
+
+static void prvQueueSendTask( void *pvParameters )
+{
+TickType_t xNextWakeTime;
+const unsigned long ulValueToSend = 100UL;
+
+	/* Remove compiler warning about unused parameter. */
+	( void ) pvParameters;
+
+	/* Initialise xNextWakeTime - this only needs to be done once. */
+	xNextWakeTime = xTaskGetTickCount();
+
+	for( ;; )
+	{
+		/* Place this task in the blocked state until it is time to run again. */
+		vTaskDelayUntil( &xNextWakeTime, mainQUEUE_SEND_FREQUENCY_MS );
+
+		/* Send to the queue - causing the queue receive task to unblock and
+		toggle the LED.  0 is used as the block time so the sending operation
+		will not block - it shouldn't need to block as the queue should always
+		be empty at this point in the code. */
+		xQueueSend( xQueue, &ulValueToSend, 0U );
+	}
+}
+/*-----------------------------------------------------------*/
+
+static void prvQueueReceiveTask( void *pvParameters )
+{
+unsigned long ulReceivedValue;
+const unsigned long ulExpectedValue = 100UL;
+
+	/* Remove compiler warning about unused parameter. */
+	( void ) pvParameters;
+
+	for( ;; )
+	{
+		/* Wait until something arrives in the queue - this task will block
+		indefinitely provided INCLUDE_vTaskSuspend is set to 1 in
+		FreeRTOSConfig.h. */
+		xQueueReceive( xQueue, &ulReceivedValue, portMAX_DELAY );
+
+		/*  To get here something must have been received from the queue, but
+		is it the expected value?  If it is, toggle the LED. */
+		if( ulReceivedValue == ulExpectedValue )
+		{
+			/* Toggle LED on pin PC6. */
+			PORTC.OUTTGL |= PIN6_bm;
+			ulReceivedValue = 0U;
+		}
+	}
+}
+
--- a/FreeRTOS/Demo/AVR_Dx_Atmel_Studio/RTOSDemo/main_full.c
+++ b/FreeRTOS/Demo/AVR_Dx_Atmel_Studio/RTOSDemo/main_full.c
@ -0,0 +1,104 @@
+#include "FreeRTOS.h"
+#include "task.h"
+#include "partest.h"
+#include "semtest.h"
+#include "TaskNotify.h"
+#include "regtest.h"
+#include "recmutex.h"
+
+#define mainSEM_TEST_PRIORITY				( tskIDLE_PRIORITY + 1UL )
+#define mainCHECK_TASK_PRIORITY				( configMAX_PRIORITIES - 1 )
+
+/* The period between executions of the check task. */
+#define mainCHECK_PERIOD				( ( TickType_t ) 3000 / portTICK_PERIOD_MS  )
+
+/* LED that is toggled by the check task.  The check task periodically checks
+that all the other tasks are operating without error.  If no errors are found
+the LED is toggled.  If an error is found at any time the LED is never toggles
+again. */
+#define mainCHECK_TASK_LED				( 6 )
+
+/*
+ * The check task, as described at the top of this file.
+ */
+static void prvCheckTask( void *pvParameters );
+
+void main_full( void )
+{
+	vStartSemaphoreTasks(mainSEM_TEST_PRIORITY);
+	vStartTaskNotifyTask();
+	vStartRegTestTasks();
+	vStartRecursiveMutexTasks();
+
+	/* Create the task that performs the 'check' functionality,	as described at
+	the top of this file. */
+	xTaskCreate( prvCheckTask, "Check", configMINIMAL_STACK_SIZE, NULL, mainCHECK_TASK_PRIORITY, NULL );
+
+	vTaskStartScheduler();
+	
+	/* If all is well, the scheduler will now be running, and the following
+	line will never be reached.  If the following line does execute, then
+	there was either insufficient FreeRTOS heap memory available for the idle
+	and/or timer tasks to be created, or vTaskStartScheduler() was called from
+	User mode.  See the memory management section on the FreeRTOS web site for
+	more details on the FreeRTOS heap http://www.freertos.org/a00111.html.  The
+	mode from which main() is called is set in the C start up code and must be
+	a privileged mode (not user mode). */
+	for( ;; );
+}
+
+void init_full( void )
+{
+	vParTestInitialise();
+}
+
+static void prvCheckTask( void *pvParameters )
+{
+TickType_t xLastExecutionTime;
+unsigned long ulErrorFound = pdFALSE;
+
+	/* Just to stop compiler warnings. */
+	( void ) pvParameters;
+
+	/* Initialise xLastExecutionTime so the first call to vTaskDelayUntil()
+	works correctly. */
+	xLastExecutionTime = xTaskGetTickCount();
+
+	/* Cycle for ever, delaying then checking all the other tasks are still
+	operating without error.  The onboard LED is toggled on each iteration 
+	unless an error occurred. */
+	for( ;; )
+	{
+		/* Delay until it is time to execute again. */
+		vTaskDelayUntil( &xLastExecutionTime, mainCHECK_PERIOD );
+
+		/* Check all the demo tasks (other than the flash tasks) to ensure
+		that they are all still running, and that none have detected an error. */
+		if( xAreSemaphoreTasksStillRunning() != pdTRUE )
+		{
+			ulErrorFound |= 1UL << 0UL;
+		}
+				
+		if( xAreTaskNotificationTasksStillRunning() != pdTRUE )
+		{
+			ulErrorFound |= 1UL << 1UL;
+		}
+		
+		if( xAreRegTestTasksStillRunning() != pdTRUE )
+		{
+			ulErrorFound |= 1UL << 2UL;
+		}
+		
+		if ( xAreRecursiveMutexTasksStillRunning() != pdTRUE )
+		{
+			ulErrorFound |= 1UL << 3UL;
+		}
+		
+		if( ulErrorFound == pdFALSE )
+		{
+			/* Toggle the LED if everything is okay so we know if an error occurs even if not
+			using console IO. */
+			vParTestToggleLED( mainCHECK_TASK_LED );
+		}
+	}
+}
--- a/FreeRTOS/Demo/AVR_Dx_Atmel_Studio/RTOSDemo/main_minimal.c
+++ b/FreeRTOS/Demo/AVR_Dx_Atmel_Studio/RTOSDemo/main_minimal.c
@ -0,0 +1,167 @@
+/*
+ * main_minimal.c
+ *
+ * Created: 5/22/2020 2:35:21 PM
+ *  Author: M17336
+ */ 
+
+#include <avr/eeprom.h>
+
+#include "FreeRTOS.h"
+#include "task.h"
+#include "croutine.h"
+#include "PollQ.h"
+#include "integer.h"
+#include "serial.h"
+#include "comtest.h"
+#include "crflash.h"
+#include "partest.h"
+#include "regtest.h"
+
+/* Priority definitions for most of the tasks in the demo application.  Some
+tasks just use the idle priority. */
+#define mainCOM_TEST_PRIORITY			( tskIDLE_PRIORITY + 2 )
+#define mainQUEUE_POLL_PRIORITY			( tskIDLE_PRIORITY + 2 )
+#define mainCHECK_TASK_PRIORITY			( tskIDLE_PRIORITY + 3 )
+
+/* Baud rate used by the serial port tasks. */
+#define mainCOM_TEST_BAUD_RATE			( ( unsigned long ) 9600 )
+
+/* LED used by the serial port tasks.  This is toggled on each character Tx,
+and mainCOM_TEST_LED + 1 is toggles on each character Rx. */
+#define mainCOM_TEST_LED				( 7 )
+
+/* LED that is toggled by the check task.  The check task periodically checks
+that all the other tasks are operating without error.  If no errors are found
+the LED is toggled.  If an error is found at any time the LED is never toggles
+again. */
+#define mainCHECK_TASK_LED				( 6 )
+
+/* The period between executions of the check task. */
+#define mainCHECK_PERIOD				( ( TickType_t ) 3000 / portTICK_PERIOD_MS  )
+
+/* An address in the EEPROM used to count resets.  This is used to check that
+the demo application is not unexpectedly resetting. */
+#define mainRESET_COUNT_ADDRESS			( 0x1400 )
+
+/* The number of coroutines to create. */
+#define mainNUM_FLASH_COROUTINES        ( 3 )
+
+/*
+ * The task function for the "Check" task.
+ */
+static void vErrorChecks( void *pvParameters );
+
+/*
+ * Checks the unique counts of other tasks to ensure they are still operational.
+ * Flashes an LED if everything is okay.
+ */
+static void prvCheckOtherTasksAreStillRunning( void );
+
+/*
+ * Called on boot to increment a count stored in the EEPROM.  This is used to
+ * ensure the CPU does not reset unexpectedly.
+ */
+static void prvIncrementResetCount( void );
+
+void main_minimal( void )
+{
+	prvIncrementResetCount();
+
+	/* Create the standard demo tasks. */
+	vStartIntegerMathTasks( tskIDLE_PRIORITY );
+	vAltStartComTestTasks( mainCOM_TEST_PRIORITY, mainCOM_TEST_BAUD_RATE, mainCOM_TEST_LED );
+	vStartPolledQueueTasks( mainQUEUE_POLL_PRIORITY );
+	vStartRegTestTasks();
+	
+	/* Create the tasks defined within this file. */
+	xTaskCreate( vErrorChecks, "Check", configMINIMAL_STACK_SIZE, NULL, mainCHECK_TASK_PRIORITY, NULL );
+
+	/* Create the co-routines that flash the LED's. */
+	vStartFlashCoRoutines( mainNUM_FLASH_COROUTINES );
+	
+	/* In this port, to use preemptive scheduler define configUSE_PREEMPTION
+	as 1 in portmacro.h.  To use the cooperative scheduler define
+	configUSE_PREEMPTION as 0. */
+	vTaskStartScheduler();	
+}
+
+void init_minimal( void )
+{
+	/* Configure UART pins: PC1 Rx, PC0 Tx */
+	PORTC.DIR &= ~PIN0_bm;
+	PORTC.DIR |= PIN1_bm;
+	
+	vParTestInitialise();
+}
+
+static void vErrorChecks( void *pvParameters )
+{
+static volatile unsigned long ulDummyVariable = 3UL;
+
+	/* The parameters are not used. */
+	( void ) pvParameters;
+
+	/* Cycle for ever, delaying then checking all the other tasks are still
+	operating without error. */
+	for( ;; )
+	{
+		vTaskDelay( mainCHECK_PERIOD );
+
+		/* Perform a bit of 32bit maths to ensure the registers used by the
+		integer tasks get some exercise. The result here is not important -
+		see the demo application documentation for more info. */
+		ulDummyVariable *= 3;
+		
+		prvCheckOtherTasksAreStillRunning();
+	}
+}
+/*-----------------------------------------------------------*/
+
+static void prvCheckOtherTasksAreStillRunning( void )
+{
+static portBASE_TYPE xErrorHasOccurred = pdFALSE;
+
+	if( xAreIntegerMathsTaskStillRunning() != pdTRUE )
+	{
+		xErrorHasOccurred = pdTRUE;
+	}
+
+	if( xAreComTestTasksStillRunning() != pdTRUE )
+	{
+		xErrorHasOccurred = pdTRUE;
+	}
+
+	if( xArePollingQueuesStillRunning() != pdTRUE )
+	{
+		xErrorHasOccurred = pdTRUE;
+	}
+
+	if( xAreRegTestTasksStillRunning() != pdTRUE )
+	{
+		xErrorHasOccurred = pdTRUE;
+	}
+	
+	if( xErrorHasOccurred == pdFALSE )
+	{
+		/* Toggle the LED if everything is okay so we know if an error occurs even if not
+		using console IO. */
+		vParTestToggleLED( mainCHECK_TASK_LED );
+	}
+}
+/*-----------------------------------------------------------*/
+
+static void prvIncrementResetCount( void )
+{
+unsigned char ucCount;
+
+	eeprom_read_block( &ucCount, ( void * ) mainRESET_COUNT_ADDRESS, sizeof( ucCount ) );
+	ucCount++;
+	eeprom_write_byte( ( void * ) mainRESET_COUNT_ADDRESS, ucCount );
+}
+/*-----------------------------------------------------------*/
+
+void vApplicationIdleHook( void )
+{
+	vCoRoutineSchedule();
+}
--- a/FreeRTOS/Demo/AVR_Dx_Atmel_Studio/RTOSDemo/regtest.c
+++ b/FreeRTOS/Demo/AVR_Dx_Atmel_Studio/RTOSDemo/regtest.c
@ -0,0 +1,365 @@
+/*
+ * FreeRTOS Kernel V10.3.0
+ * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+ * the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+ * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * http://www.FreeRTOS.org
+ * http://aws.amazon.com/freertos
+ *
+ * 1 tab == 4 spaces!
+ */
+
+/* Scheduler include files. */
+#include "FreeRTOS.h"
+#include "task.h"
+
+/* Demo file headers. */
+#include "regtest.h"
+#include "FreeRTOSConfig.h"
+
+/*
+ * Test tasks that sets registers to known values, then checks to ensure the
+ * values remain as expected.  Test 1 and test 2 use different values.
+ */
+static void prvRegisterCheck1( void *pvParameters );
+static void prvRegisterCheck2( void *pvParameters );
+
+/* Set to a non zero value should an error be found. */
+portBASE_TYPE xRegTestError = pdFALSE;
+
+/*-----------------------------------------------------------*/
+
+void vStartRegTestTasks( void )
+{
+	xTaskCreate( prvRegisterCheck1, "Reg1", configMINIMAL_STACK_SIZE, NULL, tskIDLE_PRIORITY, NULL );
+	xTaskCreate( prvRegisterCheck2, "Reg2", configMINIMAL_STACK_SIZE, NULL, tskIDLE_PRIORITY, NULL );		
+}
+/*-----------------------------------------------------------*/
+
+portBASE_TYPE xAreRegTestTasksStillRunning( void )
+{
+portBASE_TYPE xReturn;
+
+	/* If a register was found to contain an unexpected value then the
+	xRegTestError variable would have been set to a non zero value. */
+	if( xRegTestError == pdFALSE )
+	{
+		xReturn = pdTRUE;
+	}
+	else
+	{
+		xReturn = pdFALSE;
+	}
+	
+	return xReturn;
+}
+/*-----------------------------------------------------------*/
+
+static void prvRegisterCheck1( void *pvParameters )
+{
+	( void ) pvParameters;
+
+	for( ;; )
+	{
+		asm(	"LDI	r31,	5"		);		
+		asm( 	"MOV	r0,		r31"	);
+		asm(	"LDI	r31,	6"		);
+		asm( 	"MOV	r1,		r31"	);
+		asm(	"LDI	r31,	7"		);
+		asm( 	"MOV	r2,		r31"	);
+		asm(	"LDI	r31,	8"		);
+		asm( 	"MOV	r3,		r31"	);
+		asm(	"LDI	r31,	9"		);
+		asm( 	"MOV	r4,		r31"	);
+		asm(	"LDI	r31,	10"		);
+		asm( 	"MOV	r5,		r31"	);
+		asm(	"LDI	r31,	11"		);
+		asm( 	"MOV	r6,		r31"	);
+		asm(	"LDI	r31,	12"		);
+		asm( 	"MOV	r7,		r31"	);
+		asm(	"LDI	r31,	13"		);
+		asm( 	"MOV	r8,		r31"	);
+		asm(	"LDI	r31,	14"		);
+		asm( 	"MOV	r9,		r31"	);
+		asm(	"LDI	r31,	15"		);
+		asm( 	"MOV	r10,	r31"	);
+		asm(	"LDI	r31,	16"		);
+		asm( 	"MOV	r11,	r31"	);
+		asm(	"LDI	r31,	17"		);
+		asm( 	"MOV	r12,	r31"	);
+		asm(	"LDI	r31,	18"		);
+		asm( 	"MOV	r13,	r31"	);
+		asm(	"LDI	r31,	19"		);
+		asm( 	"MOV	r14,	r31"	);
+		asm(	"LDI	r31,	20"		);
+		asm( 	"MOV	r15,	r31"	);
+		asm(	"LDI	r16,	21"		);
+		asm(	"LDI	r17,	22"		);
+		asm(	"LDI	r18,	23"		);
+		asm(	"LDI	r19,	24"		);
+		asm(	"LDI	r20,	25"		);
+		asm(	"LDI	r21,	26"		);
+		asm(	"LDI	r22,	27"		);
+		asm(	"LDI	r23,	28"		);
+		asm(	"LDI	r24,	29"		);
+		asm(	"LDI	r25,	30"		);
+		asm(	"LDI	r26,	31"		);
+		asm(	"LDI	r27,	32"		);
+		asm(	"LDI	r30,	33"		);
+
+#if ( configUSE_PREEMPTION == 0 )
+		portYIELD();
+#endif
+
+		asm(	"LDI	r31,	5"			);
+		asm(	"CPSE	r31,	r0"			);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	6"			);
+		asm(	"CPSE	r31,	r1"			);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	7"			);
+		asm(	"CPSE	r31,	r2"			);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	8"			);
+		asm(	"CPSE	r31,	r3"			);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	9"			);
+		asm(	"CPSE	r31,	r4"			);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	10"			);
+		asm(	"CPSE	r31,	r5"			);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	11"			);
+		asm(	"CPSE	r31,	r6"			);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	12"			);
+		asm(	"CPSE	r31,	r7"			);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	13"			);
+		asm(	"CPSE	r31,	r8"			);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	14"			);
+		asm(	"CPSE	r31,	r9"			);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	15"			);
+		asm(	"CPSE	r31,	r10"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	16"			);
+		asm(	"CPSE	r31,	r11"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	17"			);
+		asm(	"CPSE	r31,	r12"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	18"			);
+		asm(	"CPSE	r31,	r13"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	19"			);
+		asm(	"CPSE	r31,	r14"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	20"			);
+		asm(	"CPSE	r31,	r15"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	21"			);
+		asm(	"CPSE	r31,	r16"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	22"			);
+		asm(	"CPSE	r31,	r17"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	23"			);
+		asm(	"CPSE	r31,	r18"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	24"			);
+		asm(	"CPSE	r31,	r19"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	25"			);
+		asm(	"CPSE	r31,	r20"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	26"			);
+		asm(	"CPSE	r31,	r21"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	27"			);
+		asm(	"CPSE	r31,	r22"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	28"			);
+		asm(	"CPSE	r31,	r23"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	29"			);
+		asm(	"CPSE	r31,	r24"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	30"			);
+		asm(	"CPSE	r31,	r25"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	31"			);
+		asm(	"CPSE	r31,	r26"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	32"			);
+		asm(	"CPSE	r31,	r27"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	33"			);
+		asm(	"CPSE	r31,	r30"		);
+		asm(	"STS	xRegTestError, r0"	);
+	}
+}
+/*-----------------------------------------------------------*/
+
+static void prvRegisterCheck2( void *pvParameters )
+{
+	( void ) pvParameters;
+
+	for( ;; )
+	{
+		asm(	"LDI	r31,	1"		);		
+		asm( 	"MOV	r0,		r31"	);
+		asm(	"LDI	r31,	2"		);
+		asm( 	"MOV	r1,		r31"	);
+		asm(	"LDI	r31,	3"		);
+		asm( 	"MOV	r2,		r31"	);
+		asm(	"LDI	r31,	4"		);
+		asm( 	"MOV	r3,		r31"	);
+		asm(	"LDI	r31,	5"		);
+		asm( 	"MOV	r4,		r31"	);
+		asm(	"LDI	r31,	6"		);
+		asm( 	"MOV	r5,		r31"	);
+		asm(	"LDI	r31,	7"		);
+		asm( 	"MOV	r6,		r31"	);
+		asm(	"LDI	r31,	8"		);
+		asm( 	"MOV	r7,		r31"	);
+		asm(	"LDI	r31,	9"		);
+		asm( 	"MOV	r8,		r31"	);
+		asm(	"LDI	r31,	10"		);
+		asm( 	"MOV	r9,		r31"	);
+		asm(	"LDI	r31,	11"		);
+		asm( 	"MOV	r10,	r31"	);
+		asm(	"LDI	r31,	12"		);
+		asm( 	"MOV	r11,	r31"	);
+		asm(	"LDI	r31,	13"		);
+		asm( 	"MOV	r12,	r31"	);
+		asm(	"LDI	r31,	14"		);
+		asm( 	"MOV	r13,	r31"	);
+		asm(	"LDI	r31,	15"		);
+		asm( 	"MOV	r14,	r31"	);
+		asm(	"LDI	r31,	16"		);
+		asm( 	"MOV	r15,	r31"	);
+		asm(	"LDI	r16,	17"		);
+		asm(	"LDI	r17,	18"		);
+		asm(	"LDI	r18,	19"		);
+		asm(	"LDI	r19,	20"		);
+		asm(	"LDI	r20,	21"		);
+		asm(	"LDI	r21,	22"		);
+		asm(	"LDI	r22,	23"		);
+		asm(	"LDI	r23,	24"		);
+		asm(	"LDI	r24,	25"		);
+		asm(	"LDI	r25,	26"		);
+		asm(	"LDI	r26,	27"		);
+		asm(	"LDI	r27,	28"		);
+		asm(	"LDI	r30,	29"		);
+
+#if ( configUSE_PREEMPTION == 0 )
+		portYIELD();
+#endif
+
+		asm(	"LDI	r31,	1"			);
+		asm(	"CPSE	r31,	r0"			);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	2"			);
+		asm(	"CPSE	r31,	r1"			);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	3"			);
+		asm(	"CPSE	r31,	r2"			);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	4"			);
+		asm(	"CPSE	r31,	r3"			);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	5"			);
+		asm(	"CPSE	r31,	r4"			);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	6"			);
+		asm(	"CPSE	r31,	r5"			);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	7"			);
+		asm(	"CPSE	r31,	r6"			);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	8"			);
+		asm(	"CPSE	r31,	r7"			);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	9"			);
+		asm(	"CPSE	r31,	r8"			);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	10"			);
+		asm(	"CPSE	r31,	r9"			);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	11"			);
+		asm(	"CPSE	r31,	r10"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	12"			);
+		asm(	"CPSE	r31,	r11"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	13"			);
+		asm(	"CPSE	r31,	r12"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	14"			);
+		asm(	"CPSE	r31,	r13"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	15"			);
+		asm(	"CPSE	r31,	r14"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	16"			);
+		asm(	"CPSE	r31,	r15"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	17"			);
+		asm(	"CPSE	r31,	r16"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	18"			);
+		asm(	"CPSE	r31,	r17"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	19"			);
+		asm(	"CPSE	r31,	r18"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	20"			);
+		asm(	"CPSE	r31,	r19"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	21"			);
+		asm(	"CPSE	r31,	r20"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	22"			);
+		asm(	"CPSE	r31,	r21"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	23"			);
+		asm(	"CPSE	r31,	r22"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	24"			);
+		asm(	"CPSE	r31,	r23"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	25"			);
+		asm(	"CPSE	r31,	r24"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	26"			);
+		asm(	"CPSE	r31,	r25"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	27"			);
+		asm(	"CPSE	r31,	r26"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	28"			);
+		asm(	"CPSE	r31,	r27"		);
+		asm(	"STS	xRegTestError, r0"	);
+		asm(	"LDI	r31,	29"			);
+		asm(	"CPSE	r31,	r30"		);
+		asm(	"STS	xRegTestError, r0"	);
+	}
+}
--- a/FreeRTOS/Demo/AVR_Dx_Atmel_Studio/RTOSDemo/regtest.h
+++ b/FreeRTOS/Demo/AVR_Dx_Atmel_Studio/RTOSDemo/regtest.h
@ -0,0 +1,34 @@
+/*
+ * FreeRTOS Kernel V10.3.0
+ * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+ * the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+ * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * http://www.FreeRTOS.org
+ * http://aws.amazon.com/freertos
+ *
+ * 1 tab == 4 spaces!
+ */
+
+#ifndef REG_TEST_H
+#define REG_TEST_H
+
+void vStartRegTestTasks( void );
+portBASE_TYPE xAreRegTestTasksStillRunning( void );
+
+#endif
--- a/FreeRTOS/Demo/AVR_Dx_Atmel_Studio/RTOSDemo/serial/serial.c
+++ b/FreeRTOS/Demo/AVR_Dx_Atmel_Studio/RTOSDemo/serial/serial.c
@ -0,0 +1,164 @@
+/*
+ * FreeRTOS Kernel V10.3.1
+ * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+ * the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+ * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * http://www.FreeRTOS.org
+ * http://aws.amazon.com/freertos
+ *
+ * 1 tab == 4 spaces!
+ */
+
+
+/* BASIC INTERRUPT DRIVEN SERIAL PORT DRIVER FOR IAR AVR PORT. */
+
+#include <stdlib.h>
+#include "FreeRTOS.h"
+#include "queue.h"
+#include "task.h"
+#include "serial.h"
+#include <avr/interrupt.h>
+
+#define USART_BAUD_RATE(BAUD_RATE) ((float)(configCPU_CLOCK_HZ * 64 / (16 * (float)BAUD_RATE)) + 0.5)
+ 
+static QueueHandle_t xRxedChars;
+static QueueHandle_t xCharsForTx;
+
+#define vInterruptOn() USART1.CTRLA |= (1 << USART_DREIE_bp)										
+
+#define vInterruptOff()	USART1.CTRLA &= ~(1 << USART_DREIE_bp)
+
+xComPortHandle xSerialPortInitMinimal( unsigned long ulWantedBaud, unsigned portBASE_TYPE uxQueueLength )
+{
+	portENTER_CRITICAL();
+	{
+		/* Create the queues used by the com test task. */
+		xRxedChars = xQueueCreate( uxQueueLength, ( unsigned portBASE_TYPE ) sizeof( signed char ) );
+		xCharsForTx = xQueueCreate( uxQueueLength, ( unsigned portBASE_TYPE ) sizeof( signed char ) );
+
+		USART1.BAUD = (uint16_t)USART_BAUD_RATE(ulWantedBaud); /* set baud rate register */
+
+		USART1.CTRLA = 0 << USART_ABEIE_bp    /* Auto-baud Error Interrupt Enable: disabled */
+						| 0 << USART_DREIE_bp  /* Data Register Empty Interrupt Enable: disabled */
+						| 1 << USART_LBME_bp   /* Loop-back Mode Enable: enabled */
+						| USART_RS485_OFF_gc   /* RS485 Mode disabled */
+						| 1 << USART_RXCIE_bp  /* Receive Complete Interrupt Enable: enabled */
+						| 0 << USART_RXSIE_bp  /* Receiver Start Frame Interrupt Enable: disabled */
+						| 0 << USART_TXCIE_bp; /* Transmit Complete Interrupt Enable: disabled */
+
+		USART1.CTRLB = 0 << USART_MPCM_bp       /* Multi-processor Communication Mode: disabled */
+						| 0 << USART_ODME_bp     /* Open Drain Mode Enable: disabled */
+						| 1 << USART_RXEN_bp     /* Reciever enable: enabled */
+						| USART_RXMODE_NORMAL_gc /* Normal mode */
+						| 0 << USART_SFDEN_bp    /* Start Frame Detection Enable */
+						| 1 << USART_TXEN_bp;    /* Transmitter Enable: enabled */
+		
+	}
+	
+	portEXIT_CRITICAL();
+	
+	/* Unlike other ports, this serial code does not allow for more than one
+	com port.  We therefore don't return a pointer to a port structure and can
+	instead just return NULL. */
+	return NULL;
+}
+/*-----------------------------------------------------------*/
+
+signed portBASE_TYPE xSerialGetChar( xComPortHandle pxPort, signed char *pcRxedChar, TickType_t xBlockTime )
+{
+	/* Get the next character from the buffer.  Return false if no characters
+	are available, or arrive before xBlockTime expires. */
+	if( xQueueReceive( xRxedChars, pcRxedChar, xBlockTime ) )
+	{
+		return pdTRUE;
+	}
+	else
+	{
+		return pdFALSE;
+	}
+}
+/*-----------------------------------------------------------*/
+
+signed portBASE_TYPE xSerialPutChar( xComPortHandle pxPort, signed char cOutChar, TickType_t xBlockTime )
+{
+	/* Return false if after the block time there is no room on the Tx queue. */
+	if( xQueueSend( xCharsForTx, &cOutChar, xBlockTime ) != pdPASS )
+	{
+		return pdFAIL;
+	}
+	
+	vInterruptOn();
+	
+	return pdPASS;
+}
+/*-----------------------------------------------------------*/
+
+void vSerialClose( xComPortHandle xPort )
+{
+unsigned char ucByte;
+
+	/* Turn off the interrupts.  We may also want to delete the queues and/or
+	re-install the original ISR. */
+
+	portENTER_CRITICAL();
+	{
+		vInterruptOff();
+		
+		ucByte = USART1.CTRLB ;									
+		ucByte &= (0xFF ^(1 << USART_RXEN_bp));					
+		USART1.CTRLB = ucByte ;	
+		
+	}
+	portEXIT_CRITICAL();
+}
+/*-----------------------------------------------------------*/
+
+ISR(USART1_RXC_vect)
+{
+signed char ucChar, xHigherPriorityTaskWoken = pdFALSE;
+
+	/* Get the character and post it on the queue of Rxed characters.
+	If the post causes a task to wake force a context switch as the woken task
+	may have a higher priority than the task we have interrupted. */
+	ucChar = USART1.RXDATAL;
+
+	xQueueSendFromISR( xRxedChars, &ucChar, &xHigherPriorityTaskWoken );
+
+	if( xHigherPriorityTaskWoken != pdFALSE )
+	{
+		portYIELD_FROM_ISR();
+	}
+		
+}
+
+ISR(USART1_DRE_vect)
+{
+signed char cChar, cTaskWoken = pdFALSE;
+
+	if( xQueueReceiveFromISR( xCharsForTx, &cChar, &cTaskWoken ) == pdTRUE )
+	{
+		/* Send the next character queued for Tx. */
+		USART1.TXDATAL = cChar;
+	}
+	else
+	{
+		/* Queue empty, nothing to send. */
+		vInterruptOff();
+	}
+}
--- a/FreeRTOS/Demo/AVR_Dx_Atmel_Studio/readme.md
+++ b/FreeRTOS/Demo/AVR_Dx_Atmel_Studio/readme.md
@ -0,0 +1,58 @@
+
+# Overview
+
+This directory contains a Atmel Studio demo project for AVR128DA48 Curiosity Nano board (GCC compiler) equipped with AVR128DA48 microcontroller (128 KB Flash, 16 KB SRAM, 512 bytes EEPROM).  
+
+The project comes as three different demos, selectable by a define in the main.c file. Each demo has its own main-***demo_name***.c file
+
+### Blinky Demo
+
+**#define       mainSELECTED_APPLICATION	  0**
+
+Blinky demos are intended for beginners. They normally create just two [tasks](https://www.freertos.org/a00015.html) that communicates with each other through a [queue](https://www.freertos.org/Embedded-RTOS-Queues.html). Their functionality is contained in a single C source file called **main_blinky.c**.
+
+One of the tasks repeatedly sends a predefined value to the queue with 200 ms intervals, while the other task waits for messages to be available in the queue. Once a new message is available, it toggles on board LED if the value matches the expected value.
+
+
+### Minimal Demo
+
+**#define       mainSELECTED_APPLICATION	  1**
+
+This demo includes a higher number of tasks than the **Blinky demo**, but the complexity is still fairly low. Whole functionality is included in the **main_minimal.c** file by using the following tasks:
+
+ - integer math task (**Integer.c**)
+ - register tasks to verify the context switch (**regtest.c**)
+ - polled queue tasks (**PollQ.c**)
+ - serial communiation tasks (**Serial.c**)
+ - check task hat periodically checks the other tasks are operating without error.
+
+This demo uses the **check** task to periodically inspect the standard demo tasks in order to ensure all the tasks are functioning as expected. The check task also toggles an LED to give a visual feedback of the system status. If the LED is toggling every 3 seconds, then the check task has not discovered any problems. If the LED is stop toggling, then the check task has discovered a problem in one or more tasks.
+
+### Full Demo
+
+**#define       mainSELECTED_APPLICATION	  2**
+
+This demo is a comprehensive demonstration and test of a lot of FreeRTOS features, including direct task to task notifications, queues, semaphores, recursive semaphores, software timers, and more. The following tasks are created in **main_full.c** file:
+
+ - register tasks to verify the context switch (**Regtest.c**)
+ - semaphores task (**Semtest.c**)
+ - direct task to task notification task (**TaskNotify.c**)
+ - recursive semaphores task (**Regmutex.c**)
+ - check task hat periodically checks the other tasks are operating without error
+
+The demo uses the **check** task to periodically inspect the standard demo tasks in order to ensure all the tasks are functioning as expected. The check task also toggles an LED to give a visual feedback of the system status. If the LED is toggling every 3 seconds, then the check task has not discovered any problems. If the LED is stop toggling, then the check task has discovered a problem in one or more tasks.
+
+# Quick start
+
+To run this demo on AVR128DA48 Curiosity Nano platform, the following steps are required:
+ - install **Atmel Studio IDE**
+ - open **RTOSDemo.atsln** project file from current folder
+ - select desired demo using **#define       mainSELECTED_APPLICATION** as explained in the previous section
+ - build and debug the project
+
+
+# References
+  - [AVR128DA48 Curiosity Nano platform](https://www.microchip.com/DevelopmentTools/ProductDetails/PartNO/DM164151)
+  - [Atmel Studio IDE](http://studio.download.atmel.com/7.0.2389/as-installer-7.0.2389-web.exe)
+  - [AVR128DA28](https://www.microchip.com/wwwproducts/en/AVR128DA28), [AVR128DA32](https://www.microchip.com/wwwproducts/en/AVR128DA32), [AVR128DA48](https://www.microchip.com/wwwproducts/en/AVR128DA48), [AVR128DA64](https://www.microchip.com/wwwproducts/en/AVR128DA64) devices page
+  - [AVR128DB28](https://www.microchip.com/wwwproducts/en/AVR128DB28), [AVR128DB32](https://www.microchip.com/wwwproducts/en/AVR128DB32), [AVR128DB48](https://www.microchip.com/wwwproducts/en/AVR128DB48), [AVR128DB64](https://www.microchip.com/wwwproducts/en/AVR128DB64) devices page
--- a/FreeRTOS/Demo/Common/Full/semtest.c
+++ b/FreeRTOS/Demo/Common/Full/semtest.c
@ -264,7 +264,7 @@ short sError = pdFALSE, sCheckVariableToUse;
 /*-----------------------------------------------------------*/

 /* This is called to check that all the created tasks are still running. */
-portBASE_TYPE xAreSemaphoreTasksStillRunning( void )
+BaseType_t xAreSemaphoreTasksStillRunning( void )
 {
 static short sLastCheckVariables[ semtstNUM_TASKS ] = { 0 };
 portBASE_TYPE xTask, xReturn = pdTRUE;
--- a/FreeRTOS/Demo/Common/Minimal/recmutex.c
+++ b/FreeRTOS/Demo/Common/Minimal/recmutex.c
@ -257,7 +257,7 @@ static void prvRecursiveMutexBlockingTask( void *pvParameters )
 		}

 		/* The controlling and blocking tasks should be in lock step. */
-		if( uxControllingCycles != ( uxBlockingCycles + 1 ) )
+		if( uxControllingCycles != (UBaseType_t) ( uxBlockingCycles + 1 ) )
 		{
 			xErrorOccurred = pdTRUE;
 		}