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204 lines
6.9 KiB
C
204 lines
6.9 KiB
C
/*
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* FreeRTOS Kernel V10.2.1
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* Copyright (C) 2019 Amazon.com, Inc. or its affiliates. All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy of
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* this software and associated documentation files (the "Software"), to deal in
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* the Software without restriction, including without limitation the rights to
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* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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* the Software, and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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* http://www.FreeRTOS.org
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* http://aws.amazon.com/freertos
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*
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* 1 tab == 4 spaces!
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*/
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/*
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* This is a very simple demo that creates two tasks and one queue. One task
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* (the queue receive task) blocks on the queue to wait for data to arrive,
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* toggling an LED each time '100' is received. The other task (the queue send
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* task) repeatedly blocks for a fixed period before sending '100' to the queue
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* (causing the first task to toggle the LED).
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*
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* For a much more complete and complex example select either the Debug or
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* Debug_with_optimisation build configurations within the HEW IDE.
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*/
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/* Hardware specific includes. */
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#include "iodefine.h"
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/* Kernel includes. */
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#include "FreeRTOS.h"
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#include "task.h"
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#include "queue.h"
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/* Demo includes. */
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#include "ParTest.h"
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/* Priorities at which the tasks are created. */
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#define configQUEUE_RECEIVE_TASK_PRIORITY ( tskIDLE_PRIORITY + 2 )
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#define configQUEUE_SEND_TASK_PRIORITY ( tskIDLE_PRIORITY + 1 )
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/* The rate at which data is sent to the queue, specified in milliseconds. */
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#define mainQUEUE_SEND_FREQUENCY_MS ( 500 / portTICK_PERIOD_MS )
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/* The number of items the queue can hold. This is 1 as the receive task
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will remove items as they are added so the send task should always find the
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queue empty. */
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#define mainQUEUE_LENGTH ( 1 )
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/*
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* The tasks as defined at the top of this file.
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*/
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static void prvQueueReceiveTask( void *pvParameters );
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static void prvQueueSendTask( void *pvParameters );
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/* The queue used by both tasks. */
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static QueueHandle_t xQueue = NULL;
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/*-----------------------------------------------------------*/
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int main(void)
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{
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extern void HardwareSetup( void );
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/* Renesas provided CPU configuration routine. The clocks are configured in
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here. */
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HardwareSetup();
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/* Turn all LEDs off. */
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vParTestInitialise();
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/* Create the queue. */
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xQueue = xQueueCreate( mainQUEUE_LENGTH, sizeof( unsigned long ) );
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if( xQueue != NULL )
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{
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/* Start the two tasks as described at the top of this file. */
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xTaskCreate( prvQueueReceiveTask, "Rx", configMINIMAL_STACK_SIZE, NULL, configQUEUE_RECEIVE_TASK_PRIORITY, NULL );
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xTaskCreate( prvQueueSendTask, "TX", configMINIMAL_STACK_SIZE, NULL, configQUEUE_SEND_TASK_PRIORITY, NULL );
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/* Start the tasks running. */
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vTaskStartScheduler();
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}
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/* If all is well we will never reach here as the scheduler will now be
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running. If we do reach here then it is likely that there was insufficient
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heap available for the idle task to be created. */
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for( ;; );
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}
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/*-----------------------------------------------------------*/
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static void prvQueueSendTask( void *pvParameters )
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{
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TickType_t xNextWakeTime;
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const unsigned long ulValueToSend = 100UL;
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/* Initialise xNextWakeTime - this only needs to be done once. */
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xNextWakeTime = xTaskGetTickCount();
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for( ;; )
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{
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/* Place this task in the blocked state until it is time to run again.
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The block state is specified in ticks, the constant used converts ticks
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to ms. */
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vTaskDelayUntil( &xNextWakeTime, mainQUEUE_SEND_FREQUENCY_MS );
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/* Send to the queue - causing the queue receive task to flash its LED. 0
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is used so the send does not block - it shouldn't need to as the queue
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should always be empty here. */
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xQueueSend( xQueue, &ulValueToSend, 0 );
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}
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}
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/*-----------------------------------------------------------*/
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static void prvQueueReceiveTask( void *pvParameters )
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{
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unsigned long ulReceivedValue;
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for( ;; )
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{
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/* Wait until something arives in the queue - this will block
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indefinitely provided INCLUDE_vTaskSuspend is set to 1 in
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FreeRTOSConfig.h. */
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xQueueReceive( xQueue, &ulReceivedValue, portMAX_DELAY );
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/* To get here something must have arrived, but is it the expected
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value? If it is, toggle the LED. */
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if( ulReceivedValue == 100UL )
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{
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vParTestToggleLED( 0 );
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}
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}
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}
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/*-----------------------------------------------------------*/
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void vApplicationSetupTimerInterrupt( void )
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{
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/* Enable compare match timer 0. */
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MSTP( CMT0 ) = 0;
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/* Interrupt on compare match. */
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CMT0.CMCR.BIT.CMIE = 1;
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/* Set the compare match value. */
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CMT0.CMCOR = ( unsigned short ) ( ( ( configPERIPHERAL_CLOCK_HZ / configTICK_RATE_HZ ) -1 ) / 8 );
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/* Divide the PCLK by 8. */
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CMT0.CMCR.BIT.CKS = 0;
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/* Enable the interrupt... */
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_IEN( _CMT0_CMI0 ) = 1;
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/* ...and set its priority to the application defined kernel priority. */
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_IPR( _CMT0_CMI0 ) = configKERNEL_INTERRUPT_PRIORITY;
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/* Start the timer. */
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CMT.CMSTR0.BIT.STR0 = 1;
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}
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/*-----------------------------------------------------------*/
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/* This function is explained by the comments above its prototype at the top
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of this file. */
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void vApplicationMallocFailedHook( void )
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{
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for( ;; );
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}
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/*-----------------------------------------------------------*/
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/* This function is explained by the comments above its prototype at the top
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of this file. */
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void vApplicationStackOverflowHook( TaskHandle_t pxTask, char *pcTaskName )
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{
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for( ;; );
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}
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/*-----------------------------------------------------------*/
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/* This function is explained by the comments above its prototype at the top
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of this file. */
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void vApplicationIdleHook( void )
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{
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}
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/*-----------------------------------------------------------*/
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/* The following four functions are here just to allow all three build
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configurations to use the same vector table. They are not used in this
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demo, but linker errors will result if they are not defined. They can
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be ignored. */
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void vT0_1_ISR_Handler( void ) {}
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void vT2_3_ISR_Handler( void ) {}
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void vEMAC_ISR_Handler( void ) {}
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void vTimer2_ISR_Handler( void ) {}
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volatile unsigned long ulHighFrequencyTickCount = 0; |