Removed outdated AVR32 demo.
Richard Barry
15 years ago
parent
61dc1e332a
commit
d09fcd3abe
@ -1,117 +0,0 @@
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/*This file has been prepared for Doxygen automatic documentation generation.*/
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/*! \file *********************************************************************
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*
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* \brief FreeRTOS LEDs Management for AVR32 UC3.
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*
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* - Compiler: IAR EWAVR32 and GNU GCC for AVR32
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* - Supported devices: All AVR32 devices can be used.
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* - AppNote:
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*
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* \author Atmel Corporation: http://www.atmel.com \n
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* Support and FAQ: http://support.atmel.no/
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*
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*****************************************************************************/
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/* Copyright (c) 2007, Atmel Corporation All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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||||
*
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||||
* 1. Redistributions of source code must retain the above copyright notice,
|
||||
* this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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||||
* this list of conditions and the following disclaimer in the documentation
|
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* and/or other materials provided with the distribution.
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*
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* 3. The name of ATMEL may not be used to endorse or promote products derived
|
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY ATMEL ``AS IS'' AND ANY EXPRESS OR IMPLIED
|
||||
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
||||
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY AND
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* SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <avr32/io.h>
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#include "FreeRTOS.h"
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#include "task.h"
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#include "partest.h"
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/*-----------------------------------------------------------
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* Simple parallel port IO routines.
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*-----------------------------------------------------------*/
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#define partstALL_OUTPUTS_OFF ( ( unsigned portCHAR ) 0x00 )
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#if( BOARD==EVK1100 )
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# define partstMAX_OUTPUT_LED ( ( unsigned portCHAR ) 8 )
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#elif( BOARD==EVK1101 )
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# define partstMAX_OUTPUT_LED ( ( unsigned portCHAR ) 4 )
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#endif
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static volatile unsigned portCHAR ucCurrentOutputValue = partstALL_OUTPUTS_OFF; /*lint !e956 File scope parameters okay here. */
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/*-----------------------------------------------------------*/
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void vParTestInitialise( void )
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{
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LED_Display( partstALL_OUTPUTS_OFF ); /* Start with all LEDs off. */
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}
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/*-----------------------------------------------------------*/
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void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )
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{
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unsigned portCHAR ucBit;
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if( uxLED >= partstMAX_OUTPUT_LED )
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{
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return;
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}
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ucBit = ( ( unsigned portCHAR ) 1 ) << uxLED;
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vTaskSuspendAll();
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{
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if( xValue == pdTRUE )
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{
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ucCurrentOutputValue |= ucBit;
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}
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else
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{
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ucCurrentOutputValue &= ~ucBit;
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}
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LED_Display(ucCurrentOutputValue);
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}
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xTaskResumeAll();
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}
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/*-----------------------------------------------------------*/
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void vParTestToggleLED( unsigned portBASE_TYPE uxLED )
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{
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unsigned portCHAR ucBit;
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if( uxLED >= partstMAX_OUTPUT_LED )
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{
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return;
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}
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ucBit = ( ( unsigned portCHAR ) 1 ) << uxLED;
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vTaskSuspendAll();
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{
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ucCurrentOutputValue ^= ucBit;
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LED_Display(ucCurrentOutputValue);
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}
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xTaskResumeAll();
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}
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@ -1,72 +0,0 @@
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/*This file is prepared for Doxygen automatic documentation generation.*/
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/*! \file *********************************************************************
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*
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* \brief AVR32 UC3 ISP trampoline.
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*
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* In order to be able to program a project with both BatchISP and JTAGICE mkII
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* without having to take the general-purpose fuses into consideration, add this
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* file to the project and change the program entry point to _trampoline.
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*
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* The pre-programmed ISP will be erased if JTAGICE mkII is used.
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*
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* - Compiler: GNU GCC for AVR32
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* - Supported devices: All AVR32UC devices can be used.
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*
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* \author Atmel Corporation: http://www.atmel.com \n
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* Support and FAQ: http://support.atmel.no/
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*
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******************************************************************************/
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/* Copyright (c) 2007, Atmel Corporation All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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||||
* 1. Redistributions of source code must retain the above copyright notice,
|
||||
* this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
|
||||
* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3. The name of ATMEL may not be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY ATMEL ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
||||
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY AND
|
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* SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "../conf_isp.h"
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//! @{
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//! \verbatim
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// This must be linked @ 0x80000000 if it is to be run upon reset.
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.section .reset, "ax", @progbits
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.global _trampoline
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.type _trampoline, @function
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_trampoline:
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// Jump to program start.
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rjmp program_start
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.org PROGRAM_START_OFFSET
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program_start:
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// Jump to the C runtime startup routine.
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lda.w pc, _stext
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//! \endverbatim
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//! @}
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@ -1,91 +0,0 @@
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/*This file is prepared for Doxygen automatic documentation generation.*/
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/*! \file *********************************************************************
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*
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* \brief AVR32 UC3 ISP trampoline.
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*
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* In order to be able to program a project with both BatchISP and JTAGICE mkII
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* without having to take the general-purpose fuses into consideration, add this
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* file to the project and change the program entry point to __trampoline.
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*
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* The pre-programmed ISP will be erased if JTAGICE mkII is used.
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*
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* - Compiler: IAR EWAVR32
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* - Supported devices: All AVR32UC devices can be used.
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*
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* \author Atmel Corporation: http://www.atmel.com \n
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* Support and FAQ: http://support.atmel.no/
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*
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******************************************************************************/
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/* Copyright (c) 2007, Atmel Corporation All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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||||
*
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* 1. Redistributions of source code must retain the above copyright notice,
|
||||
* this list of conditions and the following disclaimer.
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||||
*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
|
||||
* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3. The name of ATMEL may not be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY ATMEL ``AS IS'' AND ANY EXPRESS OR IMPLIED
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||||
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
||||
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY AND
|
||||
* SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "../conf_isp.h"
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//! @{
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//! \verbatim
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RSEG SSTACK:DATA:NOROOT(2)
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// This must be linked @ 0x80000000 if it is to be run upon reset.
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RSEG RESET:CODE:NOROOT(1)
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PUBLIC __trampoline
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__trampoline:
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// Jump to program start.
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rjmp program_start
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ORG PROGRAM_START_OFFSET
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program_start:
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// Initialize the stack pointer.
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lddpc sp, ??SPS
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// Jump to the C runtime startup routine.
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lddpc pc, ??cmain
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// Constant data area.
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ALIGN 2
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??SPS:
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DC32 SFE(SSTACK) & ~3
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EXTERN ?main
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??cmain:
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DC32 ?main
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END
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//! \endverbatim
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//! @}
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@ -1,119 +0,0 @@
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/*This file is prepared for Doxygen automatic documentation generation.*/
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/*! \file ******************************************************************
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*
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* \brief ISP configuration file.
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*
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* This file contains the possible external configuration of the ISP.
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*
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* - Compiler: IAR EWAVR32 and GNU GCC for AVR32
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* - Supported devices: All AVR32 devices with a USB module can be used.
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* - AppNote:
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*
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* \author Atmel Corporation: http://www.atmel.com \n
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* Support and FAQ: http://support.atmel.no/
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*
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***************************************************************************/
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/* Copyright (c) 2007, Atmel Corporation All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
|
||||
*
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||||
* 1. Redistributions of source code must retain the above copyright notice,
|
||||
* this list of conditions and the following disclaimer.
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||||
*
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||||
* 2. Redistributions in binary form must reproduce the above copyright notice,
|
||||
* this list of conditions and the following disclaimer in the documentation
|
||||
* and/or other materials provided with the distribution.
|
||||
*
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* 3. The name of ATMEL may not be used to endorse or promote products derived
|
||||
* from this software without specific prior written permission.
|
||||
*
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||||
* THIS SOFTWARE IS PROVIDED BY ATMEL ``AS IS'' AND ANY EXPRESS OR IMPLIED
|
||||
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
||||
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY AND
|
||||
* SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT,
|
||||
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
||||
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
|
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _CONF_ISP_H_
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#define _CONF_ISP_H_
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#include <avr32/io.h>
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#include "compiler.h"
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//_____ D E F I N I T I O N S ______________________________________________
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#define PRODUCT_MANUFACTURER_ID 0x58
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#define PRODUCT_FAMILY_ID 0x20
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#define ISP_VERSION 0x00
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#define ISP_ID0 0x00
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#define ISP_ID1 0x00
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#define ISP_GPFB_FORCE 31
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#define ISP_GPFB_FORCE_MASK 0x80000000
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#define ISP_GPFB_FORCE_OFFSET 31
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#define ISP_GPFB_FORCE_SIZE 1
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#define ISP_GPFB_IO_COND_EN 30
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#define ISP_GPFB_IO_COND_EN_MASK 0x40000000
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#define ISP_GPFB_IO_COND_EN_OFFSET 30
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#define ISP_GPFB_IO_COND_EN_SIZE 1
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#define ISP_GPFB_BOD_EN 29
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#define ISP_GPFB_BOD_EN_MASK 0x20000000
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#define ISP_GPFB_BOD_EN_OFFSET 29
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#define ISP_GPFB_BOD_EN_SIZE 1
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#define ISP_CFG (*(volatile U32 *)ISP_CFG_ADDRESS)
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#define ISP_CFG_ADDRESS (AVR32_FLASHC_USER_PAGE_ADDRESS + ISP_CFG_OFFSET)
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#define ISP_CFG_OFFSET 0x000001FC
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#define ISP_CFG_SIZE 4
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#define ISP_CFG_BOOT_KEY 17
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#define ISP_CFG_BOOT_KEY_MASK 0xFFFE0000
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#define ISP_CFG_BOOT_KEY_OFFSET 17
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#define ISP_CFG_BOOT_KEY_SIZE 15
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#define ISP_CFG_BOOT_KEY_VALUE 0x494F
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#define ISP_CFG_IO_COND_LEVEL 16
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#define ISP_CFG_IO_COND_LEVEL_MASK 0x00010000
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#define ISP_CFG_IO_COND_LEVEL_OFFSET 16
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#define ISP_CFG_IO_COND_LEVEL_SIZE 1
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#define ISP_CFG_IO_COND_PIN 8
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#define ISP_CFG_IO_COND_PIN_MASK 0x0000FF00
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#define ISP_CFG_IO_COND_PIN_OFFSET 8
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#define ISP_CFG_IO_COND_PIN_SIZE 8
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#define ISP_CFG_CRC8 0
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#define ISP_CFG_CRC8_MASK 0x000000FF
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#define ISP_CFG_CRC8_OFFSET 0
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#define ISP_CFG_CRC8_SIZE 8
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#define ISP_CFG_CRC8_POLYNOMIAL 0x107
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#define ISP_KEY (*(volatile U32 *)ISP_KEY_ADDRESS)
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#define ISP_KEY_ADDRESS (AVR32_SRAM_ADDRESS + ISP_KEY_OFFSET)
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#define ISP_KEY_OFFSET 0x00000000
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#define ISP_KEY_SIZE 4
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#define ISP_KEY_VALUE ('I' << 24 | 'S' << 16 | 'P' << 8 | 'K')
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#ifndef ISP_OSC
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#define ISP_OSC 0
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#endif
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#define DFU_FRAME_LENGTH 2048
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#define PROGRAM_START_ADDRESS (AVR32_FLASH_ADDRESS + PROGRAM_START_OFFSET)
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#define PROGRAM_START_OFFSET 0x00002000
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#endif // _CONF_ISP_H_
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@ -1,373 +0,0 @@
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/*This file has been prepared for Doxygen automatic documentation generation.*/
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/*! \file *********************************************************************
|
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*
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* \brief FreeRTOS Serial Port management example for AVR32 UC3.
|
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*
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* - Compiler: IAR EWAVR32 and GNU GCC for AVR32
|
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* - Supported devices: All AVR32 devices can be used.
|
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* - AppNote:
|
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*
|
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* \author Atmel Corporation: http://www.atmel.com \n
|
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* Support and FAQ: http://support.atmel.no/
|
||||
*
|
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*****************************************************************************/
|
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|
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/* Copyright (c) 2007, Atmel Corporation All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions are met:
|
||||
*
|
||||
* 1. Redistributions of source code must retain the above copyright notice,
|
||||
* this list of conditions and the following disclaimer.
|
||||
*
|
||||
* 2. Redistributions in binary form must reproduce the above copyright notice,
|
||||
* this list of conditions and the following disclaimer in the documentation
|
||||
* and/or other materials provided with the distribution.
|
||||
*
|
||||
* 3. The name of ATMEL may not be used to endorse or promote products derived
|
||||
* from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY ATMEL ``AS IS'' AND ANY EXPRESS OR IMPLIED
|
||||
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
||||
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY AND
|
||||
* SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT,
|
||||
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
||||
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
||||
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
|
||||
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
||||
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*/
|
||||
|
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|
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/*
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BASIC INTERRUPT DRIVEN SERIAL PORT DRIVER FOR USART.
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*/
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/* Scheduler includes. */
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#include "FreeRTOS.h"
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#include "queue.h"
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#include "task.h"
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/* Demo application includes. */
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#include "serial.h"
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#include <avr32/io.h>
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#include "board.h"
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#include "gpio.h"
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/*-----------------------------------------------------------*/
|
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|
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/* Constants to setup and access the USART. */
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#define serINVALID_COMPORT_HANDLER ( ( xComPortHandle ) 0 )
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#define serINVALID_QUEUE ( ( xQueueHandle ) 0 )
|
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#define serHANDLE ( ( xComPortHandle ) 1 )
|
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#define serNO_BLOCK ( ( portTickType ) 0 )
|
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|
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/*-----------------------------------------------------------*/
|
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|
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/* Queues used to hold received characters, and characters waiting to be
|
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transmitted. */
|
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static xQueueHandle xRxedChars;
|
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static xQueueHandle xCharsForTx;
|
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|
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/*-----------------------------------------------------------*/
|
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|
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/* Forward declaration. */
|
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static void vprvSerialCreateQueues( unsigned portBASE_TYPE uxQueueLength,
|
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xQueueHandle *pxRxedChars,
|
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xQueueHandle *pxCharsForTx );
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/*-----------------------------------------------------------*/
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#if __GNUC__
|
||||
__attribute__((__noinline__))
|
||||
#elif __ICCAVR32__
|
||||
#pragma optimize = no_inline
|
||||
#endif
|
||||
|
||||
static portBASE_TYPE prvUSART_ISR_NonNakedBehaviour( void )
|
||||
{
|
||||
/* Now we can declare the local variables. */
|
||||
signed portCHAR cChar;
|
||||
portBASE_TYPE xHigherPriorityTaskWoken = pdFALSE;
|
||||
unsigned portLONG ulStatus;
|
||||
volatile avr32_usart_t *usart = serialPORT_USART;
|
||||
portBASE_TYPE retstatus;
|
||||
|
||||
/* What caused the interrupt? */
|
||||
ulStatus = usart->csr & usart->imr;
|
||||
|
||||
if (ulStatus & AVR32_USART_CSR_TXRDY_MASK)
|
||||
{
|
||||
/* The interrupt was caused by the THR becoming empty. Are there any
|
||||
more characters to transmit?
|
||||
Because FreeRTOS is not supposed to run with nested interrupts, put all OS
|
||||
calls in a critical section . */
|
||||
portENTER_CRITICAL();
|
||||
retstatus = xQueueReceiveFromISR( xCharsForTx, &cChar, &xHigherPriorityTaskWoken );
|
||||
portEXIT_CRITICAL();
|
||||
|
||||
if (retstatus == pdTRUE)
|
||||
{
|
||||
/* A character was retrieved from the queue so can be sent to the
|
||||
THR now. */
|
||||
usart->thr = cChar;
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Queue empty, nothing to send so turn off the Tx interrupt. */
|
||||
usart->idr = AVR32_USART_IDR_TXRDY_MASK;
|
||||
}
|
||||
}
|
||||
|
||||
if (ulStatus & AVR32_USART_CSR_RXRDY_MASK)
|
||||
{
|
||||
/* The interrupt was caused by the receiver getting data. */
|
||||
cChar = usart->rhr; //TODO
|
||||
|
||||
/* Because FreeRTOS is not supposed to run with nested interrupts, put all OS
|
||||
calls in a critical section . */
|
||||
portENTER_CRITICAL();
|
||||
xQueueSendFromISR(xRxedChars, &cChar, &xHigherPriorityTaskWoken);
|
||||
portEXIT_CRITICAL();
|
||||
}
|
||||
|
||||
/* The return value will be used by portEXIT_SWITCHING_ISR() to know if it
|
||||
should perform a vTaskSwitchContext(). */
|
||||
return ( xHigherPriorityTaskWoken );
|
||||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
/*
|
||||
* USART interrupt service routine.
|
||||
*/
|
||||
#if __GNUC__
|
||||
__attribute__((__naked__))
|
||||
#elif __ICCAVR32__
|
||||
#pragma shadow_registers = full // Naked.
|
||||
#endif
|
||||
|
||||
static void vUSART_ISR( void )
|
||||
{
|
||||
/* This ISR can cause a context switch, so the first statement must be a
|
||||
call to the portENTER_SWITCHING_ISR() macro. This must be BEFORE any
|
||||
variable declarations. */
|
||||
portENTER_SWITCHING_ISR();
|
||||
|
||||
prvUSART_ISR_NonNakedBehaviour();
|
||||
|
||||
/* Exit the ISR. If a task was woken by either a character being received
|
||||
or transmitted then a context switch will occur. */
|
||||
portEXIT_SWITCHING_ISR();
|
||||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
|
||||
/*
|
||||
* Init the serial port for the Minimal implementation.
|
||||
*/
|
||||
xComPortHandle xSerialPortInitMinimal( unsigned portLONG ulWantedBaud, unsigned portBASE_TYPE uxQueueLength )
|
||||
{
|
||||
static const gpio_map_t USART_GPIO_MAP =
|
||||
{
|
||||
{ serialPORT_USART_RX_PIN, serialPORT_USART_RX_FUNCTION },
|
||||
{ serialPORT_USART_TX_PIN, serialPORT_USART_TX_FUNCTION }
|
||||
};
|
||||
|
||||
xComPortHandle xReturn = serHANDLE;
|
||||
volatile avr32_usart_t *usart = serialPORT_USART;
|
||||
int cd; /* USART Clock Divider. */
|
||||
|
||||
/* Create the rx and tx queues. */
|
||||
vprvSerialCreateQueues( uxQueueLength, &xRxedChars, &xCharsForTx );
|
||||
|
||||
/* Configure USART. */
|
||||
if( ( xRxedChars != serINVALID_QUEUE ) &&
|
||||
( xCharsForTx != serINVALID_QUEUE ) &&
|
||||
( ulWantedBaud != ( unsigned portLONG ) 0 ) )
|
||||
{
|
||||
portENTER_CRITICAL();
|
||||
{
|
||||
/**
|
||||
** Reset USART.
|
||||
**/
|
||||
/* Disable all USART interrupt sources to begin... */
|
||||
usart->idr = 0xFFFFFFFF;
|
||||
|
||||
/* Reset mode and other registers that could cause unpredictable
|
||||
behaviour after reset */
|
||||
usart->mr = 0; /* Reset Mode register. */
|
||||
usart->rtor = 0; /* Reset Receiver Time-out register. */
|
||||
usart->ttgr = 0; /* Reset Transmitter Timeguard register. */
|
||||
|
||||
/* Shutdown RX and TX, reset status bits, reset iterations in CSR, reset NACK
|
||||
and turn off DTR and RTS */
|
||||
usart->cr = AVR32_USART_CR_RSTRX_MASK |
|
||||
AVR32_USART_CR_RSTTX_MASK |
|
||||
AVR32_USART_CR_RXDIS_MASK |
|
||||
AVR32_USART_CR_TXDIS_MASK |
|
||||
AVR32_USART_CR_RSTSTA_MASK |
|
||||
AVR32_USART_CR_RSTIT_MASK |
|
||||
AVR32_USART_CR_RSTNACK_MASK |
|
||||
AVR32_USART_CR_DTRDIS_MASK |
|
||||
AVR32_USART_CR_RTSDIS_MASK;
|
||||
|
||||
/**
|
||||
** Configure USART.
|
||||
**/
|
||||
/* Enable USART RXD & TXD pins. */
|
||||
gpio_enable_module( USART_GPIO_MAP, sizeof( USART_GPIO_MAP ) / sizeof( USART_GPIO_MAP[0] ) );
|
||||
|
||||
/* Set the USART baudrate to be as close as possible to the wanted baudrate. */
|
||||
/*
|
||||
* ** BAUDRATE CALCULATION **
|
||||
*
|
||||
* Selected Clock Selected Clock
|
||||
* baudrate = ---------------- or baudrate = ----------------
|
||||
* 16 x CD 8 x CD
|
||||
*
|
||||
* (with 16x oversampling) (with 8x oversampling)
|
||||
*/
|
||||
|
||||
if( ulWantedBaud < ( configCPU_CLOCK_HZ / 16 ) )
|
||||
{
|
||||
/* Use 8x oversampling */
|
||||
usart->mr |= (1<<AVR32_USART_MR_OVER_OFFSET);
|
||||
cd = configCPU_CLOCK_HZ / (8*ulWantedBaud);
|
||||
|
||||
if( cd < 2 )
|
||||
{
|
||||
return serINVALID_COMPORT_HANDLER;
|
||||
}
|
||||
|
||||
usart->brgr = (cd << AVR32_USART_BRGR_CD_OFFSET);
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Use 16x oversampling */
|
||||
usart->mr &= ~(1<<AVR32_USART_MR_OVER_OFFSET);
|
||||
cd = configCPU_CLOCK_HZ / (16*ulWantedBaud);
|
||||
|
||||
if( cd > 65535 )
|
||||
{
|
||||
/* Baudrate is too low */
|
||||
return serINVALID_COMPORT_HANDLER;
|
||||
}
|
||||
}
|
||||
|
||||
usart->brgr = (cd << AVR32_USART_BRGR_CD_OFFSET);
|
||||
|
||||
/* Set the USART Mode register: Mode=Normal(0), Clk selection=MCK(0),
|
||||
CHRL=8, SYNC=0(asynchronous), PAR=None, NBSTOP=1, CHMODE=0, MSBF=0,
|
||||
MODE9=0, CKLO=0, OVER(previously done when setting the baudrate),
|
||||
other fields not used in this mode. */
|
||||
usart->mr |= ((8-5) << AVR32_USART_MR_CHRL_OFFSET ) |
|
||||
( 4 << AVR32_USART_MR_PAR_OFFSET ) |
|
||||
( 1 << AVR32_USART_MR_NBSTOP_OFFSET);
|
||||
|
||||
/* Write the Transmit Timeguard Register */
|
||||
usart->ttgr = 0;
|
||||
|
||||
|
||||
/* Register the USART interrupt handler to the interrupt controller and
|
||||
enable the USART interrupt. */
|
||||
INTC_register_interrupt((__int_handler)&vUSART_ISR, serialPORT_USART_IRQ, INT1);
|
||||
|
||||
/* Enable USART interrupt sources (but not Tx for now)... */
|
||||
usart->ier = AVR32_USART_IER_RXRDY_MASK;
|
||||
|
||||
/* Enable receiver and transmitter... */
|
||||
usart->cr |= AVR32_USART_CR_TXEN_MASK | AVR32_USART_CR_RXEN_MASK;
|
||||
}
|
||||
portEXIT_CRITICAL();
|
||||
}
|
||||
else
|
||||
{
|
||||
xReturn = serINVALID_COMPORT_HANDLER;
|
||||
}
|
||||
|
||||
return xReturn;
|
||||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
signed portBASE_TYPE xSerialGetChar( xComPortHandle pxPort, signed portCHAR *pcRxedChar, portTickType xBlockTime )
|
||||
{
|
||||
/* The port handle is not required as this driver only supports UART0. */
|
||||
( void ) pxPort;
|
||||
|
||||
/* 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;
|
||||
}
|
||||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
void vSerialPutString( xComPortHandle pxPort, const signed portCHAR * const pcString, unsigned portSHORT usStringLength )
|
||||
{
|
||||
signed portCHAR *pxNext;
|
||||
|
||||
/* NOTE: This implementation does not handle the queue being full as no
|
||||
block time is used! */
|
||||
|
||||
/* The port handle is not required as this driver only supports UART0. */
|
||||
( void ) pxPort;
|
||||
|
||||
/* Send each character in the string, one at a time. */
|
||||
pxNext = ( signed portCHAR * ) pcString;
|
||||
while( *pxNext )
|
||||
{
|
||||
xSerialPutChar( pxPort, *pxNext, serNO_BLOCK );
|
||||
pxNext++;
|
||||
}
|
||||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
signed portBASE_TYPE xSerialPutChar( xComPortHandle pxPort, signed portCHAR cOutChar, portTickType xBlockTime )
|
||||
{
|
||||
volatile avr32_usart_t *usart = serialPORT_USART;
|
||||
|
||||
/* Place the character in the queue of characters to be transmitted. */
|
||||
if( xQueueSend( xCharsForTx, &cOutChar, xBlockTime ) != pdPASS )
|
||||
{
|
||||
return pdFAIL;
|
||||
}
|
||||
|
||||
/* Turn on the Tx interrupt so the ISR will remove the character from the
|
||||
queue and send it. This does not need to be in a critical section as
|
||||
if the interrupt has already removed the character the next interrupt
|
||||
will simply turn off the Tx interrupt again. */
|
||||
usart->ier = (1 << AVR32_USART_IER_TXRDY_OFFSET);
|
||||
|
||||
return pdPASS;
|
||||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
void vSerialClose( xComPortHandle xPort )
|
||||
{
|
||||
/* Not supported as not required by the demo application. */
|
||||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
/*###########################################################*/
|
||||
|
||||
/*
|
||||
* Create the rx and tx queues.
|
||||
*/
|
||||
static void vprvSerialCreateQueues( unsigned portBASE_TYPE uxQueueLength, xQueueHandle *pxRxedChars, xQueueHandle *pxCharsForTx )
|
||||
{
|
||||
/* Create the queues used to hold Rx and Tx characters. */
|
||||
xRxedChars = xQueueCreate( uxQueueLength, ( unsigned portBASE_TYPE ) sizeof( signed portCHAR ) );
|
||||
xCharsForTx = xQueueCreate( uxQueueLength + 1, ( unsigned portBASE_TYPE ) sizeof( signed portCHAR ) );
|
||||
|
||||
/* Pass back a reference to the queues so the serial API file can
|
||||
post/receive characters. */
|
||||
*pxRxedChars = xRxedChars;
|
||||
*pxCharsForTx = xCharsForTx;
|
||||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
Loading…
Reference in New Issue