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569c78fd8c
* Remove co-routine centric CORTEX_LM3S102_Rowley demos. Remove CORTEX_LM3S102_Rowley Demo2 and Demo3. Update Demo1 to no longer use coroutines. * Remove co-routines from MB91460_Softune demo * FreeRTOS_96348hs_SK16FX100PMC: Remove co-routine usage. Remove co-routine usage from FreeRTOS_96348hs_SK16FX100PMC demo. * MB96350_Softune_Dice_Kit: Remove co-routine usage Remove co-routines usage from MB96350_Softune_Dice_Kit demo * AVR_Dx_IAR: Remove co-routine usage * AVR_Dx_Atmel_Studio: Remove co-routine usage * PIC24_MPLAB: Remove autogenerated files and add to .gitignore * PIC24_MPLAB: Remove co-routine usage from demo * AVR_ATMega323_IAR: Remove co-routine usage * ColdFire_MCF52221_CodeWarrior: Remove coroutine usage * AVR_ATMega4809_MPLAB.X: Remove co-routine usage * AVR_ATMega4809_IAR: Remove co-routine usage * AVR_ATMega4809_Atmel_Studio: Remove coroutine usage * AVR_ATMega323_WinAVR: Remove coroutine usage * AVR_Dx_MPLAB.X: Remove coroutine usage * dsPIC_MPLAB: Remove coroutine usage * CORTEX_LM3S102_GCC: Remove coroutines and coroutine centric demos * CORTEX_LM3S102_GCC: Update makefile to discard unused symbols Allows fitting in the limited ram/flash for this part. * CORTEX_LM3S316_IAR: Remove coroutines * Demos: Remove references to crflash.c, crhook.c, crflash.h, crhook.h * Remove coroutine options from FreeRTOSConfig.h files * Xilinx: Remove backup file generated by revup utility * Demos: Remove Coroutine related config items and references * Format CBMC FreeRTOSConfig.h * Update URL from aws.amazon.com/freertos to github.com/FreeRTOS * Fix copyright year and license text * Fix license text in demo files * Update header check excluded path list * Add configBENCHMARK to lexicon
96 lines
3.8 KiB
C
96 lines
3.8 KiB
C
/*
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* FreeRTOS V202112.00
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* Copyright (C) 2020 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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* https://www.FreeRTOS.org
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* https://github.com/FreeRTOS
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*
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*/
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/*
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* This file defines the button push task and ISR as described at the top of
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* main.c. The ISR is called from a wrapper function defined in ButtonISR.s26.
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*/
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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 "semphr.h"
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/* The LED output used by the button push task. */
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#define butLED1 P7_bit.no7
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/* A short delay used for button debouncing. */
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#define butDEBOUNCE_DELAY ( 200 / portTICK_PERIOD_MS )
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/* The semaphore used to synchronise the button push task with the interrupt. */
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static SemaphoreHandle_t xButtonSemaphore;
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/*
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* The definition of the button task itself. See the comments at the top of
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* main.c.
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*/
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void vButtonTask( void *pvParameters )
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{
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/* Ensure the semaphore is created before it gets used. */
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vSemaphoreCreateBinary( xButtonSemaphore );
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for( ;; )
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{
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/* Block on the semaphore to wait for an interrupt event. The semaphore
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is 'given' from vButtonISRHandler() below. Using portMAX_DELAY as the
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block time will cause the task to block indefinitely provided
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INCLUDE_vTaskSuspend is set to 1 in FreeRTOSConfig.h. */
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xSemaphoreTake( xButtonSemaphore, portMAX_DELAY );
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/* The button must have been pushed for this line to be executed.
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Simply toggle the LED. */
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butLED1 = !butLED1;
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/* Wait a short time then clear any pending button pushes as a crude
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method of debouncing the switch. xSemaphoreTake() uses a block time of
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zero this time so it returns immediately rather than waiting for the
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interrupt to occur. */
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vTaskDelay( butDEBOUNCE_DELAY );
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xSemaphoreTake( xButtonSemaphore, 0 );
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}
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}
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/*-----------------------------------------------------------*/
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/*
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* The C portion of the interrupt handler. Interrupts are triggered by pushing
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* the button on the target board. This interrupt can cause a context switch
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* so has an assembly file wrapper defined within ButtonISR.s26.
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*/
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void vButtonISRHandler( void )
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{
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short sHigherPriorityTaskWoken = pdFALSE;
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/* 'Give' the semaphore to unblock the button task. */
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xSemaphoreGiveFromISR( xButtonSemaphore, &sHigherPriorityTaskWoken );
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/* If giving the semaphore unblocked a task, and the unblocked task has a
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priority that is higher than the currently running task, then
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sHigherPriorityTaskWoken will have been set to pdTRUE. Passing a pdTRUE
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value to portYIELD_FROM_ISR() will cause this interrupt to return directly
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to the higher priority unblocked task. */
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portYIELD_FROM_ISR( sHigherPriorityTaskWoken );
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}
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/*-----------------------------------------------------------*/
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