/* * FreeRTOS V202212.00 * 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. * * https://www.FreeRTOS.org * https://github.com/FreeRTOS * */ /****************************************************************************** * This project provides two demo applications. A simple blinky style project, * and a more comprehensive test and demo application. The * mainCREATE_SIMPLE_BLINKY_DEMO_ONLY setting (defined in this file) is used to * select between the two. The simply blinky demo is implemented and described * in main_blinky.c. The more comprehensive test and demo application is * implemented and described in main_full.c. * * This file implements the code that is not demo specific, including the * hardware setup and FreeRTOS hook functions. It also contains a dummy * interrupt service routine called Dummy_IRQHandler() that is provided as an * example of how to use interrupt safe FreeRTOS API functions (those that end * in "FromISR"). * *****************************************************************************/ /* Standard includes. */ #include "string.h" /* FreeRTOS includes. */ #include "FreeRTOS.h" #include "task.h" /* Demo application include. */ #include "ParTest.h" /* Set mainCREATE_SIMPLE_BLINKY_DEMO_ONLY to one to run the simple blinky demo, * or 0 to run the more comprehensive test and demo application. */ #define mainCREATE_SIMPLE_BLINKY_DEMO_ONLY 1 /*-----------------------------------------------------------*/ /* * Perform any application specific hardware configuration. The clocks, * memory, etc. are configured before main() is called. */ static void prvSetupHardware( void ); /* main_blinky() is used when mainCREATE_SIMPLE_BLINKY_DEMO_ONLY is set to 1. * main_full() is used when mainCREATE_SIMPLE_BLINKY_DEMO_ONLY is set to 0. */ extern void main_blinky( void ); extern void main_full( void ); /*-----------------------------------------------------------*/ int main( void ) { /* Prepare the hardware to run this demo. */ prvSetupHardware(); /* The mainCREATE_SIMPLE_BLINKY_DEMO_ONLY setting is described at the top * of this file. */ #if mainCREATE_SIMPLE_BLINKY_DEMO_ONLY == 1 { main_blinky(); } #else { main_full(); } #endif return 0; } /*-----------------------------------------------------------*/ static void prvSetupHardware( void ) { vParTestInitialise(); } /*-----------------------------------------------------------*/ void vApplicationMallocFailedHook( void ) { /* vApplicationMallocFailedHook() will only be called if * configUSE_MALLOC_FAILED_HOOK is set to 1 in FreeRTOSConfig.h. It is a hook * function that will get called if a call to pvPortMalloc() fails. * pvPortMalloc() is called internally by the kernel whenever a task, queue, * timer or semaphore is created. It is also called by various parts of the * demo application. If heap_1.c or heap_2.c are used, then the size of the * heap available to pvPortMalloc() is defined by configTOTAL_HEAP_SIZE in * FreeRTOSConfig.h, and the xPortGetFreeHeapSize() API function can be used * to query the size of free heap space that remains (although it does not * provide information on how the remaining heap might be fragmented). */ taskDISABLE_INTERRUPTS(); for( ; ; ) { } } /*-----------------------------------------------------------*/ void vApplicationIdleHook( void ) { /* vApplicationIdleHook() will only be called if configUSE_IDLE_HOOK is set * to 1 in FreeRTOSConfig.h. It will be called on each iteration of the idle * task. It is essential that code added to this hook function never attempts * to block in any way (for example, call xQueueReceive() with a block time * specified, or call vTaskDelay()). If the application makes use of the * vTaskDelete() API function (as this demo application does) then it is also * important that vApplicationIdleHook() is permitted to return to its calling * function, because it is the responsibility of the idle task to clean up * memory allocated by the kernel to any task that has since been deleted. */ } /*-----------------------------------------------------------*/ void vApplicationStackOverflowHook( TaskHandle_t pxTask, char * pcTaskName ) { ( void ) pcTaskName; ( void ) pxTask; /* Run time stack overflow checking is performed if * configCHECK_FOR_STACK_OVERFLOW is defined to 1 or 2. This hook * function is called if a stack overflow is detected. */ taskDISABLE_INTERRUPTS(); for( ; ; ) { } } /*-----------------------------------------------------------*/ void vApplicationTickHook( void ) { /* This function will be called by each tick interrupt if * configUSE_TICK_HOOK is set to 1 in FreeRTOSConfig.h. User code can be * added here, but the tick hook is called from an interrupt context, so * code must not attempt to block, and only the interrupt safe FreeRTOS API * functions can be used (those that end in FromISR()). */ } /*-----------------------------------------------------------*/ #ifdef JUST_AN_EXAMPLE_ISR void Dummy_IRQHandler( void ) { long lHigherPriorityTaskWoken = pdFALSE; /* Clear the interrupt if necessary. */ Dummy_ClearITPendingBit(); /* This interrupt does nothing more than demonstrate how to synchronise a * task with an interrupt. A semaphore is used for this purpose. Note * lHigherPriorityTaskWoken is initialised to zero. Only FreeRTOS API functions * that end in "FromISR" can be called from an ISR. */ xSemaphoreGiveFromISR( xTestSemaphore, &lHigherPriorityTaskWoken ); /* If there was a task that was blocked on the semaphore, and giving the * semaphore caused the task to unblock, and the unblocked task has a priority * higher than the current Running state task (the task that this interrupt * interrupted), then lHigherPriorityTaskWoken will have been set to pdTRUE * internally within xSemaphoreGiveFromISR(). Passing pdTRUE into the * portEND_SWITCHING_ISR() macro will result in a context switch being pended to * ensure this interrupt returns directly to the unblocked, higher priority, * task. Passing pdFALSE into portEND_SWITCHING_ISR() has no effect. */ portEND_SWITCHING_ISR( lHigherPriorityTaskWoken ); } #endif /* JUST_AN_EXAMPLE_ISR */