| /* | |
| FreeRTOS V8.0.1 - Copyright (C) 2014 Real Time Engineers Ltd. | |
| All rights reserved | |
| VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION. | |
| *************************************************************************** | |
| * * | |
| * FreeRTOS provides completely free yet professionally developed, * | |
| * robust, strictly quality controlled, supported, and cross * | |
| * platform software that has become a de facto standard. * | |
| * * | |
| * Help yourself get started quickly and support the FreeRTOS * | |
| * project by purchasing a FreeRTOS tutorial book, reference * | |
| * manual, or both from: http://www.FreeRTOS.org/Documentation * | |
| * * | |
| * Thank you! * | |
| * * | |
| *************************************************************************** | |
| This file is part of the FreeRTOS distribution. | |
| FreeRTOS is free software; you can redistribute it and/or modify it under | |
| the terms of the GNU General Public License (version 2) as published by the | |
| Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception. | |
| >>! NOTE: The modification to the GPL is included to allow you to !<< | |
| >>! distribute a combined work that includes FreeRTOS without being !<< | |
| >>! obliged to provide the source code for proprietary components !<< | |
| >>! outside of the FreeRTOS kernel. !<< | |
| FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY | |
| WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS | |
| FOR A PARTICULAR PURPOSE. Full license text is available from the following | |
| link: http://www.freertos.org/a00114.html | |
| 1 tab == 4 spaces! | |
| *************************************************************************** | |
| * * | |
| * Having a problem? Start by reading the FAQ "My application does * | |
| * not run, what could be wrong?" * | |
| * * | |
| * http://www.FreeRTOS.org/FAQHelp.html * | |
| * * | |
| *************************************************************************** | |
| http://www.FreeRTOS.org - Documentation, books, training, latest versions, | |
| license and Real Time Engineers Ltd. contact details. | |
| http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products, | |
| including FreeRTOS+Trace - an indispensable productivity tool, a DOS | |
| compatible FAT file system, and our tiny thread aware UDP/IP stack. | |
| http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High | |
| Integrity Systems to sell under the OpenRTOS brand. Low cost OpenRTOS | |
| licenses offer ticketed support, indemnification and middleware. | |
| http://www.SafeRTOS.com - High Integrity Systems also provide a safety | |
| engineered and independently SIL3 certified version for use in safety and | |
| mission critical applications that require provable dependability. | |
| 1 tab == 4 spaces! | |
| */ | |
| /****************************************************************************** | |
| * 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. | |
| * | |
| * | |
| * Additional code: | |
| * | |
| * This demo does not contain a non-kernel interrupt service routine that | |
| * can be used as an example for application writers to use as a reference. | |
| * Therefore, the framework of a dummy (not installed) handler is provided | |
| * in this file. The dummy function is called Dummy_IRQHandler(). Please | |
| * ensure to read the comments in the function itself, but more importantly, | |
| * the notes on the function contained on the documentation page for this demo | |
| * that is found on the FreeRTOS.org web site. | |
| */ | |
| /* | |
| * The following #error directive is to remind users that a batch file must be | |
| * executed prior to this project being built. Once it has been executed | |
| * remove the #error line below. | |
| */ | |
| #error Ensure CreateProjectDirectoryStructure.bat has been executed before building. See comment immediately above. | |
| /* Standard includes. */ | |
| #include <stdio.h> | |
| /* Kernel includes. */ | |
| #include "FreeRTOS.h" | |
| #include "task.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 | |
| /*-----------------------------------------------------------*/ | |
| /* | |
| * Set up the hardware ready to run this demo. | |
| */ | |
| 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 ) | |
| { | |
| configCONFIGURE_LED(); | |
| /* Ensure all priority bits are assigned as preemption priority bits. */ | |
| NVIC_SetPriorityGrouping( 0 ); | |
| } | |
| /*-----------------------------------------------------------*/ | |
| 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. */ | |
| 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 */ |