/* | |
* FreeRTOS Kernel V10.3.0 | |
* 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. | |
* | |
* http://www.FreeRTOS.org | |
* http://aws.amazon.com/freertos | |
* | |
* 1 tab == 4 spaces! | |
*/ | |
/****************************************************************************** | |
* This project provides two demo applications. A low power project that | |
* demonstrates the FreeRTOS tickless mode, and a more comprehensive test and | |
* demo application. The configCREATE_LOW_POWER_DEMO setting (defined at the | |
* top of FreeRTOSConfig.h) is used to select between the two. The low power | |
* demo is implemented and described in main_low_power.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. | |
*/ | |
/* Kernel includes. */ | |
#include "FreeRTOS.h" | |
#include "task.h" | |
/* Platform includes. */ | |
#include "lcd.h" | |
/*-----------------------------------------------------------*/ | |
/* | |
* main_low_power() is used when configCREATE_LOW_POWER_DEMO is set to 1. | |
* main_full() is used when configCREATE_LOW_POWER_DEMO is set to 0. | |
*/ | |
extern void main_low_power( void ); | |
extern void main_full( void ); | |
/* Prototypes for the standard FreeRTOS callback/hook functions implemented | |
within this file. */ | |
void vApplicationMallocFailedHook( void ); | |
void vApplicationIdleHook( void ); | |
void vApplicationStackOverflowHook( TaskHandle_t pxTask, char *pcTaskName ); | |
void vApplicationTickHook( void ); | |
/*-----------------------------------------------------------*/ | |
/* See the documentation page for this demo on the FreeRTOS.org web site for | |
full information - including hardware setup requirements. */ | |
void main( void ) | |
{ | |
lcd_initialize(); | |
lcd_display( LCD_LINE1, "FreeRTOS" ); | |
/* The configCREATE_LOW_POWER_DEMO setting is described in FreeRTOSConfig.h. */ | |
#if configCREATE_LOW_POWER_DEMO == 1 | |
{ | |
lcd_display( LCD_LINE2, "LP Demo" ); | |
main_low_power(); | |
} | |
#else | |
{ | |
lcd_display( LCD_LINE2, "Ful Demo" ); | |
main_full(); | |
} | |
#endif | |
} | |
/*-----------------------------------------------------------*/ | |
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, heap_2.c or heap_4.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()). */ | |
} | |
/*-----------------------------------------------------------*/ | |
void vAssertCalled( void ) | |
{ | |
volatile unsigned long ul = 0; | |
taskENTER_CRITICAL(); | |
{ | |
/* Set ul to a non-zero value using the debugger to step out of this | |
function. */ | |
while( ul == 0 ) | |
{ | |
nop(); | |
} | |
} | |
taskEXIT_CRITICAL(); | |
} |