mirror of
https://github.com/FreeRTOS/FreeRTOS-Kernel.git
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282 lines
12 KiB
C
282 lines
12 KiB
C
/*
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FreeRTOS V7.6.0 - Copyright (C) 2013 Real Time Engineers Ltd.
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All rights reserved
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VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
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***************************************************************************
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* *
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* FreeRTOS provides completely free yet professionally developed, *
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* robust, strictly quality controlled, supported, and cross *
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* platform software that has become a de facto standard. *
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* *
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* Help yourself get started quickly and support the FreeRTOS *
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* project by purchasing a FreeRTOS tutorial book, reference *
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* manual, or both from: http://www.FreeRTOS.org/Documentation *
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* *
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* Thank you! *
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* *
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***************************************************************************
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This file is part of the FreeRTOS distribution.
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FreeRTOS is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License (version 2) as published by the
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Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.
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>>! NOTE: The modification to the GPL is included to allow you to distribute
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>>! a combined work that includes FreeRTOS without being obliged to provide
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>>! the source code for proprietary components outside of the FreeRTOS
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>>! kernel.
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FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. Full license text is available from the following
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link: http://www.freertos.org/a00114.html
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1 tab == 4 spaces!
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***************************************************************************
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* *
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* Having a problem? Start by reading the FAQ "My application does *
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* not run, what could be wrong?" *
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* *
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* http://www.FreeRTOS.org/FAQHelp.html *
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* *
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***************************************************************************
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http://www.FreeRTOS.org - Documentation, books, training, latest versions,
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license and Real Time Engineers Ltd. contact details.
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http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
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including FreeRTOS+Trace - an indispensable productivity tool, a DOS
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compatible FAT file system, and our tiny thread aware UDP/IP stack.
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http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
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Integrity Systems to sell under the OpenRTOS brand. Low cost OpenRTOS
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licenses offer ticketed support, indemnification and middleware.
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http://www.SafeRTOS.com - High Integrity Systems also provide a safety
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engineered and independently SIL3 certified version for use in safety and
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mission critical applications that require provable dependability.
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1 tab == 4 spaces!
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*/
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/******************************************************************************
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* This project provides two demo applications. A low power project that
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* demonstrates the FreeRTOS tickless mode, and a more comprehensive test and
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* demo application. The configCREATE_LOW_POWER_DEMO setting (defined at the
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* top of FreeRTOSConfig.h) is used to select between the two. The low power
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* demo is implemented and described in main_low_power.c. The more
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* comprehensive test and demo application is implemented and described in
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* main_full.c.
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*
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* This file implements the code that is not demo specific, including the
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* hardware setup and FreeRTOS hook functions.
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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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/* ST library functions. */
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#include "stm32l1xx.h"
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#include "discover_board.h"
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/*-----------------------------------------------------------*/
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/*
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* Set up the hardware ready to run this demo.
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*/
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static void prvSetupHardware( void );
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/*
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* main_low_power() is used when configCREATE_LOW_POWER_DEMO is set to 1.
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* main_full() is used when configCREATE_LOW_POWER_DEMO is set to 0.
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* configCREATE_LOW_POWER_DEMO is defined at the top of main.c.
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*/
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extern void main_low_power( void );
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extern void main_full( void );
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/* Prototypes for the standard FreeRTOS callback/hook functions implemented
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within this file. */
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void vApplicationMallocFailedHook( void );
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void vApplicationIdleHook( void );
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void vApplicationStackOverflowHook( xTaskHandle pxTask, signed char *pcTaskName );
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void vApplicationTickHook( void );
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/*-----------------------------------------------------------*/
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int main( void )
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{
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/* Prepare the hardware to run this demo. */
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prvSetupHardware();
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/* The configCREATE_LOW_POWER_DEMO setting is described at the top of
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this file. */
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#if configCREATE_LOW_POWER_DEMO == 1
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{
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main_low_power();
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}
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#else
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{
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main_full();
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}
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#endif
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/* This line will never be reached. */
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return 0;
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}
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/*-----------------------------------------------------------*/
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static void prvSetupHardware( void )
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{
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/* GPIO, EXTI and NVIC Init structure declaration */
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GPIO_InitTypeDef GPIO_InitStructure;
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EXTI_InitTypeDef EXTI_InitStructure;
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NVIC_InitTypeDef NVIC_InitStructure;
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void SystemCoreClockUpdate( void );
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/* System function that updates the SystemCoreClock variable. */
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SystemCoreClockUpdate();
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/* Essential on STM32 Cortex-M devices. */
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NVIC_PriorityGroupConfig( NVIC_PriorityGroup_4 );
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/* Systick is fed from HCLK/8. */
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SysTick_CLKSourceConfig( SysTick_CLKSource_HCLK_Div8 );
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/* Set MSI clock range to ~4.194MHz. */
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RCC_MSIRangeConfig( RCC_MSIRange_6 );
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/* Enable the GPIOs clocks. */
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RCC_AHBPeriphClockCmd( RCC_AHBPeriph_GPIOA | RCC_AHBPeriph_GPIOB | RCC_AHBPeriph_GPIOC| RCC_AHBPeriph_GPIOD| RCC_AHBPeriph_GPIOE| RCC_AHBPeriph_GPIOH, ENABLE );
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/* Enable comparator clocks. */
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RCC_APB1PeriphClockCmd( RCC_APB1Periph_COMP, ENABLE );
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/* Enable SYSCFG clocks. */
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RCC_APB2PeriphClockCmd( RCC_APB2Periph_SYSCFG , ENABLE );
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/* Set internal voltage regulator to 1.5V. */
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PWR_VoltageScalingConfig( PWR_VoltageScaling_Range2 );
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/* Wait Until the Voltage Regulator is ready. */
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while( PWR_GetFlagStatus( PWR_FLAG_VOS ) != RESET );
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/* Configure User Button pin as input */
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GPIO_InitStructure.GPIO_Pin = USERBUTTON_GPIO_PIN;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;
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GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_40MHz;
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GPIO_Init( USERBUTTON_GPIO_PORT, &GPIO_InitStructure );
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/* Select User Button pin as input source for EXTI Line */
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SYSCFG_EXTILineConfig( EXTI_PortSourceGPIOA, EXTI_PinSource0 );
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/* Configure EXT1 Line 0 in interrupt mode trigged on Rising edge */
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EXTI_InitStructure.EXTI_Line = EXTI_Line0 ; /* PA0 for User button AND IDD_WakeUP */
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EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
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EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising;
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EXTI_InitStructure.EXTI_LineCmd = ENABLE;
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EXTI_Init( &EXTI_InitStructure );
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/* Enable and set EXTI0 Interrupt to the lowest priority */
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NVIC_InitStructure.NVIC_IRQChannel = EXTI0_IRQn;
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NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = configLIBRARY_LOWEST_INTERRUPT_PRIORITY;
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NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
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NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
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NVIC_Init( &NVIC_InitStructure );
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/* Configure the LED_pin as output push-pull for LD3 & LD4 usage */
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GPIO_InitStructure.GPIO_Pin = LD_GREEN_GPIO_PIN | LD_BLUE_GPIO_PIN;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
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GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
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GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz;
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GPIO_Init( LD_GPIO_PORT, &GPIO_InitStructure );
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/* Force a low level on LEDs */
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GPIO_LOW( LD_GPIO_PORT, LD_GREEN_GPIO_PIN );
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GPIO_LOW( LD_GPIO_PORT, LD_BLUE_GPIO_PIN );
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}
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/*-----------------------------------------------------------*/
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void vApplicationMallocFailedHook( void )
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{
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/* vApplicationMallocFailedHook() will only be called if
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configUSE_MALLOC_FAILED_HOOK is set to 1 in FreeRTOSConfig.h. It is a hook
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function that will get called if a call to pvPortMalloc() fails.
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pvPortMalloc() is called internally by the kernel whenever a task, queue,
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timer or semaphore is created. It is also called by various parts of the
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demo application. If heap_1.c or heap_2.c are used, then the size of the
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heap available to pvPortMalloc() is defined by configTOTAL_HEAP_SIZE in
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FreeRTOSConfig.h, and the xPortGetFreeHeapSize() API function can be used
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to query the size of free heap space that remains (although it does not
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provide information on how the remaining heap might be fragmented). */
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taskDISABLE_INTERRUPTS();
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for( ;; );
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}
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/*-----------------------------------------------------------*/
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void vApplicationIdleHook( void )
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{
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/* vApplicationIdleHook() will only be called if configUSE_IDLE_HOOK is set
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to 1 in FreeRTOSConfig.h. It will be called on each iteration of the idle
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task. It is essential that code added to this hook function never attempts
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to block in any way (for example, call xQueueReceive() with a block time
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specified, or call vTaskDelay()). If the application makes use of the
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vTaskDelete() API function (as this demo application does) then it is also
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important that vApplicationIdleHook() is permitted to return to its calling
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function, because it is the responsibility of the idle task to clean up
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memory allocated by the kernel to any task that has since been deleted. */
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}
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/*-----------------------------------------------------------*/
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void vApplicationStackOverflowHook( xTaskHandle pxTask, signed char *pcTaskName )
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{
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( void ) pcTaskName;
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( void ) pxTask;
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/* Run time stack overflow checking is performed if
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configCHECK_FOR_STACK_OVERFLOW is defined to 1 or 2. This hook
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function is called if a stack overflow is detected. */
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taskDISABLE_INTERRUPTS();
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for( ;; );
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}
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/*-----------------------------------------------------------*/
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void vApplicationTickHook( void )
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{
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/* This function will be called by each tick interrupt if
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configUSE_TICK_HOOK is set to 1 in FreeRTOSConfig.h. User code can be
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added here, but the tick hook is called from an interrupt context, so
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code must not attempt to block, and only the interrupt safe FreeRTOS API
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functions can be used (those that end in FromISR()). */
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}
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/*-----------------------------------------------------------*/
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void vAssertCalled( unsigned long ulLine, const char * const pcFileName )
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{
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volatile unsigned long ulSetToNonZeroInDebuggerToContinue = 0;
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/* Parameters are not used. */
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( void ) ulLine;
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( void ) pcFileName;
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taskENTER_CRITICAL();
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{
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while( ulSetToNonZeroInDebuggerToContinue == 0 )
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{
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/* Use the debugger to set ulSetToNonZeroInDebuggerToContinue to a
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non zero value to step out of this function to the point that raised
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this assert(). */
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__asm volatile( "NOP" );
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__asm volatile( "NOP" );
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}
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}
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taskEXIT_CRITICAL();
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}
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