mirror of
https://github.com/FreeRTOS/FreeRTOS-Kernel.git
synced 2025-04-20 05:21:59 -04:00
286 lines
12 KiB
C
286 lines
12 KiB
C
/*
|
|
FreeRTOS V9.0.0rc2 - Copyright (C) 2016 Real Time Engineers Ltd.
|
|
All rights reserved
|
|
|
|
VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
|
|
|
|
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 on the following
|
|
link: http://www.freertos.org/a00114.html
|
|
|
|
***************************************************************************
|
|
* *
|
|
* FreeRTOS provides completely free yet professionally developed, *
|
|
* robust, strictly quality controlled, supported, and cross *
|
|
* platform software that is more than just the market leader, it *
|
|
* is the industry's de facto standard. *
|
|
* *
|
|
* Help yourself get started quickly while simultaneously helping *
|
|
* to support the FreeRTOS project by purchasing a FreeRTOS *
|
|
* tutorial book, reference manual, or both: *
|
|
* http://www.FreeRTOS.org/Documentation *
|
|
* *
|
|
***************************************************************************
|
|
|
|
http://www.FreeRTOS.org/FAQHelp.html - Having a problem? Start by reading
|
|
the FAQ page "My application does not run, what could be wrong?". Have you
|
|
defined configASSERT()?
|
|
|
|
http://www.FreeRTOS.org/support - In return for receiving this top quality
|
|
embedded software for free we request you assist our global community by
|
|
participating in the support forum.
|
|
|
|
http://www.FreeRTOS.org/training - Investing in training allows your team to
|
|
be as productive as possible as early as possible. Now you can receive
|
|
FreeRTOS training directly from Richard Barry, CEO of Real Time Engineers
|
|
Ltd, and the world's leading authority on the world's leading RTOS.
|
|
|
|
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.FreeRTOS.org/labs - Where new FreeRTOS products go to incubate.
|
|
Come and try FreeRTOS+TCP, our new open source TCP/IP stack for FreeRTOS.
|
|
|
|
http://www.OpenRTOS.com - Real Time Engineers ltd. license FreeRTOS to High
|
|
Integrity Systems ltd. to sell under the OpenRTOS brand. Low cost OpenRTOS
|
|
licenses offer ticketed support, indemnification and commercial 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 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"
|
|
|
|
/* ST library functions. */
|
|
#include "stm32l1xx.h"
|
|
#include "discover_board.h"
|
|
|
|
/*-----------------------------------------------------------*/
|
|
|
|
/*
|
|
* Set up the hardware ready to run this demo.
|
|
*/
|
|
static void prvSetupHardware( void );
|
|
|
|
/*
|
|
* 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.
|
|
* configCREATE_LOW_POWER_DEMO is defined at the top of main.c.
|
|
*/
|
|
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 );
|
|
|
|
/*-----------------------------------------------------------*/
|
|
|
|
int main( void )
|
|
{
|
|
/* Prepare the hardware to run this demo. */
|
|
prvSetupHardware();
|
|
|
|
/* The configCREATE_LOW_POWER_DEMO setting is described at the top of
|
|
this file. */
|
|
#if configCREATE_LOW_POWER_DEMO == 1
|
|
{
|
|
main_low_power();
|
|
}
|
|
#else
|
|
{
|
|
main_full();
|
|
}
|
|
#endif
|
|
|
|
/* This line will never be reached. */
|
|
return 0;
|
|
}
|
|
/*-----------------------------------------------------------*/
|
|
|
|
static void prvSetupHardware( void )
|
|
{
|
|
/* GPIO, EXTI and NVIC Init structure declaration */
|
|
GPIO_InitTypeDef GPIO_InitStructure;
|
|
EXTI_InitTypeDef EXTI_InitStructure;
|
|
NVIC_InitTypeDef NVIC_InitStructure;
|
|
void SystemCoreClockUpdate( void );
|
|
|
|
/* System function that updates the SystemCoreClock variable. */
|
|
SystemCoreClockUpdate();
|
|
|
|
/* Essential on STM32 Cortex-M devices. */
|
|
NVIC_PriorityGroupConfig( NVIC_PriorityGroup_4 );
|
|
|
|
/* Systick is fed from HCLK/8. */
|
|
SysTick_CLKSourceConfig( SysTick_CLKSource_HCLK_Div8 );
|
|
|
|
/* Set MSI clock range to ~4.194MHz. */
|
|
RCC_MSIRangeConfig( RCC_MSIRange_6 );
|
|
|
|
/* Enable the GPIOs clocks. */
|
|
RCC_AHBPeriphClockCmd( RCC_AHBPeriph_GPIOA | RCC_AHBPeriph_GPIOB | RCC_AHBPeriph_GPIOC| RCC_AHBPeriph_GPIOD| RCC_AHBPeriph_GPIOE| RCC_AHBPeriph_GPIOH, ENABLE );
|
|
|
|
/* Enable comparator clocks. */
|
|
RCC_APB1PeriphClockCmd( RCC_APB1Periph_COMP, ENABLE );
|
|
|
|
/* Enable SYSCFG clocks. */
|
|
RCC_APB2PeriphClockCmd( RCC_APB2Periph_SYSCFG , ENABLE );
|
|
|
|
/* Set internal voltage regulator to 1.5V. */
|
|
PWR_VoltageScalingConfig( PWR_VoltageScaling_Range2 );
|
|
|
|
/* Wait Until the Voltage Regulator is ready. */
|
|
while( PWR_GetFlagStatus( PWR_FLAG_VOS ) != RESET );
|
|
|
|
/* Configure User Button pin as input */
|
|
GPIO_InitStructure.GPIO_Pin = USERBUTTON_GPIO_PIN;
|
|
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;
|
|
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
|
|
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_40MHz;
|
|
GPIO_Init( USERBUTTON_GPIO_PORT, &GPIO_InitStructure );
|
|
|
|
/* Select User Button pin as input source for EXTI Line */
|
|
SYSCFG_EXTILineConfig( EXTI_PortSourceGPIOA, EXTI_PinSource0 );
|
|
|
|
/* Configure EXT1 Line 0 in interrupt mode trigged on Rising edge */
|
|
EXTI_InitStructure.EXTI_Line = EXTI_Line0 ; /* PA0 for User button AND IDD_WakeUP */
|
|
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
|
|
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising;
|
|
EXTI_InitStructure.EXTI_LineCmd = ENABLE;
|
|
EXTI_Init( &EXTI_InitStructure );
|
|
|
|
/* Enable and set EXTI0 Interrupt to the lowest priority */
|
|
NVIC_InitStructure.NVIC_IRQChannel = EXTI0_IRQn;
|
|
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = configLIBRARY_LOWEST_INTERRUPT_PRIORITY;
|
|
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
|
|
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
|
|
NVIC_Init( &NVIC_InitStructure );
|
|
|
|
/* Configure the LED_pin as output push-pull for LD3 & LD4 usage */
|
|
GPIO_InitStructure.GPIO_Pin = LD_GREEN_GPIO_PIN | LD_BLUE_GPIO_PIN;
|
|
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
|
|
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
|
|
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
|
|
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz;
|
|
GPIO_Init( LD_GPIO_PORT, &GPIO_InitStructure );
|
|
|
|
/* Force a low level on LEDs */
|
|
GPIO_LOW( LD_GPIO_PORT, LD_GREEN_GPIO_PIN );
|
|
GPIO_LOW( LD_GPIO_PORT, LD_BLUE_GPIO_PIN );
|
|
}
|
|
/*-----------------------------------------------------------*/
|
|
|
|
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()). */
|
|
}
|
|
/*-----------------------------------------------------------*/
|
|
|
|
void vAssertCalled( unsigned long ulLine, const char * const pcFileName )
|
|
{
|
|
volatile unsigned long ulSetToNonZeroInDebuggerToContinue = 0;
|
|
|
|
/* Parameters are not used. */
|
|
( void ) ulLine;
|
|
( void ) pcFileName;
|
|
|
|
taskENTER_CRITICAL();
|
|
{
|
|
while( ulSetToNonZeroInDebuggerToContinue == 0 )
|
|
{
|
|
/* Use the debugger to set ulSetToNonZeroInDebuggerToContinue to a
|
|
non zero value to step out of this function to the point that raised
|
|
this assert(). */
|
|
__asm volatile( "NOP" );
|
|
__asm volatile( "NOP" );
|
|
}
|
|
}
|
|
taskEXIT_CRITICAL();
|
|
}
|
|
|