/**
@page FreeRTOS_Signal FreeRTOS Signal example
@verbatim
******************************************************************************
* @file FreeRTOS/FreeRTOS_Signal/readme.txt
* @author MCD Application Team
* @brief Description of the FreeRTOS Signal example.
******************************************************************************
* @attention
*
* Copyright (c) 2016 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
@endverbatim
@par Application Description
How to perform thread signaling using CMSIS RTOS API.
This example creates three threads with the same priority.
Thread1 calls osSignalWait to wait for a signal that sets bit0, then toggles LED1
Thread2 calls osSignalWait to wait for a signal that sets bit1 and bit2, then toggles LED2
Thread3 performs the following actions:
- calls osSetSignal to send a signal with bit0 to Thread1
- delay for 500ms
- calls osSetSignal to send a signal with bit1 and bit2 to Thread2
- delay for 500ms
As a result, LEDs 1 and 2 show the following behaviour:
- LED1 On, delay 500ms
- LED2 On, delay 500ms
- LED1 Off, delay 500ms
- LED2 off, delay 500ms
- loop-back
@note Care must be taken when using HAL_Delay(), this function provides accurate
delay (in milliseconds) based on variable incremented in HAL time base ISR.
This implies that if HAL_Delay() is called from a peripheral ISR process, then
the HAL time base interrupt must have higher priority (numerically lower) than
the peripheral interrupt. Otherwise the caller ISR process will be blocked.
To change the HAL time base interrupt priority you have to use HAL_NVIC_SetPriority()
function.
@note The application needs to ensure that the HAL time base is always set to 1 millisecond
to have correct HAL operation.
@note The FreeRTOS heap size configTOTAL_HEAP_SIZE defined in FreeRTOSConfig.h is set accordingly to the
OS resources memory requirements of the application with +10% margin and rounded to the upper Kbyte boundary.
For more details about FreeRTOS implementation on STM32Cube, please refer to UM1722 "Developing Applications
on STM32Cube with RTOS".
@par Directory contents
- FreeRTOS/FreeRTOS_Signal/Src/main.c Main program
- FreeRTOS/FreeRTOS_Signal/Src/stm32f3xx_hal_timebase_tim.c HAL timebase file
- FreeRTOS/FreeRTOS_Signal/Src/stm32f3xx_it.c Interrupt handlers
- FreeRTOS/FreeRTOS_Signal/Src/system_stm32f3xx.c STM32F3xx system clock configuration file
- FreeRTOS/FreeRTOS_Signal/Inc/main.h Main program header file
- FreeRTOS/FreeRTOS_Signal/Inc/stm32f3xx_hal_conf.h HAL Library Configuration file
- FreeRTOS/FreeRTOS_Signal/Inc/stm32f3xx_it.h Interrupt handlers header file
- FreeRTOS/FreeRTOS_Signal/Inc/FreeRTOSConfig.h FreeRTOS Configuration file
@par Hardware and Software environment
- This example runs on STM32F373xC devices.
- This example has been tested with STM32373C-EVAL RevB board and can be
easily tailored to any other supported device and development board.
@par How to use it ?
In order to make the program work, you must do the following:
- Open your preferred toolchain
- Rebuild all files and load your image into target memory
- Run the example
*/
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