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STM32CubeWL/Projects/NUCLEO-WL55JC/Applications/FreeRTOS/FreeRTOS_Semaphore/Src/main.c

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/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file FreeRTOS/FreeRTOS_Semaphore/Src/main.c
* @author MCD Application Team
* @brief Main program body
******************************************************************************
* @attention
*
* Copyright (c) 2020 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.
*
******************************************************************************
*/
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "cmsis_os.h"
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
/* USER CODE END Includes */
/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */
/* USER CODE END PTD */
/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
/* USER CODE END PD */
/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */
#define semtstSTACK_SIZE configMINIMAL_STACK_SIZE
/* USER CODE END PM */
/* Private variables ---------------------------------------------------------*/
/* Definitions for SEM_Thread1 */
osThreadId_t SEM_Thread1Handle;
const osThreadAttr_t SEM_Thread1_attributes = {
.name = "SEM_Thread1",
.priority = (osPriority_t) osPriorityNormal,
.stack_size = 128 * 4
};
/* Definitions for SEM_Thread2 */
osThreadId_t SEM_Thread2Handle;
const osThreadAttr_t SEM_Thread2_attributes = {
.name = "SEM_Thread2",
.priority = (osPriority_t) osPriorityLow,
.stack_size = 128 * 4
};
/* Definitions for osSemaphore */
osSemaphoreId_t osSemaphoreHandle;
const osSemaphoreAttr_t osSemaphore_attributes = {
.name = "osSemaphore"
};
/* USER CODE BEGIN PV */
__IO uint32_t OsStatus = 0;
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
void SemaphoreThread1(void *argument);
void SemaphoreThread2(void *argument);
/* USER CODE BEGIN PFP */
/* USER CODE END PFP */
/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
/* USER CODE END 0 */
/**
* @brief The application entry point.
* @retval int
*/
int main(void)
{
/* USER CODE BEGIN 1 */
/* USER CODE END 1 */
/* MCU Configuration--------------------------------------------------------*/
/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
HAL_Init();
/* USER CODE BEGIN Init */
/* USER CODE END Init */
/* Configure the system clock */
SystemClock_Config();
/* USER CODE BEGIN SysInit */
/* Initialize LEDs */
BSP_LED_Init(LED1);
BSP_LED_Init(LED2);
/* USER CODE END SysInit */
/* Initialize all configured peripherals */
/* USER CODE BEGIN 2 */
/* USER CODE END 2 */
/* Init scheduler */
osKernelInitialize();
/* USER CODE BEGIN RTOS_MUTEX */
/* USER CODE END RTOS_MUTEX */
/* Create the semaphores(s) */
/* creation of osSemaphore */
osSemaphoreHandle = osSemaphoreNew(1, 1, &osSemaphore_attributes);
/* USER CODE BEGIN RTOS_SEMAPHORES */
/* USER CODE END RTOS_SEMAPHORES */
/* USER CODE BEGIN RTOS_TIMERS */
/* USER CODE END RTOS_TIMERS */
/* USER CODE BEGIN RTOS_QUEUES */
/* USER CODE END RTOS_QUEUES */
/* Create the thread(s) */
/* creation of SEM_Thread1 */
SEM_Thread1Handle = osThreadNew(SemaphoreThread1, (void *) osSemaphoreHandle, &SEM_Thread1_attributes);
/* creation of SEM_Thread2 */
SEM_Thread2Handle = osThreadNew(SemaphoreThread2, (void *) osSemaphoreHandle, &SEM_Thread2_attributes);
/* USER CODE BEGIN RTOS_THREADS */
/* USER CODE END RTOS_THREADS */
/* USER CODE BEGIN RTOS_EVENTS */
/* add events, ... */
/* USER CODE END RTOS_EVENTS */
/* Start scheduler */
osKernelStart();
/* We should never get here as control is now taken by the scheduler */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
}
/* USER CODE END 3 */
}
/**
* @brief System Clock Configuration
* @retval None
*/
void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct = {0};
RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
/** Configure the main internal regulator output voltage
*/
__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
/** Initializes the CPU, AHB and APB buses clocks
*/
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_MSI;
RCC_OscInitStruct.MSIState = RCC_MSI_ON;
RCC_OscInitStruct.MSICalibrationValue = RCC_MSICALIBRATION_DEFAULT;
RCC_OscInitStruct.MSIClockRange = RCC_MSIRANGE_11;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{
Error_Handler();
}
/** Configure the SYSCLKSource, HCLK, PCLK1 and PCLK2 clocks dividers
*/
RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK3|RCC_CLOCKTYPE_HCLK
|RCC_CLOCKTYPE_SYSCLK|RCC_CLOCKTYPE_PCLK1
|RCC_CLOCKTYPE_PCLK2;
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_MSI;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
RCC_ClkInitStruct.AHBCLK3Divider = RCC_SYSCLK_DIV1;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
{
Error_Handler();
}
}
/* USER CODE BEGIN 4 */
/* USER CODE END 4 */
/* USER CODE BEGIN Header_SemaphoreThread1 */
/**
* @brief Function implementing the SEM_Thread1 thread.
* @param argument: Not used
* @retval None
*/
/* USER CODE END Header_SemaphoreThread1 */
void SemaphoreThread1(void *argument)
{
/* USER CODE BEGIN 5 */
uint32_t count = 0;
osSemaphoreId_t semaphore = (osSemaphoreId_t) argument;
/* Infinite loop */
for (;;)
{
if (semaphore != NULL)
{
OsStatus = osSemaphoreAcquire(semaphore, osWaitForever);
/* Try to obtain the semaphore */
if (OsStatus == osOK)
{
count = osKernelGetTickCount() + 5000;
/* Toggle LED1 every 200 ms for 5 seconds */
while (count > osKernelGetTickCount())
{
/* Toggle LED1 */
BSP_LED_Toggle(LED1);
/* Delay 200 ms */
osDelay(200);
}
/* Turn off LED1*/
BSP_LED_Off(LED1);
/* Release the semaphore */
OsStatus = osSemaphoreRelease(semaphore);
/* Suspend ourseleves to execute thread 2 (lower priority) */
OsStatus = osThreadSuspend(SEM_Thread1Handle);
}
}
}
/* USER CODE END 5 */
}
/* USER CODE BEGIN Header_SemaphoreThread2 */
/**
* @brief Function implementing the SEM_Thread2 thread.
* @param argument: Not used
* @retval None
*/
/* USER CODE END Header_SemaphoreThread2 */
void SemaphoreThread2(void *argument)
{
/* USER CODE BEGIN SemaphoreThread2 */
uint32_t count = 0;
osSemaphoreId_t semaphore = (osSemaphoreId_t) argument;
/* Infinite loop */
for (;;)
{
if (semaphore != NULL)
{
/* Try to obtain the semaphore */
OsStatus = osSemaphoreAcquire(semaphore, osWaitForever);
{
/* Resume Thread 1 (higher priority)*/
OsStatus = osThreadResume(SEM_Thread1Handle);
count = osKernelGetTickCount() + 5000;
/* Toggle LED2 every 200 ms for 5 seconds*/
while (count > osKernelGetTickCount())
{
BSP_LED_Toggle(LED2);
osDelay(200);
}
/* Turn off LED2 */
BSP_LED_Off(LED2);
/* Release the semaphore to unblock Thread 1 (higher priority) */
OsStatus = osSemaphoreRelease(semaphore);
}
}
}
/* USER CODE END SemaphoreThread2 */
}
/**
* @brief Period elapsed callback in non blocking mode
* @note This function is called when TIM17 interrupt took place, inside
* HAL_TIM_IRQHandler(). It makes a direct call to HAL_IncTick() to increment
* a global variable "uwTick" used as application time base.
* @param htim : TIM handle
* @retval None
*/
void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)
{
/* USER CODE BEGIN Callback 0 */
/* USER CODE END Callback 0 */
if (htim->Instance == TIM17) {
HAL_IncTick();
}
/* USER CODE BEGIN Callback 1 */
/* USER CODE END Callback 1 */
}
/**
* @brief This function is executed in case of error occurrence.
* @retval None
*/
void Error_Handler(void)
{
/* USER CODE BEGIN Error_Handler_Debug */
/* User can add his own implementation to report the HAL error return state */
/* USER CODE END Error_Handler_Debug */
}
#ifdef USE_FULL_ASSERT
/**
* @brief Reports the name of the source file and the source line number
* where the assert_param error has occurred.
* @param file: pointer to the source file name
* @param line: assert_param error line source number
* @retval None
*/
void assert_failed(uint8_t *file, uint32_t line)
{
/* USER CODE BEGIN 6 */
/* User can add his own implementation to report the file name and line number,
tex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
/* Infinite loop */
while (1)
{}
/* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */
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