main_stm32f4_freertos_blink.c

#include "main.h"
#include "cmsis_os.h"
#include "stdbool.h"
osThreadId defaultTaskHandle;
osThreadId btn_1Handle;
osThreadId btn_2Handle;

void SystemClock_Config(void);
static void MX_GPIO_Init(void);
void StartDefaultTask(void const * argument);
void StartTask02(void const * argument);
void StartTask03(void const * argument);

int main(void)
{
  HAL_Init();

  SystemClock_Config();

  MX_GPIO_Init();
  osThreadDef(defaultTask, StartDefaultTask, osPriorityIdle, 0, 128);
  defaultTaskHandle = osThreadCreate(osThread(defaultTask), NULL);

  osThreadDef(btn_1, StartTask02, osPriorityIdle, 0, 128);
  btn_1Handle = osThreadCreate(osThread(btn_1), NULL);

  osThreadDef(btn_2, StartTask03, osPriorityIdle, 0, 128);
  btn_2Handle = osThreadCreate(osThread(btn_2), NULL);

  osKernelStart();

  while (1)
  {
  }
}

void SystemClock_Config(void)
{
  RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};

  __HAL_RCC_PWR_CLK_ENABLE();
  __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
  RCC_OscInitStruct.HSIState = RCC_HSI_ON;
  RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  {
    Error_Handler();
  }
  /** Initializes the CPU, AHB and APB buses clocks
  */
  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                              |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_HSI;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;

  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0) != HAL_OK)
  {
    Error_Handler();
  }
}

/**
  * @brief GPIO Initialization Function
  * @param None
  * @retval None
  */
static void MX_GPIO_Init(void)
{
  GPIO_InitTypeDef GPIO_InitStruct = {0};

  /* GPIO Ports Clock Enable */
  __HAL_RCC_GPIOA_CLK_ENABLE();
  __HAL_RCC_GPIOD_CLK_ENABLE();
  __HAL_RCC_GPIOB_CLK_ENABLE();

  /*Configure GPIO pin Output Level */
  HAL_GPIO_WritePin(GPIOD, GPIO_PIN_12|GPIO_PIN_13|GPIO_PIN_14|GPIO_PIN_15, GPIO_PIN_RESET);

  /*Configure GPIO pin : PA0 */
  GPIO_InitStruct.Pin = GPIO_PIN_0;
  GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

  /*Configure GPIO pins : PD12 PD13 PD14 PD15 */
  GPIO_InitStruct.Pin = GPIO_PIN_12|GPIO_PIN_13|GPIO_PIN_14|GPIO_PIN_15;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
  HAL_GPIO_Init(GPIOD, &GPIO_InitStruct);

}

void StartDefaultTask(void const * argument)
{
	GPIO_PinState myPushButton;
	bool prev_button= false;
	bool task01 = false;
	for(;;)
	{
		myPushButton = HAL_GPIO_ReadPin(GPIOA, GPIO_PIN_0);
		if (myPushButton && prev_button==false) {
			HAL_GPIO_WritePin(GPIOD, GPIO_PIN_12|GPIO_PIN_13|GPIO_PIN_14|GPIO_PIN_15, GPIO_PIN_RESET);
			prev_button = true;

			if(task01==true) {
				osThreadSuspend(btn_1Handle);
				osThreadResume(btn_2Handle);
				task01 = false;
			}
			else {
				osThreadSuspend(btn_2Handle);
				osThreadResume(btn_1Handle);
				task01 = true;
			}
		}
		else if (myPushButton==false) {
			prev_button = false;
		}
		HAL_Delay(5);
	}
}
void StartTask02(void const * argument)
{
	  for(;;)
	  {
		  HAL_GPIO_TogglePin(GPIOD, GPIO_PIN_12|GPIO_PIN_14);
		  HAL_Delay(500);
	  }
}

void StartTask03(void const * argument)
{
	  for(;;)
	  {
		  HAL_GPIO_TogglePin(GPIOD, GPIO_PIN_13|GPIO_PIN_15);
		  HAL_Delay(1000);
	  }
}

void Error_Handler(void)
{
  /* USER CODE BEGIN Error_Handler_Debug */
  /* User can add his own implementation to report the HAL error return state */
  __disable_irq();
  while (1)
  {
  }
  /* 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,
     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
  /* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/