【FreeRTOS】中断管理（二）

/**
  * @brief  EXTI line detection callbacks.
  * @param  GPIO_Pin Specifies the pins connected EXTI line
  * @retval None
  */
__weak void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(GPIO_Pin);
  /* NOTE: This function Should not be modified, when the callback is needed,
           the HAL_GPIO_EXTI_Callback could be implemented in the user file
   */
}

/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file           : main.c
  * @brief          : Main program body
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright (c) 2022 STMicroelectronics.
  * All rights reserved.</center></h2>
  *
  * This software component is licensed by ST under Ultimate Liberty license
  * SLA0044, the "License"; You may not use this file except in compliance with
  * the License. You may obtain a copy of the License at:
  *                             www.st.com/SLA0044
  *
  ******************************************************************************
  */
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "cmsis_os.h"
#include "usart.h"
#include "gpio.h"
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include <stdio.h>
/* 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 */
/* USER CODE END PM */
/* Private variables ---------------------------------------------------------*/
/* USER CODE BEGIN PV */
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
void MX_FREERTOS_Init(void);
/* USER CODE BEGIN PFP */
/* USER CODE END PFP */
/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
int fputc(int ch, FILE *f) 
{
  HAL_UART_Transmit(&huart1, (uint8_t *)&ch, 1, 0xFFFF);
  return ch;
}
TaskHandle_t  key_task_hand;
/*
* bit0: KEY0事件标志位
* bit1: KEY1事件标志位
* bit2: KEY2事件标志位
*/
#define KEY0_EVENT      (1<<0)
#define KEY1_EVENT      (1<<1)
#define KEY2_EVENT      (1<<2)
#define KEY_ALL_ENEVT   (KEY0_EVENT | KEY1_EVENT | KEY2_EVENT)
void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
{
    // xHigherPriorityTaskWoken must be initialised to pdFALSE.
    BaseType_t xHigherPriorityTaskWoken = pdFALSE;
    /* 按键0 */
    if(GPIO_Pin == KEY0_EXTI_Pin)
    {
        xTaskNotifyFromISR(key_task_hand, KEY0_EVENT, eSetBits, &xHigherPriorityTaskWoken);
    }
    /* 按键1 */
    else if(GPIO_Pin == KEY1_EXTI_Pin)
    {
        xTaskNotifyFromISR(key_task_hand, KEY1_EVENT, eSetBits, &xHigherPriorityTaskWoken);
    }
    /* 按键2 */
    else if(GPIO_Pin == KEY2_EXTI_Pin)
    {
        xTaskNotifyFromISR(key_task_hand, KEY2_EVENT, eSetBits, &xHigherPriorityTaskWoken);
    }
    if( xHigherPriorityTaskWoken == pdTRUE )
    {
        // If xHigherPriorityTaskWoken is now set to pdTRUE then a context switch should be requested.  
        portEND_SWITCHING_ISR( xHigherPriorityTaskWoken );
    }
}
static void AppKeyTask(void *par)
{
    uint32_t key;
    while(1)
    {
        xTaskNotifyWait(pdFALSE,    // 进入函数前不清空
            0xffffffff,     // 退出函数后清空所有位
            &key,         // 得到按键值
            portMAX_DELAY); // 永远等待
        
        if((key & KEY0_EVENT) != 0)
        {
            printf("事件1执行！\r\n");
        }
        
        else if((key & KEY1_EVENT) != 0)
        {
            printf("事件2执行！\r\n");
        }
        
        else if((key & KEY2_EVENT) != 0)
        {
            printf("事件3执行！\r\n");
        }
    }
}
static void AppLedTask(void *par)
{
    while(1)
    {
        HAL_GPIO_TogglePin(LED0_GPIO_Port, LED0_Pin);   
        vTaskDelay(100);
    }
}
static int AppBspInit()
{
    printf("[%s] [%s] BSP Init success\r\n", __DATE__, __TIME__);
    return 1;
}
static int AppCreatSems()
{
    printf("[%s] [%s] Creat Sems success\r\n", __DATE__, __TIME__);
    return 1;
}
static int AppCreatMutexs()
{
    printf("[%s] [%s] Creat Mutexs success\r\n", __DATE__, __TIME__);
    return 1;
}
static int AppCreatTimers()
{
    printf("[%s] [%s] Creat Tasks success\r\n", __DATE__, __TIME__);
    return 1;
}
static int AppCreatTasks()
{
    /* 创建key_task任务 */
    xTaskCreate((TaskFunction_t )AppKeyTask,"key",128,NULL,1, &key_task_hand);
  
    /* 创建led_task任务 */
    xTaskCreate((TaskFunction_t )AppLedTask,"led",128,NULL,2,NULL);
    printf("[%s] [%s] Creat Tasks success\r\n", __DATE__, __TIME__);
    return 1;
}
/* 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 */
  /* USER CODE END SysInit */
  /* Initialize all configured peripherals */
  MX_GPIO_Init();
  MX_USART1_UART_Init();
  /* USER CODE BEGIN 2 */
  
  printf("---------------WELCOME TO FREERTOS BEGIN------------------\r\n");
  /* 在实际开发中创建成功与否应该做相对应的判断 */
  
  /* 硬件初始化 */
  AppBspInit();
  /* 创建信号量 */
  AppCreatSems();
  /* 创建互斥量 */
  AppCreatMutexs();
  /* 创建软件定时器 */
  AppCreatTimers();
  /* 创建任务 */
  AppCreatTasks();
   
  printf("[%s] [%s] Start Kernel success\r\n", __DATE__, __TIME__);
  printf("---------------WELCOME TO FREERTOS END  ------------------\r\n");
  /* USER CODE END 2 */
  /* Init scheduler */
  osKernelInitialize();  /* Call init function for freertos objects (in freertos.c) */
  MX_FREERTOS_Init();
  /* 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 */
    printf("[%s] [%s] Start Kernel eRROR\r\n", __DATE__, __TIME__);
    return  -1;
  }
  /* 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_RCC_PWR_CLK_ENABLE();
  __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
  /** Initializes the RCC Oscillators according to the specified parameters
  * in the RCC_OscInitTypeDef structure.
  */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
  RCC_OscInitStruct.HSEState = RCC_HSE_ON;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
  RCC_OscInitStruct.PLL.PLLM = 4;
  RCC_OscInitStruct.PLL.PLLN = 168;
  RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
  RCC_OscInitStruct.PLL.PLLQ = 4;
  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_PLLCLK;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;
  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5) != HAL_OK)
  {
    Error_Handler();
  }
}
/* USER CODE BEGIN 4 */
/* USER CODE END 4 */
/**
  * @brief  Period elapsed callback in non blocking mode
  * @note   This function is called  when TIM2 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 == TIM2) {
    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) */
  /* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/