stm32裸机开发下利用MultiTimer多任务时间片询

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• 📌MultiTimerGithub地址：https://github.com/0x1abin/MultiTimer

• ✨这是一个类似Arduino平台上的Ticker库，如需阅读懂源码，起码需要有链表知识的储备，如果仅仅只是拿来使用，那就忽略具体实现的方法。

📑MultiTimer简介

MultiTimer 是一个软件定时器扩展模块，可无限扩展你所需的定时器任务，取代传统的标志位判断方式， 更优雅更便捷地管理程序的时间触发时序。

⛳使用注意事项说明

1. 定时器的时钟频率直接影响定时器的精确度，尽可能采用1ms/5ms/10ms这几个精度较高的tick;
2. 定时器的回调函数内不应执行耗时操作，否则可能因占用过长的时间，导致其他定时器无法正常超时；
3. 由于定时器的回调函数是在 MultiTimerYield() 内执行的，需要注意栈空间的使用不能过大，否则可能会导致栈溢出。

基于stm32f103,使用stm32cubemx配置的工程案例

• 🔖为了省事，直接将其驱动文件分别拷贝到项目MultiTimer_Task\Core\Inc和MultiTimer_Task\Core\Src下。
• 🌿在所创建好的工程中添加源文件（MultiTimer.c）,右键其文件属性-设置为c源文件。
  

• 🌿main.c程序示例代码

/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file           : main.c
  * @brief          : Main program body
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2023 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 "usart.h"
#include "gpio.h"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include <stdio.h>
#include "MultiTimer.h"
/* USER CODE END Includes */

/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */

/* USER CODE END PTD */

/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
MultiTimer timer1;//创建任务对象
MultiTimer timer2;
MultiTimer timer3;
/* 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);
/* USER CODE BEGIN PFP */
uint64_t PlatformTicksGetFunc(void)
{
    return (uint64_t)HAL_GetTick();
}
/* USER CODE END PFP */

/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
void exampleTimer1Callback(MultiTimer* timer, void* userData)
{
    //回调函数1
    printf("[TASK1] Timer:%p callback-> %s.\r\n",  timer, (char*)userData);
    MultiTimerStart(timer, 1000, exampleTimer1Callback, userData);
    HAL_GPIO_TogglePin(GPIOE, GPIO_PIN_5);
}

void exampleTimer2Callback(MultiTimer* timer, void* userData)
{
    //回调函数2
    printf("[TASK2] Timer:%p callback-> %s.\r\n", timer, (char*)userData);
    HAL_GPIO_TogglePin(GPIOB, GPIO_PIN_5);
}

void exampleTimer3Callback(MultiTimer* timer, void* userData)
{
    //回调函数3
    printf("[TASK3] Timer:%p callback-> %s.\r\n", timer, (char*)userData);
    MultiTimerStart(timer, 4567, exampleTimer3Callback, userData);//初始化并启动Timer
    HAL_GPIO_TogglePin(GPIOE, GPIO_PIN_6);
}
/* 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 */
    MultiTimerInstall(PlatformTicksGetFunc);
    MultiTimerStart(&timer1, 1000, exampleTimer1Callback, "1000ms CYCLE timer");
    MultiTimerStart(&timer2, 5000, exampleTimer2Callback, "5000ms ONCE timer");
    MultiTimerStart(&timer3, 3456, exampleTimer3Callback, "3456ms delay start, 4567ms CYCLE timer");
    /* USER CODE END 2 */

    /* Infinite loop */
    /* USER CODE BEGIN WHILE */
    while(1)
    {
        /* USER CODE END WHILE */

        /* USER CODE BEGIN 3 */
        MultiTimerYield();
    }
    /* USER CODE END 3 */
}

/**
  * @brief System Clock Configuration
  * @retval None
  */
void SystemClock_Config(void)
{
    RCC_OscInitTypeDef RCC_OscInitStruct = {0};
    RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};

    /** 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.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
    RCC_OscInitStruct.HSIState = RCC_HSI_ON;
    RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
    RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
    RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;
    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_DIV2;
    RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;

    if(HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
    {
        Error_Handler();
    }
}

/* USER CODE BEGIN 4 */

/* USER CODE END 4 */

/**
  * @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 */
    __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 */

• 📜串口调试信息输出：
  

📚示例工程源码

• 🏳‍🌈基于STM32CubeMX配置的stm32f103vc工程示例代码

链接: https://pan.baidu.com/s/1KbhfdzvpuUklwqboo3bAZQ
提取码: bfkb