基于 STM32CubeMX 添加 RT-Thread 操作系统组件(十)- 互斥量

概述 

       本篇只要介绍这么使用STM32CubeMx工具添加RT-Thread操作系统组件,码代码的IDE是keil。介绍单线程SRAM静态内存使用。如果还不知道,这么使用STM32CubeMx工具添加RT-Thread操作系统组件,请移步到《基于 STM32CubeMX 添加 RT-Thread 操作系统组件(一)- 详细介绍操作步骤》文章阅读。好了,喝杯茶先^_^,继续前行。上一篇介绍关于《信号量》

一、STM32CubeMx配置       
       

二、KEIL IDE

  1. 在Application/User文件夹,新建app_rt_thread.c文件,并添加如下代码:
    #include "rtthread.h"
    #include "main.h"
    #include "stdio.h"
    #include "usart.h"
    
    
    
    /* 定义线程控制块 */
    static rt_thread_t receive_thread = RT_NULL;
    static rt_thread_t send_thread = RT_NULL;
    /* 定义互斥量控制块 */
    static rt_mutex_t test_mux = RT_NULL;
    /* 全局变量声明 */
    uint8_t ucValue [ 2 ] = { 0x00, 0x00 };
    /* 函数声明 */
    static void receive_thread_entry(void* parameter);
    static void send_thread_entry(void* parameter);
    
    
    
    int MX_RT_Thread_Init(void)
    {
    	rt_kprintf("This is an RTT mutex synchronization experiment!\n");
    	rt_kprintf("Synchronous success output success, otherwise output failure\n");
    	/* 创建一个互斥量 */
    	test_mux = rt_mutex_create("test_mux",RT_IPC_FLAG_PRIO);
    	if (test_mux != RT_NULL)
    		rt_kprintf("Mutex created successfully!\n\n");
    	/* 线程控制块指针 */
    	receive_thread = rt_thread_create( "receive", /* 线程名字 */
    				receive_thread_entry, /* 线程入口函数 */
    				RT_NULL, /* 线程入口函数参数 */
    				512, /* 线程栈大小 */
    				3, /* 线程的优先级 */
    				20); /* 线程时间片 */
    	/* 启动线程,开启调度 */
    	if (receive_thread != RT_NULL)
    		rt_thread_startup(receive_thread);
    	else
    		return -1;
    	/* 线程控制块指针 */
    	send_thread = rt_thread_create( "send", /* 线程名字 */
    				send_thread_entry, /* 线程入口函数 */
    				RT_NULL, /* 线程入口函数参数 */
    				512, /* 线程栈大小 */
    				2, /* 线程的优先级 */
    				20); /* 线程时间片 */
    	/* 启动线程,开启调度 */
    	if (send_thread != RT_NULL)
    		rt_thread_startup(send_thread);
    	else
    		return -1;
    }
    
    /*
    ************************************************************
    * 线程定义
    *********************************************************
    */
    static void receive_thread_entry(void* parameter)
    {
    	/* 线程都是一个无限循环,不能返回 */
    	while (1) {
    		rt_mutex_take(test_mux, /* 获取互斥量 */
    		RT_WAITING_FOREVER); /* 等待时间:一直等 */
    		if ( ucValue [ 0 ] == ucValue [ 1 ] ) {
    			rt_kprintf ( "Successful\n" );
    		} else {
    			rt_kprintf ( "Fail\n" );
    		}
    		rt_mutex_release( test_mux ); //释放互斥量
    		rt_thread_delay ( 1000 ); //每 1s 读一次
    	}
    }
    static void send_thread_entry(void* parameter)
    {
    	/* 线程都是一个无限循环,不能返回 */
    	while (1) {
    		rt_mutex_take(test_mux, /* 获取互斥量 */
    		RT_WAITING_FOREVER); /* 等待时间:一直等 */
    		ucValue [ 0 ] ++;
    		rt_thread_delay ( 100 ); /* 延时 100ms */
    		ucValue [ 1 ] ++;
    		rt_mutex_release(test_mux); //释放互斥号量
    		rt_thread_yield(); //放弃剩余时间片,进行一次线程切换
    	}
    }
    
    

     
  2. 在main.c文件添加如下代码:
    /* USER CODE END Header */
    
    /* Includes ------------------------------------------------------------------*/
    #include "main.h"
    #include "usart.h"
    #include "gpio.h"
    
    /* Private includes ----------------------------------------------------------*/
    /* USER CODE BEGIN Includes */
    
    /* USER CODE END Includes */
    
    /* Private typedef -----------------------------------------------------------*/
    /* USER CODE BEGIN PTD */
    extern int MX_RT_Thread_Init(void);
    /* 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);
    /* 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 */
    
      /* USER CODE END SysInit */
    
      /* Initialize all configured peripherals */
      MX_GPIO_Init();
      MX_USART1_UART_Init();
      /* USER CODE BEGIN 2 */
      MX_RT_Thread_Init();
      /* USER CODE END 2 */
    
      /* Infinite loop */
      /* USER CODE BEGIN WHILE */
      while (1)
      {
        /* USER CODE END WHILE */
    
        /* USER CODE BEGIN 3 */
      }
      /* USER CODE END 3 */
    }
  3. 自定义rt_hw_console_output()函数,在kservice.c文件添加中(重映射串口控制台到 rt_kprintf 函数)代码:
    #include "usart.h"
    .
    .
    .
    
    RT_WEAK void rt_hw_console_output(const char *str)
    {
        /* empty console output */
    	/* 进入临界段 */
    	rt_enter_critical();
    	/* 直到字符串结束 */
    	while (*str!='\0') {
    	/* 换行 */
    	if (*str=='\n') {
    		HAL_UART_Transmit(&huart1,(uint8_t *)'\r',1,1000);
    	}
    		HAL_UART_Transmit(&huart1,(uint8_t *)(str++),1,1000);
    	}
    	/* 退出临界段 */
    	rt_exit_critical();
    }

  4. 运行结果
        

    源码:git​​​​​​​

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转载自blog.csdn.net/qq_36075612/article/details/107628995