基于 STM32CubeMX 添加 RT-Thread 操作系统组件(十三）- 邮箱

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《软件定时器》

 

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;
   /* 定义邮箱控制块 */
   static rt_mailbox_t test_mail = RT_NULL;
   
   /* 变量声明  */
   char test_str1[] = "this is a mail test 1";/* 邮箱消息 test1 */
   char test_str2[] = "this is a mail test 2";/* 邮箱消息 test2 */
   
   /* 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 email message experiment!\n");
   	rt_kprintf("Press K1 | K2 for mailbox experiment test!\n");
   	/* 创建一个邮箱 */
   	test_mail = rt_mb_create("test_mail", /* 邮箱名字 */
   						10, /* 邮箱大小 */
   						RT_IPC_FLAG_FIFO);/* 信号量模式 FIFO(0x00)*/
   						if (test_mail != RT_NULL)
   						rt_kprintf("Email 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)
   {
   	rt_err_t uwRet = RT_EOK;
   	char *r_str;
   	/* 线程都是一个无限循环，不能返回 */
   	while (1) {
   		/* 等待接邮箱消息 */
   		uwRet = rt_mb_recv(test_mail, /* 邮箱对象句柄 */
   					(rt_uint32_t*)&r_str, /* 接收邮箱消息 */
   					RT_WAITING_FOREVER);/* 指定超时事件,一直等 */
   		if (RT_EOK == uwRet) { /* 如果接收完成并且正确 */
   			rt_kprintf ( "The contents of the mailbox are:%s\n\n",r_str);
   			HAL_GPIO_TogglePin(LED1_GPIO_Port, LED1_Pin);//LED1 反转
   		} else
   		rt_kprintf ( "Error receiving email! Error code is 0x%x\n",uwRet);
   	}
   }
   
   static void send_thread_entry(void* parameter)
   {
   	rt_err_t uwRet = RT_EOK;
   	/* 线程都是一个无限循环，不能返回 */
   	while (1) {
   		//如果 KEY1 被单击
   		if ( HAL_GPIO_ReadPin(KEY1_GPIO_Port,KEY1_Pin) == GPIO_PIN_SET ) {
   		rt_kprintf ( "KEY1 is clicked\n" );
   		/* 发送一个邮箱消息 1 */
   		uwRet = rt_mb_send(test_mail,(rt_uint32_t)&test_str1);
   		if (RT_EOK == uwRet)
   			rt_kprintf ( "The email message has been sent successfully\n" );
   		else
   			rt_kprintf ( "The mailbox message failed to send\n" );
   		}
   		//如果 KEY2 被单击
   		
   		if ( HAL_GPIO_ReadPin(KEY2_GPIO_Port,KEY2_Pin) == GPIO_PIN_SET ) {
   			rt_kprintf ( "KEY2 is clicked\n" );
   		/* 发送一个邮箱 2 */
   		uwRet = rt_mb_send(test_mail,(rt_uint32_t)&test_str2);
   		if (RT_EOK == uwRet)
   			rt_kprintf ( "The email message has been sent successfully\n" );
   		else
   			rt_kprintf ( "The mailbox message failed to send\n" );
   		}
   		rt_thread_delay(20); //每 20ms 扫描一次
   	}
   }
   
   
   

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​​​​​​​