【iCore4 双核心板_ARM】例程四：USART实验——通过命令控制LED

实验原理：

　　开发板上自带一片CH340芯片，完成本实验电脑需要安装CH340驱动，

CH340的TXD连接STM32的GPIO（PXC7），CH340的RXD连接STM32的

GPIO（PC6），通过串口发送命令控制LED的亮灭。串口命令如下：

LED_RED_ON\CR\LF---------------------LED红灯亮
LED_RED_OFF\CR\LF-------------------LED红灯灭
LED_BLUE_ON\CR\LF-------------------LED蓝灯亮
LED_BLUE_OFF\CR\LF------------------LED蓝灯灭
LED_GREEN_ON\CR\LF-----------------LED绿灯亮
LED_GREEN_OFF\CR\LF---------------LED绿灯灭

实验现象：

　　打开串口软件通过串口输入相应的命令，控制LED的状态。

int main(void)
{

  /* USER CODE BEGIN 1 */
    int i;
    char buffer[20];
  /* 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_USART6_UART_Init();

  /* USER CODE BEGIN 2 */
    usart6.initialize(9600);                                                                                          //´®¿Ú²¨ÌØÉèÖÃ
    usart6.printf("Hello, I am iCore4!\r\n");                                                            //´®¿ÚÐÅÏ¢Êä³ö 

  /* USER CODE END 2 */

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

  /* USER CODE BEGIN 3 */
        if(usart6.receive_ok_flag){                                          //½ÓÊÕÍê³É
            usart6.receive_ok_flag = 0;
            for(i = 0;i < 20;i++){
                buffer[i] = tolower(usart6.receive_buffer[i]);
            }
            
            if(memcmp(buffer,"led_red_on",strlen("led_red_on")) == 0){
                LED_RED_ON;
                usart6.printf("ok!\r\n");
            }
            if(memcmp(buffer,"led_red_off",strlen("led_red_off")) == 0){
                LED_RED_OFF;
                usart6.printf("ok!\r\n");
            }    
            if(memcmp(buffer,"led_green_on",strlen("led_green_on")) == 0){
                LED_GREEN_ON;
                usart6.printf("ok!\r\n");
            }    
            if(memcmp(buffer,"led_green_off",strlen("led_green_off")) == 0){
                LED_GREEN_OFF;
                usart6.printf("ok!\r\n");
            }    
            if(memcmp(buffer,"led_blue_on",strlen("led_blue_on")) == 0){
                LED_BLUE_ON;
                usart6.printf("ok!\r\n");
            }    
            if(memcmp(buffer,"led_blue_off",strlen("led_blue_off")) == 0){
                LED_BLUE_OFF;
                usart6.printf("ok!\r\n");
            }                
        }
  }
  /* USER CODE END 3 */

}

 

源代码下载链接：

链接：http://pan.baidu.com/s/1pLbnxqV 密码：a849

iCore4链接：