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

时间:2021-07-14 17:52:09

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:

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