使用RT-Stduio建立f429工程，使用UART2输出乱码？

发布于 2020-03-28 22:35:21 浏览：1170 订阅该版

首先在board.h中开启串口2的宏定义配置引脚
#define BSP_USING_UART1
#define BSP_USING_UART2

#if defined(BSP_USING_UART1)
#define UART1_TX_PORT GPIOA
#define UART1_RX_PORT GPIOA
#define UART1_TX_PIN GPIO_PIN_9
#define UART1_RX_PIN GPIO_PIN_10
#endif
#if defined(BSP_USING_UART2)
#define UART2_TX_PORT GPIOA
#define UART2_RX_PORT GPIOA
#define UART2_TX_PIN GPIO_PIN_2
#define UART2_RX_PIN GPIO_PIN_3
#endif
在main函数中向uart2打印输出，有输出但是乱码，调整了串口接收的波特率2400~115200、奇偶校验都不能正常显示，有人遇到过吗？
[图片]()
int main(void)
{
 int count = 1;
	rt_err_t ret = RT_EOK;
 char uart_name[RT_NAME_MAX];
 char str[] = "hello RT-Thread! ";

rt_strncpy(uart_name, SAMPLE_UART_NAME, RT_NAME_MAX);

/* 查找系统中的串口设备 */
 serial = rt_device_find(uart_name);
 if (!serial)
 {
 rt_kprintf("find %s failed! ", uart_name);
 return RT_ERROR;
 }
	rt_kprintf("find %s OK! ", uart_name);
 /* 初始化信号量 */
 rt_sem_init(&rx_sem, "rx_sem", 0, RT_IPC_FLAG_FIFO);
 /* 以中断接收及轮询发送模式打开串口设备 */
 ret = rt_device_open(serial, RT_DEVICE_FLAG_INT_RX);
 rt_kprintf("rt_device_open %s %d! ", ret, uart_name);
 /* 设置接收回调函数 */
 rt_device_set_rx_indicate(serial, uart_rx_ind);

/* 创建 serial 线程 */
 rt_thread_t thread = rt_thread_create("serial", (void (*)(void *parameter))data_parsing, RT_NULL, 1024, 25, 10);
 /* 创建成功则启动线程 */
 if (thread != RT_NULL)
 {
 rt_thread_startup(thread);
 }
 else {
 rt_kprintf("rt_thread_startup %s failed! ", uart_name);
 }
	
 /* set LED0 pin mode to output */
 rt_pin_mode(LED0_PIN, PIN_MODE_OUTPUT);
	
 rt_thread_init(&oled,"oled",RT_OLED_Entry,RT_NULL,&OLED_stack[0],sizeof(OLED_stack),THREAD_PRIORITY-1, THREAD_TIMESLICE); 
 rt_thread_startup(&oled);

while (count++)
 {
 /* set LED0 pin level to high or low */
 rt_pin_write(LED0_PIN, count % 2);
 //LOG_D("Hello RT-Thread!");
 /* 发送字符串 */
 	rt_device_write(serial, 0, str, (sizeof(str) - 1));
 //rt_kprintf("Hello RT-Thread!!! ", uart_name);
 rt_thread_mdelay(1000);
 }

return RT_EOK;
}

![uart.png](https://oss-club.rt-thread.org/uploads/202003/28/223500v0m0typ0dpbd7ey0.png)