K210串口无法调用

发布于 2023-05-20 17:46:12 浏览：467 订阅该版

我写的代码没有反馈，串口没有数据，只有在我向串口发送hello的时候会反馈一个hello rtthread，当我只点亮LED的时候也可以正常点亮

```c
#include <rtthread.h>
#include "fpioa.h"
#include "gpiohs.h"
#include <uart.h>

#define LED_PIN     (0)
#define UART_DEVICE_NAME "uart1"

static rt_uint8_t led_status = 0;  // LED灯状态，0表示灭，1表示亮

static void uart_rx_thread_entry(void *parameter)
{
    struct rt_device *uart = rt_device_find(UART_DEVICE_NAME);
    rt_uint8_t ch;

/* 初始化GPIOHS */

while (1)
    {
        rt_device_read(uart, 0, &ch, 1);
        if (ch == '1')
        {

gpiohs_set_pin(LED_PIN, GPIO_PV_HIGH);
        }
        else if (ch == '2')
        {

gpiohs_set_pin(LED_PIN, GPIO_PV_LOW);
        }
        else
        {
            /* 其它字符，让LED闪烁三秒钟 */

gpiohs_set_pin(LED_PIN, GPIO_PV_HIGH);
            rt_thread_mdelay(3000);
            gpiohs_set_pin(LED_PIN, GPIO_PV_LOW);

}
    }
}

static void thread1_entry(void *parameter)
{
    while(1){
    gpiohs_set_pin(LED_PIN, GPIO_PV_HIGH);
    rt_thread_mdelay(3000);
    gpiohs_set_pin(LED_PIN, GPIO_PV_LOW);
    rt_thread_mdelay(3000);
    }
}

static void thread2_entry(void *parameter)
{
    while(1){
    gpiohs_set_pin(LED_PIN, GPIO_PV_HIGH);
    rt_thread_mdelay(200);
    gpiohs_set_pin(LED_PIN, GPIO_PV_LOW);
    rt_thread_mdelay(200);
    }
}
int main(void)
{

fpioa_set_function(34, FUNC_GPIOHS0);  // 将K210的IO34引脚映射到GPIOHS0
    gpiohs_set_drive_mode(LED_PIN, GPIO_DM_OUTPUT);

rt_thread_t thread1 = rt_thread_create("thread1", thread1_entry, RT_NULL, 512, 10, 10);
    if (thread1 != RT_NULL)
    {
        rt_thread_startup(thread1);
    }

rt_thread_t thread2 = rt_thread_create("thread2", thread2_entry, RT_NULL, 512, 20, 10);
    if (thread2 != RT_NULL)
    {
        rt_thread_startup(thread2);
    }
}
```