diff --git a/my_pro/myinfrared.c b/my_pro/myinfrared.c
index c821c10..9031a70 100644
--- a/my_pro/myinfrared.c
+++ b/my_pro/myinfrared.c
@@ -29,7 +29,7 @@ void snake_compare(rt_uint8_t key, rt_uint8_t repeat)
     rt_sprintf(tmp, "%02X", key);
     rt_atomic_store(&snake_pressed, snake_max + 1);
     // 上
-    if (rt_strcmp(tmp, "30") == 0 || rt_strcmp(tmp, "53") == 0)
+    if (repeat == 0 &&rt_strcmp(tmp, "30") == 0 || rt_strcmp(tmp, "53") == 0)
     {
         if (rt_atomic_load(&now_direction) != 2)
             rt_atomic_store(&now_direction, 0);
@@ -39,7 +39,7 @@ void snake_compare(rt_uint8_t key, rt_uint8_t repeat)
     }
         
     // 左
-    if (rt_strcmp(tmp, "E8") == 0 || rt_strcmp(tmp, "99") == 0)
+    if (repeat == 0 &&rt_strcmp(tmp, "E8") == 0 || rt_strcmp(tmp, "99") == 0)
     {
         if (rt_atomic_load(&now_direction) != 3)
             rt_atomic_store(&now_direction, 1);
@@ -48,7 +48,7 @@ void snake_compare(rt_uint8_t key, rt_uint8_t repeat)
     }
         
     // 下
-    if (rt_strcmp(tmp, "B0") == 0 || rt_strcmp(tmp, "4B") == 0)
+    if (repeat == 0 &&rt_strcmp(tmp, "B0") == 0 || rt_strcmp(tmp, "4B") == 0)
     {
         if (rt_atomic_load(&now_direction) != 0)
             rt_atomic_store(&now_direction, 2);
@@ -57,7 +57,7 @@ void snake_compare(rt_uint8_t key, rt_uint8_t repeat)
     }
         
     // 右
-    if (rt_strcmp(tmp, "68") == 0 || rt_strcmp(tmp, "83") == 0)
+    if (repeat == 0 &&rt_strcmp(tmp, "68") == 0 || rt_strcmp(tmp, "83") == 0)
     {
         if (rt_atomic_load(&now_direction) != 1)
             rt_atomic_store(&now_direction, 3);
diff --git a/my_pro/myproject.c b/my_pro/myproject.c
index 40a8416..df4f4f2 100644
--- a/my_pro/myproject.c
+++ b/my_pro/myproject.c
@@ -404,34 +404,34 @@ void cdc_entry(void *parameter)
     }
 }
 
-/* 用于接收消息的信号量 */
-static struct rt_semaphore rx_sem;
-/* 接收数据回调函数 */
-static rt_err_t uart_input(rt_device_t dev, rt_size_t size)
-{
-    /* 串口接收到数据后产生中断，调用此回调函数，然后发送接收信号量 */
-    rt_sem_release(&rx_sem);
+// /* 用于接收消息的信号量 */
+// static struct rt_semaphore rx_sem;
+// /* 接收数据回调函数 */
+// static rt_err_t uart_input(rt_device_t dev, rt_size_t size)
+// {
+//     /* 串口接收到数据后产生中断，调用此回调函数，然后发送接收信号量 */
+//     rt_sem_release(&rx_sem);
 
-    return RT_EOK;
-}
+//     return RT_EOK;
+// }
 
-static void serial_thread_entry(void *parameter)
-{
-    char ch[105];
+// static void serial_thread_entry(void *parameter)
+// {
+//     char ch[105];
 
-    while (1)
-    {
-        /* 从串口读取一个字节的数据，没有读取到则等待接收信号量 */
-        int Size;
-        while ((Size=rt_device_read(serial, -1, &ch, 104) )!= 1)
-        {
-            /* 阻塞等待接收信号量，等到信号量后再次读取数据 */
-            rt_sem_take(&rx_sem, RT_WAITING_FOREVER);
-        }
+//     while (1)
+//     {
+//         /* 从串口读取一个字节的数据，没有读取到则等待接收信号量 */
+//         int Size;
+//         while ((Size=rt_device_read(serial, -1, &ch, 104) )!= 1)
+//         {
+//             /* 阻塞等待接收信号量，等到信号量后再次读取数据 */
+//             rt_sem_take(&rx_sem, RT_WAITING_FOREVER);
+//         }
 
-        rt_kprintf("%s",ch);
-    }
-}
+//         rt_kprintf("%s",ch);
+//     }
+// }
 
 
 
@@ -465,24 +465,24 @@ void serial_init(void)
     /* step3：控制串口设备。通过控制接口传入命令控制字，与控制参数 */
     rt_device_control(serial, RT_DEVICE_CTRL_CONFIG, &config);
 
-    /* 以 DMA 接收及轮询发送方式打开串口设备 */
+    /* 以 中断 接收及轮询发送方式打开串口设备 */
     rt_device_open(serial, RT_DEVICE_FLAG_INT_RX);
-    /* 设置接收回调函数 */
-    rt_device_set_rx_indicate(serial, uart_input);
+    // /* 设置接收回调函数 */
+    // rt_device_set_rx_indicate(serial, uart_input);
     char str[] = "hello RTT\r\n";
     /* 发送字符串 */
     rt_device_write(serial, 0, str, (sizeof(str) - 1));
-     /* 创建 serial 线程 */
-    rt_thread_t thread = rt_thread_create("serial", serial_thread_entry, 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("serial Thread Create Failed!\n");
-    }
+    //  /* 创建 serial 线程 */
+    // rt_thread_t thread = rt_thread_create("serial", serial_thread_entry, 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("serial Thread Create Failed!\n");
+    // }
 }
 void mqt_init(void)
 {