fix

src/App/main.c

@@ -18,6 +18,24 @@ foc_handle_t foc_handle;
 const char *data = "hello world\n";
 /* Function ------------------------------------------------------------------*/
 
+//#ifdef __GNUC__
+#pragma import(__use_no_semihosting)
+
+void _sys_exit(int x)
+{
+    x = x;
+}
+
+int _write(int fd, char *ptr, int len)
+{
+    HAL_UART_Transmit(&huart1, (uint8_t *)ptr, len, 0xFFFF);
+    // fflush(stdout);
+    return len;
+}
+
+//#endif
+
+
 /**
  * @brief  The application entry point.
  * @retval int
@@ -59,7 +77,8 @@ int main(void)
     while (1)
     {
         // 测试PWM输出
-        printf("direction is %d\n", hall_handle.direction);
+        HAL_UART_Transmit(&huart1, "a", 1, 0xFFFF);
+        printf("direction is %d\r\n", hall_handle.direction);
         led_ctrl(1);
         HAL_Delay(500);
         led_ctrl(0);
@@ -67,23 +86,6 @@ int main(void)
     }
 }
 
-#ifdef __GNUC__
-// #pragma import(__use_no_semihosting)
-
-// void _sys_exit(int x)
-// {
-//     x = x;
-// }
-
-int _write(int fd, char *ptr, int len)
-{
-    HAL_UART_Transmit(&huart1, (uint8_t *)ptr, len, 0xFFFF);
-    fflush(stdout);
-    return len;
-}
-
-#endif
-
 // /// 重定向c库函数printf到串口DEBUG_USART，重定向后可使用printf函数
 // int fputc(int ch, FILE *f)
 // {

src/Bsp/timer.c

@@ -358,3 +358,4 @@ void TIM3_IRQHandler(void)
         calc_hall_angle(&hall_handle, new_state);
     }
 }
+