Wait until UART ready

Core/Src/main.c

@@ -102,7 +102,7 @@ void uart_debug_print(const char *fmt, ...)
 
   if (len > 0)
   {
-    while (HAL_UART_GetState(&huart1) & HAL_UART_STATE_BUSY_TX);
+    while (huart1.gState != HAL_UART_STATE_READY);
     HAL_UART_Transmit(&huart1, (uint8_t*)buf, len, 100);
   }
 }
@@ -134,7 +134,6 @@ int main(void)
 
   /* MCU Configuration--------------------------------------------------------*/
 
-  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
   HAL_Init();
 
   /* USER CODE BEGIN Init */