Fix UART error callback (clear flags and restart receive IT) (2/2)

Signed-off-by: Frederic Pillon <[email protected]>

Author: fpistm

cores/arduino/stm32/uart.c

@@ -784,16 +784,15 @@ void HAL_UART_TxCpltCallback(UART_HandleTypeDef *huart)
   */
 void HAL_UART_ErrorCallback(UART_HandleTypeDef *huart)
 {
-  volatile uint32_t tmpval;
 #if defined(STM32F1xx) || defined(STM32F2xx) || defined(STM32F4xx) || defined(STM32L1xx)
   if (__HAL_UART_GET_FLAG(huart, UART_FLAG_PE) != RESET) {
-    tmpval = huart->Instance->DR; /* Clear PE flag */
+    __HAL_UART_CLEAR_PEFLAG(huart); /* Clear PE flag */
   } else if (__HAL_UART_GET_FLAG(huart, UART_FLAG_FE) != RESET) {
-    tmpval = huart->Instance->DR; /* Clear FE flag */
+    __HAL_UART_CLEAR_FEFLAG(huart); /* Clear FE flag */
   } else if (__HAL_UART_GET_FLAG(huart, UART_FLAG_NE) != RESET) {
-    tmpval = huart->Instance->DR; /* Clear NE flag */
+    __HAL_UART_CLEAR_NEFLAG(huart); /* Clear NE flag */
   } else if (__HAL_UART_GET_FLAG(huart, UART_FLAG_ORE) != RESET) {
-    tmpval = huart->Instance->DR; /* Clear ORE flag */
+    __HAL_UART_CLEAR_OREFLAG(huart); /* Clear ORE flag */
   }
 #else
   if (__HAL_UART_GET_FLAG(huart, UART_FLAG_PE) != RESET) {
@@ -814,7 +813,6 @@ void HAL_UART_ErrorCallback(UART_HandleTypeDef *huart)
       HAL_UART_Receive_IT(uart_handlers[obj->index], &(obj->recv), 1);
     }
   }
-  UNUSED(tmpval);
 }
 
 /**