 diff --git NuttX/nuttx/arch/arm/src/stm32/stm32_serial.c NuttX/nuttx/arch/arm/src/stm32/stm32_serial.c
-index 644c810..80bb69a 100644
+index 644c810..aef3fe1 100644
 --- NuttX/nuttx/arch/arm/src/stm32/stm32_serial.c
 +++ NuttX/nuttx/arch/arm/src/stm32/stm32_serial.c
 @@ -208,7 +208,7 @@

   if (priv->iflow && (priv->rts_gpio != 0))
     {
       /* Assert/de-assert nRTS set it high resume/stop sending */
@@ -2346,7 +2300,9 @@ static bool up_rxflowcontrol(struct uart_dev_s *dev,
            * enable Rx interrupts.
            */
 

     }
 }
 #endif
@@ -2707,7 +2597,7 @@ static void up_dma_rxcallback(DMA_HANDLE handle, uint8_t status, void *arg)
  * Input Parameters:
  *
  *    cb - Returned to the driver. The driver version of the callback
