diff --git a/STM32F4xx_HAL_Driver/Inc/stm32f4xx_hal_uart.h b/STM32F4xx_HAL_Driver/Inc/stm32f4xx_hal_uart.h
index e6ce82f..47fc90b 100644
--- a/STM32F4xx_HAL_Driver/Inc/stm32f4xx_hal_uart.h
+++ b/STM32F4xx_HAL_Driver/Inc/stm32f4xx_hal_uart.h
@@ -210,6 +210,15 @@ typedef struct __UART_HandleTypeDef
   void (* MspDeInitCallback)(struct __UART_HandleTypeDef *huart);         /*!< UART Msp DeInit callback              */
 #endif  /* USE_HAL_UART_REGISTER_CALLBACKS */
 
+  uint16_t USR_DMARxSize;  //
+
+  uint8_t  USR_UartITRxing;
+  uint8_t *USR_UartITRxBuf;
+  uint8_t  USR_UartITRxBufCache;
+  int32_t  USR_UartITRxBufSize;
+  int32_t  USR_UartITRxOff;
+  uint32_t USR_UartITLastRxTicket;
+
 } UART_HandleTypeDef;
 
 #if (USE_HAL_UART_REGISTER_CALLBACKS == 1)