gabriel della-monica
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Diff: targets/cmsis/TARGET_STM/TARGET_NUCLEO_F334R8/stm32f3xx_hal_uart.c
- Revision:
- 375:3d36234a1087
- Parent:
- 237:f3da66175598
--- a/targets/cmsis/TARGET_STM/TARGET_NUCLEO_F334R8/stm32f3xx_hal_uart.c Wed Oct 29 14:30:09 2014 +0000
+++ b/targets/cmsis/TARGET_STM/TARGET_NUCLEO_F334R8/stm32f3xx_hal_uart.c Thu Oct 30 09:15:07 2014 +0000
@@ -2,8 +2,8 @@
******************************************************************************
* @file stm32f3xx_hal_uart.c
* @author MCD Application Team
- * @version V1.0.1
- * @date 18-June-2014
+ * @version V1.1.0
+ * @date 12-Sept-2014
* @brief UART HAL module driver.
*
* This file provides firmware functions to manage the following
@@ -105,17 +105,24 @@
* @{
*/
-/** @defgroup UART
- * @brief HAL UART module driver
+/** @defgroup UART UART HAL module driver
+ * @brief UART HAL module driver
* @{
*/
#ifdef HAL_UART_MODULE_ENABLED
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
+/** @defgroup UART_Private_Constants UART Private Constants
+ * @{
+ */
#define HAL_UART_TXDMA_TIMEOUTVALUE 22000
#define UART_CR1_FIELDS ((uint32_t)(USART_CR1_M | USART_CR1_PCE | USART_CR1_PS | \
USART_CR1_TE | USART_CR1_RE | USART_CR1_OVER8))
+/**
+ * @}
+ */
+
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
@@ -125,14 +132,15 @@
static void UART_DMATxHalfCplt(DMA_HandleTypeDef *hdma);
static void UART_DMAError(DMA_HandleTypeDef *hdma);
static HAL_StatusTypeDef UART_Transmit_IT(UART_HandleTypeDef *huart);
+static HAL_StatusTypeDef UART_EndTransmit_IT(UART_HandleTypeDef *huart);
static HAL_StatusTypeDef UART_Receive_IT(UART_HandleTypeDef *huart);
-/* Private functions ---------------------------------------------------------*/
+/* Exported functions ---------------------------------------------------------*/
-/** @defgroup UART_Private_Functions
+/** @defgroup UART_Exported_Functions UART Exported Functions
* @{
*/
-/** @defgroup HAL_UART_Group1 Initialization/de-initialization functions
+/** @defgroup UART_Exported_Functions_Group1 Initialization and de-initialization functions
* @brief Initialization and Configuration functions
*
@verbatim
@@ -198,7 +206,7 @@
HAL_StatusTypeDef HAL_UART_Init(UART_HandleTypeDef *huart)
{
/* Check the UART handle allocation */
- if(huart == NULL)
+ if(huart == HAL_NULL)
{
return HAL_ERROR;
}
@@ -258,7 +266,7 @@
HAL_StatusTypeDef HAL_HalfDuplex_Init(UART_HandleTypeDef *huart)
{
/* Check the UART handle allocation */
- if(huart == NULL)
+ if(huart == HAL_NULL)
{
return HAL_ERROR;
}
@@ -318,7 +326,7 @@
HAL_StatusTypeDef HAL_LIN_Init(UART_HandleTypeDef *huart, uint32_t BreakDetectLength)
{
/* Check the UART handle allocation */
- if(huart == NULL)
+ if(huart == HAL_NULL)
{
return HAL_ERROR;
}
@@ -398,7 +406,7 @@
HAL_StatusTypeDef HAL_MultiProcessor_Init(UART_HandleTypeDef *huart, uint8_t Address, uint32_t WakeUpMethod)
{
/* Check the UART handle allocation */
- if(huart == NULL)
+ if(huart == HAL_NULL)
{
return HAL_ERROR;
}
@@ -461,7 +469,7 @@
HAL_StatusTypeDef HAL_UART_DeInit(UART_HandleTypeDef *huart)
{
/* Check the UART handle allocation */
- if(huart == NULL)
+ if(huart == HAL_NULL)
{
return HAL_ERROR;
}
@@ -518,7 +526,7 @@
* @}
*/
-/** @defgroup HAL_UART_Group2 IO operation functions
+/** @defgroup UART_Exported_Functions_Group2 Input and Output operation functions
* @brief UART Transmit/Receive functions
*
@verbatim
@@ -549,8 +557,6 @@
(+) HAL_UART_Transmit_IT()
(+) HAL_UART_Receive_IT()
(+) HAL_UART_IRQHandler()
- (+) UART_Transmit_IT()
- (+) UART_Receive_IT()
(#) No-Blocking mode API's with DMA are :
(+) HAL_UART_Transmit_DMA()
@@ -588,7 +594,7 @@
if((huart->State == HAL_UART_STATE_READY) || (huart->State == HAL_UART_STATE_BUSY_RX))
{
- if((pData == NULL ) || (Size == 0))
+ if((pData == HAL_NULL ) || (Size == 0))
{
return HAL_ERROR;
}
@@ -667,7 +673,7 @@
if((huart->State == HAL_UART_STATE_READY) || (huart->State == HAL_UART_STATE_BUSY_TX))
{
- if((pData == NULL ) || (Size == 0))
+ if((pData == HAL_NULL ) || (Size == 0))
{
return HAL_ERROR;
}
@@ -744,7 +750,7 @@
{
if((huart->State == HAL_UART_STATE_READY) || (huart->State == HAL_UART_STATE_BUSY_RX))
{
- if((pData == NULL ) || (Size == 0))
+ if((pData == HAL_NULL ) || (Size == 0))
{
return HAL_ERROR;
}
@@ -795,7 +801,7 @@
{
if((huart->State == HAL_UART_STATE_READY) || (huart->State == HAL_UART_STATE_BUSY_TX))
{
- if((pData == NULL ) || (Size == 0))
+ if((pData == HAL_NULL ) || (Size == 0))
{
return HAL_ERROR;
}
@@ -854,7 +860,7 @@
if((huart->State == HAL_UART_STATE_READY) || (huart->State == HAL_UART_STATE_BUSY_RX))
{
- if((pData == NULL ) || (Size == 0))
+ if((pData == HAL_NULL ) || (Size == 0))
{
return HAL_ERROR;
}
@@ -920,7 +926,7 @@
if((huart->State == HAL_UART_STATE_READY) || (huart->State == HAL_UART_STATE_BUSY_TX))
{
- if((pData == NULL ) || (Size == 0))
+ if((pData == HAL_NULL ) || (Size == 0))
{
return HAL_ERROR;
}
@@ -1058,12 +1064,12 @@
huart->Instance->CR3 &= ~USART_CR3_DMAR;
/* Abort the UART DMA tx channel */
- if(huart->hdmatx != NULL)
+ if(huart->hdmatx != HAL_NULL)
{
HAL_DMA_Abort(huart->hdmatx);
}
/* Abort the UART DMA rx channel */
- if(huart->hdmarx != NULL)
+ if(huart->hdmarx != HAL_NULL)
{
HAL_DMA_Abort(huart->hdmarx);
}
@@ -1156,6 +1162,12 @@
UART_Transmit_IT(huart);
}
+ /* UART in mode Transmitter (transmission end) -----------------------------*/
+ if((__HAL_UART_GET_IT(huart, UART_IT_TC) != RESET) &&(__HAL_UART_GET_IT_SOURCE(huart, UART_IT_TC) != RESET))
+ {
+ UART_EndTransmit_IT(huart);
+ }
+
}
@@ -1225,110 +1237,6 @@
return HAL_OK;
}
-
-
-/**
- * @brief DMA UART transmit process complete callback
- * @param hdma: DMA handle
- * @retval None
- */
-static void UART_DMATransmitCplt(DMA_HandleTypeDef *hdma)
-{
- UART_HandleTypeDef* huart = ( UART_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
- huart->TxXferCount = 0;
-
- /* Disable the DMA transfer for transmit request by setting the DMAT bit
- in the UART CR3 register */
- huart->Instance->CR3 &= (uint32_t)~((uint32_t)USART_CR3_DMAT);
-
- /* Wait for UART TC Flag */
- if(UART_WaitOnFlagUntilTimeout(huart, UART_FLAG_TC, RESET, HAL_UART_TXDMA_TIMEOUTVALUE) != HAL_OK)
- {
- /* Timeout Occured */
- huart->State = HAL_UART_STATE_TIMEOUT;
- HAL_UART_ErrorCallback(huart);
- }
- else
- {
- /* No Timeout */
- /* Check if a receive process is ongoing or not */
- if(huart->State == HAL_UART_STATE_BUSY_TX_RX)
- {
- huart->State = HAL_UART_STATE_BUSY_RX;
- }
- else
- {
- huart->State = HAL_UART_STATE_READY;
- }
- HAL_UART_TxCpltCallback(huart);
- }
-}
-
-/**
- * @brief DMA UART transmit process half complete callback
- * @param hdma : DMA handle
- * @retval None
- */
-static void UART_DMATxHalfCplt(DMA_HandleTypeDef *hdma)
-{
- UART_HandleTypeDef* huart = (UART_HandleTypeDef*)((DMA_HandleTypeDef*)hdma)->Parent;
-
- HAL_UART_TxHalfCpltCallback(huart);
-}
-
-/**
- * @brief DMA UART receive process complete callback
- * @param hdma: DMA handle
- * @retval None
- */
-static void UART_DMAReceiveCplt(DMA_HandleTypeDef *hdma)
-{
- UART_HandleTypeDef* huart = ( UART_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
- huart->RxXferCount = 0;
-
- /* Disable the DMA transfer for the receiver request by setting the DMAR bit
- in the UART CR3 register */
- huart->Instance->CR3 &= (uint32_t)~((uint32_t)USART_CR3_DMAR);
-
- /* Check if a transmit Process is ongoing or not */
- if(huart->State == HAL_UART_STATE_BUSY_TX_RX)
- {
- huart->State = HAL_UART_STATE_BUSY_TX;
- }
- else
- {
- huart->State = HAL_UART_STATE_READY;
- }
- HAL_UART_RxCpltCallback(huart);
-}
-
-/**
- * @brief DMA UART receive process half complete callback
- * @param hdma : DMA handle
- * @retval None
- */
-static void UART_DMARxHalfCplt(DMA_HandleTypeDef *hdma)
-{
- UART_HandleTypeDef* huart = (UART_HandleTypeDef*)((DMA_HandleTypeDef*)hdma)->Parent;
-
- HAL_UART_RxHalfCpltCallback(huart);
-}
-
-/**
- * @brief DMA UART communication error callback
- * @param hdma: DMA handle
- * @retval None
- */
-static void UART_DMAError(DMA_HandleTypeDef *hdma)
-{
- UART_HandleTypeDef* huart = ( UART_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
- huart->RxXferCount = 0;
- huart->TxXferCount = 0;
- huart->State= HAL_UART_STATE_READY;
- huart->ErrorCode |= HAL_UART_ERROR_DMA;
- HAL_UART_ErrorCallback(huart);
-}
-
/**
* @brief Tx Transfer completed callbacks
* @param huart: uart handle
@@ -1401,137 +1309,11 @@
*/
}
-
-/**
- * @brief Send an amount of data in interrupt mode
- * Function called under interruption only, once
- * interruptions have been enabled by HAL_UART_Transmit_IT()
- * @param huart: UART handle
- * @retval HAL status
- */
-static HAL_StatusTypeDef UART_Transmit_IT(UART_HandleTypeDef *huart)
-{
- uint16_t* tmp;
-
- if ((huart->State == HAL_UART_STATE_BUSY_TX) || (huart->State == HAL_UART_STATE_BUSY_TX_RX))
- {
-
- if(huart->TxXferCount == 0)
- {
- /* Disable the UART Transmit Data Register Empty Interrupt */
- __HAL_UART_DISABLE_IT(huart, UART_IT_TXE);
-
- /* Check if a receive Process is ongoing or not */
- if(huart->State == HAL_UART_STATE_BUSY_TX_RX)
- {
- huart->State = HAL_UART_STATE_BUSY_RX;
- }
- else
- {
- /* Disable the UART Error Interrupt: (Frame error, noise error, overrun error) */
- __HAL_UART_DISABLE_IT(huart, UART_IT_ERR);
-
- huart->State = HAL_UART_STATE_READY;
- }
-
- /* Wait on TC flag to be able to start a second transfer */
- if(UART_WaitOnFlagUntilTimeout(huart, UART_FLAG_TC, RESET, HAL_UART_TIMEOUT_VALUE) != HAL_OK)
- {
- return HAL_TIMEOUT;
- }
-
- HAL_UART_TxCpltCallback(huart);
-
- return HAL_OK;
- }
- else
- {
- if ((huart->Init.WordLength == UART_WORDLENGTH_9B) && (huart->Init.Parity == UART_PARITY_NONE))
- {
- tmp = (uint16_t*) huart->pTxBuffPtr;
- huart->Instance->TDR = (*tmp & (uint16_t)0x01FF);
- huart->pTxBuffPtr += 2;
- }
- else
- {
- huart->Instance->TDR = (uint8_t)(*huart->pTxBuffPtr++ & (uint8_t)0xFF);
- }
-
- huart->TxXferCount--;
-
- return HAL_OK;
- }
- }
- else
- {
- return HAL_BUSY;
- }
-}
-
-/**
- * @brief Receive an amount of data in interrupt mode
- * Function called under interruption only, once
- * interruptions have been enabled by HAL_UART_Receive_IT()
- * @param huart: UART handle
- * @retval HAL status
- */
-static HAL_StatusTypeDef UART_Receive_IT(UART_HandleTypeDef *huart)
-{
- uint16_t* tmp;
- uint16_t uhMask = huart->Mask;
-
- if((huart->State == HAL_UART_STATE_BUSY_RX) || (huart->State == HAL_UART_STATE_BUSY_TX_RX))
- {
-
- if ((huart->Init.WordLength == UART_WORDLENGTH_9B) && (huart->Init.Parity == UART_PARITY_NONE))
- {
- tmp = (uint16_t*) huart->pRxBuffPtr ;
- *tmp = (uint16_t)(huart->Instance->RDR & uhMask);
- huart->pRxBuffPtr +=2;
- }
- else
- {
- *huart->pRxBuffPtr++ = (uint8_t)(huart->Instance->RDR & (uint8_t)uhMask);
- }
-
- if(--huart->RxXferCount == 0)
- {
- __HAL_UART_DISABLE_IT(huart, UART_IT_RXNE);
-
- /* Check if a transmit Process is ongoing or not */
- if(huart->State == HAL_UART_STATE_BUSY_TX_RX)
- {
- huart->State = HAL_UART_STATE_BUSY_TX;
- }
- else
- {
- /* Disable the UART Parity Error Interrupt */
- __HAL_UART_DISABLE_IT(huart, UART_IT_PE);
-
- /* Disable the UART Error Interrupt: (Frame error, noise error, overrun error) */
- __HAL_UART_DISABLE_IT(huart, UART_IT_ERR);
-
- huart->State = HAL_UART_STATE_READY;
- }
-
- HAL_UART_RxCpltCallback(huart);
-
- return HAL_OK;
- }
-
- return HAL_OK;
- }
- else
- {
- return HAL_BUSY;
- }
-}
-
/**
* @}
*/
-/** @defgroup HAL_UART_Group3 Peripheral Control functions
+/** @defgroup UART_Exported_Functions_Group3 Peripheral Control functions
* @brief UART control functions
*
@verbatim
@@ -1540,7 +1322,6 @@
===============================================================================
[..]
This subsection provides a set of functions allowing to control the UART.
- (+) HAL_UART_GetState() API is helpful to check in run-time the state of the UART peripheral.
(+) HAL_MultiProcessor_EnableMuteMode() API enables mute mode
(+) HAL_MultiProcessor_DisableMuteMode() API disables mute mode
(+) HAL_MultiProcessor_EnterMuteMode() API enters mute mode
@@ -1609,29 +1390,6 @@
__HAL_UART_SEND_REQ(huart, UART_MUTE_MODE_REQUEST);
}
-
-
-/**
- * @brief return the UART state
- * @param huart: uart handle
- * @retval HAL state
- */
-HAL_UART_StateTypeDef HAL_UART_GetState(UART_HandleTypeDef *huart)
-{
- return huart->State;
-}
-
-/**
-* @brief Return the UART error code
-* @param huart : pointer to a UART_HandleTypeDef structure that contains
- * the configuration information for the specified UART.
-* @retval UART Error Code
-*/
-uint32_t HAL_UART_GetError(UART_HandleTypeDef *huart)
-{
- return huart->ErrorCode;
-}
-
/**
* @brief Configure the UART peripheral
* @param huart: uart handle
@@ -1959,10 +1717,298 @@
* @}
*/
+/** @defgroup UART_Exported_Functions_Group4 Peripheral State and Error functions
+ * @brief UART Peripheral State functions
+ *
+@verbatim
+ ==============================================================================
+ ##### Peripheral State and Error functions #####
+ ==============================================================================
+ [..]
+ This subsection provides functions allowing to :
+ (+) Returns the UART state.
+ (+) Returns the UART error code
+
+@endverbatim
+ * @{
+ */
+
+ /**
+ * @brief return the UART state
+ * @param huart: uart handle
+ * @retval HAL state
+ */
+HAL_UART_StateTypeDef HAL_UART_GetState(UART_HandleTypeDef *huart)
+{
+ return huart->State;
+}
+
+/**
+* @brief Return the UART error code
+* @param huart : pointer to a UART_HandleTypeDef structure that contains
+ * the configuration information for the specified UART.
+* @retval UART Error Code
+*/
+uint32_t HAL_UART_GetError(UART_HandleTypeDef *huart)
+{
+ return huart->ErrorCode;
+}
+/**
+ * @}
+ */
+
+
/**
* @}
*/
+/** @defgroup UART_Private_Functions UART Private Functions
+ * @{
+ */
+/**
+ * @brief DMA UART transmit process complete callback
+ * @param hdma: DMA handle
+ * @retval None
+ */
+static void UART_DMATransmitCplt(DMA_HandleTypeDef *hdma)
+{
+ UART_HandleTypeDef* huart = ( UART_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
+ huart->TxXferCount = 0;
+
+ /* Disable the DMA transfer for transmit request by setting the DMAT bit
+ in the UART CR3 register */
+ huart->Instance->CR3 &= (uint32_t)~((uint32_t)USART_CR3_DMAT);
+
+ /* Wait for UART TC Flag */
+ if(UART_WaitOnFlagUntilTimeout(huart, UART_FLAG_TC, RESET, HAL_UART_TXDMA_TIMEOUTVALUE) != HAL_OK)
+ {
+ /* Timeout Occured */
+ huart->State = HAL_UART_STATE_TIMEOUT;
+ HAL_UART_ErrorCallback(huart);
+ }
+ else
+ {
+ /* No Timeout */
+ /* Check if a receive process is ongoing or not */
+ if(huart->State == HAL_UART_STATE_BUSY_TX_RX)
+ {
+ huart->State = HAL_UART_STATE_BUSY_RX;
+ }
+ else
+ {
+ huart->State = HAL_UART_STATE_READY;
+ }
+ HAL_UART_TxCpltCallback(huart);
+ }
+}
+
+/**
+ * @brief DMA UART transmit process half complete callback
+ * @param hdma : DMA handle
+ * @retval None
+ */
+static void UART_DMATxHalfCplt(DMA_HandleTypeDef *hdma)
+{
+ UART_HandleTypeDef* huart = (UART_HandleTypeDef*)((DMA_HandleTypeDef*)hdma)->Parent;
+
+ HAL_UART_TxHalfCpltCallback(huart);
+}
+
+/**
+ * @brief DMA UART receive process complete callback
+ * @param hdma: DMA handle
+ * @retval None
+ */
+static void UART_DMAReceiveCplt(DMA_HandleTypeDef *hdma)
+{
+ UART_HandleTypeDef* huart = ( UART_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
+ huart->RxXferCount = 0;
+
+ /* Disable the DMA transfer for the receiver request by setting the DMAR bit
+ in the UART CR3 register */
+ huart->Instance->CR3 &= (uint32_t)~((uint32_t)USART_CR3_DMAR);
+
+ /* Check if a transmit Process is ongoing or not */
+ if(huart->State == HAL_UART_STATE_BUSY_TX_RX)
+ {
+ huart->State = HAL_UART_STATE_BUSY_TX;
+ }
+ else
+ {
+ huart->State = HAL_UART_STATE_READY;
+ }
+ HAL_UART_RxCpltCallback(huart);
+}
+
+/**
+ * @brief DMA UART receive process half complete callback
+ * @param hdma : DMA handle
+ * @retval None
+ */
+static void UART_DMARxHalfCplt(DMA_HandleTypeDef *hdma)
+{
+ UART_HandleTypeDef* huart = (UART_HandleTypeDef*)((DMA_HandleTypeDef*)hdma)->Parent;
+
+ HAL_UART_RxHalfCpltCallback(huart);
+}
+
+/**
+ * @brief DMA UART communication error callback
+ * @param hdma: DMA handle
+ * @retval None
+ */
+static void UART_DMAError(DMA_HandleTypeDef *hdma)
+{
+ UART_HandleTypeDef* huart = ( UART_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
+ huart->RxXferCount = 0;
+ huart->TxXferCount = 0;
+ huart->State= HAL_UART_STATE_READY;
+ huart->ErrorCode |= HAL_UART_ERROR_DMA;
+ HAL_UART_ErrorCallback(huart);
+}
+
+/**
+ * @brief Send an amount of data in interrupt mode
+ * Function called under interruption only, once
+ * interruptions have been enabled by HAL_UART_Transmit_IT()
+ * @param huart: UART handle
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef UART_Transmit_IT(UART_HandleTypeDef *huart)
+{
+ uint16_t* tmp;
+
+ if ((huart->State == HAL_UART_STATE_BUSY_TX) || (huart->State == HAL_UART_STATE_BUSY_TX_RX))
+ {
+
+ if(huart->TxXferCount == 0)
+ {
+ /* Disable the UART Transmit Data Register Empty Interrupt */
+ __HAL_UART_DISABLE_IT(huart, UART_IT_TXE);
+
+ /* Enable the UART Transmit Complete Interrupt */
+ __HAL_UART_ENABLE_IT(huart, UART_IT_TC);
+
+ return HAL_OK;
+ }
+ else
+ {
+ if ((huart->Init.WordLength == UART_WORDLENGTH_9B) && (huart->Init.Parity == UART_PARITY_NONE))
+ {
+ tmp = (uint16_t*) huart->pTxBuffPtr;
+ huart->Instance->TDR = (*tmp & (uint16_t)0x01FF);
+ huart->pTxBuffPtr += 2;
+ }
+ else
+ {
+ huart->Instance->TDR = (uint8_t)(*huart->pTxBuffPtr++ & (uint8_t)0xFF);
+ }
+
+ huart->TxXferCount--;
+
+ return HAL_OK;
+ }
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+
+/**
+ * @brief Wraps up transmission in non blocking mode.
+ * @param huart: pointer to a UART_HandleTypeDef structure that contains
+ * the configuration information for the specified UART module.
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef UART_EndTransmit_IT(UART_HandleTypeDef *huart)
+{
+ /* Disable the UART Transmit Complete Interrupt */
+ __HAL_UART_DISABLE_IT(huart, UART_IT_TC);
+
+ /* Check if a receive process is ongoing or not */
+ if(huart->State == HAL_UART_STATE_BUSY_TX_RX)
+ {
+ huart->State = HAL_UART_STATE_BUSY_RX;
+ }
+ else
+ {
+ /* Disable the UART Error Interrupt: (Frame error, noise error, overrun error) */
+ __HAL_UART_DISABLE_IT(huart, UART_IT_ERR);
+
+ huart->State = HAL_UART_STATE_READY;
+ }
+
+ HAL_UART_TxCpltCallback(huart);
+
+ return HAL_OK;
+}
+
+
+/**
+ * @brief Receive an amount of data in interrupt mode
+ * Function called under interruption only, once
+ * interruptions have been enabled by HAL_UART_Receive_IT()
+ * @param huart: UART handle
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef UART_Receive_IT(UART_HandleTypeDef *huart)
+{
+ uint16_t* tmp;
+ uint16_t uhMask = huart->Mask;
+
+ if((huart->State == HAL_UART_STATE_BUSY_RX) || (huart->State == HAL_UART_STATE_BUSY_TX_RX))
+ {
+
+ if ((huart->Init.WordLength == UART_WORDLENGTH_9B) && (huart->Init.Parity == UART_PARITY_NONE))
+ {
+ tmp = (uint16_t*) huart->pRxBuffPtr ;
+ *tmp = (uint16_t)(huart->Instance->RDR & uhMask);
+ huart->pRxBuffPtr +=2;
+ }
+ else
+ {
+ *huart->pRxBuffPtr++ = (uint8_t)(huart->Instance->RDR & (uint8_t)uhMask);
+ }
+
+ if(--huart->RxXferCount == 0)
+ {
+ __HAL_UART_DISABLE_IT(huart, UART_IT_RXNE);
+
+ /* Check if a transmit Process is ongoing or not */
+ if(huart->State == HAL_UART_STATE_BUSY_TX_RX)
+ {
+ huart->State = HAL_UART_STATE_BUSY_TX;
+ }
+ else
+ {
+ /* Disable the UART Parity Error Interrupt */
+ __HAL_UART_DISABLE_IT(huart, UART_IT_PE);
+
+ /* Disable the UART Error Interrupt: (Frame error, noise error, overrun error) */
+ __HAL_UART_DISABLE_IT(huart, UART_IT_ERR);
+
+ huart->State = HAL_UART_STATE_READY;
+ }
+
+ HAL_UART_RxCpltCallback(huart);
+
+ return HAL_OK;
+ }
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @}
+ */
+
#endif /* HAL_UART_MODULE_ENABLED */
/**
* @}