[HAL][SMARTCARD] Add const qualifier for read only pointers

Inc/stm32l1xx_hal_smartcard.h

diff --git a/Inc/stm32l1xx_hal_smartcard.h b/Inc/stm32l1xx_hal_smartcard.h
index d8cfb57..5376f21 100644
--- a/Inc/stm32l1xx_hal_smartcard.h
+++ b/Inc/stm32l1xx_hal_smartcard.h
@@ -156,7 +156,7 @@
 
   SMARTCARD_InitTypeDef            Init;             /*!< SmartCard communication parameters */
 
-  uint8_t                          *pTxBuffPtr;      /*!< Pointer to SmartCard Tx transfer Buffer */
+  const uint8_t                    *pTxBuffPtr;      /*!< Pointer to SmartCard Tx transfer Buffer */
 
   uint16_t                         TxXferSize;       /*!< SmartCard Tx Transfer size */
 
@@ -642,11 +642,11 @@
   * @{
   */
 /* IO operation functions *******************************************************/
-HAL_StatusTypeDef HAL_SMARTCARD_Transmit(SMARTCARD_HandleTypeDef *hsc, uint8_t *pData, uint16_t Size, uint32_t Timeout);
+HAL_StatusTypeDef HAL_SMARTCARD_Transmit(SMARTCARD_HandleTypeDef *hsc, const uint8_t *pData, uint16_t Size, uint32_t Timeout);
 HAL_StatusTypeDef HAL_SMARTCARD_Receive(SMARTCARD_HandleTypeDef *hsc, uint8_t *pData, uint16_t Size, uint32_t Timeout);
-HAL_StatusTypeDef HAL_SMARTCARD_Transmit_IT(SMARTCARD_HandleTypeDef *hsc, uint8_t *pData, uint16_t Size);
+HAL_StatusTypeDef HAL_SMARTCARD_Transmit_IT(SMARTCARD_HandleTypeDef *hsc, const uint8_t *pData, uint16_t Size);
 HAL_StatusTypeDef HAL_SMARTCARD_Receive_IT(SMARTCARD_HandleTypeDef *hsc, uint8_t *pData, uint16_t Size);
-HAL_StatusTypeDef HAL_SMARTCARD_Transmit_DMA(SMARTCARD_HandleTypeDef *hsc, uint8_t *pData, uint16_t Size);
+HAL_StatusTypeDef HAL_SMARTCARD_Transmit_DMA(SMARTCARD_HandleTypeDef *hsc, const uint8_t *pData, uint16_t Size);
 HAL_StatusTypeDef HAL_SMARTCARD_Receive_DMA(SMARTCARD_HandleTypeDef *hsc, uint8_t *pData, uint16_t Size);
 /* Transfer Abort functions */
 HAL_StatusTypeDef HAL_SMARTCARD_Abort(SMARTCARD_HandleTypeDef *hsc);

Src/stm32l1xx_hal_smartcard.c

diff --git a/Src/stm32l1xx_hal_smartcard.c b/Src/stm32l1xx_hal_smartcard.c
index f92c294..c5d987f 100644
--- a/Src/stm32l1xx_hal_smartcard.c
+++ b/Src/stm32l1xx_hal_smartcard.c
@@ -752,9 +752,9 @@
   * @param  Timeout Timeout duration
   * @retval HAL status
   */
-HAL_StatusTypeDef HAL_SMARTCARD_Transmit(SMARTCARD_HandleTypeDef *hsc, uint8_t *pData, uint16_t Size, uint32_t Timeout)
+HAL_StatusTypeDef HAL_SMARTCARD_Transmit(SMARTCARD_HandleTypeDef *hsc, const uint8_t *pData, uint16_t Size, uint32_t Timeout)
 {
-  uint8_t *tmp = pData;
+  const uint8_t *tmp = pData;
   uint32_t tickstart = 0U;
 
   if(hsc->gState == HAL_SMARTCARD_STATE_READY)
@@ -872,7 +872,7 @@
   * @param  Size   Amount of data to be sent
   * @retval HAL status
   */
-HAL_StatusTypeDef HAL_SMARTCARD_Transmit_IT(SMARTCARD_HandleTypeDef *hsc, uint8_t *pData, uint16_t Size)
+HAL_StatusTypeDef HAL_SMARTCARD_Transmit_IT(SMARTCARD_HandleTypeDef *hsc, const uint8_t *pData, uint16_t Size)
 {
   /* Check that a Tx process is not already ongoing */
   if(hsc->gState == HAL_SMARTCARD_STATE_READY)
@@ -965,9 +965,9 @@
   * @param  Size   Amount of data to be sent
   * @retval HAL status
   */
-HAL_StatusTypeDef HAL_SMARTCARD_Transmit_DMA(SMARTCARD_HandleTypeDef *hsc, uint8_t *pData, uint16_t Size)
+HAL_StatusTypeDef HAL_SMARTCARD_Transmit_DMA(SMARTCARD_HandleTypeDef *hsc, const uint8_t *pData, uint16_t Size)
 {
-  uint32_t *tmp;
+  const uint32_t *tmp;
 
   /* Check that a Tx process is not already ongoing */
   if(hsc->gState == HAL_SMARTCARD_STATE_READY)
@@ -997,8 +997,8 @@
     hsc->hdmatx->XferAbortCallback = NULL;
 
     /* Enable the SMARTCARD transmit DMA channel */
-    tmp = (uint32_t*)&pData;
-    HAL_DMA_Start_IT(hsc->hdmatx, *(uint32_t*)tmp, (uint32_t)&hsc->Instance->DR, Size);
+    tmp = (const uint32_t*)&pData;
+    HAL_DMA_Start_IT(hsc->hdmatx, *(const uint32_t*)tmp, (uint32_t)&hsc->Instance->DR, Size);
 
      /* Clear the TC flag in the SR register by writing 0 to it */
     __HAL_SMARTCARD_CLEAR_FLAG(hsc, SMARTCARD_FLAG_TC);