diff --git a/Inc/stm32l4xx_hal_dfsdm.h b/Inc/stm32l4xx_hal_dfsdm.h
index d2c0f9b..11bedaa 100644
--- a/Inc/stm32l4xx_hal_dfsdm.h
+++ b/Inc/stm32l4xx_hal_dfsdm.h
@@ -634,11 +634,11 @@
 HAL_StatusTypeDef HAL_DFSDM_ChannelScdStop(DFSDM_Channel_HandleTypeDef *hdfsdm_channel);
 HAL_StatusTypeDef HAL_DFSDM_ChannelScdStop_IT(DFSDM_Channel_HandleTypeDef *hdfsdm_channel);
 
-int16_t           HAL_DFSDM_ChannelGetAwdValue(DFSDM_Channel_HandleTypeDef *hdfsdm_channel);
+int16_t           HAL_DFSDM_ChannelGetAwdValue(const DFSDM_Channel_HandleTypeDef *hdfsdm_channel);
 HAL_StatusTypeDef HAL_DFSDM_ChannelModifyOffset(DFSDM_Channel_HandleTypeDef *hdfsdm_channel, int32_t Offset);
 
-HAL_StatusTypeDef HAL_DFSDM_ChannelPollForCkab(DFSDM_Channel_HandleTypeDef *hdfsdm_channel, uint32_t Timeout);
-HAL_StatusTypeDef HAL_DFSDM_ChannelPollForScd(DFSDM_Channel_HandleTypeDef *hdfsdm_channel, uint32_t Timeout);
+HAL_StatusTypeDef HAL_DFSDM_ChannelPollForCkab(const DFSDM_Channel_HandleTypeDef *hdfsdm_channel, uint32_t Timeout);
+HAL_StatusTypeDef HAL_DFSDM_ChannelPollForScd(const DFSDM_Channel_HandleTypeDef *hdfsdm_channel, uint32_t Timeout);
 
 void HAL_DFSDM_ChannelCkabCallback(DFSDM_Channel_HandleTypeDef *hdfsdm_channel);
 void HAL_DFSDM_ChannelScdCallback(DFSDM_Channel_HandleTypeDef *hdfsdm_channel);
@@ -650,7 +650,7 @@
   * @{
   */
 /* Channel state function *****************************************************/
-HAL_DFSDM_Channel_StateTypeDef HAL_DFSDM_ChannelGetState(DFSDM_Channel_HandleTypeDef *hdfsdm_channel);
+HAL_DFSDM_Channel_StateTypeDef HAL_DFSDM_ChannelGetState(const DFSDM_Channel_HandleTypeDef *hdfsdm_channel);
 /**
   * @}
   */
@@ -711,16 +711,16 @@
 HAL_StatusTypeDef HAL_DFSDM_FilterInjectedStop_IT(DFSDM_Filter_HandleTypeDef *hdfsdm_filter);
 HAL_StatusTypeDef HAL_DFSDM_FilterInjectedStop_DMA(DFSDM_Filter_HandleTypeDef *hdfsdm_filter);
 HAL_StatusTypeDef HAL_DFSDM_FilterAwdStart_IT(DFSDM_Filter_HandleTypeDef *hdfsdm_filter,
-                                              DFSDM_Filter_AwdParamTypeDef *awdParam);
+                                              const DFSDM_Filter_AwdParamTypeDef *awdParam);
 HAL_StatusTypeDef HAL_DFSDM_FilterAwdStop_IT(DFSDM_Filter_HandleTypeDef *hdfsdm_filter);
 HAL_StatusTypeDef HAL_DFSDM_FilterExdStart(DFSDM_Filter_HandleTypeDef *hdfsdm_filter, uint32_t Channel);
 HAL_StatusTypeDef HAL_DFSDM_FilterExdStop(DFSDM_Filter_HandleTypeDef *hdfsdm_filter);
 
-int32_t  HAL_DFSDM_FilterGetRegularValue(DFSDM_Filter_HandleTypeDef *hdfsdm_filter, uint32_t *Channel);
-int32_t  HAL_DFSDM_FilterGetInjectedValue(DFSDM_Filter_HandleTypeDef *hdfsdm_filter, uint32_t *Channel);
-int32_t  HAL_DFSDM_FilterGetExdMaxValue(DFSDM_Filter_HandleTypeDef *hdfsdm_filter, uint32_t *Channel);
-int32_t  HAL_DFSDM_FilterGetExdMinValue(DFSDM_Filter_HandleTypeDef *hdfsdm_filter, uint32_t *Channel);
-uint32_t HAL_DFSDM_FilterGetConvTimeValue(DFSDM_Filter_HandleTypeDef *hdfsdm_filter);
+int32_t  HAL_DFSDM_FilterGetRegularValue(const DFSDM_Filter_HandleTypeDef *hdfsdm_filter, uint32_t *Channel);
+int32_t  HAL_DFSDM_FilterGetInjectedValue(const DFSDM_Filter_HandleTypeDef *hdfsdm_filter, uint32_t *Channel);
+int32_t  HAL_DFSDM_FilterGetExdMaxValue(const DFSDM_Filter_HandleTypeDef *hdfsdm_filter, uint32_t *Channel);
+int32_t  HAL_DFSDM_FilterGetExdMinValue(const DFSDM_Filter_HandleTypeDef *hdfsdm_filter, uint32_t *Channel);
+uint32_t HAL_DFSDM_FilterGetConvTimeValue(const DFSDM_Filter_HandleTypeDef *hdfsdm_filter);
 
 void HAL_DFSDM_IRQHandler(DFSDM_Filter_HandleTypeDef *hdfsdm_filter);
 
@@ -741,8 +741,8 @@
   * @{
   */
 /* Filter state functions *****************************************************/
-HAL_DFSDM_Filter_StateTypeDef HAL_DFSDM_FilterGetState(DFSDM_Filter_HandleTypeDef *hdfsdm_filter);
-uint32_t                      HAL_DFSDM_FilterGetError(DFSDM_Filter_HandleTypeDef *hdfsdm_filter);
+HAL_DFSDM_Filter_StateTypeDef HAL_DFSDM_FilterGetState(const DFSDM_Filter_HandleTypeDef *hdfsdm_filter);
+uint32_t                      HAL_DFSDM_FilterGetError(const DFSDM_Filter_HandleTypeDef *hdfsdm_filter);
 /**
   * @}
   */
diff --git a/Inc/stm32l4xx_hal_dfsdm_ex.h b/Inc/stm32l4xx_hal_dfsdm_ex.h
index 0082399..6d1173f 100644
--- a/Inc/stm32l4xx_hal_dfsdm_ex.h
+++ b/Inc/stm32l4xx_hal_dfsdm_ex.h
@@ -52,7 +52,7 @@
   */
 
 HAL_StatusTypeDef HAL_DFDSMEx_ChannelSetPulsesSkipping(DFSDM_Channel_HandleTypeDef *hdfsdm_channel, uint32_t PulsesValue);
-HAL_StatusTypeDef HAL_DFDSMEx_ChannelGetPulsesSkipping(DFSDM_Channel_HandleTypeDef *hdfsdm_channel, uint32_t *PulsesValue);
+HAL_StatusTypeDef HAL_DFDSMEx_ChannelGetPulsesSkipping(const DFSDM_Channel_HandleTypeDef *hdfsdm_channel, uint32_t *PulsesValue);
 
 /**
   * @}
diff --git a/Src/stm32l4xx_hal_dfsdm.c b/Src/stm32l4xx_hal_dfsdm.c
index 9963140..6811d79 100644
--- a/Src/stm32l4xx_hal_dfsdm.c
+++ b/Src/stm32l4xx_hal_dfsdm.c
@@ -763,7 +763,7 @@
   * @param  Timeout Timeout value in milliseconds.
   * @retval HAL status
   */
-HAL_StatusTypeDef HAL_DFSDM_ChannelPollForCkab(DFSDM_Channel_HandleTypeDef *hdfsdm_channel,
+HAL_StatusTypeDef HAL_DFSDM_ChannelPollForCkab(const DFSDM_Channel_HandleTypeDef *hdfsdm_channel,
                                                uint32_t Timeout)
 {
   uint32_t tickstart;
@@ -997,7 +997,7 @@
   * @param  Timeout Timeout value in milliseconds.
   * @retval HAL status
   */
-HAL_StatusTypeDef HAL_DFSDM_ChannelPollForScd(DFSDM_Channel_HandleTypeDef *hdfsdm_channel,
+HAL_StatusTypeDef HAL_DFSDM_ChannelPollForScd(const DFSDM_Channel_HandleTypeDef *hdfsdm_channel,
                                               uint32_t Timeout)
 {
   uint32_t tickstart;
@@ -1174,7 +1174,7 @@
   * @param  hdfsdm_channel DFSDM channel handle.
   * @retval Channel analog watchdog value.
   */
-int16_t HAL_DFSDM_ChannelGetAwdValue(DFSDM_Channel_HandleTypeDef *hdfsdm_channel)
+int16_t HAL_DFSDM_ChannelGetAwdValue(const DFSDM_Channel_HandleTypeDef *hdfsdm_channel)
 {
   return (int16_t) hdfsdm_channel->Instance->CHWDATAR;
 }
@@ -1233,7 +1233,7 @@
   * @param  hdfsdm_channel DFSDM channel handle.
   * @retval DFSDM channel state.
   */
-HAL_DFSDM_Channel_StateTypeDef HAL_DFSDM_ChannelGetState(DFSDM_Channel_HandleTypeDef *hdfsdm_channel)
+HAL_DFSDM_Channel_StateTypeDef HAL_DFSDM_ChannelGetState(const DFSDM_Channel_HandleTypeDef *hdfsdm_channel)
 {
   /* Return DFSDM channel handle state */
   return hdfsdm_channel->State;
@@ -2205,7 +2205,7 @@
   * @param  Channel Corresponding channel of regular conversion.
   * @retval Regular conversion value
   */
-int32_t HAL_DFSDM_FilterGetRegularValue(DFSDM_Filter_HandleTypeDef *hdfsdm_filter,
+int32_t HAL_DFSDM_FilterGetRegularValue(const DFSDM_Filter_HandleTypeDef *hdfsdm_filter,
                                         uint32_t                   *Channel)
 {
   uint32_t reg;
@@ -2617,7 +2617,7 @@
   * @param  Channel Corresponding channel of injected conversion.
   * @retval Injected conversion value
   */
-int32_t HAL_DFSDM_FilterGetInjectedValue(DFSDM_Filter_HandleTypeDef *hdfsdm_filter,
+int32_t HAL_DFSDM_FilterGetInjectedValue(const DFSDM_Filter_HandleTypeDef *hdfsdm_filter,
                                          uint32_t                   *Channel)
 {
   uint32_t reg;
@@ -2648,7 +2648,7 @@
   * @retval HAL status
   */
 HAL_StatusTypeDef HAL_DFSDM_FilterAwdStart_IT(DFSDM_Filter_HandleTypeDef   *hdfsdm_filter,
-                                              DFSDM_Filter_AwdParamTypeDef *awdParam)
+                                              const DFSDM_Filter_AwdParamTypeDef *awdParam)
 {
   HAL_StatusTypeDef status = HAL_OK;
 
@@ -2805,7 +2805,7 @@
   * @retval Extreme detector maximum value
   *         This value is between Min_Data = -8388608 and Max_Data = 8388607.
   */
-int32_t HAL_DFSDM_FilterGetExdMaxValue(DFSDM_Filter_HandleTypeDef *hdfsdm_filter,
+int32_t HAL_DFSDM_FilterGetExdMaxValue(const DFSDM_Filter_HandleTypeDef *hdfsdm_filter,
                                        uint32_t                   *Channel)
 {
   uint32_t reg;
@@ -2836,7 +2836,7 @@
   * @retval Extreme detector minimum value
   *         This value is between Min_Data = -8388608 and Max_Data = 8388607.
   */
-int32_t HAL_DFSDM_FilterGetExdMinValue(DFSDM_Filter_HandleTypeDef *hdfsdm_filter,
+int32_t HAL_DFSDM_FilterGetExdMinValue(const DFSDM_Filter_HandleTypeDef *hdfsdm_filter,
                                        uint32_t                   *Channel)
 {
   uint32_t reg;
@@ -2866,7 +2866,7 @@
   * @retval Conversion time value
   * @note   To get time in second, this value has to be divided by DFSDM clock frequency.
   */
-uint32_t HAL_DFSDM_FilterGetConvTimeValue(DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
+uint32_t HAL_DFSDM_FilterGetConvTimeValue(const DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
 {
   uint32_t reg;
   uint32_t value;
@@ -3197,7 +3197,7 @@
   * @param  hdfsdm_filter DFSDM filter handle.
   * @retval DFSDM filter state.
   */
-HAL_DFSDM_Filter_StateTypeDef HAL_DFSDM_FilterGetState(DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
+HAL_DFSDM_Filter_StateTypeDef HAL_DFSDM_FilterGetState(const DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
 {
   /* Return DFSDM filter handle state */
   return hdfsdm_filter->State;
@@ -3208,7 +3208,7 @@
   * @param  hdfsdm_filter DFSDM filter handle.
   * @retval DFSDM filter error code.
   */
-uint32_t HAL_DFSDM_FilterGetError(DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
+uint32_t HAL_DFSDM_FilterGetError(const DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
 {
   return hdfsdm_filter->ErrorCode;
 }
diff --git a/Src/stm32l4xx_hal_dfsdm_ex.c b/Src/stm32l4xx_hal_dfsdm_ex.c
index 42ddd98..3e31164 100644
--- a/Src/stm32l4xx_hal_dfsdm_ex.c
+++ b/Src/stm32l4xx_hal_dfsdm_ex.c
@@ -95,7 +95,7 @@
   * @param  PulsesValue Value of pulses to be skipped.
   * @retval HAL status.
   */
-HAL_StatusTypeDef HAL_DFDSMEx_ChannelGetPulsesSkipping(DFSDM_Channel_HandleTypeDef *hdfsdm_channel, uint32_t *PulsesValue)
+HAL_StatusTypeDef HAL_DFDSMEx_ChannelGetPulsesSkipping(const DFSDM_Channel_HandleTypeDef *hdfsdm_channel, uint32_t *PulsesValue)
 {
   HAL_StatusTypeDef status = HAL_OK;