Mouse code for the MacroRat
Diff: mbed-dev/targets/TARGET_STM/TARGET_STM32F4/device/stm32f4xx_hal_dfsdm.c
- Revision:
- 18:6a4db94011d3
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed-dev/targets/TARGET_STM/TARGET_STM32F4/device/stm32f4xx_hal_dfsdm.c Sun May 14 23:18:57 2017 +0000 @@ -0,0 +1,2988 @@ +/** + ****************************************************************************** + * @file stm32f4xx_hal_dfsdm.c + * @author MCD Application Team + * @version V1.5.0 + * @date 06-May-2016 + * @brief This file provides firmware functions to manage the following + * functionalities of the Digital Filter for Sigma-Delta Modulators + * (DFSDM) peripherals: + * + Initialization and configuration of channels and filters + * + Regular channels configuration + * + Injected channels configuration + * + Regular/Injected Channels DMA Configuration + * + Interrupts and flags management + * + Analog watchdog feature + * + Short-circuit detector feature + * + Extremes detector feature + * + Clock absence detector feature + * + Break generation on analog watchdog or short-circuit event + * + @verbatim + ============================================================================== + ##### How to use this driver ##### + ============================================================================== + [..] + *** Channel initialization *** + ============================== + [..] + (#) User has first to initialize channels (before filters initialization). + (#) As prerequisite, fill in the HAL_DFSDM_ChannelMspInit() : + (++) Enable DFSDMz clock interface with __HAL_RCC_DFSDMz_CLK_ENABLE(). + (++) Enable the clocks for the DFSDMz GPIOS with __HAL_RCC_GPIOx_CLK_ENABLE(). + (++) Configure these DFSDMz pins in alternate mode using HAL_GPIO_Init(). + (++) If interrupt mode is used, enable and configure DFSDMz_FLT0 global + interrupt with HAL_NVIC_SetPriority() and HAL_NVIC_EnableIRQ(). + (#) Configure the output clock, input, serial interface, analog watchdog, + offset and data right bit shift parameters for this channel using the + HAL_DFSDM_ChannelInit() function. + + *** Channel clock absence detector *** + ====================================== + [..] + (#) Start clock absence detector using HAL_DFSDM_ChannelCkabStart() or + HAL_DFSDM_ChannelCkabStart_IT(). + (#) In polling mode, use HAL_DFSDM_ChannelPollForCkab() to detect the clock + absence. + (#) In interrupt mode, HAL_DFSDM_ChannelCkabCallback() will be called if + clock absence is detected. + (#) Stop clock absence detector using HAL_DFSDM_ChannelCkabStop() or + HAL_DFSDM_ChannelCkabStop_IT(). + (#) Please note that the same mode (polling or interrupt) has to be used + for all channels because the channels are sharing the same interrupt. + (#) Please note also that in interrupt mode, if clock absence detector is + stopped for one channel, interrupt will be disabled for all channels. + + *** Channel short circuit detector *** + ====================================== + [..] + (#) Start short circuit detector using HAL_DFSDM_ChannelScdStart() or + or HAL_DFSDM_ChannelScdStart_IT(). + (#) In polling mode, use HAL_DFSDM_ChannelPollForScd() to detect short + circuit. + (#) In interrupt mode, HAL_DFSDM_ChannelScdCallback() will be called if + short circuit is detected. + (#) Stop short circuit detector using HAL_DFSDM_ChannelScdStop() or + or HAL_DFSDM_ChannelScdStop_IT(). + (#) Please note that the same mode (polling or interrupt) has to be used + for all channels because the channels are sharing the same interrupt. + (#) Please note also that in interrupt mode, if short circuit detector is + stopped for one channel, interrupt will be disabled for all channels. + + *** Channel analog watchdog value *** + ===================================== + [..] + (#) Get analog watchdog filter value of a channel using + HAL_DFSDM_ChannelGetAwdValue(). + + *** Channel offset value *** + ===================================== + [..] + (#) Modify offset value of a channel using HAL_DFSDM_ChannelModifyOffset(). + + *** Filter initialization *** + ============================= + [..] + (#) After channel initialization, user has to init filters. + (#) As prerequisite, fill in the HAL_DFSDM_FilterMspInit() : + (++) If interrupt mode is used , enable and configure DFSDMz_FLTx global + interrupt with HAL_NVIC_SetPriority() and HAL_NVIC_EnableIRQ(). + Please note that DFSDMz_FLT0 global interrupt could be already + enabled if interrupt is used for channel. + (++) If DMA mode is used, configure DMA with HAL_DMA_Init() and link it + with DFSDMz filter handle using __HAL_LINKDMA(). + (#) Configure the regular conversion, injected conversion and filter + parameters for this filter using the HAL_DFSDM_FilterInit() function. + + *** Filter regular channel conversion *** + ========================================= + [..] + (#) Select regular channel and enable/disable continuous mode using + HAL_DFSDM_FilterConfigRegChannel(). + (#) Start regular conversion using HAL_DFSDM_FilterRegularStart(), + HAL_DFSDM_FilterRegularStart_IT(), HAL_DFSDM_FilterRegularStart_DMA() or + HAL_DFSDM_FilterRegularMsbStart_DMA(). + (#) In polling mode, use HAL_DFSDM_FilterPollForRegConversion() to detect + the end of regular conversion. + (#) In interrupt mode, HAL_DFSDM_FilterRegConvCpltCallback() will be called + at the end of regular conversion. + (#) Get value of regular conversion and corresponding channel using + HAL_DFSDM_FilterGetRegularValue(). + (#) In DMA mode, HAL_DFSDM_FilterRegConvHalfCpltCallback() and + HAL_DFSDM_FilterRegConvCpltCallback() will be called respectively at the + half transfer and at the transfer complete. Please note that + HAL_DFSDM_FilterRegConvHalfCpltCallback() will be called only in DMA + circular mode. + (#) Stop regular conversion using HAL_DFSDM_FilterRegularStop(), + HAL_DFSDM_FilterRegularStop_IT() or HAL_DFSDM_FilterRegularStop_DMA(). + + *** Filter injected channels conversion *** + =========================================== + [..] + (#) Select injected channels using HAL_DFSDM_FilterConfigInjChannel(). + (#) Start injected conversion using HAL_DFSDM_FilterInjectedStart(), + HAL_DFSDM_FilterInjectedStart_IT(), HAL_DFSDM_FilterInjectedStart_DMA() or + HAL_DFSDM_FilterInjectedMsbStart_DMA(). + (#) In polling mode, use HAL_DFSDM_FilterPollForInjConversion() to detect + the end of injected conversion. + (#) In interrupt mode, HAL_DFSDM_FilterInjConvCpltCallback() will be called + at the end of injected conversion. + (#) Get value of injected conversion and corresponding channel using + HAL_DFSDM_FilterGetInjectedValue(). + (#) In DMA mode, HAL_DFSDM_FilterInjConvHalfCpltCallback() and + HAL_DFSDM_FilterInjConvCpltCallback() will be called respectively at the + half transfer and at the transfer complete. Please note that + HAL_DFSDM_FilterInjConvCpltCallback() will be called only in DMA + circular mode. + (#) Stop injected conversion using HAL_DFSDM_FilterInjectedStop(), + HAL_DFSDM_FilterInjectedStop_IT() or HAL_DFSDM_FilterInjectedStop_DMA(). + + *** Filter analog watchdog *** + ============================== + [..] + (#) Start filter analog watchdog using HAL_DFSDM_FilterAwdStart_IT(). + (#) HAL_DFSDM_FilterAwdCallback() will be called if analog watchdog occurs. + (#) Stop filter analog watchdog using HAL_DFSDM_FilterAwdStop_IT(). + + *** Filter extreme detector *** + =============================== + [..] + (#) Start filter extreme detector using HAL_DFSDM_FilterExdStart(). + (#) Get extreme detector maximum value using HAL_DFSDM_FilterGetExdMaxValue(). + (#) Get extreme detector minimum value using HAL_DFSDM_FilterGetExdMinValue(). + (#) Start filter extreme detector using HAL_DFSDM_FilterExdStop(). + + *** Filter conversion time *** + ============================== + [..] + (#) Get conversion time value using HAL_DFSDM_FilterGetConvTimeValue(). + + @endverbatim + ****************************************************************************** + * @attention + * + * <h2><center>© COPYRIGHT(c) 2016 STMicroelectronics</center></h2> + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. Neither the name of STMicroelectronics nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER + * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, + * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************** + */ + +/* Includes ------------------------------------------------------------------*/ +#include "stm32f4xx_hal.h" + +/** @addtogroup STM32F4xx_HAL_Driver + * @{ + */ +#ifdef HAL_DFSDM_MODULE_ENABLED +#if defined(STM32F412Zx) || defined(STM32F412Vx) || defined(STM32F412Rx) || defined(STM32F412Cx) +/** @defgroup DFSDM DFSDM + * @brief DFSDM HAL driver module + * @{ + */ + +/* Private typedef -----------------------------------------------------------*/ +/* Private define ------------------------------------------------------------*/ +/** @defgroup DFSDM_Private_Define DFSDM Private Define + * @{ + */ +#define DFSDM_CHCFGR1_CLK_DIV_OFFSET POSITION_VAL(DFSDM_CHCFGR1_CKOUTDIV) +#define DFSDM_CHAWSCDR_BKSCD_OFFSET POSITION_VAL(DFSDM_CHAWSCDR_BKSCD) +#define DFSDM_CHAWSCDR_FOSR_OFFSET POSITION_VAL(DFSDM_CHAWSCDR_AWFOSR) +#define DFSDM_CHCFGR2_OFFSET_OFFSET POSITION_VAL(DFSDM_CHCFGR2_OFFSET) +#define DFSDM_CHCFGR2_DTRBS_OFFSET POSITION_VAL(DFSDM_CHCFGR2_DTRBS) +#define DFSDM_FLTFCR_FOSR_OFFSET POSITION_VAL(DFSDM_FLTFCR_FOSR) +#define DFSDM_FLTCR1_MSB_RCH_OFFSET 8U +#define DFSDM_FLTCR2_EXCH_OFFSET POSITION_VAL(DFSDM_FLTCR2_EXCH) +#define DFSDM_FLTCR2_AWDCH_OFFSET POSITION_VAL(DFSDM_FLTCR2_AWDCH) +#define DFSDM_FLTISR_CKABF_OFFSET POSITION_VAL(DFSDM_FLTISR_CKABF) +#define DFSDM_FLTISR_SCDF_OFFSET POSITION_VAL(DFSDM_FLTISR_SCDF) +#define DFSDM_FLTICR_CLRCKABF_OFFSET POSITION_VAL(DFSDM_FLTICR_CLRCKABF) +#define DFSDM_FLTICR_CLRSCDF_OFFSET POSITION_VAL(DFSDM_FLTICR_CLRSCSDF) +#define DFSDM_FLTRDATAR_DATA_OFFSET POSITION_VAL(DFSDM_FLTRDATAR_RDATA) +#define DFSDM_FLTJDATAR_DATA_OFFSET POSITION_VAL(DFSDM_FLTJDATAR_JDATA) +#define DFSDM_FLTAWHTR_THRESHOLD_OFFSET POSITION_VAL(DFSDM_FLTAWHTR_AWHT) +#define DFSDM_FLTAWLTR_THRESHOLD_OFFSET POSITION_VAL(DFSDM_FLTAWLTR_AWLT) +#define DFSDM_FLTEXMAX_DATA_OFFSET POSITION_VAL(DFSDM_FLTEXMAX_EXMAX) +#define DFSDM_FLTEXMIN_DATA_OFFSET POSITION_VAL(DFSDM_FLTEXMIN_EXMIN) +#define DFSDM_FLTCNVTIMR_DATA_OFFSET POSITION_VAL(DFSDM_FLTCNVTIMR_CNVCNT) +#define DFSDM_FLTAWSR_HIGH_OFFSET POSITION_VAL(DFSDM_FLTAWSR_AWHTF) +#define DFSDM_MSB_MASK 0xFFFF0000U +#define DFSDM_LSB_MASK 0x0000FFFFU +#define DFSDM_CKAB_TIMEOUT 5000U +#define DFSDM1_CHANNEL_NUMBER 4U +/** + * @} + */ + +/* Private macro -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +/** @defgroup DFSDM_Private_Variables DFSDM Private Variables + * @{ + */ +__IO uint32_t v_dfsdm1ChannelCounter = 0U; +DFSDM_Channel_HandleTypeDef* a_dfsdm1ChannelHandle[DFSDM1_CHANNEL_NUMBER] = {NULL}; +/** + * @} + */ + +/* Private function prototypes -----------------------------------------------*/ +/** @defgroup DFSDM_Private_Functions DFSDM Private Functions + * @{ + */ +static uint32_t DFSDM_GetInjChannelsNbr(uint32_t Channels); +static uint32_t DFSDM_GetChannelFromInstance(DFSDM_Channel_TypeDef* Instance); +static void DFSDM_RegConvStart(DFSDM_Filter_HandleTypeDef *hdfsdm_filter); +static void DFSDM_RegConvStop(DFSDM_Filter_HandleTypeDef* hdfsdm_filter); +static void DFSDM_InjConvStart(DFSDM_Filter_HandleTypeDef* hdfsdm_filter); +static void DFSDM_InjConvStop(DFSDM_Filter_HandleTypeDef* hdfsdm_filter); +static void DFSDM_DMARegularHalfConvCplt(DMA_HandleTypeDef *hdma); +static void DFSDM_DMARegularConvCplt(DMA_HandleTypeDef *hdma); +static void DFSDM_DMAInjectedHalfConvCplt(DMA_HandleTypeDef *hdma); +static void DFSDM_DMAInjectedConvCplt(DMA_HandleTypeDef *hdma); +static void DFSDM_DMAError(DMA_HandleTypeDef *hdma); +/** + * @} + */ + +/* Exported functions --------------------------------------------------------*/ +/** @defgroup DFSDM_Exported_Functions DFSDM Exported Functions + * @{ + */ + +/** @defgroup DFSDM_Exported_Functions_Group1_Channel Channel initialization and de-initialization functions + * @brief Channel initialization and de-initialization functions + * +@verbatim + ============================================================================== + ##### Channel initialization and de-initialization functions ##### + ============================================================================== + [..] This section provides functions allowing to: + (+) Initialize the DFSDM channel. + (+) De-initialize the DFSDM channel. +@endverbatim + * @{ + */ + +/** + * @brief Initialize the DFSDM channel according to the specified parameters + * in the DFSDM_ChannelInitTypeDef structure and initialize the associated handle. + * @param hdfsdm_channel : DFSDM channel handle. + * @retval HAL status. + */ +HAL_StatusTypeDef HAL_DFSDM_ChannelInit(DFSDM_Channel_HandleTypeDef *hdfsdm_channel) +{ + /* Check DFSDM Channel handle */ + if(hdfsdm_channel == NULL) + { + return HAL_ERROR; + } + + /* Check parameters */ + assert_param(IS_DFSDM_CHANNEL_ALL_INSTANCE(hdfsdm_channel->Instance)); + assert_param(IS_FUNCTIONAL_STATE(hdfsdm_channel->Init.OutputClock.Activation)); + assert_param(IS_DFSDM_CHANNEL_INPUT(hdfsdm_channel->Init.Input.Multiplexer)); + assert_param(IS_DFSDM_CHANNEL_DATA_PACKING(hdfsdm_channel->Init.Input.DataPacking)); + assert_param(IS_DFSDM_CHANNEL_INPUT_PINS(hdfsdm_channel->Init.Input.Pins)); + assert_param(IS_DFSDM_CHANNEL_SERIAL_INTERFACE_TYPE(hdfsdm_channel->Init.SerialInterface.Type)); + assert_param(IS_DFSDM_CHANNEL_SPI_CLOCK(hdfsdm_channel->Init.SerialInterface.SpiClock)); + assert_param(IS_DFSDM_CHANNEL_FILTER_ORDER(hdfsdm_channel->Init.Awd.FilterOrder)); + assert_param(IS_DFSDM_CHANNEL_FILTER_OVS_RATIO(hdfsdm_channel->Init.Awd.Oversampling)); + assert_param(IS_DFSDM_CHANNEL_OFFSET(hdfsdm_channel->Init.Offset)); + assert_param(IS_DFSDM_CHANNEL_RIGHT_BIT_SHIFT(hdfsdm_channel->Init.RightBitShift)); + + /* Check that channel has not been already initialized */ + if(a_dfsdm1ChannelHandle[DFSDM_GetChannelFromInstance(hdfsdm_channel->Instance)] != NULL) + { + return HAL_ERROR; + } + + /* Call MSP init function */ + HAL_DFSDM_ChannelMspInit(hdfsdm_channel); + + /* Update the channel counter */ + v_dfsdm1ChannelCounter++; + + /* Configure output serial clock and enable global DFSDM interface only for first channel */ + if(v_dfsdm1ChannelCounter == 1U) + { + assert_param(IS_DFSDM_CHANNEL_OUTPUT_CLOCK(hdfsdm_channel->Init.OutputClock.Selection)); + /* Set the output serial clock source */ + DFSDM1_Channel0->CHCFGR1 &= ~(DFSDM_CHCFGR1_CKOUTSRC); + DFSDM1_Channel0->CHCFGR1 |= hdfsdm_channel->Init.OutputClock.Selection; + + /* Reset clock divider */ + DFSDM1_Channel0->CHCFGR1 &= ~(DFSDM_CHCFGR1_CKOUTDIV); + if(hdfsdm_channel->Init.OutputClock.Activation == ENABLE) + { + assert_param(IS_DFSDM_CHANNEL_OUTPUT_CLOCK_DIVIDER(hdfsdm_channel->Init.OutputClock.Divider)); + /* Set the output clock divider */ + DFSDM1_Channel0->CHCFGR1 |= (uint32_t) ((hdfsdm_channel->Init.OutputClock.Divider - 1U) << + DFSDM_CHCFGR1_CLK_DIV_OFFSET); + } + + /* enable the DFSDM global interface */ + DFSDM1_Channel0->CHCFGR1 |= DFSDM_CHCFGR1_DFSDMEN; + } + + /* Set channel input parameters */ + hdfsdm_channel->Instance->CHCFGR1 &= ~(DFSDM_CHCFGR1_DATPACK | DFSDM_CHCFGR1_DATMPX | + DFSDM_CHCFGR1_CHINSEL); + hdfsdm_channel->Instance->CHCFGR1 |= (hdfsdm_channel->Init.Input.Multiplexer | + hdfsdm_channel->Init.Input.DataPacking | + hdfsdm_channel->Init.Input.Pins); + + /* Set serial interface parameters */ + hdfsdm_channel->Instance->CHCFGR1 &= ~(DFSDM_CHCFGR1_SITP | DFSDM_CHCFGR1_SPICKSEL); + hdfsdm_channel->Instance->CHCFGR1 |= (hdfsdm_channel->Init.SerialInterface.Type | + hdfsdm_channel->Init.SerialInterface.SpiClock); + + /* Set analog watchdog parameters */ + hdfsdm_channel->Instance->CHAWSCDR &= ~(DFSDM_CHAWSCDR_AWFORD | DFSDM_CHAWSCDR_AWFOSR); + hdfsdm_channel->Instance->CHAWSCDR |= (hdfsdm_channel->Init.Awd.FilterOrder | + ((hdfsdm_channel->Init.Awd.Oversampling - 1U) << DFSDM_CHAWSCDR_FOSR_OFFSET)); + + /* Set channel offset and right bit shift */ + hdfsdm_channel->Instance->CHCFGR2 &= ~(DFSDM_CHCFGR2_OFFSET | DFSDM_CHCFGR2_DTRBS); + hdfsdm_channel->Instance->CHCFGR2 |= (((uint32_t) hdfsdm_channel->Init.Offset << DFSDM_CHCFGR2_OFFSET_OFFSET) | + (hdfsdm_channel->Init.RightBitShift << DFSDM_CHCFGR2_DTRBS_OFFSET)); + + /* Enable DFSDM channel */ + hdfsdm_channel->Instance->CHCFGR1 |= DFSDM_CHCFGR1_CHEN; + + /* Set DFSDM Channel to ready state */ + hdfsdm_channel->State = HAL_DFSDM_CHANNEL_STATE_READY; + + /* Store channel handle in DFSDM channel handle table */ + a_dfsdm1ChannelHandle[DFSDM_GetChannelFromInstance(hdfsdm_channel->Instance)] = hdfsdm_channel; + + return HAL_OK; +} + +/** + * @brief De-initialize the DFSDM channel. + * @param hdfsdm_channel : DFSDM channel handle. + * @retval HAL status. + */ +HAL_StatusTypeDef HAL_DFSDM_ChannelDeInit(DFSDM_Channel_HandleTypeDef *hdfsdm_channel) +{ + /* Check DFSDM Channel handle */ + if(hdfsdm_channel == NULL) + { + return HAL_ERROR; + } + + /* Check parameters */ + assert_param(IS_DFSDM_CHANNEL_ALL_INSTANCE(hdfsdm_channel->Instance)); + + /* Check that channel has not been already deinitialized */ + if(a_dfsdm1ChannelHandle[DFSDM_GetChannelFromInstance(hdfsdm_channel->Instance)] == NULL) + { + return HAL_ERROR; + } + + /* Disable the DFSDM channel */ + hdfsdm_channel->Instance->CHCFGR1 &= ~(DFSDM_CHCFGR1_CHEN); + + /* Update the channel counter */ + v_dfsdm1ChannelCounter--; + + /* Disable global DFSDM at deinit of last channel */ + if(v_dfsdm1ChannelCounter == 0U) + { + DFSDM1_Channel0->CHCFGR1 &= ~(DFSDM_CHCFGR1_DFSDMEN); + } + + /* Call MSP deinit function */ + HAL_DFSDM_ChannelMspDeInit(hdfsdm_channel); + + /* Set DFSDM Channel in reset state */ + hdfsdm_channel->State = HAL_DFSDM_CHANNEL_STATE_RESET; + + /* Reset channel handle in DFSDM channel handle table */ + a_dfsdm1ChannelHandle[DFSDM_GetChannelFromInstance(hdfsdm_channel->Instance)] = (DFSDM_Channel_HandleTypeDef *) NULL; + + return HAL_OK; +} + +/** + * @brief Initialize the DFSDM channel MSP. + * @param hdfsdm_channel : DFSDM channel handle. + * @retval None + */ +__weak void HAL_DFSDM_ChannelMspInit(DFSDM_Channel_HandleTypeDef *hdfsdm_channel) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hdfsdm_channel); + /* NOTE : This function should not be modified, when the function is needed, + the HAL_DFSDM_ChannelMspInit could be implemented in the user file. + */ +} + +/** + * @brief De-initialize the DFSDM channel MSP. + * @param hdfsdm_channel : DFSDM channel handle. + * @retval None + */ +__weak void HAL_DFSDM_ChannelMspDeInit(DFSDM_Channel_HandleTypeDef *hdfsdm_channel) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hdfsdm_channel); + /* NOTE : This function should not be modified, when the function is needed, + the HAL_DFSDM_ChannelMspDeInit could be implemented in the user file. + */ +} + +/** + * @} + */ + +/** @defgroup DFSDM_Exported_Functions_Group2_Channel Channel operation functions + * @brief Channel operation functions + * +@verbatim + ============================================================================== + ##### Channel operation functions ##### + ============================================================================== + [..] This section provides functions allowing to: + (+) Manage clock absence detector feature. + (+) Manage short circuit detector feature. + (+) Get analog watchdog value. + (+) Modify offset value. +@endverbatim + * @{ + */ + +/** + * @brief This function allows to start clock absence detection in polling mode. + * @note Same mode has to be used for all channels. + * @note If clock is not available on this channel during 5 seconds, + * clock absence detection will not be activated and function + * will return HAL_TIMEOUT error. + * @param hdfsdm_channel : DFSDM channel handle. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_DFSDM_ChannelCkabStart(DFSDM_Channel_HandleTypeDef *hdfsdm_channel) +{ + HAL_StatusTypeDef status = HAL_OK; + uint32_t channel; + uint32_t tickstart; + + /* Check parameters */ + assert_param(IS_DFSDM_CHANNEL_ALL_INSTANCE(hdfsdm_channel->Instance)); + + /* Check DFSDM channel state */ + if(hdfsdm_channel->State != HAL_DFSDM_CHANNEL_STATE_READY) + { + /* Return error status */ + status = HAL_ERROR; + } + else + { + /* Get channel number from channel instance */ + channel = DFSDM_GetChannelFromInstance(hdfsdm_channel->Instance); + + /* Get timeout */ + tickstart = HAL_GetTick(); + + /* Clear clock absence flag */ + while((((DFSDM1_Filter0->FLTISR & DFSDM_FLTISR_CKABF) >> (DFSDM_FLTISR_CKABF_OFFSET + channel)) & 1U) != 0U) + { + DFSDM1_Filter0->FLTICR = (1U << (DFSDM_FLTICR_CLRCKABF_OFFSET + channel)); + + /* Check the Timeout */ + if((HAL_GetTick()-tickstart) > DFSDM_CKAB_TIMEOUT) + { + /* Set timeout status */ + status = HAL_TIMEOUT; + break; + } + } + + if(status == HAL_OK) + { + /* Start clock absence detection */ + hdfsdm_channel->Instance->CHCFGR1 |= DFSDM_CHCFGR1_CKABEN; + } + } + /* Return function status */ + return status; +} + +/** + * @brief This function allows to poll for the clock absence detection. + * @param hdfsdm_channel : DFSDM channel handle. + * @param Timeout : Timeout value in milliseconds. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_DFSDM_ChannelPollForCkab(DFSDM_Channel_HandleTypeDef *hdfsdm_channel, + uint32_t Timeout) +{ + uint32_t tickstart; + uint32_t channel; + + /* Check parameters */ + assert_param(IS_DFSDM_CHANNEL_ALL_INSTANCE(hdfsdm_channel->Instance)); + + /* Check DFSDM channel state */ + if(hdfsdm_channel->State != HAL_DFSDM_CHANNEL_STATE_READY) + { + /* Return error status */ + return HAL_ERROR; + } + else + { + /* Get channel number from channel instance */ + channel = DFSDM_GetChannelFromInstance(hdfsdm_channel->Instance); + + /* Get timeout */ + tickstart = HAL_GetTick(); + + /* Wait clock absence detection */ + while((((DFSDM1_Filter0->FLTISR & DFSDM_FLTISR_CKABF) >> (DFSDM_FLTISR_CKABF_OFFSET + channel)) & 1U) == 0U) + { + /* Check the Timeout */ + if(Timeout != HAL_MAX_DELAY) + { + if((Timeout == 0U) || ((HAL_GetTick()-tickstart) > Timeout)) + { + /* Return timeout status */ + return HAL_TIMEOUT; + } + } + } + + /* Clear clock absence detection flag */ + DFSDM1_Filter0->FLTICR = (1U << (DFSDM_FLTICR_CLRCKABF_OFFSET + channel)); + + /* Return function status */ + return HAL_OK; + } +} + +/** + * @brief This function allows to stop clock absence detection in polling mode. + * @param hdfsdm_channel : DFSDM channel handle. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_DFSDM_ChannelCkabStop(DFSDM_Channel_HandleTypeDef *hdfsdm_channel) +{ + HAL_StatusTypeDef status = HAL_OK; + uint32_t channel; + + /* Check parameters */ + assert_param(IS_DFSDM_CHANNEL_ALL_INSTANCE(hdfsdm_channel->Instance)); + + /* Check DFSDM channel state */ + if(hdfsdm_channel->State != HAL_DFSDM_CHANNEL_STATE_READY) + { + /* Return error status */ + status = HAL_ERROR; + } + else + { + /* Stop clock absence detection */ + hdfsdm_channel->Instance->CHCFGR1 &= ~(DFSDM_CHCFGR1_CKABEN); + + /* Clear clock absence flag */ + channel = DFSDM_GetChannelFromInstance(hdfsdm_channel->Instance); + DFSDM1_Filter0->FLTICR = (1U << (DFSDM_FLTICR_CLRCKABF_OFFSET + channel)); + } + /* Return function status */ + return status; +} + +/** + * @brief This function allows to start clock absence detection in interrupt mode. + * @note Same mode has to be used for all channels. + * @note If clock is not available on this channel during 5 seconds, + * clock absence detection will not be activated and function + * will return HAL_TIMEOUT error. + * @param hdfsdm_channel : DFSDM channel handle. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_DFSDM_ChannelCkabStart_IT(DFSDM_Channel_HandleTypeDef *hdfsdm_channel) +{ + HAL_StatusTypeDef status = HAL_OK; + uint32_t channel; + __IO uint32_t count = DFSDM_CKAB_TIMEOUT * (SystemCoreClock / 36 / 1000); + + /* Check parameters */ + assert_param(IS_DFSDM_CHANNEL_ALL_INSTANCE(hdfsdm_channel->Instance)); + + /* Check DFSDM channel state */ + if(hdfsdm_channel->State != HAL_DFSDM_CHANNEL_STATE_READY) + { + /* Return error status */ + status = HAL_ERROR; + } + else + { + /* Get channel number from channel instance */ + channel = DFSDM_GetChannelFromInstance(hdfsdm_channel->Instance); + + /* Clear clock absence flag */ + do + { + DFSDM1_Filter0->FLTICR = (1U << (DFSDM_FLTICR_CLRCKABF_OFFSET + channel)); + + if (count-- == 0) + { + /* Set timeout status */ + status = HAL_TIMEOUT; + break; + } + } + while ((((DFSDM1_Filter0->FLTISR & DFSDM_FLTISR_CKABF) >> (DFSDM_FLTISR_CKABF_OFFSET + channel)) & 1U) != 0U); + + if(status == HAL_OK) + { + /* Activate clock absence detection interrupt */ + DFSDM1_Filter0->FLTCR2 |= DFSDM_FLTCR2_CKABIE; + + /* Start clock absence detection */ + hdfsdm_channel->Instance->CHCFGR1 |= DFSDM_CHCFGR1_CKABEN; + } + } + /* Return function status */ + return status; +} + +/** + * @brief Clock absence detection callback. + * @param hdfsdm_channel : DFSDM channel handle. + * @retval None + */ +__weak void HAL_DFSDM_ChannelCkabCallback(DFSDM_Channel_HandleTypeDef *hdfsdm_channel) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hdfsdm_channel); + /* NOTE : This function should not be modified, when the callback is needed, + the HAL_DFSDM_ChannelCkabCallback could be implemented in the user file + */ +} + +/** + * @brief This function allows to stop clock absence detection in interrupt mode. + * @note Interrupt will be disabled for all channels + * @param hdfsdm_channel : DFSDM channel handle. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_DFSDM_ChannelCkabStop_IT(DFSDM_Channel_HandleTypeDef *hdfsdm_channel) +{ + HAL_StatusTypeDef status = HAL_OK; + uint32_t channel; + + /* Check parameters */ + assert_param(IS_DFSDM_CHANNEL_ALL_INSTANCE(hdfsdm_channel->Instance)); + + /* Check DFSDM channel state */ + if(hdfsdm_channel->State != HAL_DFSDM_CHANNEL_STATE_READY) + { + /* Return error status */ + status = HAL_ERROR; + } + else + { + /* Stop clock absence detection */ + hdfsdm_channel->Instance->CHCFGR1 &= ~(DFSDM_CHCFGR1_CKABEN); + + /* Clear clock absence flag */ + channel = DFSDM_GetChannelFromInstance(hdfsdm_channel->Instance); + DFSDM1_Filter0->FLTICR = (1U << (DFSDM_FLTICR_CLRCKABF_OFFSET + channel)); + + /* Disable clock absence detection interrupt */ + DFSDM1_Filter0->FLTCR2 &= ~(DFSDM_FLTCR2_CKABIE); + } + /* Return function status */ + return status; +} + +/** + * @brief This function allows to start short circuit detection in polling mode. + * @note Same mode has to be used for all channels + * @param hdfsdm_channel : DFSDM channel handle. + * @param Threshold : Short circuit detector threshold. + * This parameter must be a number between Min_Data = 0 and Max_Data = 255. + * @param BreakSignal : Break signals assigned to short circuit event. + * This parameter can be a values combination of @ref DFSDM_BreakSignals. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_DFSDM_ChannelScdStart(DFSDM_Channel_HandleTypeDef *hdfsdm_channel, + uint32_t Threshold, + uint32_t BreakSignal) +{ + HAL_StatusTypeDef status = HAL_OK; + + /* Check parameters */ + assert_param(IS_DFSDM_CHANNEL_ALL_INSTANCE(hdfsdm_channel->Instance)); + assert_param(IS_DFSDM_CHANNEL_SCD_THRESHOLD(Threshold)); + assert_param(IS_DFSDM_BREAK_SIGNALS(BreakSignal)); + + /* Check DFSDM channel state */ + if(hdfsdm_channel->State != HAL_DFSDM_CHANNEL_STATE_READY) + { + /* Return error status */ + status = HAL_ERROR; + } + else + { + /* Configure threshold and break signals */ + hdfsdm_channel->Instance->CHAWSCDR &= ~(DFSDM_CHAWSCDR_BKSCD | DFSDM_CHAWSCDR_SCDT); + hdfsdm_channel->Instance->CHAWSCDR |= ((BreakSignal << DFSDM_CHAWSCDR_BKSCD_OFFSET) | \ + Threshold); + + /* Start short circuit detection */ + hdfsdm_channel->Instance->CHCFGR1 |= DFSDM_CHCFGR1_SCDEN; + } + /* Return function status */ + return status; +} + +/** + * @brief This function allows to poll for the short circuit detection. + * @param hdfsdm_channel : DFSDM channel handle. + * @param Timeout : Timeout value in milliseconds. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_DFSDM_ChannelPollForScd(DFSDM_Channel_HandleTypeDef *hdfsdm_channel, + uint32_t Timeout) +{ + uint32_t tickstart; + uint32_t channel; + + /* Check parameters */ + assert_param(IS_DFSDM_CHANNEL_ALL_INSTANCE(hdfsdm_channel->Instance)); + + /* Check DFSDM channel state */ + if(hdfsdm_channel->State != HAL_DFSDM_CHANNEL_STATE_READY) + { + /* Return error status */ + return HAL_ERROR; + } + else + { + /* Get channel number from channel instance */ + channel = DFSDM_GetChannelFromInstance(hdfsdm_channel->Instance); + + /* Get timeout */ + tickstart = HAL_GetTick(); + + /* Wait short circuit detection */ + while(((DFSDM1_Filter0->FLTISR & DFSDM_FLTISR_SCDF) >> (DFSDM_FLTISR_SCDF_OFFSET + channel)) == 0U) + { + /* Check the Timeout */ + if(Timeout != HAL_MAX_DELAY) + { + if((Timeout == 0U) || ((HAL_GetTick()-tickstart) > Timeout)) + { + /* Return timeout status */ + return HAL_TIMEOUT; + } + } + } + + /* Clear short circuit detection flag */ + DFSDM1_Filter0->FLTICR = (1U << (DFSDM_FLTICR_CLRSCDF_OFFSET + channel)); + + /* Return function status */ + return HAL_OK; + } +} + +/** + * @brief This function allows to stop short circuit detection in polling mode. + * @param hdfsdm_channel : DFSDM channel handle. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_DFSDM_ChannelScdStop(DFSDM_Channel_HandleTypeDef *hdfsdm_channel) +{ + HAL_StatusTypeDef status = HAL_OK; + uint32_t channel; + + /* Check parameters */ + assert_param(IS_DFSDM_CHANNEL_ALL_INSTANCE(hdfsdm_channel->Instance)); + + /* Check DFSDM channel state */ + if(hdfsdm_channel->State != HAL_DFSDM_CHANNEL_STATE_READY) + { + /* Return error status */ + status = HAL_ERROR; + } + else + { + /* Stop short circuit detection */ + hdfsdm_channel->Instance->CHCFGR1 &= ~(DFSDM_CHCFGR1_SCDEN); + + /* Clear short circuit detection flag */ + channel = DFSDM_GetChannelFromInstance(hdfsdm_channel->Instance); + DFSDM1_Filter0->FLTICR = (1U << (DFSDM_FLTICR_CLRSCDF_OFFSET + channel)); + } + /* Return function status */ + return status; +} + +/** + * @brief This function allows to start short circuit detection in interrupt mode. + * @note Same mode has to be used for all channels + * @param hdfsdm_channel : DFSDM channel handle. + * @param Threshold : Short circuit detector threshold. + * This parameter must be a number between Min_Data = 0 and Max_Data = 255. + * @param BreakSignal : Break signals assigned to short circuit event. + * This parameter can be a values combination of @ref DFSDM_BreakSignals. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_DFSDM_ChannelScdStart_IT(DFSDM_Channel_HandleTypeDef *hdfsdm_channel, + uint32_t Threshold, + uint32_t BreakSignal) +{ + HAL_StatusTypeDef status = HAL_OK; + + /* Check parameters */ + assert_param(IS_DFSDM_CHANNEL_ALL_INSTANCE(hdfsdm_channel->Instance)); + assert_param(IS_DFSDM_CHANNEL_SCD_THRESHOLD(Threshold)); + assert_param(IS_DFSDM_BREAK_SIGNALS(BreakSignal)); + + /* Check DFSDM channel state */ + if(hdfsdm_channel->State != HAL_DFSDM_CHANNEL_STATE_READY) + { + /* Return error status */ + status = HAL_ERROR; + } + else + { + /* Activate short circuit detection interrupt */ + DFSDM1_Filter0->FLTCR2 |= DFSDM_FLTCR2_SCDIE; + + /* Configure threshold and break signals */ + hdfsdm_channel->Instance->CHAWSCDR &= ~(DFSDM_CHAWSCDR_BKSCD | DFSDM_CHAWSCDR_SCDT); + hdfsdm_channel->Instance->CHAWSCDR |= ((BreakSignal << DFSDM_CHAWSCDR_BKSCD_OFFSET) | \ + Threshold); + + /* Start short circuit detection */ + hdfsdm_channel->Instance->CHCFGR1 |= DFSDM_CHCFGR1_SCDEN; + } + /* Return function status */ + return status; +} + +/** + * @brief Short circuit detection callback. + * @param hdfsdm_channel : DFSDM channel handle. + * @retval None + */ +__weak void HAL_DFSDM_ChannelScdCallback(DFSDM_Channel_HandleTypeDef *hdfsdm_channel) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hdfsdm_channel); + /* NOTE : This function should not be modified, when the callback is needed, + the HAL_DFSDM_ChannelScdCallback could be implemented in the user file + */ +} + +/** + * @brief This function allows to stop short circuit detection in interrupt mode. + * @note Interrupt will be disabled for all channels + * @param hdfsdm_channel : DFSDM channel handle. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_DFSDM_ChannelScdStop_IT(DFSDM_Channel_HandleTypeDef *hdfsdm_channel) +{ + HAL_StatusTypeDef status = HAL_OK; + uint32_t channel; + + /* Check parameters */ + assert_param(IS_DFSDM_CHANNEL_ALL_INSTANCE(hdfsdm_channel->Instance)); + + /* Check DFSDM channel state */ + if(hdfsdm_channel->State != HAL_DFSDM_CHANNEL_STATE_READY) + { + /* Return error status */ + status = HAL_ERROR; + } + else + { + /* Stop short circuit detection */ + hdfsdm_channel->Instance->CHCFGR1 &= ~(DFSDM_CHCFGR1_SCDEN); + + /* Clear short circuit detection flag */ + channel = DFSDM_GetChannelFromInstance(hdfsdm_channel->Instance); + DFSDM1_Filter0->FLTICR = (1U << (DFSDM_FLTICR_CLRSCDF_OFFSET + channel)); + + /* Disable short circuit detection interrupt */ + DFSDM1_Filter0->FLTCR2 &= ~(DFSDM_FLTCR2_SCDIE); + } + /* Return function status */ + return status; +} + +/** + * @brief This function allows to get channel analog watchdog value. + * @param hdfsdm_channel : DFSDM channel handle. + * @retval Channel analog watchdog value. + */ +int16_t HAL_DFSDM_ChannelGetAwdValue(DFSDM_Channel_HandleTypeDef *hdfsdm_channel) +{ + return (int16_t) hdfsdm_channel->Instance->CHWDATAR; +} + +/** + * @brief This function allows to modify channel offset value. + * @param hdfsdm_channel : DFSDM channel handle. + * @param Offset : DFSDM channel offset. + * This parameter must be a number between Min_Data = -8388608 and Max_Data = 8388607. + * @retval HAL status. + */ +HAL_StatusTypeDef HAL_DFSDM_ChannelModifyOffset(DFSDM_Channel_HandleTypeDef *hdfsdm_channel, + int32_t Offset) +{ + HAL_StatusTypeDef status = HAL_OK; + + /* Check parameters */ + assert_param(IS_DFSDM_CHANNEL_ALL_INSTANCE(hdfsdm_channel->Instance)); + assert_param(IS_DFSDM_CHANNEL_OFFSET(Offset)); + + /* Check DFSDM channel state */ + if(hdfsdm_channel->State != HAL_DFSDM_CHANNEL_STATE_READY) + { + /* Return error status */ + status = HAL_ERROR; + } + else + { + /* Modify channel offset */ + hdfsdm_channel->Instance->CHCFGR2 &= ~(DFSDM_CHCFGR2_OFFSET); + hdfsdm_channel->Instance->CHCFGR2 |= ((uint32_t) Offset << DFSDM_CHCFGR2_OFFSET_OFFSET); + } + /* Return function status */ + return status; +} + +/** + * @} + */ + +/** @defgroup DFSDM_Exported_Functions_Group3_Channel Channel state function + * @brief Channel state function + * +@verbatim + ============================================================================== + ##### Channel state function ##### + ============================================================================== + [..] This section provides function allowing to: + (+) Get channel handle state. +@endverbatim + * @{ + */ + +/** + * @brief This function allows to get the current DFSDM channel handle state. + * @param hdfsdm_channel : DFSDM channel handle. + * @retval DFSDM channel state. + */ +HAL_DFSDM_Channel_StateTypeDef HAL_DFSDM_ChannelGetState(DFSDM_Channel_HandleTypeDef *hdfsdm_channel) +{ + /* Return DFSDM channel handle state */ + return hdfsdm_channel->State; +} + +/** + * @} + */ + +/** @defgroup DFSDM_Exported_Functions_Group1_Filter Filter initialization and de-initialization functions + * @brief Filter initialization and de-initialization functions + * +@verbatim + ============================================================================== + ##### Filter initialization and de-initialization functions ##### + ============================================================================== + [..] This section provides functions allowing to: + (+) Initialize the DFSDM filter. + (+) De-initialize the DFSDM filter. +@endverbatim + * @{ + */ + +/** + * @brief Initialize the DFSDM filter according to the specified parameters + * in the DFSDM_FilterInitTypeDef structure and initialize the associated handle. + * @param hdfsdm_filter : DFSDM filter handle. + * @retval HAL status. + */ +HAL_StatusTypeDef HAL_DFSDM_FilterInit(DFSDM_Filter_HandleTypeDef *hdfsdm_filter) +{ + /* Check DFSDM Channel handle */ + if(hdfsdm_filter == NULL) + { + return HAL_ERROR; + } + + /* Check parameters */ + assert_param(IS_DFSDM_FILTER_ALL_INSTANCE(hdfsdm_filter->Instance)); + assert_param(IS_DFSDM_FILTER_REG_TRIGGER(hdfsdm_filter->Init.RegularParam.Trigger)); + assert_param(IS_FUNCTIONAL_STATE(hdfsdm_filter->Init.RegularParam.FastMode)); + assert_param(IS_FUNCTIONAL_STATE(hdfsdm_filter->Init.RegularParam.DmaMode)); + assert_param(IS_DFSDM_FILTER_INJ_TRIGGER(hdfsdm_filter->Init.InjectedParam.Trigger)); + assert_param(IS_FUNCTIONAL_STATE(hdfsdm_filter->Init.InjectedParam.ScanMode)); + assert_param(IS_FUNCTIONAL_STATE(hdfsdm_filter->Init.InjectedParam.DmaMode)); + assert_param(IS_DFSDM_FILTER_SINC_ORDER(hdfsdm_filter->Init.FilterParam.SincOrder)); + assert_param(IS_DFSDM_FILTER_OVS_RATIO(hdfsdm_filter->Init.FilterParam.Oversampling)); + assert_param(IS_DFSDM_FILTER_INTEGRATOR_OVS_RATIO(hdfsdm_filter->Init.FilterParam.IntOversampling)); + + /* Check parameters compatibility */ + if((hdfsdm_filter->Instance == DFSDM1_Filter0) && + ((hdfsdm_filter->Init.RegularParam.Trigger == DFSDM_FILTER_SYNC_TRIGGER) || + (hdfsdm_filter->Init.InjectedParam.Trigger == DFSDM_FILTER_SYNC_TRIGGER))) + { + return HAL_ERROR; + } + + /* Initialize DFSDM filter variables with default values */ + hdfsdm_filter->RegularContMode = DFSDM_CONTINUOUS_CONV_OFF; + hdfsdm_filter->InjectedChannelsNbr = 1U; + hdfsdm_filter->InjConvRemaining = 1U; + hdfsdm_filter->ErrorCode = DFSDM_FILTER_ERROR_NONE; + + /* Call MSP init function */ + HAL_DFSDM_FilterMspInit(hdfsdm_filter); + + /* Set regular parameters */ + hdfsdm_filter->Instance->FLTCR1 &= ~(DFSDM_FLTCR1_RSYNC); + if(hdfsdm_filter->Init.RegularParam.FastMode == ENABLE) + { + hdfsdm_filter->Instance->FLTCR1 |= DFSDM_FLTCR1_FAST; + } + else + { + hdfsdm_filter->Instance->FLTCR1 &= ~(DFSDM_FLTCR1_FAST); + } + + if(hdfsdm_filter->Init.RegularParam.DmaMode == ENABLE) + { + hdfsdm_filter->Instance->FLTCR1 |= DFSDM_FLTCR1_RDMAEN; + } + else + { + hdfsdm_filter->Instance->FLTCR1 &= ~(DFSDM_FLTCR1_RDMAEN); + } + + /* Set injected parameters */ + hdfsdm_filter->Instance->FLTCR1 &= ~(DFSDM_FLTCR1_JSYNC | DFSDM_FLTCR1_JEXTEN | DFSDM_FLTCR1_JEXTSEL); + if(hdfsdm_filter->Init.InjectedParam.Trigger == DFSDM_FILTER_EXT_TRIGGER) + { + assert_param(IS_DFSDM_FILTER_EXT_TRIG(hdfsdm_filter->Init.InjectedParam.ExtTrigger)); + assert_param(IS_DFSDM_FILTER_EXT_TRIG_EDGE(hdfsdm_filter->Init.InjectedParam.ExtTriggerEdge)); + hdfsdm_filter->Instance->FLTCR1 |= (hdfsdm_filter->Init.InjectedParam.ExtTrigger); + } + + if(hdfsdm_filter->Init.InjectedParam.ScanMode == ENABLE) + { + hdfsdm_filter->Instance->FLTCR1 |= DFSDM_FLTCR1_JSCAN; + } + else + { + hdfsdm_filter->Instance->FLTCR1 &= ~(DFSDM_FLTCR1_JSCAN); + } + + if(hdfsdm_filter->Init.InjectedParam.DmaMode == ENABLE) + { + hdfsdm_filter->Instance->FLTCR1 |= DFSDM_FLTCR1_JDMAEN; + } + else + { + hdfsdm_filter->Instance->FLTCR1 &= ~(DFSDM_FLTCR1_JDMAEN); + } + + /* Set filter parameters */ + hdfsdm_filter->Instance->FLTFCR &= ~(DFSDM_FLTFCR_FORD | DFSDM_FLTFCR_FOSR | DFSDM_FLTFCR_IOSR); + hdfsdm_filter->Instance->FLTFCR |= (hdfsdm_filter->Init.FilterParam.SincOrder | + ((hdfsdm_filter->Init.FilterParam.Oversampling - 1U) << DFSDM_FLTFCR_FOSR_OFFSET) | + (hdfsdm_filter->Init.FilterParam.IntOversampling - 1U)); + + /* Store regular and injected triggers and injected scan mode*/ + hdfsdm_filter->RegularTrigger = hdfsdm_filter->Init.RegularParam.Trigger; + hdfsdm_filter->InjectedTrigger = hdfsdm_filter->Init.InjectedParam.Trigger; + hdfsdm_filter->ExtTriggerEdge = hdfsdm_filter->Init.InjectedParam.ExtTriggerEdge; + hdfsdm_filter->InjectedScanMode = hdfsdm_filter->Init.InjectedParam.ScanMode; + + /* Enable DFSDM filter */ + hdfsdm_filter->Instance->FLTCR1 |= DFSDM_FLTCR1_DFEN; + + /* Set DFSDM filter to ready state */ + hdfsdm_filter->State = HAL_DFSDM_FILTER_STATE_READY; + + return HAL_OK; +} + +/** + * @brief De-initializes the DFSDM filter. + * @param hdfsdm_filter : DFSDM filter handle. + * @retval HAL status. + */ +HAL_StatusTypeDef HAL_DFSDM_FilterDeInit(DFSDM_Filter_HandleTypeDef *hdfsdm_filter) +{ + /* Check DFSDM filter handle */ + if(hdfsdm_filter == NULL) + { + return HAL_ERROR; + } + + /* Check parameters */ + assert_param(IS_DFSDM_FILTER_ALL_INSTANCE(hdfsdm_filter->Instance)); + + /* Disable the DFSDM filter */ + hdfsdm_filter->Instance->FLTCR1 &= ~(DFSDM_FLTCR1_DFEN); + + /* Call MSP deinit function */ + HAL_DFSDM_FilterMspDeInit(hdfsdm_filter); + + /* Set DFSDM filter in reset state */ + hdfsdm_filter->State = HAL_DFSDM_FILTER_STATE_RESET; + + return HAL_OK; +} + +/** + * @brief Initializes the DFSDM filter MSP. + * @param hdfsdm_filter : DFSDM filter handle. + * @retval None + */ +__weak void HAL_DFSDM_FilterMspInit(DFSDM_Filter_HandleTypeDef *hdfsdm_filter) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hdfsdm_filter); + /* NOTE : This function should not be modified, when the function is needed, + the HAL_DFSDM_FilterMspInit could be implemented in the user file. + */ +} + +/** + * @brief De-initializes the DFSDM filter MSP. + * @param hdfsdm_filter : DFSDM filter handle. + * @retval None + */ +__weak void HAL_DFSDM_FilterMspDeInit(DFSDM_Filter_HandleTypeDef *hdfsdm_filter) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hdfsdm_filter); + /* NOTE : This function should not be modified, when the function is needed, + the HAL_DFSDM_FilterMspDeInit could be implemented in the user file. + */ +} + +/** + * @} + */ + +/** @defgroup DFSDM_Exported_Functions_Group2_Filter Filter control functions + * @brief Filter control functions + * +@verbatim + ============================================================================== + ##### Filter control functions ##### + ============================================================================== + [..] This section provides functions allowing to: + (+) Select channel and enable/disable continuous mode for regular conversion. + (+) Select channels for injected conversion. +@endverbatim + * @{ + */ + +/** + * @brief This function allows to select channel and to enable/disable + * continuous mode for regular conversion. + * @param hdfsdm_filter : DFSDM filter handle. + * @param Channel : Channel for regular conversion. + * This parameter can be a value of @ref DFSDM_Channel_Selection. + * @param ContinuousMode : Enable/disable continuous mode for regular conversion. + * This parameter can be a value of @ref DFSDM_ContinuousMode. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_DFSDM_FilterConfigRegChannel(DFSDM_Filter_HandleTypeDef *hdfsdm_filter, + uint32_t Channel, + uint32_t ContinuousMode) +{ + HAL_StatusTypeDef status = HAL_OK; + + /* Check parameters */ + assert_param(IS_DFSDM_FILTER_ALL_INSTANCE(hdfsdm_filter->Instance)); + assert_param(IS_DFSDM_REGULAR_CHANNEL(Channel)); + assert_param(IS_DFSDM_CONTINUOUS_MODE(ContinuousMode)); + + /* Check DFSDM filter state */ + if((hdfsdm_filter->State != HAL_DFSDM_FILTER_STATE_RESET) && + (hdfsdm_filter->State != HAL_DFSDM_FILTER_STATE_ERROR)) + { + /* Configure channel and continuous mode for regular conversion */ + hdfsdm_filter->Instance->FLTCR1 &= ~(DFSDM_FLTCR1_RCH | DFSDM_FLTCR1_RCONT); + if(ContinuousMode == DFSDM_CONTINUOUS_CONV_ON) + { + hdfsdm_filter->Instance->FLTCR1 |= (uint32_t) (((Channel & DFSDM_MSB_MASK) << DFSDM_FLTCR1_MSB_RCH_OFFSET) | + DFSDM_FLTCR1_RCONT); + } + else + { + hdfsdm_filter->Instance->FLTCR1 |= (uint32_t) ((Channel & DFSDM_MSB_MASK) << DFSDM_FLTCR1_MSB_RCH_OFFSET); + } + /* Store continuous mode information */ + hdfsdm_filter->RegularContMode = ContinuousMode; + } + else + { + status = HAL_ERROR; + } + + /* Return function status */ + return status; +} + +/** + * @brief This function allows to select channels for injected conversion. + * @param hdfsdm_filter : DFSDM filter handle. + * @param Channel : Channels for injected conversion. + * This parameter can be a values combination of @ref DFSDM_Channel_Selection. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_DFSDM_FilterConfigInjChannel(DFSDM_Filter_HandleTypeDef *hdfsdm_filter, + uint32_t Channel) +{ + HAL_StatusTypeDef status = HAL_OK; + + /* Check parameters */ + assert_param(IS_DFSDM_FILTER_ALL_INSTANCE(hdfsdm_filter->Instance)); + assert_param(IS_DFSDM_INJECTED_CHANNEL(Channel)); + + /* Check DFSDM filter state */ + if((hdfsdm_filter->State != HAL_DFSDM_FILTER_STATE_RESET) && + (hdfsdm_filter->State != HAL_DFSDM_FILTER_STATE_ERROR)) + { + /* Configure channel for injected conversion */ + hdfsdm_filter->Instance->FLTJCHGR = (uint32_t) (Channel & DFSDM_LSB_MASK); + /* Store number of injected channels */ + hdfsdm_filter->InjectedChannelsNbr = DFSDM_GetInjChannelsNbr(Channel); + /* Update number of injected channels remaining */ + hdfsdm_filter->InjConvRemaining = (hdfsdm_filter->InjectedScanMode == ENABLE) ? \ + hdfsdm_filter->InjectedChannelsNbr : 1U; + } + else + { + status = HAL_ERROR; + } + /* Return function status */ + return status; +} + +/** + * @} + */ + +/** @defgroup DFSDM_Exported_Functions_Group3_Filter Filter operation functions + * @brief Filter operation functions + * +@verbatim + ============================================================================== + ##### Filter operation functions ##### + ============================================================================== + [..] This section provides functions allowing to: + (+) Start conversion of regular/injected channel. + (+) Poll for the end of regular/injected conversion. + (+) Stop conversion of regular/injected channel. + (+) Start conversion of regular/injected channel and enable interrupt. + (+) Call the callback functions at the end of regular/injected conversions. + (+) Stop conversion of regular/injected channel and disable interrupt. + (+) Start conversion of regular/injected channel and enable DMA transfer. + (+) Stop conversion of regular/injected channel and disable DMA transfer. + (+) Start analog watchdog and enable interrupt. + (+) Call the callback function when analog watchdog occurs. + (+) Stop analog watchdog and disable interrupt. + (+) Start extreme detector. + (+) Stop extreme detector. + (+) Get result of regular channel conversion. + (+) Get result of injected channel conversion. + (+) Get extreme detector maximum and minimum values. + (+) Get conversion time. + (+) Handle DFSDM interrupt request. +@endverbatim + * @{ + */ + +/** + * @brief This function allows to start regular conversion in polling mode. + * @note This function should be called only when DFSDM filter instance is + * in idle state or if injected conversion is ongoing. + * @param hdfsdm_filter : DFSDM filter handle. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_DFSDM_FilterRegularStart(DFSDM_Filter_HandleTypeDef *hdfsdm_filter) +{ + HAL_StatusTypeDef status = HAL_OK; + + /* Check parameters */ + assert_param(IS_DFSDM_FILTER_ALL_INSTANCE(hdfsdm_filter->Instance)); + + /* Check DFSDM filter state */ + if((hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_READY) || \ + (hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_INJ)) + { + /* Start regular conversion */ + DFSDM_RegConvStart(hdfsdm_filter); + } + else + { + status = HAL_ERROR; + } + /* Return function status */ + return status; +} + +/** + * @brief This function allows to poll for the end of regular conversion. + * @note This function should be called only if regular conversion is ongoing. + * @param hdfsdm_filter : DFSDM filter handle. + * @param Timeout : Timeout value in milliseconds. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_DFSDM_FilterPollForRegConversion(DFSDM_Filter_HandleTypeDef *hdfsdm_filter, + uint32_t Timeout) +{ + uint32_t tickstart; + + /* Check parameters */ + assert_param(IS_DFSDM_FILTER_ALL_INSTANCE(hdfsdm_filter->Instance)); + + /* Check DFSDM filter state */ + if((hdfsdm_filter->State != HAL_DFSDM_FILTER_STATE_REG) && \ + (hdfsdm_filter->State != HAL_DFSDM_FILTER_STATE_REG_INJ)) + { + /* Return error status */ + return HAL_ERROR; + } + else + { + /* Get timeout */ + tickstart = HAL_GetTick(); + + /* Wait end of regular conversion */ + while((hdfsdm_filter->Instance->FLTISR & DFSDM_FLTISR_REOCF) != DFSDM_FLTISR_REOCF) + { + /* Check the Timeout */ + if(Timeout != HAL_MAX_DELAY) + { + if((Timeout == 0U) || ((HAL_GetTick()-tickstart) > Timeout)) + { + /* Return timeout status */ + return HAL_TIMEOUT; + } + } + } + /* Check if overrun occurs */ + if((hdfsdm_filter->Instance->FLTISR & DFSDM_FLTISR_ROVRF) == DFSDM_FLTISR_ROVRF) + { + /* Update error code and call error callback */ + hdfsdm_filter->ErrorCode = DFSDM_FILTER_ERROR_REGULAR_OVERRUN; + HAL_DFSDM_FilterErrorCallback(hdfsdm_filter); + + /* Clear regular overrun flag */ + hdfsdm_filter->Instance->FLTICR = DFSDM_FLTICR_CLRROVRF; + } + /* Update DFSDM filter state only if not continuous conversion and SW trigger */ + if((hdfsdm_filter->RegularContMode == DFSDM_CONTINUOUS_CONV_OFF) && \ + (hdfsdm_filter->RegularTrigger == DFSDM_FILTER_SW_TRIGGER)) + { + hdfsdm_filter->State = (hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_REG) ? \ + HAL_DFSDM_FILTER_STATE_READY : HAL_DFSDM_FILTER_STATE_INJ; + } + /* Return function status */ + return HAL_OK; + } +} + +/** + * @brief This function allows to stop regular conversion in polling mode. + * @note This function should be called only if regular conversion is ongoing. + * @param hdfsdm_filter : DFSDM filter handle. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_DFSDM_FilterRegularStop(DFSDM_Filter_HandleTypeDef *hdfsdm_filter) +{ + HAL_StatusTypeDef status = HAL_OK; + + /* Check parameters */ + assert_param(IS_DFSDM_FILTER_ALL_INSTANCE(hdfsdm_filter->Instance)); + + /* Check DFSDM filter state */ + if((hdfsdm_filter->State != HAL_DFSDM_FILTER_STATE_REG) && \ + (hdfsdm_filter->State != HAL_DFSDM_FILTER_STATE_REG_INJ)) + { + /* Return error status */ + status = HAL_ERROR; + } + else + { + /* Stop regular conversion */ + DFSDM_RegConvStop(hdfsdm_filter); + } + /* Return function status */ + return status; +} + +/** + * @brief This function allows to start regular conversion in interrupt mode. + * @note This function should be called only when DFSDM filter instance is + * in idle state or if injected conversion is ongoing. + * @param hdfsdm_filter : DFSDM filter handle. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_DFSDM_FilterRegularStart_IT(DFSDM_Filter_HandleTypeDef *hdfsdm_filter) +{ + HAL_StatusTypeDef status = HAL_OK; + + /* Check parameters */ + assert_param(IS_DFSDM_FILTER_ALL_INSTANCE(hdfsdm_filter->Instance)); + + /* Check DFSDM filter state */ + if((hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_READY) || \ + (hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_INJ)) + { + /* Enable interrupts for regular conversions */ + hdfsdm_filter->Instance->FLTCR2 |= (DFSDM_FLTCR2_REOCIE | DFSDM_FLTCR2_ROVRIE); + + /* Start regular conversion */ + DFSDM_RegConvStart(hdfsdm_filter); + } + else + { + status = HAL_ERROR; + } + /* Return function status */ + return status; +} + +/** + * @brief This function allows to stop regular conversion in interrupt mode. + * @note This function should be called only if regular conversion is ongoing. + * @param hdfsdm_filter : DFSDM filter handle. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_DFSDM_FilterRegularStop_IT(DFSDM_Filter_HandleTypeDef *hdfsdm_filter) +{ + HAL_StatusTypeDef status = HAL_OK; + + /* Check parameters */ + assert_param(IS_DFSDM_FILTER_ALL_INSTANCE(hdfsdm_filter->Instance)); + + /* Check DFSDM filter state */ + if((hdfsdm_filter->State != HAL_DFSDM_FILTER_STATE_REG) && \ + (hdfsdm_filter->State != HAL_DFSDM_FILTER_STATE_REG_INJ)) + { + /* Return error status */ + status = HAL_ERROR; + } + else + { + /* Disable interrupts for regular conversions */ + hdfsdm_filter->Instance->FLTCR2 &= ~(DFSDM_FLTCR2_REOCIE | DFSDM_FLTCR2_ROVRIE); + + /* Stop regular conversion */ + DFSDM_RegConvStop(hdfsdm_filter); + } + /* Return function status */ + return status; +} + +/** + * @brief This function allows to start regular conversion in DMA mode. + * @note This function should be called only when DFSDM filter instance is + * in idle state or if injected conversion is ongoing. + * Please note that data on buffer will contain signed regular conversion + * value on 24 most significant bits and corresponding channel on 3 least + * significant bits. + * @param hdfsdm_filter : DFSDM filter handle. + * @param pData : The destination buffer address. + * @param Length : The length of data to be transferred from DFSDM filter to memory. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_DFSDM_FilterRegularStart_DMA(DFSDM_Filter_HandleTypeDef *hdfsdm_filter, + int32_t *pData, + uint32_t Length) +{ + HAL_StatusTypeDef status = HAL_OK; + + /* Check parameters */ + assert_param(IS_DFSDM_FILTER_ALL_INSTANCE(hdfsdm_filter->Instance)); + + /* Check destination address and length */ + if((pData == NULL) || (Length == 0U)) + { + status = HAL_ERROR; + } + /* Check that DMA is enabled for regular conversion */ + else if((hdfsdm_filter->Instance->FLTCR1 & DFSDM_FLTCR1_RDMAEN) != DFSDM_FLTCR1_RDMAEN) + { + status = HAL_ERROR; + } + /* Check parameters compatibility */ + else if((hdfsdm_filter->RegularTrigger == DFSDM_FILTER_SW_TRIGGER) && \ + (hdfsdm_filter->RegularContMode == DFSDM_CONTINUOUS_CONV_OFF) && \ + (hdfsdm_filter->hdmaReg->Init.Mode == DMA_NORMAL) && \ + (Length != 1U)) + { + status = HAL_ERROR; + } + else if((hdfsdm_filter->RegularTrigger == DFSDM_FILTER_SW_TRIGGER) && \ + (hdfsdm_filter->RegularContMode == DFSDM_CONTINUOUS_CONV_OFF) && \ + (hdfsdm_filter->hdmaReg->Init.Mode == DMA_CIRCULAR)) + { + status = HAL_ERROR; + } + /* Check DFSDM filter state */ + else if((hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_READY) || \ + (hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_INJ)) + { + /* Set callbacks on DMA handler */ + hdfsdm_filter->hdmaReg->XferCpltCallback = DFSDM_DMARegularConvCplt; + hdfsdm_filter->hdmaReg->XferErrorCallback = DFSDM_DMAError; + hdfsdm_filter->hdmaReg->XferHalfCpltCallback = (hdfsdm_filter->hdmaReg->Init.Mode == DMA_CIRCULAR) ?\ + DFSDM_DMARegularHalfConvCplt : NULL; + + /* Start DMA in interrupt mode */ + if(HAL_DMA_Start_IT(hdfsdm_filter->hdmaReg, (uint32_t)&hdfsdm_filter->Instance->FLTRDATAR, \ + (uint32_t) pData, Length) != HAL_OK) + { + /* Set DFSDM filter in error state */ + hdfsdm_filter->State = HAL_DFSDM_FILTER_STATE_ERROR; + status = HAL_ERROR; + } + else + { + /* Start regular conversion */ + DFSDM_RegConvStart(hdfsdm_filter); + } + } + else + { + status = HAL_ERROR; + } + /* Return function status */ + return status; +} + +/** + * @brief This function allows to start regular conversion in DMA mode and to get + * only the 16 most significant bits of conversion. + * @note This function should be called only when DFSDM filter instance is + * in idle state or if injected conversion is ongoing. + * Please note that data on buffer will contain signed 16 most significant + * bits of regular conversion. + * @param hdfsdm_filter : DFSDM filter handle. + * @param pData : The destination buffer address. + * @param Length : The length of data to be transferred from DFSDM filter to memory. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_DFSDM_FilterRegularMsbStart_DMA(DFSDM_Filter_HandleTypeDef *hdfsdm_filter, + int16_t *pData, + uint32_t Length) +{ + HAL_StatusTypeDef status = HAL_OK; + + /* Check parameters */ + assert_param(IS_DFSDM_FILTER_ALL_INSTANCE(hdfsdm_filter->Instance)); + + /* Check destination address and length */ + if((pData == NULL) || (Length == 0U)) + { + status = HAL_ERROR; + } + /* Check that DMA is enabled for regular conversion */ + else if((hdfsdm_filter->Instance->FLTCR1 & DFSDM_FLTCR1_RDMAEN) != DFSDM_FLTCR1_RDMAEN) + { + status = HAL_ERROR; + } + /* Check parameters compatibility */ + else if((hdfsdm_filter->RegularTrigger == DFSDM_FILTER_SW_TRIGGER) && \ + (hdfsdm_filter->RegularContMode == DFSDM_CONTINUOUS_CONV_OFF) && \ + (hdfsdm_filter->hdmaReg->Init.Mode == DMA_NORMAL) && \ + (Length != 1U)) + { + status = HAL_ERROR; + } + else if((hdfsdm_filter->RegularTrigger == DFSDM_FILTER_SW_TRIGGER) && \ + (hdfsdm_filter->RegularContMode == DFSDM_CONTINUOUS_CONV_OFF) && \ + (hdfsdm_filter->hdmaReg->Init.Mode == DMA_CIRCULAR)) + { + status = HAL_ERROR; + } + /* Check DFSDM filter state */ + else if((hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_READY) || \ + (hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_INJ)) + { + /* Set callbacks on DMA handler */ + hdfsdm_filter->hdmaReg->XferCpltCallback = DFSDM_DMARegularConvCplt; + hdfsdm_filter->hdmaReg->XferErrorCallback = DFSDM_DMAError; + hdfsdm_filter->hdmaReg->XferHalfCpltCallback = (hdfsdm_filter->hdmaReg->Init.Mode == DMA_CIRCULAR) ?\ + DFSDM_DMARegularHalfConvCplt : NULL; + + /* Start DMA in interrupt mode */ + if(HAL_DMA_Start_IT(hdfsdm_filter->hdmaReg, (uint32_t)(&hdfsdm_filter->Instance->FLTRDATAR) + 2U, \ + (uint32_t) pData, Length) != HAL_OK) + { + /* Set DFSDM filter in error state */ + hdfsdm_filter->State = HAL_DFSDM_FILTER_STATE_ERROR; + status = HAL_ERROR; + } + else + { + /* Start regular conversion */ + DFSDM_RegConvStart(hdfsdm_filter); + } + } + else + { + status = HAL_ERROR; + } + /* Return function status */ + return status; +} + +/** + * @brief This function allows to stop regular conversion in DMA mode. + * @note This function should be called only if regular conversion is ongoing. + * @param hdfsdm_filter : DFSDM filter handle. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_DFSDM_FilterRegularStop_DMA(DFSDM_Filter_HandleTypeDef *hdfsdm_filter) +{ + HAL_StatusTypeDef status = HAL_OK; + + /* Check parameters */ + assert_param(IS_DFSDM_FILTER_ALL_INSTANCE(hdfsdm_filter->Instance)); + + /* Check DFSDM filter state */ + if((hdfsdm_filter->State != HAL_DFSDM_FILTER_STATE_REG) && \ + (hdfsdm_filter->State != HAL_DFSDM_FILTER_STATE_REG_INJ)) + { + /* Return error status */ + status = HAL_ERROR; + } + else + { + /* Stop current DMA transfer */ + if(HAL_DMA_Abort(hdfsdm_filter->hdmaReg) != HAL_OK) + { + /* Set DFSDM filter in error state */ + hdfsdm_filter->State = HAL_DFSDM_FILTER_STATE_ERROR; + status = HAL_ERROR; + } + else + { + /* Stop regular conversion */ + DFSDM_RegConvStop(hdfsdm_filter); + } + } + /* Return function status */ + return status; +} + +/** + * @brief This function allows to get regular conversion value. + * @param hdfsdm_filter : DFSDM filter handle. + * @param Channel : Corresponding channel of regular conversion. + * @retval Regular conversion value + */ +int32_t HAL_DFSDM_FilterGetRegularValue(DFSDM_Filter_HandleTypeDef *hdfsdm_filter, + uint32_t *Channel) +{ + uint32_t reg = 0U; + int32_t value = 0U; + + /* Check parameters */ + assert_param(IS_DFSDM_FILTER_ALL_INSTANCE(hdfsdm_filter->Instance)); + assert_param(Channel != NULL); + + /* Get value of data register for regular channel */ + reg = hdfsdm_filter->Instance->FLTRDATAR; + + /* Extract channel and regular conversion value */ + *Channel = (reg & DFSDM_FLTRDATAR_RDATACH); + value = ((reg & DFSDM_FLTRDATAR_RDATA) >> DFSDM_FLTRDATAR_DATA_OFFSET); + + /* return regular conversion value */ + return value; +} + +/** + * @brief This function allows to start injected conversion in polling mode. + * @note This function should be called only when DFSDM filter instance is + * in idle state or if regular conversion is ongoing. + * @param hdfsdm_filter : DFSDM filter handle. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_DFSDM_FilterInjectedStart(DFSDM_Filter_HandleTypeDef *hdfsdm_filter) +{ + HAL_StatusTypeDef status = HAL_OK; + + /* Check parameters */ + assert_param(IS_DFSDM_FILTER_ALL_INSTANCE(hdfsdm_filter->Instance)); + + /* Check DFSDM filter state */ + if((hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_READY) || \ + (hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_REG)) + { + /* Start injected conversion */ + DFSDM_InjConvStart(hdfsdm_filter); + } + else + { + status = HAL_ERROR; + } + /* Return function status */ + return status; +} + +/** + * @brief This function allows to poll for the end of injected conversion. + * @note This function should be called only if injected conversion is ongoing. + * @param hdfsdm_filter : DFSDM filter handle. + * @param Timeout : Timeout value in milliseconds. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_DFSDM_FilterPollForInjConversion(DFSDM_Filter_HandleTypeDef *hdfsdm_filter, + uint32_t Timeout) +{ + uint32_t tickstart; + + /* Check parameters */ + assert_param(IS_DFSDM_FILTER_ALL_INSTANCE(hdfsdm_filter->Instance)); + + /* Check DFSDM filter state */ + if((hdfsdm_filter->State != HAL_DFSDM_FILTER_STATE_INJ) && \ + (hdfsdm_filter->State != HAL_DFSDM_FILTER_STATE_REG_INJ)) + { + /* Return error status */ + return HAL_ERROR; + } + else + { + /* Get timeout */ + tickstart = HAL_GetTick(); + + /* Wait end of injected conversions */ + while((hdfsdm_filter->Instance->FLTISR & DFSDM_FLTISR_JEOCF) != DFSDM_FLTISR_JEOCF) + { + /* Check the Timeout */ + if(Timeout != HAL_MAX_DELAY) + { + if((Timeout == 0U) || ((HAL_GetTick()-tickstart) > Timeout)) + { + /* Return timeout status */ + return HAL_TIMEOUT; + } + } + } + /* Check if overrun occurs */ + if((hdfsdm_filter->Instance->FLTISR & DFSDM_FLTISR_JOVRF) == DFSDM_FLTISR_JOVRF) + { + /* Update error code and call error callback */ + hdfsdm_filter->ErrorCode = DFSDM_FILTER_ERROR_INJECTED_OVERRUN; + HAL_DFSDM_FilterErrorCallback(hdfsdm_filter); + + /* Clear injected overrun flag */ + hdfsdm_filter->Instance->FLTICR = DFSDM_FLTICR_CLRJOVRF; + } + + /* Update remaining injected conversions */ + hdfsdm_filter->InjConvRemaining--; + if(hdfsdm_filter->InjConvRemaining == 0U) + { + /* Update DFSDM filter state only if trigger is software */ + if(hdfsdm_filter->InjectedTrigger == DFSDM_FILTER_SW_TRIGGER) + { + hdfsdm_filter->State = (hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_INJ) ? \ + HAL_DFSDM_FILTER_STATE_READY : HAL_DFSDM_FILTER_STATE_REG; + } + + /* end of injected sequence, reset the value */ + hdfsdm_filter->InjConvRemaining = (hdfsdm_filter->InjectedScanMode == ENABLE) ? \ + hdfsdm_filter->InjectedChannelsNbr : 1U; + } + + /* Return function status */ + return HAL_OK; + } +} + +/** + * @brief This function allows to stop injected conversion in polling mode. + * @note This function should be called only if injected conversion is ongoing. + * @param hdfsdm_filter : DFSDM filter handle. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_DFSDM_FilterInjectedStop(DFSDM_Filter_HandleTypeDef *hdfsdm_filter) +{ + HAL_StatusTypeDef status = HAL_OK; + + /* Check parameters */ + assert_param(IS_DFSDM_FILTER_ALL_INSTANCE(hdfsdm_filter->Instance)); + + /* Check DFSDM filter state */ + if((hdfsdm_filter->State != HAL_DFSDM_FILTER_STATE_INJ) && \ + (hdfsdm_filter->State != HAL_DFSDM_FILTER_STATE_REG_INJ)) + { + /* Return error status */ + status = HAL_ERROR; + } + else + { + /* Stop injected conversion */ + DFSDM_InjConvStop(hdfsdm_filter); + } + /* Return function status */ + return status; +} + +/** + * @brief This function allows to start injected conversion in interrupt mode. + * @note This function should be called only when DFSDM filter instance is + * in idle state or if regular conversion is ongoing. + * @param hdfsdm_filter : DFSDM filter handle. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_DFSDM_FilterInjectedStart_IT(DFSDM_Filter_HandleTypeDef *hdfsdm_filter) +{ + HAL_StatusTypeDef status = HAL_OK; + + /* Check parameters */ + assert_param(IS_DFSDM_FILTER_ALL_INSTANCE(hdfsdm_filter->Instance)); + + /* Check DFSDM filter state */ + if((hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_READY) || \ + (hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_REG)) + { + /* Enable interrupts for injected conversions */ + hdfsdm_filter->Instance->FLTCR2 |= (DFSDM_FLTCR2_JEOCIE | DFSDM_FLTCR2_JOVRIE); + + /* Start injected conversion */ + DFSDM_InjConvStart(hdfsdm_filter); + } + else + { + status = HAL_ERROR; + } + /* Return function status */ + return status; +} + +/** + * @brief This function allows to stop injected conversion in interrupt mode. + * @note This function should be called only if injected conversion is ongoing. + * @param hdfsdm_filter : DFSDM filter handle. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_DFSDM_FilterInjectedStop_IT(DFSDM_Filter_HandleTypeDef *hdfsdm_filter) +{ + HAL_StatusTypeDef status = HAL_OK; + + /* Check parameters */ + assert_param(IS_DFSDM_FILTER_ALL_INSTANCE(hdfsdm_filter->Instance)); + + /* Check DFSDM filter state */ + if((hdfsdm_filter->State != HAL_DFSDM_FILTER_STATE_INJ) && \ + (hdfsdm_filter->State != HAL_DFSDM_FILTER_STATE_REG_INJ)) + { + /* Return error status */ + status = HAL_ERROR; + } + else + { + /* Disable interrupts for injected conversions */ + hdfsdm_filter->Instance->FLTCR2 &= ~(DFSDM_FLTCR2_JEOCIE | DFSDM_FLTCR2_JOVRIE); + + /* Stop injected conversion */ + DFSDM_InjConvStop(hdfsdm_filter); + } + /* Return function status */ + return status; +} + +/** + * @brief This function allows to start injected conversion in DMA mode. + * @note This function should be called only when DFSDM filter instance is + * in idle state or if regular conversion is ongoing. + * Please note that data on buffer will contain signed injected conversion + * value on 24 most significant bits and corresponding channel on 3 least + * significant bits. + * @param hdfsdm_filter : DFSDM filter handle. + * @param pData : The destination buffer address. + * @param Length : The length of data to be transferred from DFSDM filter to memory. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_DFSDM_FilterInjectedStart_DMA(DFSDM_Filter_HandleTypeDef *hdfsdm_filter, + int32_t *pData, + uint32_t Length) +{ + HAL_StatusTypeDef status = HAL_OK; + + /* Check parameters */ + assert_param(IS_DFSDM_FILTER_ALL_INSTANCE(hdfsdm_filter->Instance)); + + /* Check destination address and length */ + if((pData == NULL) || (Length == 0U)) + { + status = HAL_ERROR; + } + /* Check that DMA is enabled for injected conversion */ + else if((hdfsdm_filter->Instance->FLTCR1 & DFSDM_FLTCR1_JDMAEN) != DFSDM_FLTCR1_JDMAEN) + { + status = HAL_ERROR; + } + /* Check parameters compatibility */ + else if((hdfsdm_filter->InjectedTrigger == DFSDM_FILTER_SW_TRIGGER) && \ + (hdfsdm_filter->hdmaInj->Init.Mode == DMA_NORMAL) && \ + (Length > hdfsdm_filter->InjConvRemaining)) + { + status = HAL_ERROR; + } + else if((hdfsdm_filter->InjectedTrigger == DFSDM_FILTER_SW_TRIGGER) && \ + (hdfsdm_filter->hdmaInj->Init.Mode == DMA_CIRCULAR)) + { + status = HAL_ERROR; + } + /* Check DFSDM filter state */ + else if((hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_READY) || \ + (hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_REG)) + { + /* Set callbacks on DMA handler */ + hdfsdm_filter->hdmaInj->XferCpltCallback = DFSDM_DMAInjectedConvCplt; + hdfsdm_filter->hdmaInj->XferErrorCallback = DFSDM_DMAError; + hdfsdm_filter->hdmaInj->XferHalfCpltCallback = (hdfsdm_filter->hdmaInj->Init.Mode == DMA_CIRCULAR) ?\ + DFSDM_DMAInjectedHalfConvCplt : NULL; + + /* Start DMA in interrupt mode */ + if(HAL_DMA_Start_IT(hdfsdm_filter->hdmaInj, (uint32_t)&hdfsdm_filter->Instance->FLTJDATAR, \ + (uint32_t) pData, Length) != HAL_OK) + { + /* Set DFSDM filter in error state */ + hdfsdm_filter->State = HAL_DFSDM_FILTER_STATE_ERROR; + status = HAL_ERROR; + } + else + { + /* Start injected conversion */ + DFSDM_InjConvStart(hdfsdm_filter); + } + } + else + { + status = HAL_ERROR; + } + /* Return function status */ + return status; +} + +/** + * @brief This function allows to start injected conversion in DMA mode and to get + * only the 16 most significant bits of conversion. + * @note This function should be called only when DFSDM filter instance is + * in idle state or if regular conversion is ongoing. + * Please note that data on buffer will contain signed 16 most significant + * bits of injected conversion. + * @param hdfsdm_filter : DFSDM filter handle. + * @param pData : The destination buffer address. + * @param Length : The length of data to be transferred from DFSDM filter to memory. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_DFSDM_FilterInjectedMsbStart_DMA(DFSDM_Filter_HandleTypeDef *hdfsdm_filter, + int16_t *pData, + uint32_t Length) +{ + HAL_StatusTypeDef status = HAL_OK; + + /* Check parameters */ + assert_param(IS_DFSDM_FILTER_ALL_INSTANCE(hdfsdm_filter->Instance)); + + /* Check destination address and length */ + if((pData == NULL) || (Length == 0U)) + { + status = HAL_ERROR; + } + /* Check that DMA is enabled for injected conversion */ + else if((hdfsdm_filter->Instance->FLTCR1 & DFSDM_FLTCR1_JDMAEN) != DFSDM_FLTCR1_JDMAEN) + { + status = HAL_ERROR; + } + /* Check parameters compatibility */ + else if((hdfsdm_filter->InjectedTrigger == DFSDM_FILTER_SW_TRIGGER) && \ + (hdfsdm_filter->hdmaInj->Init.Mode == DMA_NORMAL) && \ + (Length > hdfsdm_filter->InjConvRemaining)) + { + status = HAL_ERROR; + } + else if((hdfsdm_filter->InjectedTrigger == DFSDM_FILTER_SW_TRIGGER) && \ + (hdfsdm_filter->hdmaInj->Init.Mode == DMA_CIRCULAR)) + { + status = HAL_ERROR; + } + /* Check DFSDM filter state */ + else if((hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_READY) || \ + (hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_REG)) + { + /* Set callbacks on DMA handler */ + hdfsdm_filter->hdmaInj->XferCpltCallback = DFSDM_DMAInjectedConvCplt; + hdfsdm_filter->hdmaInj->XferErrorCallback = DFSDM_DMAError; + hdfsdm_filter->hdmaInj->XferHalfCpltCallback = (hdfsdm_filter->hdmaInj->Init.Mode == DMA_CIRCULAR) ?\ + DFSDM_DMAInjectedHalfConvCplt : NULL; + + /* Start DMA in interrupt mode */ + if(HAL_DMA_Start_IT(hdfsdm_filter->hdmaInj, (uint32_t)(&hdfsdm_filter->Instance->FLTJDATAR) + 2U, \ + (uint32_t) pData, Length) != HAL_OK) + { + /* Set DFSDM filter in error state */ + hdfsdm_filter->State = HAL_DFSDM_FILTER_STATE_ERROR; + status = HAL_ERROR; + } + else + { + /* Start injected conversion */ + DFSDM_InjConvStart(hdfsdm_filter); + } + } + else + { + status = HAL_ERROR; + } + /* Return function status */ + return status; +} + +/** + * @brief This function allows to stop injected conversion in DMA mode. + * @note This function should be called only if injected conversion is ongoing. + * @param hdfsdm_filter : DFSDM filter handle. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_DFSDM_FilterInjectedStop_DMA(DFSDM_Filter_HandleTypeDef *hdfsdm_filter) +{ + HAL_StatusTypeDef status = HAL_OK; + + /* Check parameters */ + assert_param(IS_DFSDM_FILTER_ALL_INSTANCE(hdfsdm_filter->Instance)); + + /* Check DFSDM filter state */ + if((hdfsdm_filter->State != HAL_DFSDM_FILTER_STATE_INJ) && \ + (hdfsdm_filter->State != HAL_DFSDM_FILTER_STATE_REG_INJ)) + { + /* Return error status */ + status = HAL_ERROR; + } + else + { + /* Stop current DMA transfer */ + if(HAL_DMA_Abort(hdfsdm_filter->hdmaInj) != HAL_OK) + { + /* Set DFSDM filter in error state */ + hdfsdm_filter->State = HAL_DFSDM_FILTER_STATE_ERROR; + status = HAL_ERROR; + } + else + { + /* Stop regular conversion */ + DFSDM_InjConvStop(hdfsdm_filter); + } + } + /* Return function status */ + return status; +} + +/** + * @brief This function allows to get injected conversion value. + * @param hdfsdm_filter : DFSDM filter handle. + * @param Channel : Corresponding channel of injected conversion. + * @retval Injected conversion value + */ +int32_t HAL_DFSDM_FilterGetInjectedValue(DFSDM_Filter_HandleTypeDef *hdfsdm_filter, + uint32_t *Channel) +{ + uint32_t reg = 0U; + int32_t value = 0U; + + /* Check parameters */ + assert_param(IS_DFSDM_FILTER_ALL_INSTANCE(hdfsdm_filter->Instance)); + assert_param(Channel != NULL); + + /* Get value of data register for injected channel */ + reg = hdfsdm_filter->Instance->FLTJDATAR; + + /* Extract channel and injected conversion value */ + *Channel = (reg & DFSDM_FLTJDATAR_JDATACH); + value = ((reg & DFSDM_FLTJDATAR_JDATA) >> DFSDM_FLTJDATAR_DATA_OFFSET); + + /* return regular conversion value */ + return value; +} + +/** + * @brief This function allows to start filter analog watchdog in interrupt mode. + * @param hdfsdm_filter : DFSDM filter handle. + * @param awdParam : DFSDM filter analog watchdog parameters. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_DFSDM_FilterAwdStart_IT(DFSDM_Filter_HandleTypeDef *hdfsdm_filter, + DFSDM_Filter_AwdParamTypeDef *awdParam) +{ + HAL_StatusTypeDef status = HAL_OK; + + /* Check parameters */ + assert_param(IS_DFSDM_FILTER_ALL_INSTANCE(hdfsdm_filter->Instance)); + assert_param(IS_DFSDM_FILTER_AWD_DATA_SOURCE(awdParam->DataSource)); + assert_param(IS_DFSDM_INJECTED_CHANNEL(awdParam->Channel)); + assert_param(IS_DFSDM_FILTER_AWD_THRESHOLD(awdParam->HighThreshold)); + assert_param(IS_DFSDM_FILTER_AWD_THRESHOLD(awdParam->LowThreshold)); + assert_param(IS_DFSDM_BREAK_SIGNALS(awdParam->HighBreakSignal)); + assert_param(IS_DFSDM_BREAK_SIGNALS(awdParam->LowBreakSignal)); + + /* Check DFSDM filter state */ + if((hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_RESET) || \ + (hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_ERROR)) + { + /* Return error status */ + status = HAL_ERROR; + } + else + { + /* Set analog watchdog data source */ + hdfsdm_filter->Instance->FLTCR1 &= ~(DFSDM_FLTCR1_AWFSEL); + hdfsdm_filter->Instance->FLTCR1 |= awdParam->DataSource; + + /* Set thresholds and break signals */ + hdfsdm_filter->Instance->FLTAWHTR &= ~(DFSDM_FLTAWHTR_AWHT | DFSDM_FLTAWHTR_BKAWH); + hdfsdm_filter->Instance->FLTAWHTR |= (((uint32_t) awdParam->HighThreshold << DFSDM_FLTAWHTR_THRESHOLD_OFFSET) | \ + awdParam->HighBreakSignal); + hdfsdm_filter->Instance->FLTAWLTR &= ~(DFSDM_FLTAWLTR_AWLT | DFSDM_FLTAWLTR_BKAWL); + hdfsdm_filter->Instance->FLTAWLTR |= (((uint32_t) awdParam->LowThreshold << DFSDM_FLTAWLTR_THRESHOLD_OFFSET) | \ + awdParam->LowBreakSignal); + + /* Set channels and interrupt for analog watchdog */ + hdfsdm_filter->Instance->FLTCR2 &= ~(DFSDM_FLTCR2_AWDCH); + hdfsdm_filter->Instance->FLTCR2 |= (((awdParam->Channel & DFSDM_LSB_MASK) << DFSDM_FLTCR2_AWDCH_OFFSET) | \ + DFSDM_FLTCR2_AWDIE); + } + /* Return function status */ + return status; +} + +/** + * @brief This function allows to stop filter analog watchdog in interrupt mode. + * @param hdfsdm_filter : DFSDM filter handle. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_DFSDM_FilterAwdStop_IT(DFSDM_Filter_HandleTypeDef *hdfsdm_filter) +{ + HAL_StatusTypeDef status = HAL_OK; + + /* Check parameters */ + assert_param(IS_DFSDM_FILTER_ALL_INSTANCE(hdfsdm_filter->Instance)); + + /* Check DFSDM filter state */ + if((hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_RESET) || \ + (hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_ERROR)) + { + /* Return error status */ + status = HAL_ERROR; + } + else + { + /* Reset channels for analog watchdog and deactivate interrupt */ + hdfsdm_filter->Instance->FLTCR2 &= ~(DFSDM_FLTCR2_AWDCH | DFSDM_FLTCR2_AWDIE); + + /* Clear all analog watchdog flags */ + hdfsdm_filter->Instance->FLTAWCFR = (DFSDM_FLTAWCFR_CLRAWHTF | DFSDM_FLTAWCFR_CLRAWLTF); + + /* Reset thresholds and break signals */ + hdfsdm_filter->Instance->FLTAWHTR &= ~(DFSDM_FLTAWHTR_AWHT | DFSDM_FLTAWHTR_BKAWH); + hdfsdm_filter->Instance->FLTAWLTR &= ~(DFSDM_FLTAWLTR_AWLT | DFSDM_FLTAWLTR_BKAWL); + + /* Reset analog watchdog data source */ + hdfsdm_filter->Instance->FLTCR1 &= ~(DFSDM_FLTCR1_AWFSEL); + } + /* Return function status */ + return status; +} + +/** + * @brief This function allows to start extreme detector feature. + * @param hdfsdm_filter : DFSDM filter handle. + * @param Channel : Channels where extreme detector is enabled. + * This parameter can be a values combination of @ref DFSDM_Channel_Selection. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_DFSDM_FilterExdStart(DFSDM_Filter_HandleTypeDef *hdfsdm_filter, + uint32_t Channel) +{ + HAL_StatusTypeDef status = HAL_OK; + + /* Check parameters */ + assert_param(IS_DFSDM_FILTER_ALL_INSTANCE(hdfsdm_filter->Instance)); + assert_param(IS_DFSDM_INJECTED_CHANNEL(Channel)); + + /* Check DFSDM filter state */ + if((hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_RESET) || \ + (hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_ERROR)) + { + /* Return error status */ + status = HAL_ERROR; + } + else + { + /* Set channels for extreme detector */ + hdfsdm_filter->Instance->FLTCR2 &= ~(DFSDM_FLTCR2_EXCH); + hdfsdm_filter->Instance->FLTCR2 |= ((Channel & DFSDM_LSB_MASK) << DFSDM_FLTCR2_EXCH_OFFSET); + } + /* Return function status */ + return status; +} + +/** + * @brief This function allows to stop extreme detector feature. + * @param hdfsdm_filter : DFSDM filter handle. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_DFSDM_FilterExdStop(DFSDM_Filter_HandleTypeDef *hdfsdm_filter) +{ + HAL_StatusTypeDef status = HAL_OK; + __IO uint32_t reg1; + __IO uint32_t reg2; + + /* Check parameters */ + assert_param(IS_DFSDM_FILTER_ALL_INSTANCE(hdfsdm_filter->Instance)); + + /* Check DFSDM filter state */ + if((hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_RESET) || \ + (hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_ERROR)) + { + /* Return error status */ + status = HAL_ERROR; + } + else + { + /* Reset channels for extreme detector */ + hdfsdm_filter->Instance->FLTCR2 &= ~(DFSDM_FLTCR2_EXCH); + + /* Clear extreme detector values */ + reg1 = hdfsdm_filter->Instance->FLTEXMAX; + reg2 = hdfsdm_filter->Instance->FLTEXMIN; + UNUSED(reg1); /* To avoid GCC warning */ + UNUSED(reg2); /* To avoid GCC warning */ + } + /* Return function status */ + return status; +} + +/** + * @brief This function allows to get extreme detector maximum value. + * @param hdfsdm_filter : DFSDM filter handle. + * @param Channel : Corresponding channel. + * @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, + uint32_t *Channel) +{ + uint32_t reg = 0U; + int32_t value = 0U; + + /* Check parameters */ + assert_param(IS_DFSDM_FILTER_ALL_INSTANCE(hdfsdm_filter->Instance)); + assert_param(Channel != NULL); + + /* Get value of extreme detector maximum register */ + reg = hdfsdm_filter->Instance->FLTEXMAX; + + /* Extract channel and extreme detector maximum value */ + *Channel = (reg & DFSDM_FLTEXMAX_EXMAXCH); + value = ((reg & DFSDM_FLTEXMAX_EXMAX) >> DFSDM_FLTEXMAX_DATA_OFFSET); + + /* return extreme detector maximum value */ + return value; +} + +/** + * @brief This function allows to get extreme detector minimum value. + * @param hdfsdm_filter : DFSDM filter handle. + * @param Channel : Corresponding channel. + * @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, + uint32_t *Channel) +{ + uint32_t reg = 0U; + int32_t value = 0U; + + /* Check parameters */ + assert_param(IS_DFSDM_FILTER_ALL_INSTANCE(hdfsdm_filter->Instance)); + assert_param(Channel != NULL); + + /* Get value of extreme detector minimum register */ + reg = hdfsdm_filter->Instance->FLTEXMIN; + + /* Extract channel and extreme detector minimum value */ + *Channel = (reg & DFSDM_FLTEXMIN_EXMINCH); + value = ((reg & DFSDM_FLTEXMIN_EXMIN) >> DFSDM_FLTEXMIN_DATA_OFFSET); + + /* return extreme detector minimum value */ + return value; +} + +/** + * @brief This function allows to get conversion time value. + * @param hdfsdm_filter : DFSDM filter handle. + * @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 reg = 0U; + uint32_t value = 0U; + + /* Check parameters */ + assert_param(IS_DFSDM_FILTER_ALL_INSTANCE(hdfsdm_filter->Instance)); + + /* Get value of conversion timer register */ + reg = hdfsdm_filter->Instance->FLTCNVTIMR; + + /* Extract conversion time value */ + value = ((reg & DFSDM_FLTCNVTIMR_CNVCNT) >> DFSDM_FLTCNVTIMR_DATA_OFFSET); + + /* return extreme detector minimum value */ + return value; +} + +/** + * @brief This function handles the DFSDM interrupts. + * @param hdfsdm_filter : DFSDM filter handle. + * @retval None + */ +void HAL_DFSDM_IRQHandler(DFSDM_Filter_HandleTypeDef *hdfsdm_filter) +{ + /* Check if overrun occurs during regular conversion */ + if(((hdfsdm_filter->Instance->FLTISR & DFSDM_FLTISR_ROVRF) != 0U) && \ + ((hdfsdm_filter->Instance->FLTCR2 & DFSDM_FLTCR2_ROVRIE) != 0U)) + { + /* Clear regular overrun flag */ + hdfsdm_filter->Instance->FLTICR = DFSDM_FLTICR_CLRROVRF; + + /* Update error code */ + hdfsdm_filter->ErrorCode = DFSDM_FILTER_ERROR_REGULAR_OVERRUN; + + /* Call error callback */ + HAL_DFSDM_FilterErrorCallback(hdfsdm_filter); + } + /* Check if overrun occurs during injected conversion */ + else if(((hdfsdm_filter->Instance->FLTISR & DFSDM_FLTISR_JOVRF) != 0U) && \ + ((hdfsdm_filter->Instance->FLTCR2 & DFSDM_FLTCR2_JOVRIE) != 0U)) + { + /* Clear injected overrun flag */ + hdfsdm_filter->Instance->FLTICR = DFSDM_FLTICR_CLRJOVRF; + + /* Update error code */ + hdfsdm_filter->ErrorCode = DFSDM_FILTER_ERROR_INJECTED_OVERRUN; + + /* Call error callback */ + HAL_DFSDM_FilterErrorCallback(hdfsdm_filter); + } + /* Check if end of regular conversion */ + else if(((hdfsdm_filter->Instance->FLTISR & DFSDM_FLTISR_REOCF) != 0U) && \ + ((hdfsdm_filter->Instance->FLTCR2 & DFSDM_FLTCR2_REOCIE) != 0U)) + { + /* Call regular conversion complete callback */ + HAL_DFSDM_FilterRegConvCpltCallback(hdfsdm_filter); + + /* End of conversion if mode is not continuous and software trigger */ + if((hdfsdm_filter->RegularContMode == DFSDM_CONTINUOUS_CONV_OFF) && \ + (hdfsdm_filter->RegularTrigger == DFSDM_FILTER_SW_TRIGGER)) + { + /* Disable interrupts for regular conversions */ + hdfsdm_filter->Instance->FLTCR2 &= ~(DFSDM_FLTCR2_REOCIE); + + /* Update DFSDM filter state */ + hdfsdm_filter->State = (hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_REG) ? \ + HAL_DFSDM_FILTER_STATE_READY : HAL_DFSDM_FILTER_STATE_INJ; + } + } + /* Check if end of injected conversion */ + else if(((hdfsdm_filter->Instance->FLTISR & DFSDM_FLTISR_JEOCF) != 0U) && \ + ((hdfsdm_filter->Instance->FLTCR2 & DFSDM_FLTCR2_JEOCIE) != 0U)) + { + /* Call injected conversion complete callback */ + HAL_DFSDM_FilterInjConvCpltCallback(hdfsdm_filter); + + /* Update remaining injected conversions */ + hdfsdm_filter->InjConvRemaining--; + if(hdfsdm_filter->InjConvRemaining == 0U) + { + /* End of conversion if trigger is software */ + if(hdfsdm_filter->InjectedTrigger == DFSDM_FILTER_SW_TRIGGER) + { + /* Disable interrupts for injected conversions */ + hdfsdm_filter->Instance->FLTCR2 &= ~(DFSDM_FLTCR2_JEOCIE); + + /* Update DFSDM filter state */ + hdfsdm_filter->State = (hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_INJ) ? \ + HAL_DFSDM_FILTER_STATE_READY : HAL_DFSDM_FILTER_STATE_REG; + } + /* end of injected sequence, reset the value */ + hdfsdm_filter->InjConvRemaining = (hdfsdm_filter->InjectedScanMode == ENABLE) ? \ + hdfsdm_filter->InjectedChannelsNbr : 1U; + } + } + /* Check if analog watchdog occurs */ + else if(((hdfsdm_filter->Instance->FLTISR & DFSDM_FLTISR_AWDF) != 0U) && \ + ((hdfsdm_filter->Instance->FLTCR2 & DFSDM_FLTCR2_AWDIE) != 0U)) + { + uint32_t reg = 0U; + uint32_t threshold = 0U; + uint32_t channel = 0U; + + /* Get channel and threshold */ + reg = hdfsdm_filter->Instance->FLTAWSR; + threshold = ((reg & DFSDM_FLTAWSR_AWLTF) != 0U) ? DFSDM_AWD_LOW_THRESHOLD : DFSDM_AWD_HIGH_THRESHOLD; + if(threshold == DFSDM_AWD_HIGH_THRESHOLD) + { + reg = reg >> DFSDM_FLTAWSR_HIGH_OFFSET; + } + while((reg & 1U) == 0U) + { + channel++; + reg = reg >> 1U; + } + /* Clear analog watchdog flag */ + hdfsdm_filter->Instance->FLTAWCFR = (threshold == DFSDM_AWD_HIGH_THRESHOLD) ? \ + (1U << (DFSDM_FLTAWSR_HIGH_OFFSET + channel)) : \ + (1U << channel); + + /* Call analog watchdog callback */ + HAL_DFSDM_FilterAwdCallback(hdfsdm_filter, channel, threshold); + } + /* Check if clock absence occurs */ + else if((hdfsdm_filter->Instance == DFSDM1_Filter0) && \ + ((hdfsdm_filter->Instance->FLTISR & DFSDM_FLTISR_CKABF) != 0U) && \ + ((hdfsdm_filter->Instance->FLTCR2 & DFSDM_FLTCR2_CKABIE) != 0U)) + { + uint32_t reg = 0U; + uint32_t channel = 0U; + + reg = ((hdfsdm_filter->Instance->FLTISR & DFSDM_FLTISR_CKABF) >> DFSDM_FLTISR_CKABF_OFFSET); + + while(channel < DFSDM1_CHANNEL_NUMBER) + { + /* Check if flag is set and corresponding channel is enabled */ + if(((reg & 1U) != 0U) && (a_dfsdm1ChannelHandle[channel] != NULL)) + { + /* Check clock absence has been enabled for this channel */ + if((a_dfsdm1ChannelHandle[channel]->Instance->CHCFGR1 & DFSDM_CHCFGR1_CKABEN) != 0U) + { + /* Clear clock absence flag */ + hdfsdm_filter->Instance->FLTICR = (1U << (DFSDM_FLTICR_CLRCKABF_OFFSET + channel)); + + /* Call clock absence callback */ + HAL_DFSDM_ChannelCkabCallback(a_dfsdm1ChannelHandle[channel]); + } + } + channel++; + reg = reg >> 1U; + } + } + /* Check if short circuit detection occurs */ + else if((hdfsdm_filter->Instance == DFSDM1_Filter0) && \ + ((hdfsdm_filter->Instance->FLTISR & DFSDM_FLTISR_SCDF) != 0U) && \ + ((hdfsdm_filter->Instance->FLTCR2 & DFSDM_FLTCR2_SCDIE) != 0U)) + { + uint32_t reg = 0U; + uint32_t channel = 0U; + + /* Get channel */ + reg = ((hdfsdm_filter->Instance->FLTISR & DFSDM_FLTISR_SCDF) >> DFSDM_FLTISR_SCDF_OFFSET); + while((reg & 1U) == 0U) + { + channel++; + reg = reg >> 1U; + } + + /* Clear short circuit detection flag */ + hdfsdm_filter->Instance->FLTICR = (1U << (DFSDM_FLTICR_CLRSCDF_OFFSET + channel)); + + /* Call short circuit detection callback */ + HAL_DFSDM_ChannelScdCallback(a_dfsdm1ChannelHandle[channel]); + } +} + +/** + * @brief Regular conversion complete callback. + * @note In interrupt mode, user has to read conversion value in this function + * using HAL_DFSDM_FilterGetRegularValue. + * @param hdfsdm_filter : DFSDM filter handle. + * @retval None + */ +__weak void HAL_DFSDM_FilterRegConvCpltCallback(DFSDM_Filter_HandleTypeDef *hdfsdm_filter) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hdfsdm_filter); + /* NOTE : This function should not be modified, when the callback is needed, + the HAL_DFSDM_FilterRegConvCpltCallback could be implemented in the user file. + */ +} + +/** + * @brief Half regular conversion complete callback. + * @param hdfsdm_filter : DFSDM filter handle. + * @retval None + */ +__weak void HAL_DFSDM_FilterRegConvHalfCpltCallback(DFSDM_Filter_HandleTypeDef *hdfsdm_filter) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hdfsdm_filter); + /* NOTE : This function should not be modified, when the callback is needed, + the HAL_DFSDM_FilterRegConvHalfCpltCallback could be implemented in the user file. + */ +} + +/** + * @brief Injected conversion complete callback. + * @note In interrupt mode, user has to read conversion value in this function + * using HAL_DFSDM_FilterGetInjectedValue. + * @param hdfsdm_filter : DFSDM filter handle. + * @retval None + */ +__weak void HAL_DFSDM_FilterInjConvCpltCallback(DFSDM_Filter_HandleTypeDef *hdfsdm_filter) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hdfsdm_filter); + /* NOTE : This function should not be modified, when the callback is needed, + the HAL_DFSDM_FilterInjConvCpltCallback could be implemented in the user file. + */ +} + +/** + * @brief Half injected conversion complete callback. + * @param hdfsdm_filter : DFSDM filter handle. + * @retval None + */ +__weak void HAL_DFSDM_FilterInjConvHalfCpltCallback(DFSDM_Filter_HandleTypeDef *hdfsdm_filter) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hdfsdm_filter); + /* NOTE : This function should not be modified, when the callback is needed, + the HAL_DFSDM_FilterInjConvHalfCpltCallback could be implemented in the user file. + */ +} + +/** + * @brief Filter analog watchdog callback. + * @param hdfsdm_filter : DFSDM filter handle. + * @param Channel : Corresponding channel. + * @param Threshold : Low or high threshold has been reached. + * @retval None + */ +__weak void HAL_DFSDM_FilterAwdCallback(DFSDM_Filter_HandleTypeDef *hdfsdm_filter, + uint32_t Channel, uint32_t Threshold) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hdfsdm_filter); + UNUSED(Channel); + UNUSED(Threshold); + + /* NOTE : This function should not be modified, when the callback is needed, + the HAL_DFSDM_FilterAwdCallback could be implemented in the user file. + */ +} + +/** + * @brief Error callback. + * @param hdfsdm_filter : DFSDM filter handle. + * @retval None + */ +__weak void HAL_DFSDM_FilterErrorCallback(DFSDM_Filter_HandleTypeDef *hdfsdm_filter) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hdfsdm_filter); + /* NOTE : This function should not be modified, when the callback is needed, + the HAL_DFSDM_FilterErrorCallback could be implemented in the user file. + */ +} + +/** + * @} + */ + +/** @defgroup DFSDM_Exported_Functions_Group4_Filter Filter state functions + * @brief Filter state functions + * +@verbatim + ============================================================================== + ##### Filter state functions ##### + ============================================================================== + [..] This section provides functions allowing to: + (+) Get the DFSDM filter state. + (+) Get the DFSDM filter error. +@endverbatim + * @{ + */ + +/** + * @brief This function allows to get the current DFSDM filter handle state. + * @param hdfsdm_filter : DFSDM filter handle. + * @retval DFSDM filter state. + */ +HAL_DFSDM_Filter_StateTypeDef HAL_DFSDM_FilterGetState(DFSDM_Filter_HandleTypeDef *hdfsdm_filter) +{ + /* Return DFSDM filter handle state */ + return hdfsdm_filter->State; +} + +/** + * @brief This function allows to get the current DFSDM filter error. + * @param hdfsdm_filter : DFSDM filter handle. + * @retval DFSDM filter error code. + */ +uint32_t HAL_DFSDM_FilterGetError(DFSDM_Filter_HandleTypeDef *hdfsdm_filter) +{ + return hdfsdm_filter->ErrorCode; +} + +/** + * @} + */ + +/** + * @} + */ +/* End of exported functions -------------------------------------------------*/ + +/* Private functions ---------------------------------------------------------*/ +/** @addtogroup DFSDM_Private_Functions DFSDM Private Functions + * @{ + */ + +/** + * @brief DMA half transfer complete callback for regular conversion. + * @param hdma : DMA handle. + * @retval None + */ +static void DFSDM_DMARegularHalfConvCplt(DMA_HandleTypeDef *hdma) +{ + /* Get DFSDM filter handle */ + DFSDM_Filter_HandleTypeDef* hdfsdm_filter = (DFSDM_Filter_HandleTypeDef*) ((DMA_HandleTypeDef*)hdma)->Parent; + + /* Call regular half conversion complete callback */ + HAL_DFSDM_FilterRegConvHalfCpltCallback(hdfsdm_filter); +} + +/** + * @brief DMA transfer complete callback for regular conversion. + * @param hdma : DMA handle. + * @retval None + */ +static void DFSDM_DMARegularConvCplt(DMA_HandleTypeDef *hdma) +{ + /* Get DFSDM filter handle */ + DFSDM_Filter_HandleTypeDef* hdfsdm_filter = (DFSDM_Filter_HandleTypeDef*) ((DMA_HandleTypeDef*)hdma)->Parent; + + /* Call regular conversion complete callback */ + HAL_DFSDM_FilterRegConvCpltCallback(hdfsdm_filter); +} + +/** + * @brief DMA half transfer complete callback for injected conversion. + * @param hdma : DMA handle. + * @retval None + */ +static void DFSDM_DMAInjectedHalfConvCplt(DMA_HandleTypeDef *hdma) +{ + /* Get DFSDM filter handle */ + DFSDM_Filter_HandleTypeDef* hdfsdm_filter = (DFSDM_Filter_HandleTypeDef*) ((DMA_HandleTypeDef*)hdma)->Parent; + + /* Call injected half conversion complete callback */ + HAL_DFSDM_FilterInjConvHalfCpltCallback(hdfsdm_filter); +} + +/** + * @brief DMA transfer complete callback for injected conversion. + * @param hdma : DMA handle. + * @retval None + */ +static void DFSDM_DMAInjectedConvCplt(DMA_HandleTypeDef *hdma) +{ + /* Get DFSDM filter handle */ + DFSDM_Filter_HandleTypeDef* hdfsdm_filter = (DFSDM_Filter_HandleTypeDef*) ((DMA_HandleTypeDef*)hdma)->Parent; + + /* Call injected conversion complete callback */ + HAL_DFSDM_FilterInjConvCpltCallback(hdfsdm_filter); +} + +/** + * @brief DMA error callback. + * @param hdma : DMA handle. + * @retval None + */ +static void DFSDM_DMAError(DMA_HandleTypeDef *hdma) +{ + /* Get DFSDM filter handle */ + DFSDM_Filter_HandleTypeDef* hdfsdm_filter = (DFSDM_Filter_HandleTypeDef*) ((DMA_HandleTypeDef*)hdma)->Parent; + + /* Update error code */ + hdfsdm_filter->ErrorCode = DFSDM_FILTER_ERROR_DMA; + + /* Call error callback */ + HAL_DFSDM_FilterErrorCallback(hdfsdm_filter); +} + +/** + * @brief This function allows to get the number of injected channels. + * @param Channels : bitfield of injected channels. + * @retval Number of injected channels. + */ +static uint32_t DFSDM_GetInjChannelsNbr(uint32_t Channels) +{ + uint32_t nbChannels = 0U; + uint32_t tmp; + + /* Get the number of channels from bitfield */ + tmp = (uint32_t) (Channels & DFSDM_LSB_MASK); + while(tmp != 0U) + { + if((tmp & 1U) != 0U) + { + nbChannels++; + } + tmp = (uint32_t) (tmp >> 1U); + } + return nbChannels; +} + +/** + * @brief This function allows to get the channel number from channel instance. + * @param Instance : DFSDM channel instance. + * @retval Channel number. + */ +static uint32_t DFSDM_GetChannelFromInstance(DFSDM_Channel_TypeDef* Instance) +{ + uint32_t channel = 0xFFU; + + /* Get channel from instance */ + if(Instance == DFSDM1_Channel0) + { + channel = 0U; + } + else if(Instance == DFSDM1_Channel1) + { + channel = 1U; + } + else if(Instance == DFSDM1_Channel2) + { + channel = 2U; + } + else if(Instance == DFSDM1_Channel3) + { + channel = 3U; + } + + return channel; +} + +/** + * @brief This function allows to really start regular conversion. + * @param hdfsdm_filter : DFSDM filter handle. + * @retval None + */ +static void DFSDM_RegConvStart(DFSDM_Filter_HandleTypeDef* hdfsdm_filter) +{ + /* Check regular trigger */ + if(hdfsdm_filter->RegularTrigger == DFSDM_FILTER_SW_TRIGGER) + { + /* Software start of regular conversion */ + hdfsdm_filter->Instance->FLTCR1 |= DFSDM_FLTCR1_RSWSTART; + } + else /* synchronous trigger */ + { + /* Disable DFSDM filter */ + hdfsdm_filter->Instance->FLTCR1 &= ~(DFSDM_FLTCR1_DFEN); + + /* Set RSYNC bit in DFSDM_FLTCR1 register */ + hdfsdm_filter->Instance->FLTCR1 |= DFSDM_FLTCR1_RSYNC; + + /* Enable DFSDM filter */ + hdfsdm_filter->Instance->FLTCR1 |= DFSDM_FLTCR1_DFEN; + + /* If injected conversion was in progress, restart it */ + if(hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_INJ) + { + if(hdfsdm_filter->InjectedTrigger == DFSDM_FILTER_SW_TRIGGER) + { + hdfsdm_filter->Instance->FLTCR1 |= DFSDM_FLTCR1_JSWSTART; + } + /* Update remaining injected conversions */ + hdfsdm_filter->InjConvRemaining = (hdfsdm_filter->InjectedScanMode == ENABLE) ? \ + hdfsdm_filter->InjectedChannelsNbr : 1U; + } + } + /* Update DFSDM filter state */ + hdfsdm_filter->State = (hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_READY) ? \ + HAL_DFSDM_FILTER_STATE_REG : HAL_DFSDM_FILTER_STATE_REG_INJ; +} + +/** + * @brief This function allows to really stop regular conversion. + * @param hdfsdm_filter : DFSDM filter handle. + * @retval None + */ +static void DFSDM_RegConvStop(DFSDM_Filter_HandleTypeDef* hdfsdm_filter) +{ + /* Disable DFSDM filter */ + hdfsdm_filter->Instance->FLTCR1 &= ~(DFSDM_FLTCR1_DFEN); + + /* If regular trigger was synchronous, reset RSYNC bit in DFSDM_FLTCR1 register */ + if(hdfsdm_filter->RegularTrigger == DFSDM_FILTER_SYNC_TRIGGER) + { + hdfsdm_filter->Instance->FLTCR1 &= ~(DFSDM_FLTCR1_RSYNC); + } + + /* Enable DFSDM filter */ + hdfsdm_filter->Instance->FLTCR1 |= DFSDM_FLTCR1_DFEN; + + /* If injected conversion was in progress, restart it */ + if(hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_REG_INJ) + { + if(hdfsdm_filter->InjectedTrigger == DFSDM_FILTER_SW_TRIGGER) + { + hdfsdm_filter->Instance->FLTCR1 |= DFSDM_FLTCR1_JSWSTART; + } + /* Update remaining injected conversions */ + hdfsdm_filter->InjConvRemaining = (hdfsdm_filter->InjectedScanMode == ENABLE) ? \ + hdfsdm_filter->InjectedChannelsNbr : 1U; + } + + /* Update DFSDM filter state */ + hdfsdm_filter->State = (hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_REG) ? \ + HAL_DFSDM_FILTER_STATE_READY : HAL_DFSDM_FILTER_STATE_INJ; +} + +/** + * @brief This function allows to really start injected conversion. + * @param hdfsdm_filter : DFSDM filter handle. + * @retval None + */ +static void DFSDM_InjConvStart(DFSDM_Filter_HandleTypeDef* hdfsdm_filter) +{ + /* Check injected trigger */ + if(hdfsdm_filter->InjectedTrigger == DFSDM_FILTER_SW_TRIGGER) + { + /* Software start of injected conversion */ + hdfsdm_filter->Instance->FLTCR1 |= DFSDM_FLTCR1_JSWSTART; + } + else /* external or synchronous trigger */ + { + /* Disable DFSDM filter */ + hdfsdm_filter->Instance->FLTCR1 &= ~(DFSDM_FLTCR1_DFEN); + + if(hdfsdm_filter->InjectedTrigger == DFSDM_FILTER_SYNC_TRIGGER) + { + /* Set JSYNC bit in DFSDM_FLTCR1 register */ + hdfsdm_filter->Instance->FLTCR1 |= DFSDM_FLTCR1_JSYNC; + } + else /* external trigger */ + { + /* Set JEXTEN[1:0] bits in DFSDM_FLTCR1 register */ + hdfsdm_filter->Instance->FLTCR1 |= hdfsdm_filter->ExtTriggerEdge; + } + + /* Enable DFSDM filter */ + hdfsdm_filter->Instance->FLTCR1 |= DFSDM_FLTCR1_DFEN; + + /* If regular conversion was in progress, restart it */ + if((hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_REG) && \ + (hdfsdm_filter->RegularTrigger == DFSDM_FILTER_SW_TRIGGER)) + { + hdfsdm_filter->Instance->FLTCR1 |= DFSDM_FLTCR1_RSWSTART; + } + } + /* Update DFSDM filter state */ + hdfsdm_filter->State = (hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_READY) ? \ + HAL_DFSDM_FILTER_STATE_INJ : HAL_DFSDM_FILTER_STATE_REG_INJ; +} + +/** + * @brief This function allows to really stop injected conversion. + * @param hdfsdm_filter : DFSDM filter handle. + * @retval None + */ +static void DFSDM_InjConvStop(DFSDM_Filter_HandleTypeDef* hdfsdm_filter) +{ + /* Disable DFSDM filter */ + hdfsdm_filter->Instance->FLTCR1 &= ~(DFSDM_FLTCR1_DFEN); + + /* If injected trigger was synchronous, reset JSYNC bit in DFSDM_FLTCR1 register */ + if(hdfsdm_filter->InjectedTrigger == DFSDM_FILTER_SYNC_TRIGGER) + { + hdfsdm_filter->Instance->FLTCR1 &= ~(DFSDM_FLTCR1_JSYNC); + } + else if(hdfsdm_filter->InjectedTrigger == DFSDM_FILTER_EXT_TRIGGER) + { + /* Reset JEXTEN[1:0] bits in DFSDM_FLTCR1 register */ + hdfsdm_filter->Instance->FLTCR1 &= ~(DFSDM_FLTCR1_JEXTEN); + } + + /* Enable DFSDM filter */ + hdfsdm_filter->Instance->FLTCR1 |= DFSDM_FLTCR1_DFEN; + + /* If regular conversion was in progress, restart it */ + if((hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_REG_INJ) && \ + (hdfsdm_filter->RegularTrigger == DFSDM_FILTER_SW_TRIGGER)) + { + hdfsdm_filter->Instance->FLTCR1 |= DFSDM_FLTCR1_RSWSTART; + } + + /* Update remaining injected conversions */ + hdfsdm_filter->InjConvRemaining = (hdfsdm_filter->InjectedScanMode == ENABLE) ? \ + hdfsdm_filter->InjectedChannelsNbr : 1U; + + /* Update DFSDM filter state */ + hdfsdm_filter->State = (hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_INJ) ? \ + HAL_DFSDM_FILTER_STATE_READY : HAL_DFSDM_FILTER_STATE_REG; +} + +/** + * @} + */ +/* End of private functions --------------------------------------------------*/ + +/** + * @} + */ +#endif /* STM32F412Zx || STM32F412Vx || STM32F412Rx || STM32F412Cx */ +#endif /* HAL_DFSDM_MODULE_ENABLED */ +/** + * @} + */ + +/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/