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Diffstat (limited to 'tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32L0/stm32l0xx_hal_adc.c')
| -rw-r--r-- | tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32L0/stm32l0xx_hal_adc.c | 1778 |
1 files changed, 1778 insertions, 0 deletions
diff --git a/tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32L0/stm32l0xx_hal_adc.c b/tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32L0/stm32l0xx_hal_adc.c new file mode 100644 index 0000000000..c552d57221 --- /dev/null +++ b/tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32L0/stm32l0xx_hal_adc.c @@ -0,0 +1,1778 @@ +/** + ****************************************************************************** + * @file stm32l0xx_hal_adc.c + * @author MCD Application Team + * @version V1.2.0 + * @date 06-February-2015 + * @brief This file provides firmware functions to manage the following + * functionalities of the Analog to Digital Convertor (ADC) + * peripheral: + * + Initialization and de-initialization functions + * ++ Initialization and Configuration of ADC + * + Operation functions + * ++ Start, stop, get result of conversions of regular + * groups, using 3 possible modes : polling, interruption or DMA. + * ++ Calibration feature + * + Control functions + * ++ Analog Watchdog configuration + * ++ Regular Channels Configuration + * + State functions + * ++ ADC state machine management + * ++ Interrupts and flags management + * + @verbatim + ============================================================================== + ##### ADC specific features ##### + ============================================================================== + [..] + (#) 12-bit, 10-bit, 8-bit or 6-bit configurable resolution. + + (#) A built-in hardware oversampler allows to improve analog performances + while off-loading the related computational burden from the CPU. + + (#) Interrupt generation at the end of conversion and in case of analog + watchdog or overrun events. + + (#) Single and continuous conversion modes. + + (#) Scan or discontinuous mode conversion of channel 0 to channel 18. + + (#) Configurable scan direction (Upward from channel 0 to 18 or Backward from + channel 18 to channel 0) + + (#) Data alignment with in-built data coherency. + + (#) Channel-wise programmable sampling time. + + (#) External trigger option with configurable polarity. + + (#) DMA request generation during regular channel conversion. + + (#) ADC supply requirements: 2.4 V to 3.6 V at full speed and down to 1.8 V at + slower speed. + + (#) ADC input range: VREF- =VIN =VREF+. + + (#) ADC self-calibration. + + (#) ADC is automatically powered off (AutoOff mode) except during the active + conversion phase. This dramatically reduces the power consumption of the + ADC. + + (#) Wait mode to prevent ADC overrun in applications with low frequency. + + + ##### How to use this driver ##### + ============================================================================== + [..] + + (#) Enable the ADC interface + As prerequisite, into HAL_ADC_MspInit(), ADC clock must be configured + at RCC top level. + + Depending on both possible clock sources: PCLK clock or ADC asynchronous + clock. + __HAL_RCC_ADC1_CLK_ENABLE(); + + + (#) ADC pins configuration + (++) Enable the clock for the ADC GPIOs using the following function: + __HAL_RCC_GPIOx_CLK_ENABLE(); + (++) Configure these ADC pins in analog mode using HAL_GPIO_Init(); + + (#) Configure the ADC parameters (conversion resolution, oversampler, + data alignment, continuous mode,...) using the HAL_ADC_Init() function. + + (#) Activate the ADC peripheral using one of the start functions: + HAL_ADC_Start(), HAL_ADC_Start_IT() or HAL_ADC_Start_DMA() + + *** Channels configuration *** + =============================== + [..] + (+) To configure the ADC channels group, use HAL_ADC_ConfigChannel() function. + (+) To read the ADC converted values, use the HAL_ADC_GetValue() function. + + *** DMA feature configuration *** + ================================= + [..] + (+) To enable the DMA mode, use the HAL_ADC_Start_DMA() function. + (+) To enable the generation of DMA requests continuously at the end of + the last DMA transfer, set .Init.DMAContinuousRequests to ENABLE and + call HAL_ADC_Init() function. + + + @endverbatim + ****************************************************************************** + * @attention + * + * <h2><center>© COPYRIGHT(c) 2015 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 "stm32l0xx_hal.h" + +/** @addtogroup STM32L0xx_HAL_Driver + * @{ + */ + +/** @addtogroup ADC + * @brief ADC driver modules + * @{ + */ + +#ifdef HAL_ADC_MODULE_ENABLED + +/* Private typedef -----------------------------------------------------------*/ +/* Private define ------------------------------------------------------------*/ + +/* Delay for ADC stabilization time. */ +/* Maximum delay is 1us (refer to device datasheet, parameter tSTART). */ +/* Unit: us */ +#define ADC_STAB_DELAY_US ((uint32_t) 1) + +/* Delay for temperature sensor stabilization time. */ +/* Maximum delay is 10us (refer to device datasheet, parameter tSTART). */ +/* Unit: us */ +#define ADC_TEMPSENSOR_DELAY_US ((uint32_t) 10) + +/* Private macro -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +/* Private function prototypes -----------------------------------------------*/ +static HAL_StatusTypeDef ADC_Enable(ADC_HandleTypeDef* hadc); +static void ADC_DMAConvCplt(DMA_HandleTypeDef *hdma); +static void ADC_DMAHalfConvCplt(DMA_HandleTypeDef *hdma); +static void ADC_DMAError(DMA_HandleTypeDef *hdma); +static HAL_StatusTypeDef ADC_ConversionStop(ADC_HandleTypeDef* hadc, uint32_t ConversionGroup); +static HAL_StatusTypeDef ADC_Disable(ADC_HandleTypeDef* hadc); +static void ADC_DelayMicroSecond(uint32_t microSecond); + +/* Private functions ---------------------------------------------------------*/ + +/** @defgroup ADC_Private_Functions + * @{ + */ + +/** @defgroup ADC_Group1 Initialization/de-initialization functions + * @brief Initialization and Configuration functions + * +@verbatim + =============================================================================== + ##### Initialization and de-initialization functions ##### + =============================================================================== + [..] This section provides functions allowing to: + (+) Initialize and configure the ADC. + (+) De-initialize the ADC. + +@endverbatim + * @{ + */ + + +/** + * @brief Initializes the ADCx peripheral according to the specified parameters + * in the ADC_InitStruct. + * @note This function is used to configure the global features of the ADC + * (ClockPrescaler, Resolution, Data Alignment and number of conversion), however, + * the rest of the configuration parameters are specific to the regular + * channels group (scan mode activation, continuous mode activation, + * External trigger source and edge, DMA continuous request after the + * last transfer and End of conversion selection). + * + * As prerequisite, into HAL_ADC_MspInit(), ADC clock must be + * configured at RCC top level. + * See commented example code below that can be copied + * and uncommented into HAL_ADC_MspInit(). + * + * @param hadc: pointer to a ADC_HandleTypeDef structure that contains + * the configuration information for the specified ADC. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_ADC_Init(ADC_HandleTypeDef* hadc) +{ + uint32_t tickstart = 0x00; + + /* Check ADC handle */ + if(hadc == NULL) + { + return HAL_ERROR; + } + + /* Check the parameters */ + assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance)); + assert_param(IS_ADC_CLOCKPRESCALER(hadc->Init.ClockPrescaler)); + assert_param(IS_ADC_RESOLUTION(hadc->Init.Resolution)); + assert_param(IS_ADC_SAMPLE_TIME(hadc->Init.SamplingTime)); + assert_param(IS_ADC_SCAN_MODE(hadc->Init.ScanConvMode)); + assert_param(IS_ADC_DATA_ALIGN(hadc->Init.DataAlign)); + assert_param(IS_FUNCTIONAL_STATE(hadc->Init.ContinuousConvMode)); + assert_param(IS_FUNCTIONAL_STATE(hadc->Init.DiscontinuousConvMode)); + assert_param(IS_ADC_EXTTRIG_EDGE(hadc->Init.ExternalTrigConvEdge)); + assert_param(IS_ADC_EXTERNAL_TRIG_CONV(hadc->Init.ExternalTrigConv)); + assert_param(IS_FUNCTIONAL_STATE(hadc->Init.DMAContinuousRequests)); + assert_param(IS_ADC_EOC_SELECTION(hadc->Init.EOCSelection)); + assert_param(IS_ADC_OVERRUN(hadc->Init.Overrun)); + assert_param(IS_FUNCTIONAL_STATE(hadc->Init.LowPowerAutoWait)); + assert_param(IS_FUNCTIONAL_STATE(hadc->Init.LowPowerFrequencyMode)); + assert_param(IS_FUNCTIONAL_STATE(hadc->Init.LowPowerAutoPowerOff)); + assert_param(IS_FUNCTIONAL_STATE(hadc->Init.OversamplingMode)); + + if(hadc->State == HAL_ADC_STATE_RESET) + { + /* Init the low level hardware */ + HAL_ADC_MspInit(hadc); + } + + /* Configuration of ADC parameters if previous preliminary actions are */ + /* correctly completed. */ + /* and if there is no conversion on going (ADC can be enabled anyway, */ + /* in case of call of this function to update a parameter */ + /* on the fly). */ + if ((hadc->State == HAL_ADC_STATE_ERROR) || + (ADC_IS_CONVERSION_ONGOING(hadc) != RESET) ) + { + /* Update ADC state machine to error */ + hadc->State = HAL_ADC_STATE_ERROR; + /* Process unlocked */ + __HAL_UNLOCK(hadc); + return HAL_ERROR; + } + + /* Initialize the ADC state */ + hadc->State = HAL_ADC_STATE_BUSY; + + /* Configuration of ADC clock: clock source PCLK or asynchronous with + selectable prescaler */ + __HAL_ADC_CLOCK_PRESCALER(hadc); + + /* Set the Low Frequency mode */ + ADC->CCR &= (uint32_t)~ADC_CCR_LFMEN; + ADC->CCR |=__HAL_ADC_CCR_LOWFREQUENCY(hadc->Init.LowPowerFrequencyMode); + + /* Enable voltage regulator (if disabled at this step) */ + if (HAL_IS_BIT_CLR(hadc->Instance->CR, ADC_CR_ADVREGEN)) + { + /* Disable the ADC (if not already disabled) */ + if (ADC_IS_ENABLE(hadc) != RESET ) + { + /* Check if conditions to disable the ADC are fulfilled */ + if (ADC_DISABLING_CONDITIONS(hadc) != RESET) + { + __HAL_ADC_DISABLE(hadc); + } + else + { + hadc->State= HAL_ADC_STATE_ERROR; + + /* Process unlocked */ + __HAL_UNLOCK(hadc); + + return HAL_ERROR; + } + + /* Get timeout */ + tickstart = HAL_GetTick(); + + /* Wait for disabling completion */ + while(HAL_IS_BIT_SET(hadc->Instance->CR, ADC_CR_ADEN)) + { + /* Check for the Timeout */ + if(ADC_ENABLE_TIMEOUT != HAL_MAX_DELAY) + { + if((HAL_GetTick() - tickstart ) > ADC_DISABLE_TIMEOUT) + { + hadc->State= HAL_ADC_STATE_TIMEOUT; + + /* Process unlocked */ + __HAL_UNLOCK(hadc); + + return HAL_TIMEOUT; + } + } + } + + } + + /* Set ADVREGEN bit */ + hadc->Instance->CR |= ADC_CR_ADVREGEN; + } + + /* Configuration of ADC: */ + /* - Resolution */ + /* - Data alignment */ + /* - Scan direction */ + /* - External trigger to start conversion */ + /* - External trigger polarity */ + /* - Continuous conversion mode */ + /* - DMA continuous request */ + /* - Overrun */ + /* - AutoDelay feature */ + /* - Discontinuous mode */ + hadc->Instance->CFGR1 &= ~( ADC_CFGR1_RES | + ADC_CFGR1_ALIGN | + ADC_CFGR1_SCANDIR | + ADC_CFGR1_EXTSEL | + ADC_CFGR1_EXTEN | + ADC_CFGR1_CONT | + ADC_CFGR1_DMACFG | + ADC_CFGR1_OVRMOD | + ADC_CFGR1_AUTDLY | + ADC_CFGR1_AUTOFF | + ADC_CFGR1_DISCEN); + + hadc->Instance->CFGR1 |= ( hadc->Init.Resolution | + hadc->Init.DataAlign | + ADC_SCANDIR(hadc->Init.ScanConvMode) | + hadc->Init.ExternalTrigConvEdge | + ADC_CONTINUOUS(hadc->Init.ContinuousConvMode) | + ADC_DMACONTREQ(hadc->Init.DMAContinuousRequests) | + hadc->Init.Overrun | + __HAL_ADC_CFGR1_AutoDelay(hadc->Init.LowPowerAutoWait) | + __HAL_ADC_CFGR1_AUTOFF(hadc->Init.LowPowerAutoPowerOff)); + + /* Configure the external trigger only if Conversion edge is not "NONE" */ + if (hadc->Init.ExternalTrigConvEdge != ADC_EXTERNALTRIGCONVEDGE_NONE) + { + hadc->Instance->CFGR1 |= hadc->Init.ExternalTrigConv; + } + + /* Enable discontinuous mode only if continuous mode is disabled */ + if ((hadc->Init.DiscontinuousConvMode == ENABLE) && (hadc->Init.ContinuousConvMode == DISABLE)) + { + /* Enable the selected ADC discontinuous mode */ + hadc->Instance->CFGR1 |= ( ADC_CFGR1_DISCEN); + } + + if (hadc->Init.OversamplingMode == ENABLE) + { + assert_param(IS_ADC_OVERSAMPLING_RATIO(hadc->Init.Oversample.Ratio)); + assert_param(IS_ADC_RIGHT_BIT_SHIFT(hadc->Init.Oversample.RightBitShift)); + assert_param(IS_ADC_TRIGGERED_OVERSAMPLING_MODE(hadc->Init.Oversample.TriggeredMode)); + + /* Configuration of Oversampler: */ + /* - Oversampling Ratio */ + /* - Right bit shift */ + /* - Triggered mode */ + + hadc->Instance->CFGR2 &= ~( ADC_CFGR2_OVSR | + ADC_CFGR2_OVSS | + ADC_CFGR2_TOVS ); + + hadc->Instance->CFGR2 |= ( hadc->Init.Oversample.Ratio | + hadc->Init.Oversample.RightBitShift | + hadc->Init.Oversample.TriggeredMode ); + + /* Enable OverSampling mode */ + hadc->Instance->CFGR2 |= ADC_CFGR2_OVSE; + } + else + { + /* Disable OverSampling mode */ + hadc->Instance->CFGR2 &= ~ADC_CFGR2_OVSE; + } + + /* Clear the old sampling time */ + hadc->Instance->SMPR &= (uint32_t)(~ADC_SMPR_SMPR); + + /* Set the new sample time */ + hadc->Instance->SMPR |= hadc->Init.SamplingTime; + + + /* Set ADC error code to none */ + hadc->ErrorCode = HAL_ADC_ERROR_NONE; + + /* Initialize the ADC state */ + hadc->State = HAL_ADC_STATE_READY; + + /* Return function status */ + return HAL_OK; +} + +/** + * @brief Deinitialize the ADC peripheral registers to its default reset values. + * @note To not impact other ADCs, reset of common ADC registers have been + * left commented below. + * If needed, the example code can be copied and uncommented into + * function HAL_ADC_MspDeInit(). + * @param hadc: pointer to a ADC_HandleTypeDef structure that contains + * the configuration information for the specified ADC. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_ADC_DeInit(ADC_HandleTypeDef* hadc) +{ + uint32_t tickstart = 0; + + /* Check ADC handle */ + if(hadc == NULL) + { + return HAL_ERROR; + } + + /* Check the parameters */ + assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance)); + + /* Change ADC state */ + hadc->State = HAL_ADC_STATE_BUSY; + + /* Stop potential conversion ongoing */ + if (HAL_IS_BIT_SET(hadc->Instance->CR, ADC_CR_ADSTART) && HAL_IS_BIT_CLR(hadc->Instance->CR, ADC_CR_ADDIS)) + { + /* Stop regular conversion */ + hadc->Instance->CR |= ADC_CR_ADSTP; + } + + /* Disable ADC: Solution to recover from an unknown ADC state (for example, */ + /* in case of forbidden action on register bits) */ + /* Procedure to disable the ADC peripheral: wait for conversions */ + /* effectively stopped, then disable ADC */ + /* 1. Wait until ADSTART = 0 */ + + /* Get timeout */ + tickstart = HAL_GetTick(); + + while(HAL_IS_BIT_SET(hadc->Instance->CR, ADC_CR_ADSTART)) + { + /* Check for the Timeout */ + if(ADC_STOP_CONVERSION_TIMEOUT != HAL_MAX_DELAY) + { + if((HAL_GetTick() - tickstart ) > ADC_STOP_CONVERSION_TIMEOUT) + { + hadc->State= HAL_ADC_STATE_TIMEOUT; + + /* Process unlocked */ + __HAL_UNLOCK(hadc); + + return HAL_TIMEOUT; + } + } + } + + /* 2. Disable the ADC peripheral */ + __HAL_ADC_DISABLE(hadc); + + + /* Reset ADC registers****************/ + /* Reset register IER */ + __HAL_ADC_DISABLE_IT(hadc, (ADC_IT_AWD | ADC_IT_OVR | ADC_IT_EOCAL | ADC_IT_EOS | \ + ADC_IT_EOC | ADC_IT_RDY | ADC_IT_EOSMP )); + + /* Reset register ISR */ + __HAL_ADC_CLEAR_FLAG(hadc, (ADC_FLAG_AWD | ADC_FLAG_EOCAL | ADC_FLAG_OVR | ADC_FLAG_EOS | \ + ADC_FLAG_EOC | ADC_FLAG_EOSMP | ADC_FLAG_RDY)); + + /* Reset register CR */ + /* Disable voltage regulator */ + /* Note: Regulator disable useful for power saving */ + /* Reset ADVREGEN bit */ + hadc->Instance->CR &= ~ADC_CR_ADVREGEN; + + /* Bits ADC_CR_ADSTP, ADC_CR_ADSTART are in access mode "read-set": no direct reset applicable */ + /* No action */ + + /* Reset register CFGR1 */ + hadc->Instance->CFGR1 &= ~(ADC_CFGR1_AWDCH | ADC_CFGR1_AWDEN | ADC_CFGR1_AWDSGL | \ + ADC_CFGR1_DISCEN | ADC_CFGR1_AUTOFF | ADC_CFGR1_AUTDLY | \ + ADC_CFGR1_CONT | ADC_CFGR1_OVRMOD | ADC_CFGR1_EXTEN | \ + ADC_CFGR1_EXTSEL | ADC_CFGR1_ALIGN | ADC_CFGR1_RES | \ + ADC_CFGR1_SCANDIR| ADC_CFGR1_DMACFG | ADC_CFGR1_DMAEN); + + /* Reset register CFGR2 */ + hadc->Instance->CFGR2 &= ~(ADC_CFGR2_TOVS | ADC_CFGR2_OVSS | ADC_CFGR2_OVSR | \ + ADC_CFGR2_OVSE | ADC_CFGR2_CKMODE ); + + /* Reset register SMPR */ + hadc->Instance->SMPR &= ~(ADC_SMPR_SMPR); + + /* Reset register TR */ + hadc->Instance->TR &= ~(ADC_TR_LT | ADC_TR_HT); + + /* Reset register CALFACT */ + hadc->Instance->CALFACT &= ~(ADC_CALFACT_CALFACT); + + /* Reset register DR */ + /* bits in access mode read only, no direct reset applicable*/ + + /* Reset register CALFACT */ + hadc->Instance->CALFACT &= ~(ADC_CALFACT_CALFACT); + + + /* DeInit the low level hardware */ + HAL_ADC_MspDeInit(hadc); + + /* Set ADC error code to none */ + hadc->ErrorCode = HAL_ADC_ERROR_NONE; + + /* Change ADC state */ + hadc->State = HAL_ADC_STATE_RESET; + + /* Return function status */ + return HAL_OK; +} + +/** + * @brief Initializes the ADC MSP. + * @param hadc: pointer to a ADC_HandleTypeDef structure that contains + * the configuration information for the specified ADC. + * @retval None + */ +__weak void HAL_ADC_MspInit(ADC_HandleTypeDef* hadc) +{ + /* NOTE : This function Should not be modified, when the callback is needed, + the HAL_ADC_MspInit could be implemented in the user file + */ +} + +/** + * @brief DeInitializes the ADC MSP. + * @param hadc: pointer to a ADC_HandleTypeDef structure that contains + * the configuration information for the specified ADC. + * @retval None + */ +__weak void HAL_ADC_MspDeInit(ADC_HandleTypeDef* hadc) +{ + /* NOTE : This function Should not be modified, when the callback is needed, + the HAL_ADC_MspDeInit could be implemented in the user file + */ +} + +/** + * @} + */ + +/** @defgroup ADC_Group2 I/O operation functions + * @brief I/O operation functions + * +@verbatim + =============================================================================== + ##### IO operation functions ##### + =============================================================================== + [..] This section provides functions allowing to: + (+) Start conversion. + (+) Stop conversion. + (+) poll for conversion complete. + (+) poll for conversion event. + (+) Start conversion and enable interrupt. + (+) Stop conversion and disable interrupt. + (+) handle ADC interrupt request. + (+) Start conversion of regular channel and enable DMA transfer. + (+) Stop conversion of regular channel and disable DMA transfer. + (+) Get result of regular channel conversion. + (+) Handle ADC interrupt request. + +@endverbatim + * @{ + */ + + +/** + * @brief Enables ADC and starts conversion of the regular channels. + * @param hadc: pointer to a ADC_HandleTypeDef structure that contains + * the configuration information for the specified ADC. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_ADC_Start(ADC_HandleTypeDef* hadc) +{ + HAL_StatusTypeDef tmpHALStatus = HAL_OK; + + /* Check the parameters */ + assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance)); + + /* Perform ADC enable and conversion start if no conversion is on going */ + if (ADC_IS_CONVERSION_ONGOING(hadc) == RESET) + { + /* Process locked */ + __HAL_LOCK(hadc); + + /* Change ADC state */ + hadc->State = HAL_ADC_STATE_BUSY_REG; + + /* Set ADC error code to none */ + hadc->ErrorCode = HAL_ADC_ERROR_NONE; + + /* Enable the ADC peripheral */ + /* If low power mode AutoPowerOff is enabled, power-on/off phases are */ + /* performed automatically by hardware. */ + if (hadc->Init.LowPowerAutoPowerOff != ENABLE) + { + tmpHALStatus = ADC_Enable(hadc); + } + + /* Start conversion if ADC is effectively enabled */ + if (tmpHALStatus != HAL_ERROR) + { + /* ADC start conversion command */ + hadc->Instance->CR |= ADC_CR_ADSTART; + } + + /* Process unlocked */ + __HAL_UNLOCK(hadc); + } + else + { + tmpHALStatus = HAL_BUSY; + } + + /* Return function status */ + return tmpHALStatus; +} + +/** + * @brief Stop ADC conversion of regular channels, disable ADC peripheral. + * @param hadc: pointer to a ADC_HandleTypeDef structure that contains + * the configuration information for the specified ADC. + * @retval None + */ +HAL_StatusTypeDef HAL_ADC_Stop(ADC_HandleTypeDef* hadc) +{ + HAL_StatusTypeDef tmpHALStatus = HAL_OK; + + /* Process locked */ + __HAL_LOCK(hadc); + + /* 1. Stop potential conversion ongoing (regular conversion) */ + tmpHALStatus = ADC_ConversionStop(hadc, ADC_REGULAR_GROUP); + + /* 2. Disable ADC peripheral if conversions are effectively stopped */ + if (tmpHALStatus != HAL_ERROR) + { + /* Disable the ADC peripheral */ + tmpHALStatus = ADC_Disable(hadc); + + /* Check if ADC is effectively disabled */ + if ((hadc->State != HAL_ADC_STATE_ERROR) && (tmpHALStatus != HAL_ERROR)) + { + /* Change ADC state */ + hadc->State = HAL_ADC_STATE_READY; + } + else + { + return HAL_ERROR; + } + } + else + { + return HAL_ERROR; + } + + /* Process unlocked */ + __HAL_UNLOCK(hadc); + + /* Return function status */ + return HAL_OK; +} + +/** + * @brief Wait for regular group conversion to be completed. + * @note ADC conversion flags EOS (end of sequence) and EOC (end of + * conversion) are cleared by this function, with an exception: + * if low power feature "LowPowerAutoWait" is enabled, flags are + * not cleared to not interfere with this feature until data register + * is read using function HAL_ADC_GetValue(). + * @note This function cannot be used in a particular setup: ADC configured + * in DMA mode and polling for end of each conversion (ADC init + * parameter "EOCSelection" set to ADC_EOC_SINGLE_CONV). + * In this case, DMA resets the flag EOC and polling cannot be + * performed on each conversion. Nevertheless, polling can still + * be performed on the complete sequence. + * @param hadc: ADC handle + * @param Timeout: Timeout value in millisecond. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_ADC_PollForConversion(ADC_HandleTypeDef* hadc, uint32_t Timeout) +{ + uint32_t tickstart = 0; + uint32_t tmp_Flag_EOC; + + /* Check the parameters */ + assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance)); + + /* If end of conversion selected to end of sequence */ + if (hadc->Init.EOCSelection == ADC_EOC_SEQ_CONV) + { + tmp_Flag_EOC = ADC_FLAG_EOS; + } + /* If end of conversion selected to end of each conversion */ + else /* ADC_EOC_SINGLE_CONV */ + { + /* Verification that ADC configuration is compliant with polling for */ + /* each conversion: */ + /* Particular case is ADC configured in DMA mode and ADC sequencer with */ + /* several ranks and polling for end of each conversion. */ + /* For code simplicity sake, this particular case is generalized to */ + /* ADC configured in DMA mode and and polling for end of each conversion. */ + if (HAL_IS_BIT_SET(hadc->Instance->CFGR1, ADC_CFGR1_DMAEN)) + { + /* Update ADC state machine to error */ + hadc->State = HAL_ADC_STATE_ERROR; + + /* Process unlocked */ + __HAL_UNLOCK(hadc); + + return HAL_ERROR; + } + else + { + tmp_Flag_EOC = (ADC_FLAG_EOC | ADC_FLAG_EOS); + } + } + + /* Get tick */ + tickstart = HAL_GetTick(); + + /* Wait until End of Conversion flag is raised */ + while(HAL_IS_BIT_CLR(hadc->Instance->ISR, tmp_Flag_EOC)) + { + /* Check if timeout is disabled (set to infinite wait) */ + if(Timeout != HAL_MAX_DELAY) + { + if((Timeout == 0) || ((HAL_GetTick()-tickstart) > Timeout)) + { + /* Update ADC state machine to timeout */ + hadc->State = HAL_ADC_STATE_TIMEOUT; + + /* Process unlocked */ + __HAL_UNLOCK(hadc); + + return HAL_TIMEOUT; + } + } + } + + /* Clear end of conversion flag of regular group if low power feature */ + /* "LowPowerAutoWait " is disabled, to not interfere with this feature */ + /* until data register is read using function HAL_ADC_GetValue(). */ + if (hadc->Init.LowPowerAutoWait == DISABLE) + { + /* Clear regular group conversion flag */ + __HAL_ADC_CLEAR_FLAG(hadc, (ADC_FLAG_EOC | ADC_FLAG_EOS)); + } + + /* Update state machine on conversion status if not in error state */ + if(hadc->State != HAL_ADC_STATE_ERROR) + { + /* Change ADC state */ + hadc->State = HAL_ADC_STATE_EOC; + } + + /* Return ADC state */ + return HAL_OK; +} + +/** + * @brief Poll for conversion event. + * @param hadc: ADC handle. + * @param EventType: the ADC event type. + * This parameter can be one of the following values: + * @arg ADC_AWD_EVENT: ADC Analog watchdog event. + * @arg ADC_OVR_EVENT: ADC Overrun event. + * @param Timeout: Timeout value in millisecond. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_ADC_PollForEvent(ADC_HandleTypeDef* hadc, uint32_t EventType, uint32_t Timeout) +{ + uint32_t tickstart = 0; + + /* Check the parameters */ + assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance)); + assert_param(IS_ADC_EVENT_TYPE(EventType)); + + /* Get timeout */ + tickstart = HAL_GetTick(); + + /* Check selected event flag */ + while(!(__HAL_ADC_GET_FLAG(hadc,EventType))) + { + /* Check if timeout is disabled (set to infinite wait) */ + if(Timeout != HAL_MAX_DELAY) + { + if((Timeout == 0)||((HAL_GetTick() - tickstart ) > Timeout)) + { + /* Update ADC state machine to timeout */ + hadc->State = HAL_ADC_STATE_TIMEOUT; + + /* Process unlocked */ + __HAL_UNLOCK(hadc); + + return HAL_TIMEOUT; + } + } + } + + switch(EventType) + { + /* Check analog watchdog flag */ + case ADC_AWD_EVENT: + /* Change ADC state */ + hadc->State = HAL_ADC_STATE_AWD; + + /* Clear ADC analog watchdog flag */ + __HAL_ADC_CLEAR_FLAG(hadc, ADC_FLAG_AWD); + break; + + /* Case ADC_OVR_EVENT */ + default: + /* Change ADC state */ + hadc->State = HAL_ADC_STATE_ERROR; + + /* Clear ADC Overrun flag */ + __HAL_ADC_CLEAR_FLAG(hadc, ADC_FLAG_OVR); + break; + } + + /* Return ADC state */ + return HAL_OK; +} + +/** + * @brief Enables the interrupt and starts ADC conversion of regular channels. + * @param hadc: pointer to a ADC_HandleTypeDef structure that contains + * the configuration information for the specified ADC. + * @retval HAL status. + */ +HAL_StatusTypeDef HAL_ADC_Start_IT(ADC_HandleTypeDef* hadc) +{ + HAL_StatusTypeDef tmpHALStatus = HAL_OK; + + /* Check the parameters */ + assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance)); + + /* Perform ADC enable and conversion start if no conversion is on going */ + if (ADC_IS_CONVERSION_ONGOING(hadc) == RESET) + { + /* Process locked */ + __HAL_LOCK(hadc); + + /* State machine update: Change ADC state */ + hadc->State = HAL_ADC_STATE_BUSY_REG; + + /* Set ADC error code to none */ + hadc->ErrorCode = HAL_ADC_ERROR_NONE; + + /* Enable the ADC peripheral */ + /* If low power mode AutoPowerOff is enabled, power-on/off phases are */ + /* performed automatically by hardware. */ + if (hadc->Init.LowPowerAutoPowerOff != ENABLE) + { + tmpHALStatus = ADC_Enable(hadc); + } + + /* Start conversion if ADC is effectively enabled */ + if (tmpHALStatus != HAL_ERROR) + { + /* Enable ADC overrun interrupt */ + __HAL_ADC_ENABLE_IT(hadc, ADC_IT_OVR); + + /* Enable ADC end of conversion interrupt */ + switch(hadc->Init.EOCSelection) + { + case ADC_EOC_SEQ_CONV: + __HAL_ADC_DISABLE_IT(hadc, ADC_IT_EOC); + __HAL_ADC_ENABLE_IT(hadc, ADC_IT_EOS); + break; + /* case ADC_EOC_SINGLE_CONV */ + default: + __HAL_ADC_DISABLE_IT(hadc, ADC_IT_EOS); + __HAL_ADC_ENABLE_IT(hadc, ADC_IT_EOC); + break; + } + + /* ADC start conversion command */ + hadc->Instance->CR |= ADC_CR_ADSTART; + } + + else + { + tmpHALStatus = HAL_ERROR; + } + + /* Process unlocked */ + __HAL_UNLOCK(hadc); + } + else + { + tmpHALStatus = HAL_BUSY; + } + + /* Return function status */ + return tmpHALStatus; +} + +/** + * @brief Stop ADC conversion of regular channels, disable interruptions + * EOC/EOS/OVR, disable ADC peripheral. + * @param hadc: pointer to a ADC_HandleTypeDef structure that contains + * the configuration information for the specified ADC. + * @retval None + */ +HAL_StatusTypeDef HAL_ADC_Stop_IT(ADC_HandleTypeDef* hadc) +{ + HAL_StatusTypeDef tmpHALStatus = HAL_OK; + + /* Process locked */ + __HAL_LOCK(hadc); + + /* 1. Stop potential conversion ongoing (regular conversion) */ + tmpHALStatus = ADC_ConversionStop(hadc, ADC_REGULAR_GROUP); + + /* 2. Disable ADC peripheral if conversions are effectively stopped */ + if (tmpHALStatus != HAL_ERROR) + { + /* Disable ADC interrupts */ + __HAL_ADC_DISABLE_IT(hadc, (ADC_IT_EOC | ADC_IT_EOS | ADC_IT_OVR)); + + /* Disable the ADC peripheral */ + tmpHALStatus = ADC_Disable(hadc); + + /* Check if ADC is effectively disabled */ + if ((hadc->State != HAL_ADC_STATE_ERROR) && (tmpHALStatus != HAL_ERROR)) + { + /* Change ADC state */ + hadc->State = HAL_ADC_STATE_READY; + } + else + { + return HAL_ERROR; + } + } + else + { + return HAL_ERROR; + } + + + /* Process unlocked */ + __HAL_UNLOCK(hadc); + + /* Return function status */ + return HAL_OK; +} + +/** + * @brief Handles ADC interrupt request + * @param hadc: pointer to a ADC_HandleTypeDef structure that contains + * the configuration information for the specified ADC. + * @retval None + */ +void HAL_ADC_IRQHandler(ADC_HandleTypeDef* hadc) +{ + /* Check the parameters */ + assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance)); + assert_param(IS_ADC_EOC_SELECTION(hadc->Init.EOCSelection)); + + + /* Check End of Conversion flag for regular channels */ + if( (__HAL_ADC_GET_FLAG(hadc, ADC_FLAG_EOC) && __HAL_ADC_GET_IT_SOURCE(hadc, ADC_IT_EOC)) || \ + (__HAL_ADC_GET_FLAG(hadc, ADC_FLAG_EOS) && __HAL_ADC_GET_IT_SOURCE(hadc, ADC_IT_EOS)) ) + { + /* Change ADC state */ + hadc->State = HAL_ADC_STATE_EOC; + + + /* Disable interruption if no further conversion upcoming by continuous mode or external trigger */ + if((hadc->Init.ContinuousConvMode == DISABLE) && \ + (hadc->Init.ExternalTrigConvEdge == ADC_EXTERNALTRIGCONVEDGE_NONE) + ) + { + /* Allowed to modify bits ADC_IT_EOC/ADC_IT_EOS only if bit ADSTART==0 (no conversion on going) */ + if (HAL_IS_BIT_CLR(hadc->Instance->CR, ADC_CR_ADSTART)) + { + /* Cases of interruption after each conversion or after each sequence */ + /* If interruption after each sequence */ + if (hadc->Init.EOCSelection == ADC_EOC_SEQ_CONV) + { + /* Allowed to modify bits ADC_IT_EOC/ADC_IT_EOS/ADC_IT_OVR only if bit*/ + /* ADSTART==0 (no conversion on going) */ + if (ADC_IS_CONVERSION_ONGOING(hadc) == RESET) + { + /* If End of Sequence is reached, disable interrupts */ + if( __HAL_ADC_GET_FLAG(hadc, ADC_FLAG_EOS) ) + { + /* DISABLE ADC end of sequence conversion interrupt */ + /* DISABLE ADC overrun interrupt */ + __HAL_ADC_DISABLE_IT(hadc, ADC_IT_EOC | ADC_IT_EOS | ADC_IT_OVR); + } + } + else + { + /* Change ADC state to error state */ + hadc->State = HAL_ADC_STATE_ERROR; + /* Set ADC error code to ADC IP internal error */ + hadc->ErrorCode |= HAL_ADC_ERROR_INTERNAL; + } + } + /* If interruption after each conversion */ + else + { + /* DISABLE ADC end of single conversion interrupt */ + /* DISABLE ADC overrun interrupt */ + __HAL_ADC_DISABLE_IT(hadc, ADC_IT_EOC | ADC_IT_OVR); + } + } + else + { + /* Change ADC state to error state */ + hadc->State = HAL_ADC_STATE_ERROR; + } + } + + /* Conversion complete callback */ + /* Note: into callback, to determine if callback has been triggered from EOC or EOS, */ + /* it is possible to use: if( __HAL_ADC_GET_FLAG(hadc, ADC_FLAG_EOS)) */ + HAL_ADC_ConvCpltCallback(hadc); + + /* Clear regular channels conversion flag */ + if (hadc->Init.LowPowerAutoWait != ENABLE) + { + __HAL_ADC_CLEAR_FLAG(hadc, (ADC_FLAG_EOC | ADC_FLAG_EOS) ); + } + } + + + /* Check Analog watchdog flags */ + if( (__HAL_ADC_GET_FLAG(hadc, ADC_FLAG_AWD) && __HAL_ADC_GET_IT_SOURCE(hadc, ADC_IT_AWD))) + { + /* Change ADC state */ + hadc->State = HAL_ADC_STATE_AWD; + + /* Level out of window callback */ + HAL_ADC_LevelOutOfWindowCallback(hadc); + + /* Clear ADC Analog watchdog flag */ + __HAL_ADC_CLEAR_FLAG(hadc, ADC_FLAG_AWD); + } + + /* Check Overrun flag */ + if(__HAL_ADC_GET_FLAG(hadc, ADC_FLAG_OVR) && __HAL_ADC_GET_IT_SOURCE(hadc, ADC_IT_OVR)) + { + /* Change ADC state to overrun state */ + hadc->State = HAL_ADC_STATE_ERROR; + + /* Set ADC error code to overrun */ + hadc->ErrorCode |= HAL_ADC_ERROR_OVR; + + /* Clear the Overrun flag */ + __HAL_ADC_CLEAR_FLAG(hadc,ADC_FLAG_OVR); + + /* Error callback */ + HAL_ADC_ErrorCallback(hadc); + } +} + +/** + * @brief Enables ADC DMA request after last transfer (Single-ADC mode) and enables ADC peripheral + * @param hadc: pointer to a ADC_HandleTypeDef structure that contains + * the configuration information for the specified ADC. + * @param pData: The destination Buffer address. + * @param Length: The length of data to be transferred from ADC peripheral to memory. + * @retval None + */ +HAL_StatusTypeDef HAL_ADC_Start_DMA(ADC_HandleTypeDef* hadc, uint32_t* pData, uint32_t Length) +{ + HAL_StatusTypeDef tmpHALStatus = HAL_OK; + + /* Check the parameters */ + assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance)); + + /* Perform ADC enable and conversion start if no conversion is on going */ + if (ADC_IS_CONVERSION_ONGOING(hadc) == RESET) + { + /* Process locked */ + __HAL_LOCK(hadc); + + /* Change ADC state */ + hadc->State = HAL_ADC_STATE_BUSY_REG; + + /* Set ADC error code to none */ + hadc->ErrorCode = HAL_ADC_ERROR_NONE; + + /* Enable the ADC peripheral */ + /* If low power mode AutoPowerOff is enabled, power-on/off phases are */ + /* performed automatically by hardware. */ + if (hadc->Init.LowPowerAutoPowerOff != ENABLE) + { + tmpHALStatus = ADC_Enable(hadc); + } + + /* Start conversion if ADC is effectively enabled */ + if (tmpHALStatus != HAL_ERROR) + { + /* Enable ADC DMA mode */ + hadc->Instance->CFGR1 |= ADC_CFGR1_DMAEN; + + /* Set the DMA transfer complete callback */ + hadc->DMA_Handle->XferCpltCallback = ADC_DMAConvCplt; + + /* Set the DMA half transfer complete callback */ + hadc->DMA_Handle->XferHalfCpltCallback = ADC_DMAHalfConvCplt; + + /* Set the DMA error callback */ + hadc->DMA_Handle->XferErrorCallback = ADC_DMAError; + + /* Manage ADC and DMA start: ADC overrun interruption, DMA start, + ADC start (in case of SW start) */ + + /* Enable ADC overrun interrupt */ + __HAL_ADC_ENABLE_IT(hadc, ADC_IT_OVR); + + /* Enable the DMA Stream */ + HAL_DMA_Start_IT(hadc->DMA_Handle, (uint32_t)&hadc->Instance->DR, (uint32_t)pData, Length); + + /* ADC start conversion command */ + hadc->Instance->CR |= ADC_CR_ADSTART; + } + + /* Process unlocked */ + __HAL_UNLOCK(hadc); + } + else + { + tmpHALStatus = HAL_BUSY; + } + + /* Return function status */ + return tmpHALStatus; +} + +/** + * @brief Disable ADC DMA (Single-ADC mode), disable ADC peripheral + * @param hadc: pointer to a ADC_HandleTypeDef structure that contains + * the configuration information for the specified ADC. + * @retval None + */ +HAL_StatusTypeDef HAL_ADC_Stop_DMA(ADC_HandleTypeDef* hadc) +{ + HAL_StatusTypeDef tmpHALStatus = HAL_OK; + + /* Process locked */ + __HAL_LOCK(hadc); + + /* 1. Stop potential conversion ongoing (regular conversion) */ + tmpHALStatus = ADC_ConversionStop(hadc, ADC_REGULAR_GROUP); + + /* 2. Disable ADC peripheral if conversions are effectively stopped */ + if (tmpHALStatus != HAL_ERROR) + { + /* Disable ADC DMA (ADC DMA configuration ADC_CFGR_DMACFG is kept) */ + hadc->Instance->CFGR1 &= ~ADC_CFGR1_DMAEN; + + /* Disable the DMA Stream */ + if (HAL_DMA_Abort(hadc->DMA_Handle) != HAL_OK) + { + /* Update ADC state machine to error */ + hadc->State = HAL_ADC_STATE_ERROR; + + /* Process unlocked */ + __HAL_UNLOCK(hadc); + + return HAL_ERROR; + } + + /* Disable ADC overrun interrupt */ + __HAL_ADC_DISABLE_IT(hadc, ADC_IT_OVR); + + /* Disable the ADC peripheral */ + tmpHALStatus = ADC_Disable(hadc); + + /* Check if ADC is effectively disabled */ + if ((hadc->State != HAL_ADC_STATE_ERROR) && (tmpHALStatus != HAL_ERROR)) + { + /* Change ADC state */ + hadc->State = HAL_ADC_STATE_READY; + } + else + { + return HAL_ERROR; + } + } + else + { + return HAL_ERROR; + } + + /* Process unlocked */ + __HAL_UNLOCK(hadc); + + /* Return function status */ + return HAL_OK; +} + +/** + * @brief Gets the converted value from data register of regular channel. + * @param hadc: pointer to a ADC_HandleTypeDef structure that contains + * the configuration information for the specified ADC. + * @retval Converted value + */ +uint32_t HAL_ADC_GetValue(ADC_HandleTypeDef* hadc) +{ + /* Return the selected ADC converted value */ + return hadc->Instance->DR; +} + +/** + * @brief Regular conversion complete callback in non blocking mode + * @param hadc: pointer to a ADC_HandleTypeDef structure that contains + * the configuration information for the specified ADC. + * @retval None + */ +__weak void HAL_ADC_ConvCpltCallback(ADC_HandleTypeDef* hadc) +{ + /* NOTE : This function Should not be modified, when the callback is needed, + the HAL_ADC_ConvCpltCallback could be implemented in the user file + */ +} + +/** + * @brief Regular conversion half DMA transfer callback in non blocking mode + * @param hadc: pointer to a ADC_HandleTypeDef structure that contains + * the configuration information for the specified ADC. + * @retval None + */ +__weak void HAL_ADC_ConvHalfCpltCallback(ADC_HandleTypeDef* hadc) +{ + /* NOTE : This function Should not be modified, when the callback is needed, + the HAL_ADC_ConvHalfCpltCallback could be implemented in the user file + */ +} + +/** + * @brief Analog watchdog callback in non blocking mode + * @param hadc: pointer to a ADC_HandleTypeDef structure that contains + * the configuration information for the specified ADC. + * @retval None + */ +__weak void HAL_ADC_LevelOutOfWindowCallback(ADC_HandleTypeDef* hadc) +{ + /* NOTE : This function Should not be modified, when the callback is needed, + the HAL_ADC_LevelOoutOfWindowCallback could be implemented in the user file + */ +} + +/** + * @brief Error ADC callback. + * @param hadc: pointer to a ADC_HandleTypeDef structure that contains + * the configuration information for the specified ADC. + * @retval None + */ +__weak void HAL_ADC_ErrorCallback(ADC_HandleTypeDef *hadc) +{ + /* NOTE : This function Should not be modified, when the callback is needed, + the HAL_ADC_ErrorCallback could be implemented in the user file + */ +} + +/** + * @} + */ + +/** @defgroup ADC_Group3 Peripheral Control functions + * @brief Peripheral Control functions + * +@verbatim + =============================================================================== + ##### Peripheral Control functions ##### + =============================================================================== + [..] This section provides functions allowing to: + (+) Configure channels. + (+) Configure the analog watch dog. + +@endverbatim + * @{ + */ + + +/** + * @brief Configures the selected ADC regular channel: sampling time, + * offset,. + * @param hadc: pointer to a ADC_HandleTypeDef structure that contains + * the configuration information for the specified ADC. + * @param sConfig: ADC regular channel configuration structure. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_ADC_ConfigChannel(ADC_HandleTypeDef* hadc, ADC_ChannelConfTypeDef* sConfig) +{ + /* Check the parameters */ + assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance)); + assert_param(IS_ADC_CHANNEL(sConfig->Channel)); + + /* Process locked */ + __HAL_LOCK(hadc); + + /* Parameters update conditioned to ADC state: */ + /* Parameters that can be updated when ADC is disabled or enabled without */ + /* conversion on going : */ + /* - Channel number */ + /* - Management of internal measurement channels: Vbat/VrefInt/TempSensor */ + if (ADC_IS_CONVERSION_ONGOING(hadc) != RESET) + { + /* Update ADC state machine to error */ + hadc->State = HAL_ADC_STATE_ERROR; + /* Process unlocked */ + __HAL_UNLOCK(hadc); + return HAL_ERROR; + } + + /* Enable selected channels */ + hadc->Instance->CHSELR |= (uint32_t)(sConfig->Channel & ADC_CHANNEL_MASK); + + /* Management of internal measurement channels: Vlcd/VrefInt/TempSensor */ + /* internal measurement paths enable: If internal channel selected, enable */ + /* dedicated internal buffers and path. */ + + /* If Temperature sensor channel is selected, then enable the internal */ + /* buffers and path */ + if (((sConfig->Channel & ADC_CHANNEL_MASK) & ADC_CHANNEL_TEMPSENSOR ) == (ADC_CHANNEL_TEMPSENSOR & ADC_CHANNEL_MASK)) + { + ADC->CCR |= ADC_CCR_TSEN; + + /* Delay for temperature sensor stabilization time */ + ADC_DelayMicroSecond(ADC_TEMPSENSOR_DELAY_US); + } + + /* If VRefInt channel is selected, then enable the internal buffers and path */ + if (((sConfig->Channel & ADC_CHANNEL_MASK) & ADC_CHANNEL_VREFINT) == (ADC_CHANNEL_VREFINT & ADC_CHANNEL_MASK)) + { + ADC->CCR |= ADC_CCR_VREFEN; + } + + /* If Vlcd channel is selected, then enable the internal buffers and path */ + if (((sConfig->Channel & ADC_CHANNEL_MASK) & ADC_CHANNEL_VLCD) == (ADC_CHANNEL_VLCD & ADC_CHANNEL_MASK)) + { + ADC->CCR |= ADC_CCR_VLCDEN; + } + + /* Process unlocked */ + __HAL_UNLOCK(hadc); + + /* Return function status */ + return HAL_OK; +} + +/** + * @brief Configures the analog watchdog. + * @param hadc: pointer to a ADC_HandleTypeDef structure that contains + * the configuration information for the specified ADC. + * @param AnalogWDGConfig : pointer to an ADC_AnalogWDGConfTypeDef structure + * that contains the configuration information of ADC analog watchdog. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_ADC_AnalogWDGConfig(ADC_HandleTypeDef* hadc, ADC_AnalogWDGConfTypeDef* AnalogWDGConfig) +{ + uint32_t tmpAWDHighThresholdShifted; + uint32_t tmpAWDLowThresholdShifted; + + /* Check the parameters */ + assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance)); + assert_param(IS_ADC_ANALOG_WATCHDOG_MODE(AnalogWDGConfig->WatchdogMode)); + assert_param(IS_ADC_CHANNEL(AnalogWDGConfig->Channel)); + assert_param(IS_FUNCTIONAL_STATE(AnalogWDGConfig->ITMode)); + + assert_param(IS_ADC_RANGE(ADC_GET_RESOLUTION(hadc), AnalogWDGConfig->HighThreshold)); + assert_param(IS_ADC_RANGE(ADC_GET_RESOLUTION(hadc), AnalogWDGConfig->LowThreshold)); + + /* Process locked */ + __HAL_LOCK(hadc); + + /* Parameters update conditioned to ADC state: */ + /* Parameters that can be updated when ADC is disabled or enabled without */ + /* conversion on going : */ + /* - Analog watchdog channels */ + /* - Analog watchdog thresholds */ + if (ADC_IS_CONVERSION_ONGOING(hadc) != RESET) + { + /* Update ADC state machine to error */ + hadc->State = HAL_ADC_STATE_ERROR; + /* Process unlocked */ + __HAL_UNLOCK(hadc); + return HAL_ERROR; + } + + /* Configure ADC Analog watchdog interrupt */ + if(AnalogWDGConfig->ITMode == ENABLE) + { + /* Enable the ADC Analog watchdog interrupt */ + __HAL_ADC_ENABLE_IT(hadc, ADC_IT_AWD); + } + else + { + /* Disable the ADC Analog watchdog interrupt */ + __HAL_ADC_DISABLE_IT(hadc, ADC_IT_AWD); + } + + /* Configuration of analog watchdog: */ + /* - Set the analog watchdog mode */ + /* - Set the Analog watchdog channel (is not used if watchdog */ + /* mode "all channels": ADC_CFGR1_AWD1SGL=0) */ + hadc->Instance->CFGR1 &= ~( ADC_CFGR1_AWDSGL | + ADC_CFGR1_AWDEN | + ADC_CFGR1_AWDCH); + + hadc->Instance->CFGR1 |= ( AnalogWDGConfig->WatchdogMode | + (AnalogWDGConfig->Channel & ADC_CHANNEL_AWD_MASK)); + + + /* Shift the offset in function of the selected ADC resolution: Thresholds */ + /* have to be left-aligned on bit 11, the LSB (right bits) are set to 0 */ + tmpAWDHighThresholdShifted = ADC_AWD1THRESHOLD_SHIFT_RESOLUTION(hadc, AnalogWDGConfig->HighThreshold); + tmpAWDLowThresholdShifted = ADC_AWD1THRESHOLD_SHIFT_RESOLUTION(hadc, AnalogWDGConfig->LowThreshold); + + /* Clear High & Low high thresholds */ + hadc->Instance->TR &= (uint32_t) ~ (ADC_TR_HT | ADC_TR_LT); + + /* Set the high threshold */ + hadc->Instance->TR = ADC_TRX_HIGHTHRESHOLD (tmpAWDHighThresholdShifted); + /* Set the low threshold */ + hadc->Instance->TR |= tmpAWDLowThresholdShifted; + + /* Process unlocked */ + __HAL_UNLOCK(hadc); + + /* Return function status */ + return HAL_OK; +} + +/** + * @} + */ + +/** @defgroup ADC_Group4 ADC Peripheral State functions + * @brief ADC Peripheral State functions + * +@verbatim + =============================================================================== + ##### ADC Peripheral State functions ##### + =============================================================================== + [..] + This subsection provides functions allowing to + (+) Check the ADC state. + (+) handle ADC interrupt request. + +@endverbatim + * @{ + */ + +/** + * @brief return the ADC state + * @param hadc: pointer to a ADC_HandleTypeDef structure that contains + * the configuration information for the specified ADC. + * @retval HAL state + */ +HAL_ADC_StateTypeDef HAL_ADC_GetState(ADC_HandleTypeDef* hadc) +{ + /* Return ADC state */ + return hadc->State; +} + +/** + * @brief Return the ADC error code + * @param hadc: pointer to a ADC_HandleTypeDef structure that contains + * the configuration information for the specified ADC. + * @retval ADC Error Code + */ +uint32_t HAL_ADC_GetError(ADC_HandleTypeDef *hadc) +{ + return hadc->ErrorCode; +} + + +/** + * @} + */ + +/** + * @brief Enable the selected ADC. + * @note Prerequisite condition to use this function: ADC must be disabled + * and voltage regulator must be enabled (done into HAL_ADC_Init()). + * @note If low power mode AutoPowerOff is enabled, power-on/off phases are + * performed automatically by hardware. + * In this mode, this function is useless and must not be called because + * flag ADC_FLAG_RDY is not usable. + * Therefore, this function must be called under condition of + * "if (hadc->Init.LowPowerAutoPowerOff != ENABLE)". + * @param hadc: ADC handle + * @retval HAL status. + */ +static HAL_StatusTypeDef ADC_Enable(ADC_HandleTypeDef* hadc) +{ + uint32_t tickstart = 0; + + /* ADC enable and wait for ADC ready (in case of ADC is disabled or */ + /* enabling phase not yet completed: flag ADC ready not yet set). */ + /* Timeout implemented to not be stuck if ADC cannot be enabled (possible */ + /* causes: ADC clock not running, ...). */ + if (ADC_IS_ENABLE(hadc) == RESET) + { + /* Check if conditions to enable the ADC are fulfilled */ + if (ADC_ENABLING_CONDITIONS(hadc) == RESET) + { + /* Update ADC state machine to error */ + hadc->State = HAL_ADC_STATE_ERROR; + + /* Set ADC error code to ADC IP internal error */ + hadc->ErrorCode |= HAL_ADC_ERROR_INTERNAL; + + return HAL_ERROR; + } + + /* Enable the ADC peripheral */ + __HAL_ADC_ENABLE(hadc); + + /* Delay for ADC stabilization time. */ + ADC_DelayMicroSecond(ADC_STAB_DELAY_US); + + /* Wait for ADC effectively enabled */ + /* Get timeout */ + tickstart = HAL_GetTick(); + + /* Skip polling for RDY ADRDY when AutoOFF is enabled */ + if (hadc->Init.LowPowerAutoPowerOff != ENABLE) + { + while(__HAL_ADC_GET_FLAG(hadc, ADC_FLAG_RDY) == RESET) + { + /* Check for the Timeout */ + if(ADC_ENABLE_TIMEOUT != HAL_MAX_DELAY) + { + if((HAL_GetTick() - tickstart ) > ADC_ENABLE_TIMEOUT) + { + /* Update ADC state machine to error */ + hadc->State = HAL_ADC_STATE_ERROR; + + /* Set ADC error code to ADC IP internal error */ + hadc->ErrorCode |= HAL_ADC_ERROR_INTERNAL; + + return HAL_ERROR; + } + } + } + } + } + + /* Return HAL status */ + return HAL_OK; +} + +/** + * @brief Disable the selected ADC. + * @note Prerequisite condition to use this function: ADC conversions must be + * stopped to disable the ADC. + * @param hadc: ADC handle + * @retval HAL status. + */ +static HAL_StatusTypeDef ADC_Disable(ADC_HandleTypeDef* hadc) +{ + uint32_t tickstart = 0; + + /* Verification if ADC is not already disabled: */ + /* forbidden to disable ADC (set bit ADC_CR_ADDIS) if ADC is already */ + /* disabled. */ + if (ADC_IS_ENABLE(hadc) != RESET ) + { + /* Check if conditions to disable the ADC are fulfilled */ + if (ADC_DISABLING_CONDITIONS(hadc) != RESET) + { + /* Disable the ADC peripheral */ + __HAL_ADC_DISABLE(hadc); + } + else + { + /* Update ADC state machine to error */ + hadc->State = HAL_ADC_STATE_ERROR; + + /* Set ADC error code to ADC internal error */ + hadc->ErrorCode |= HAL_ADC_ERROR_INTERNAL; + + return HAL_ERROR; + } + + /* Wait for ADC effectively disabled */ + /* Get timeout */ + tickstart = HAL_GetTick(); + + while(HAL_IS_BIT_SET(hadc->Instance->CR, ADC_CR_ADEN)) + { + /* Check for the Timeout */ + if(ADC_ENABLE_TIMEOUT != HAL_MAX_DELAY) + { + if((HAL_GetTick() - tickstart ) > ADC_DISABLE_TIMEOUT) + { + /* Update ADC state machine to error */ + hadc->State = HAL_ADC_STATE_ERROR; + + /* Set ADC error code to ADC internal error */ + hadc->ErrorCode |= HAL_ADC_ERROR_INTERNAL; + + return HAL_ERROR; + } + } + } + } + + /* Return HAL status */ + return HAL_OK; +} + +/** + * @brief Stop ADC conversion. + * @note Prerequisite condition to use this function: ADC conversions must be + * stopped to disable the ADC. + * @param hadc: ADC handle + * @param ConversionGroup: Only ADC group regular. + * This parameter can be one of the following values: + * @arg ADC_REGULAR_GROUP: ADC regular conversion type. + * @retval HAL status. + */ +static HAL_StatusTypeDef ADC_ConversionStop(ADC_HandleTypeDef* hadc, uint32_t ConversionGroup) +{ + uint32_t tickstart = 0 ; + + /* Check the parameters */ + assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance)); + assert_param(IS_ADC_CONVERSION_GROUP(ConversionGroup)); + + /* Parameters update conditioned to ADC state: */ + /* Parameters that can be updated when ADC is disabled or enabled without */ + /* conversion on going : */ + if (ADC_IS_CONVERSION_ONGOING(hadc) != RESET) + { + /* Update ADC state machine to error */ + hadc->State = HAL_ADC_STATE_ERROR; + /* Process unlocked */ + return HAL_ERROR; + } + + /* Verification: if ADC is not already stopped, bypass this function */ + if (HAL_IS_BIT_SET(hadc->Instance->CR, ADC_CR_ADSTART)) + { + /* Stop potential conversion on regular group */ + if (ConversionGroup == ADC_REGULAR_GROUP) + { + /* Software is allowed to set ADSTP only when ADSTART=1 and ADDIS=0 */ + if (HAL_IS_BIT_SET(hadc->Instance->CR, ADC_CR_ADSTART) && \ + HAL_IS_BIT_CLR(hadc->Instance->CR, ADC_CR_ADDIS) ) + { + /* Stop conversions on regular group */ + hadc->Instance->CR |= ADC_CR_ADSTP; + } + } + + /* Wait for conversion effectively stopped */ + /* Get timeout */ + tickstart = HAL_GetTick(); + + while((hadc->Instance->CR & ADC_CR_ADSTART) != RESET) + { + /* Check for the Timeout */ + if(ADC_STOP_CONVERSION_TIMEOUT != HAL_MAX_DELAY) + { + if((HAL_GetTick() - tickstart ) > ADC_STOP_CONVERSION_TIMEOUT) + { + /* Update ADC state machine to error */ + hadc->State = HAL_ADC_STATE_ERROR; + + /* Set ADC error code to ADC IP internal error */ + hadc->ErrorCode |= HAL_ADC_ERROR_INTERNAL; + + return HAL_ERROR; + } + } + } + } + + /* Return HAL status */ + return HAL_OK; +} + +/** + * @brief DMA transfer complete callback. + * @param hdma: pointer to DMA handle. + * @retval None + */ +static void ADC_DMAConvCplt(DMA_HandleTypeDef *hdma) +{ + ADC_HandleTypeDef* hadc = ( ADC_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent; + + /* Change ADC state */ + hadc->State = HAL_ADC_STATE_EOC; + + HAL_ADC_ConvCpltCallback(hadc); +} + +/** + * @brief DMA half transfer complete callback. + * @param hdma: pointer to DMA handle. + * @retval None + */ +static void ADC_DMAHalfConvCplt(DMA_HandleTypeDef *hdma) +{ + ADC_HandleTypeDef* hadc = ( ADC_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent; + + /* Conversion complete callback */ + HAL_ADC_ConvHalfCpltCallback(hadc); +} + +/** + * @brief DMA error callback + * @param hdma: pointer to DMA handle. + * @retval None + */ +static void ADC_DMAError(DMA_HandleTypeDef *hdma) +{ + ADC_HandleTypeDef* hadc = ( ADC_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent; + hadc->State= HAL_ADC_STATE_ERROR; + /* Set ADC error code to DMA error */ + hadc->ErrorCode |= HAL_ADC_ERROR_DMA; + HAL_ADC_ErrorCallback(hadc); +} + +/** + * @brief Delay micro seconds + * @param microSecond : delay + * @retval None + */ +static void ADC_DelayMicroSecond(uint32_t microSecond) +{ + /* Compute number of CPU cycles to wait for */ + __IO uint32_t waitLoopIndex = (microSecond * (SystemCoreClock / 1000000)); + + while(waitLoopIndex != 0) + { + waitLoopIndex--; + } +} + +/** + * @} + */ + +#endif /* HAL_ADC_MODULE_ENABLED */ +/** + * @} + */ + +/** + * @} + */ + +/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |