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Dependents: Nucleo_Hello_Encoder BLE_iBeaconScan AM1805_DEMO DISCO-F429ZI_ExportTemplate1 ... more
Diff: targets/TARGET_STM/TARGET_STM32F0/device/stm32f0xx_hal_adc.c
- Revision:
- 149:156823d33999
- Parent:
- 144:ef7eb2e8f9f7
- Child:
- 156:95d6b41a828b
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/TARGET_STM/TARGET_STM32F0/device/stm32f0xx_hal_adc.c Fri Oct 28 11:17:30 2016 +0100
@@ -0,0 +1,2188 @@
+/**
+ ******************************************************************************
+ * @file stm32f0xx_hal_adc.c
+ * @author MCD Application Team
+ * @version V1.4.0
+ * @date 27-May-2016
+ * @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
+ * group, using 3 possible modes: polling, interruption or DMA.
+ * + Control functions
+ * ++ Channels configuration on regular group
+ * ++ Analog Watchdog configuration
+ * + State functions
+ * ++ ADC state machine management
+ * ++ Interrupts and flags management
+ * Other functions (extended functions) are available in file
+ * "stm32f0xx_hal_adc_ex.c".
+ *
+ @verbatim
+ ==============================================================================
+ ##### ADC peripheral features #####
+ ==============================================================================
+ [..]
+ (+) 12-bit, 10-bit, 8-bit or 6-bit configurable resolution
+
+ (+) Interrupt generation at the end of regular conversion and in case of
+ analog watchdog or overrun events.
+
+ (+) Single and continuous conversion modes.
+
+ (+) Scan mode for conversion of several channels sequentially.
+
+ (+) Data alignment with in-built data coherency.
+
+ (+) Programmable sampling time (common for all channels)
+
+ (+) ADC conversion of regular group.
+
+ (+) External trigger (timer or EXTI) with configurable polarity
+
+ (+) DMA request generation for transfer of conversions data of regular group.
+
+ (+) ADC calibration
+
+ (+) 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: from Vref- (connected to Vssa) to Vref+ (connected to
+ Vdda or to an external voltage reference).
+
+
+ ##### How to use this driver #####
+ ==============================================================================
+ [..]
+
+ *** Configuration of top level parameters related to ADC ***
+ ============================================================
+ [..]
+
+ (#) Enable the ADC interface
+ (++) As prerequisite, ADC clock must be configured at RCC top level.
+ Caution: On STM32F0, ADC clock frequency max is 14MHz (refer
+ to device datasheet).
+ Therefore, ADC clock prescaler must be configured in
+ function of ADC clock source frequency to remain below
+ this maximum frequency.
+
+ (++) Two clock settings are mandatory:
+ (+++) ADC clock (core clock, also possibly conversion clock).
+
+ (+++) ADC clock (conversions clock).
+ Two possible clock sources: synchronous clock derived from APB clock
+ or asynchronous clock derived from ADC dedicated HSI RC oscillator
+ 14MHz.
+ If asynchronous clock is selected, parameter "HSI14State" must be set either:
+ - to "...HSI14State = RCC_HSI14_ADC_CONTROL" to let the ADC control
+ the HSI14 oscillator enable/disable (if not used to supply the main
+ system clock): feature used if ADC mode LowPowerAutoPowerOff is
+ enabled.
+ - to "...HSI14State = RCC_HSI14_ON" to maintain the HSI14 oscillator
+ always enabled: can be used to supply the main system clock.
+
+ (+++) Example:
+ Into HAL_ADC_MspInit() (recommended code location) or with
+ other device clock parameters configuration:
+ (+++) __HAL_RCC_ADC1_CLK_ENABLE(); (mandatory)
+
+ HI14 enable or let under control of ADC: (optional: if asynchronous clock selected)
+ (+++) RCC_OscInitTypeDef RCC_OscInitStructure;
+ (+++) RCC_OscInitStructure.OscillatorType = RCC_OSCILLATORTYPE_HSI14;
+ (+++) RCC_OscInitStructure.HSI14CalibrationValue = RCC_HSI14CALIBRATION_DEFAULT;
+ (+++) RCC_OscInitStructure.HSI14State = RCC_HSI14_ADC_CONTROL;
+ (+++) RCC_OscInitStructure.PLL... (optional if used for system clock)
+ (+++) HAL_RCC_OscConfig(&RCC_OscInitStructure);
+
+ (++) ADC clock source and clock prescaler are configured at ADC level with
+ parameter "ClockPrescaler" using function HAL_ADC_Init().
+
+ (#) ADC pins configuration
+ (++) Enable the clock for the ADC GPIOs
+ using macro __HAL_RCC_GPIOx_CLK_ENABLE()
+ (++) Configure these ADC pins in analog mode
+ using function HAL_GPIO_Init()
+
+ (#) Optionally, in case of usage of ADC with interruptions:
+ (++) Configure the NVIC for ADC
+ using function HAL_NVIC_EnableIRQ(ADCx_IRQn)
+ (++) Insert the ADC interruption handler function HAL_ADC_IRQHandler()
+ into the function of corresponding ADC interruption vector
+ ADCx_IRQHandler().
+
+ (#) Optionally, in case of usage of DMA:
+ (++) Configure the DMA (DMA channel, mode normal or circular, ...)
+ using function HAL_DMA_Init().
+ (++) Configure the NVIC for DMA
+ using function HAL_NVIC_EnableIRQ(DMAx_Channelx_IRQn)
+ (++) Insert the ADC interruption handler function HAL_ADC_IRQHandler()
+ into the function of corresponding DMA interruption vector
+ DMAx_Channelx_IRQHandler().
+
+ *** Configuration of ADC, group regular, channels parameters ***
+ ================================================================
+ [..]
+
+ (#) Configure the ADC parameters (resolution, data alignment, ...)
+ and regular group parameters (conversion trigger, sequencer, ...)
+ using function HAL_ADC_Init().
+
+ (#) Configure the channels for regular group parameters (channel number,
+ channel rank into sequencer, ..., into regular group)
+ using function HAL_ADC_ConfigChannel().
+
+ (#) Optionally, configure the analog watchdog parameters (channels
+ monitored, thresholds, ...)
+ using function HAL_ADC_AnalogWDGConfig().
+
+ *** Execution of ADC conversions ***
+ ====================================
+ [..]
+
+ (#) Optionally, perform an automatic ADC calibration to improve the
+ conversion accuracy
+ using function HAL_ADCEx_Calibration_Start().
+
+ (#) ADC driver can be used among three modes: polling, interruption,
+ transfer by DMA.
+
+ (++) ADC conversion by polling:
+ (+++) Activate the ADC peripheral and start conversions
+ using function HAL_ADC_Start()
+ (+++) Wait for ADC conversion completion
+ using function HAL_ADC_PollForConversion()
+ (+++) Retrieve conversion results
+ using function HAL_ADC_GetValue()
+ (+++) Stop conversion and disable the ADC peripheral
+ using function HAL_ADC_Stop()
+
+ (++) ADC conversion by interruption:
+ (+++) Activate the ADC peripheral and start conversions
+ using function HAL_ADC_Start_IT()
+ (+++) Wait for ADC conversion completion by call of function
+ HAL_ADC_ConvCpltCallback()
+ (this function must be implemented in user program)
+ (+++) Retrieve conversion results
+ using function HAL_ADC_GetValue()
+ (+++) Stop conversion and disable the ADC peripheral
+ using function HAL_ADC_Stop_IT()
+
+ (++) ADC conversion with transfer by DMA:
+ (+++) Activate the ADC peripheral and start conversions
+ using function HAL_ADC_Start_DMA()
+ (+++) Wait for ADC conversion completion by call of function
+ HAL_ADC_ConvCpltCallback() or HAL_ADC_ConvHalfCpltCallback()
+ (these functions must be implemented in user program)
+ (+++) Conversion results are automatically transferred by DMA into
+ destination variable address.
+ (+++) Stop conversion and disable the ADC peripheral
+ using function HAL_ADC_Stop_DMA()
+
+ [..]
+
+ (@) Callback functions must be implemented in user program:
+ (+@) HAL_ADC_ErrorCallback()
+ (+@) HAL_ADC_LevelOutOfWindowCallback() (callback of analog watchdog)
+ (+@) HAL_ADC_ConvCpltCallback()
+ (+@) HAL_ADC_ConvHalfCpltCallback
+
+ *** Deinitialization of ADC ***
+ ============================================================
+ [..]
+
+ (#) Disable the ADC interface
+ (++) ADC clock can be hard reset and disabled at RCC top level.
+ (++) Hard reset of ADC peripherals
+ using macro __ADCx_FORCE_RESET(), __ADCx_RELEASE_RESET().
+ (++) ADC clock disable
+ using the equivalent macro/functions as configuration step.
+ (+++) Example:
+ Into HAL_ADC_MspDeInit() (recommended code location) or with
+ other device clock parameters configuration:
+ (+++) RCC_OscInitStructure.OscillatorType = RCC_OSCILLATORTYPE_HSI14;
+ (+++) RCC_OscInitStructure.HSI14State = RCC_HSI14_OFF; (if not used for system clock)
+ (+++) HAL_RCC_OscConfig(&RCC_OscInitStructure);
+
+ (#) ADC pins configuration
+ (++) Disable the clock for the ADC GPIOs
+ using macro __HAL_RCC_GPIOx_CLK_DISABLE()
+
+ (#) Optionally, in case of usage of ADC with interruptions:
+ (++) Disable the NVIC for ADC
+ using function HAL_NVIC_EnableIRQ(ADCx_IRQn)
+
+ (#) Optionally, in case of usage of DMA:
+ (++) Deinitialize the DMA
+ using function HAL_DMA_Init().
+ (++) Disable the NVIC for DMA
+ using function HAL_NVIC_EnableIRQ(DMAx_Channelx_IRQn)
+
+ [..]
+
+ @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 "stm32f0xx_hal.h"
+
+/** @addtogroup STM32F0xx_HAL_Driver
+ * @{
+ */
+
+/** @defgroup ADC ADC
+ * @brief ADC HAL module driver
+ * @{
+ */
+
+#ifdef HAL_ADC_MODULE_ENABLED
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/** @defgroup ADC_Private_Constants ADC Private Constants
+ * @{
+ */
+
+ /* Fixed timeout values for ADC calibration, enable settling time, disable */
+ /* settling time. */
+ /* Values defined to be higher than worst cases: low clock frequency, */
+ /* maximum prescaler. */
+ /* Ex of profile low frequency : Clock source at 0.1 MHz, ADC clock */
+ /* prescaler 4, sampling time 7.5 ADC clock cycles, resolution 12 bits. */
+ /* Unit: ms */
+ #define ADC_ENABLE_TIMEOUT ((uint32_t) 2)
+ #define ADC_DISABLE_TIMEOUT ((uint32_t) 2)
+ #define ADC_STOP_CONVERSION_TIMEOUT ((uint32_t) 2)
+
+ /* Delay for ADC stabilization time. */
+ /* Maximum delay is 1us (refer to device datasheet, parameter tSTAB). */
+ /* 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 -----------------------------------------------*/
+/** @defgroup ADC_Private_Functions ADC Private Functions
+ * @{
+ */
+static HAL_StatusTypeDef ADC_Enable(ADC_HandleTypeDef* hadc);
+static HAL_StatusTypeDef ADC_Disable(ADC_HandleTypeDef* hadc);
+static HAL_StatusTypeDef ADC_ConversionStop(ADC_HandleTypeDef* hadc);
+static void ADC_DMAConvCplt(DMA_HandleTypeDef *hdma);
+static void ADC_DMAHalfConvCplt(DMA_HandleTypeDef *hdma);
+static void ADC_DMAError(DMA_HandleTypeDef *hdma);
+/**
+ * @}
+ */
+
+/* Exported functions ---------------------------------------------------------*/
+
+/** @defgroup ADC_Exported_Functions ADC Exported Functions
+ * @{
+ */
+
+/** @defgroup ADC_Exported_Functions_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 ADC peripheral and regular group according to
+ * parameters specified in structure "ADC_InitTypeDef".
+ * @note As prerequisite, ADC clock must be configured at RCC top level
+ * depending on both possible clock sources: APB clock of HSI clock.
+ * See commented example code below that can be copied and uncommented
+ * into HAL_ADC_MspInit().
+ * @note Possibility to update parameters on the fly:
+ * This function initializes the ADC MSP (HAL_ADC_MspInit()) only when
+ * coming from ADC state reset. Following calls to this function can
+ * be used to reconfigure some parameters of ADC_InitTypeDef
+ * structure on the fly, without modifying MSP configuration. If ADC
+ * MSP has to be modified again, HAL_ADC_DeInit() must be called
+ * before HAL_ADC_Init().
+ * The setting of these parameters is conditioned to ADC state.
+ * For parameters constraints, see comments of structure
+ * "ADC_InitTypeDef".
+ * @note This function configures the ADC within 2 scopes: scope of entire
+ * ADC and scope of regular group. For parameters details, see comments
+ * of structure "ADC_InitTypeDef".
+ * @param hadc: ADC handle
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_ADC_Init(ADC_HandleTypeDef* hadc)
+{
+ HAL_StatusTypeDef tmp_hal_status = HAL_OK;
+ uint32_t tmpCFGR1 = 0;
+
+ /* 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_DATA_ALIGN(hadc->Init.DataAlign));
+ assert_param(IS_ADC_SCAN_MODE(hadc->Init.ScanConvMode));
+ 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_EXTTRIG(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.LowPowerAutoPowerOff));
+
+ /* As prerequisite, into HAL_ADC_MspInit(), ADC clock must be configured */
+ /* at RCC top level depending on both possible clock sources: */
+ /* APB clock or HSI clock. */
+ /* Refer to header of this file for more details on clock enabling procedure*/
+
+ /* Actions performed only if ADC is coming from state reset: */
+ /* - Initialization of ADC MSP */
+ /* - ADC voltage regulator enable */
+ if (hadc->State == HAL_ADC_STATE_RESET)
+ {
+ /* Initialize ADC error code */
+ ADC_CLEAR_ERRORCODE(hadc);
+
+ /* Allocate lock resource and initialize it */
+ hadc->Lock = HAL_UNLOCKED;
+
+ /* 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 on regular group (ADC can be */
+ /* enabled anyway, in case of call of this function to update a parameter */
+ /* on the fly). */
+ if (HAL_IS_BIT_CLR(hadc->State, HAL_ADC_STATE_ERROR_INTERNAL) &&
+ (tmp_hal_status == HAL_OK) &&
+ (ADC_IS_CONVERSION_ONGOING_REGULAR(hadc) == RESET) )
+ {
+ /* Set ADC state */
+ ADC_STATE_CLR_SET(hadc->State,
+ HAL_ADC_STATE_REG_BUSY,
+ HAL_ADC_STATE_BUSY_INTERNAL);
+
+ /* Parameters update conditioned to ADC state: */
+ /* Parameters that can be updated only when ADC is disabled: */
+ /* - ADC clock mode */
+ /* - ADC clock prescaler */
+ /* - ADC resolution */
+ if (ADC_IS_ENABLE(hadc) == RESET)
+ {
+ /* Some parameters of this register are not reset, since they are set */
+ /* by other functions and must be kept in case of usage of this */
+ /* function on the fly (update of a parameter of ADC_InitTypeDef */
+ /* without needing to reconfigure all other ADC groups/channels */
+ /* parameters): */
+ /* - internal measurement paths: Vbat, temperature sensor, Vref */
+ /* (set into HAL_ADC_ConfigChannel() ) */
+
+ /* Configuration of ADC resolution */
+ MODIFY_REG(hadc->Instance->CFGR1,
+ ADC_CFGR1_RES ,
+ hadc->Init.Resolution );
+
+ /* Configuration of ADC clock mode: clock source AHB or HSI with */
+ /* selectable prescaler */
+ MODIFY_REG(hadc->Instance->CFGR2 ,
+ ADC_CFGR2_CKMODE ,
+ hadc->Init.ClockPrescaler );
+ }
+
+ /* Configuration of ADC: */
+ /* - discontinuous mode */
+ /* - LowPowerAutoWait mode */
+ /* - LowPowerAutoPowerOff mode */
+ /* - continuous conversion mode */
+ /* - overrun */
+ /* - external trigger to start conversion */
+ /* - external trigger polarity */
+ /* - data alignment */
+ /* - resolution */
+ /* - scan direction */
+ /* - DMA continuous request */
+ hadc->Instance->CFGR1 &= ~( ADC_CFGR1_DISCEN |
+ ADC_CFGR1_AUTOFF |
+ ADC_CFGR1_AUTDLY |
+ ADC_CFGR1_CONT |
+ ADC_CFGR1_OVRMOD |
+ ADC_CFGR1_EXTSEL |
+ ADC_CFGR1_EXTEN |
+ ADC_CFGR1_ALIGN |
+ ADC_CFGR1_SCANDIR |
+ ADC_CFGR1_DMACFG );
+
+ tmpCFGR1 |= (ADC_CFGR1_AUTOWAIT(hadc->Init.LowPowerAutoWait) |
+ ADC_CFGR1_AUTOOFF(hadc->Init.LowPowerAutoPowerOff) |
+ ADC_CFGR1_CONTINUOUS(hadc->Init.ContinuousConvMode) |
+ ADC_CFGR1_OVERRUN(hadc->Init.Overrun) |
+ hadc->Init.DataAlign |
+ ADC_SCANDIR(hadc->Init.ScanConvMode) |
+ ADC_CFGR1_DMACONTREQ(hadc->Init.DMAContinuousRequests) );
+
+ /* Enable discontinuous mode only if continuous mode is disabled */
+ if (hadc->Init.DiscontinuousConvMode == ENABLE)
+ {
+ if (hadc->Init.ContinuousConvMode == DISABLE)
+ {
+ /* Enable the selected ADC group regular discontinuous mode */
+ tmpCFGR1 |= ADC_CFGR1_DISCEN;
+ }
+ else
+ {
+ /* ADC regular group discontinuous was intended to be enabled, */
+ /* but ADC regular group modes continuous and sequencer discontinuous */
+ /* cannot be enabled simultaneously. */
+
+ /* Update ADC state machine to error */
+ SET_BIT(hadc->State, HAL_ADC_STATE_ERROR_CONFIG);
+
+ /* Set ADC error code to ADC IP internal error */
+ SET_BIT(hadc->ErrorCode, HAL_ADC_ERROR_INTERNAL);
+ }
+ }
+
+ /* Enable external trigger if trigger selection is different of software */
+ /* start. */
+ /* Note: This configuration keeps the hardware feature of parameter */
+ /* ExternalTrigConvEdge "trigger edge none" equivalent to */
+ /* software start. */
+ if (hadc->Init.ExternalTrigConv != ADC_SOFTWARE_START)
+ {
+ tmpCFGR1 |= ( hadc->Init.ExternalTrigConv |
+ hadc->Init.ExternalTrigConvEdge );
+ }
+
+ /* Update ADC configuration register with previous settings */
+ hadc->Instance->CFGR1 |= tmpCFGR1;
+
+ /* Channel sampling time configuration */
+ /* Management of parameters "SamplingTimeCommon" and "SamplingTime" */
+ /* (obsolete): sampling time set in this function if parameter */
+ /* "SamplingTimeCommon" has been set to a valid sampling time. */
+ /* Otherwise, sampling time is set into ADC channel initialization */
+ /* structure with parameter "SamplingTime" (obsolete). */
+ if (IS_ADC_SAMPLE_TIME(hadc->Init.SamplingTimeCommon))
+ {
+ /* Channel sampling time configuration */
+ /* Clear the old sample time */
+ hadc->Instance->SMPR &= ~(ADC_SMPR_SMP);
+
+ /* Set the new sample time */
+ hadc->Instance->SMPR |= ADC_SMPR_SET(hadc->Init.SamplingTimeCommon);
+ }
+
+ /* Check back that ADC registers have effectively been configured to */
+ /* ensure of no potential problem of ADC core IP clocking. */
+ /* Check through register CFGR1 (excluding analog watchdog configuration: */
+ /* set into separate dedicated function, and bits of ADC resolution set */
+ /* out of temporary variable 'tmpCFGR1'). */
+ if ((hadc->Instance->CFGR1 & ~(ADC_CFGR1_AWDCH | ADC_CFGR1_AWDEN | ADC_CFGR1_AWDSGL | ADC_CFGR1_RES))
+ == tmpCFGR1)
+ {
+ /* Set ADC error code to none */
+ ADC_CLEAR_ERRORCODE(hadc);
+
+ /* Set the ADC state */
+ ADC_STATE_CLR_SET(hadc->State,
+ HAL_ADC_STATE_BUSY_INTERNAL,
+ HAL_ADC_STATE_READY);
+ }
+ else
+ {
+ /* Update ADC state machine to error */
+ ADC_STATE_CLR_SET(hadc->State,
+ HAL_ADC_STATE_BUSY_INTERNAL,
+ HAL_ADC_STATE_ERROR_INTERNAL);
+
+ /* Set ADC error code to ADC IP internal error */
+ SET_BIT(hadc->ErrorCode, HAL_ADC_ERROR_INTERNAL);
+
+ tmp_hal_status = HAL_ERROR;
+ }
+
+ }
+ else
+ {
+ /* Update ADC state machine to error */
+ SET_BIT(hadc->State, HAL_ADC_STATE_ERROR_INTERNAL);
+
+ tmp_hal_status = HAL_ERROR;
+ }
+
+ /* Return function status */
+ return tmp_hal_status;
+}
+
+
+/**
+ * @brief Deinitialize the ADC peripheral registers to their default reset
+ * values, with deinitialization of the ADC MSP.
+ * @note For devices with several ADCs: reset of ADC common registers is done
+ * only if all ADCs sharing the same common group are disabled.
+ * If this is not the case, reset of these common parameters reset is
+ * bypassed without error reporting: it can be the intended behaviour in
+ * case of reset of a single ADC while the other ADCs sharing the same
+ * common group is still running.
+ * @param hadc: ADC handle
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_ADC_DeInit(ADC_HandleTypeDef* hadc)
+{
+ HAL_StatusTypeDef tmp_hal_status = HAL_OK;
+
+ /* Check ADC handle */
+ if(hadc == NULL)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Check the parameters */
+ assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance));
+
+ /* Set ADC state */
+ SET_BIT(hadc->State, HAL_ADC_STATE_BUSY_INTERNAL);
+
+ /* Stop potential conversion on going, on regular group */
+ tmp_hal_status = ADC_ConversionStop(hadc);
+
+ /* Disable ADC peripheral if conversions are effectively stopped */
+ if (tmp_hal_status == HAL_OK)
+ {
+ /* Disable the ADC peripheral */
+ tmp_hal_status = ADC_Disable(hadc);
+
+ /* Check if ADC is effectively disabled */
+ if (tmp_hal_status != HAL_ERROR)
+ {
+ /* Change ADC state */
+ hadc->State = HAL_ADC_STATE_READY;
+ }
+ }
+
+
+ /* Configuration of ADC parameters if previous preliminary actions are */
+ /* correctly completed. */
+ if (tmp_hal_status != HAL_ERROR)
+ {
+
+ /* ========== Reset ADC registers ========== */
+ /* Reset register IER */
+ __HAL_ADC_DISABLE_IT(hadc, (ADC_IT_AWD | ADC_IT_OVR |
+ ADC_IT_EOS | ADC_IT_EOC |
+ ADC_IT_EOSMP | ADC_IT_RDY ) );
+
+ /* Reset register ISR */
+ __HAL_ADC_CLEAR_FLAG(hadc, (ADC_FLAG_AWD | ADC_FLAG_OVR |
+ ADC_FLAG_EOS | ADC_FLAG_EOC |
+ ADC_FLAG_EOSMP | ADC_FLAG_RDY ) );
+
+ /* Reset register CR */
+ /* Bits ADC_CR_ADCAL, ADC_CR_ADSTP, ADC_CR_ADSTART are in access mode */
+ /* "read-set": no direct reset applicable. */
+
+ /* Reset register CFGR1 */
+ hadc->Instance->CFGR1 &= ~(ADC_CFGR1_AWDCH | ADC_CFGR1_AWDEN | ADC_CFGR1_AWDSGL | ADC_CFGR1_DISCEN |
+ ADC_CFGR1_AUTOFF | ADC_CFGR1_WAIT | 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 */
+ /* Note: Update of ADC clock mode is conditioned to ADC state disabled: */
+ /* already done above. */
+ hadc->Instance->CFGR2 &= ~ADC_CFGR2_CKMODE;
+
+ /* Reset register SMPR */
+ hadc->Instance->SMPR &= ~ADC_SMPR_SMP;
+
+ /* Reset register TR1 */
+ hadc->Instance->TR &= ~(ADC_TR_HT | ADC_TR_LT);
+
+ /* Reset register CHSELR */
+ hadc->Instance->CHSELR &= ~(ADC_CHSELR_CHSEL18 | ADC_CHSELR_CHSEL17 | ADC_CHSELR_CHSEL16 |
+ ADC_CHSELR_CHSEL15 | ADC_CHSELR_CHSEL14 | ADC_CHSELR_CHSEL13 | ADC_CHSELR_CHSEL12 |
+ ADC_CHSELR_CHSEL11 | ADC_CHSELR_CHSEL10 | ADC_CHSELR_CHSEL9 | ADC_CHSELR_CHSEL8 |
+ ADC_CHSELR_CHSEL7 | ADC_CHSELR_CHSEL6 | ADC_CHSELR_CHSEL5 | ADC_CHSELR_CHSEL4 |
+ ADC_CHSELR_CHSEL3 | ADC_CHSELR_CHSEL2 | ADC_CHSELR_CHSEL1 | ADC_CHSELR_CHSEL0 );
+
+ /* Reset register DR */
+ /* bits in access mode read only, no direct reset applicable*/
+
+ /* Reset register CCR */
+ ADC->CCR &= ~(ADC_CCR_ALL);
+
+ /* ========== Hard reset ADC peripheral ========== */
+ /* Performs a global reset of the entire ADC peripheral: ADC state is */
+ /* forced to a similar state after device power-on. */
+ /* If needed, copy-paste and uncomment the following reset code into */
+ /* function "void HAL_ADC_MspInit(ADC_HandleTypeDef* hadc)": */
+ /* */
+ /* __HAL_RCC_ADC1_FORCE_RESET() */
+ /* __HAL_RCC_ADC1_RELEASE_RESET() */
+
+ /* DeInit the low level hardware */
+ HAL_ADC_MspDeInit(hadc);
+
+ /* Set ADC error code to none */
+ ADC_CLEAR_ERRORCODE(hadc);
+
+ /* Set ADC state */
+ hadc->State = HAL_ADC_STATE_RESET;
+ }
+
+ /* Process unlocked */
+ __HAL_UNLOCK(hadc);
+
+ /* Return function status */
+ return tmp_hal_status;
+}
+
+
+/**
+ * @brief Initializes the ADC MSP.
+ * @param hadc: ADC handle
+ * @retval None
+ */
+__weak void HAL_ADC_MspInit(ADC_HandleTypeDef* hadc)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(hadc);
+
+ /* NOTE : This function should not be modified. When the callback is needed,
+ function HAL_ADC_MspInit must be implemented in the user file.
+ */
+}
+
+/**
+ * @brief DeInitializes the ADC MSP.
+ * @param hadc: ADC handle
+ * @retval None
+ */
+__weak void HAL_ADC_MspDeInit(ADC_HandleTypeDef* hadc)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(hadc);
+
+ /* NOTE : This function should not be modified. When the callback is needed,
+ function HAL_ADC_MspDeInit must be implemented in the user file.
+ */
+}
+
+/**
+ * @}
+ */
+
+/** @defgroup ADC_Exported_Functions_Group2 IO operation functions
+ * @brief IO operation functions
+ *
+@verbatim
+ ===============================================================================
+ ##### IO operation functions #####
+ ===============================================================================
+ [..] This section provides functions allowing to:
+ (+) Start conversion of regular group.
+ (+) Stop conversion of regular group.
+ (+) Poll for conversion complete on regular group.
+ (+) Poll for conversion event.
+ (+) Get result of regular channel conversion.
+ (+) Start conversion of regular group and enable interruptions.
+ (+) Stop conversion of regular group and disable interruptions.
+ (+) Handle ADC interrupt request
+ (+) Start conversion of regular group and enable DMA transfer.
+ (+) Stop conversion of regular group and disable ADC DMA transfer.
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Enables ADC, starts conversion of regular group.
+ * Interruptions enabled in this function: None.
+ * @param hadc: ADC handle
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_ADC_Start(ADC_HandleTypeDef* hadc)
+{
+ HAL_StatusTypeDef tmp_hal_status = 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_REGULAR(hadc) == RESET)
+ {
+ /* Process locked */
+ __HAL_LOCK(hadc);
+
+ /* 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)
+ {
+ tmp_hal_status = ADC_Enable(hadc);
+ }
+
+ /* Start conversion if ADC is effectively enabled */
+ if (tmp_hal_status == HAL_OK)
+ {
+ /* Set ADC state */
+ /* - Clear state bitfield related to regular group conversion results */
+ /* - Set state bitfield related to regular operation */
+ ADC_STATE_CLR_SET(hadc->State,
+ HAL_ADC_STATE_READY | HAL_ADC_STATE_REG_EOC | HAL_ADC_STATE_REG_OVR | HAL_ADC_STATE_REG_EOSMP,
+ HAL_ADC_STATE_REG_BUSY);
+
+ /* Reset ADC all error code fields */
+ ADC_CLEAR_ERRORCODE(hadc);
+
+ /* Process unlocked */
+ /* Unlock before starting ADC conversions: in case of potential */
+ /* interruption, to let the process to ADC IRQ Handler. */
+ __HAL_UNLOCK(hadc);
+
+ /* Clear regular group conversion flag and overrun flag */
+ /* (To ensure of no unknown state from potential previous ADC */
+ /* operations) */
+ __HAL_ADC_CLEAR_FLAG(hadc, (ADC_FLAG_EOC | ADC_FLAG_EOS | ADC_FLAG_OVR));
+
+ /* Enable conversion of regular group. */
+ /* If software start has been selected, conversion starts immediately. */
+ /* If external trigger has been selected, conversion will start at next */
+ /* trigger event. */
+ hadc->Instance->CR |= ADC_CR_ADSTART;
+ }
+ }
+ else
+ {
+ tmp_hal_status = HAL_BUSY;
+ }
+
+ /* Return function status */
+ return tmp_hal_status;
+}
+
+/**
+ * @brief Stop ADC conversion of regular group, disable ADC peripheral.
+ * @param hadc: ADC handle
+ * @retval HAL status.
+ */
+HAL_StatusTypeDef HAL_ADC_Stop(ADC_HandleTypeDef* hadc)
+{
+ HAL_StatusTypeDef tmp_hal_status = HAL_OK;
+
+ /* Check the parameters */
+ assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance));
+
+ /* Process locked */
+ __HAL_LOCK(hadc);
+
+ /* 1. Stop potential conversion on going, on regular group */
+ tmp_hal_status = ADC_ConversionStop(hadc);
+
+ /* Disable ADC peripheral if conversions are effectively stopped */
+ if (tmp_hal_status == HAL_OK)
+ {
+ /* 2. Disable the ADC peripheral */
+ tmp_hal_status = ADC_Disable(hadc);
+
+ /* Check if ADC is effectively disabled */
+ if (tmp_hal_status == HAL_OK)
+ {
+ /* Set ADC state */
+ ADC_STATE_CLR_SET(hadc->State,
+ HAL_ADC_STATE_REG_BUSY,
+ HAL_ADC_STATE_READY);
+ }
+ }
+
+ /* Process unlocked */
+ __HAL_UNLOCK(hadc);
+
+ /* Return function status */
+ return tmp_hal_status;
+}
+
+/**
+ * @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 (ADC init
+ * parameter "EOCSelection" set to ADC_EOC_SEQ_CONV).
+ * @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;
+ 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 */
+ SET_BIT(hadc->State, HAL_ADC_STATE_ERROR_CONFIG);
+
+ /* Process unlocked */
+ __HAL_UNLOCK(hadc);
+
+ return HAL_ERROR;
+ }
+ else
+ {
+ tmp_Flag_EOC = (ADC_FLAG_EOC | ADC_FLAG_EOS);
+ }
+ }
+
+ /* Get tick count */
+ 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 */
+ SET_BIT(hadc->State, HAL_ADC_STATE_TIMEOUT);
+
+ /* Process unlocked */
+ __HAL_UNLOCK(hadc);
+
+ return HAL_TIMEOUT;
+ }
+ }
+ }
+
+ /* Update ADC state machine */
+ SET_BIT(hadc->State, HAL_ADC_STATE_REG_EOC);
+
+ /* Determine whether any further conversion upcoming on group regular */
+ /* by external trigger, continuous mode or scan sequence on going. */
+ if(ADC_IS_SOFTWARE_START_REGULAR(hadc) &&
+ (hadc->Init.ContinuousConvMode == DISABLE) )
+ {
+ /* If End of Sequence is reached, disable interrupts */
+ if( __HAL_ADC_GET_FLAG(hadc, ADC_FLAG_EOS) )
+ {
+ /* Allowed to modify bits ADC_IT_EOC/ADC_IT_EOS only if bit */
+ /* ADSTART==0 (no conversion on going) */
+ if (ADC_IS_CONVERSION_ONGOING_REGULAR(hadc) == RESET)
+ {
+ /* Disable ADC end of single conversion interrupt on group regular */
+ /* Note: Overrun interrupt was enabled with EOC interrupt in */
+ /* HAL_Start_IT(), but is not disabled here because can be used */
+ /* by overrun IRQ process below. */
+ __HAL_ADC_DISABLE_IT(hadc, ADC_IT_EOC | ADC_IT_EOS);
+
+ /* Set ADC state */
+ ADC_STATE_CLR_SET(hadc->State,
+ HAL_ADC_STATE_REG_BUSY,
+ HAL_ADC_STATE_READY);
+ }
+ else
+ {
+ /* Change ADC state to error state */
+ SET_BIT(hadc->State, HAL_ADC_STATE_ERROR_CONFIG);
+
+ /* Set ADC error code to ADC IP internal error */
+ SET_BIT(hadc->ErrorCode, HAL_ADC_ERROR_INTERNAL);
+ }
+ }
+ }
+
+ /* 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));
+ }
+
+ /* 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 tick count */
+ tickstart = HAL_GetTick();
+
+ /* Check selected event flag */
+ while(__HAL_ADC_GET_FLAG(hadc, EventType) == RESET)
+ {
+ /* 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 */
+ SET_BIT(hadc->State, HAL_ADC_STATE_TIMEOUT);
+
+ /* Process unlocked */
+ __HAL_UNLOCK(hadc);
+
+ return HAL_TIMEOUT;
+ }
+ }
+ }
+
+ switch(EventType)
+ {
+ /* Analog watchdog (level out of window) event */
+ case ADC_AWD_EVENT:
+ /* Set ADC state */
+ SET_BIT(hadc->State, HAL_ADC_STATE_AWD1);
+
+ /* Clear ADC analog watchdog flag */
+ __HAL_ADC_CLEAR_FLAG(hadc, ADC_FLAG_AWD);
+ break;
+
+ /* Overrun event */
+ default: /* Case ADC_OVR_EVENT */
+ /* If overrun is set to overwrite previous data, overrun event is not */
+ /* considered as an error. */
+ /* (cf ref manual "Managing conversions without using the DMA and without */
+ /* overrun ") */
+ if (hadc->Init.Overrun == ADC_OVR_DATA_PRESERVED)
+ {
+ /* Set ADC state */
+ SET_BIT(hadc->State, HAL_ADC_STATE_REG_OVR);
+
+ /* Set ADC error code to overrun */
+ SET_BIT(hadc->ErrorCode, HAL_ADC_ERROR_OVR);
+ }
+
+ /* Clear ADC Overrun flag */
+ __HAL_ADC_CLEAR_FLAG(hadc, ADC_FLAG_OVR);
+ break;
+ }
+
+ /* Return ADC state */
+ return HAL_OK;
+}
+
+/**
+ * @brief Enables ADC, starts conversion of regular group with interruption.
+ * Interruptions enabled in this function:
+ * - EOC (end of conversion of regular group) or EOS (end of
+ * sequence of regular group) depending on ADC initialization
+ * parameter "EOCSelection"
+ * - overrun (if available)
+ * Each of these interruptions has its dedicated callback function.
+ * @param hadc: ADC handle
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_ADC_Start_IT(ADC_HandleTypeDef* hadc)
+{
+ HAL_StatusTypeDef tmp_hal_status = 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_REGULAR(hadc) == RESET)
+ {
+ /* Process locked */
+ __HAL_LOCK(hadc);
+
+ /* 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)
+ {
+ tmp_hal_status = ADC_Enable(hadc);
+ }
+
+ /* Start conversion if ADC is effectively enabled */
+ if (tmp_hal_status == HAL_OK)
+ {
+ /* Set ADC state */
+ /* - Clear state bitfield related to regular group conversion results */
+ /* - Set state bitfield related to regular operation */
+ ADC_STATE_CLR_SET(hadc->State,
+ HAL_ADC_STATE_READY | HAL_ADC_STATE_REG_EOC | HAL_ADC_STATE_REG_OVR | HAL_ADC_STATE_REG_EOSMP,
+ HAL_ADC_STATE_REG_BUSY);
+
+ /* Reset ADC all error code fields */
+ ADC_CLEAR_ERRORCODE(hadc);
+
+ /* Process unlocked */
+ /* Unlock before starting ADC conversions: in case of potential */
+ /* interruption, to let the process to ADC IRQ Handler. */
+ __HAL_UNLOCK(hadc);
+
+ /* Clear regular group conversion flag and overrun flag */
+ /* (To ensure of no unknown state from potential previous ADC */
+ /* operations) */
+ __HAL_ADC_CLEAR_FLAG(hadc, (ADC_FLAG_EOC | ADC_FLAG_EOS | ADC_FLAG_OVR));
+
+ /* Enable ADC end of conversion interrupt */
+ /* Enable ADC overrun 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 | ADC_IT_OVR));
+ break;
+ /* case ADC_EOC_SINGLE_CONV */
+ default:
+ __HAL_ADC_ENABLE_IT(hadc, (ADC_IT_EOC | ADC_IT_EOS | ADC_IT_OVR));
+ break;
+ }
+
+ /* Enable conversion of regular group. */
+ /* If software start has been selected, conversion starts immediately. */
+ /* If external trigger has been selected, conversion will start at next */
+ /* trigger event. */
+ hadc->Instance->CR |= ADC_CR_ADSTART;
+ }
+ }
+ else
+ {
+ tmp_hal_status = HAL_BUSY;
+ }
+
+ /* Return function status */
+ return tmp_hal_status;
+}
+
+
+/**
+ * @brief Stop ADC conversion of regular group, disable interruption of
+ * end-of-conversion, disable ADC peripheral.
+ * @param hadc: ADC handle
+ * @retval HAL status.
+ */
+HAL_StatusTypeDef HAL_ADC_Stop_IT(ADC_HandleTypeDef* hadc)
+{
+ HAL_StatusTypeDef tmp_hal_status = HAL_OK;
+
+ /* Check the parameters */
+ assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance));
+
+ /* Process locked */
+ __HAL_LOCK(hadc);
+
+ /* 1. Stop potential conversion on going, on regular group */
+ tmp_hal_status = ADC_ConversionStop(hadc);
+
+ /* Disable ADC peripheral if conversions are effectively stopped */
+ if (tmp_hal_status == HAL_OK)
+ {
+ /* Disable ADC end of conversion interrupt for regular group */
+ /* Disable ADC overrun interrupt */
+ __HAL_ADC_DISABLE_IT(hadc, (ADC_IT_EOC | ADC_IT_EOS | ADC_IT_OVR));
+
+ /* 2. Disable the ADC peripheral */
+ tmp_hal_status = ADC_Disable(hadc);
+
+ /* Check if ADC is effectively disabled */
+ if (tmp_hal_status == HAL_OK)
+ {
+ /* Set ADC state */
+ ADC_STATE_CLR_SET(hadc->State,
+ HAL_ADC_STATE_REG_BUSY,
+ HAL_ADC_STATE_READY);
+ }
+ }
+
+ /* Process unlocked */
+ __HAL_UNLOCK(hadc);
+
+ /* Return function status */
+ return tmp_hal_status;
+}
+
+/**
+ * @brief Enables ADC, starts conversion of regular group and transfers result
+ * through DMA.
+ * Interruptions enabled in this function:
+ * - DMA transfer complete
+ * - DMA half transfer
+ * - overrun
+ * Each of these interruptions has its dedicated callback function.
+ * @param hadc: ADC handle
+ * @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 tmp_hal_status = 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_REGULAR(hadc) == RESET)
+ {
+ /* Process locked */
+ __HAL_LOCK(hadc);
+
+ /* 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)
+ {
+ tmp_hal_status = ADC_Enable(hadc);
+ }
+
+ /* Start conversion if ADC is effectively enabled */
+ if (tmp_hal_status == HAL_OK)
+ {
+ /* Set ADC state */
+ /* - Clear state bitfield related to regular group conversion results */
+ /* - Set state bitfield related to regular operation */
+ ADC_STATE_CLR_SET(hadc->State,
+ HAL_ADC_STATE_READY | HAL_ADC_STATE_REG_EOC | HAL_ADC_STATE_REG_OVR | HAL_ADC_STATE_REG_EOSMP,
+ HAL_ADC_STATE_REG_BUSY);
+
+ /* Reset ADC all error code fields */
+ ADC_CLEAR_ERRORCODE(hadc);
+
+ /* Process unlocked */
+ /* Unlock before starting ADC conversions: in case of potential */
+ /* interruption, to let the process to ADC IRQ Handler. */
+ __HAL_UNLOCK(hadc);
+
+ /* 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): */
+
+ /* Clear regular group conversion flag and overrun flag */
+ /* (To ensure of no unknown state from potential previous ADC */
+ /* operations) */
+ __HAL_ADC_CLEAR_FLAG(hadc, (ADC_FLAG_EOC | ADC_FLAG_EOS | ADC_FLAG_OVR));
+
+ /* Enable ADC overrun interrupt */
+ __HAL_ADC_ENABLE_IT(hadc, ADC_IT_OVR);
+
+ /* Enable ADC DMA mode */
+ hadc->Instance->CFGR1 |= ADC_CFGR1_DMAEN;
+
+ /* Start the DMA channel */
+ HAL_DMA_Start_IT(hadc->DMA_Handle, (uint32_t)&hadc->Instance->DR, (uint32_t)pData, Length);
+
+ /* Enable conversion of regular group. */
+ /* If software start has been selected, conversion starts immediately. */
+ /* If external trigger has been selected, conversion will start at next */
+ /* trigger event. */
+ hadc->Instance->CR |= ADC_CR_ADSTART;
+ }
+ }
+ else
+ {
+ tmp_hal_status = HAL_BUSY;
+ }
+
+ /* Return function status */
+ return tmp_hal_status;
+}
+
+/**
+ * @brief Stop ADC conversion of regular group, disable ADC DMA transfer, disable
+ * ADC peripheral.
+ * Each of these interruptions has its dedicated callback function.
+ * @param hadc: ADC handle
+ * @retval HAL status.
+ */
+HAL_StatusTypeDef HAL_ADC_Stop_DMA(ADC_HandleTypeDef* hadc)
+{
+ HAL_StatusTypeDef tmp_hal_status = HAL_OK;
+
+ /* Check the parameters */
+ assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance));
+
+ /* Process locked */
+ __HAL_LOCK(hadc);
+
+ /* 1. Stop potential conversion on going, on regular group */
+ tmp_hal_status = ADC_ConversionStop(hadc);
+
+ /* Disable ADC peripheral if conversions are effectively stopped */
+ if (tmp_hal_status == HAL_OK)
+ {
+ /* Disable ADC DMA (ADC DMA configuration ADC_CFGR_DMACFG is kept) */
+ hadc->Instance->CFGR1 &= ~ADC_CFGR1_DMAEN;
+
+ /* Disable the DMA channel (in case of DMA in circular mode or stop while */
+ /* while DMA transfer is on going) */
+ tmp_hal_status = HAL_DMA_Abort(hadc->DMA_Handle);
+
+ /* Check if DMA channel effectively disabled */
+ if (tmp_hal_status != HAL_OK)
+ {
+ /* Update ADC state machine to error */
+ SET_BIT(hadc->State, HAL_ADC_STATE_ERROR_DMA);
+ }
+
+ /* Disable ADC overrun interrupt */
+ __HAL_ADC_DISABLE_IT(hadc, ADC_IT_OVR);
+
+ /* 2. Disable the ADC peripheral */
+ /* Update "tmp_hal_status" only if DMA channel disabling passed, to keep */
+ /* in memory a potential failing status. */
+ if (tmp_hal_status == HAL_OK)
+ {
+ tmp_hal_status = ADC_Disable(hadc);
+ }
+ else
+ {
+ ADC_Disable(hadc);
+ }
+
+ /* Check if ADC is effectively disabled */
+ if (tmp_hal_status == HAL_OK)
+ {
+ /* Set ADC state */
+ ADC_STATE_CLR_SET(hadc->State,
+ HAL_ADC_STATE_REG_BUSY,
+ HAL_ADC_STATE_READY);
+ }
+
+ }
+
+ /* Process unlocked */
+ __HAL_UNLOCK(hadc);
+
+ /* Return function status */
+ return tmp_hal_status;
+}
+
+/**
+ * @brief Get ADC regular group conversion result.
+ * @note Reading register DR automatically clears ADC flag EOC
+ * (ADC group regular end of unitary conversion).
+ * @note This function does not clear ADC flag EOS
+ * (ADC group regular end of sequence conversion).
+ * Occurrence of flag EOS rising:
+ * - If sequencer is composed of 1 rank, flag EOS is equivalent
+ * to flag EOC.
+ * - If sequencer is composed of several ranks, during the scan
+ * sequence flag EOC only is raised, at the end of the scan sequence
+ * both flags EOC and EOS are raised.
+ * To clear this flag, either use function:
+ * in programming model IT: @ref HAL_ADC_IRQHandler(), in programming
+ * model polling: @ref HAL_ADC_PollForConversion()
+ * or @ref __HAL_ADC_CLEAR_FLAG(&hadc, ADC_FLAG_EOS).
+ * @param hadc: ADC handle
+ * @retval ADC group regular conversion data
+ */
+uint32_t HAL_ADC_GetValue(ADC_HandleTypeDef* hadc)
+{
+ /* Check the parameters */
+ assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance));
+
+ /* Note: EOC flag is not cleared here by software because automatically */
+ /* cleared by hardware when reading register DR. */
+
+ /* Return ADC converted value */
+ return hadc->Instance->DR;
+}
+
+/**
+ * @brief Handles ADC interrupt request.
+ * @param hadc: ADC handle
+ * @retval None
+ */
+void HAL_ADC_IRQHandler(ADC_HandleTypeDef* hadc)
+{
+ /* Check the parameters */
+ assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance));
+ assert_param(IS_FUNCTIONAL_STATE(hadc->Init.ContinuousConvMode));
+ assert_param(IS_ADC_EOC_SELECTION(hadc->Init.EOCSelection));
+
+ /* ========== Check End of Conversion flag for regular group ========== */
+ 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)) )
+ {
+ /* Update state machine on conversion status if not in error state */
+ if (HAL_IS_BIT_CLR(hadc->State, HAL_ADC_STATE_ERROR_INTERNAL))
+ {
+ /* Set ADC state */
+ SET_BIT(hadc->State, HAL_ADC_STATE_REG_EOC);
+ }
+
+ /* Determine whether any further conversion upcoming on group regular */
+ /* by external trigger, continuous mode or scan sequence on going. */
+ if(ADC_IS_SOFTWARE_START_REGULAR(hadc) &&
+ (hadc->Init.ContinuousConvMode == DISABLE) )
+ {
+ /* If End of Sequence is reached, disable interrupts */
+ if( __HAL_ADC_GET_FLAG(hadc, ADC_FLAG_EOS) )
+ {
+ /* Allowed to modify bits ADC_IT_EOC/ADC_IT_EOS only if bit */
+ /* ADSTART==0 (no conversion on going) */
+ if (ADC_IS_CONVERSION_ONGOING_REGULAR(hadc) == RESET)
+ {
+ /* Disable ADC end of single conversion interrupt on group regular */
+ /* Note: Overrun interrupt was enabled with EOC interrupt in */
+ /* HAL_Start_IT(), but is not disabled here because can be used */
+ /* by overrun IRQ process below. */
+ __HAL_ADC_DISABLE_IT(hadc, ADC_IT_EOC | ADC_IT_EOS);
+
+ /* Set ADC state */
+ ADC_STATE_CLR_SET(hadc->State,
+ HAL_ADC_STATE_REG_BUSY,
+ HAL_ADC_STATE_READY);
+ }
+ else
+ {
+ /* Change ADC state to error state */
+ SET_BIT(hadc->State, HAL_ADC_STATE_ERROR_CONFIG);
+
+ /* Set ADC error code to ADC IP internal error */
+ SET_BIT(hadc->ErrorCode, HAL_ADC_ERROR_INTERNAL);
+ }
+ }
+ }
+
+ /* Conversion complete callback */
+ /* Note: into callback, to determine if conversion has been triggered */
+ /* from EOC or EOS, possibility to use: */
+ /* " if( __HAL_ADC_GET_FLAG(&hadc, ADC_FLAG_EOS)) " */
+ HAL_ADC_ConvCpltCallback(hadc);
+
+
+ /* Clear regular group conversion flag */
+ /* Note: in case of overrun set to ADC_OVR_DATA_PRESERVED, end of */
+ /* conversion flags clear induces the release of the preserved data.*/
+ /* Therefore, if the preserved data value is needed, it must be */
+ /* read preliminarily into HAL_ADC_ConvCpltCallback(). */
+ __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))
+ {
+ /* Set ADC state */
+ SET_BIT(hadc->State, HAL_ADC_STATE_AWD1);
+
+ /* 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))
+ {
+ /* If overrun is set to overwrite previous data (default setting), */
+ /* overrun event is not considered as an error. */
+ /* (cf ref manual "Managing conversions without using the DMA and without */
+ /* overrun ") */
+ /* Exception for usage with DMA overrun event always considered as an */
+ /* error. */
+ if ((hadc->Init.Overrun == ADC_OVR_DATA_PRESERVED) ||
+ HAL_IS_BIT_SET(hadc->Instance->CFGR1, ADC_CFGR1_DMAEN) )
+ {
+ /* Set ADC error code to overrun */
+ SET_BIT(hadc->ErrorCode, HAL_ADC_ERROR_OVR);
+
+ /* Clear ADC overrun flag */
+ __HAL_ADC_CLEAR_FLAG(hadc, ADC_FLAG_OVR);
+
+ /* Error callback */
+ HAL_ADC_ErrorCallback(hadc);
+ }
+
+ /* Clear the Overrun flag */
+ __HAL_ADC_CLEAR_FLAG(hadc, ADC_FLAG_OVR);
+ }
+
+}
+
+
+/**
+ * @brief Conversion complete callback in non blocking mode
+ * @param hadc: ADC handle
+ * @retval None
+ */
+__weak void HAL_ADC_ConvCpltCallback(ADC_HandleTypeDef* hadc)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(hadc);
+
+ /* NOTE : This function should not be modified. When the callback is needed,
+ function HAL_ADC_ConvCpltCallback must be implemented in the user file.
+ */
+}
+
+/**
+ * @brief Conversion DMA half-transfer callback in non blocking mode
+ * @param hadc: ADC handle
+ * @retval None
+ */
+__weak void HAL_ADC_ConvHalfCpltCallback(ADC_HandleTypeDef* hadc)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(hadc);
+
+ /* NOTE : This function should not be modified. When the callback is needed,
+ function HAL_ADC_ConvHalfCpltCallback must be implemented in the user file.
+ */
+}
+
+/**
+ * @brief Analog watchdog callback in non blocking mode.
+ * @param hadc: ADC handle
+ * @retval None
+ */
+__weak void HAL_ADC_LevelOutOfWindowCallback(ADC_HandleTypeDef* hadc)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(hadc);
+
+ /* NOTE : This function should not be modified. When the callback is needed,
+ function HAL_ADC_LevelOoutOfWindowCallback must be implemented in the user file.
+ */
+}
+
+/**
+ * @brief ADC error callback in non blocking mode
+ * (ADC conversion with interruption or transfer by DMA)
+ * @param hadc: ADC handle
+ * @retval None
+ */
+__weak void HAL_ADC_ErrorCallback(ADC_HandleTypeDef *hadc)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(hadc);
+
+ /* NOTE : This function should not be modified. When the callback is needed,
+ function HAL_ADC_ErrorCallback must be implemented in the user file.
+ */
+}
+
+
+/**
+ * @}
+ */
+
+/** @defgroup ADC_Exported_Functions_Group3 Peripheral Control functions
+ * @brief Peripheral Control functions
+ *
+@verbatim
+ ===============================================================================
+ ##### Peripheral Control functions #####
+ ===============================================================================
+ [..] This section provides functions allowing to:
+ (+) Configure channels on regular group
+ (+) Configure the analog watchdog
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Configures the the selected channel to be linked to the regular
+ * group.
+ * @note In case of usage of internal measurement channels:
+ * VrefInt/Vbat/TempSensor.
+ * Sampling time constraints must be respected (sampling time can be
+ * adjusted in function of ADC clock frequency and sampling time
+ * setting).
+ * Refer to device datasheet for timings values, parameters TS_vrefint,
+ * TS_vbat, TS_temp (values rough order: 5us to 17us).
+ * These internal paths can be be disabled using function
+ * HAL_ADC_DeInit().
+ * @note Possibility to update parameters on the fly:
+ * This function initializes channel into regular group, following
+ * calls to this function can be used to reconfigure some parameters
+ * of structure "ADC_ChannelConfTypeDef" on the fly, without reseting
+ * the ADC.
+ * The setting of these parameters is conditioned to ADC state.
+ * For parameters constraints, see comments of structure
+ * "ADC_ChannelConfTypeDef".
+ * @param hadc: ADC handle
+ * @param sConfig: Structure of ADC channel for regular group.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_ADC_ConfigChannel(ADC_HandleTypeDef* hadc, ADC_ChannelConfTypeDef* sConfig)
+{
+ HAL_StatusTypeDef tmp_hal_status = HAL_OK;
+ __IO uint32_t wait_loop_index = 0;
+
+ /* Check the parameters */
+ assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance));
+ assert_param(IS_ADC_CHANNEL(sConfig->Channel));
+ assert_param(IS_ADC_RANK(sConfig->Rank));
+
+ if (! IS_ADC_SAMPLE_TIME(hadc->Init.SamplingTimeCommon))
+ {
+ assert_param(IS_ADC_SAMPLE_TIME(sConfig->SamplingTime));
+ }
+
+ /* 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 on regular group: */
+ /* - Channel number */
+ /* - Channel sampling time */
+ /* - Management of internal measurement channels: VrefInt/TempSensor/Vbat */
+ if (ADC_IS_CONVERSION_ONGOING_REGULAR(hadc) == RESET)
+ {
+ /* Configure channel: depending on rank setting, add it or remove it from */
+ /* ADC conversion sequencer. */
+ if (sConfig->Rank != ADC_RANK_NONE)
+ {
+ /* Regular sequence configuration */
+ /* Set the channel selection register from the selected channel */
+ hadc->Instance->CHSELR |= ADC_CHSELR_CHANNEL(sConfig->Channel);
+
+ /* Channel sampling time configuration */
+ /* Management of parameters "SamplingTimeCommon" and "SamplingTime" */
+ /* (obsolete): sampling time set in this function with */
+ /* parameter "SamplingTime" (obsolete) only if not already set into */
+ /* ADC initialization structure with parameter "SamplingTimeCommon". */
+ if (! IS_ADC_SAMPLE_TIME(hadc->Init.SamplingTimeCommon))
+ {
+ /* Modify sampling time if needed (not needed in case of reoccurrence */
+ /* for several channels programmed consecutively into the sequencer) */
+ if (sConfig->SamplingTime != ADC_GET_SAMPLINGTIME(hadc))
+ {
+ /* Channel sampling time configuration */
+ /* Clear the old sample time */
+ hadc->Instance->SMPR &= ~(ADC_SMPR_SMP);
+
+ /* Set the new sample time */
+ hadc->Instance->SMPR |= ADC_SMPR_SET(sConfig->SamplingTime);
+ }
+ }
+
+ /* Management of internal measurement channels: VrefInt/TempSensor/Vbat */
+ /* internal measurement paths enable: If internal channel selected, */
+ /* enable dedicated internal buffers and path. */
+ /* Note: these internal measurement paths can be disabled using */
+ /* HAL_ADC_DeInit() or removing the channel from sequencer with */
+ /* channel configuration parameter "Rank". */
+ if(ADC_IS_CHANNEL_INTERNAL(sConfig->Channel))
+ {
+ /* If Channel_16 is selected, enable Temp. sensor measurement path. */
+ /* If Channel_17 is selected, enable VREFINT measurement path. */
+ /* If Channel_18 is selected, enable VBAT measurement path. */
+ ADC->CCR |= ADC_CHANNEL_INTERNAL_PATH(sConfig->Channel);
+
+ /* If Temp. sensor is selected, wait for stabilization delay */
+ if (sConfig->Channel == ADC_CHANNEL_TEMPSENSOR)
+ {
+ /* Delay for temperature sensor stabilization time */
+ /* Compute number of CPU cycles to wait for */
+ wait_loop_index = (ADC_TEMPSENSOR_DELAY_US * (SystemCoreClock / 1000000));
+ while(wait_loop_index != 0)
+ {
+ wait_loop_index--;
+ }
+ }
+ }
+ }
+ else
+ {
+ /* Regular sequence configuration */
+ /* Reset the channel selection register from the selected channel */
+ hadc->Instance->CHSELR &= ~ADC_CHSELR_CHANNEL(sConfig->Channel);
+
+ /* Management of internal measurement channels: VrefInt/TempSensor/Vbat */
+ /* internal measurement paths disable: If internal channel selected, */
+ /* disable dedicated internal buffers and path. */
+ if(ADC_IS_CHANNEL_INTERNAL(sConfig->Channel))
+ {
+ /* If Channel_16 is selected, disable Temp. sensor measurement path. */
+ /* If Channel_17 is selected, disable VREFINT measurement path. */
+ /* If Channel_18 is selected, disable VBAT measurement path. */
+ ADC->CCR &= ~ADC_CHANNEL_INTERNAL_PATH(sConfig->Channel);
+ }
+ }
+
+ }
+
+ /* If a conversion is on going on regular group, no update on regular */
+ /* channel could be done on neither of the channel configuration structure */
+ /* parameters. */
+ else
+ {
+ /* Update ADC state machine to error */
+ SET_BIT(hadc->State, HAL_ADC_STATE_ERROR_CONFIG);
+
+ tmp_hal_status = HAL_ERROR;
+ }
+
+ /* Process unlocked */
+ __HAL_UNLOCK(hadc);
+
+ /* Return function status */
+ return tmp_hal_status;
+}
+
+
+/**
+ * @brief Configures the analog watchdog.
+ * @note Possibility to update parameters on the fly:
+ * This function initializes the selected analog watchdog, following
+ * calls to this function can be used to reconfigure some parameters
+ * of structure "ADC_AnalogWDGConfTypeDef" on the fly, without reseting
+ * the ADC.
+ * The setting of these parameters is conditioned to ADC state.
+ * For parameters constraints, see comments of structure
+ * "ADC_AnalogWDGConfTypeDef".
+ * @param hadc: ADC handle
+ * @param AnalogWDGConfig: Structure of ADC analog watchdog configuration
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_ADC_AnalogWDGConfig(ADC_HandleTypeDef* hadc, ADC_AnalogWDGConfTypeDef* AnalogWDGConfig)
+{
+ HAL_StatusTypeDef tmp_hal_status = HAL_OK;
+
+ 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_FUNCTIONAL_STATE(AnalogWDGConfig->ITMode));
+
+ /* Verify if threshold is within the selected ADC resolution */
+ assert_param(IS_ADC_RANGE(ADC_GET_RESOLUTION(hadc), AnalogWDGConfig->HighThreshold));
+ assert_param(IS_ADC_RANGE(ADC_GET_RESOLUTION(hadc), AnalogWDGConfig->LowThreshold));
+
+ if(AnalogWDGConfig->WatchdogMode == ADC_ANALOGWATCHDOG_SINGLE_REG)
+ {
+ assert_param(IS_ADC_CHANNEL(AnalogWDGConfig->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 on regular group: */
+ /* - Analog watchdog channels */
+ /* - Analog watchdog thresholds */
+ if (ADC_IS_CONVERSION_ONGOING_REGULAR(hadc) == RESET)
+ {
+ /* Configuration of analog watchdog: */
+ /* - Set the analog watchdog enable mode: one or overall group of */
+ /* channels. */
+ /* - Set the Analog watchdog channel (is not used if watchdog */
+ /* mode "all channels": ADC_CFGR_AWD1SGL=0). */
+ hadc->Instance->CFGR1 &= ~( ADC_CFGR1_AWDSGL |
+ ADC_CFGR1_AWDEN |
+ ADC_CFGR1_AWDCH );
+
+ hadc->Instance->CFGR1 |= ( AnalogWDGConfig->WatchdogMode |
+ ADC_CFGR_AWDCH(AnalogWDGConfig->Channel) );
+
+ /* 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);
+
+ /* Set the high and low thresholds */
+ hadc->Instance->TR &= ~(ADC_TR_HT | ADC_TR_LT);
+ hadc->Instance->TR |= ( ADC_TRX_HIGHTHRESHOLD (tmpAWDHighThresholdShifted) |
+ tmpAWDLowThresholdShifted );
+
+ /* Clear the ADC Analog watchdog flag (in case of left enabled by */
+ /* previous ADC operations) to be ready to use for HAL_ADC_IRQHandler() */
+ /* or HAL_ADC_PollForEvent(). */
+ __HAL_ADC_CLEAR_FLAG(hadc, ADC_IT_AWD);
+
+ /* 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);
+ }
+
+ }
+ /* If a conversion is on going on regular group, no update could be done */
+ /* on neither of the AWD configuration structure parameters. */
+ else
+ {
+ /* Update ADC state machine to error */
+ SET_BIT(hadc->State, HAL_ADC_STATE_ERROR_CONFIG);
+
+ tmp_hal_status = HAL_ERROR;
+ }
+
+
+ /* Process unlocked */
+ __HAL_UNLOCK(hadc);
+
+ /* Return function status */
+ return tmp_hal_status;
+}
+
+
+/**
+ * @}
+ */
+
+
+/** @defgroup ADC_Exported_Functions_Group4 Peripheral State functions
+ * @brief Peripheral State functions
+ *
+@verbatim
+ ===============================================================================
+ ##### Peripheral State and Errors functions #####
+ ===============================================================================
+ [..]
+ This subsection provides functions to get in run-time the status of the
+ peripheral.
+ (+) Check the ADC state
+ (+) Check the ADC error code
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Return the ADC state
+ * @note ADC state machine is managed by bitfields, ADC status must be
+ * compared with states bits.
+ * For example:
+ * " if (HAL_IS_BIT_SET(HAL_ADC_GetState(hadc1), HAL_ADC_STATE_REG_BUSY)) "
+ * " if (HAL_IS_BIT_SET(HAL_ADC_GetState(hadc1), HAL_ADC_STATE_AWD1) ) "
+ * @param hadc: ADC handle
+ * @retval HAL state
+ */
+uint32_t HAL_ADC_GetState(ADC_HandleTypeDef* hadc)
+{
+ /* Check the parameters */
+ assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance));
+
+ /* Return ADC state */
+ return hadc->State;
+}
+
+/**
+ * @brief Return the ADC error code
+ * @param hadc: ADC handle
+ * @retval ADC Error Code
+ */
+uint32_t HAL_ADC_GetError(ADC_HandleTypeDef *hadc)
+{
+ return hadc->ErrorCode;
+}
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/** @defgroup ADC_Private_Functions ADC Private Functions
+ * @{
+ */
+
+/**
+ * @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;
+ __IO uint32_t wait_loop_index = 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 */
+ SET_BIT(hadc->State, HAL_ADC_STATE_ERROR_INTERNAL);
+
+ /* Set ADC error code to ADC IP internal error */
+ SET_BIT(hadc->ErrorCode, HAL_ADC_ERROR_INTERNAL);
+
+ return HAL_ERROR;
+ }
+
+ /* Enable the ADC peripheral */
+ __HAL_ADC_ENABLE(hadc);
+
+ /* Delay for ADC stabilization time */
+ /* Compute number of CPU cycles to wait for */
+ wait_loop_index = (ADC_STAB_DELAY_US * (SystemCoreClock / 1000000));
+ while(wait_loop_index != 0)
+ {
+ wait_loop_index--;
+ }
+
+ /* Get tick count */
+ tickstart = HAL_GetTick();
+
+ /* Wait for ADC effectively enabled */
+ while(__HAL_ADC_GET_FLAG(hadc, ADC_FLAG_RDY) == RESET)
+ {
+ if((HAL_GetTick() - tickstart) > ADC_ENABLE_TIMEOUT)
+ {
+ /* Update ADC state machine to error */
+ SET_BIT(hadc->State, HAL_ADC_STATE_ERROR_INTERNAL);
+
+ /* Set ADC error code to ADC IP internal error */
+ SET_BIT(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.
+ * @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: */
+ /* Note: 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 */
+ SET_BIT(hadc->State, HAL_ADC_STATE_ERROR_INTERNAL);
+
+ /* Set ADC error code to ADC IP internal error */
+ SET_BIT(hadc->ErrorCode, HAL_ADC_ERROR_INTERNAL);
+
+ return HAL_ERROR;
+ }
+
+ /* Wait for ADC effectively disabled */
+ /* Get tick count */
+ tickstart = HAL_GetTick();
+
+ while(HAL_IS_BIT_SET(hadc->Instance->CR, ADC_CR_ADEN))
+ {
+ if((HAL_GetTick() - tickstart) > ADC_DISABLE_TIMEOUT)
+ {
+ /* Update ADC state machine to error */
+ SET_BIT(hadc->State, HAL_ADC_STATE_ERROR_INTERNAL);
+
+ /* Set ADC error code to ADC IP internal error */
+ SET_BIT(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
+ * @retval HAL status.
+ */
+static HAL_StatusTypeDef ADC_ConversionStop(ADC_HandleTypeDef* hadc)
+{
+ uint32_t tickstart = 0;
+
+ /* Check the parameters */
+ assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance));
+
+ /* Verification if ADC is not already stopped on regular group to bypass */
+ /* this function if not needed. */
+ if (ADC_IS_CONVERSION_ONGOING_REGULAR(hadc))
+ {
+
+ /* Stop potential conversion on going on 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 tick count */
+ tickstart = HAL_GetTick();
+
+ while((hadc->Instance->CR & ADC_CR_ADSTART) != RESET)
+ {
+ if((HAL_GetTick() - tickstart) > ADC_STOP_CONVERSION_TIMEOUT)
+ {
+ /* Update ADC state machine to error */
+ SET_BIT(hadc->State, HAL_ADC_STATE_ERROR_INTERNAL);
+
+ /* Set ADC error code to ADC IP internal error */
+ SET_BIT(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)
+{
+ /* Retrieve ADC handle corresponding to current DMA handle */
+ ADC_HandleTypeDef* hadc = ( ADC_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
+
+ /* Update state machine on conversion status if not in error state */
+ if (HAL_IS_BIT_CLR(hadc->State, HAL_ADC_STATE_ERROR_INTERNAL | HAL_ADC_STATE_ERROR_DMA))
+ {
+ /* Set ADC state */
+ SET_BIT(hadc->State, HAL_ADC_STATE_REG_EOC);
+
+ /* Determine whether any further conversion upcoming on group regular */
+ /* by external trigger, continuous mode or scan sequence on going. */
+ if(ADC_IS_SOFTWARE_START_REGULAR(hadc) &&
+ (hadc->Init.ContinuousConvMode == DISABLE) )
+ {
+ /* If End of Sequence is reached, disable interrupts */
+ if( __HAL_ADC_GET_FLAG(hadc, ADC_FLAG_EOS) )
+ {
+ /* Allowed to modify bits ADC_IT_EOC/ADC_IT_EOS only if bit */
+ /* ADSTART==0 (no conversion on going) */
+ if (ADC_IS_CONVERSION_ONGOING_REGULAR(hadc) == RESET)
+ {
+ /* Disable ADC end of single conversion interrupt on group regular */
+ /* Note: Overrun interrupt was enabled with EOC interrupt in */
+ /* HAL_Start_IT(), but is not disabled here because can be used */
+ /* by overrun IRQ process below. */
+ __HAL_ADC_DISABLE_IT(hadc, ADC_IT_EOC | ADC_IT_EOS);
+
+ /* Set ADC state */
+ ADC_STATE_CLR_SET(hadc->State,
+ HAL_ADC_STATE_REG_BUSY,
+ HAL_ADC_STATE_READY);
+ }
+ else
+ {
+ /* Change ADC state to error state */
+ SET_BIT(hadc->State, HAL_ADC_STATE_ERROR_CONFIG);
+
+ /* Set ADC error code to ADC IP internal error */
+ SET_BIT(hadc->ErrorCode, HAL_ADC_ERROR_INTERNAL);
+ }
+ }
+ }
+
+ /* Conversion complete callback */
+ HAL_ADC_ConvCpltCallback(hadc);
+ }
+ else
+ {
+ /* Call DMA error callback */
+ hadc->DMA_Handle->XferErrorCallback(hdma);
+ }
+
+}
+
+/**
+ * @brief DMA half transfer complete callback.
+ * @param hdma: pointer to DMA handle.
+ * @retval None
+ */
+static void ADC_DMAHalfConvCplt(DMA_HandleTypeDef *hdma)
+{
+ /* Retrieve ADC handle corresponding to current DMA handle */
+ ADC_HandleTypeDef* hadc = ( ADC_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
+
+ /* Half conversion callback */
+ HAL_ADC_ConvHalfCpltCallback(hadc);
+}
+
+/**
+ * @brief DMA error callback
+ * @param hdma: pointer to DMA handle.
+ * @retval None
+ */
+static void ADC_DMAError(DMA_HandleTypeDef *hdma)
+{
+ /* Retrieve ADC handle corresponding to current DMA handle */
+ ADC_HandleTypeDef* hadc = ( ADC_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
+
+ /* Set ADC state */
+ SET_BIT(hadc->State, HAL_ADC_STATE_ERROR_DMA);
+
+ /* Set ADC error code to DMA error */
+ SET_BIT(hadc->ErrorCode, HAL_ADC_ERROR_DMA);
+
+ /* Error callback */
+ HAL_ADC_ErrorCallback(hadc);
+}
+
+/**
+ * @}
+ */
+
+#endif /* HAL_ADC_MODULE_ENABLED */
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
