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/**
******************************************************************************
* @file stm32l4xx_hal_adc.c
* @author MCD Application Team
* @version V1.6.0
* @date 28-October-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
* "stm32l4xx_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 (channel wise)
(+) External trigger (timer or EXTI) with configurable polarity
(+) DMA request generation for transfer of conversions data of regular group.
(+) Configurable delay between conversions in Dual interleaved mode.
(+) ADC channels selectable single/differential input.
(+) ADC offset on regular groups.
(+) ADC calibration
(+) ADC conversion of regular group.
(+) ADC supply requirements: 1.62 V to 3.6 V.
(+) 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.
(++) 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 system clock, PLLSAI1 or the PLLSAI2
running up to 80MHz.
(+++) Example:
Into HAL_ADC_MspInit() (recommended code location) or with
other device clock parameters configuration:
(+++) __HAL_RCC_ADC_CLK_ENABLE(); (mandatory)
RCC_ADCCLKSOURCE_PLLSAI2 enable: (optional: if asynchronous clock selected)
(+++) RCC_PeriphClkInitTypeDef RCC_PeriphClkInit;
(+++) PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_ADC;
(+++) PeriphClkInit.AdcClockSelection = RCC_ADCCLKSOURCE_PLLSAI2;
(+++) HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit);
(++) 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>&copy; 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 "stm32l4xx_hal.h"
/** @addtogroup STM32L4xx_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
* @{
*/
#define ADC_CFGR_FIELDS_1 ((uint32_t)(ADC_CFGR_RES | ADC_CFGR_ALIGN |\
ADC_CFGR_CONT | ADC_CFGR_OVRMOD |\
ADC_CFGR_DISCEN | ADC_CFGR_DISCNUM |\
ADC_CFGR_EXTEN | ADC_CFGR_EXTSEL)) /*!< ADC_CFGR fields of parameters that can be updated
when no regular conversion is on-going */
#define ADC_CFGR2_FIELDS ((uint32_t)(ADC_CFGR2_ROVSE | ADC_CFGR2_OVSR |\
ADC_CFGR2_OVSS | ADC_CFGR2_TROVS |\
ADC_CFGR2_ROVSM)) /*!< ADC_CFGR2 fields of parameters that can be updated when no conversion
(neither regular nor injected) is on-going */
#define ADC_CFGR_WD_FIELDS ((uint32_t)(ADC_CFGR_AWD1SGL | ADC_CFGR_JAWD1EN | \
ADC_CFGR_AWD1EN | ADC_CFGR_AWD1CH)) /*!< ADC_CFGR fields of Analog Watchdog parameters that can be updated when no
conversion (neither regular nor injected) is on-going */
#define ADC_OFR_FIELDS ((uint32_t)(ADC_OFR1_OFFSET1 | ADC_OFR1_OFFSET1_CH | ADC_OFR1_OFFSET1_EN)) /*!< ADC_OFR fields of parameters that can be updated when no conversion
(neither regular nor injected) is on-going */
/* Delay to wait before setting ADEN once ADCAL has been reset
must be at least 4 ADC clock cycles.
Assuming lowest ADC clock (140 KHz according to DS), this
4 ADC clock cycles duration is equal to
4 / 140,000 = 0.028 ms.
ADC_ENABLE_TIMEOUT set to 2 is a margin large enough to ensure
the 4 ADC clock cycles have elapsed while waiting for ADRDY
to become 1 */
#define ADC_ENABLE_TIMEOUT ((uint32_t) 2) /*!< ADC enable time-out value */
#define ADC_DISABLE_TIMEOUT ((uint32_t) 2) /*!< ADC disable time-out value */
/* Delay for ADC voltage regulator startup time */
/* Maximum delay is 10 microseconds */
/* (refer device RM, parameter Tadcvreg_stup). */
#define ADC_STAB_DELAY_US ((uint32_t) 10) /*!< ADC voltage regulator startup time */
/* Timeout to wait for current conversion on going to be completed. */
/* Timeout fixed to worst case, for 1 channel. */
/* - maximum sampling time (640.5 adc_clk) */
/* - ADC resolution (Tsar 12 bits= 12.5 adc_clk) */
/* - ADC clock with prescaler 256 */
/* 653 * 256 = 167168 clock cycles max */
/* Unit: cycles of CPU clock. */
#define ADC_CONVERSION_TIME_MAX_CPU_CYCLES ((uint32_t) 167168) /*!< ADC conversion completion time-out value */
/**
* @}
*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/* Exported functions --------------------------------------------------------*/
/** @defgroup ADC_Exported_Functions ADC Exported Functions
* @{
*/
/** @defgroup ADC_Exported_Functions_Group1 Initialization and de-initialization functions
* @brief ADC 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 Initialize 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 possible clock sources: System/PLLSAI1/PLLSAI2 clocks
* or AHB clock.
* @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".
* @note Parameters related to common ADC registers (ADC clock mode) are set
* only if all ADCs are disabled.
* If this is not the case, these common parameters setting are
* bypassed without error reporting: it can be the intended behaviour in
* case of update of a parameter of ADC_InitTypeDef on the fly,
* without disabling the other ADCs.
* @param hadc: ADC handle
* @retval HAL status
*/
HAL_StatusTypeDef HAL_ADC_Init(ADC_HandleTypeDef* hadc)
{
HAL_StatusTypeDef tmp_hal_status = HAL_OK;
ADC_Common_TypeDef *tmpADC_Common;
uint32_t tmpCFGR = 0;
__IO uint32_t wait_loop_index = 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_DFSDMCFG_MODE(hadc));
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_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.OversamplingMode));
if(hadc->Init.ScanConvMode != ADC_SCAN_DISABLE)
{
assert_param(IS_ADC_REGULAR_NB_CONV(hadc->Init.NbrOfConversion));
assert_param(IS_FUNCTIONAL_STATE(hadc->Init.DiscontinuousConvMode));
if (hadc->Init.DiscontinuousConvMode == ENABLE)
{
assert_param(IS_ADC_REGULAR_DISCONT_NUMBER(hadc->Init.NbrOfDiscConversion));
}
}
/* DISCEN and CONT bits cannot be set at the same time */
assert_param(!((hadc->Init.DiscontinuousConvMode == ENABLE) && (hadc->Init.ContinuousConvMode == ENABLE)));
/* Actions performed only if ADC is coming from state reset: */
/* - Initialization of ADC MSP */
if (hadc->State == HAL_ADC_STATE_RESET)
{
/* Init the low level hardware */
HAL_ADC_MspInit(hadc);
/* Set ADC error code to none */
ADC_CLEAR_ERRORCODE(hadc);
/* Initialize Lock */
hadc->Lock = HAL_UNLOCKED;
}
/* - Exit from deep-power-down mode and ADC voltage regulator enable */
/* Exit deep power down mode if still in that state */
if (HAL_IS_BIT_SET(hadc->Instance->CR, ADC_CR_DEEPPWD))
{
/* Exit deep power down mode */
CLEAR_BIT(hadc->Instance->CR, ADC_CR_DEEPPWD);
/* System was in deep power down mode, calibration must
be relaunched or a previously saved calibration factor
re-applied once the ADC voltage regulator is enabled */
}
if (HAL_IS_BIT_CLR(hadc->Instance->CR, ADC_CR_ADVREGEN))
{
/* Enable ADC internal voltage regulator */
SET_BIT(hadc->Instance->CR, ADC_CR_ADVREGEN);
/* Delay for ADC stabilization time */
/* Wait loop initialization and execution */
/* Note: Variable divided by 2 to compensate partially */
/* CPU processing cycles. */
wait_loop_index = (ADC_STAB_DELAY_US * (SystemCoreClock / (1000000 * 2)));
while(wait_loop_index != 0)
{
wait_loop_index--;
}
}
/* Verification that ADC voltage regulator is correctly enabled, whether */
/* or not ADC is coming from state reset (if any potential problem of */
/* clocking, voltage regulator would not be enabled). */
if (HAL_IS_BIT_CLR(hadc->Instance->CR, ADC_CR_ADVREGEN))
{
/* 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);
tmp_hal_status = HAL_ERROR;
}
/* Configuration of ADC parameters if previous preliminary actions are */
/* correctly completed and if there is no conversion on going on regular */
/* group (ADC may already be enabled at this point if HAL_ADC_Init() is */
/* called to update a parameter on the fly). */
if (HAL_IS_BIT_CLR(hadc->State, HAL_ADC_STATE_ERROR_INTERNAL) &&
(ADC_IS_CONVERSION_ONGOING_REGULAR(hadc) == RESET) )
{
/* Initialize the ADC state */
SET_BIT(hadc->State, HAL_ADC_STATE_BUSY_INTERNAL);
/* Configuration of common ADC parameters */
/* Pointer to the common control register */
tmpADC_Common = ADC_COMMON_REGISTER(hadc);
/* Parameters update conditioned to ADC state: */
/* Parameters that can be updated only when ADC is disabled: */
/* - clock configuration */
if ((ADC_IS_ENABLE(hadc) == RESET) &&
(ADC_ANY_OTHER_ENABLED(hadc) == RESET) )
{
/* Reset configuration of ADC common register CCR: */
/* */
/* - ADC clock mode and ACC prescaler (CKMODE and PRESC bits)are set */
/* according to adc->Init.ClockPrescaler. It selects the clock */
/* source and sets the clock division factor. */
/* */
/* 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): */
/* - when multimode feature is available, multimode-related */
/* parameters: MDMA, DMACFG, DELAY, DUAL (set by API */
/* HAL_ADCEx_MultiModeConfigChannel() ) */
/* - internal measurement paths: Vbat, temperature sensor, Vref */
/* (set into HAL_ADC_ConfigChannel() or */
/* HAL_ADCEx_InjectedConfigChannel() ) */
MODIFY_REG(tmpADC_Common->CCR, ADC_CCR_PRESC|ADC_CCR_CKMODE, hadc->Init.ClockPrescaler);
}
/* Configuration of ADC: */
/* - resolution Init.Resolution */
/* - data alignment Init.DataAlign */
/* - external trigger to start conversion Init.ExternalTrigConv */
/* - external trigger polarity Init.ExternalTrigConvEdge */
/* - continuous conversion mode Init.ContinuousConvMode */
/* - overrun Init.Overrun */
/* - discontinuous mode Init.DiscontinuousConvMode */
/* - discontinuous mode channel count Init.NbrOfDiscConversion */
tmpCFGR = (ADC_CFGR_CONTINUOUS(hadc->Init.ContinuousConvMode) |
hadc->Init.Overrun |
hadc->Init.DataAlign |
hadc->Init.Resolution |
ADC_CFGR_REG_DISCONTINUOUS(hadc->Init.DiscontinuousConvMode) );
if (hadc->Init.DiscontinuousConvMode == ENABLE)
{
tmpCFGR |= ADC_CFGR_DISCONTINUOUS_NUM(hadc->Init.NbrOfDiscConversion);
}
/* Enable external trigger if trigger selection is different of software */
/* start. */
/* - external trigger to start conversion Init.ExternalTrigConv */
/* - external trigger polarity Init.ExternalTrigConvEdge */
/* Note: parameter ExternalTrigConvEdge set to "trigger edge none" is */
/* equivalent to software start. */
if ((hadc->Init.ExternalTrigConv != ADC_SOFTWARE_START)
&& (hadc->Init.ExternalTrigConvEdge != ADC_EXTERNALTRIGCONVEDGE_NONE))
{
tmpCFGR |= ( hadc->Init.ExternalTrigConv | hadc->Init.ExternalTrigConvEdge);
}
/* Update Configuration Register CFGR */
MODIFY_REG(hadc->Instance->CFGR, ADC_CFGR_FIELDS_1, tmpCFGR);
/* Parameters update conditioned to ADC state: */
/* Parameters that can be updated when ADC is disabled or enabled without */
/* conversion on going on regular and injected groups: */
/* - DMA continuous request Init.DMAContinuousRequests */
/* - LowPowerAutoWait feature Init.LowPowerAutoWait */
/* - Oversampling parameters Init.Oversampling */
if (ADC_IS_CONVERSION_ONGOING_REGULAR_INJECTED(hadc) == RESET)
{
tmpCFGR = ( ADC_CFGR_DFSDM(hadc) |
ADC_CFGR_AUTOWAIT(hadc->Init.LowPowerAutoWait) |
ADC_CFGR_DMACONTREQ(hadc->Init.DMAContinuousRequests) );
MODIFY_REG(hadc->Instance->CFGR, ADC_CFGR_FIELDS_2, tmpCFGR);
if (hadc->Init.OversamplingMode == ENABLE)
{
assert_param(IS_ADC_OVERSAMPLING_RATIO(hadc->Init.Oversampling.Ratio));
assert_param(IS_ADC_RIGHT_BIT_SHIFT(hadc->Init.Oversampling.RightBitShift));
assert_param(IS_ADC_TRIGGERED_OVERSAMPLING_MODE(hadc->Init.Oversampling.TriggeredMode));
assert_param(IS_ADC_REGOVERSAMPLING_MODE(hadc->Init.Oversampling.OversamplingStopReset));
if ((hadc->Init.ExternalTrigConv == ADC_SOFTWARE_START)
|| (hadc->Init.ExternalTrigConvEdge == ADC_EXTERNALTRIGCONVEDGE_NONE))
{
/* Multi trigger is not applicable to software-triggered conversions */
assert_param((hadc->Init.Oversampling.TriggeredMode == ADC_TRIGGEREDMODE_SINGLE_TRIGGER));
}
/* Configuration of Oversampler: */
/* - Oversampling Ratio */
/* - Right bit shift */
/* - Triggered mode */
/* - Oversampling mode (continued/resumed) */
MODIFY_REG(hadc->Instance->CFGR2, ADC_CFGR2_FIELDS,
ADC_CFGR2_ROVSE |
hadc->Init.Oversampling.Ratio |
hadc->Init.Oversampling.RightBitShift |
hadc->Init.Oversampling.TriggeredMode |
hadc->Init.Oversampling.OversamplingStopReset);
}
else
{
/* Disable Regular OverSampling */
CLEAR_BIT( hadc->Instance->CFGR2, ADC_CFGR2_ROVSE);
}
} /* if (ADC_IS_CONVERSION_ONGOING_REGULAR_INJECTED(hadc) == RESET) */
/* Configuration of regular group sequencer: */
/* - if scan mode is disabled, regular channels sequence length is set to */
/* 0x00: 1 channel converted (channel on regular rank 1) */
/* Parameter "NbrOfConversion" is discarded. */
/* Note: Scan mode is not present by hardware on this device, but */
/* emulated by software for alignment over all STM32 devices. */
/* - if scan mode is enabled, regular channels sequence length is set to */
/* parameter "NbrOfConversion" */
if (hadc->Init.ScanConvMode == ADC_SCAN_ENABLE)
{
/* Set number of ranks in regular group sequencer */
MODIFY_REG(hadc->Instance->SQR1, ADC_SQR1_L, (hadc->Init.NbrOfConversion - (uint8_t)1));
}
else
{
CLEAR_BIT(hadc->Instance->SQR1, ADC_SQR1_L);
}
/* Initialize the ADC state */
/* Clear HAL_ADC_STATE_BUSY_INTERNAL bit, set HAL_ADC_STATE_READY bit */
ADC_STATE_CLR_SET(hadc->State, HAL_ADC_STATE_BUSY_INTERNAL, HAL_ADC_STATE_READY);
}
else
{
/* Update ADC state machine to error */
SET_BIT(hadc->State, HAL_ADC_STATE_ERROR_INTERNAL);
tmp_hal_status = HAL_ERROR;
} /* if (HAL_IS_BIT_CLR(hadc->State, HAL_ADC_STATE_ERROR_INTERNAL) && (ADC_IS_CONVERSION_ONGOING_REGULAR(hadc) == RESET) ) */
/* 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 Keep in mind that all ADCs use the same clock: disabling
* the clock will reset all ADCs.
* @note By default, HAL_ADC_DeInit() sets DEEPPWD: this saves more power by
* reducing the leakage currents and is particularly interesting before
* entering STOP 1 or STOP 2 modes.
* @param hadc: ADC handle
* @retval HAL status
*/
HAL_StatusTypeDef HAL_ADC_DeInit(ADC_HandleTypeDef* hadc)
{
/* 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 and injected groups */
/* Note: No check on ADC_ConversionStop() return status, */
/* if the conversion stop failed, it is up to */
/* HAL_ADC_MspDeInit() to reset the ADC IP. */
ADC_ConversionStop(hadc, ADC_REGULAR_INJECTED_GROUP);
/* Disable ADC peripheral if conversions are effectively stopped */
/* Flush register JSQR: reset the queue sequencer when injected */
/* queue sequencer is enabled and ADC disabled. */
/* The software and hardware triggers of the injected sequence are both */
/* internally disabled just after the completion of the last valid */
/* injected sequence. */
SET_BIT(hadc->Instance->CFGR, ADC_CFGR_JQM);
/* Disable the ADC peripheral */
/* No check on ADC_Disable() return status, if the ADC disabling process
failed, it is up to HAL_ADC_MspDeInit() to reset the ADC IP */
ADC_Disable(hadc);
/* ========== Reset ADC registers ========== */
/* Reset register IER */
__HAL_ADC_DISABLE_IT(hadc, (ADC_IT_AWD3 | ADC_IT_AWD2 | ADC_IT_AWD1 |
ADC_IT_JQOVF | ADC_IT_OVR |
ADC_IT_JEOS | ADC_IT_JEOC |
ADC_IT_EOS | ADC_IT_EOC |
ADC_IT_EOSMP | ADC_IT_RDY ) );
/* Reset register ISR */
__HAL_ADC_CLEAR_FLAG(hadc, (ADC_FLAG_AWD3 | ADC_FLAG_AWD2 | ADC_FLAG_AWD1 |
ADC_FLAG_JQOVF | ADC_FLAG_OVR |
ADC_FLAG_JEOS | ADC_FLAG_JEOC |
ADC_FLAG_EOS | ADC_FLAG_EOC |
ADC_FLAG_EOSMP | ADC_FLAG_RDY ) );
/* Reset register CR */
/* Bits ADC_CR_JADSTP, ADC_CR_ADSTP, ADC_CR_JADSTART, ADC_CR_ADSTART,
ADC_CR_ADCAL, ADC_CR_ADDIS and ADC_CR_ADEN are in access mode "read-set":
no direct reset applicable.
Update CR register to reset value where doable by software */
CLEAR_BIT(hadc->Instance->CR, ADC_CR_ADVREGEN | ADC_CR_ADCALDIF);
SET_BIT(hadc->Instance->CR, ADC_CR_DEEPPWD);
/* Reset register CFGR */
CLEAR_BIT(hadc->Instance->CFGR, ADC_CFGR_FIELDS);
SET_BIT(hadc->Instance->CFGR, ADC_CFGR_JQDIS);
/* Reset register CFGR2 */
CLEAR_BIT(hadc->Instance->CFGR2, ADC_CFGR2_ROVSM | ADC_CFGR2_TROVS | ADC_CFGR2_OVSS |
ADC_CFGR2_OVSR | ADC_CFGR2_JOVSE | ADC_CFGR2_ROVSE );
/* Reset register SMPR1 */
CLEAR_BIT(hadc->Instance->SMPR1, ADC_SMPR1_FIELDS);
/* Reset register SMPR2 */
CLEAR_BIT(hadc->Instance->SMPR2, ADC_SMPR2_SMP18 | ADC_SMPR2_SMP17 | ADC_SMPR2_SMP16 |
ADC_SMPR2_SMP15 | ADC_SMPR2_SMP14 | ADC_SMPR2_SMP13 |
ADC_SMPR2_SMP12 | ADC_SMPR2_SMP11 | ADC_SMPR2_SMP10 );
/* Reset register TR1 */
CLEAR_BIT(hadc->Instance->TR1, ADC_TR1_HT1 | ADC_TR1_LT1);
/* Reset register TR2 */
CLEAR_BIT(hadc->Instance->TR2, ADC_TR2_HT2 | ADC_TR2_LT2);
/* Reset register TR3 */
CLEAR_BIT(hadc->Instance->TR3, ADC_TR3_HT3 | ADC_TR3_LT3);
/* Reset register SQR1 */
CLEAR_BIT(hadc->Instance->SQR1, ADC_SQR1_SQ4 | ADC_SQR1_SQ3 | ADC_SQR1_SQ2 |
ADC_SQR1_SQ1 | ADC_SQR1_L);
/* Reset register SQR2 */
CLEAR_BIT(hadc->Instance->SQR2, ADC_SQR2_SQ9 | ADC_SQR2_SQ8 | ADC_SQR2_SQ7 |
ADC_SQR2_SQ6 | ADC_SQR2_SQ5);
/* Reset register SQR3 */
CLEAR_BIT(hadc->Instance->SQR3, ADC_SQR3_SQ14 | ADC_SQR3_SQ13 | ADC_SQR3_SQ12 |
ADC_SQR3_SQ11 | ADC_SQR3_SQ10);
/* Reset register SQR4 */
CLEAR_BIT(hadc->Instance->SQR4, ADC_SQR4_SQ16 | ADC_SQR4_SQ15);
/* Register JSQR was reset when the ADC was disabled */
/* Reset register DR */
/* bits in access mode read only, no direct reset applicable*/
/* Reset register OFR1 */
CLEAR_BIT(hadc->Instance->OFR1, ADC_OFR1_OFFSET1_EN | ADC_OFR1_OFFSET1_CH | ADC_OFR1_OFFSET1);
/* Reset register OFR2 */
CLEAR_BIT(hadc->Instance->OFR2, ADC_OFR2_OFFSET2_EN | ADC_OFR2_OFFSET2_CH | ADC_OFR2_OFFSET2);
/* Reset register OFR3 */
CLEAR_BIT(hadc->Instance->OFR3, ADC_OFR3_OFFSET3_EN | ADC_OFR3_OFFSET3_CH | ADC_OFR3_OFFSET3);
/* Reset register OFR4 */
CLEAR_BIT(hadc->Instance->OFR4, ADC_OFR4_OFFSET4_EN | ADC_OFR4_OFFSET4_CH | ADC_OFR4_OFFSET4);
/* Reset registers JDR1, JDR2, JDR3, JDR4 */
/* bits in access mode read only, no direct reset applicable*/
/* Reset register AWD2CR */
CLEAR_BIT(hadc->Instance->AWD2CR, ADC_AWD2CR_AWD2CH);
/* Reset register AWD3CR */
CLEAR_BIT(hadc->Instance->AWD3CR, ADC_AWD3CR_AWD3CH);
/* Reset register DIFSEL */
CLEAR_BIT(hadc->Instance->DIFSEL, ADC_DIFSEL_DIFSEL);
/* Reset register CALFACT */
CLEAR_BIT(hadc->Instance->CALFACT, ADC_CALFACT_CALFACT_D | ADC_CALFACT_CALFACT_S);
/* ========== Reset common ADC registers ========== */
/* Software is allowed to change common parameters only when all the other
ADCs are disabled. */
if ((ADC_IS_ENABLE(hadc) == RESET) &&
(ADC_ANY_OTHER_ENABLED(hadc) == RESET) )
{
/* Reset configuration of ADC common register CCR:
- clock mode: CKMODE, PRESCEN
- multimode related parameters (when this feature is available): MDMA,
DMACFG, DELAY, DUAL (set by HAL_ADCEx_MultiModeConfigChannel() API)
- internal measurement paths: Vbat, temperature sensor, Vref (set into
HAL_ADC_ConfigChannel() or HAL_ADCEx_InjectedConfigChannel() )
*/
ADC_CLEAR_COMMON_CONTROL_REGISTER(hadc);
}
/* DeInit the low level hardware.
For example:
__HAL_RCC_ADC_FORCE_RESET();
__HAL_RCC_ADC_RELEASE_RESET();
__HAL_RCC_ADC_CLK_DISABLE();
Keep in mind that all ADCs use the same clock: disabling
the clock will reset all ADCs.
*/
HAL_ADC_MspDeInit(hadc);
/* Set ADC error code to none */
ADC_CLEAR_ERRORCODE(hadc);
/* Reset injected channel configuration parameters */
hadc->InjectionConfig.ContextQueue = 0;
hadc->InjectionConfig.ChannelCount = 0;
/* Set ADC state */
hadc->State = HAL_ADC_STATE_RESET;
/* Process unlocked */
__HAL_UNLOCK(hadc);
/* Return function status */
return HAL_OK;
}
/**
* @brief Initialize 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 DeInitialize the ADC MSP.
* @param hadc: ADC handle
* @note All ADCs use the same clock: disabling the clock will reset all ADCs.
* @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 ADC Input and Output operation functions
* @brief ADC 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 Enable ADC, start conversion of regular group.
* @note Interruptions enabled in this function: None.
* @note Case of multimode enabled (when multimode feature is available):
* if ADC is Slave, ADC is enabled but conversion is not started,
* if ADC is master, ADC is enabled and multimode conversion is started.
* @param hadc: ADC handle
* @retval HAL status
*/
HAL_StatusTypeDef HAL_ADC_Start(ADC_HandleTypeDef* hadc)
{
HAL_StatusTypeDef tmp_hal_status = HAL_OK;
ADC_TypeDef *tmpADC_Master;
/* 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 */
tmp_hal_status = ADC_Enable(hadc);
/* Start conversion if ADC is effectively enabled */
if (tmp_hal_status == HAL_OK)
{
/* State machine update: Check if an injected conversion is ongoing */
if (HAL_IS_BIT_SET(hadc->State, HAL_ADC_STATE_INJ_BUSY))
{
/* Reset ADC error code fields related to regular conversions only */
CLEAR_BIT(hadc->ErrorCode, (HAL_ADC_ERROR_OVR|HAL_ADC_ERROR_DMA));
}
else
{
/* Set ADC error code to none */
ADC_CLEAR_ERRORCODE(hadc);
}
/* Clear HAL_ADC_STATE_READY and regular conversion results bits, set HAL_ADC_STATE_REG_BUSY bit */
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 HAL_ADC_STATE_MULTIMODE_SLAVE bit
- by default if ADC is Master or Independent or if multimode feature is not available
- if multimode setting is set to independent mode (no dual regular or injected conversions are configured) */
if (ADC_NONMULTIMODE_OR_MULTIMODEMASTER(hadc))
{
CLEAR_BIT(hadc->State, HAL_ADC_STATE_MULTIMODE_SLAVE);
}
/* 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. */
/* Case of multimode enabled (when multimode feature is available): */
/* - if ADC is slave and dual regular conversions are enabled, ADC is */
/* enabled only (conversion is not started), */
/* - if ADC is master, ADC is enabled and conversion is started. */
if (ADC_INDEPENDENT_OR_NONMULTIMODEREGULAR_SLAVE(hadc))
{
/* Multimode feature is not available or ADC Instance is Independent or Master,
or is not Slave ADC with dual regular conversions enabled.
Then, set HAL_ADC_STATE_INJ_BUSY bit and reset HAL_ADC_STATE_INJ_EOC bit if JAUTO is set. */
if (READ_BIT(hadc->Instance->CFGR, ADC_CFGR_JAUTO) != RESET)
{
ADC_STATE_CLR_SET(hadc->State, HAL_ADC_STATE_INJ_EOC, HAL_ADC_STATE_INJ_BUSY);
}
/* Process unlocked */
__HAL_UNLOCK(hadc);
/* Start ADC */
SET_BIT(hadc->Instance->CR, ADC_CR_ADSTART);
}
else
{
SET_BIT(hadc->State, HAL_ADC_STATE_MULTIMODE_SLAVE);
/* if Master ADC JAUTO bit is set, update Slave State in setting
HAL_ADC_STATE_INJ_BUSY bit and in resetting HAL_ADC_STATE_INJ_EOC bit */
tmpADC_Master = ADC_MASTER_REGISTER(hadc);
if (READ_BIT(tmpADC_Master->CFGR, ADC_CFGR_JAUTO) != RESET)
{
ADC_STATE_CLR_SET(hadc->State, HAL_ADC_STATE_INJ_EOC, HAL_ADC_STATE_INJ_BUSY);
} /* if (READ_BIT(tmpADC_Master->CFGR, ADC_CFGR_JAUTO) != RESET) */
/* Process unlocked */
__HAL_UNLOCK(hadc);
} /* if (ADC_INDEPENDENT_OR_NONMULTIMODEREGULAR_SLAVE(hadc)) */
}
else
{
/* Process unlocked */
__HAL_UNLOCK(hadc);
}
}
else
{
tmp_hal_status = HAL_BUSY;
}
/* Return function status */
return tmp_hal_status;
}
/**
* @brief Stop ADC conversion of regular group (and injected channels in
* case of auto_injection mode), disable ADC peripheral.
* @note: ADC peripheral disable is forcing stop of potential
* conversion on injected group. If injected group is under use, it
* should be preliminarily stopped using HAL_ADCEx_InjectedStop function.
* @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 ADC groups regular and injected */
tmp_hal_status = ADC_ConversionStop(hadc, ADC_REGULAR_INJECTED_GROUP);
/* 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 */
/* Clear HAL_ADC_STATE_REG_BUSY and HAL_ADC_STATE_INJ_BUSY bits, set HAL_ADC_STATE_READY bit */
ADC_STATE_CLR_SET(hadc->State, (HAL_ADC_STATE_REG_BUSY|HAL_ADC_STATE_INJ_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.
* @param hadc: ADC handle
* @param Timeout: Timeout value in millisecond.
* @note Depending on hadc->Init.EOCSelection, EOS or EOC is
* checked and cleared depending on AUTDLY bit status.
* @note HAL_ADC_PollForConversion() returns HAL_ERROR if EOC is polled in a
* DMA-managed conversions configuration: indeed, EOC is immediately
* reset by the DMA reading the DR register when the converted data is
* available. Therefore, EOC is set for a too short period to be
* reliably polled.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_ADC_PollForConversion(ADC_HandleTypeDef* hadc, uint32_t Timeout)
{
uint32_t tickstart = 0;
uint32_t tmp_Flag_EOC = 0x00;
uint32_t tmp_cfgr = 0x00;
uint32_t tmp_eos_raised = 0x01; /* by default, assume that EOS is set,
tmp_eos_raised will be corrected
accordingly during API execution */
ADC_TypeDef *tmpADC_Master;
/* Check the parameters */
assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance));
/* If end of conversion selected to end of sequence conversions */
if (hadc->Init.EOCSelection == ADC_EOC_SEQ_CONV)
{
tmp_Flag_EOC = ADC_FLAG_EOS;
}
/* If end of conversion selected to end of unitary conversion */
else /* ADC_EOC_SINGLE_CONV */
{
/* Check that the ADC is not in a DMA-based configuration. Otherwise,
returns an error. */
/* Check whether dual regular conversions are disabled or unavailable. */
if (ADC_IS_DUAL_REGULAR_CONVERSION_ENABLE(hadc) == RESET)
{
/* Check DMAEN bit in handle ADC CFGR register */
if (READ_BIT(hadc->Instance->CFGR, ADC_CFGR_DMAEN) != RESET)
{
SET_BIT(hadc->State, HAL_ADC_STATE_ERROR_CONFIG);
return HAL_ERROR;
}
}
else
{
/* Else need to check Common register CCR MDMA bit field. */
if (ADC_MULTIMODE_DMA_ENABLED())
{
SET_BIT(hadc->State, HAL_ADC_STATE_ERROR_CONFIG);
return HAL_ERROR;
}
}
/* no DMA transfer detected, polling ADC_FLAG_EOC is possible */
tmp_Flag_EOC = ADC_FLAG_EOC;
}
/* Get tick count */
tickstart = HAL_GetTick();
/* Wait until End of unitary conversion or sequence conversions 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;
}
}
}
/* Next, to clear the polled flag as well as to update the handle State,
EOS is checked and the relevant configuration register is retrieved. */
/* 1. Check whether or not EOS is set */
if (HAL_IS_BIT_CLR(hadc->Instance->ISR, ADC_FLAG_EOS))
{
tmp_eos_raised = 0;
}
/* 2. Check whether or not hadc is the handle of a Slave ADC with dual
regular conversions enabled. */
if (ADC_INDEPENDENT_OR_NONMULTIMODEREGULAR_SLAVE(hadc))
{
/* Retrieve handle ADC CFGR register */
tmp_cfgr = READ_REG(hadc->Instance->CFGR);
}
else
{
/* Retrieve Master ADC CFGR register */
tmpADC_Master = ADC_MASTER_REGISTER(hadc);
tmp_cfgr = READ_REG(tmpADC_Master->CFGR);
}
/* Clear polled flag */
if (tmp_Flag_EOC == ADC_FLAG_EOS)
{
__HAL_ADC_CLEAR_FLAG(hadc, ADC_FLAG_EOS);
}
else
{
/* Clear end of conversion EOC 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(). */
/* For regular groups, no new conversion will start before EOC is cleared.*/
/* Note that 1. reading DR clears EOC. */
/* 2. in multimode with dual regular conversions enabled (when */
/* multimode feature is available), Master AUTDLY bit is */
/* checked. */
if (READ_BIT (tmp_cfgr, ADC_CFGR_AUTDLY) == RESET)
{
__HAL_ADC_CLEAR_FLAG(hadc, ADC_FLAG_EOC);
}
}
/* Update ADC state machine */
SET_BIT(hadc->State, HAL_ADC_STATE_REG_EOC);
/* If 1. EOS is set
2. conversions are software-triggered
3. CONT bit is reset (that of handle ADC or Master ADC if applicable)
Then regular conversions are over and HAL_ADC_STATE_REG_BUSY can be reset.
4. additionally, if no injected conversions are on-going, HAL_ADC_STATE_READY
can be set */
if ((tmp_eos_raised)
&& (ADC_IS_SOFTWARE_START_REGULAR(hadc))
&& (READ_BIT (tmp_cfgr, ADC_CFGR_CONT) == RESET))
{
CLEAR_BIT(hadc->State, HAL_ADC_STATE_REG_BUSY);
/* If no injected conversion on-going, set HAL_ADC_STATE_READY bit */
if (HAL_IS_BIT_CLR(hadc->State, HAL_ADC_STATE_INJ_BUSY))
{
SET_BIT(hadc->State, HAL_ADC_STATE_READY);
}
}
/* Return function status */
return HAL_OK;
}
/**
* @brief Poll for ADC event.
* @param hadc: ADC handle
* @param EventType: the ADC event type.
* This parameter can be one of the following values:
* @arg @ref ADC_EOSMP_EVENT ADC End of Sampling event
* @arg @ref ADC_AWD1_EVENT ADC Analog watchdog 1 event (main analog watchdog, present on all STM32 devices)
* @arg @ref ADC_AWD2_EVENT ADC Analog watchdog 2 event (additional analog watchdog, not present on all STM32 families)
* @arg @ref ADC_AWD3_EVENT ADC Analog watchdog 3 event (additional analog watchdog, not present on all STM32 families)
* @arg @ref ADC_OVR_EVENT ADC Overrun event
* @arg @ref ADC_JQOVF_EVENT ADC Injected context queue overflow event
* @param Timeout: Timeout value in millisecond.
* @note The relevant flag is cleared if found to be set, except for ADC_FLAG_OVR.
* Indeed, the latter is reset only if hadc->Init.Overrun field is set
* to ADC_OVR_DATA_OVERWRITTEN. Otherwise, data register may be potentially overwritten
* by a new converted data as soon as OVR is cleared.
* To reset OVR flag once the preserved data is retrieved, the user can resort
* to macro __HAL_ADC_CLEAR_FLAG(hadc, ADC_FLAG_OVR);
* @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)
{
/* End Of Sampling event */
case ADC_EOSMP_EVENT:
/* Set ADC state */
SET_BIT(hadc->State, HAL_ADC_STATE_REG_EOSMP);
/* Clear the End Of Sampling flag */
__HAL_ADC_CLEAR_FLAG(hadc, ADC_FLAG_EOSMP);
break;
/* Analog watchdog (level out of window) event */
/* Note: In case of several analog watchdog enabled, if needed to know */
/* which one triggered and on which ADCx, test ADC state of Analog Watchdog */
/* flags HAL_ADC_STATE_AWD/2/3 function. */
/* For example: "if (HAL_ADC_GetState(hadc1) == HAL_ADC_STATE_AWD) " */
/* "if (HAL_ADC_GetState(hadc1) == HAL_ADC_STATE_AWD2)" */
/* "if (HAL_ADC_GetState(hadc1) == HAL_ADC_STATE_AWD3)" */
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_AWD1);
break;
/* Check analog watchdog 2 flag */
case ADC_AWD2_EVENT:
/* Set ADC state */
SET_BIT(hadc->State, HAL_ADC_STATE_AWD2);
/* Clear ADC analog watchdog flag */
__HAL_ADC_CLEAR_FLAG(hadc, ADC_FLAG_AWD2);
break;
/* Check analog watchdog 3 flag */
case ADC_AWD3_EVENT:
/* Set ADC state */
SET_BIT(hadc->State, HAL_ADC_STATE_AWD3);
/* Clear ADC analog watchdog flag */
__HAL_ADC_CLEAR_FLAG(hadc, ADC_FLAG_AWD3);
break;
/* Injected context queue overflow event */
case ADC_JQOVF_EVENT:
/* Set ADC state */
SET_BIT(hadc->State, HAL_ADC_STATE_INJ_JQOVF);
/* Set ADC error code to Injected context queue overflow */
SET_BIT(hadc->ErrorCode, HAL_ADC_ERROR_JQOVF);
/* Clear ADC Injected context queue overflow flag */
__HAL_ADC_CLEAR_FLAG(hadc, ADC_FLAG_JQOVF);
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);
}
else
{
/* Clear ADC Overrun flag only if Overrun is set to ADC_OVR_DATA_OVERWRITTEN
otherwise, data register is potentially overwritten by new converted data as soon
as OVR is cleared. */
__HAL_ADC_CLEAR_FLAG(hadc, ADC_FLAG_OVR);
}
break;
}
/* Return function status */
return HAL_OK;
}
/**
* @brief Enable ADC, start conversion of regular group with interruption.
* @note Interruptions enabled in this function according to initialization
* setting : EOC (end of conversion), EOS (end of sequence),
* OVR overrun.
* Each of these interruptions has its dedicated callback function.
* @note Case of multimode enabled (when multimode feature is available):
* HAL_ADC_Start_IT() must be called for ADC Slave first, then for
* ADC Master.
* For ADC Slave, ADC is enabled only (conversion is not started).
* For ADC Master, ADC is enabled and multimode conversion is started.
* @note To guarantee a proper reset of all interruptions once all the needed
* conversions are obtained, HAL_ADC_Stop_IT() must be called to ensure
* a correct stop of the IT-based conversions.
* @note By default, HAL_ADC_Start_IT() doesn't enable the End Of Sampling
* interruption. If required (e.g. in case of oversampling with trigger
* mode), the user must:
* 1. first clear the EOSMP flag if set with macro __HAL_ADC_CLEAR_FLAG(hadc, ADC_FLAG_EOSMP)
* 2. then enable the EOSMP interrupt with macro __HAL_ADC_ENABLE_IT(hadc, ADC_IT_EOSMP)
* before calling HAL_ADC_Start_IT().
* @param hadc: ADC handle
* @retval HAL status
*/
HAL_StatusTypeDef HAL_ADC_Start_IT(ADC_HandleTypeDef* hadc)
{
HAL_StatusTypeDef tmp_hal_status = HAL_OK;
ADC_TypeDef *tmpADC_Master;
/* 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 */
tmp_hal_status = ADC_Enable(hadc);
/* Start conversion if ADC is effectively enabled */
if (tmp_hal_status == HAL_OK)
{
/* State machine update: Check if an injected conversion is ongoing */
if (HAL_IS_BIT_SET(hadc->State, HAL_ADC_STATE_INJ_BUSY))
{
/* Reset ADC error code fields related to regular conversions only */
CLEAR_BIT(hadc->ErrorCode, (HAL_ADC_ERROR_OVR|HAL_ADC_ERROR_DMA));
}
else
{
/* Set ADC error code to none */
ADC_CLEAR_ERRORCODE(hadc);
}
/* Clear HAL_ADC_STATE_READY and regular conversion results bits, set HAL_ADC_STATE_REG_BUSY bit */
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 HAL_ADC_STATE_MULTIMODE_SLAVE bit
- by default if ADC is Master or Independent or if multimode feature is not available
- if MultiMode setting is set to independent mode (no dual regular or injected conversions are configured) */
if (ADC_NONMULTIMODE_OR_MULTIMODEMASTER(hadc))
{
CLEAR_BIT(hadc->State, HAL_ADC_STATE_MULTIMODE_SLAVE);
}
/* 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));
/* By default, disable all interruptions before enabling the desired ones */
__HAL_ADC_DISABLE_IT(hadc, (ADC_IT_EOC | ADC_IT_EOS | ADC_IT_OVR));
/* Enable required interruptions */
switch(hadc->Init.EOCSelection)
{
case ADC_EOC_SEQ_CONV:
__HAL_ADC_ENABLE_IT(hadc, ADC_IT_EOS);
break;
/* case ADC_EOC_SINGLE_CONV */
default:
__HAL_ADC_ENABLE_IT(hadc, ADC_IT_EOC);
break;
}
/* If hadc->Init.Overrun is set to ADC_OVR_DATA_PRESERVED, only then is
ADC_IT_OVR enabled; otherwise data overwrite is considered as normal
behavior and no CPU time is lost for a non-processed interruption */
if (hadc->Init.Overrun == ADC_OVR_DATA_PRESERVED)
{
__HAL_ADC_ENABLE_IT(hadc, ADC_IT_OVR);
}
/* Enable conversion of regular group. */
/* If software start has been selected, conversion starts immediately. */
/* If external trigger has been selected, conversion starts at next */
/* trigger event. */
/* Case of multimode enabled (when multimode feature is available): */
/* - if ADC is slave and dual regular conversions are enabled, ADC is */
/* enabled only (conversion is not started), */
/* - if ADC is master, ADC is enabled and conversion is started. */
if (ADC_INDEPENDENT_OR_NONMULTIMODEREGULAR_SLAVE(hadc) )
{
/* Multimode feature is not available or ADC Instance is Independent or Master,
or is not Slave ADC with dual regular conversions enabled.
Then set HAL_ADC_STATE_INJ_BUSY and reset HAL_ADC_STATE_INJ_EOC if JAUTO is set. */
if (READ_BIT(hadc->Instance->CFGR, ADC_CFGR_JAUTO) != RESET)
{
ADC_STATE_CLR_SET(hadc->State, HAL_ADC_STATE_INJ_EOC, HAL_ADC_STATE_INJ_BUSY);
/* Enable as well injected interruptions in case
HAL_ADCEx_InjectedStart_IT() has not been called beforehand. This
allows to start regular and injected conversions when JAUTO is
set with a single call to HAL_ADC_Start_IT() */
switch(hadc->Init.EOCSelection)
{
case ADC_EOC_SEQ_CONV:
__HAL_ADC_DISABLE_IT(hadc, ADC_IT_JEOC);
__HAL_ADC_ENABLE_IT(hadc, ADC_IT_JEOS);
break;
/* case ADC_EOC_SINGLE_CONV */
default:
__HAL_ADC_DISABLE_IT(hadc, ADC_IT_JEOS);
__HAL_ADC_ENABLE_IT(hadc, ADC_IT_JEOC);
break;
}
} /* if (READ_BIT(hadc->Instance->CFGR, ADC_CFGR_JAUTO) != RESET) */
/* Process unlocked */
__HAL_UNLOCK(hadc);
/* Start ADC */
SET_BIT(hadc->Instance->CR, ADC_CR_ADSTART);
}
else
{
/* hadc is the handle of a Slave ADC with dual regular conversions
enabled. Therefore, ADC_CR_ADSTART is NOT set */
SET_BIT(hadc->State, HAL_ADC_STATE_MULTIMODE_SLAVE);
/* if Master ADC JAUTO bit is set, Slave injected interruptions
are enabled nevertheless (for same reason as above) */
tmpADC_Master = ADC_MASTER_REGISTER(hadc);
if (READ_BIT(tmpADC_Master->CFGR, ADC_CFGR_JAUTO) != RESET)
{
/* First, update Slave State in setting HAL_ADC_STATE_INJ_BUSY bit
and in resetting HAL_ADC_STATE_INJ_EOC bit */
ADC_STATE_CLR_SET(hadc->State, HAL_ADC_STATE_INJ_EOC, HAL_ADC_STATE_INJ_BUSY);
/* Next, set Slave injected interruptions */
switch(hadc->Init.EOCSelection)
{
case ADC_EOC_SEQ_CONV:
__HAL_ADC_DISABLE_IT(hadc, ADC_IT_JEOC);
__HAL_ADC_ENABLE_IT(hadc, ADC_IT_JEOS);
break;
/* case ADC_EOC_SINGLE_CONV */
default:
__HAL_ADC_DISABLE_IT(hadc, ADC_IT_JEOS);
__HAL_ADC_ENABLE_IT(hadc, ADC_IT_JEOC);
break;
}
} /* if (READ_BIT(tmpADC_Master->CFGR, ADC_CFGR_JAUTO) != RESET) */
/* Process unlocked */
__HAL_UNLOCK(hadc);
} /* if (ADC_INDEPENDENT_OR_NONMULTIMODEREGULAR_SLAVE(hadc) ) */
} /* if (tmp_hal_status == HAL_OK) */
else
{
/* Process unlocked */
__HAL_UNLOCK(hadc);
}
}
else
{
tmp_hal_status = HAL_BUSY;
}
/* Return function status */
return tmp_hal_status;
}
/**
* @brief Stop ADC conversion of regular group (and injected group in
* case of auto_injection mode), disable interrution 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 ADC groups regular and injected */
tmp_hal_status = ADC_ConversionStop(hadc, ADC_REGULAR_INJECTED_GROUP);
/* 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_INJ_BUSY),
HAL_ADC_STATE_READY);
}
}
/* Process unlocked */
__HAL_UNLOCK(hadc);
/* Return function status */
return tmp_hal_status;
}
/**
* @brief Enable ADC, start conversion of regular group and transfer result through DMA.
* @note Interruptions enabled in this function:
* overrun (if applicable), DMA half transfer, DMA transfer complete.
* Each of these interruptions has its dedicated callback function.
* @note Case of multimode enabled (when multimode feature is available): HAL_ADC_Start_DMA()
* is designed for single-ADC mode only. For multimode, the dedicated
* HAL_ADCEx_MultiModeStart_DMA() function must be used.
* @param hadc: ADC handle
* @param pData: Destination Buffer address.
* @param Length: Length of data to be transferred from ADC peripheral to memory (in bytes)
* @retval HAL status.
*/
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);
/* Ensure that dual regular conversions are not enabled or unavailable. */
/* Otherwise, dedicated API HAL_ADCEx_MultiModeStart_DMA() must be used. */
if (ADC_IS_DUAL_REGULAR_CONVERSION_ENABLE(hadc) == RESET)
{
/* Enable the ADC peripheral */
tmp_hal_status = ADC_Enable(hadc);
/* Start conversion if ADC is effectively enabled */
if (tmp_hal_status == HAL_OK)
{
/* State machine update: Check if an injected conversion is ongoing */
if (HAL_IS_BIT_SET(hadc->State, HAL_ADC_STATE_INJ_BUSY))
{
/* Reset ADC error code fields related to regular conversions only */
CLEAR_BIT(hadc->ErrorCode, (HAL_ADC_ERROR_OVR | HAL_ADC_ERROR_DMA));
}
else
{
/* Set ADC error code to none */
ADC_CLEAR_ERRORCODE(hadc);
}
/* Clear HAL_ADC_STATE_READY and regular conversion results bits, set HAL_ADC_STATE_REG_BUSY bit */
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 HAL_ADC_STATE_MULTIMODE_SLAVE bit
- by default if ADC is Master or Independent or if multimode feature is not available
- if multimode setting is set to independent mode (no dual regular or injected conversions are configured) */
if (ADC_NONMULTIMODE_OR_MULTIMODEMASTER(hadc))
{
CLEAR_BIT(hadc->State, HAL_ADC_STATE_MULTIMODE_SLAVE);
}
/* 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));
/* With DMA, overrun event is always considered as an error even if
hadc->Init.Overrun is set to ADC_OVR_DATA_OVERWRITTEN. Therefore,
ADC_IT_OVR is enabled. */
__HAL_ADC_ENABLE_IT(hadc, ADC_IT_OVR);
/* Enable ADC DMA mode */
SET_BIT(hadc->Instance->CFGR, ADC_CFGR_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. */
/* Process unlocked */
__HAL_UNLOCK(hadc);
/* If software start has been selected, conversion starts immediately. */
/* If external trigger has been selected, conversion will start at next */
/* trigger event. */
SET_BIT(hadc->Instance->CR, ADC_CR_ADSTART);
}
else
{
/* Process unlocked */
__HAL_UNLOCK(hadc);
} /* if (tmp_hal_status == HAL_OK) */
}
else
{
tmp_hal_status = HAL_ERROR;
/* Process unlocked */
__HAL_UNLOCK(hadc);
} /* if (ADC_IS_DUAL_REGULAR_CONVERSION_ENABLE(hadc) == RESET) */
}
else
{
tmp_hal_status = HAL_BUSY;
}
/* Return function status */
return tmp_hal_status;
}
/**
* @brief Stop ADC conversion of regular group (and injected group in
* case of auto_injection mode), disable ADC DMA transfer, disable
* ADC peripheral.
* @note: ADC peripheral disable is forcing stop of potential
* conversion on injected group. If injected group is under use, it
* should be preliminarily stopped using HAL_ADCEx_InjectedStop function.
* @note Case of multimode enabled (when multimode feature is available):
* HAL_ADC_Stop_DMA() function is dedicated to single-ADC mode only.
* For multimode, the dedicated HAL_ADCEx_MultiModeStop_DMA() API must be used.
* @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 ADC group regular conversion on going */
tmp_hal_status = ADC_ConversionStop(hadc, ADC_REGULAR_INJECTED_GROUP);
/* 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) */
CLEAR_BIT(hadc->Instance->CFGR, ADC_CFGR_DMAEN);
/* Disable the DMA channel (in case of DMA in circular mode or stop */
/* 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_INTERNAL);
}
/* 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_INJ_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 Handle ADC interrupt request.
* @param hadc: ADC handle
* @retval None
*/
void HAL_ADC_IRQHandler(ADC_HandleTypeDef* hadc)
{
uint32_t overrun_error = 0; /* flag set if overrun occurrence has to be considered as an error */
ADC_TypeDef *tmpADC_Master;
uint32_t tmp_isr = hadc->Instance->ISR;
uint32_t tmp_ier = hadc->Instance->IER;
uint32_t tmp_cfgr = 0x0;
uint32_t tmp_cfgr_jqm = 0x0;
/* Check the parameters */
assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance));
assert_param(IS_ADC_EOC_SELECTION(hadc->Init.EOCSelection));
/* ====== Check End of Sampling flag for regular group ===== */
if (((tmp_isr & ADC_FLAG_EOSMP) == ADC_FLAG_EOSMP) && ((tmp_ier & ADC_IT_EOSMP) == ADC_IT_EOSMP))
{
/* Update state machine on end of sampling 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_EOSMP);
}
/* End Of Sampling callback */
HAL_ADCEx_EndOfSamplingCallback(hadc);
/* Clear regular group conversion flag */
__HAL_ADC_CLEAR_FLAG(hadc, ADC_FLAG_EOSMP );
}
/* ====== Check End of Conversion or Sequence flags for regular group ===== */
if( (((tmp_isr & ADC_FLAG_EOC) == ADC_FLAG_EOC) && ((tmp_ier & ADC_IT_EOC) == ADC_IT_EOC)) ||
(((tmp_isr & ADC_FLAG_EOS) == ADC_FLAG_EOS) && ((tmp_ier & ADC_IT_EOS) == 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);
}
/* Disable interruption if no further conversion upcoming by regular */
/* external trigger or by continuous mode, */
/* and if scan sequence if completed. */
if(ADC_IS_SOFTWARE_START_REGULAR(hadc))
{
if (ADC_INDEPENDENT_OR_NONMULTIMODEREGULAR_SLAVE(hadc))
{
/* check CONT bit directly in handle ADC CFGR register */
tmp_cfgr = READ_REG(hadc->Instance->CFGR);
}
else
{
/* else need to check Master ADC CONT bit */
tmpADC_Master = ADC_MASTER_REGISTER(hadc);
tmp_cfgr = READ_REG(tmpADC_Master->CFGR);
}
/* Carry on if continuous mode is disabled */
if (READ_BIT (tmp_cfgr, ADC_CFGR_CONT) != ADC_CFGR_CONT)
{
/* 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 sequence conversion interrupt */
/* Note: if Overrun interrupt was enabled with EOC or EOS interrupt */
/* in HAL_Start_IT(), it isn't disabled here because it can be used */
/* by overrun IRQ process below. */
__HAL_ADC_DISABLE_IT(hadc, ADC_IT_EOC | ADC_IT_EOS);
/* Clear HAL_ADC_STATE_REG_BUSY bit */
CLEAR_BIT(hadc->State, HAL_ADC_STATE_REG_BUSY);
/* If no injected conversion on-going, set HAL_ADC_STATE_READY bit */
if (HAL_IS_BIT_CLR(hadc->State, HAL_ADC_STATE_INJ_BUSY))
{
SET_BIT(hadc->State, HAL_ADC_STATE_READY);
}
}
else
{
/* Change ADC state to error state */
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);
}
}
} /* if (READ_BIT (tmp_cfgr, ADC_CFGR_CONT) != ADC_CFGR_CONT) */
} /* if(ADC_IS_SOFTWARE_START_REGULAR(hadc) */
/* Conversion complete callback */
/* Note: HAL_ADC_ConvCpltCallback can resort to
if( __HAL_ADC_GET_FLAG(&hadc, ADC_FLAG_EOS)) or
if( __HAL_ADC_GET_FLAG(&hadc, ADC_FLAG_EOC)) to determine whether
interruption has been triggered by end of conversion or end of
sequence. */
HAL_ADC_ConvCpltCallback(hadc);
/* Clear regular group conversion flag */
__HAL_ADC_CLEAR_FLAG(hadc, (ADC_FLAG_EOC | ADC_FLAG_EOS) );
}
/* ========== Check End of Conversion flag for injected group ========== */
if( (((tmp_isr & ADC_FLAG_JEOC) == ADC_FLAG_JEOC) && ((tmp_ier & ADC_IT_JEOC) == ADC_IT_JEOC)) ||
(((tmp_isr & ADC_FLAG_JEOS) == ADC_FLAG_JEOS) && ((tmp_ier & ADC_IT_JEOS) == ADC_IT_JEOS)) )
{
/* 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_INJ_EOC);
}
/* Check whether interruptions can be disabled only if
- injected conversions are software-triggered when injected queue management is disabled
OR
- auto-injection is enabled, continuous mode is disabled (CONT = 0)
and regular conversions are software-triggered */
/* If End of Sequence is reached, disable interrupts */
if( __HAL_ADC_GET_FLAG(hadc, ADC_FLAG_JEOS))
{
/* First, retrieve proper registers to check */
/* 1a. Are injected conversions that of a dual Slave ? */
if (ADC_INDEPENDENT_OR_NONMULTIMODEINJECTED_SLAVE(hadc))
{
/* hadc is not the handle of a Slave ADC with dual injected conversions enabled:
check JQM bit directly in ADC CFGR register */
tmp_cfgr_jqm = READ_REG(hadc->Instance->CFGR);
}
else
{
/* hadc is the handle of a Slave ADC with dual injected conversions enabled:
need to check JQM bit of Master ADC CFGR register */
tmpADC_Master = ADC_MASTER_REGISTER(hadc);
tmp_cfgr_jqm = READ_REG(tmpADC_Master->CFGR);
}
/* 1b. Is hadc the handle of a Slave ADC with regular conversions enabled? */
if (ADC_INDEPENDENT_OR_NONMULTIMODEREGULAR_SLAVE(hadc))
{
/* hadc is not the handle of a Slave ADC with dual regular conversions enabled:
check JAUTO and CONT bits directly in ADC CFGR register */
tmp_cfgr = READ_REG(hadc->Instance->CFGR);
}
else
{
/* hadc is not the handle of a Slave ADC with dual regular conversions enabled:
check JAUTO and CONT bits of Master ADC CFGR register */
tmpADC_Master = ADC_MASTER_REGISTER(hadc);
tmp_cfgr = READ_REG(tmpADC_Master->CFGR);
}
/* Secondly, check whether JEOC and JEOS interruptions can be disabled */
if ((ADC_IS_SOFTWARE_START_INJECTED(hadc) && (READ_BIT(tmp_cfgr_jqm, ADC_CFGR_JQM) != ADC_CFGR_JQM))
&& (!((READ_BIT(tmp_cfgr, (ADC_CFGR_JAUTO|ADC_CFGR_CONT)) == (ADC_CFGR_JAUTO|ADC_CFGR_CONT)) &&
(ADC_IS_SOFTWARE_START_REGULAR(hadc)))) )
{
/* Allowed to modify bits ADC_IT_JEOC/ADC_IT_JEOS only if bit */
/* JADSTART==0 (no conversion on going) */
if (ADC_IS_CONVERSION_ONGOING_INJECTED(hadc) == RESET)
{
/* Disable ADC end of sequence conversion interrupt */
__HAL_ADC_DISABLE_IT(hadc, ADC_IT_JEOC | ADC_IT_JEOS);
/* Clear HAL_ADC_STATE_INJ_BUSY bit */
CLEAR_BIT(hadc->State, HAL_ADC_STATE_INJ_BUSY);
/* If no regular conversion on-going, set HAL_ADC_STATE_READY bit */
if (HAL_IS_BIT_CLR(hadc->State, HAL_ADC_STATE_REG_BUSY))
{
SET_BIT(hadc->State, HAL_ADC_STATE_READY);
}
}
else
{
/* Change ADC state to error state */
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);
}
}
} /* if( __HAL_ADC_GET_FLAG(hadc, ADC_FLAG_JEOS)) */
/* Injected Conversion complete callback */
/* Note: HAL_ADCEx_InjectedConvCpltCallback can resort to
if( __HAL_ADC_GET_FLAG(&hadc, ADC_FLAG_JEOS)) or
if( __HAL_ADC_GET_FLAG(&hadc, ADC_FLAG_JEOC)) to determine whether
interruption has been triggered by end of conversion or end of
sequence. */
HAL_ADCEx_InjectedConvCpltCallback(hadc);
/* Clear injected group conversion flag */
__HAL_ADC_CLEAR_FLAG(hadc, ADC_FLAG_JEOC | ADC_FLAG_JEOS);
}
/* ========== Check Analog watchdog flags =================================================== */
/* ========== Check Analog watchdog 1 flag ========== */
if (((tmp_isr & ADC_FLAG_AWD1) == ADC_FLAG_AWD1) && ((tmp_ier & ADC_IT_AWD1) == ADC_IT_AWD1))
{
/* Set ADC state */
SET_BIT(hadc->State, HAL_ADC_STATE_AWD1);
/* Level out of window 1 callback */
HAL_ADC_LevelOutOfWindowCallback(hadc);
/* Clear ADC analog watchdog flag */
__HAL_ADC_CLEAR_FLAG(hadc, ADC_FLAG_AWD1);
}
/* ========== Check analog watchdog 2 flag ========== */
if (((tmp_isr & ADC_FLAG_AWD2) == ADC_FLAG_AWD2) && ((tmp_ier & ADC_IT_AWD2) == ADC_IT_AWD2))
{
/* Set ADC state */
SET_BIT(hadc->State, HAL_ADC_STATE_AWD2);
/* Level out of window 2 callback */
HAL_ADCEx_LevelOutOfWindow2Callback(hadc);
/* Clear ADC analog watchdog flag */
__HAL_ADC_CLEAR_FLAG(hadc, ADC_FLAG_AWD2);
}
/* ========== Check analog watchdog 3 flag ========== */
if (((tmp_isr & ADC_FLAG_AWD3) == ADC_FLAG_AWD3) && ((tmp_ier & ADC_IT_AWD3) == ADC_IT_AWD3))
{
/* Set ADC state */
SET_BIT(hadc->State, HAL_ADC_STATE_AWD3);
/* Level out of window 3 callback */
HAL_ADCEx_LevelOutOfWindow3Callback(hadc);
/* Clear ADC analog watchdog flag */
__HAL_ADC_CLEAR_FLAG(hadc, ADC_FLAG_AWD3);
}
/* ========== Check Overrun flag ========== */
if (((tmp_isr & ADC_FLAG_OVR) == ADC_FLAG_OVR) && ((tmp_ier & ADC_IT_OVR) == 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)
{
overrun_error = 1;
}
else
{
/* check DMA configuration, depending on multimode set or not,
or whether or not multimode feature is available */
if (ADC_IS_DUAL_CONVERSION_ENABLE(hadc) == RESET)
{
/* Multimode not set or feature not available or ADC independent */
if (HAL_IS_BIT_SET(hadc->Instance->CFGR, ADC_CFGR_DMAEN))
{
overrun_error = 1;
}
}
else
{
/* Multimode (when feature is available) is enabled,
Common Control Register MDMA bits must be checked. */
if (ADC_MULTIMODE_DMA_ENABLED())
{
overrun_error = 1;
}
}
}
if (overrun_error == 1)
{
/* Change ADC state to error state */
SET_BIT(hadc->State, HAL_ADC_STATE_REG_OVR);
/* Set ADC error code to overrun */
SET_BIT(hadc->ErrorCode, HAL_ADC_ERROR_OVR);
/* Error callback */
HAL_ADC_ErrorCallback(hadc);
}
/* Clear the Overrun flag, to be done AFTER HAL_ADC_ErrorCallback() since
old data is preserved until OVR is reset */
__HAL_ADC_CLEAR_FLAG(hadc, ADC_FLAG_OVR);
}
/* ========== Check Injected context queue overflow flag ========== */
if (((tmp_isr & ADC_FLAG_JQOVF) == ADC_FLAG_JQOVF) && ((tmp_ier & ADC_IT_JQOVF) == ADC_IT_JQOVF))
{
/* Change ADC state to overrun state */
SET_BIT(hadc->State, HAL_ADC_STATE_INJ_JQOVF);
/* Set ADC error code to Injected context queue overflow */
SET_BIT(hadc->ErrorCode, HAL_ADC_ERROR_JQOVF);
/* Clear the Injected context queue overflow flag */
__HAL_ADC_CLEAR_FLAG(hadc, ADC_FLAG_JQOVF);
/* Error callback */
HAL_ADCEx_InjectedQueueOverflowCallback(hadc);
}
}
/**
* @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 1 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_LevelOutOfWindowCallback must be implemented in the user file.
*/
}
/**
* @brief ADC error callback in non-blocking mode
* (ADC conversion with interruption or transfer by DMA).
* @note In case of error due to overrun when using ADC with DMA transfer
* (HAL ADC handle paramater "ErrorCode" to state "HAL_ADC_ERROR_OVR"):
* - Reinitialize the DMA using function "HAL_ADC_Stop_DMA()".
* - If needed, restart a new ADC conversion using function
* "HAL_ADC_Start_DMA()"
* (this function is also clearing overrun flag)
* @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 Configure a channel to be assigned to ADC group regular.
* @note In case of usage of internal measurement channels:
* Vbat/VrefInt/TempSensor.
* These internal paths can be disabled using function
* HAL_ADC_DeInit().
* @note Possibility to update parameters on the fly:
* This function initializes channel into ADC group regular,
* following calls to this function can be used to reconfigure
* some parameters of structure "ADC_ChannelConfTypeDef" on the fly,
* without resetting the ADC.
* The setting of these parameters is conditioned to ADC state:
* Refer to comments of structure "ADC_ChannelConfTypeDef".
* @param hadc: ADC handle
* @param sConfig: Structure of ADC channel assigned to ADC group regular.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_ADC_ConfigChannel(ADC_HandleTypeDef* hadc, ADC_ChannelConfTypeDef* sConfig)
{
HAL_StatusTypeDef tmp_hal_status = HAL_OK;
ADC_Common_TypeDef *tmpADC_Common;
uint32_t tmpOffsetShifted;
__IO uint32_t wait_loop_index = 0;
/* Check the parameters */
assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance));
assert_param(IS_ADC_REGULAR_RANK(sConfig->Rank));
assert_param(IS_ADC_SAMPLE_TIME(sConfig->SamplingTime));
assert_param(IS_ADC_SINGLE_DIFFERENTIAL(sConfig->SingleDiff));
assert_param(IS_ADC_OFFSET_NUMBER(sConfig->OffsetNumber));
assert_param(IS_ADC_RANGE(ADC_GET_RESOLUTION(hadc), sConfig->Offset));
/* if ROVSE is set, the value of the OFFSETy_EN bit in ADCx_OFRy register is
ignored (considered as reset) */
assert_param(!((sConfig->OffsetNumber != ADC_OFFSET_NONE) && (hadc->Init.OversamplingMode == ENABLE)));
/* Verification of channel number */
if (sConfig->SingleDiff != ADC_DIFFERENTIAL_ENDED)
{
assert_param(IS_ADC_CHANNEL(hadc, sConfig->Channel));
}
else
{
assert_param(IS_ADC_DIFF_CHANNEL(hadc, 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 on regular group: */
/* - Channel number */
/* - Channel rank */
if (ADC_IS_CONVERSION_ONGOING_REGULAR(hadc) == RESET)
{
/* Regular sequence configuration */
/* Clear the old SQx bits then set the new ones for the selected rank */
/* For Rank 1 to 4 */
if (sConfig->Rank < 5)
{
MODIFY_REG(hadc->Instance->SQR1,
ADC_SQR1_RK(ADC_SQR2_SQ5, sConfig->Rank),
ADC_SQR1_RK(sConfig->Channel, sConfig->Rank));
}
/* For Rank 5 to 9 */
else if (sConfig->Rank < 10)
{
MODIFY_REG(hadc->Instance->SQR2,
ADC_SQR2_RK(ADC_SQR2_SQ5, sConfig->Rank),
ADC_SQR2_RK(sConfig->Channel, sConfig->Rank));
}
/* For Rank 10 to 14 */
else if (sConfig->Rank < 15)
{
MODIFY_REG(hadc->Instance->SQR3,
ADC_SQR3_RK(ADC_SQR3_SQ10, sConfig->Rank),
ADC_SQR3_RK(sConfig->Channel, sConfig->Rank));
}
/* For Rank 15 to 16 */
else
{
MODIFY_REG(hadc->Instance->SQR4,
ADC_SQR4_RK(ADC_SQR4_SQ15, sConfig->Rank),
ADC_SQR4_RK(sConfig->Channel, sConfig->Rank));
}
/* 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 sampling time */
/* - Channel offset */
if (ADC_IS_CONVERSION_ONGOING_REGULAR_INJECTED(hadc) == RESET)
{
/* Channel sampling time configuration */
/* Clear the old sample time then set the new one for the selected channel */
/* For channels 10 to 18 */
if (sConfig->Channel >= ADC_CHANNEL_10)
{
ADC_SMPR2_SETTING(hadc, sConfig->SamplingTime, sConfig->Channel);
}
else /* For channels 0 to 9 */
{
ADC_SMPR1_SETTING(hadc, sConfig->SamplingTime, sConfig->Channel);
}
/* Configure the offset: offset enable/disable, channel, offset value */
/* Shift the offset with respect to the selected ADC resolution. */
/* Offset has to be left-aligned on bit 11, the LSB (right bits) are set to 0 */
tmpOffsetShifted = ADC_OFFSET_SHIFT_RESOLUTION(hadc, sConfig->Offset);
switch (sConfig->OffsetNumber)
{
/* Configure offset register i when applicable: */
/* - Enable offset */
/* - Set channel number */
/* - Set offset value */
case ADC_OFFSET_1:
MODIFY_REG(hadc->Instance->OFR1,
ADC_OFR_FIELDS,
ADC_OFR1_OFFSET1_EN | ADC_OFR_CHANNEL(sConfig->Channel) | tmpOffsetShifted);
break;
case ADC_OFFSET_2:
MODIFY_REG(hadc->Instance->OFR2,
ADC_OFR_FIELDS,
ADC_OFR2_OFFSET2_EN | ADC_OFR_CHANNEL(sConfig->Channel) | tmpOffsetShifted);
break;
case ADC_OFFSET_3:
MODIFY_REG(hadc->Instance->OFR3,
ADC_OFR_FIELDS,
ADC_OFR3_OFFSET3_EN | ADC_OFR_CHANNEL(sConfig->Channel) | tmpOffsetShifted);
break;
case ADC_OFFSET_4:
MODIFY_REG(hadc->Instance->OFR4,
ADC_OFR_FIELDS,
ADC_OFR4_OFFSET4_EN | ADC_OFR_CHANNEL(sConfig->Channel) | tmpOffsetShifted);
break;
/* Case ADC_OFFSET_NONE */
default :
/* Scan OFR1, OFR2, OFR3, OFR4 to check if the selected channel is enabled.
If this is the case, offset OFRx is disabled since
sConfig->OffsetNumber = ADC_OFFSET_NONE. */
if (((hadc->Instance->OFR1) & ADC_OFR1_OFFSET1_CH) == ADC_OFR_CHANNEL(sConfig->Channel))
{
CLEAR_BIT(hadc->Instance->OFR1, ADC_OFR1_OFFSET1_EN);
}
if (((hadc->Instance->OFR2) & ADC_OFR2_OFFSET2_CH) == ADC_OFR_CHANNEL(sConfig->Channel))
{
CLEAR_BIT(hadc->Instance->OFR2, ADC_OFR2_OFFSET2_EN);
}
if (((hadc->Instance->OFR3) & ADC_OFR3_OFFSET3_CH) == ADC_OFR_CHANNEL(sConfig->Channel))
{
CLEAR_BIT(hadc->Instance->OFR3, ADC_OFR3_OFFSET3_EN);
}
if (((hadc->Instance->OFR4) & ADC_OFR4_OFFSET4_CH) == ADC_OFR_CHANNEL(sConfig->Channel))
{
CLEAR_BIT(hadc->Instance->OFR4, ADC_OFR4_OFFSET4_EN);
}
break;
} /* switch (sConfig->OffsetNumber) */
} /* if (ADC_IS_CONVERSION_ONGOING_REGULAR_INJECTED(hadc) == RESET) */
/* Parameters update conditioned to ADC state: */
/* Parameters that can be updated only when ADC is disabled: */
/* - Single or differential mode */
/* - Internal measurement channels: Vbat/VrefInt/TempSensor */
if (ADC_IS_ENABLE(hadc) == RESET)
{
/* Configuration of differential mode */
if (sConfig->SingleDiff != ADC_DIFFERENTIAL_ENDED)
{
/* Disable differential mode (default mode: single-ended) */
CLEAR_BIT(hadc->Instance->DIFSEL, ADC_DIFSEL_CHANNEL(sConfig->Channel));
}
else
{
/* Enable differential mode */
SET_BIT(hadc->Instance->DIFSEL, ADC_DIFSEL_CHANNEL(sConfig->Channel));
/* Sampling time configuration of channel ADC_IN+1 (negative input) */
/* Clear the old sample time then set the new one for the selected */
/* channel. */
/* Starting from channel 9, SMPR2 register must be configured */
if (sConfig->Channel >= ADC_CHANNEL_9)
{
ADC_SMPR2_SETTING(hadc, sConfig->SamplingTime, sConfig->Channel+1);
}
else /* For channels 0 to 8, SMPR1 must be configured */
{
ADC_SMPR1_SETTING(hadc, sConfig->SamplingTime, sConfig->Channel+1);
}
}
/* Management of internal measurement channels: Vbat/VrefInt/TempSensor. */
/* If internal channel selected, enable dedicated internal buffers and */
/* paths. */
/* Note: these internal measurement paths can be disabled using */
/* HAL_ADC_DeInit(). */
/* Configuration of common ADC parameters */
tmpADC_Common = ADC_COMMON_REGISTER(hadc);
/* If the requested internal measurement path has already been enabled, */
/* bypass the configuration processing. */
if (( (sConfig->Channel == ADC_CHANNEL_TEMPSENSOR) &&
(HAL_IS_BIT_CLR(tmpADC_Common->CCR, ADC_CCR_TSEN)) ) ||
( (sConfig->Channel == ADC_CHANNEL_VBAT) &&
(HAL_IS_BIT_CLR(tmpADC_Common->CCR, ADC_CCR_VBATEN)) ) ||
( (sConfig->Channel == ADC_CHANNEL_VREFINT) &&
(HAL_IS_BIT_CLR(tmpADC_Common->CCR, ADC_CCR_VREFEN)))
)
{
/* Configuration of common ADC parameters (continuation) */
/* Software is allowed to change common parameters only when all ADCs */
/* of the common group are disabled. */
if ((ADC_IS_ENABLE(hadc) == RESET) &&
(ADC_ANY_OTHER_ENABLED(hadc) == RESET) )
{
if (sConfig->Channel == ADC_CHANNEL_TEMPSENSOR)
{
if (ADC_TEMPERATURE_SENSOR_INSTANCE(hadc))
{
SET_BIT(tmpADC_Common->CCR, ADC_CCR_TSEN);
/* Delay for temperature sensor stabilization time */
/* Wait loop initialization and execution */
/* Note: Variable divided by 2 to compensate partially */
/* CPU processing cycles. */
wait_loop_index = (ADC_TEMPSENSOR_DELAY_US * (SystemCoreClock / (1000000 * 2)));
while(wait_loop_index != 0)
{
wait_loop_index--;
}
}
}
else if (sConfig->Channel == ADC_CHANNEL_VBAT)
{
if (ADC_BATTERY_VOLTAGE_INSTANCE(hadc))
{
SET_BIT(tmpADC_Common->CCR, ADC_CCR_VBATEN);
}
}
else if (sConfig->Channel == ADC_CHANNEL_VREFINT)
{
if (ADC_VREFINT_INSTANCE(hadc))
{
SET_BIT(tmpADC_Common->CCR, ADC_CCR_VREFEN);
}
}
}
/* If the requested internal measurement path has already been */
/* enabled and other ADC of the common group are enabled, internal */
/* measurement paths cannot be enabled. */
else
{
/* Update ADC state machine to error */
SET_BIT(hadc->State, HAL_ADC_STATE_ERROR_CONFIG);
tmp_hal_status = HAL_ERROR;
}
}
} /* if (ADC_IS_ENABLE(hadc) == RESET) */
} /* if (ADC_IS_CONVERSION_ONGOING_REGULAR(hadc) == RESET) */
/* 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 Configure the analog watchdog.
* @note Possibility to update parameters on the fly:
* This function initializes the selected analog watchdog, successive
* calls to this function can be used to reconfigure some parameters
* of structure "ADC_AnalogWDGConfTypeDef" on the fly, without resetting
* the ADC.
* The setting of these parameters is conditioned to ADC state.
* For parameters constraints, see comments of structure
* "ADC_AnalogWDGConfTypeDef".
* @note Analog watchdog thresholds can be modified while ADC conversion
* is on going.
* In this case, some constraints must be taken into account:
* the programmed threshold values are effective from the next
* ADC EOC (end of unitary conversion).
* Considering that registers write delay may happen due to
* bus activity, this might cause an uncertainty on the
* effective timing of the new programmed threshold values.
* @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;
uint32_t tmpADCFlagAWD2orAWD3;
uint32_t tmpADCITAWD2orAWD3;
/* Check the parameters */
assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance));
assert_param(IS_ADC_ANALOG_WATCHDOG_NUMBER(AnalogWDGConfig->WatchdogNumber));
assert_param(IS_ADC_ANALOG_WATCHDOG_MODE(AnalogWDGConfig->WatchdogMode));
assert_param(IS_FUNCTIONAL_STATE(AnalogWDGConfig->ITMode));
if((AnalogWDGConfig->WatchdogMode == ADC_ANALOGWATCHDOG_SINGLE_REG) ||
(AnalogWDGConfig->WatchdogMode == ADC_ANALOGWATCHDOG_SINGLE_INJEC) ||
(AnalogWDGConfig->WatchdogMode == ADC_ANALOGWATCHDOG_SINGLE_REGINJEC) )
{
assert_param(IS_ADC_CHANNEL(hadc, AnalogWDGConfig->Channel));
}
/* 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));
/* 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 and injected groups: */
/* - Analog watchdog channels */
/* - Analog watchdog thresholds */
if (ADC_IS_CONVERSION_ONGOING_REGULAR_INJECTED(hadc) == RESET)
{
/* Analog watchdogs configuration */
if(AnalogWDGConfig->WatchdogNumber == ADC_ANALOGWATCHDOG_1)
{
/* Configuration of analog watchdog: */
/* - Set the analog watchdog enable mode: regular and/or injected */
/* groups, one or overall group of channels. */
/* - Set the Analog watchdog channel (is not used if watchdog */
/* mode "all channels": ADC_CFGR_AWD1SGL=0). */
MODIFY_REG(hadc->Instance->CFGR, ADC_CFGR_WD_FIELDS,
AnalogWDGConfig->WatchdogMode | ADC_CFGR_SET_AWD1CH(AnalogWDGConfig->Channel) );
/* Shift the offset with respect to 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 */
MODIFY_REG(hadc->Instance->TR1,
ADC_TR1_HT1 | ADC_TR1_LT1,
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_AWD1);
/* Configure ADC Analog watchdog interrupt */
if(AnalogWDGConfig->ITMode == ENABLE)
{
/* Enable the ADC Analog watchdog interrupt */
__HAL_ADC_ENABLE_IT(hadc, ADC_IT_AWD1);
}
else
{
/* Disable the ADC Analog watchdog interrupt */
__HAL_ADC_DISABLE_IT(hadc, ADC_IT_AWD1);
}
/* Update state, clear previous result related to AWD1 */
CLEAR_BIT(hadc->State, HAL_ADC_STATE_AWD1);
}
/* Case of ADC_ANALOGWATCHDOG_2 and ADC_ANALOGWATCHDOG_3 */
else
{
/* Shift the threshold with respect to the selected ADC resolution */
/* have to be left-aligned on bit 7, the LSB (right bits) are set to 0 */
tmpAWDHighThresholdShifted = ADC_AWD23THRESHOLD_SHIFT_RESOLUTION(hadc, AnalogWDGConfig->HighThreshold);
tmpAWDLowThresholdShifted = ADC_AWD23THRESHOLD_SHIFT_RESOLUTION(hadc, AnalogWDGConfig->LowThreshold);
if (AnalogWDGConfig->WatchdogNumber == ADC_ANALOGWATCHDOG_2)
{
/* Set the Analog watchdog channel or group of channels. This also */
/* enables the watchdog. */
/* Note: Conditional register reset, because several channels can be */
/* set by successive calls of this function. */
if (AnalogWDGConfig->WatchdogMode != ADC_ANALOGWATCHDOG_NONE)
{
SET_BIT(hadc->Instance->AWD2CR, ADC_CFGR_SET_AWD23CR(AnalogWDGConfig->Channel));
}
else
{
CLEAR_BIT(hadc->Instance->AWD2CR, ADC_AWD2CR_AWD2CH);
}
/* Set the high and low thresholds */
MODIFY_REG(hadc->Instance->TR2, ADC_TR2_HT2 | ADC_TR2_LT2,
ADC_TRX_HIGHTHRESHOLD (tmpAWDHighThresholdShifted) | tmpAWDLowThresholdShifted );
/* Set temporary variable to flag and IT of AWD2 or AWD3 for further */
/* settings. */
tmpADCFlagAWD2orAWD3 = ADC_FLAG_AWD2;
tmpADCITAWD2orAWD3 = ADC_IT_AWD2;
/* Update state, clear previous result related to AWD2 */
CLEAR_BIT(hadc->State, HAL_ADC_STATE_AWD2);
}
/* (AnalogWDGConfig->WatchdogNumber == ADC_ANALOGWATCHDOG_3) */
else
{
/* Set the Analog watchdog channel or group of channels. This also */
/* enables the watchdog. */
/* Note: Conditional register reset, because several channels can be */
/* set by successive calls of this function. */
if (AnalogWDGConfig->WatchdogMode != ADC_ANALOGWATCHDOG_NONE)
{
SET_BIT(hadc->Instance->AWD3CR, ADC_CFGR_SET_AWD23CR(AnalogWDGConfig->Channel));
}
else
{
CLEAR_BIT(hadc->Instance->AWD3CR, ADC_AWD3CR_AWD3CH);
}
/* Set the high and low thresholds */
MODIFY_REG(hadc->Instance->TR3, ADC_TR3_HT3 | ADC_TR3_LT3,
ADC_TRX_HIGHTHRESHOLD (tmpAWDHighThresholdShifted) | tmpAWDLowThresholdShifted );
/* Set temporary variable to flag and IT of AWD2 or AWD3 for further */
/* settings. */
tmpADCFlagAWD2orAWD3 = ADC_FLAG_AWD3;
tmpADCITAWD2orAWD3 = ADC_IT_AWD3;
/* Update state, clear previous result related to AWD3 */
CLEAR_BIT(hadc->State, HAL_ADC_STATE_AWD3);
}
/* Clear the ADC Analog watchdog flag (in case left enabled by */
/* previous ADC operations) to be ready to use for HAL_ADC_IRQHandler() */
/* or HAL_ADC_PollForEvent(). */
__HAL_ADC_CLEAR_FLAG(hadc, tmpADCFlagAWD2orAWD3);
/* Configure ADC Analog watchdog interrupt */
if(AnalogWDGConfig->ITMode == ENABLE)
{
__HAL_ADC_ENABLE_IT(hadc, tmpADCITAWD2orAWD3);
}
else
{
__HAL_ADC_DISABLE_IT(hadc, tmpADCITAWD2orAWD3);
}
}
}
/* If a conversion is on going on regular or injected groups, 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 ADC 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 handle 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 ADC handle state (bitfield on 32 bits)
*/
uint32_t HAL_ADC_GetState(ADC_HandleTypeDef* hadc)
{
/* Check the parameters */
assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance));
/* Return ADC handle state */
return hadc->State;
}
/**
* @brief Return the ADC error code.
* @param hadc: ADC handle
* @retval ADC error code (bitfield on 32 bits)
*/
uint32_t HAL_ADC_GetError(ADC_HandleTypeDef *hadc)
{
/* Check the parameters */
assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance));
return hadc->ErrorCode;
}
/**
* @}
*/
/**
* @}
*/
/** @defgroup ADC_Private_Functions ADC Private Functions
* @{
*/
/**
* @brief Stop ADC conversion.
* @param hadc: ADC handle
* @param ConversionGroup: ADC group regular and/or injected.
* This parameter can be one of the following values:
* @arg @ref ADC_REGULAR_GROUP ADC regular conversion type.
* @arg @ref ADC_INJECTED_GROUP ADC injected conversion type.
* @arg @ref ADC_REGULAR_INJECTED_GROUP ADC regular and injected conversion type.
* @retval HAL status.
*/
HAL_StatusTypeDef ADC_ConversionStop(ADC_HandleTypeDef* hadc, uint32_t ConversionGroup)
{
uint32_t tmp_ADC_CR_ADSTART_JADSTART = 0;
uint32_t tickstart = 0;
uint32_t Conversion_Timeout_CPU_cycles = 0;
/* Check the parameters */
assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance));
assert_param(IS_ADC_CONVERSION_GROUP(ConversionGroup));
/* Verification if ADC is not already stopped (on regular and injected */
/* groups) to bypass this function if not needed. */
if (ADC_IS_CONVERSION_ONGOING_REGULAR_INJECTED(hadc))
{
/* Particular case of continuous auto-injection mode combined with */
/* auto-delay mode. */
/* In auto-injection mode, regular group stop ADC_CR_ADSTP is used (not */
/* injected group stop ADC_CR_JADSTP). */
/* Procedure to be followed: Wait until JEOS=1, clear JEOS, set ADSTP=1 */
/* (see reference manual). */
if ((HAL_IS_BIT_SET(hadc->Instance->CFGR, ADC_CFGR_JAUTO))
&& (hadc->Init.ContinuousConvMode==ENABLE)
&& (hadc->Init.LowPowerAutoWait==ENABLE))
{
/* Use stop of regular group */
ConversionGroup = ADC_REGULAR_GROUP;
/* Wait until JEOS=1 (maximum Timeout: 4 injected conversions) */
while(__HAL_ADC_GET_FLAG(hadc, ADC_FLAG_JEOS) == RESET)
{
if (Conversion_Timeout_CPU_cycles >= (ADC_CONVERSION_TIME_MAX_CPU_CYCLES *4))
{
/* 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;
}
Conversion_Timeout_CPU_cycles ++;
}
/* Clear JEOS */
__HAL_ADC_CLEAR_FLAG(hadc, ADC_FLAG_JEOS);
}
/* Stop potential conversion on going on regular group */
if (ConversionGroup != ADC_INJECTED_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 */
SET_BIT(hadc->Instance->CR, ADC_CR_ADSTP);
}
}
/* Stop potential conversion on going on injected group */
if (ConversionGroup != ADC_REGULAR_GROUP)
{
/* Software is allowed to set JADSTP only when JADSTART=1 and ADDIS=0 */
if (HAL_IS_BIT_SET(hadc->Instance->CR, ADC_CR_JADSTART) &&
HAL_IS_BIT_CLR(hadc->Instance->CR, ADC_CR_ADDIS) )
{
/* Stop conversions on injected group */
SET_BIT(hadc->Instance->CR, ADC_CR_JADSTP);
}
}
/* Selection of start and stop bits with respect to the regular or injected group */
switch(ConversionGroup)
{
case ADC_REGULAR_INJECTED_GROUP:
tmp_ADC_CR_ADSTART_JADSTART = (ADC_CR_ADSTART | ADC_CR_JADSTART);
break;
case ADC_INJECTED_GROUP:
tmp_ADC_CR_ADSTART_JADSTART = ADC_CR_JADSTART;
break;
/* Case ADC_REGULAR_GROUP only*/
default:
tmp_ADC_CR_ADSTART_JADSTART = ADC_CR_ADSTART;
break;
}
/* Wait for conversion effectively stopped */
tickstart = HAL_GetTick();
while((hadc->Instance->CR & tmp_ADC_CR_ADSTART_JADSTART) != 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;
}
}
} /* if (ADC_IS_CONVERSION_ONGOING_REGULAR_INJECTED(hadc)) */
/* Return HAL status */
return HAL_OK;
}
/**
* @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()).
* @param hadc: ADC handle
* @retval HAL status.
*/
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 */
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 */
ADC_ENABLE(hadc);
/* Wait for ADC effectively enabled */
tickstart = HAL_GetTick();
while(__HAL_ADC_GET_FLAG(hadc, ADC_FLAG_RDY) == RESET)
{
/* If ADEN bit is set less than 4 ADC clock cycles after the ADCAL bit
has been cleared (after a calibration), ADEN bit is reset by the
calibration logic.
The workaround is to continue setting ADEN until ADRDY is becomes 1.
Additionally, ADC_ENABLE_TIMEOUT is defined to encompass this
4 ADC clock cycle duration */
ADC_ENABLE(hadc);
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.
*/
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 */
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 DMA transfer complete callback.
* @param hdma: pointer to DMA handle.
* @retval None
*/
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)))
{
/* Update ADC state machine */
SET_BIT(hadc->State, HAL_ADC_STATE_REG_EOC);
/* Is it the end of the regular sequence ? */
if (HAL_IS_BIT_SET(hadc->Instance->ISR, ADC_FLAG_EOS))
{
/* Are conversions software-triggered ? */
if(ADC_IS_SOFTWARE_START_REGULAR(hadc))
{
/* Is CONT bit set ? */
if (READ_BIT(hadc->Instance->CFGR, ADC_CFGR_CONT) == RESET)
{
/* CONT bit is not set, no more conversions expected */
CLEAR_BIT(hadc->State, HAL_ADC_STATE_REG_BUSY);
if (HAL_IS_BIT_CLR(hadc->State, HAL_ADC_STATE_INJ_BUSY))
{
SET_BIT(hadc->State, HAL_ADC_STATE_READY);
}
}
}
}
else
{
/* DMA End of Transfer interrupt was triggered but conversions sequence
is not over. If DMACFG is set to 0, conversions are stopped. */
if (READ_BIT(hadc->Instance->CFGR, ADC_CFGR_DMACFG) == RESET)
{
/* DMACFG bit is not set, conversions are stopped. */
CLEAR_BIT(hadc->State, HAL_ADC_STATE_REG_BUSY);
if (HAL_IS_BIT_CLR(hadc->State, HAL_ADC_STATE_INJ_BUSY))
{
SET_BIT(hadc->State, HAL_ADC_STATE_READY);
}
}
}
/* Conversion complete callback */
HAL_ADC_ConvCpltCallback(hadc);
}
else /* DMA or internal error occurred (or both) */
{
/* In case of internal error, */
if (HAL_IS_BIT_SET(hadc->State, HAL_ADC_STATE_ERROR_INTERNAL))
{
/* call Error Callback function */
HAL_ADC_ErrorCallback(hadc);
}
}
}
/**
* @brief DMA half transfer complete callback.
* @param hdma: pointer to DMA handle.
* @retval None
*/
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
*/
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****/