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