|
- /**
- ******************************************************************************
- * @file stm32l0xx_ll_adc.c
- * @author MCD Application Team
- * @brief ADC LL module driver
- ******************************************************************************
- * @attention
- *
- * <h2><center>© Copyright(c) 2016 STMicroelectronics.
- * All rights reserved.</center></h2>
- *
- * This software component is licensed by ST under BSD 3-Clause license,
- * the "License"; You may not use this file except in compliance with the
- * License. You may obtain a copy of the License at:
- * opensource.org/licenses/BSD-3-Clause
- *
- ******************************************************************************
- */
- #if defined(USE_FULL_LL_DRIVER)
-
- /* Includes ------------------------------------------------------------------*/
- #include "stm32l0xx_ll_adc.h"
- #include "stm32l0xx_ll_bus.h"
-
- #ifdef USE_FULL_ASSERT
- #include "stm32_assert.h"
- #else
- #define assert_param(expr) ((void)0U)
- #endif
-
- /** @addtogroup STM32L0xx_LL_Driver
- * @{
- */
-
- #if defined (ADC1)
-
- /** @addtogroup ADC_LL ADC
- * @{
- */
-
- /* Private types -------------------------------------------------------------*/
- /* Private variables ---------------------------------------------------------*/
- /* Private constants ---------------------------------------------------------*/
- /** @addtogroup ADC_LL_Private_Constants
- * @{
- */
-
- /* Definitions of ADC hardware constraints delays */
- /* Note: Only ADC peripheral HW delays are defined in ADC LL driver driver, */
- /* not timeout values: */
- /* Timeout values for ADC operations are dependent to device clock */
- /* configuration (system clock versus ADC clock), */
- /* and therefore must be defined in user application. */
- /* Refer to @ref ADC_LL_EC_HW_DELAYS for description of ADC timeout */
- /* values definition. */
- /* Note: ADC timeout values are defined here in CPU cycles to be independent */
- /* of device clock setting. */
- /* In user application, ADC timeout values should be defined with */
- /* temporal values, in function of device clock settings. */
- /* Highest ratio CPU clock frequency vs ADC clock frequency: */
- /* - ADC clock from synchronous clock with AHB prescaler 512, */
- /* APB prescaler 16, ADC prescaler 4. */
- /* - ADC clock from asynchronous clock (HSI) with prescaler 1, */
- /* with highest ratio CPU clock frequency vs HSI clock frequency: */
- /* CPU clock frequency max 32MHz, HSI frequency 16MHz: ratio 2. */
- /* Unit: CPU cycles. */
- #define ADC_CLOCK_RATIO_VS_CPU_HIGHEST ((uint32_t) 512U * 16U * 4U)
- #define ADC_TIMEOUT_DISABLE_CPU_CYCLES (ADC_CLOCK_RATIO_VS_CPU_HIGHEST * 1U)
- #define ADC_TIMEOUT_STOP_CONVERSION_CPU_CYCLES (ADC_CLOCK_RATIO_VS_CPU_HIGHEST * 1U)
-
- /**
- * @}
- */
-
- /* Private macros ------------------------------------------------------------*/
-
- /** @addtogroup ADC_LL_Private_Macros
- * @{
- */
-
- /* Check of parameters for configuration of ADC hierarchical scope: */
- /* common to several ADC instances. */
- #define IS_LL_ADC_COMMON_CLOCK(__CLOCK__) \
- ( ((__CLOCK__) == LL_ADC_CLOCK_ASYNC_DIV1) \
- || ((__CLOCK__) == LL_ADC_CLOCK_ASYNC_DIV2) \
- || ((__CLOCK__) == LL_ADC_CLOCK_ASYNC_DIV4) \
- || ((__CLOCK__) == LL_ADC_CLOCK_ASYNC_DIV6) \
- || ((__CLOCK__) == LL_ADC_CLOCK_ASYNC_DIV8) \
- || ((__CLOCK__) == LL_ADC_CLOCK_ASYNC_DIV10) \
- || ((__CLOCK__) == LL_ADC_CLOCK_ASYNC_DIV12) \
- || ((__CLOCK__) == LL_ADC_CLOCK_ASYNC_DIV16) \
- || ((__CLOCK__) == LL_ADC_CLOCK_ASYNC_DIV32) \
- || ((__CLOCK__) == LL_ADC_CLOCK_ASYNC_DIV64) \
- || ((__CLOCK__) == LL_ADC_CLOCK_ASYNC_DIV128) \
- || ((__CLOCK__) == LL_ADC_CLOCK_ASYNC_DIV256) \
- )
-
- #define IS_LL_ADC_CLOCK_FREQ_MODE(__CLOCK_FREQ_MODE__) \
- ( ((__CLOCK_FREQ_MODE__) == LL_ADC_CLOCK_FREQ_MODE_HIGH) \
- || ((__CLOCK_FREQ_MODE__) == LL_ADC_CLOCK_FREQ_MODE_LOW) \
- )
-
- /* Check of parameters for configuration of ADC hierarchical scope: */
- /* ADC instance. */
- #define IS_LL_ADC_CLOCK(__CLOCK__) \
- ( ((__CLOCK__) == LL_ADC_CLOCK_SYNC_PCLK_DIV4) \
- || ((__CLOCK__) == LL_ADC_CLOCK_SYNC_PCLK_DIV2) \
- || ((__CLOCK__) == LL_ADC_CLOCK_SYNC_PCLK_DIV1) \
- || ((__CLOCK__) == LL_ADC_CLOCK_ASYNC) \
- )
-
- #define IS_LL_ADC_RESOLUTION(__RESOLUTION__) \
- ( ((__RESOLUTION__) == LL_ADC_RESOLUTION_12B) \
- || ((__RESOLUTION__) == LL_ADC_RESOLUTION_10B) \
- || ((__RESOLUTION__) == LL_ADC_RESOLUTION_8B) \
- || ((__RESOLUTION__) == LL_ADC_RESOLUTION_6B) \
- )
-
- #define IS_LL_ADC_DATA_ALIGN(__DATA_ALIGN__) \
- ( ((__DATA_ALIGN__) == LL_ADC_DATA_ALIGN_RIGHT) \
- || ((__DATA_ALIGN__) == LL_ADC_DATA_ALIGN_LEFT) \
- )
-
- #define IS_LL_ADC_LOW_POWER(__LOW_POWER__) \
- ( ((__LOW_POWER__) == LL_ADC_LP_MODE_NONE) \
- || ((__LOW_POWER__) == LL_ADC_LP_AUTOWAIT) \
- || ((__LOW_POWER__) == LL_ADC_LP_AUTOPOWEROFF) \
- || ((__LOW_POWER__) == LL_ADC_LP_AUTOWAIT_AUTOPOWEROFF) \
- )
-
- /* Check of parameters for configuration of ADC hierarchical scope: */
- /* ADC group regular */
- /* ADC group regular external trigger TIM2_CC3 available only on */
- /* STM32L0 devices categories: Cat.1, Cat.2, Cat.5 */
- #if defined (STM32L011xx) || defined (STM32L021xx) || \
- defined (STM32L031xx) || defined (STM32L041xx) || \
- defined (STM32L071xx) || defined (STM32L072xx) || defined (STM32L073xx) || \
- defined (STM32L081xx) || defined (STM32L082xx) || defined (STM32L083xx)
- #define IS_LL_ADC_REG_TRIG_SOURCE(__REG_TRIG_SOURCE__) \
- ( ((__REG_TRIG_SOURCE__) == LL_ADC_REG_TRIG_SOFTWARE) \
- || ((__REG_TRIG_SOURCE__) == LL_ADC_REG_TRIG_EXT_TIM6_TRGO) \
- || ((__REG_TRIG_SOURCE__) == LL_ADC_REG_TRIG_EXT_TIM21_CH2) \
- || ((__REG_TRIG_SOURCE__) == LL_ADC_REG_TRIG_EXT_TIM2_TRGO) \
- || ((__REG_TRIG_SOURCE__) == LL_ADC_REG_TRIG_EXT_TIM2_CH4) \
- || ((__REG_TRIG_SOURCE__) == LL_ADC_REG_TRIG_EXT_TIM22_TRGO) \
- || ((__REG_TRIG_SOURCE__) == LL_ADC_REG_TRIG_EXT_TIM2_CH3) \
- || ((__REG_TRIG_SOURCE__) == LL_ADC_REG_TRIG_EXT_TIM3_TRGO) \
- || ((__REG_TRIG_SOURCE__) == LL_ADC_REG_TRIG_EXT_EXTI_LINE11) \
- )
- #else
- #define IS_LL_ADC_REG_TRIG_SOURCE(__REG_TRIG_SOURCE__) \
- ( ((__REG_TRIG_SOURCE__) == LL_ADC_REG_TRIG_SOFTWARE) \
- || ((__REG_TRIG_SOURCE__) == LL_ADC_REG_TRIG_EXT_TIM6_TRGO) \
- || ((__REG_TRIG_SOURCE__) == LL_ADC_REG_TRIG_EXT_TIM21_CH2) \
- || ((__REG_TRIG_SOURCE__) == LL_ADC_REG_TRIG_EXT_TIM2_TRGO) \
- || ((__REG_TRIG_SOURCE__) == LL_ADC_REG_TRIG_EXT_TIM2_CH4) \
- || ((__REG_TRIG_SOURCE__) == LL_ADC_REG_TRIG_EXT_TIM22_TRGO) \
- || ((__REG_TRIG_SOURCE__) == LL_ADC_REG_TRIG_EXT_TIM3_TRGO) \
- || ((__REG_TRIG_SOURCE__) == LL_ADC_REG_TRIG_EXT_EXTI_LINE11) \
- )
- #endif
-
- #define IS_LL_ADC_REG_CONTINUOUS_MODE(__REG_CONTINUOUS_MODE__) \
- ( ((__REG_CONTINUOUS_MODE__) == LL_ADC_REG_CONV_SINGLE) \
- || ((__REG_CONTINUOUS_MODE__) == LL_ADC_REG_CONV_CONTINUOUS) \
- )
-
- #define IS_LL_ADC_REG_DMA_TRANSFER(__REG_DMA_TRANSFER__) \
- ( ((__REG_DMA_TRANSFER__) == LL_ADC_REG_DMA_TRANSFER_NONE) \
- || ((__REG_DMA_TRANSFER__) == LL_ADC_REG_DMA_TRANSFER_LIMITED) \
- || ((__REG_DMA_TRANSFER__) == LL_ADC_REG_DMA_TRANSFER_UNLIMITED) \
- )
-
- #define IS_LL_ADC_REG_OVR_DATA_BEHAVIOR(__REG_OVR_DATA_BEHAVIOR__) \
- ( ((__REG_OVR_DATA_BEHAVIOR__) == LL_ADC_REG_OVR_DATA_PRESERVED) \
- || ((__REG_OVR_DATA_BEHAVIOR__) == LL_ADC_REG_OVR_DATA_OVERWRITTEN) \
- )
-
- #define IS_LL_ADC_REG_SEQ_SCAN_DISCONT_MODE(__REG_SEQ_DISCONT_MODE__) \
- ( ((__REG_SEQ_DISCONT_MODE__) == LL_ADC_REG_SEQ_DISCONT_DISABLE) \
- || ((__REG_SEQ_DISCONT_MODE__) == LL_ADC_REG_SEQ_DISCONT_1RANK) \
- )
-
- /**
- * @}
- */
-
-
- /* Private function prototypes -----------------------------------------------*/
-
- /* Exported functions --------------------------------------------------------*/
- /** @addtogroup ADC_LL_Exported_Functions
- * @{
- */
-
- /** @addtogroup ADC_LL_EF_Init
- * @{
- */
-
- /**
- * @brief De-initialize registers of all ADC instances belonging to
- * the same ADC common instance to their default reset values.
- * @note This function is performing a hard reset, using high level
- * clock source RCC ADC reset.
- * @param ADCxy_COMMON ADC common instance
- * (can be set directly from CMSIS definition or by using helper macro @ref __LL_ADC_COMMON_INSTANCE() )
- * @retval An ErrorStatus enumeration value:
- * - SUCCESS: ADC common registers are de-initialized
- * - ERROR: not applicable
- */
- ErrorStatus LL_ADC_CommonDeInit(ADC_Common_TypeDef *ADCxy_COMMON)
- {
- /* Check the parameters */
- assert_param(IS_ADC_COMMON_INSTANCE(ADCxy_COMMON));
-
- /* Force reset of ADC clock (core clock) */
- LL_APB2_GRP1_ForceReset(LL_APB2_GRP1_PERIPH_ADC1);
-
- /* Release reset of ADC clock (core clock) */
- LL_APB2_GRP1_ReleaseReset(LL_APB2_GRP1_PERIPH_ADC1);
-
- return SUCCESS;
- }
-
- /**
- * @brief Initialize some features of ADC common parameters
- * (all ADC instances belonging to the same ADC common instance)
- * and multimode (for devices with several ADC instances available).
- * @note The setting of ADC common parameters is conditioned to
- * ADC instances state:
- * All ADC instances belonging to the same ADC common instance
- * must be disabled.
- * @param ADCxy_COMMON ADC common instance
- * (can be set directly from CMSIS definition or by using helper macro @ref __LL_ADC_COMMON_INSTANCE() )
- * @param ADC_CommonInitStruct Pointer to a @ref LL_ADC_CommonInitTypeDef structure
- * @retval An ErrorStatus enumeration value:
- * - SUCCESS: ADC common registers are initialized
- * - ERROR: ADC common registers are not initialized
- */
- ErrorStatus LL_ADC_CommonInit(ADC_Common_TypeDef *ADCxy_COMMON, LL_ADC_CommonInitTypeDef *ADC_CommonInitStruct)
- {
- ErrorStatus status = SUCCESS;
-
- /* Check the parameters */
- assert_param(IS_ADC_COMMON_INSTANCE(ADCxy_COMMON));
- assert_param(IS_LL_ADC_COMMON_CLOCK(ADC_CommonInitStruct->CommonClock));
-
- /* Note: Hardware constraint (refer to description of functions */
- /* "LL_ADC_SetCommonXXX()": */
- /* On this STM32 serie, setting of these features is conditioned to */
- /* ADC state: */
- /* All ADC instances of the ADC common group must be disabled. */
- if(__LL_ADC_IS_ENABLED_ALL_COMMON_INSTANCE(ADCxy_COMMON) == 0U)
- {
- /* Configuration of ADC hierarchical scope: */
- /* - common to several ADC */
- /* (all ADC instances belonging to the same ADC common instance) */
- /* - Set ADC clock (conversion clock) */
- LL_ADC_SetCommonClock(ADCxy_COMMON, ADC_CommonInitStruct->CommonClock);
- }
- else
- {
- /* Initialization error: One or several ADC instances belonging to */
- /* the same ADC common instance are not disabled. */
- status = ERROR;
- }
-
- return status;
- }
-
- /**
- * @brief Set each @ref LL_ADC_CommonInitTypeDef field to default value.
- * @param ADC_CommonInitStruct Pointer to a @ref LL_ADC_CommonInitTypeDef structure
- * whose fields will be set to default values.
- * @retval None
- */
- void LL_ADC_CommonStructInit(LL_ADC_CommonInitTypeDef *ADC_CommonInitStruct)
- {
- /* Set ADC_CommonInitStruct fields to default values */
- /* Set fields of ADC common */
- /* (all ADC instances belonging to the same ADC common instance) */
- ADC_CommonInitStruct->CommonClock = LL_ADC_CLOCK_ASYNC_DIV2;
-
- }
-
- /**
- * @brief De-initialize registers of the selected ADC instance
- * to their default reset values.
- * @note To reset all ADC instances quickly (perform a hard reset),
- * use function @ref LL_ADC_CommonDeInit().
- * @note If this functions returns error status, it means that ADC instance
- * is in an unknown state.
- * In this case, perform a hard reset using high level
- * clock source RCC ADC reset.
- * Refer to function @ref LL_ADC_CommonDeInit().
- * @param ADCx ADC instance
- * @retval An ErrorStatus enumeration value:
- * - SUCCESS: ADC registers are de-initialized
- * - ERROR: ADC registers are not de-initialized
- */
- ErrorStatus LL_ADC_DeInit(ADC_TypeDef *ADCx)
- {
- ErrorStatus status = SUCCESS;
-
- __IO uint32_t timeout_cpu_cycles = 0U;
-
- /* Check the parameters */
- assert_param(IS_ADC_ALL_INSTANCE(ADCx));
-
- /* Disable ADC instance if not already disabled. */
- if(LL_ADC_IsEnabled(ADCx) == 1U)
- {
- /* Set ADC group regular trigger source to SW start to ensure to not */
- /* have an external trigger event occurring during the conversion stop */
- /* ADC disable process. */
- LL_ADC_REG_SetTriggerSource(ADCx, LL_ADC_REG_TRIG_SOFTWARE);
-
- /* Stop potential ADC conversion on going on ADC group regular. */
- if(LL_ADC_REG_IsConversionOngoing(ADCx) != 0U)
- {
- if(LL_ADC_REG_IsStopConversionOngoing(ADCx) == 0U)
- {
- LL_ADC_REG_StopConversion(ADCx);
- }
- }
-
- /* Wait for ADC conversions are effectively stopped */
- timeout_cpu_cycles = ADC_TIMEOUT_STOP_CONVERSION_CPU_CYCLES;
- while (LL_ADC_REG_IsStopConversionOngoing(ADCx) == 1U)
- {
- if(timeout_cpu_cycles-- == 0U)
- {
- /* Time-out error */
- status = ERROR;
- }
- }
-
- /* Disable the ADC instance */
- LL_ADC_Disable(ADCx);
-
- /* Wait for ADC instance is effectively disabled */
- timeout_cpu_cycles = ADC_TIMEOUT_DISABLE_CPU_CYCLES;
- while (LL_ADC_IsDisableOngoing(ADCx) == 1U)
- {
- if(timeout_cpu_cycles-- == 0U)
- {
- /* Time-out error */
- status = ERROR;
- }
- }
- }
-
- /* Check whether ADC state is compliant with expected state */
- if(READ_BIT(ADCx->CR,
- ( ADC_CR_ADSTP | ADC_CR_ADSTART
- | ADC_CR_ADDIS | ADC_CR_ADEN )
- )
- == 0U)
- {
- /* ========== Reset ADC registers ========== */
- /* Reset register IER */
- CLEAR_BIT(ADCx->IER,
- ( LL_ADC_IT_ADRDY
- | LL_ADC_IT_EOC
- | LL_ADC_IT_EOS
- | LL_ADC_IT_OVR
- | LL_ADC_IT_EOSMP
- | LL_ADC_IT_AWD1 )
- );
-
- /* Reset register ISR */
- SET_BIT(ADCx->ISR,
- ( LL_ADC_FLAG_ADRDY
- | LL_ADC_FLAG_EOC
- | LL_ADC_FLAG_EOS
- | LL_ADC_FLAG_OVR
- | LL_ADC_FLAG_EOSMP
- | LL_ADC_FLAG_AWD1 )
- );
-
- /* Reset register CR */
- /* Bits ADC_CR_ADCAL, ADC_CR_ADSTP, ADC_CR_ADSTART are in access mode */
- /* "read-set": no direct reset applicable. */
- CLEAR_BIT(ADCx->CR, ADC_CR_ADVREGEN);
-
- /* Reset register CFGR1 */
- CLEAR_BIT(ADCx->CFGR1,
- ( ADC_CFGR1_AWDCH | ADC_CFGR1_AWDEN | ADC_CFGR1_AWDSGL | ADC_CFGR1_DISCEN
- | ADC_CFGR1_AUTOFF | ADC_CFGR1_WAIT | ADC_CFGR1_CONT | ADC_CFGR1_OVRMOD
- | ADC_CFGR1_EXTEN | ADC_CFGR1_EXTSEL | ADC_CFGR1_ALIGN | ADC_CFGR1_RES
- | ADC_CFGR1_SCANDIR | ADC_CFGR1_DMACFG | ADC_CFGR1_DMAEN )
- );
-
- /* Reset register CFGR2 */
- /* Note: Update of ADC clock mode is conditioned to ADC state disabled: */
- /* already done above. */
- CLEAR_BIT(ADCx->CFGR2,
- ( ADC_CFGR2_CKMODE
- | ADC_CFGR2_TOVS | ADC_CFGR2_OVSS | ADC_CFGR2_OVSR
- | ADC_CFGR2_OVSE | ADC_CFGR2_CKMODE )
- );
-
- /* Reset register SMPR */
- CLEAR_BIT(ADCx->SMPR, ADC_SMPR_SMP);
-
- /* Reset register TR */
- MODIFY_REG(ADCx->TR, ADC_TR_HT | ADC_TR_LT, ADC_TR_HT);
-
- /* Reset register CHSELR */
- #if defined(ADC_CCR_VLCDEN)
- CLEAR_BIT(ADCx->CHSELR,
- ( ADC_CHSELR_CHSEL18 | ADC_CHSELR_CHSEL17 | ADC_CHSELR_CHSEL16
- | ADC_CHSELR_CHSEL15 | ADC_CHSELR_CHSEL14 | ADC_CHSELR_CHSEL13 | ADC_CHSELR_CHSEL12
- | ADC_CHSELR_CHSEL11 | ADC_CHSELR_CHSEL10 | ADC_CHSELR_CHSEL9 | ADC_CHSELR_CHSEL8
- | ADC_CHSELR_CHSEL7 | ADC_CHSELR_CHSEL6 | ADC_CHSELR_CHSEL5 | ADC_CHSELR_CHSEL4
- | ADC_CHSELR_CHSEL3 | ADC_CHSELR_CHSEL2 | ADC_CHSELR_CHSEL1 | ADC_CHSELR_CHSEL0 )
- );
- #else
- CLEAR_BIT(ADCx->CHSELR,
- ( ADC_CHSELR_CHSEL18 | ADC_CHSELR_CHSEL17
- | ADC_CHSELR_CHSEL15 | ADC_CHSELR_CHSEL14 | ADC_CHSELR_CHSEL13 | ADC_CHSELR_CHSEL12
- | ADC_CHSELR_CHSEL11 | ADC_CHSELR_CHSEL10 | ADC_CHSELR_CHSEL9 | ADC_CHSELR_CHSEL8
- | ADC_CHSELR_CHSEL7 | ADC_CHSELR_CHSEL6 | ADC_CHSELR_CHSEL5 | ADC_CHSELR_CHSEL4
- | ADC_CHSELR_CHSEL3 | ADC_CHSELR_CHSEL2 | ADC_CHSELR_CHSEL1 | ADC_CHSELR_CHSEL0 )
- );
- #endif
-
- /* Reset register DR */
- /* bits in access mode read only, no direct reset applicable */
-
- /* Reset register CALFACT */
- CLEAR_BIT(ADCx->CALFACT, ADC_CALFACT_CALFACT);
-
- }
- else
- {
- /* ADC instance is in an unknown state */
- /* Need to performing a hard reset of ADC instance, using high level */
- /* clock source RCC ADC reset. */
- /* Caution: On this STM32 serie, if several ADC instances are available */
- /* on the selected device, RCC ADC reset will reset */
- /* all ADC instances belonging to the common ADC instance. */
- status = ERROR;
- }
-
- return status;
- }
-
- /**
- * @brief Initialize some features of ADC instance.
- * @note These parameters have an impact on ADC scope: ADC instance.
- * Refer to corresponding unitary functions into
- * @ref ADC_LL_EF_Configuration_ADC_Instance .
- * @note The setting of these parameters by function @ref LL_ADC_Init()
- * is conditioned to ADC state:
- * ADC instance must be disabled.
- * This condition is applied to all ADC features, for efficiency
- * and compatibility over all STM32 families. However, the different
- * features can be set under different ADC state conditions
- * (setting possible with ADC enabled without conversion on going,
- * ADC enabled with conversion on going, ...)
- * Each feature can be updated afterwards with a unitary function
- * and potentially with ADC in a different state than disabled,
- * refer to description of each function for setting
- * conditioned to ADC state.
- * @note After using this function, some other features must be configured
- * using LL unitary functions.
- * The minimum configuration remaining to be done is:
- * - Set ADC group regular sequencer:
- * map channel on rank corresponding to channel number.
- * Refer to function @ref LL_ADC_REG_SetSequencerChannels();
- * - Set ADC channel sampling time
- * Refer to function LL_ADC_SetChannelSamplingTime();
- * @param ADCx ADC instance
- * @param ADC_InitStruct Pointer to a @ref LL_ADC_REG_InitTypeDef structure
- * @retval An ErrorStatus enumeration value:
- * - SUCCESS: ADC registers are initialized
- * - ERROR: ADC registers are not initialized
- */
- ErrorStatus LL_ADC_Init(ADC_TypeDef *ADCx, LL_ADC_InitTypeDef *ADC_InitStruct)
- {
- ErrorStatus status = SUCCESS;
-
- /* Check the parameters */
- assert_param(IS_ADC_ALL_INSTANCE(ADCx));
-
- assert_param(IS_LL_ADC_CLOCK(ADC_InitStruct->Clock));
- assert_param(IS_LL_ADC_RESOLUTION(ADC_InitStruct->Resolution));
- assert_param(IS_LL_ADC_DATA_ALIGN(ADC_InitStruct->DataAlignment));
- assert_param(IS_LL_ADC_LOW_POWER(ADC_InitStruct->LowPowerMode));
-
- /* Note: Hardware constraint (refer to description of this function): */
- /* ADC instance must be disabled. */
- if(LL_ADC_IsEnabled(ADCx) == 0U)
- {
- /* Configuration of ADC hierarchical scope: */
- /* - ADC instance */
- /* - Set ADC data resolution */
- /* - Set ADC conversion data alignment */
- /* - Set ADC low power mode */
- MODIFY_REG(ADCx->CFGR1,
- ADC_CFGR1_RES
- | ADC_CFGR1_ALIGN
- | ADC_CFGR1_WAIT
- | ADC_CFGR1_AUTOFF
- ,
- ADC_InitStruct->Resolution
- | ADC_InitStruct->DataAlignment
- | ADC_InitStruct->LowPowerMode
- );
-
- MODIFY_REG(ADCx->CFGR2,
- ADC_CFGR2_CKMODE
- ,
- ADC_InitStruct->Clock
- );
- }
- else
- {
- /* Initialization error: ADC instance is not disabled. */
- status = ERROR;
- }
- return status;
- }
-
- /**
- * @brief Set each @ref LL_ADC_InitTypeDef field to default value.
- * @param ADC_InitStruct Pointer to a @ref LL_ADC_InitTypeDef structure
- * whose fields will be set to default values.
- * @retval None
- */
- void LL_ADC_StructInit(LL_ADC_InitTypeDef *ADC_InitStruct)
- {
- /* Set ADC_InitStruct fields to default values */
- /* Set fields of ADC instance */
- ADC_InitStruct->Clock = LL_ADC_CLOCK_SYNC_PCLK_DIV2;
- ADC_InitStruct->Resolution = LL_ADC_RESOLUTION_12B;
- ADC_InitStruct->DataAlignment = LL_ADC_DATA_ALIGN_RIGHT;
- ADC_InitStruct->LowPowerMode = LL_ADC_LP_MODE_NONE;
-
- }
-
- /**
- * @brief Initialize some features of ADC group regular.
- * @note These parameters have an impact on ADC scope: ADC group regular.
- * Refer to corresponding unitary functions into
- * @ref ADC_LL_EF_Configuration_ADC_Group_Regular
- * (functions with prefix "REG").
- * @note The setting of these parameters by function @ref LL_ADC_Init()
- * is conditioned to ADC state:
- * ADC instance must be disabled.
- * This condition is applied to all ADC features, for efficiency
- * and compatibility over all STM32 families. However, the different
- * features can be set under different ADC state conditions
- * (setting possible with ADC enabled without conversion on going,
- * ADC enabled with conversion on going, ...)
- * Each feature can be updated afterwards with a unitary function
- * and potentially with ADC in a different state than disabled,
- * refer to description of each function for setting
- * conditioned to ADC state.
- * @note After using this function, other features must be configured
- * using LL unitary functions.
- * The minimum configuration remaining to be done is:
- * - Set ADC group regular sequencer:
- * map channel on rank corresponding to channel number.
- * Refer to function @ref LL_ADC_REG_SetSequencerChannels();
- * - Set ADC channel sampling time
- * Refer to function LL_ADC_SetChannelSamplingTime();
- * @param ADCx ADC instance
- * @param ADC_REG_InitStruct Pointer to a @ref LL_ADC_REG_InitTypeDef structure
- * @retval An ErrorStatus enumeration value:
- * - SUCCESS: ADC registers are initialized
- * - ERROR: ADC registers are not initialized
- */
- ErrorStatus LL_ADC_REG_Init(ADC_TypeDef *ADCx, LL_ADC_REG_InitTypeDef *ADC_REG_InitStruct)
- {
- ErrorStatus status = SUCCESS;
-
- /* Check the parameters */
- assert_param(IS_ADC_ALL_INSTANCE(ADCx));
- assert_param(IS_LL_ADC_REG_TRIG_SOURCE(ADC_REG_InitStruct->TriggerSource));
- assert_param(IS_LL_ADC_REG_SEQ_SCAN_DISCONT_MODE(ADC_REG_InitStruct->SequencerDiscont));
- assert_param(IS_LL_ADC_REG_CONTINUOUS_MODE(ADC_REG_InitStruct->ContinuousMode));
- assert_param(IS_LL_ADC_REG_DMA_TRANSFER(ADC_REG_InitStruct->DMATransfer));
- assert_param(IS_LL_ADC_REG_OVR_DATA_BEHAVIOR(ADC_REG_InitStruct->Overrun));
-
- /* Note: Hardware constraint (refer to description of this function): */
- /* ADC instance must be disabled. */
- if(LL_ADC_IsEnabled(ADCx) == 0U)
- {
- /* Configuration of ADC hierarchical scope: */
- /* - ADC group regular */
- /* - Set ADC group regular trigger source */
- /* - Set ADC group regular sequencer discontinuous mode */
- /* - Set ADC group regular continuous mode */
- /* - Set ADC group regular conversion data transfer: no transfer or */
- /* transfer by DMA, and DMA requests mode */
- /* - Set ADC group regular overrun behavior */
- /* Note: On this STM32 serie, ADC trigger edge is set to value 0x0 by */
- /* setting of trigger source to SW start. */
- MODIFY_REG(ADCx->CFGR1,
- ADC_CFGR1_EXTSEL
- | ADC_CFGR1_EXTEN
- | ADC_CFGR1_DISCEN
- | ADC_CFGR1_CONT
- | ADC_CFGR1_DMAEN
- | ADC_CFGR1_DMACFG
- | ADC_CFGR1_OVRMOD
- ,
- ADC_REG_InitStruct->TriggerSource
- | ADC_REG_InitStruct->SequencerDiscont
- | ADC_REG_InitStruct->ContinuousMode
- | ADC_REG_InitStruct->DMATransfer
- | ADC_REG_InitStruct->Overrun
- );
-
- }
- else
- {
- /* Initialization error: ADC instance is not disabled. */
- status = ERROR;
- }
- return status;
- }
-
- /**
- * @brief Set each @ref LL_ADC_REG_InitTypeDef field to default value.
- * @param ADC_REG_InitStruct Pointer to a @ref LL_ADC_REG_InitTypeDef structure
- * whose fields will be set to default values.
- * @retval None
- */
- void LL_ADC_REG_StructInit(LL_ADC_REG_InitTypeDef *ADC_REG_InitStruct)
- {
- /* Set ADC_REG_InitStruct fields to default values */
- /* Set fields of ADC group regular */
- /* Note: On this STM32 serie, ADC trigger edge is set to value 0x0 by */
- /* setting of trigger source to SW start. */
- ADC_REG_InitStruct->TriggerSource = LL_ADC_REG_TRIG_SOFTWARE;
- ADC_REG_InitStruct->SequencerDiscont = LL_ADC_REG_SEQ_DISCONT_DISABLE;
- ADC_REG_InitStruct->ContinuousMode = LL_ADC_REG_CONV_SINGLE;
- ADC_REG_InitStruct->DMATransfer = LL_ADC_REG_DMA_TRANSFER_NONE;
- ADC_REG_InitStruct->Overrun = LL_ADC_REG_OVR_DATA_OVERWRITTEN;
- }
-
- /**
- * @}
- */
-
- /**
- * @}
- */
-
- /**
- * @}
- */
-
- #endif /* ADC1 */
-
- /**
- * @}
- */
-
- #endif /* USE_FULL_LL_DRIVER */
-
- /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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