diff options
Diffstat (limited to 'Drivers/STM32U0xx_HAL_Driver/Src/stm32u0xx_ll_adc.c')
| -rw-r--r-- | Drivers/STM32U0xx_HAL_Driver/Src/stm32u0xx_ll_adc.c | 749 |
1 files changed, 749 insertions, 0 deletions
diff --git a/Drivers/STM32U0xx_HAL_Driver/Src/stm32u0xx_ll_adc.c b/Drivers/STM32U0xx_HAL_Driver/Src/stm32u0xx_ll_adc.c new file mode 100644 index 0000000..c37d107 --- /dev/null +++ b/Drivers/STM32U0xx_HAL_Driver/Src/stm32u0xx_ll_adc.c @@ -0,0 +1,749 @@ +/** + ****************************************************************************** + * @file stm32u0xx_ll_adc.c + * @author MCD Application Team + * @brief ADC LL module driver + ****************************************************************************** + * @attention + * + * Copyright (c) 2023 STMicroelectronics. + * All rights reserved. + * + * This software is licensed under terms that can be found in the LICENSE file + * in the root directory of this software component. + * If no LICENSE file comes with this software, it is provided AS-IS. + * + ****************************************************************************** + */ +#if defined(USE_FULL_LL_DRIVER) + +/* Includes ------------------------------------------------------------------*/ +#include "stm32u0xx_ll_adc.h" +#include "stm32u0xx_ll_bus.h" + +#ifdef USE_FULL_ASSERT +#include "stm32_assert.h" +#else +#define assert_param(expr) ((void)0U) +#endif /* USE_FULL_ASSERT */ + +/** @addtogroup STM32U0xx_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 48MHz, HSI frequency 16MHz: ratio 4. */ +/* Unit: CPU cycles. */ +#define ADC_CLOCK_RATIO_VS_CPU_HIGHEST (512UL * 16UL * 4UL) +#define ADC_TIMEOUT_DISABLE_CPU_CYCLES (ADC_CLOCK_RATIO_VS_CPU_HIGHEST * 1UL) +#define ADC_TIMEOUT_STOP_CONVERSION_CPU_CYCLES (ADC_CLOCK_RATIO_VS_CPU_HIGHEST * 1UL) +/* Note: CCRDY handshake requires 1APB + 2 ADC + 3 APB cycles */ +/* after the channel configuration has been changed. */ +/* Driver timeout is approximated to 6 CPU cycles. */ +#define ADC_TIMEOUT_CCRDY_CPU_CYCLES (ADC_CLOCK_RATIO_VS_CPU_HIGHEST * 6UL) + +/** + * @} + */ + +/* 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 */ +#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_TIM1_TRGO2) \ + || ((__REG_TRIG_SOURCE__) == LL_ADC_REG_TRIG_EXT_TIM1_CH4 ) \ + || ((__REG_TRIG_SOURCE__) == LL_ADC_REG_TRIG_EXT_TIM2_TRGO) \ + || ((__REG_TRIG_SOURCE__) == LL_ADC_REG_TRIG_EXT_TIM3_TRGO) \ + || ((__REG_TRIG_SOURCE__) == LL_ADC_REG_TRIG_EXT_TIM15_TRGO) \ + || ((__REG_TRIG_SOURCE__) == LL_ADC_REG_TRIG_EXT_TIM6_TRGO) \ + || ((__REG_TRIG_SOURCE__) == LL_ADC_REG_TRIG_EXT_EXTI_LINE11) \ + ) + +#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_MODE(__REG_SEQ_MODE__) \ + (((__REG_SEQ_MODE__) == LL_ADC_REG_SEQ_FIXED) \ + || ((__REG_SEQ_MODE__) == LL_ADC_REG_SEQ_CONFIGURABLE) \ + ) + +#define IS_LL_ADC_REG_SEQ_SCAN_LENGTH(__REG_SEQ_SCAN_LENGTH__) \ + (((__REG_SEQ_SCAN_LENGTH__) == LL_ADC_REG_SEQ_SCAN_DISABLE) \ + || ((__REG_SEQ_SCAN_LENGTH__) == LL_ADC_REG_SEQ_SCAN_ENABLE_2RANKS) \ + || ((__REG_SEQ_SCAN_LENGTH__) == LL_ADC_REG_SEQ_SCAN_ENABLE_3RANKS) \ + || ((__REG_SEQ_SCAN_LENGTH__) == LL_ADC_REG_SEQ_SCAN_ENABLE_4RANKS) \ + || ((__REG_SEQ_SCAN_LENGTH__) == LL_ADC_REG_SEQ_SCAN_ENABLE_5RANKS) \ + || ((__REG_SEQ_SCAN_LENGTH__) == LL_ADC_REG_SEQ_SCAN_ENABLE_6RANKS) \ + || ((__REG_SEQ_SCAN_LENGTH__) == LL_ADC_REG_SEQ_SCAN_ENABLE_7RANKS) \ + || ((__REG_SEQ_SCAN_LENGTH__) == LL_ADC_REG_SEQ_SCAN_ENABLE_8RANKS) \ + ) + +#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)); + + /* Prevent unused argument(s) compilation warning if no assert_param check */ + (void)(ADCxy_COMMON); + + /* Force reset of ADC clock (core clock) */ + LL_APB1_GRP2_ForceReset(LL_APB1_GRP2_PERIPH_ADC); + + /* Release reset of ADC clock (core clock) */ + LL_APB1_GRP2_ReleaseReset(LL_APB1_GRP2_PERIPH_ADC); + + 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 pADC_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, const LL_ADC_CommonInitTypeDef *pADC_CommonInitStruct) +{ + ErrorStatus status = SUCCESS; + + /* Check the parameters */ + assert_param(IS_ADC_COMMON_INSTANCE(ADCxy_COMMON)); + assert_param(IS_LL_ADC_COMMON_CLOCK(pADC_CommonInitStruct->CommonClock)); + + /* Note: Hardware constraint (refer to description of functions */ + /* "LL_ADC_SetCommonXXX()": */ + /* On this STM32 series, 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) == 0UL) + { + /* 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, pADC_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 pADC_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 *pADC_CommonInitStruct) +{ + /* Set pADC_CommonInitStruct fields to default values */ + /* Set fields of ADC common */ + /* (all ADC instances belonging to the same ADC common instance) */ + pADC_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 = 0UL; + + /* Check the parameters */ + assert_param(IS_ADC_ALL_INSTANCE(ADCx)); + + /* Disable ADC instance if not already disabled. */ + if (LL_ADC_IsEnabled(ADCx) == 1UL) + { + /* Stop potential ADC conversion on going on ADC group regular. */ + 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) == 1UL) + { + timeout_cpu_cycles--; + if (timeout_cpu_cycles == 0UL) + { + /* Time-out error */ + status = ERROR; + break; + } + } + + /* 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) == 1UL) + { + timeout_cpu_cycles--; + if (timeout_cpu_cycles == 0UL) + { + /* Time-out error */ + status = ERROR; + break; + } + } + } + + /* 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) + ) + == 0UL) + { + /* ========== 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 + | LL_ADC_IT_AWD2 + | LL_ADC_IT_AWD3 + | LL_ADC_IT_EOCAL + | LL_ADC_IT_CCRDY + ) + ); + + /* 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 + | LL_ADC_FLAG_AWD2 + | LL_ADC_FLAG_AWD3 + | LL_ADC_FLAG_EOCAL + | LL_ADC_FLAG_CCRDY + ) + ); + + /* 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_AWD1CH | ADC_CFGR1_AWD1EN | ADC_CFGR1_AWD1SGL | ADC_CFGR1_DISCEN + | ADC_CFGR1_CHSELRMOD | 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 SMPR */ + CLEAR_BIT(ADCx->SMPR, ADC_SMPR_SMP1 | ADC_SMPR_SMP2 | ADC_SMPR_SMPSEL); + + /* Reset register CHSELR */ + CLEAR_BIT(ADCx->CHSELR, + (ADC_CHSELR_CHSEL19 | ADC_CHSELR_CHSEL18 | ADC_CHSELR_CHSEL17 | ADC_CHSELR_CHSEL16 + | ADC_CHSELR_CHSEL15 | ADC_CHSELR_CHSEL14 | ADC_CHSELR_CHSEL13 | ADC_CHSELR_CHSEL12 + | ADC_CHSELR_CHSEL11 | ADC_CHSELR_CHSEL10 | ADC_CHSELR_CHSEL9 | ADC_CHSELR_CHSEL8 + | ADC_CHSELR_CHSEL7 | ADC_CHSELR_CHSEL6 | ADC_CHSELR_CHSEL5 | ADC_CHSELR_CHSEL4 + | ADC_CHSELR_CHSEL3 | ADC_CHSELR_CHSEL2 | ADC_CHSELR_CHSEL1 | ADC_CHSELR_CHSEL0) + ); + + /* Reset register AWD1TR */ + MODIFY_REG(ADCx->AWD1TR, ADC_AWD1TR_HT1 | ADC_AWD1TR_LT1, ADC_AWD1TR_HT1); + + /* Reset register AWD2TR */ + MODIFY_REG(ADCx->AWD2TR, ADC_AWD2TR_HT2 | ADC_AWD2TR_LT2, ADC_AWD2TR_HT2); + + /* Reset register AWD3TR */ + MODIFY_REG(ADCx->AWD3TR, ADC_AWD3TR_HT3 | ADC_AWD3TR_LT3, ADC_AWD3TR_HT3); + + /* Wait for ADC channel configuration ready */ + timeout_cpu_cycles = ADC_TIMEOUT_CCRDY_CPU_CYCLES; + while (LL_ADC_IsActiveFlag_CCRDY(ADCx) == 0UL) + { + timeout_cpu_cycles--; + if (timeout_cpu_cycles == 0UL) + { + /* Time-out error */ + status = ERROR; + break; + } + } + + /* Clear flag ADC channel configuration ready */ + LL_ADC_ClearFlag_CCRDY(ADCx); + + /* Reset register DR */ + /* bits in access mode read only, no direct reset applicable */ + + /* Reset register CALFACT */ + CLEAR_BIT(ADCx->CALFACT, ADC_CALFACT_CALFACT); + + /* Reset register CFGR2 */ + /* Note: CFGR2 reset done at the end of de-initialization due to */ + /* clock source reset */ + /* 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) + ); + + } + 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 series, 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 series. 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: + * Depending on the sequencer mode (refer to + * function @ref LL_ADC_REG_SetSequencerConfigurable() ): + * - map channel on the selected sequencer rank. + * Refer to function @ref LL_ADC_REG_SetSequencerRanks(); + * - 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_SetSamplingTimeCommonChannels(); + * Refer to function LL_ADC_SetChannelSamplingTime(); + * @param ADCx ADC instance + * @param pADC_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, const LL_ADC_InitTypeDef *pADC_InitStruct) +{ + ErrorStatus status = SUCCESS; + + /* Check the parameters */ + assert_param(IS_ADC_ALL_INSTANCE(ADCx)); + + assert_param(IS_LL_ADC_CLOCK(pADC_InitStruct->Clock)); + assert_param(IS_LL_ADC_RESOLUTION(pADC_InitStruct->Resolution)); + assert_param(IS_LL_ADC_DATA_ALIGN(pADC_InitStruct->DataAlignment)); + assert_param(IS_LL_ADC_LOW_POWER(pADC_InitStruct->LowPowerMode)); + + /* Note: Hardware constraint (refer to description of this function): */ + /* ADC instance must be disabled. */ + if (LL_ADC_IsEnabled(ADCx) == 0UL) + { + /* 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 + , + pADC_InitStruct->Resolution + | pADC_InitStruct->DataAlignment + | pADC_InitStruct->LowPowerMode + ); + + MODIFY_REG(ADCx->CFGR2, + ADC_CFGR2_CKMODE + , + pADC_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 pADC_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 *pADC_InitStruct) +{ + /* Set pADC_InitStruct fields to default values */ + /* Set fields of ADC instance */ + pADC_InitStruct->Clock = LL_ADC_CLOCK_SYNC_PCLK_DIV2; + pADC_InitStruct->Resolution = LL_ADC_RESOLUTION_12B; + pADC_InitStruct->DataAlignment = LL_ADC_DATA_ALIGN_RIGHT; + pADC_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 series. 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 Before using this function, ADC group regular sequencer + * must be configured: refer to function + * @ref LL_ADC_REG_SetSequencerConfigurable(). + * @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: + * Depending on the sequencer mode (refer to + * function @ref LL_ADC_REG_SetSequencerConfigurable() ): + * - map channel on the selected sequencer rank. + * Refer to function @ref LL_ADC_REG_SetSequencerRanks(); + * - 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_SetSamplingTimeCommonChannels(); + * Refer to function LL_ADC_SetChannelSamplingTime(); + * @param ADCx ADC instance + * @param pADC_RegInitStruct 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, const LL_ADC_REG_InitTypeDef *pADC_RegInitStruct) +{ + ErrorStatus status = SUCCESS; + + /* Check the parameters */ + assert_param(IS_ADC_ALL_INSTANCE(ADCx)); + assert_param(IS_LL_ADC_REG_TRIG_SOURCE(pADC_RegInitStruct->TriggerSource)); + assert_param(IS_LL_ADC_REG_CONTINUOUS_MODE(pADC_RegInitStruct->ContinuousMode)); + assert_param(IS_LL_ADC_REG_DMA_TRANSFER(pADC_RegInitStruct->DMATransfer)); + assert_param(IS_LL_ADC_REG_OVR_DATA_BEHAVIOR(pADC_RegInitStruct->Overrun)); + + if (LL_ADC_REG_GetSequencerConfigurable(ADCx) != LL_ADC_REG_SEQ_FIXED) + { + assert_param(IS_LL_ADC_REG_SEQ_SCAN_LENGTH(pADC_RegInitStruct->SequencerLength)); + } + + if ((LL_ADC_REG_GetSequencerConfigurable(ADCx) == LL_ADC_REG_SEQ_FIXED) + || (pADC_RegInitStruct->SequencerLength != LL_ADC_REG_SEQ_SCAN_DISABLE) + ) + { + assert_param(IS_LL_ADC_REG_SEQ_SCAN_DISCONT_MODE(pADC_RegInitStruct->SequencerDiscont)); + + /* ADC group regular continuous mode and discontinuous mode */ + /* can not be enabled simultenaeously */ + assert_param((pADC_RegInitStruct->ContinuousMode == LL_ADC_REG_CONV_SINGLE) + || (pADC_RegInitStruct->SequencerDiscont == LL_ADC_REG_SEQ_DISCONT_DISABLE)); + } + + /* Note: Hardware constraint (refer to description of this function): */ + /* ADC instance must be disabled. */ + if (LL_ADC_IsEnabled(ADCx) == 0UL) + { + /* Configuration of ADC hierarchical scope: */ + /* - ADC group regular */ + /* - Set ADC group regular trigger source */ + /* - Set ADC group regular sequencer length */ + /* - 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 series, ADC trigger edge is set to value 0x0 by */ + /* setting of trigger source to SW start. */ + if ((LL_ADC_REG_GetSequencerConfigurable(ADCx) == LL_ADC_REG_SEQ_FIXED) + || (pADC_RegInitStruct->SequencerLength != LL_ADC_REG_SEQ_SCAN_DISABLE) + ) + { + /* Case of sequencer mode fixed + or sequencer length >= 2 ranks with sequencer mode fully configurable: + discontinuous mode configured */ + 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 + , + pADC_RegInitStruct->TriggerSource + | pADC_RegInitStruct->SequencerDiscont + | pADC_RegInitStruct->ContinuousMode + | pADC_RegInitStruct->DMATransfer + | pADC_RegInitStruct->Overrun + ); + } + else + { + /* Case of sequencer mode fully configurable + and sequencer length 1 rank (sequencer disabled): + discontinuous mode discarded (fixed to disable) */ + 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 + , + pADC_RegInitStruct->TriggerSource + | LL_ADC_REG_SEQ_DISCONT_DISABLE + | pADC_RegInitStruct->ContinuousMode + | pADC_RegInitStruct->DMATransfer + | pADC_RegInitStruct->Overrun + ); + } + + /* Set ADC group regular sequencer length */ + if (LL_ADC_REG_GetSequencerConfigurable(ADCx) != LL_ADC_REG_SEQ_FIXED) + { + LL_ADC_REG_SetSequencerLength(ADCx, pADC_RegInitStruct->SequencerLength); + } + } + 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 pADC_RegInitStruct 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 *pADC_RegInitStruct) +{ + /* Set pADC_RegInitStruct fields to default values */ + /* Set fields of ADC group regular */ + /* Note: On this STM32 series, ADC trigger edge is set to value 0x0 by */ + /* setting of trigger source to SW start. */ + pADC_RegInitStruct->TriggerSource = LL_ADC_REG_TRIG_SOFTWARE; + pADC_RegInitStruct->SequencerLength = LL_ADC_REG_SEQ_SCAN_DISABLE; + pADC_RegInitStruct->SequencerDiscont = LL_ADC_REG_SEQ_DISCONT_DISABLE; + pADC_RegInitStruct->ContinuousMode = LL_ADC_REG_CONV_SINGLE; + pADC_RegInitStruct->DMATransfer = LL_ADC_REG_DMA_TRANSFER_NONE; + pADC_RegInitStruct->Overrun = LL_ADC_REG_OVR_DATA_OVERWRITTEN; +} + +/** + * @} + */ + +/** + * @} + */ + +/** + * @} + */ + +#endif /* ADC1 */ + +/** + * @} + */ + +#endif /* USE_FULL_LL_DRIVER */ |