/** ****************************************************************************** * @file stm32l4xx_ll_adc.c * @author MCD Application Team * @brief ADC LL module driver ****************************************************************************** * @attention * *

© COPYRIGHT(c) 2017 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. * ****************************************************************************** */ #if defined(USE_FULL_LL_DRIVER) /* Includes ------------------------------------------------------------------*/ #include "stm32l4xx_ll_adc.h" #include "stm32l4xx_ll_bus.h" #ifdef USE_FULL_ASSERT #include "stm32_assert.h" #else #define assert_param(expr) ((void)0U) #endif /** @addtogroup STM32L4xx_LL_Driver * @{ */ #if defined (ADC1) || defined (ADC2) || defined (ADC3) /** @addtogroup ADC_LL ADC * @{ */ /* Private types -------------------------------------------------------------*/ /* Private variables ---------------------------------------------------------*/ /* Private constants ---------------------------------------------------------*/ /** @addtogroup ADC_LL_Private_Constants * @{ */ /* Definitions of ADC hardware constraints delays */ /* Note: Only ADC IP 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 (PLLSAI) with prescaler 1, */ /* with highest ratio CPU clock frequency vs HSI clock frequency: */ /* CPU clock frequency max 72MHz, PLLSAI freq min 26MHz: ratio 4. */ /* 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_SYNC_PCLK_DIV1) \ || ((__CLOCK__) == LL_ADC_CLOCK_SYNC_PCLK_DIV2) \ || ((__CLOCK__) == LL_ADC_CLOCK_SYNC_PCLK_DIV4) \ || ((__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) \ ) /* Check of parameters for configuration of ADC hierarchical scope: */ /* ADC instance. */ #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) \ ) /* 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_TRGO) \ || ((__REG_TRIG_SOURCE__) == LL_ADC_REG_TRIG_EXT_TIM1_TRGO2) \ || ((__REG_TRIG_SOURCE__) == LL_ADC_REG_TRIG_EXT_TIM1_CH1) \ || ((__REG_TRIG_SOURCE__) == LL_ADC_REG_TRIG_EXT_TIM1_CH2) \ || ((__REG_TRIG_SOURCE__) == LL_ADC_REG_TRIG_EXT_TIM1_CH3) \ || ((__REG_TRIG_SOURCE__) == LL_ADC_REG_TRIG_EXT_TIM2_TRGO) \ || ((__REG_TRIG_SOURCE__) == LL_ADC_REG_TRIG_EXT_TIM2_CH2) \ || ((__REG_TRIG_SOURCE__) == LL_ADC_REG_TRIG_EXT_TIM3_TRGO) \ || ((__REG_TRIG_SOURCE__) == LL_ADC_REG_TRIG_EXT_TIM3_CH4) \ || ((__REG_TRIG_SOURCE__) == LL_ADC_REG_TRIG_EXT_TIM4_TRGO) \ || ((__REG_TRIG_SOURCE__) == LL_ADC_REG_TRIG_EXT_TIM4_CH4) \ || ((__REG_TRIG_SOURCE__) == LL_ADC_REG_TRIG_EXT_TIM6_TRGO) \ || ((__REG_TRIG_SOURCE__) == LL_ADC_REG_TRIG_EXT_TIM8_TRGO) \ || ((__REG_TRIG_SOURCE__) == LL_ADC_REG_TRIG_EXT_TIM8_TRGO2) \ || ((__REG_TRIG_SOURCE__) == LL_ADC_REG_TRIG_EXT_TIM15_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_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) \ || ((__REG_SEQ_SCAN_LENGTH__) == LL_ADC_REG_SEQ_SCAN_ENABLE_9RANKS) \ || ((__REG_SEQ_SCAN_LENGTH__) == LL_ADC_REG_SEQ_SCAN_ENABLE_10RANKS) \ || ((__REG_SEQ_SCAN_LENGTH__) == LL_ADC_REG_SEQ_SCAN_ENABLE_11RANKS) \ || ((__REG_SEQ_SCAN_LENGTH__) == LL_ADC_REG_SEQ_SCAN_ENABLE_12RANKS) \ || ((__REG_SEQ_SCAN_LENGTH__) == LL_ADC_REG_SEQ_SCAN_ENABLE_13RANKS) \ || ((__REG_SEQ_SCAN_LENGTH__) == LL_ADC_REG_SEQ_SCAN_ENABLE_14RANKS) \ || ((__REG_SEQ_SCAN_LENGTH__) == LL_ADC_REG_SEQ_SCAN_ENABLE_15RANKS) \ || ((__REG_SEQ_SCAN_LENGTH__) == LL_ADC_REG_SEQ_SCAN_ENABLE_16RANKS) \ ) #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) \ || ((__REG_SEQ_DISCONT_MODE__) == LL_ADC_REG_SEQ_DISCONT_2RANKS) \ || ((__REG_SEQ_DISCONT_MODE__) == LL_ADC_REG_SEQ_DISCONT_3RANKS) \ || ((__REG_SEQ_DISCONT_MODE__) == LL_ADC_REG_SEQ_DISCONT_4RANKS) \ || ((__REG_SEQ_DISCONT_MODE__) == LL_ADC_REG_SEQ_DISCONT_5RANKS) \ || ((__REG_SEQ_DISCONT_MODE__) == LL_ADC_REG_SEQ_DISCONT_6RANKS) \ || ((__REG_SEQ_DISCONT_MODE__) == LL_ADC_REG_SEQ_DISCONT_7RANKS) \ || ((__REG_SEQ_DISCONT_MODE__) == LL_ADC_REG_SEQ_DISCONT_8RANKS) \ ) /* Check of parameters for configuration of ADC hierarchical scope: */ /* ADC group injected */ #define IS_LL_ADC_INJ_TRIG_SOURCE(__INJ_TRIG_SOURCE__) \ ( ((__INJ_TRIG_SOURCE__) == LL_ADC_INJ_TRIG_SOFTWARE) \ || ((__INJ_TRIG_SOURCE__) == LL_ADC_INJ_TRIG_EXT_TIM1_TRGO) \ || ((__INJ_TRIG_SOURCE__) == LL_ADC_INJ_TRIG_EXT_TIM1_TRGO2) \ || ((__INJ_TRIG_SOURCE__) == LL_ADC_INJ_TRIG_EXT_TIM1_CH4) \ || ((__INJ_TRIG_SOURCE__) == LL_ADC_INJ_TRIG_EXT_TIM2_TRGO) \ || ((__INJ_TRIG_SOURCE__) == LL_ADC_INJ_TRIG_EXT_TIM2_CH1) \ || ((__INJ_TRIG_SOURCE__) == LL_ADC_INJ_TRIG_EXT_TIM3_TRGO) \ || ((__INJ_TRIG_SOURCE__) == LL_ADC_INJ_TRIG_EXT_TIM3_CH1) \ || ((__INJ_TRIG_SOURCE__) == LL_ADC_INJ_TRIG_EXT_TIM3_CH3) \ || ((__INJ_TRIG_SOURCE__) == LL_ADC_INJ_TRIG_EXT_TIM3_CH4) \ || ((__INJ_TRIG_SOURCE__) == LL_ADC_INJ_TRIG_EXT_TIM4_TRGO) \ || ((__INJ_TRIG_SOURCE__) == LL_ADC_INJ_TRIG_EXT_TIM6_TRGO) \ || ((__INJ_TRIG_SOURCE__) == LL_ADC_INJ_TRIG_EXT_TIM8_CH4) \ || ((__INJ_TRIG_SOURCE__) == LL_ADC_INJ_TRIG_EXT_TIM8_TRGO) \ || ((__INJ_TRIG_SOURCE__) == LL_ADC_INJ_TRIG_EXT_TIM8_TRGO2) \ || ((__INJ_TRIG_SOURCE__) == LL_ADC_INJ_TRIG_EXT_TIM15_TRGO) \ || ((__INJ_TRIG_SOURCE__) == LL_ADC_INJ_TRIG_EXT_EXTI_LINE15) \ ) #define IS_LL_ADC_INJ_TRIG_EXT_EDGE(__INJ_TRIG_EXT_EDGE__) \ ( ((__INJ_TRIG_EXT_EDGE__) == LL_ADC_INJ_TRIG_EXT_RISING) \ || ((__INJ_TRIG_EXT_EDGE__) == LL_ADC_INJ_TRIG_EXT_FALLING) \ || ((__INJ_TRIG_EXT_EDGE__) == LL_ADC_INJ_TRIG_EXT_RISINGFALLING) \ ) #define IS_LL_ADC_INJ_TRIG_AUTO(__INJ_TRIG_AUTO__) \ ( ((__INJ_TRIG_AUTO__) == LL_ADC_INJ_TRIG_INDEPENDENT) \ || ((__INJ_TRIG_AUTO__) == LL_ADC_INJ_TRIG_FROM_GRP_REGULAR) \ ) #define IS_LL_ADC_INJ_SEQ_SCAN_LENGTH(__INJ_SEQ_SCAN_LENGTH__) \ ( ((__INJ_SEQ_SCAN_LENGTH__) == LL_ADC_INJ_SEQ_SCAN_DISABLE) \ || ((__INJ_SEQ_SCAN_LENGTH__) == LL_ADC_INJ_SEQ_SCAN_ENABLE_2RANKS) \ || ((__INJ_SEQ_SCAN_LENGTH__) == LL_ADC_INJ_SEQ_SCAN_ENABLE_3RANKS) \ || ((__INJ_SEQ_SCAN_LENGTH__) == LL_ADC_INJ_SEQ_SCAN_ENABLE_4RANKS) \ ) #define IS_LL_ADC_INJ_SEQ_SCAN_DISCONT_MODE(__INJ_SEQ_DISCONT_MODE__) \ ( ((__INJ_SEQ_DISCONT_MODE__) == LL_ADC_INJ_SEQ_DISCONT_DISABLE) \ || ((__INJ_SEQ_DISCONT_MODE__) == LL_ADC_INJ_SEQ_DISCONT_1RANK) \ ) #if defined(ADC_MULTIMODE_SUPPORT) /* Check of parameters for configuration of ADC hierarchical scope: */ /* multimode. */ #define IS_LL_ADC_MULTI_MODE(__MULTI_MODE__) \ ( ((__MULTI_MODE__) == LL_ADC_MULTI_INDEPENDENT) \ || ((__MULTI_MODE__) == LL_ADC_MULTI_DUAL_REG_SIMULT) \ || ((__MULTI_MODE__) == LL_ADC_MULTI_DUAL_REG_INTERL) \ || ((__MULTI_MODE__) == LL_ADC_MULTI_DUAL_INJ_SIMULT) \ || ((__MULTI_MODE__) == LL_ADC_MULTI_DUAL_INJ_ALTERN) \ || ((__MULTI_MODE__) == LL_ADC_MULTI_DUAL_REG_SIM_INJ_SIM) \ || ((__MULTI_MODE__) == LL_ADC_MULTI_DUAL_REG_SIM_INJ_ALT) \ || ((__MULTI_MODE__) == LL_ADC_MULTI_DUAL_REG_INT_INJ_SIM) \ ) #define IS_LL_ADC_MULTI_DMA_TRANSFER(__MULTI_DMA_TRANSFER__) \ ( ((__MULTI_DMA_TRANSFER__) == LL_ADC_MULTI_REG_DMA_EACH_ADC) \ || ((__MULTI_DMA_TRANSFER__) == LL_ADC_MULTI_REG_DMA_LIMIT_RES12_10B) \ || ((__MULTI_DMA_TRANSFER__) == LL_ADC_MULTI_REG_DMA_LIMIT_RES8_6B) \ || ((__MULTI_DMA_TRANSFER__) == LL_ADC_MULTI_REG_DMA_UNLMT_RES12_10B) \ || ((__MULTI_DMA_TRANSFER__) == LL_ADC_MULTI_REG_DMA_UNLMT_RES8_6B) \ ) #define IS_LL_ADC_MULTI_TWOSMP_DELAY(__MULTI_TWOSMP_DELAY__) \ ( ((__MULTI_TWOSMP_DELAY__) == LL_ADC_MULTI_TWOSMP_DELAY_1CYCLE) \ || ((__MULTI_TWOSMP_DELAY__) == LL_ADC_MULTI_TWOSMP_DELAY_2CYCLES) \ || ((__MULTI_TWOSMP_DELAY__) == LL_ADC_MULTI_TWOSMP_DELAY_3CYCLES) \ || ((__MULTI_TWOSMP_DELAY__) == LL_ADC_MULTI_TWOSMP_DELAY_4CYCLES) \ || ((__MULTI_TWOSMP_DELAY__) == LL_ADC_MULTI_TWOSMP_DELAY_5CYCLES) \ || ((__MULTI_TWOSMP_DELAY__) == LL_ADC_MULTI_TWOSMP_DELAY_6CYCLES) \ || ((__MULTI_TWOSMP_DELAY__) == LL_ADC_MULTI_TWOSMP_DELAY_7CYCLES) \ || ((__MULTI_TWOSMP_DELAY__) == LL_ADC_MULTI_TWOSMP_DELAY_8CYCLES) \ || ((__MULTI_TWOSMP_DELAY__) == LL_ADC_MULTI_TWOSMP_DELAY_9CYCLES) \ || ((__MULTI_TWOSMP_DELAY__) == LL_ADC_MULTI_TWOSMP_DELAY_10CYCLES) \ || ((__MULTI_TWOSMP_DELAY__) == LL_ADC_MULTI_TWOSMP_DELAY_11CYCLES) \ || ((__MULTI_TWOSMP_DELAY__) == LL_ADC_MULTI_TWOSMP_DELAY_12CYCLES) \ ) #define IS_LL_ADC_MULTI_MASTER_SLAVE(__MULTI_MASTER_SLAVE__) \ ( ((__MULTI_MASTER_SLAVE__) == LL_ADC_MULTI_MASTER) \ || ((__MULTI_MASTER_SLAVE__) == LL_ADC_MULTI_SLAVE) \ || ((__MULTI_MASTER_SLAVE__) == LL_ADC_MULTI_MASTER_SLAVE) \ ) #endif /* ADC_MULTIMODE_SUPPORT */ /** * @} */ /* 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. * 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. * To de-initialize only 1 ADC instance, use * function @ref LL_ADC_DeInit(). * @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_AHB2_GRP1_ForceReset(LL_AHB2_GRP1_PERIPH_ADC); /* Release reset of ADC clock (core clock) */ LL_AHB2_GRP1_ReleaseReset(LL_AHB2_GRP1_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 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)); #if defined(ADC_MULTIMODE_SUPPORT) assert_param(IS_LL_ADC_MULTI_MODE(ADC_CommonInitStruct->Multimode)); if(ADC_CommonInitStruct->Multimode != LL_ADC_MULTI_INDEPENDENT) { assert_param(IS_LL_ADC_MULTI_DMA_TRANSFER(ADC_CommonInitStruct->MultiDMATransfer)); assert_param(IS_LL_ADC_MULTI_TWOSMP_DELAY(ADC_CommonInitStruct->MultiTwoSamplingDelay)); } #endif /* ADC_MULTIMODE_SUPPORT */ /* Note: Hardware constraint (refer to description of functions */ /* "LL_ADC_SetCommonXXX()" and "LL_ADC_SetMultiXXX()"): */ /* 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) */ /* - multimode (if several ADC instances available on the */ /* selected device) */ /* - Set ADC multimode configuration */ /* - Set ADC multimode DMA transfer */ /* - Set ADC multimode: delay between 2 sampling phases */ #if defined(ADC_MULTIMODE_SUPPORT) if(ADC_CommonInitStruct->Multimode != LL_ADC_MULTI_INDEPENDENT) { MODIFY_REG(ADCxy_COMMON->CCR, ADC_CCR_CKMODE | ADC_CCR_PRESC | ADC_CCR_DUAL | ADC_CCR_MDMA | ADC_CCR_DELAY , ADC_CommonInitStruct->CommonClock | ADC_CommonInitStruct->Multimode | ADC_CommonInitStruct->MultiDMATransfer | ADC_CommonInitStruct->MultiTwoSamplingDelay ); } else { MODIFY_REG(ADCxy_COMMON->CCR, ADC_CCR_CKMODE | ADC_CCR_PRESC | ADC_CCR_DUAL | ADC_CCR_MDMA | ADC_CCR_DELAY , ADC_CommonInitStruct->CommonClock | LL_ADC_MULTI_INDEPENDENT ); } #else LL_ADC_SetCommonClock(ADCxy_COMMON, ADC_CommonInitStruct->CommonClock); #endif } 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_SYNC_PCLK_DIV2; #if defined(ADC_MULTIMODE_SUPPORT) /* Set fields of ADC multimode */ ADC_CommonInitStruct->Multimode = LL_ADC_MULTI_INDEPENDENT; ADC_CommonInitStruct->MultiDMATransfer = LL_ADC_MULTI_REG_DMA_EACH_ADC; ADC_CommonInitStruct->MultiTwoSamplingDelay = LL_ADC_MULTI_TWOSMP_DELAY_1CYCLE; #endif /* ADC_MULTIMODE_SUPPORT */ } /** * @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. * 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. * 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); } } /* Set ADC group injected trigger source to SW start to ensure to not */ /* have an external trigger event occurring during the conversion stop */ /* ADC disable process. */ LL_ADC_INJ_SetTriggerSource(ADCx, LL_ADC_INJ_TRIG_SOFTWARE); /* Stop potential ADC conversion on going on ADC group injected. */ if(LL_ADC_INJ_IsConversionOngoing(ADCx) != 0U) { if(LL_ADC_INJ_IsStopConversionOngoing(ADCx) == 0U) { LL_ADC_INJ_StopConversion(ADCx); } } /* Wait for ADC conversions are effectively stopped */ timeout_cpu_cycles = ADC_TIMEOUT_STOP_CONVERSION_CPU_CYCLES; while (( LL_ADC_REG_IsStopConversionOngoing(ADCx) | LL_ADC_INJ_IsStopConversionOngoing(ADCx)) == 1U) { if(timeout_cpu_cycles-- == 0U) { /* Time-out error */ status = ERROR; } } /* Flush group injected contexts queue (register JSQR): */ /* Note: Bit JQM must be set to empty the contexts queue (otherwise */ /* contexts queue is maintained with the last active context). */ LL_ADC_INJ_SetQueueMode(ADCx, LL_ADC_INJ_QUEUE_2CONTEXTS_END_EMPTY); /* 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_JADSTP | ADC_CR_ADSTP | ADC_CR_JADSTART | 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_JEOC | LL_ADC_IT_JEOS | LL_ADC_IT_JQOVF | LL_ADC_IT_AWD1 | LL_ADC_IT_AWD2 | LL_ADC_IT_AWD3 ) ); /* 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_JEOC | LL_ADC_FLAG_JEOS | LL_ADC_FLAG_JQOVF | LL_ADC_FLAG_AWD1 | LL_ADC_FLAG_AWD2 | LL_ADC_FLAG_AWD3 ) ); /* Reset register CR */ /* - Bits ADC_CR_JADSTP, ADC_CR_ADSTP, ADC_CR_JADSTART, ADC_CR_ADSTART, */ /* ADC_CR_ADCAL, ADC_CR_ADDIS, ADC_CR_ADEN are in */ /* access mode "read-set": no direct reset applicable. */ /* - Reset Calibration mode to default setting (single ended). */ /* - Disable ADC internal voltage regulator. */ /* - Enable ADC deep power down. */ /* Note: ADC internal voltage regulator disable and ADC deep power */ /* down enable are conditioned to ADC state disabled: */ /* already done above. */ CLEAR_BIT(ADCx->CR, ADC_CR_ADVREGEN | ADC_CR_ADCALDIF); SET_BIT(ADCx->CR, ADC_CR_DEEPPWD); /* Reset register CFGR */ MODIFY_REG(ADCx->CFGR, ( ADC_CFGR_AWD1CH | ADC_CFGR_JAUTO | ADC_CFGR_JAWD1EN | ADC_CFGR_AWD1EN | ADC_CFGR_AWD1SGL | ADC_CFGR_JQM | ADC_CFGR_JDISCEN | ADC_CFGR_DISCNUM | ADC_CFGR_DISCEN | ADC_CFGR_AUTDLY | ADC_CFGR_CONT | ADC_CFGR_OVRMOD | ADC_CFGR_EXTEN | ADC_CFGR_EXTSEL | ADC_CFGR_ALIGN | ADC_CFGR_RES | ADC_CFGR_DMACFG | ADC_CFGR_DMAEN ), ADC_CFGR_JQDIS ); /* Reset register CFGR2 */ CLEAR_BIT(ADCx->CFGR2, ( ADC_CFGR2_ROVSM | ADC_CFGR2_TROVS | ADC_CFGR2_OVSS | ADC_CFGR2_OVSR | ADC_CFGR2_JOVSE | ADC_CFGR2_ROVSE) ); /* Reset register SMPR1 */ CLEAR_BIT(ADCx->SMPR1, ( ADC_SMPR1_SMP9 | ADC_SMPR1_SMP8 | ADC_SMPR1_SMP7 | ADC_SMPR1_SMP6 | ADC_SMPR1_SMP5 | ADC_SMPR1_SMP4 | ADC_SMPR1_SMP3 | ADC_SMPR1_SMP2 | ADC_SMPR1_SMP1) ); /* Reset register SMPR2 */ CLEAR_BIT(ADCx->SMPR2, ( ADC_SMPR2_SMP18 | ADC_SMPR2_SMP17 | ADC_SMPR2_SMP16 | ADC_SMPR2_SMP15 | ADC_SMPR2_SMP14 | ADC_SMPR2_SMP13 | ADC_SMPR2_SMP12 | ADC_SMPR2_SMP11 | ADC_SMPR2_SMP10) ); /* Reset register TR1 */ MODIFY_REG(ADCx->TR1, ADC_TR1_HT1 | ADC_TR1_LT1, ADC_TR1_HT1); /* Reset register TR2 */ MODIFY_REG(ADCx->TR2, ADC_TR2_HT2 | ADC_TR2_LT2, ADC_TR2_HT2); /* Reset register TR3 */ MODIFY_REG(ADCx->TR3, ADC_TR3_HT3 | ADC_TR3_LT3, ADC_TR3_HT3); /* Reset register SQR1 */ CLEAR_BIT(ADCx->SQR1, ( ADC_SQR1_SQ4 | ADC_SQR1_SQ3 | ADC_SQR1_SQ2 | ADC_SQR1_SQ1 | ADC_SQR1_L) ); /* Reset register SQR2 */ CLEAR_BIT(ADCx->SQR2, ( ADC_SQR2_SQ9 | ADC_SQR2_SQ8 | ADC_SQR2_SQ7 | ADC_SQR2_SQ6 | ADC_SQR2_SQ5) ); /* Reset register SQR3 */ CLEAR_BIT(ADCx->SQR3, ( ADC_SQR3_SQ14 | ADC_SQR3_SQ13 | ADC_SQR3_SQ12 | ADC_SQR3_SQ11 | ADC_SQR3_SQ10) ); /* Reset register SQR4 */ CLEAR_BIT(ADCx->SQR4, ADC_SQR4_SQ16 | ADC_SQR4_SQ15); /* Reset register JSQR */ CLEAR_BIT(ADCx->JSQR, ( ADC_JSQR_JL | ADC_JSQR_JEXTSEL | ADC_JSQR_JEXTEN | ADC_JSQR_JSQ4 | ADC_JSQR_JSQ3 | ADC_JSQR_JSQ2 | ADC_JSQR_JSQ1 ) ); /* Reset register DR */ /* Note: bits in access mode read only, no direct reset applicable */ /* Reset register OFR1 */ CLEAR_BIT(ADCx->OFR1, ADC_OFR1_OFFSET1_EN | ADC_OFR1_OFFSET1_CH | ADC_OFR1_OFFSET1); /* Reset register OFR2 */ CLEAR_BIT(ADCx->OFR2, ADC_OFR2_OFFSET2_EN | ADC_OFR2_OFFSET2_CH | ADC_OFR2_OFFSET2); /* Reset register OFR3 */ CLEAR_BIT(ADCx->OFR3, ADC_OFR3_OFFSET3_EN | ADC_OFR3_OFFSET3_CH | ADC_OFR3_OFFSET3); /* Reset register OFR4 */ CLEAR_BIT(ADCx->OFR4, ADC_OFR4_OFFSET4_EN | ADC_OFR4_OFFSET4_CH | ADC_OFR4_OFFSET4); /* Reset registers JDR1, JDR2, JDR3, JDR4 */ /* Note: bits in access mode read only, no direct reset applicable */ /* Reset register AWD2CR */ CLEAR_BIT(ADCx->AWD2CR, ADC_AWD2CR_AWD2CH); /* Reset register AWD3CR */ CLEAR_BIT(ADCx->AWD3CR, ADC_AWD3CR_AWD3CH); /* Reset register DIFSEL */ CLEAR_BIT(ADCx->DIFSEL, ADC_DIFSEL_DIFSEL); /* Reset register CALFACT */ CLEAR_BIT(ADCx->CALFACT, ADC_CALFACT_CALFACT_D | ADC_CALFACT_CALFACT_S); } 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. */ /* 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. * Affects both group regular and group injected (availability * of ADC group injected depends on STM32 families). * 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 or group injected sequencer: * map channel on the selected sequencer rank. * Refer to function @ref LL_ADC_REG_SetSequencerRanks(). * - 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_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->CFGR, ADC_CFGR_RES | ADC_CFGR_ALIGN | ADC_CFGR_AUTDLY , ADC_InitStruct->Resolution | ADC_InitStruct->DataAlignment | ADC_InitStruct->LowPowerMode ); } 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->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 or group injected sequencer: * map channel on the selected sequencer rank. * Refer to function @ref LL_ADC_REG_SetSequencerRanks(). * - 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_LENGTH(ADC_REG_InitStruct->SequencerLength)); if(ADC_REG_InitStruct->SequencerLength != LL_ADC_REG_SEQ_SCAN_DISABLE) { 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 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 serie, ADC trigger edge is set to value 0x0 by */ /* setting of trigger source to SW start. */ if(ADC_REG_InitStruct->SequencerLength != LL_ADC_REG_SEQ_SCAN_DISABLE) { MODIFY_REG(ADCx->CFGR, ADC_CFGR_EXTSEL | ADC_CFGR_EXTEN | ADC_CFGR_DISCEN | ADC_CFGR_DISCNUM | ADC_CFGR_CONT | ADC_CFGR_DMAEN | ADC_CFGR_DMACFG | ADC_CFGR_OVRMOD , ADC_REG_InitStruct->TriggerSource | ADC_REG_InitStruct->SequencerDiscont | ADC_REG_InitStruct->ContinuousMode | ADC_REG_InitStruct->DMATransfer | ADC_REG_InitStruct->Overrun ); } else { MODIFY_REG(ADCx->CFGR, ADC_CFGR_EXTSEL | ADC_CFGR_EXTEN | ADC_CFGR_DISCEN | ADC_CFGR_DISCNUM | ADC_CFGR_CONT | ADC_CFGR_DMAEN | ADC_CFGR_DMACFG | ADC_CFGR_OVRMOD , ADC_REG_InitStruct->TriggerSource | LL_ADC_REG_SEQ_DISCONT_DISABLE | ADC_REG_InitStruct->ContinuousMode | ADC_REG_InitStruct->DMATransfer | ADC_REG_InitStruct->Overrun ); } /* Set ADC group regular sequencer length and scan direction */ LL_ADC_REG_SetSequencerLength(ADCx, ADC_REG_InitStruct->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 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->SequencerLength = LL_ADC_REG_SEQ_SCAN_DISABLE; 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; } /** * @brief Initialize some features of ADC group injected. * @note These parameters have an impact on ADC scope: ADC group injected. * Refer to corresponding unitary functions into * @ref ADC_LL_EF_Configuration_ADC_Group_Regular * (functions with prefix "INJ"). * @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 injected sequencer: * map channel on the selected sequencer rank. * Refer to function @ref LL_ADC_INJ_SetSequencerRanks(). * - Set ADC channel sampling time * Refer to function LL_ADC_SetChannelSamplingTime(); * @param ADCx ADC instance * @param ADC_INJ_InitStruct Pointer to a @ref LL_ADC_INJ_InitTypeDef structure * @retval An ErrorStatus enumeration value: * - SUCCESS: ADC registers are initialized * - ERROR: ADC registers are not initialized */ ErrorStatus LL_ADC_INJ_Init(ADC_TypeDef *ADCx, LL_ADC_INJ_InitTypeDef *ADC_INJ_InitStruct) { ErrorStatus status = SUCCESS; /* Check the parameters */ assert_param(IS_ADC_ALL_INSTANCE(ADCx)); assert_param(IS_LL_ADC_INJ_TRIG_SOURCE(ADC_INJ_InitStruct->TriggerSource)); assert_param(IS_LL_ADC_INJ_SEQ_SCAN_LENGTH(ADC_INJ_InitStruct->SequencerLength)); if(ADC_INJ_InitStruct->SequencerLength != LL_ADC_INJ_SEQ_SCAN_DISABLE) { assert_param(IS_LL_ADC_INJ_SEQ_SCAN_DISCONT_MODE(ADC_INJ_InitStruct->SequencerDiscont)); } assert_param(IS_LL_ADC_INJ_TRIG_AUTO(ADC_INJ_InitStruct->TrigAuto)); /* 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 injected */ /* - Set ADC group injected trigger source */ /* - Set ADC group injected sequencer length */ /* - Set ADC group injected sequencer discontinuous mode */ /* - Set ADC group injected conversion trigger: independent or */ /* from ADC group regular */ /* Note: On this STM32 serie, ADC trigger edge is set to value 0x0 by */ /* setting of trigger source to SW start. */ if(ADC_INJ_InitStruct->SequencerLength != LL_ADC_REG_SEQ_SCAN_DISABLE) { MODIFY_REG(ADCx->CFGR, ADC_CFGR_JDISCEN | ADC_CFGR_JAUTO , ADC_INJ_InitStruct->SequencerDiscont | ADC_INJ_InitStruct->TrigAuto ); } else { MODIFY_REG(ADCx->CFGR, ADC_CFGR_JDISCEN | ADC_CFGR_JAUTO , LL_ADC_REG_SEQ_DISCONT_DISABLE | ADC_INJ_InitStruct->TrigAuto ); } MODIFY_REG(ADCx->JSQR, ADC_JSQR_JEXTSEL | ADC_JSQR_JEXTEN | ADC_JSQR_JL , ADC_INJ_InitStruct->TriggerSource | ADC_INJ_InitStruct->SequencerLength ); } else { /* Initialization error: ADC instance is not disabled. */ status = ERROR; } return status; } /** * @brief Set each @ref LL_ADC_INJ_InitTypeDef field to default value. * @param ADC_INJ_InitStruct Pointer to a @ref LL_ADC_INJ_InitTypeDef structure * whose fields will be set to default values. * @retval None */ void LL_ADC_INJ_StructInit(LL_ADC_INJ_InitTypeDef *ADC_INJ_InitStruct) { /* Set ADC_INJ_InitStruct fields to default values */ /* Set fields of ADC group injected */ ADC_INJ_InitStruct->TriggerSource = LL_ADC_INJ_TRIG_SOFTWARE; ADC_INJ_InitStruct->SequencerLength = LL_ADC_INJ_SEQ_SCAN_DISABLE; ADC_INJ_InitStruct->SequencerDiscont = LL_ADC_INJ_SEQ_DISCONT_DISABLE; ADC_INJ_InitStruct->TrigAuto = LL_ADC_INJ_TRIG_INDEPENDENT; } /** * @} */ /** * @} */ /** * @} */ #endif /* ADC1 || ADC2 || ADC3 */ /** * @} */ #endif /* USE_FULL_LL_DRIVER */ /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/