/** * @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(). * @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; /* 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); /* 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); /* Disable the ADC instance */ LL_ADC_Disable(ADCx); } /* Check whether ADC state is compliant with expected state */ /* (hardware requirements of bits state to reset registers below) */ if(READ_BIT(ADCx->CR2, ADC_CR2_ADON) == 0U) { /* ========== Reset ADC registers ========== */ /* Reset register SR */ CLEAR_BIT(ADCx->SR, ( LL_ADC_FLAG_STRT | LL_ADC_FLAG_JSTRT | LL_ADC_FLAG_EOS | LL_ADC_FLAG_JEOS | LL_ADC_FLAG_AWD1 ) ); /* Reset register CR1 */ #if defined (STM32F103x6) || defined (STM32F103xB) || defined (STM32F105xC) || defined (STM32F107xC) || defined (STM32F103xE) || defined (STM32F103xG) CLEAR_BIT(ADCx->CR1, ( ADC_CR1_AWDEN | ADC_CR1_JAWDEN | ADC_CR1_DUALMOD | ADC_CR1_DISCNUM | ADC_CR1_JDISCEN | ADC_CR1_DISCEN | ADC_CR1_JAUTO | ADC_CR1_AWDSGL | ADC_CR1_SCAN | ADC_CR1_JEOCIE | ADC_CR1_AWDIE | ADC_CR1_EOCIE | ADC_CR1_AWDCH ) ); #else CLEAR_BIT(ADCx->CR1, ( ADC_CR1_AWDEN | ADC_CR1_JAWDEN | ADC_CR1_DISCNUM | ADC_CR1_JDISCEN | ADC_CR1_DISCEN | ADC_CR1_JAUTO | ADC_CR1_AWDSGL | ADC_CR1_SCAN | ADC_CR1_JEOCIE | ADC_CR1_AWDIE | ADC_CR1_EOCIE | ADC_CR1_AWDCH ) ); #endif /* Reset register CR2 */ CLEAR_BIT(ADCx->CR2, ( ADC_CR2_TSVREFE | ADC_CR2_SWSTART | ADC_CR2_EXTTRIG | ADC_CR2_EXTSEL | ADC_CR2_JSWSTART | ADC_CR2_JEXTTRIG | ADC_CR2_JEXTSEL | ADC_CR2_ALIGN | ADC_CR2_DMA | ADC_CR2_RSTCAL | ADC_CR2_CAL | ADC_CR2_CONT | ADC_CR2_ADON ) ); /* Reset register SMPR1 */ CLEAR_BIT(ADCx->SMPR1, ( ADC_SMPR1_SMP17 | ADC_SMPR1_SMP16 | ADC_SMPR1_SMP15 | ADC_SMPR1_SMP14 | ADC_SMPR1_SMP13 | ADC_SMPR1_SMP12 | ADC_SMPR1_SMP11 | ADC_SMPR1_SMP10) ); /* Reset register SMPR2 */ CLEAR_BIT(ADCx->SMPR2, ( ADC_SMPR2_SMP9 | ADC_SMPR2_SMP8 | ADC_SMPR2_SMP7 | ADC_SMPR2_SMP6 | ADC_SMPR2_SMP5 | ADC_SMPR2_SMP4 | ADC_SMPR2_SMP3 | ADC_SMPR2_SMP2 | ADC_SMPR2_SMP1 | ADC_SMPR2_SMP0) ); /* Reset register JOFR1 */ CLEAR_BIT(ADCx->JOFR1, ADC_JOFR1_JOFFSET1); /* Reset register JOFR2 */ CLEAR_BIT(ADCx->JOFR2, ADC_JOFR2_JOFFSET2); /* Reset register JOFR3 */ CLEAR_BIT(ADCx->JOFR3, ADC_JOFR3_JOFFSET3); /* Reset register JOFR4 */ CLEAR_BIT(ADCx->JOFR4, ADC_JOFR4_JOFFSET4); /* Reset register HTR */ SET_BIT(ADCx->HTR, ADC_HTR_HT); /* Reset register LTR */ CLEAR_BIT(ADCx->LTR, ADC_LTR_LT); /* Reset register SQR1 */ CLEAR_BIT(ADCx->SQR1, ( ADC_SQR1_L | ADC_SQR1_SQ16 | ADC_SQR1_SQ15 | ADC_SQR1_SQ14 | ADC_SQR1_SQ13) ); /* Reset register SQR2 */ CLEAR_BIT(ADCx->SQR2, ( ADC_SQR2_SQ12 | ADC_SQR2_SQ11 | ADC_SQR2_SQ10 | ADC_SQR2_SQ9 | ADC_SQR2_SQ8 | ADC_SQR2_SQ7) ); /* Reset register JSQR */ CLEAR_BIT(ADCx->JSQR, ( ADC_JSQR_JL | ADC_JSQR_JSQ4 | ADC_JSQR_JSQ3 | ADC_JSQR_JSQ2 | ADC_JSQR_JSQ1 ) ); /* Reset register DR */ /* bits in access mode read only, no direct reset applicable */ /* Reset registers JDR1, JDR2, JDR3, JDR4 */ /* bits in access mode read only, no direct reset applicable */ } return status; }
/** * @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 = 0UL; /* Check the parameters */ assert_param(IS_ADC_ALL_INSTANCE(ADCx)); /* Disable ADC instance if not already disabled. */ if(LL_ADC_IsEnabled(ADCx) == 1UL) { /* 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) != 0UL) { if(LL_ADC_REG_IsStopConversionOngoing(ADCx) == 0UL) { 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) != 0UL) { if(LL_ADC_INJ_IsStopConversionOngoing(ADCx) == 0UL) { 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)) == 1UL) { timeout_cpu_cycles--; if(timeout_cpu_cycles == 0UL) { /* Time-out error */ status = ERROR; break; } } /* 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) == 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_JADSTP | ADC_CR_ADSTP | ADC_CR_JADSTART | 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_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 */ CLEAR_BIT(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_RES | ADC_CFGR_DMNGT ) ); SET_BIT(ADCx->CFGR, ADC_CFGR_JQDIS); /* Reset register CFGR2 */ CLEAR_BIT(ADCx->CFGR2, ( ADC_CFGR2_LSHIFT | ADC_CFGR2_OVSR | ADC_CFGR2_RSHIFT1 | ADC_CFGR2_RSHIFT4 | ADC_CFGR2_RSHIFT3 | ADC_CFGR2_RSHIFT2 | ADC_CFGR2_RSHIFT1 | ADC_CFGR2_ROVSM | ADC_CFGR2_TROVS | ADC_CFGR2_OVSS | 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_SMP19 | ADC_SMPR2_SMP18 | ADC_SMPR2_SMP17 | ADC_SMPR2_SMP16 | ADC_SMPR2_SMP15 | ADC_SMPR2_SMP14 | ADC_SMPR2_SMP13 | ADC_SMPR2_SMP12 | ADC_SMPR2_SMP11 | ADC_SMPR2_SMP10) ); /* Reset register TR1 */ CLEAR_BIT(ADCx->LTR1, ADC_LTR_LT); SET_BIT(ADCx->HTR1, ADC_HTR_HT); CLEAR_BIT(ADCx->LTR2, ADC_LTR_LT); SET_BIT(ADCx->HTR2, ADC_HTR_HT); CLEAR_BIT(ADCx->LTR3, ADC_LTR_LT); SET_BIT(ADCx->HTR3, ADC_HTR_HT); /* 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 | ADC_OFR1_OFFSET1_CH | ADC_OFR1_SSATE); /* Reset register OFR2 */ CLEAR_BIT(ADCx->OFR2, ADC_OFR2_OFFSET2 | ADC_OFR2_OFFSET2_CH | ADC_OFR2_SSATE); /* Reset register OFR3 */ CLEAR_BIT(ADCx->OFR3, ADC_OFR3_OFFSET3 | ADC_OFR3_OFFSET3_CH | ADC_OFR3_SSATE); /* Reset register OFR4 */ CLEAR_BIT(ADCx->OFR4, ADC_OFR4_OFFSET4 | ADC_OFR4_OFFSET4_CH | ADC_OFR4_SSATE); /* 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); /* Reset register CALFACT2 */ CLEAR_BIT(ADCx->CALFACT2, ADC_CALFACT2_LINCALFACT); } 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 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. */ /* No action on register CR */ /* 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); /* 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_VBATEN) 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_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 ) ); #endif /* Reset register DR */ /* bits in access mode read only, no direct reset applicable */ } 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; }