[问答]

如何使用TIM2触发ADC1注入通道？

246 adc

问答对人有帮助，内容完整，我也想知道答案 0 ADC1 以“连续转换”模式运行，无 DMA。它有一个常规通道 3 和一个注入通道温度传感器。我想每隔几秒使用 tiM2 TRGO 激活注入通道。但是，它不起作用。当我将 ADC 注入触发源设置为软件触发时，然后调用函数 LL_ADC_INJ_StartConversion(ADC1)；注入通道的 ADC 值正确更新。然后我尝试用中断调试 TIM2，但似乎从未调用过 TIM2_IRQHandler。 void adc1_uac_init(void){ LL_ADC_InitTypeDef ADC_InitStruct = { 0 }; LL_ADC_REG_InitTypeDef ADC_REG_InitStruct = { 0 }; LL_ADC_CommonInitTypeDef ADC_CommonInitStruct = { 0 }; LL_ADC_INJ_InitTypeDef ADC_INJ_InitStruct = { 0 }; LL_GPIO_InitTypeDef GPIO_InitStruct = { 0 }; /* Peripheral clock enable / LL_AHB2_GRP1_EnableClock(LL_AHB2_GRP1_PERIPH_ADC12); LL_AHB2_GRP1_EnableClock(LL_AHB2_GRP1_PERIPH_GPIOA); /ADC1 GPIO Configuration PA2 ------> ADC1_IN3 / GPIO_InitStruct.Pin = LL_GPIO_PIN_2; GPIO_InitStruct.Mode = LL_GPIO_MODE_ANALOG; GPIO_InitStruct.Pull = LL_GPIO_PULL_NO; LL_GPIO_Init(GPIOA, &GPIO_InitStruct); /** Common config / ADC_InitStruct.Resolution = LL_ADC_RESOLUTION_12B; ADC_InitStruct.DataAlignment = LL_ADC_DATA_ALIGN_RIGHT; ADC_InitStruct.LowPowerMode = LL_ADC_LP_MODE_NONE; LL_ADC_Init(ADC1, &ADC_InitStruct); 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_CONTINUOUS; ADC_REG_InitStruct.DMATransfer = LL_ADC_REG_DMA_TRANSFER_NONE; ADC_REG_InitStruct.Overrun = LL_ADC_REG_OVR_DATA_OVERWRITTEN; LL_ADC_REG_Init(ADC1, &ADC_REG_InitStruct); LL_ADC_SetGainCompensation(ADC1, 0); LL_ADC_SetOverSamplingScope(ADC1, LL_ADC_OVS_GRP_REGULAR_CONTINUED); LL_ADC_ConfigOverSamplingRatioShift(ADC1, LL_ADC_OVS_RATIO_16, LL_ADC_OVS_SHIFT_NONE); LL_ADC_SetOverSamplingDiscont(ADC1, LL_ADC_OVS_REG_CONT); / Disable ADC deep power down (enabled by default after reset state) / LL_ADC_DisableDeepPowerDown(ADC1); / Enable ADC internal voltage regulator / LL_ADC_EnableInternalRegulator(ADC1); / Delay for ADC internal voltage regulator stabilization. / / Compute number of CPU cycles to wait for, from delay in us. / / Note: Variable divided by 2 to compensate partially / / CPU processing cycles (depends on compilation optimization). / / Note: If system core clock frequency is below 200kHz, wait time / / is only a few CPU processing cycles. / uint32_t wait_loop_index; wait_loop_index = ((LL_ADC_DELAY_INTERNAL_REGUL_STAB_US (SystemCoreClock / (100000 * 2))) / 10); while (wait_loop_index != 0) { wait_loop_index--; } ADC_CommonInitStruct.CommonClock = LL_ADC_CLOCK_SYNC_PCLK_DIV4; ADC_CommonInitStruct.Multimode = LL_ADC_MULTI_INDEPENDENT; LL_ADC_CommonInit(__LL_ADC_COMMON_INSTANCE(ADC1), &ADC_CommonInitStruct); /** Configure Injected ADC / // 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; // LL_ADC_INJ_Init(ADC1, &ADC_INJ_InitStruct); // LL_ADC_INJ_SetQueueMode(ADC1, LL_ADC_INJ_QUEUE_DISABLE); // LL_ADC_SetOverSamplingScope(ADC1, LL_ADC_OVS_GRP_REGULAR_CONTINUED); // LL_ADC_SetCommonPathInternalCh(ADC12_COMMON,LL_ADC_PATH_INTERNAL_TEMPSENSOR); ADC_INJ_InitStruct.TriggerSource = LL_ADC_INJ_TRIG_EXT_TIM2_TRGO; 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; LL_ADC_INJ_Init(ADC1, &ADC_INJ_InitStruct); LL_ADC_INJ_SetQueueMode(ADC1, LL_ADC_INJ_QUEUE_DISABLE); LL_ADC_SetOverSamplingScope(ADC1, LL_ADC_OVS_GRP_REGULAR_CONTINUED); LL_ADC_INJ_SetTriggerEdge(ADC1, LL_ADC_INJ_TRIG_EXT_RISING); /* Configure Analog WatchDog 1 / LL_ADC_SetAnalogWDMonitChannels(ADC1, LL_ADC_AWD1, LL_ADC_AWD_CHANNEL_3_REG); LL_ADC_ConfigAnalogWDThresholds(ADC1, LL_ADC_AWD1, ADC1_AWD_H, ADC1_AWD_L); LL_ADC_SetAWDFilteringConfiguration(ADC1, LL_ADC_AWD1, LL_ADC_AWD_FILTERING_NONE); LL_ADC_DisableIT_AWD1(ADC1); /* Configure Regular Channel / LL_ADC_REG_SetSequencerRanks(ADC1, LL_ADC_REG_RANK_1, LL_ADC_CHANNEL_3); LL_ADC_SetChannelSamplingTime(ADC1, LL_ADC_CHANNEL_3, LL_ADC_SAMPLINGTIME_2CYCLES_5); LL_ADC_SetChannelSingleDiff(ADC1, LL_ADC_CHANNEL_3, LL_ADC_SINGLE_ENDED); /* Configure Injected Channel / LL_ADC_SetChannelSamplingTime(ADC1, LL_ADC_CHANNEL_TEMPSENSOR_ADC1, LL_ADC_SAMPLINGTIME_92CYCLES_5); LL_ADC_SetChannelSingleDiff(ADC1, LL_ADC_CHANNEL_TEMPSENSOR_ADC1, LL_ADC_SINGLE_ENDED); LL_ADC_INJ_SetSequencerRanks(ADC1, LL_ADC_INJ_RANK_1, LL_ADC_CHANNEL_TEMPSENSOR_ADC1); / Disable ADC deep power down (enabled by default after reset state) / LL_ADC_DisableDeepPowerDown(ADC1); / Enable ADC internal voltage regulator / LL_ADC_EnableInternalRegulator(ADC1); / Delay for ADC internal voltage regulator stabilization. / / Compute number of CPU cycles to wait for, from delay in us. / / Note: Variable divided by 2 to compensate partially / / CPU processing cycles (depends on compilation optimization). / / Note: If system core clock frequency is below 200kHz, wait time / / is only a few CPU processing cycles. / wait_loop_index = ((LL_ADC_DELAY_TEMPSENSOR_STAB_US (SystemCoreClock / (100000 * 2))) / 10); while(wait_loop_index != 0) { wait_loop_index--; } /* Run ADC self calibration / LL_ADC_StartCalibration(ADC1, LL_ADC_SINGLE_ENDED); while( LL_ADC_IsCalibrationOnGoing(ADC1)); / Delay between ADC end of calibration and ADC enable. / / Note: Variable divided by 2 to compensate partially / / CPU processing cycles (depends on compilation optimization). / wait_loop_index = (5 >> 1); while(wait_loop_index != 0) { wait_loop_index--; } LL_ADC_Enable(ADC1); while (LL_ADC_IsActiveFlag_ADRDY(ADC1) == 0); LL_ADC_REG_StartConversion(ADC1); LL_ADC_INJ_StartConversion(ADC1); } / TIM2 init function / void MX_TIM2_Init(void) { LL_TIM_InitTypeDef TIM_InitStruct = {0}; / Peripheral clock enable / LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_TIM2); / TIM2 interrupt Init */ NVIC_SetPriority(TIM2_IRQn, NVIC_EncodePriority(NVIC_GetPriorityGrouping(),0, 0)); NVIC_EnableIRQ(TIM2_IRQn); TIM_InitStruct.Prescaler = 1700; TIM_InitStruct.CounterMode = LL_TIM_COUNTERMODE_UP; TIM_InitStruct.Autoreload = 10000; TIM_InitStruct.ClockDivision = LL_TIM_CLOCKDIVISION_DIV1; LL_TIM_Init(TIM2, &TIM_InitStruct); LL_TIM_EnableARRPreload(TIM2); LL_TIM_SetClockSource(TIM2, LL_TIM_CLOCKSOURCE_INTERNAL); LL_TIM_SetTriggerOutput(TIM2, LL_TIM_TRGO_UPDATE); LL_TIM_EnableMasterSlaveMode(TIM2); LL_TIM_EnableIT_TRIG(TIM2); //only for debug LL_TIM_EnableCounter(TIM2); } 的 void TIM2_IRQHandler(void) { // only for debug if(LL_TIM_IsActiveFlag_TRIG(TIM2)) { LED3_toggle(); LL_TIM_ClearFlag_TRIG(TIM2); } } 0
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