如何使用TIM2触发ADC1注入通道？

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);
• }
• }