ADC1 running with "Continuous Conversion" mode, no DMA. It has one regular channel 3 and one injected channel Temperature Sensor. I want to use TIM2 TRGO to active the injected channel every few second. However, its not working.
When I set the ADC inject trigger source to software trigger, then call the function LL_ADC_INJ_StartConversion(ADC1); the ADC value of injected channel is updated aber correctly.
Then I try to debug TIM2 with interrupt, but TIM2_IRQHandler seems never be called.
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);
}
void TIM2_IRQHandler(void)
{
// only for debug
if(LL_TIM_IsActiveFlag_TRIG(TIM2))
{
LED3_toggle();
LL_TIM_ClearFlag_TRIG(TIM2);
}
}
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