在cubeide中，用cubemx产生stm32g474re LL库的初始代码中，ADC1和ADC2配成独立工作，但是在MX_ADC2_Init(void)中，这两句是错的 LL_ADC_DisableDeepPowerDown(ADC1);
LL_ADC_EnableInternalRegulator(ADC1);
将导致ADC2不供电，无法工作，每次都要手工改过来才能正常工作。
* @brief ADC2 Initialization Function
* @param None
* @retval None
*/
static void MX_ADC2_Init(void)
{
/* USER CODE BEGIN ADC2_Init 0 */
/* USER CODE END ADC2_Init 0 */
LL_ADC_InitTypeDef ADC_InitStruct = {0};
LL_ADC_REG_InitTypeDef ADC_REG_InitStruct = {0};
/* Peripheral clock enable */
LL_AHB2_GRP1_EnableClock(LL_AHB2_GRP1_PERIPH_ADC12);
/* ADC2 DMA Init */
/* ADC2 Init */
LL_DMA_SetPeriphRequest(DMA1, LL_DMA_CHANNEL_1, LL_DMAMUX_REQ_ADC2);
LL_DMA_SetDataTransferDirection(DMA1, LL_DMA_CHANNEL_1, LL_DMA_DIRECTION_PERIPH_TO_MEMORY);
LL_DMA_SetChannelPriorityLevel(DMA1, LL_DMA_CHANNEL_1, LL_DMA_PRIORITY_MEDIUM);
LL_DMA_SetMode(DMA1, LL_DMA_CHANNEL_1, LL_DMA_MODE_NORMAL);
LL_DMA_SetPeriphIncMode(DMA1, LL_DMA_CHANNEL_1, LL_DMA_PERIPH_NOINCREMENT);
LL_DMA_SetMemoryIncMode(DMA1, LL_DMA_CHANNEL_1, LL_DMA_MEMORY_INCREMENT);
LL_DMA_SetPeriphSize(DMA1, LL_DMA_CHANNEL_1, LL_DMA_PDATAALIGN_WORD);
LL_DMA_SetMemorySize(DMA1, LL_DMA_CHANNEL_1, LL_DMA_MDATAALIGN_HALFWORD);
/* USER CODE BEGIN ADC2_Init 1 */
/* USER CODE END ADC2_Init 1 */
/** Common config
*/
ADC_InitStruct.Resolution = LL_ADC_RESOLUTION_12B;
ADC_InitStruct.DataAlignment = LL_ADC_DATA_ALIGN_LEFT;
ADC_InitStruct.LowPowerMode = LL_ADC_LP_MODE_NONE;
LL_ADC_Init(ADC2, &ADC_InitStruct);
ADC_REG_InitStruct.TriggerSource = LL_ADC_REG_TRIG_EXT_TIM8_TRGO;
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_UNLIMITED;
ADC_REG_InitStruct.Overrun = LL_ADC_REG_OVR_DATA_OVERWRITTEN;
LL_ADC_REG_Init(ADC2, &ADC_REG_InitStruct);
LL_ADC_SetGainCompensation(ADC2, 0);
LL_ADC_SetOverSamplingScope(ADC2, LL_ADC_OVS_DISABLE);
/* 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--;
}
LL_ADC_REG_SetTriggerEdge(ADC2, LL_ADC_REG_TRIG_EXT_RISING);
/** Configure Regular Channel
*/
LL_ADC_REG_SetSequencerRanks(ADC2, LL_ADC_REG_RANK_1, LL_ADC_CHANNEL_VOPAMP3_ADC2);
LL_ADC_SetChannelSamplingTime(ADC2, LL_ADC_CHANNEL_VOPAMP3_ADC2, LL_ADC_SAMPLINGTIME_6CYCLES_5);
LL_ADC_SetChannelSingleDiff(ADC2, LL_ADC_CHANNEL_VOPAMP3_ADC2, LL_ADC_SINGLE_ENDED);
LL_ADC_SetOffset(ADC2, LL_ADC_OFFSET_1, LL_ADC_CHANNEL_VOPAMP3_ADC2, 0);
LL_ADC_SetOffsetSign(ADC2, LL_ADC_OFFSET_1, LL_ADC_OFFSET_SIGN_NEGATIVE);
LL_ADC_SetOffsetSaturation(ADC2, LL_ADC_OFFSET_1, LL_ADC_OFFSET_SATURATION_DISABLE);
/* USER CODE BEGIN ADC2_Init 2 */
LL_ADC_StartCalibration(ADC2, LL_ADC_SINGLE_ENDED);
while (LL_ADC_IsCalibrationOnGoing(ADC2) != 0) { };
wait_loop_index = (ADC_DELAY_CALIB_ENABLE_CPU_CYCLES >> 1);
while(wait_loop_index != 0)
{
wait_loop_index--;
}
/* Enable ADC */
LL_ADC_Enable(ADC2);
/* Poll for ADC ready to convert */
while (LL_ADC_IsActiveFlag_ADRDY(ADC2) == 0) { };
/* USER CODE END ADC2_Init 2 */
}
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