Multi ADC Block

[giwonKIM]

Hi everyone,

I am wondering about multi ADC blocks(ADC1, ADC2).

I don't give you a delay at the moment.

When they start, must i give some delay to them?

If so, how long must i give some delay?

ex)

HAL_ADC_Start_IT(&hadc1);

Delay_us(2);

HAL_ADC_Start_IT(&hadc2);

My current code :

void HAL_TIM_PWM_PulseFinishedCallback(TIM_HandleTypeDef *htim)
{
if((htim->Instance == TIM5) && (htim->Channel == HAL_TIM_ACTIVE_CHANNEL_1))
{
HAL_ADC_Start_IT(&hadc1);
HAL_ADC_Start_IT(&hadc2);
}
}

void HAL_ADC_ConvCpltCallback(ADC_HandleTypeDef *hadc)
{

if(hadc->Instance == ADC1) {
internal_adc_value[0] = HAL_ADC_GetValue(&hadc1);
}

else if(hadc->Instance == ADC2) {
internal_adc_value[1] = HAL_ADC_GetValue(&hadc2);
}

}

My ADC Init :

static void MX_ADC1_Init(void)
{

/* USER CODE BEGIN ADC1_Init 0 */

/* USER CODE END ADC1_Init 0 */

ADC_MultiModeTypeDef multimode = {0};
ADC_ChannelConfTypeDef sConfig = {0};

/* USER CODE BEGIN ADC1_Init 1 */

/* USER CODE END ADC1_Init 1 */
/** Common config
*/
hadc1.Instance = ADC1;
hadc1.Init.ClockPrescaler = ADC_CLOCK_ASYNC_DIV1;
hadc1.Init.Resolution = ADC_RESOLUTION_12B;
hadc1.Init.ScanConvMode = ADC_SCAN_DISABLE;
hadc1.Init.EOCSelection = ADC_EOC_SEQ_CONV;
hadc1.Init.LowPowerAutoWait = DISABLE;
hadc1.Init.ContinuousConvMode = DISABLE;
hadc1.Init.NbrOfConversion = 1;
hadc1.Init.DiscontinuousConvMode = DISABLE;
hadc1.Init.ExternalTrigConv = ADC_SOFTWARE_START;
hadc1.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;
hadc1.Init.ConversionDataManagement = ADC_CONVERSIONDATA_DR;
hadc1.Init.Overrun = ADC_OVR_DATA_PRESERVED;
hadc1.Init.LeftBitShift = ADC_LEFTBITSHIFT_NONE;
hadc1.Init.OversamplingMode = ENABLE;
hadc1.Init.Oversampling.Ratio = 40;
hadc1.Init.Oversampling.RightBitShift = ADC_RIGHTBITSHIFT_NONE;
hadc1.Init.Oversampling.TriggeredMode = ADC_TRIGGEREDMODE_SINGLE_TRIGGER;
hadc1.Init.Oversampling.OversamplingStopReset = ADC_REGOVERSAMPLING_CONTINUED_MODE;
if (HAL_ADC_Init(&hadc1) != HAL_OK)
{
Error_Handler();
}
/** Configure the ADC multi-mode
*/
multimode.Mode = ADC_MODE_INDEPENDENT;
if (HAL_ADCEx_MultiModeConfigChannel(&hadc1, &multimode) != HAL_OK)
{
Error_Handler();
}
/** Configure Regular Channel
*/
sConfig.Channel = ADC_CHANNEL_4;
sConfig.Rank = ADC_REGULAR_RANK_1;
sConfig.SamplingTime = ADC_SAMPLETIME_1CYCLE_5;
sConfig.SingleDiff = ADC_SINGLE_ENDED;
sConfig.OffsetNumber = ADC_OFFSET_NONE;
sConfig.Offset = 0;
sConfig.OffsetSignedSaturation = DISABLE;
if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN ADC1_Init 2 */

/* USER CODE END ADC1_Init 2 */

}

/**
* @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 */

ADC_ChannelConfTypeDef sConfig = {0};

/* USER CODE BEGIN ADC2_Init 1 */

/* USER CODE END ADC2_Init 1 */
/** Common config
*/
hadc2.Instance = ADC2;
hadc2.Init.ClockPrescaler = ADC_CLOCK_ASYNC_DIV1;
hadc2.Init.Resolution = ADC_RESOLUTION_12B;
hadc2.Init.ScanConvMode = ADC_SCAN_DISABLE;
hadc2.Init.EOCSelection = ADC_EOC_SEQ_CONV;
hadc2.Init.LowPowerAutoWait = DISABLE;
hadc2.Init.ContinuousConvMode = DISABLE;
hadc2.Init.NbrOfConversion = 1;
hadc2.Init.DiscontinuousConvMode = DISABLE;
hadc2.Init.ExternalTrigConv = ADC_SOFTWARE_START;
hadc2.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;
hadc2.Init.ConversionDataManagement = ADC_CONVERSIONDATA_DR;
hadc2.Init.Overrun = ADC_OVR_DATA_PRESERVED;
hadc2.Init.LeftBitShift = ADC_LEFTBITSHIFT_NONE;
hadc2.Init.OversamplingMode = ENABLE;
hadc2.Init.Oversampling.Ratio = 40;
hadc2.Init.Oversampling.RightBitShift = ADC_RIGHTBITSHIFT_NONE;
hadc2.Init.Oversampling.TriggeredMode = ADC_TRIGGEREDMODE_SINGLE_TRIGGER;
hadc2.Init.Oversampling.OversamplingStopReset = ADC_REGOVERSAMPLING_CONTINUED_MODE;
if (HAL_ADC_Init(&hadc2) != HAL_OK)
{
Error_Handler();
}
/** Configure Regular Channel
*/
sConfig.Channel = ADC_CHANNEL_5;
sConfig.Rank = ADC_REGULAR_RANK_1;
sConfig.SamplingTime = ADC_SAMPLETIME_1CYCLE_5;
sConfig.SingleDiff = ADC_SINGLE_ENDED;
sConfig.OffsetNumber = ADC_OFFSET_NONE;
sConfig.Offset = 0;
sConfig.OffsetSignedSaturation = DISABLE;
if (HAL_ADC_ConfigChannel(&hadc2, &sConfig) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN ADC2_Init 2 */

/* USER CODE END ADC2_Init 2 */

}

Thank you.

If you want to see my code more, please tell me.