Posted on April 18, 2018 at 03:16Hi, I am trying to set up an STM32f030 to do ADC conversions on 4 channels using interrupts and no DMA. The first ADC input gets good values but the second ADC inf put is wonky.I used CubeMX to generate the code. I am a noob and wish to get the ADC working before diving into DMA. Any help would be appreciated.#
Here is the code:
void HAL_ADC_ConvCpltCallback(ADC_HandleTypeDef* AdcHandle)
{
switch(CurChannel)
{
case 0:
Adc_Raw_X = HAL_ADC_GetValue(AdcHandle);
CurChannel++;
AvgAdc[0]+=Adc_Raw_X;
cntAvgAdc[0]+=1;
if(cntAvgAdc[0]>=16)
{
cntAvgAdc[0] = 0;
AvgAdc[0] = AvgAdc[0] / 16;
flgInputChanged=1;
}
break;
case 1:
Adc_Raw_Y = HAL_ADC_GetValue(AdcHandle);
CurChannel++;
AvgAdc[1]+=Adc_Raw_Y;
cntAvgAdc[1]+=1;
if(cntAvgAdc[1]>=16)
{
cntAvgAdc[1] = 0;
AvgAdc[1] = AvgAdc[1] / 16;
flgInputChanged=1;
}
break;
case 2:
Adc_Spare1 = HAL_ADC_GetValue(AdcHandle);
CurChannel++;
break;
case 3:
Adc_Spare2 = HAL_ADC_GetValue(AdcHandle);
CurChannel++;
HAL_ADC_Stop_IT(&hadc);
break;
}
}
static void MX_ADC_Init(void)
{
ADC_ChannelConfTypeDef sConfig;
/**Configure the global features of the ADC (Clock, Resolution, Data Alignment and number of conversion)
*/
hadc.Instance = ADC1;
hadc.Init.ClockPrescaler = ADC_CLOCK_ASYNC_DIV1;
hadc.Init.Resolution = ADC_RESOLUTION_12B;
hadc.Init.DataAlign = ADC_DATAALIGN_RIGHT;
hadc.Init.ScanConvMode = ADC_SCAN_DIRECTION_FORWARD;
hadc.Init.EOCSelection = ADC_EOC_SINGLE_CONV;
//hadc.Init.EOCSelection = ADC_EOC_SINGLE_SEQ_CONV;
hadc.Init.LowPowerAutoWait = DISABLE;
hadc.Init.LowPowerAutoPowerOff = DISABLE;
hadc.Init.ContinuousConvMode = ENABLE;
hadc.Init.DiscontinuousConvMode = DISABLE;
hadc.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;
hadc.Init.DMAContinuousRequests = DISABLE;
hadc.Init.Overrun = ADC_OVR_DATA_PRESERVED;
if (HAL_ADC_Init(&hadc) != HAL_OK)
{
Error_Handler();
}
/**Configure for the selected ADC regular channel to be converted.
*/
sConfig.Channel = ADC_CHANNEL_1;
sConfig.Rank = ADC_RANK_CHANNEL_NUMBER;
sConfig.SamplingTime = ADC_SAMPLETIME_239CYCLES_5;
if (HAL_ADC_ConfigChannel(&hadc, &sConfig) != HAL_OK)
{
Error_Handler();
}
/**Configure for the selected ADC regular channel to be converted.
*/
sConfig.Channel = ADC_CHANNEL_1;
if (HAL_ADC_ConfigChannel(&hadc, &sConfig) != HAL_OK)
{
Error_Handler();
}
/**Configure for the selected ADC regular channel to be converted.
*/
sConfig.Channel = ADC_CHANNEL_2;
if (HAL_ADC_ConfigChannel(&hadc, &sConfig) != HAL_OK)
{
Error_Handler();
}
/**Configure for the selected ADC regular channel to be converted.
*/
sConfig.Channel = ADC_CHANNEL_3;
if (HAL_ADC_ConfigChannel(&hadc, &sConfig) != HAL_OK)
{
Error_Handler();
}
}
