STM32F303C8C6 DMA 2ADC 5Channels
hi i am having some difficoulty's where i cant find a solve for:
problem 1 ADC1_channel12 feeds me a value back around 4030 while its voltage on the pin is 0.0V
problem 2 ADC2_channel3 is always reading 0
i configured all ADC channels to place data in the memory using DMA.
different channels different prioritys and all but no resoult
cheked hardware but same resoult
i am using SWD for debuggin and am running the microconroller for a few seconds. than add a breakpoin and than check the registers assigned to the ADC ADC1Values&ADC1Values
# note i am not using the conversion complete callback becouse i dont really care about the moment when the data is read out
honestley i am not very good at this and just started so i let the IOC configurationhandle all of the settings
please review my code and settings i hope i forgot something simple but i am in to it for 3 days now and need a solve.
here is my configration:
MX_GPIO_Init();
MX_DMA_Init();
MX_ADC1_Init();
MX_ADC2_Init();
MX_TIM2_Init();
MX_TIM6_Init();
HAL_ADC_Start_DMA(&hadc1, (uint32_t*) ADC1Values, NumADC1channels*AmtOfSamples);
HAL_ADC_Start_DMA(&hadc2, (uint32_t*) ADC2Values, NumADC2channels*AmtOfSamples);
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_SYNC_PCLK_DIV4;
hadc1.Init.Resolution = ADC_RESOLUTION_12B;
hadc1.Init.ScanConvMode = ADC_SCAN_ENABLE;
hadc1.Init.ContinuousConvMode = ENABLE;
hadc1.Init.DiscontinuousConvMode = DISABLE;
hadc1.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;
hadc1.Init.ExternalTrigConv = ADC_SOFTWARE_START;
hadc1.Init.DataAlign = ADC_DATAALIGN_RIGHT;
hadc1.Init.NbrOfConversion = 4;
hadc1.Init.DMAContinuousRequests = ENABLE;
hadc1.Init.EOCSelection = ADC_EOC_SEQ_CONV;
hadc1.Init.LowPowerAutoWait = DISABLE;
hadc1.Init.Overrun = ADC_OVR_DATA_OVERWRITTEN;
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_1;
sConfig.Rank = ADC_REGULAR_RANK_1;
sConfig.SingleDiff = ADC_SINGLE_ENDED;
sConfig.SamplingTime = ADC_SAMPLETIME_181CYCLES_5;
sConfig.OffsetNumber = ADC_OFFSET_NONE;
sConfig.Offset = 0;
if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK)
{
Error_Handler();
}
/** Configure Regular Channel
*/
sConfig.Channel = ADC_CHANNEL_2;
sConfig.Rank = ADC_REGULAR_RANK_2;
if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK)
{
Error_Handler();
}
/** Configure Regular Channel
*/
sConfig.Channel = ADC_CHANNEL_3;
sConfig.Rank = ADC_REGULAR_RANK_3;
if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK)
{
Error_Handler();
}
/** Configure Regular Channel
*/
sConfig.Channel = ADC_CHANNEL_12;
sConfig.Rank = ADC_REGULAR_RANK_4;
sConfig.SamplingTime = ADC_SAMPLETIME_601CYCLES_5;
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_SYNC_PCLK_DIV4;
hadc2.Init.Resolution = ADC_RESOLUTION_12B;
hadc2.Init.ScanConvMode = ADC_SCAN_DISABLE;
hadc2.Init.ContinuousConvMode = ENABLE;
hadc2.Init.DiscontinuousConvMode = DISABLE;
hadc2.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;
hadc2.Init.ExternalTrigConv = ADC_SOFTWARE_START;
hadc2.Init.DataAlign = ADC_DATAALIGN_RIGHT;
hadc2.Init.NbrOfConversion = 1;
hadc2.Init.DMAContinuousRequests = ENABLE;
hadc2.Init.EOCSelection = ADC_EOC_SEQ_CONV;
hadc2.Init.LowPowerAutoWait = DISABLE;
hadc2.Init.Overrun = ADC_OVR_DATA_OVERWRITTEN;
if (HAL_ADC_Init(&hadc2) != HAL_OK)
{
Error_Handler();
}
/** Configure Regular Channel
*/
sConfig.Channel = ADC_CHANNEL_3;
sConfig.Rank = ADC_REGULAR_RANK_1;
sConfig.SingleDiff = ADC_SINGLE_ENDED;
sConfig.SamplingTime = ADC_SAMPLETIME_601CYCLES_5;
sConfig.OffsetNumber = ADC_OFFSET_NONE;
sConfig.Offset = 0;
if (HAL_ADC_ConfigChannel(&hadc2, &sConfig) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN ADC2_Init 2 */
/* USER CODE END ADC2_Init 2 */
}
every 100 ms i call this function:
static void SaveAnalogValues(void) {
for (uint16_t a = 0; a < NumADC1channels; a++) {
uint32_t SUM1 = 0;
for (uint16_t b = 0; b < AmtOfSamples; b++) {
SUM1 = SUM1+ADC1Values[b][a];
}
switch (a) {
case 0: varADCpotTimUp = SUM1 / AmtOfSamples; break;
case 1: varADCpotTinDown = SUM1 / AmtOfSamples; break;
case 2: varADCpotDutycycle = SUM1 / AmtOfSamples; break;
case 3: varADCmotorCurrent = SUM1 / AmtOfSamples; break;
}
}
for (uint16_t a = 0; a < NumADC2channels; a++) {
uint32_t SUM2 = 0;
for (uint16_t b = 0; b < AmtOfSamples; b++) {
SUM2 = SUM2+ADC2Values[b][a];
}
switch (a) {
case 0: varADCvoltage = SUM2 / AmtOfSamples; break;
}
}
//varADCvoltage = HAL_ADC_GetValue(&hadc2); // de DMA werkt niet dus moet maar even met POLL methode
// refactor adc value to usable time for potmeters for limitswitches
LimitSwitchUpDelayTIME = map(varADCpotTimUp, 0, 4095, 0, LimitswitchPotmeterBandwith);
LimitSwitchDownDelayTIME = map(varADCpotTinDown, 0, 4095, 0, LimitswitchPotmeterBandwith);
MotorStartupSpeed = map(varADCpotDutycycle, 0 , 4095 , 0, 100);
InputvoltageVOLTS = map((float)varADCvoltage, 0, 4095, 0, 39.98); // Real Volts
MotorcurrentAMPS = map((float)varADCmotorCurrent, 0, 4095, 0, 6.6); // real AMPS
}
where i read all the data from the banks back to the variables that i use in my program.