โ2019-12-18 08:22 PM
I have configured 9 channels as follows:- channel 5,8,9,10,11,12,13,14,15. Now Sampling time for all channels is ADC_SAMPLETIME_1CYCLE_5. I have attached potentiometer for as input voltage. Now when I change pot of channel 9, it gets reflected in channel 5 instead of channel 9. what might be the reason. Below is my configuration for the code:-
void MX_ADC1_Init(void)
{
ADC_ChannelConfTypeDef sConfig;
/**Common config
*/
hadc1.Instance = ADC1;
hadc1.Init.ScanConvMode = ADC_SCAN_ENABLE;
hadc1.Init.ContinuousConvMode = ENABLE;
hadc1.Init.DiscontinuousConvMode = DISABLE;
hadc1.Init.ExternalTrigConv = ADC_SOFTWARE_START;
hadc1.Init.DataAlign = ADC_DATAALIGN_RIGHT;
hadc1.Init.NbrOfConversion = 9;
if (HAL_ADC_Init(&hadc1) != HAL_OK)
{
_Error_Handler(__FILE__, __LINE__);
}
/**Configure Regular Channel
*/
sConfig.Channel = ADC_CHANNEL_5;
sConfig.Rank = ADC_REGULAR_RANK_1;
sConfig.SamplingTime = ADC_SAMPLETIME_1CYCLE_5;
if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK)
{
_Error_Handler(__FILE__, __LINE__);
}
/**Configure Regular Channel
*/
sConfig.Channel = ADC_CHANNEL_8;
sConfig.Rank = ADC_REGULAR_RANK_2;
sConfig.SamplingTime = ADC_SAMPLETIME_1CYCLE_5;
if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK)
{
_Error_Handler(__FILE__, __LINE__);
}
/**Configure Regular Channel
*/
sConfig.Channel = ADC_CHANNEL_9;
sConfig.Rank = ADC_REGULAR_RANK_3;
sConfig.SamplingTime = ADC_SAMPLETIME_1CYCLE_5;
if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK)
{
_Error_Handler(__FILE__, __LINE__);
}
/**Configure Regular Channel
*/
sConfig.Channel = ADC_CHANNEL_10;
sConfig.Rank = ADC_REGULAR_RANK_4;
sConfig.SamplingTime = ADC_SAMPLETIME_1CYCLE_5;
if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK)
{
_Error_Handler(__FILE__, __LINE__);
}
/**Configure Regular Channel
*/
sConfig.Channel = ADC_CHANNEL_11;
sConfig.Rank = ADC_REGULAR_RANK_5;
sConfig.SamplingTime = ADC_SAMPLETIME_1CYCLE_5;
if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK)
{
_Error_Handler(__FILE__, __LINE__);
}
/**Configure Regular Channel
*/
sConfig.Channel = ADC_CHANNEL_12;
sConfig.Rank = ADC_REGULAR_RANK_6;
sConfig.SamplingTime = ADC_SAMPLETIME_1CYCLE_5;
if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK)
{
_Error_Handler(__FILE__, __LINE__);
}
/**Configure Regular Channel
*/
sConfig.Channel = ADC_CHANNEL_13;
sConfig.Rank = ADC_REGULAR_RANK_7;
sConfig.SamplingTime = ADC_SAMPLETIME_1CYCLE_5;
if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK)
{
_Error_Handler(__FILE__, __LINE__);
}
/**Configure Regular Channel
*/
sConfig.Channel = ADC_CHANNEL_14;
sConfig.Rank = ADC_REGULAR_RANK_8;
sConfig.SamplingTime = ADC_SAMPLETIME_1CYCLE_5;
if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK)
{
_Error_Handler(__FILE__, __LINE__);
}
/**Configure Regular Channel
*/
sConfig.Channel = ADC_CHANNEL_15;
sConfig.Rank = ADC_REGULAR_RANK_9;
sConfig.SamplingTime = ADC_SAMPLETIME_1CYCLE_5;
if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK)
{
_Error_Handler(__FILE__, __LINE__);
}
}
void HAL_ADC_MspInit(ADC_HandleTypeDef* adcHandle)
{
GPIO_InitTypeDef GPIO_InitStruct;
if(adcHandle->Instance==ADC1)
{
/* USER CODE BEGIN ADC1_MspInit 0 */
/* USER CODE END ADC1_MspInit 0 */
/* ADC1 clock enable */
__HAL_RCC_ADC1_CLK_ENABLE();
/**ADC1 GPIO Configuration
PA4 ------> ADC1_IN4
PA5 ------> ADC1_IN5
*/
GPIO_InitStruct.Pin = GPIO_PIN_5;
GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
GPIO_InitStruct.Pin = GPIO_PIN_0|GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3|GPIO_PIN_4|GPIO_PIN_5;
GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
GPIO_InitStruct.Pin = GPIO_PIN_0|GPIO_PIN_1;
GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
}
}
In main.c file....
int main()
{
HAL_Init();
SystemClock_Config();
MX_GPIO_Init();
MX_ADC1_Init();
while(1)
{
if (HAL_ADCEx_Calibration_Start(&hadc1) != HAL_OK)
{
/* Calibration Error */
Error_Handler();
}
HAL_Delay(1000);
HAL_ADC_Start(&hadc1);
if(HAL_ADC_PollForConversion(&hadc1,100)== HAL_OK)
{
adc5 = HAL_ADC_GetValue(&hadc1);
}
HAL_Delay(1000);
if(HAL_ADC_PollForConversion(&hadc1,100)== HAL_OK)
{
adc8 = HAL_ADC_GetValue(&hadc1);
}
HAL_Delay(1000);
if(HAL_ADC_PollForConversion(&hadc1,100)== HAL_OK)
{
adc9 = HAL_ADC_GetValue(&hadc1);
}
HAL_Delay(1000);
if(HAL_ADC_PollForConversion(&hadc1,100)== HAL_OK)
{
adc10 = HAL_ADC_GetValue(&hadc1);
}
HAL_Delay(1000);
if(HAL_ADC_PollForConversion(&hadc1,100)== HAL_OK)
{
adc11 = HAL_ADC_GetValue(&hadc1);
}
HAL_Delay(1000);
if(HAL_ADC_PollForConversion(&hadc1,100)== HAL_OK)
{
adc12 = HAL_ADC_GetValue(&hadc1);
}
HAL_Delay(1000);
if(HAL_ADC_PollForConversion(&hadc1,100)== HAL_OK)
{
adc13 = HAL_ADC_GetValue(&hadc1);
}
HAL_Delay(1000);
if(HAL_ADC_PollForConversion(&hadc1,100)== HAL_OK)
{
adc14 = HAL_ADC_GetValue(&hadc1);
}
HAL_Delay(1000);
if(HAL_ADC_PollForConversion(&hadc1,10)== HAL_OK)
{
adc15 = HAL_ADC_GetValue(&hadc1);
}
HAL_ADC_Stop(&hadc1);
HAL_Delay(1000);
}
}
โ2019-12-19 08:31 PM
NO Answers :unamused_face: :unamused_face:
Tried to debug a lot in polling mode but it doesnt work properly....Got fed up & I configured ADC in DMA mode . Its working properly now.:D =)
But I dont understand whats the problem in polling method !!!:( :|