Dear community
I would like to clarify regarding current sensing configuration of EVSPIN32G4NH. Below are my method and verification step to setup the configuration of ADC and OPAMP. I setup 1 channel of ADC instead of 2 or 3 channels to avoid complexity.
1. I use 'standalone mode of OPAMP1 and GPIO settings per below image. Also, attached my ADC setup for single channel. To show huge jump of ADC values, I supply DAC (PA5) to ADC (PA2) and short it. However, from the output always 0 per below image. Also, below is my code to display ADC values.
PA1 - OPAMP1_VINP
PA2 - ADC1_IN3 & OPAMP1_VOUT
PA3 - OPAMP1_VINM
However I can't read any value from the ADC
and here is my code
void HAL_ADC_ConvCpltCallback(ADC_HandleTypeDef* hadc)
{
if (hadc->Instance == ADC2) // Check if ADC1 triggered the callback
{
adc_ready_flag = 1; // Set a flag to indicate data is ready
}
}
while (1)
{
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
HAL_DAC_SetValue(&hdac1, DAC_CHANNEL_2, DAC_ALIGN_12B_R, value_dac);
value_dac++;
if(value_dac>4095) {
value_dac=0;
}
printf("ADC: %ld, DAC: %ld\r\n",value_adc,value_dac);
}
So in order to clarify the problem, I try to use another ADC2 pin (PA4) and use exactly same setup as ADC1 (PA2). Same method is used, where i supply ADC2 with DAC (PA5) and short it. It can show correct digital values per below image that tally with DAC input.
And I can read the value right now, and here is my code
void HAL_ADC_ConvCpltCallback(ADC_HandleTypeDef* hadc)
{
if (hadc->Instance == ADC1) // Check if ADC1 triggered the callback
{
adc_ready_flag = 1; // Set a flag to indicate data is ready
}
}
while (1)
{
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
HAL_DAC_SetValue(&hdac1, DAC_CHANNEL_2, DAC_ALIGN_12B_R, value_dac);
value_dac++;
if(value_dac>4095) {
value_dac=0;
}
printf("ADC1: %ld, DAC: %ld\r\n",value_adc1,value_dac);
}
So it looks like the code and ADC settings should be correct, but we are still unable to get a value from OpAmp PA2(OPO1) value.
Could you assist us in troubleshooting this issue?
Thanks a lot!
