I am using NUCLEO-G071RB. I use 2 ADC channels: GPIO analog and internal temperature sensor. I connect the +3.3V to the GPIO analog pin via. potentiometer. The internal temperature looks like it works well (the temperature rises slightly when I put a finger on the MCU), but the GPIO analog give constant value, no mater what is the analog voltage attached to it (the voltage is monitored using oscilloscope)
The configuration:
My code:
while (1)
{
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
HAL_ADC_Start_DMA(&hadc1, adcCount, 2);
HAL_Delay(1000);
}
}
void HAL_ADC_ConvCpltCallback(ADC_HandleTypeDef* hadc)
{
if (hadc->Instance == ADC1)
{
// Process the ADC values
voltage = VDD * adcCount[0] / 4095.0f;
temp = ((VDD * adcCount[1] / 4095.0f - V30) / Avg_Slope) + 30.0f;
}
}
