The GPIO analogue option is not to be confused with an ADC input, but in principle has two functions:
- Disconnecting the external pin from the digital function. This is useful, for example, to disconnect the Schmitt trigger present at the digital input from a floating input, because this can lead to high-frequency switching of this trigger with associated current consumption.
- Connecting any analogue peripherals (e.g. opamp, comparator, ADC) that may be present, but do not necessarily have to be in the respective case.
from
https://community.st.com/t5/stm32-mcus-products/use-gpio-analog-for-adc-read-value-on-stm32h735/td-p/75324
If you feel a post has answered your question, please click "Accept as Solution".
