Read GPIO Analog

NASI · ‎2022-04-28

Hello,

I set one of GPIO to Analog mode and I want to read its value, by using HAL library.

Should I just use HAL_GPIO_ReadPin to read the value?

Thank you.

AScha.3 · ‎2024-01-10

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.

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