Senior

Solved

hey everyone!

Forum|Forum|6 years ago
October 23, 2019
4 replies
1014 views

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Environmental sensors

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Best answer by Ozone

I'm no Cube/HAL user, by the way.

But for all STM32 MCUs I know, the following points are valid:

- Vdd&/ Vdda max. is 3,6V

- the ADC reference voltage is less or equal to Vdda

- analog pins (including ADC) are not 5V-tolerant

- the ADC has a default resoltution of 12 bits, (not 10)

Principal

I'm a bit confused. Doesn't return HAL_GPIO_ReadPin() just a logical state (High/Low) ?

AlaAuthor

Senior

you're right. I then tried ADC but the results didn't change:(

OzoneBest answer

Principal

I'm no Cube/HAL user, by the way.

But for all STM32 MCUs I know, the following points are valid:

- Vdd&/ Vdda max. is 3,6V

- the ADC reference voltage is less or equal to Vdda

- analog pins (including ADC) are not 5V-tolerant

- the ADC has a default resoltution of 12 bits, (not 10)