STM32 PC14 PC15

[Meekdai]

Hello！

I do not need to use the crystal 32.768KHZ, I would like to use GPIO port PC14 and PC15, what should I do?
I have solved the hardware and how the software needs to be handled.

Thanks!

[dhylands]

I think you'd need to add the 2 pins to pins.csv for your board. You'd also need to remove the oscillator and loading caps, and disable the LSE.

I think you need to set MICROPY_HW_RTC_USE_LSE to 0: https://github.com/micropython/micropyt ... oard.h#L23

[Meekdai]

I think you'd need to add the 2 pins to pins.csv for your board. You'd also need to remove the oscillator and loading caps, and disable the LSE.

I think you need to set MICROPY_HW_RTC_USE_LSE to 0: https://github.com/micropython/micropyt ... oard.h#L23

I am modifying the mpconfigboard.h file as follows

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#define MICROPY_HW_ENABLE_RTC       (0)
#define MICROPY_HW_RTC_USE_LSE      (0)

And the pins.csv file as follows

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C14,PC14
C15,PC15

Here is my code on REPL：

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from pyb import Pin
p_out = Pin('C14', Pin.OUT_PP)
p_out.high()

It works, thanks！