Hello,
I found a strange output behaviour of the GPIO21 of the RP2350A - when I set output to 0 I see on the oscilloscope about 1.9V at the output.
My simplified code which reproduce this situation is next:
I tried it with another Pico2 board - and got the same 1.9V output level. All other outputs work well.
Any idea where it could be a problem?
I found a strange output behaviour of the GPIO21 of the RP2350A - when I set output to 0 I see on the oscilloscope about 1.9V at the output.
My simplified code which reproduce this situation is next:
Code:
#include "pico/stdlib.h"int main() { gpio_init(21);gpio_set_dir(21, GPIO_OUT);gpio_put(21, 0); while (true) { }}Any idea where it could be a problem?
Statistics: Posted by Irek — Thu Oct 02, 2025 10:37 am