ModalAI Forum

Hi,

I'm trying to read values from GPIO 1146 (Pin 6 on J10), but the value always remains the same regardless of whether I connect it to 3.3V (high) or 0V (low).

I successfully changed the direction to output and verified using a multimeter that writing '0' or '1' correctly changes the voltage.

However, when I switch the GPIO to input mode, reading /sys/class/gpio/gpio1146/value always returns the same value, regardless of the external voltage applied.

It seems that the value read from /sys/class/gpio/gpio1146/value is actually determined by the contents of active_low, rather than the actual pin state.

voxl2:/sys/class/gpio/gpio1146$ cat /sys/class/gpio/gpio1146/direction
in
voxl2:/sys/class/gpio/gpio1146$ cat /sys/class/gpio/gpio1146/value
0

Is there a known issue with reading input values on this GPIO? Do I need to configure anything else (e.g., pull-up/down settings) to get correct readings?

Thanks!

Hello,
On this video: https://www.youtube.com/watch?v=gqlSKRP8prc
you've showed the voxl-mapper service on a drone equipped with VOXL.
I assume the mapper is running at real time and do not need to be run as a post process?
I was wondering if you can elaborate at the CPU usage this service takes in order to create a map as in the video.
If you can share this data, both on the VOXL and VOXL2, that would be great!

Thanks!