How to configure GPIO to input + pullup from userspace?

Autonomous Machines Jetson & Embedded Systems Jetson TX2
1

Dear support team,

I’d like to configure pin A9 as input with internal pullup.

From this and this I learned I have to do the following to set it to input:

echo 488 > /sys/class/gpio/export
echo in > /sys/class/gpio/gpio488/direction

Kindly tell me how to activate the internal pullup resistor from userspace.

Thank you.

3

We’re checking with internal team, will update to you once clarified.

Thanks

5

AFAIK, pullup is from pinmux registers and not GPIO registers.
So sysfs does not have pullup support for internal pullup.

7

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