GPIO table for Jetson Nano

Robotics & Edge Computing Jetson & Embedded Systems Jetson Nano
1

I was looking for GPIO table such as this:

But for ALL of the I/O broken out on module connector. I did only find GPIO spreadsheet but it does not contain information how it is defined in Linux fs.

2

hello smaztom,

suggest you access Jetson Nano Developer Kit 40-Pin Expansion Header Configuration to check the steps to handle 40-pin header by using the Jetson Nano Developer Kit Pinmux.
thanks

3

Thank you for answer, i get now what that pinmux thing actually does. But I do not intend to use 40-pin header. I’m making my custom board.
I did look into default configuration, and i think that i’m fine with default pinmux configuration.
I now know how to initialize GPIO, but what i actually want is to know how to actually access it.
I was hoping to get such information from linux for tegra GPIO python lib, but it appears to be REALLY incomplete.
For example i would like to know how GPIO3_PH.06 expands in

/sys/class/gpio/export
4

hello smaztom,

you’ll need to export the GPIO number then you could control it via sysnode.
suggest you refer to Tegra Linux Driver Package TX2 Adaptation Guide and check the [GPIO Changes] session to have more details for GPIO number calculation.
for example,

# generate a gpio220 sysnode
echo 220 > export
# enable the gpio
echo out > direction && echo 1 > value