I’m working on creating an image for the Nano using the Yocto Project and Bitbake. As part of that, I’m trying to include Jetson.GPIO in the image at builtime.
I have the following recipe for the package
SUMMARY = "Recipie to embedded the Python PiP Package Jetson.GPIO" HOMEPAGE ="https://pypi.org/project/Jetson.GPIO" LICENSE = "MIT" LIC_FILES_CHKSUM = "file://PKG-INFO;md5=a8fc9772bcd540559bdffee9f34755e7" inherit pypi setuptools3 PYPI_PACKAGE = "Jetson.GPIO" SRC_URI[md5sum] = "a2ade30de4627f724f98843eca0e222d" SRC_URI[sha256sum] = "f5d1103bbc2701c0b1603d31ea9043ca9ab670d6204846aa2ff25c2302c91fdc"
This installs the package correctly, but user permissions are still a bit weird. I can confirm that I’ve created a group called “gpio” and that the user is a member using the
Running the following shows permissions on export/unexport
--w------- 1 root root 4096 Feb 7 15:50 /sys/class/gpio/export
If I try importing the package in python, I receive a permissions issue saying the user does not have permissions. However it works if I run python with sudo.
I’ve attempted copying
/etc/udev/rules.d and have run the command to reload and trigger the rule change. Still doesn’t work though.
The only success I’ve had is if I attempt to run the bash commands listed inside the
99-gpio.rules file manually. After this, the user has gpio function without
I can always switch it to a more manual install and installing from source, but just felt the pypi method would be easier. Any thoughts?
Note: image is based on
core-image-minimal and uses
meta-tegra for the hardware bsp.
Can provide any other information on the build as needed! Thanks guys.
Edit I went ahead and tried installing using
sudo python3 setup.py install and copying over the rules before running the
udevadm commands. Still not working
Edit 2 So I realized that
meta-tegra doesn’t expose the
spidev device and there was a line in
99-gpio.rules that affects this device. By commenting out the line, copying it over into rules.d and running reload/trigger + a restart it’s working properly. Still a bit weird