Multi camera Adapters for Jetson Nano

Dependency sudo pip install Jetson.GPIO

Setting User Permissions In order to use the Jetson GPIO Library, the correct user permissions/groups must be set first.

Create a new gpio user group. Then add your user to the newly created group.

sudo groupadd -f -r gpio
sudo usermod -a -G gpio $USER
Install custom udev rules by copying the 99-gpio.rules file into the rules.d directory:

sudo cp /opt/nvidia/jetson-gpio/etc/99-gpio.rules /etc/udev/rules.d/

Please note that for the new rule to take place, you may either need to reboot or reload the udev rules by issuing this command:

sudo udevadm control --reload-rules && sudo udevadm trigger
sudo reboot

Run the Demo

sudo python JetsonNanoAdapterTestDemo.py

This demo will capture an image from each camera and save it to a local folder.

Setting User Permissions In order to use the Jetson GPIO Library, the correct user permissions/groups must be set first.

import RPi.GPIO as gp # sudo pip install Jetson.GPIO #https://pypi.org/project/Jetson.GPIO/#description
import os

gp.setwarnings(False)
gp.setmode(gp.BOARD)

gp.setup(7, gp.OUT)
gp.setup(11, gp.OUT)
gp.setup(12, gp.OUT)

def main():
    print"Start testing the camera A"
    i2c = "i2cset -y 1 0x70 0x00 0x04"
    os.system(i2c)
    gp.output(7, False)
    gp.output(11, False)
    gp.output(12, True)
    capture(1)
    print"Start testing the camera B"   
    i2c = "i2cset -y 1 0x70 0x00 0x05"
    os.system(i2c)
    gp.output(7, True)
    gp.output(11, False)
    gp.output(12, True)
    capture(2)
    print"Start testing the camera C"
    i2c = "i2cset -y 1 0x70 0x00 0x06"
    os.system(i2c)
    gp.output(7, False)
    gp.output(11, True)
    gp.output(12, False)
    capture(3)
    print"Start testing the camera D"
    i2c = "i2cset -y 1 0x70 0x00 0x07"
    os.system(i2c)
    gp.output(7, True)
    gp.output(11, True)
    gp.output(12, False)
    capture(4)

def capture(cam):
    #cmd = "raspistill -o capture_%d.jpg" % cam
    cmd = "nvgstcapture-1.0 -A --capture-auto -S 0 --image-res=3 --file-name=capture_%d.jpg" % cam
    os.system(cmd)

if __name__ == "__main__":
    main()

    gp.output(7, False)
    gp.output(11, False)
    gp.output(12, True)