DSBOX-N2 Industrial Input Output Interface Tutorial
1- The pinout of I/O connector
2- Example of an input application
3- Example of an output application
OS: Jetpack 4.5(L4T-32.5)
This blog post is suitable for:
• NVIDIA Jetson Nano SOM with DSBOARD-NX2 Carrier Board
In this blog post, we will test the IIO(Industrial Input Output) interface of DSBOX-N2.
First, let's look over the IO connector. On the connector, there are 3 isolated outputs, 2 isolated inputs and 1 isolated ground. When using IIO, always double check which ground pin you are using. You must use isolated ground for IIO applications.
Digital IN0 Test
Find sysfs equivalent of the connected input pin from the table. For this setup it is gpio-504. After proper hardware connection, we can continue on the software side.
Set gpio504 (DIGITAL_IN0) as input and read sensor value. To do this, you could use the commands below.
sudo echo 504 > /sys/class/gpio/exportsudo echo in > /sys/class/gpio/gpio504/directionsudo cat /sys/class/gpio/gpio504/value
Digital OUT0 Test
Find sysfs equivalent of the connected output pin from the table below. For this setup it is gpio-508. After proper hardware connection with industrial LED, we can continue on the software side.
Then set gpio508 (DIGITAL_OUT0) as output and control light state. To do this, you could use the commands below.
sudo echo 508 > /sys/class/gpio/exportsudo echo out > /sys/class/gpio/gpio508/direction
To short Output:
sudo echo 1 > /sys/class/gpio/gpio508/value
To open Output:
sudo echo 0 > /sys/class/gpio/gpio508/value
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