DIO

Hardware Specification

Isolated Digital Input

Logic Level	High 3V to 24V Low 0 to 0.8V
Isolated Voltage	2500 Vrms
Input Resistance	1kΩ
Operation Mode	Polling

Isolated Digital Output

Logic Level	The digital output is implemented as an open-drained sink type to max out the flexibility to control external devices requiring various voltage control signals. The logic level high depends on the external power source of the open-drained circuit.
Sink Current (per Channel)	500 mA
Isolated Voltage	1500 Vrms
Operation Mode	Polling

Using DIO in User Space (JetPack 5.x & 6.x)

	GPIO Number	GPIO Name
DI0	PCC.02	330
DI1	PCC.03	331
DO0	PI.00	399
DO1	PI.01	400
DO2	PI.02	401
DO3	PH.07	398

Jetpack 5.1.1

sudo cat /sys/kernel/debug/gpio

####

### Check NAME and GPIO Mapping by
# sudo cat /sys/kernel/debug/gpio

sudo -s

DI0_NAME=PCC.02
DI0_GPIO=330

DI1_NAME=PCC.03
DI1_GPIO=331

DO0_NAME=PI.00
DO0_GPIO=399

DO1_NAME=PI.01
DO1_GPIO=400

DO2_NAME=PI.02
DO2_GPIO=401

DO3_NAME=PH.07
DO3_GPIO=398

### initDO
echo $DO0_GPIO > /sys/class/gpio/export
echo out > /sys/class/gpio/$DO0_NAME/direction

echo $DO1_GPIO > /sys/class/gpio/export
echo out > /sys/class/gpio/$DO1_NAME/direction

echo $DO2_GPIO > /sys/class/gpio/export
echo out > /sys/class/gpio/$DO2_NAME/direction

echo $DO3_GPIO > /sys/class/gpio/export
echo out > /sys/class/gpio/$DO3_NAME/direction

### Make DO HIGH 
echo 1 > /sys/class/gpio/$DO0_NAME/value
echo 1 > /sys/class/gpio/$DO1_NAME/value
echo 1 > /sys/class/gpio/$DO2_NAME/value
echo 1 > /sys/class/gpio/$DO3_NAME/value

### Make DO LOW
echo 0 > /sys/class/gpio/$DO0_NAME/value
echo 0 > /sys/class/gpio/$DO1_NAME/value
echo 0 > /sys/class/gpio/$DO2_NAME/value
echo 0 > /sys/class/gpio/$DO3_NAME/value

# Check DO Values
sudo cat /sys/kernel/debug/gpio | grep $DO0_NAME
sudo cat /sys/kernel/debug/gpio | grep $DO1_NAME
sudo cat /sys/kernel/debug/gpio | grep $DO2_NAME
sudo cat /sys/kernel/debug/gpio | grep $DO3_NAME


### initDI

echo $DI0_GPIO > /sys/class/gpio/export
echo in > /sys/class/gpio/$DI0_NAME/direction

echo $DI1_GPIO > /sys/class/gpio/export
echo in > /sys/class/gpio/$DI1_NAME/direction

### Read DI Value

sudo cat /sys/kernel/debug/gpio | grep $DI0_NAME
sudo cat /sys/kernel/debug/gpio | grep $DI1_NAME

Jetpack 6.0

1. Setting GPO valueComment

# Set PCC.02 to 1
PIN=PCC.02
sudo pkill -f -- "$(sudo gpiofind $PIN)"
sudo gpioset -m signal $(sudo gpiofind $PIN)=1 &
​
# Set PCC.02 to 0
PIN=PCC.02
sudo pkill -f -- "$(sudo gpiofind $PIN)"
sudo gpioset -m signal $(sudo gpiofind $PIN)=0 &

1. Read GPIO valueComment

# Using PCC.02 as an example
sudo gpioget $(sudo gpiofind PCC.02)