Apex Dual Orin Digital Output Usage

Hardware Connection

Function Label

Pin Label

Hardware Specification

	Description
Vref	User external power supply, 3.3V~36V
R	User external pull-up resistor. R＞Vref/0.5A（0.5A is max drive current of DO） R is Resistor package power withstand ＞ (Vref/R)²*R
Vout	When the output logic is high, Vout = Vref When the output logic is low, Vout = 0
emitt	Short for emitter.
colle	Short for collector.

Function and Device Node

Function	Device Node
M_DO_0	gpio286
M_DO_1	gpio287
M_DO_2	gpio288
M_DO_3	gpio289
S_DO_4	gpio310
S_DO_5	gpio313

Usage

The example of using the GPIO interface is as follows.

# Use root
sudo su -

# Set output to high
echo 1 > /sys/class/gpio/<device node>/value
# Example: echo 1 > /sys/class/gpio/gpio339/value

# Set output to low
echo 0 > /sys/class/gpio/<device node>/value
# Example: echo 0 > /sys/class/gpio/gpio339/value