Apex AD10 DI Usage

Hardware Specification

Pin Definition

Function	DB9 PIN Number	Description	Device Node
DI_0	1	GPIO IN	/dev/gpio/di0
DI_1	2	GPIO IN	/dev/gpio/di1
DO_0	3	GPIO OUT	/dev/gpio/do0
DO_1	4	GPIO OUT	/dev/gpio/do1
DO_2	5	GPIO OUT	/dev/gpio/do2
GND	6-9	Ground

Function	DB9 PIN Number	Description	Device Node
DO_3	1	GPIO OUT	/dev/gpio/do3
DI_2	3	GPIO IN	/dev/gpio/di2
DI_3	5	GPIO IN	/dev/gpio/di3
GND	6/8	Ground

Electrical Characteristics

	Description
Vin	Input Voltage
GND	Ground
A	Anode
C	Cathode

Vin Voltage Range	Result
1～12V	high level=1
0～0.8V	low level=0
> 12V or < 0 V	Not supported and may damage hardware.

Method of Application

System version below 5.x.x-x.x.x

The example of using the GPIO interface is as follows.

# switch to root
sudo su -
# Read Data(DI)
cat /sys/class/gpio/<device node name>/value
# Example: cat /sys/class/gpio/gpio339/value

System version above 6.x.x-x.x.x

The usage of GPIO is as below

sudo /opt/miivii/features/gpio/bin/miivii_get_di_value <DI number>
#<DI number>: Represents the sequence number of the DI. 0 represents DI0, 1 represents DI1, and so on.
#The command return value is the current level value read from the DI, where 0 represents low level and 1 represents high level.

#Example: Read the input of DI0
#sudo /opt/miivii/features/gpio/bin/miivii_get_di_value 0

Compile sample code

cp -r /opt/miivii/features ~/
cd ~/features/gpio
sudo make;