Com+Dio Port Connector (Cn7+Cn8/Sw2) - Asus AAEON BOXER-8651AI User Manual

2. Set GPIO direction to input mode
# echo "in" > /sys/class/gpio/PY.02/direction
# cat /sys/class/gpio/PY.02/value
Unexport PY.02
# echo PY.02 > /sys/class/gpio/unexport
2.4.9

COM+DIO port Connector (CN7+CN8/SW2)

DB-15 Port (Female)
Pin RS-232
1
2 RXD
3 TXD
4
5 GND
Pin Function
6 GPIO13
7 GPIO11
8 GPIO09
9 GPIO01
10 GND
11 I2S0_LRCK
12 I2S0_SDIN
13 I2S0_SDOUT
Chapter 2 – Hardware Information
#Read GPIO input value
RS-422
TX-
TX+
RX+
RX-
DTS Name
PH.00
PQ.06
PAC.06
PQ.05
PI.02
PI.01
PI.00
RS-485
D-
D+
GPIO No.
391
454
492
453
401
400
399
18