Advantech EPC-R3720, User Manual, Page: 27 / 51

39 RSB-3720 User Manual
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3.5.3 RS-485 Test
Step 1: Set GPIO#496, GPIO#497 Set to 0,1
Step 2: Test RS-485 with Adam-4520. Connect Adam-4520 with COM1 with
1700100250 DB9 as the following:
Adam-4520 Pin 1: Data- connect to DB9 Pin 1: COM_DCD. Adam-4520 Pin 2: Data+
connect to DB9 Pin 3: COM_RXD..
3.6 I
2
C
Step 1: Check i
2
c device(audio codec : 0-000a)
Step 2: I
2
c set and get
3.7 USB
USB disk test (USB2.0/ USB3.2 Gen 1 By 1 port)
Step 1: After inserting usb disk to USB 2.0 port or USB 3.2 Gen 1 By 1 port,
issue the below command (lsusb -t) to check if the USB device is listed.
#./enable485 /dev/ttymxc2
#stty -F /dev/ttyLP1 speed 115200 ignbrk -brkint -icrnl -imaxbel -opost -onlcr -isig -icanon -
iexten -echo -echoe -echok -echoctl -echoke
#cat /dev/ttymxc2 &
#echo test > /dev/ttymxc2
root@imx8mprsb3720a1:~# i2cset -f -y 0 0x0a 0 0xff00 w
root@imx8mprsb3720a1:~# i2cget -f -y 0 0x0a 0 w
0x11a0