Advantech ROM-5620 - I2 C Test

27 ROM-5620 User Manual
Chapter 4 Software Functionality
UART 1: Change CN27~CN30 jumper to (1-2 short)
B. RS-422 & RS-485 Test:
Change SW7 jumper to switch modes: (1ON 2ON: RS-422, 1OFF 2 ON: RS-485)
Change CN27~CN30 jumper to (1-2 short)
Test RS-485 with RS-485 device or ADAM-4520.
4.1.6 I
2
C Test
Check I
2
C Device (audio codec: 3-000a)
I
2
C set and get
#stty -F /dev/ttyLP1 -echo -onlcr 115200
#cat /dev/ttyLP1 &
#echo test > /dev/ttyLP1
#./enable485 /dev/ttyLP1
#stty -F /dev/ttyLP1 speed 115200 ignbrk -brkint -icrnl -imaxbel -opost -
onlcr -isig -icanon -iexten -echo -echoe -echok -echoctl -echoke
#cat /dev/ttyLP1 &
#echo test > /dev/ttyLP1
root@imx8qxprom5620a1:~# i2cdetect -y 3
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: - - - - - - - - - - - - - - UU - - - - - - - - - -
10: - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
20: - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
30: - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
40: - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
50: - - - - - - - - - - - - - - UU - - - - - - - - - - - - - - - -
60: - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
70: UU - - - - - - - - - - - - - -
root@imx8qxprom5620a1:~# i2cset -f -y 3 0x0a 0 0xff00 w
root@imx8qxprom5620a1:~# i2cget -f -y 3 0x0a 0 w
0x11a0