Advantech ROM-3420CD-MDA1E, Руководство пользователя

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ROM-3420 User Manual 14
If you’d like to change display monitor, please refer to below table:
3.1.7 I2C Test
#i2cdetect
‐
l
i2c
‐
0 i2c imx
‐
i2c I2C adapter
i2c
‐
1 i2c imx
‐
i2c I2C adapter
i2c
‐
2 i2c imx
‐
i2c I2C adapter
i2c
‐
3 i2c i2c
‐
1
‐
mux (chan_id 0) I2C adapter
i2c
‐
4 i2c i2c
‐
1
‐
mux (chan_id 1) I2C adapter
i2c
‐
5 i2c i2c
‐
1
‐
mux (chan_id 2) I2C adapter
i2c
‐
6 i2c i2c
‐
1
‐
mux (chan_id 3) I2C adapter
Try the command below to know if there is any devices connected to i2c bus 5.
i2cdetect
‐
y 5
0 1 2 3 4 5 6 7 8 9 a b c d e f
00:
‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐
10:
‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐
20:
‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐
30:
‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐
40:
‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐
50: UU
‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐
60:
‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐
70: UU
‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐ ‐‐
The 0x50 is the HDMI address. Try the command below to know if the I2C bus is
working or not.
i2cdump
‐
f
‐
y 5 0x50
No size specified (using byte-data access)
0 1 2 3 4 5 6 7 8 9 a b c d e f 0123456789abcdef
00: 00 ff ff ff ff ff ff 00 04 69 fd 22 03 01 01 01 ........?i?"????
10: 16 17 01 03 80 30 1b 78 2a 2a c5 a4 56 4f 9e 28 ?????0?x**??VO?(
20: 0f 50 54 b7 ef 00 d1 c0 81 40 81 80 95 00 b3 00 ?PT??.???@???.?.
30: 71 4f 81 c0 81 00 02 3a 80 18 71 38 2d 40 58 2c qO???.?:??q8
‐
@X,
40: 45 00 dc 0c 11 00 00 1e 00 00 00 ff 00 44 35 4c E.???..?.....D5L
50: 4d 51 53 30 39 36 30 34 38 0a 00 00 00 fd 00 32 MQS096048?...?.2
60: 4b 18 53 11 00 0a 20 20 20 20 20 20 00 00 00 fc K?S?.? ...?
video16 HDMI
video17 HDMI overlay
video18 VGA
video19 VGA overlay
video20 LVDS 0