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标题: 使用i2ctool 操作i2c总线 [打印本页]

作者: guoshaobin 时间: 2016-11-2 20:19
标题: 使用i2ctool 操作i2c总线
127|root@rk3288:/ # i2cdump -f -y 2 0x1a
i2cdump -f -y 2 0x1a
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 00 c4 00 d4 00 e0 00 00 00 08 00 00 00 80 00 ..?.?.?...?...?.
10: 03 00 00 00 b0 00 00 00 00 00 df 00 df 00 88 00 ?...?.....?.?.?.
20: 88 00 44 00 30 00 88 00 d8 00 0c 00 00 00 00 00 ?.D.0.?.?.?.....
30: 00 00 00 00 80 00 80 00 10 00 00 00 00 00 00 00 ....?.?.?.......
40: 4e 00 00 00 00 00 00 00 00 00 0f 00 00 00 00 00 N.........?.....
50: 00 00 20 00 80 00 80 00 00 00 4b 00 07 00 00 00 .. .?.?...K.?...
60: 00 00 00 00 02 00 20 00 05 00 00 00 30 00 00 00 ....?. .?...0...
70: 00 00 00 00 00 00 00 00 00 00 00 00 10 00 61 00 ............?.a.
80: 00 00 c4 00 d4 00 e0 00 00 00 08 00 00 00 80 00 ..?.?.?...?...?.
90: 03 00 00 00 b0 00 00 00 00 00 df 00 df 00 88 00 ?...?.....?.?.?.
a0: 88 00 44 00 30 00 88 00 d8 00 0c 00 00 00 00 00 ?.D.0.?.?.?.....
b0: 00 00 00 00 80 00 80 00 10 00 00 00 00 00 00 00 ....?.?.?.......
c0: 4e 00 00 00 00 00 00 00 00 00 0f 00 00 00 00 00 N.........?.....
d0: 00 00 20 00 80 00 80 00 00 00 4b 00 07 00 00 00 .. .?.?...K.?...
e0: 00 00 00 00 02 00 20 00 05 00 00 00 30 00 00 00 ....?. .?...0...
f0: 00 00 00 00 00 00 00 00 00 00 00 00 10 00 61 00 ............?.a.
root@rk3288:/ # i2cset -f -y 2 0x1a 0x00 0x12
i2cset -f -y 2 0x1a 0x00 0x12
root@rk3288:/ # i2cget -f -y 2 0x1a 0x00
i2cget -f -y 2 0x1a 0x00
0x00

通过i2cset设置里寄存器的值、读取出来为什么还是原始的值

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