1，安装iic-tools

sudo apt install i2c-tools -y

2,查看有几条iic总线

[root@sino-platform:/root]# ls /dev/i2c-
i2c-0  i2c-1  i2c-2  i2c-3

3，查看i2c命令

[root@sino-platform:/root]# i2c
i2cdetect  i2cdump    i2cget     i2cset

4,iic-help命令

[root@sino-platform:/root]# i2cdetect 
BusyBox v1.27.2 (2020-11-24 16:09:44 CST) multi-call binary.

Usage: i2cdetect [-F I2CBUS] [-l] [-y] [-a] [-q|-r] I2CBUS [FIRST LAST]

Detect I2C chips.

        I2CBUS  i2c bus number
        FIRST and LAST limit the probing range

        -l      output list of installed busses
        -y      disable interactive mode
        -a      force scanning of n