Setup Guide

-R, --reg= Register
-o, --reg16= Register(16 bit addressing)
-V, --val= Value to be set
-W, --width= Width {8,16}
-b, --buspath= To specify the i2c bus e.g.: /dev/i2c-<bus number>
-a, --addr= Address
-F, --flag= Misc I2C flag, such as PEC write
-D, --display_size= Display size, {1,2,4} of bytesDisplay size, {1,2,4} of bytes
-I, --iteration= Iteration command execution
root@dellemc-diag-os:~#
Output
NOTE: The i2ctool does not automatically scan multiple MUXed segments. Before scanning, you MUST set the MUXes
to select the devices you want to see on the busses. By default, the i2ctool scans the i2c devices from the root MUX
where it sees the list of devices directly connected to the CPU MUX. The default scan function scans all connected
busses. By specifying a bus, you can limit the scan to one bus. In the scan data, RR indicates a reserved address which is
not used for any devices and UU indicates that the device is busy or mapped to the OS.
scan Output
root@dellemc-diag-os:~# i2ctool
DellEmc Diag - I2C Tool
version 2.0, x.xx.x.x-x
build, 2019/07/03,
Syntax: i2ctool <option>
To Scan the (Specific) I2C devices:=
i2ctool --scan [--bus=/dev/i2c-
<bus_number>]
(or)
i2ctool -n [-b /dev/i2c-<bus_number>]
To Test the pre-programmed configuration or from config file:=
i2ctool --test [--
config=<config_file_name>]
(or)
i2ctool -t [-f <config_file_name>]
Execute repeatedly command by count:=
i2ctool --iteration=max/<count> [option1]
[option2]...
(or)
i2ctool -I max/<count> [option1] [option2]...
Read:=
i2ctool --read --bus=/dev/i2c-<bus_number> --addr=<address> --reg=<register> --
count=<count> --width=<width> --display_size=<display_size> (or)
i2ctool -r -b /dev/i2c-<bus_number> -a <address> -R <register> -C <count> -W <width> -
D <display_size>
Read(16 bit addressing):=
i2ctool --read --bus=/dev/i2c-<bus_number> --addr=<address> --reg16=<register(16bit)>
[--reg_le] --count=<count> --width=<width> --display_size=<display_size> (or)
i2ctool -r -b /dev/i2c-<bus_number> -a <address> -o <register(16bit)> [-L] -C <count>
-W <width> -D <display_size>
Write:=
i2ctool --write --bus=/dev/i2c-<bus_number> --addr=<address> --reg=<regiser> --
width=<width> --val=<value> [--flag=<PEC>, ...] (or)
i2ctool -w -b /dev/i2c-<bus_number> -a <address> -R <register> -W <width> -V <value>
[-F <PEC>,...]
Write(16 bit addressing):=
i2ctool --write --bus=/dev/i2c-<bus_number> --addr=<address> --
reg16=<register(16bit)> [--reg_le] --val=<value>
(or)
i2ctool -w -b /dev/i2c-<bus_number> -a <address> -o <register(16bit)> [-L] -V <value>
Write without data:=
i2ctool --no_data --bus=/dev/i2c-<bus_number> --
addr=<address>
(or)
i2ctool -N -b /dev/i2c-<bus_number> -a <address>
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Dell EMC DIAG-OS tools