User Manual

I
2
CDriver User Guide 16
or red dot (NACK).
So for example the above sequence is showing
• Start, write to address 45
• Write byte 7A
• Repeated Start, read from address 45
• Read byte 00
• Read byte A2
• Stop
The above sequence is very typical for reading registers from an I
2
C Device.
Note that the final NACK (red dot) is not an error condition, but the standard
way of handling the last byte of read transaction.
5.2 The GUI
(TBD: describe how each button in the GUI works)
5.3 The command-line tool i2ccl
i2ccl is the same on all platforms.
The first parameter to the command is the serial port, which depends on your
operating system. All following parameters are control commands. These are:
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