I²CDriver: An easy-to-use tool for controlling I²C devices
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I²CDriver is an easy-to-use, open source tool for controlling I²C devices.
It works with Windows, Mac, and Linux, and has a built-in color screen
that shows a live "dashboard" of all the I²C activity.
It uses a standard FTDI USB serial chip to talk to the PC, so no special
drivers need to be installed.
The board includes a separate 3.3 V supply with voltage and current
monitoring.
I²C is EverywhereIt’s in every phone, in your embedded electronics,
in every microcontroller, Raspberry Pi, and PC motherboard. It’s a mature
technology - still going strong after 36 years.
Because it’s everywhere, I²C is used by everyone from novices to embedded
designers.
But the common element of everyone’s I²C experience is struggle.
Instead of being easy, I²C very often feels really difficult.
Because there are so many ways for I²C to go wrong, things rarely "just
work" and instead involve some painful debugging.
I²CDriver Makes I²C Much More FriendlyWhile other I²C tools might offer a couple of LEDs, I²CDriver has a clear
logic-analyzer display of the signal lines plus a graphical decoding of
the I²C traffic.
The I²C traffic decoder
In addition, it continuously displays an address map of all attached I²C
devices,
so as you connect a device, it lights up on the map. You’ll never have to ask "is
this thing even switched on?" again.
The heat map shows all 7-bit I²C addresses
The current and voltage monitoring let you catch electrical problems
early. The included color-coded wires make hookup a cinch; no pinout
diagram is required. It includes a separate 3.3 V supply for your devices, a
high-side current meter, and programmable pullup resistors for both I²C
lines.
There are three I²C ports, so you can hook up multiple devices without any
fuss.
I²CDriver comes with free (as in freedom) software to control it from:
a GUI
the command-line
C and C++ using a single source file
Python 2 and 3, using a module
Do More With I²CDriver
I²CDriver driving three 8x8 LED modules
By controlling I²C hardware using the PC tools you’re most comfortable
with, you can get devices
doing what you want in a fraction of the development time. Calibrating
devices like accelerometers, magnetometers, and gyroscopes is much simpler
and faster when done directly on the PC through I²CDriver.
I²CDriver ships with Python examples using small groups of I²C devices to
make something useful.
Watch the Whole NetworkAs well a a live decode of the traffic,
the built in display shows a heatmap of all active network nodes.
So in an I²C network with multiple devices, you can see at a glance which
ones are the most active.
See what I²C is Doing InstantlyWhen an I²CDriver is connected to an existing I²C bus, it "snoops" the
traffic and displays it on the screen.
This provides an excellent too
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