Hi Bernhard,
There are many cheap I2C adapter projects (mostly USB though). One of
the simple ones (i2c-tiny-usb) is included in the kernel, while LinkM
(https://github.com/todbot/LinkM) stayed userspace.
As regarding to cheap serial line based adapters, there are two I have
seen before
(http://www.gedanken.org.uk/electronics/rs232-converters/i2c.html and
http://www.robot-electronics.co.uk/acatalog/USB_I2C.html) and both
define a different protocol.
Personally I would suggest to try follow one of those protocols to avoid
creating a new one and would be happy to see an open sourced Arduino
sketch as well.
I am afraid handling serial devices within a i2c kernel driver might be
tricky and purists probably dislike the idea.
Best,
Alex
Bernhard Kraft wrote:
Hi,
For a project I needed to communicate with external hardware via the
I2C protocol. I took a look at the existing drivers in the linux
kernel source "drivers/i2c/busses".
Instead of buying yet another interface dongle (this time for I2C) I
decided to use an Arduino with an apropriate sketch as I2C adapter.
Currently I access the I2C adapter (Arduino) via a custom program
reading/writing to /dev/ttyACM0.
Do you think it would make sense to add an I2C driver to the Linux
kernel for an "Arduino as I2C adapter" solution?
Or could you propose another solution? Maybe just an "external" module
like the nvidia kernel module?
greetings,
Bernhard
_______________________________________________
devel mailing list
devel@xxxxxxxxxxxxxxxxxxxxxx
http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
