I2C bus in an automotive environment

[Amos K]

I'm starting a system design for my car that will need an interface
between each subsystem (alarm and locks, engine control, windows and
lights, stereo, displays ect...) I chose I2C over RS-485 because it is
widely accepted and easy to impliment with minimal parts. Has anyone
tried using it in an automotive environment? I'm concerned there might be
to much interference causing data transmittion problems.

Thanks for any input

-Amos

 

[Old Hag]

CAN bus is most often used in automotive.

I2C is not too good over long distance or noise environment.

If you use it tou will have to have a lot of error checking in your software
and assume lots of bad messages..



"Amos K" <abk131@lycos.com> wrote in message
newspr004cvzndjs71l@netnews.comcast.net...

I'm starting a system design for my car that will need an interface
between each subsystem (alarm and locks, engine control, windows and
lights, stereo, displays ect...) I chose I2C over RS-485 because it is
widely accepted and easy to impliment with minimal parts. Has anyone
tried using it in an automotive environment? I'm concerned there might be
to much interference causing data transmittion problems.

Thanks for any input

-Amos

 

[Reinhard Biegel]

Hi!

Since he wants to use I2C over RS-485, noise shouldn't be a problem, because
is uses balanced lines.

Reinhard


"Old Hag" <learningslowly@nospam.invalid> schrieb im Newsbeitrag
news:btr5rs$6mn$1@hercules.btinternet.com...

CAN bus is most often used in automotive.

I2C is not too good over long distance or noise environment.

If you use it tou will have to have a lot of error checking in your
software
and assume lots of bad messages..



"Amos K" <abk131@lycos.com> wrote in message
newspr004cvzndjs71l@netnews.comcast.net...

I'm starting a system design for my car that will need an interface
between each subsystem (alarm and locks, engine control, windows and
lights, stereo, displays ect...) I chose I2C over RS-485 because it is
widely accepted and easy to impliment with minimal parts. Has anyone
tried using it in an automotive environment? I'm concerned there might
be
to much interference causing data transmittion problems.

Thanks for any input

-Amos