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Unread 16-02-2012, 16:25
StephenNutt StephenNutt is offline
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Re: Unable to read accelerometer

Quote:
Originally Posted by wireties View Post
Ours is also an 8-slot setup.

How long is your cable? I mean total length from cRIO to sidecar plus from sidecar to accelerometer. Our cable to the accelerometer is quite short, maybe that is the difference? I know I2C is designed to work over very short distances, it is more often used on the same circuit board or across a backplane. There are dedicated I2C drivers that work well over a couple meter long cable but more often the driver is really just some sort of logic port on a FPGA or a I2C peripheral and not as strong as the I2C spec recommends.


HTH
I'll measure it tonight, and create a short cable to check. Thanks for the help.