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LSM303AGR self test always fails

Question asked by Christophe MARIN on Mar 29, 2018
Latest reply on Apr 5, 2018 by Christophe MARIN

Hello, I'm using an LSM303AGR thru I2C, and after a little struggling, everythings looks fine. I can read any of the 6 axes with what seems to be the right values, and the read values react correctly when I tild my board.

So, why am I always getting a failure when executing the self-test procedure given in the datasheet ? I notice that the kind of failure depends on the tilt of the PCB: I sometimes gets a fail with the magnetometer, and other times I gets a fail with the accelerometer: the read values doesn't comply with the expected range...

Any idea, anyone ?