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mma8453 accelerometer - interrupt always active

Question asked by bergo on May 26, 2013
Latest reply on May 31, 2017 by Jose Silva

Hey freescalers,

I'm using mma8453 accelerometer in a current project I'm working on.

 

I'm setting the interrupt INT 1 to be active low (once setting I can see in the oscilloscope that the INT 1 line is high).

As soon as I finish the rest of the configurations I detect an interrupt, and to clear the interrupt I read the register INT_SOURCE, but I read all 0's, ie. no interrupt to be handled.

looking at the oscilloscope I can see the INT 1 line is now low. and stays low.

 

I wonder what might be the cause for that and how can I force clean the interrupt line?

 

Thanks in advance,

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