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SPI communication between two MCF51QE128

Question asked by NICOLAS LOCATELLI on Jun 7, 2011
Latest reply on Jun 21, 2011 by NICOLAS LOCATELLI

Hi everyone,

 

I'm facing a little trouble establishing a SPI communication between two MCF51QE128.

I used the CodeWarrior processor expert to make the appropriate beans for both, one is the master and the other is configured as a slave. The beans configurations are apparently correct, clock speed is valid, and electrical link between pins is verified.

 

But the slave is not executing the SPI Interruption Service Routine though clock and data are being sent from master to slave. The SPI interruption in the slave is, of course, enabled.

 

Can anyone help with this issue? I don't know what else to do.

 

You know what, it's solved! It was just the slave select timing, we had to pull it down much more in advance.

 

Thanks a lot.

Nicolas

 

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