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Strange SPI failure

Question asked by Mike Silva on Oct 19, 2011
Latest reply on Oct 21, 2011 by Mike Silva
I'm playing around with SPI (SPI2 on the VL discovery board), and am able to configure the chip as a master and I see the clock and data outputs.  Right now I'm using polling to transmit - interrupts can come later.  What is strange is that after a few seconds of running, the SPI output not only stops, but the output pins (SCK and MOSI) go floating.  I can tell this because they get wavy on the scope.  If I reset the discovery board everything works again for a few seconds.

I should add that the rest of my program (I'm reading buttons and an ADC channel and updating an LCD character display) continues to work after the SPI stops.

Any thoughts on what might be going on here?