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SPI communication between TM4c129

SL
Intellectual 410 points

Hi,

We have a board where there's three TM4c129 on it.  One is a SPI master and the other two are SPI slaves.  The master will send data to the two slaves every 10ms or so.  We're coming across an issue where it looks like the data in the slave FIFO is overflowing.  If we have a breakpoint in the master after a data packet is sent, about 17 bytes of data, then the transmission is fine and the slave receives all the data correctly.  But if we remove the breakpoint, we do not get the complete data and we see the overflow interrupt being set.

So the question here is if anyone has suggestion on how we can accomplish this?  We've tried multiple ways but no luck so far.  Any help or suggestion would be appreciated.

Thanks!