TMS320F280039C: SPI Overflow Issues

Derek Cook

Part Number: TMS320F280039C

Hello,

My SPI is overflowing and it seems when the RXFFOVF flag is present the RX interrupt for FIFO LVL 2 stops working. I believe I need to set RXFFOVFCLR to 1 to resolve this. How do I do that? Is there an API command? Does this set RXFFOVFCLR = 1?

SPI_clearInterruptStatus(REPA_DSPI_SLAVE_BASEADDR, SPI_INT_RXFF_OVERFLOW);

Thanks for the help!

over 3 years ago

+1 Manoj Santha Mohan over 3 years ago

TI__Guru 55700 points

Derek,

You need to do two things.

1) Empty the SPIRX FIFO by reading all the contents. This is done to remove the source of interrupt.

2) Then, clear RXFFOVF flag by using SPI_clearInterruptStatus(REPA_DSPI_SLAVE_BASEADDR, SPI_INT_RXFF_OVERFLOW);

Regards,

Manoj

0 Derek Cook over 3 years ago in reply to Manoj Santha Mohan

Intellectual 880 points

Thanks Manoj this is what I did. Just making sure this is all I needed to do.

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TMS320F280039C: SPI Overflow Issues