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TMS320F28335: SPI channel issue

c c
Prodigy 50 points
Part Number: TMS320F28335


Hi ,

I met an issue that a docking system(master) sent 1000 messages to our system(slave) within 1s by SPI channel  , afterward the SPI channel couldn't communicate any more. we need to restart our system to rebuild the channel . 

The SPI buffer is 16 bits.

When an interrupt take a 16bits message happened , our system would handle the message and then clear overflow by set the RXFFOVFCLR = 1 and RXFFINTCLR = 1  , so could you help to check if the instant batch messages would damage the channel ?

  • 0
    TI__Mastermind 29441 points

    Hi,

    c c said:
    When an interrupt take a 16bits message happened , our system would handle the message and then clear overflow by set the RXFFOVFCLR = 1 and RXFFINTCLR = 1

    I believe this will be enough to clear the overrun error from the SPI.

    c c said:
    afterward the SPI channel couldn't communicate any more

    Can you give more information on what this means? What exactly stops working? Do you have any additional debug information?