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SSI buffer reset

Bradley Higgin
Intellectual 535 points


Is there a way clear the RX and TX buffers within the SSI peripheral without calling SysCtlPeripheralReset()?

Tx,

Brad

  • 0
    TI__Guru**** 244440 points

    Hi Bradley,

    RX Buffer can be cleared by reading it out till the RXFE does not set.

    If the TX Data does not matter, then when enabled the TXFE will be set by the SSI when it completes the transmission.

    If however the requirement is not to do either of the above then SysCtlPeripheralReset is the only way of clearing both of them

    Regards

    Amit Ashara

  • 0 in reply to Amit Ashara
    Intellectual 535 points

    I have a situation where the the TX buffer DOES matter. I had an intermittent connection on SCLK, so my data wasn't entirely being clocked out. If I could clear the TX buffers when CS inactive, I would then be able to recover from a bit error, instead of corrupting all future data after the error...

  • 0 in reply to Bradley Higgin
    TI__Guru**** 244440 points

    Hi Bradley,

    The CS is controlled by the SSI. The only other method will be to use a GPIO to control the CS instead of using SSI to control it which can be done by making the CS as a GPIO.

    There is no clear FIFO mechanism

    Regards

    Amit