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CCS/LAUNCHXL-F28069M: SCIA not working in TMS320F28069M

Abdul Rasheed28
Intellectual 480 points
Part Number: LAUNCHXL-F28069M
Other Parts Discussed in Thread: MOTORWARE

Tool/software: Code Composer Studio

How can I make it working? I've configured motorware18.0 project 'proj_lab13b.c' as explained in 'motorware_hal_tutorial' with interrupt. I implemented the echo back set up. But not getting any data. While debugging it is found that program control enter into SCI ISR once and returns a data '00'(in HEX). but after that it does not enter into SCI ISR. What should I do?

NB:- I'm using boostxl-drv8301rev.b. Position control works fine. ie. no issue with ADC interrupt preority change.

Thank you

  • 0
    TI__Genius 17315 points

    Abdul,

    Typically, if you can enter an ISR once and cannot enter it again, the interrupt was not acknowledged.  Check your ISR to make sure it was acknowledged.

    For example, for TX:

    SciaRegs.SCIFFTX.bit.TXFFINTCLR=1;  // Clear SCI Interrupt flag
    PieCtrlRegs.PIEACK.all|=0x100;      // Issue PIE ACK

    And for RX:

    SciaRegs.SCIFFRX.bit.RXFFOVRCLR=1;   // Clear Overflow flag
    SciaRegs.SCIFFRX.bit.RXFFINTCLR=1;   // Clear Interrupt flag

    PieCtrlRegs.PIEACK.all|=0x100;       // Issue PIE ack

    I hope this helps. If this answers your question, please click the green "Verified Answer" button. Thanks.

    - Ken

  • 0 in reply to Ken Schachter
    TI__Genius 17315 points

    Abdul,

    It's been a while since I have heard from you last. Therefore, I am assuming that my last reply resolved your issue and I will close this thread. If this isn’t the case, please reject this resolution or reply to this thread. If this thread locks, please make a new thread describing the current status of your issue. Thank you.

    - Ken

  • 0 in reply to Ken Schachter
    Intellectual 480 points

    Ken,

    Sorry for the delay. Actually there is some problem while configuring SCIA on LaunchxlF28069M. So I tried with SCIB and it works fine.

    Thank you