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TMS320F28027: SCI communication in boot loader mode fails in higher baud rate

RAVICHANDRAN PALANI
Prodigy 10 points
Part Number: TMS320F28027

Hi,

I am working on the design using TMS320F28027 controller, i send the serial data using SCI interface at baud rate of 1200. Before this i pull the micro controller to boot loader mode.
I saw that the data send to the RX pin is clear but the micro controller unable to understand baud rate and the data which read from the SCI register is some junk data.

Our requirement is to communicate at higher rate greater than 9600 baud.

Is there any special software or hardware settings am i missing?

We used serial transmission software and USB to serial converter is used.

TO level the signal and isolation we used optocouplers before entering in to the RX pin of the controller.

regards,

Ravichandran.

  • 0
    TI__Genius 17315 points
    Ravichandran,

    Please check you SCI code and make sure that autobaud-detect is enabled and reference the "Autobaud-Detect Sequence" section in the
    F2802x SCI user's guide:

    www.ti.com/lit/SPRUGH1

    Also, please see the "SCI_Boot Function" in the Boot ROM user's guide:

    www.ti.com/lit/SPRUFN6

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

    - Ken