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AWR2944: UART activation identification in SBL code

Neelaveni Mamilla
Prodigy 50 points
Part Number: AWR2944

Hello TI team,

We would like to check if we can identify that UART line is active when external utility is connected for flashing. We want to add this check in SBL code so that this piece of code is not always executed rather only when UART line active. This would help in saving the startup time. Currently this UART flashing related code is taking approximately 1 to 2sec in both cold and warm reset case.

Regards,

Neela

  • 0
    TI__Mastermind 27425 points

    Hello Neela,

    Uart is an asynchronous peripheral. There is no way for it know UART line is active unless it continuously keeps trying to receive the data.
    That would also explain how all our demos and SBL is implemented. 
    You can only implement this if you use a GPIO which you can keep for toggling when you want the UART to be in receiving mode.

    Regards,
    Saswat Kumar