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AWR1843: About SBL and Demo files

Hiroyuki Kanematu
Expert 2975 points
Part Number: AWR1843
Other Parts Discussed in Thread: UNIFLASH,

Hi, I want to hear about how to flash SBL.

I wrote the SBL and Demo files to AWR1843 in UniFlash as shown in the document.
Is it okay to assume that BootLoader has started and the AWR1843 application has been downloaded?

Attachment 4.10 uses Tera Term, is this not necessary when using UniFlash?

Thank you for your reply.7824.SBL_design.pdf

  • 0
    TI__Genius 15046 points

    Hi Hiroyuki,

    The reference SBL application is designed to showcase the loading and updating of an image over UART. If no metaimage is sent via Teraterm (XMODEM protocol) over UART, this times out and loads image A, which is presumably already flashed using Uniflash. If image A is corrupted, then image B is loaded as backup.

    Hiroyuki Kanematu said:
    Is it okay to assume that BootLoader has started and the AWR1843 application has been downloaded?

    It is okay to assume that the bootloader has started. However, in the reference application, the wait for UART timeout is significant, so the user image in flash will not load immediately, but rather after the timeout expires. If you want the SBL to load the pre-flashed image instantly, you can modify the SBL code by commenting out the while loop that waits for user input on whether to update the metaimage from UART or not.

    You can connect to the device UART with Teraterm and follow the SBL steps once to gain more familiarity with how the reference SBL application works. 

    Regards,

    Aayush