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AWRL6844: Inquiry Regarding Firmware Flashing and Wake-up Sequence for Custom PCB

Chun-Ju Wu
Prodigy 80 points
Part Number: AWRL6844

Tool/software:

Hi Ti,

As our project progresses, we have some questions regarding firmware flashing that we would like to consult with you about.

We understand that the architecture of the EVB is as shown in the attached diagram, which includes the XDS110 and FTDI on the 6844 EVB PCB.

 

 

Due to size constraints, we have removed the XDS110 and FTDI from our custom PCB. We would appreciate your guidance on the following questions:

 

  1. Is it possible to use the XDS110 Debug Probe or the MMWAVEICBOOST to upload firmware?
  2. Would you recommend using UART or JTAG for firmware uploading?
  3. Does the RESET pin need to be connected to the XDS110 Debug Probe, or can it be configured as a button?( Similar to 6844)
  4. For firmware uploading, would you recommend using the default visualizer or the arprog_cmdline_6844.exe tool?
  5. The left side of the attached figure shows the measured Wake-up Sequence of our custom PCB, which has slight differences compared to the Reset signal shown on the right side. Will this differences cause any issues?

 

Thank you 

ED

  • +1
    TI__Intellectual 2340 points

    Hi,

    1. Yes, it is possible to upload firmware using both. Ensure that RS232 lines and a common GND is connected.

    2. For development purpose UART is suitable. For production JTAG programming is recommended.

    3. The RESET can be configured as a button. Ensure that PMIC reset is connected to device reset.

    4. There is no speed difference for flashing using both. But visualizer gives a better GUI experience.

    5. The power rails and sop pins seems to be up before RESET is released. Hence should be okay. Please confirm that 3.3V is also up before reset and sop is in flashing mode.

    Regards,

    Sreedeep