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LP-AM243: Cannot detect COM Port to onboard XDS-110

Andrea Favero
Prodigy 170 points

Part Number: LP-AM243
Other Parts Discussed in Thread: AM2434

Hi,

I am trying to connect my pc to the debugger on board of the LP-AM243.

The connection worked only the first time: the new device was successfully recognised and configured by Windows and I managed to open the port using the benchmark demo from AM243x LaunchPad's OOB.

After that I disconnected the board and turned off my pc. I tried to reconnect the day after but failed to do so.

Here's what the device manager showed me:

it recognised "Stellaris Device Firmware Upgrade" but no COM Port was detected.

On the board end I tried powering the whole board but it didn't help; I also checked power supply and saw the 3.3V on TP35.

On the computer end I tried reinstalling the drive and tried to use a different pc, but the problem persisted.

Is there a way to fix this?

  • 0
    TI__Expert 7665 points

    Hello Andrea,

    Are you able to to connect via micro USB while the board is unpowered (no type-C connection) and confirm that the XDS110 does not appear in the COM Ports of your device manager. Below is an example of what should be observed with only a micro-USB connection from the PC to the Launchpad. If you are able to observe the XDS110 COM ports then attempt the following sequence:

    1) disconnect Micro-USB connection

    2) connect Type-C connection first

    3) connect Micro-USB connection second

    4) Go to device manager and check if COM ports are observed.

    Regards,

    Erik

  • 0
    Prodigy 170 points

    Thanks, I'll try it next week and let you know if it works

  • +1
    Guru 92251 points
    Andrea Favero said:
    it recognised "Stellaris Device Firmware Upgrade" but no COM Port was detected.

    The Flashing the bootloader section of the XDS110 Debug Probe product page says:

    In case the pod can't be acknowledged by the host or only shows the Stellaris DFU entry on the Control Panel (as shown in the picture below), it means the custom bootloader may be damaged.

    The referenced section contains some instruction on how to flash the custom bootloader to the XDS110, which should hopefully fix the problem.

  • 0 in reply to Chester Gillon
    Prodigy 170 points
    Chester Gillon said:

    The Flashing the bootloader section of the XDS110 Debug Probe product page says:

    In case the pod can't be acknowledged by the host or only shows the Stellaris DFU entry on the Control Panel (as shown in the picture below), it means the custom bootloader may be damaged.

    The referenced section contains some instruction on how to flash the custom bootloader to the XDS110, which should hopefully fix the problem.

    Thank you very much, I followed the steps in the manual and fixed my debugger.

    I also tried loading a programm in the AM2434 MCU and the debugger works fine now Slight smile