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AWR1843AOPEVM: FLASH ERROR - Cannot connect to COM

Griffin Doherty
Prodigy 70 points
Part Number: AWR1843AOPEVM

Tool/software:

4/28/2025, 8:13:30 PM] [INFO] Cortex_R4_0: Connecting to COM Port COM10...
[4/28/2025, 8:13:30 PM] [INFO] Cortex_R4_0: Reset connection to device
[4/28/2025, 8:13:30 PM] [INFO] Cortex_R4_0: Set break signal
[4/28/2025, 8:13:45 PM] [ERROR] Cortex_R4_0: XXXX Received unexpected data!!!XXXX
[4/28/2025, 8:13:45 PM] [ERROR] Cortex_R4_0: Not able to connect to serial port. Recheck COM port selected and/or permissions.
[4/28/2025, 8:13:45 PM] [INFO] Cortex_R4_0: Flashing instance clean-up initiated...
[4/28/2025, 8:13:45 PM] [INFO] Cortex_R4_0: Instance deinitialized!

I have the correct enhanced port at COM10, the switches in the correct location. But I cannot flash. I bought a new board because the old one did the same thing. Please help.

  • 0
    TI__Expert 4060 points

    Hi Griffin,

    Can you please check if some other application is already connected or also trying to connect to the COM port? Are you able to establish a serial connection with some other device on your system?

    Regards,

    Shailesh

  • 0
    Prodigy 70 points

    I power cylced and reset the board, killed everything on the com port in the terminal, tried 2 computers, multiple USB cables, and the correct drivers are installed.

  • 0 in reply to Griffin Doherty
    TI__Expert 4060 points

    Thanks for eliminating these possible causes for this issue.

    Will you be able to take any non-AWR EVM or any other device that has serial communication and try to connect that to your system? Just to confirm that the issue is present only when it is an AWR device. 

    Also, if you are connected to the COM port using any other serial connection application, then it will block the CCS's connection to that COM port, so please ensure that no other application on your computer is trying to connect to the AWR device at the same time.

  • +1 in reply to Shailesh Joshi
    Prodigy 70 points

    Aparantely you need to have the switch on the left turned up for flashing. Thanks