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  • March 9, 2017 at 6:49 pm #6490
    anhdung88
    Participant

    Dear Mr Noviello,
    I am trying to debug 2 ST32F072 disco boards as your guide at chapter 21.6.
    While debugging 1 board is okay, but when I try to add argument “-c hla_serial <serial>” it fails. The log says that:

    Open On-Chip Debugger 0.10.0-dev-00274-g2ee83e0 (2017-01-12-17:09)
    Licensed under GNU GPL v2
    For bug reports, read
    http://openocd.org/doc/doxygen/bugs.html
    Info : auto-selecting first available session transport “hla_swd”. To override use ‘transport select <transport>’.
    Info : The selected transport took over low-level target control. The results might differ compared to plain JTAG/SWD
    adapter speed: 1000 kHz
    adapter_nsrst_delay: 100
    srst_only separate srst_nogate srst_open_drain connect_assert_srst
    srst_only separate srst_nogate srst_open_drain connect_assert_srst
    Info : Unable to match requested speed 1000 kHz, using 950 kHz
    Info : Unable to match requested speed 1000 kHz, using 950 kHz
    Info : clock speed 950 kHz
    Error: open failed
    in procedure ‘init’
    in procedure ‘ocd_bouncer’

    PS: I am using eclipse SW4STM32 and trying to use the pre-installed openocd plugin of this.
    Could please give me some hints to overcome this problem, many thanks.

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    March 9, 2017 at 9:24 pm #6495
    Ale77
    Participant

    I had the same problem some days ago. The error is due to the fact that the OpenOCD doesn’t accept the hla_serial in ASCII characters. The serial number must be specified in hexadecimal format. I summarized how I resolved the issue in the following post:

    http://www.carminenoviello.com/mastering-stm32/forums/t/issue-while-debugging-two-nucleo-boards-simultaneously/

    March 10, 2017 at 1:55 pm #6541
    anhdung88
    Participant

    Many thanks @Ale77, your post helps me a lot.
    PS: A workaround for this case, I found that I can use multiple STLink dongle by using virtual machines without any special configuration :))

    • This reply was modified 7 years, 8 months ago by anhdung88.
    • This reply was modified 7 years, 8 months ago by anhdung88.
    March 10, 2017 at 2:32 pm #6549
    Ale77
    Participant

    @anhdung88 I’m happy you have resolved! 🙂

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