Multiple board debugging configuration

[anhdung88]

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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[Ale77]

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/

[anhdung88]

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, 9 months ago by anhdung88.
• This reply was modified 7 years, 9 months ago by anhdung88.

[Ale77]

@anhdung88 I’m happy you have resolved! 🙂

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