How to connect STM32H745I-DISCO with openOCD using openOCD ?

VLacr.1 · ‎2022-01-14

Hello,

I am not able to connect my ubuntu 20.04 laptop to a STM32H745I-DISCO board using openocd.

```

$ openocd -f board/stm32h745i-disco.cfg

Open On-Chip Debugger 0.11.0+dev-00450-ge67ff42de (2022-01-14-09:58)

Licensed under GNU GPL v2

For bug reports, read

http://openocd.org/doc/doxygen/bugs.html

Error: The specified debug interface was not found (hla)

The following debug adapters are available:

1: jlink

2: buspirate

```

I tried with the following revisions of openocd:

revision 0.11 from official repository
master version from ST Fork

I see the interface on my computer:

```

$ lsusb | grep -i stm

Bus 001 Device 016: ID 0483:374e STMicroelectronics STLINK-V3

```

Did I missed something ?

Andreas Bolsch · ‎2022-01-14

Looks like you've build both variants by yourself? Then most probably the hla interface wasn't built in (maybe some dependency was missing so that 'configure' script did exclude it automatically --- check configure's output).

vlacr.11 · ‎2022-01-17

Thanks for your answer Andreas. I tried to compile with:

```

./configure --enable-stlink

```

The ST Fork of openOCD doesn't compile:

```

./src/helper/types.h:194:9: error: ‘misc_items’ may be used uninitialized in this function [-Werror=maybe-uninitialized]

194 | buf[0] = (uint8_t) (val >> 0);

| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~

src/jtag/drivers/stlink_usb.c:4595:20: note: ‘misc_items’ was declared here

4595 | unsigned int cnt, misc_items;

| ^~~~~~~~~~

```

However, the official openOCD compiles with this option.

Going back to the board with this new openocd, it seems that I have at least an access right issue:

```

$ openocd -f board/stm32h745i-disco.cfg

Open On-Chip Debugger 0.11.0-dirty (2022-01-17-09:32)

Licensed under GNU GPL v2

For bug reports, read

http://openocd.org/doc/doxygen/bugs.html

Info : The selected transport took over low-level target control. The results might differ compared to plain JTAG/SWD

Info : Listening on port 6666 for tcl connections

Info : Listening on port 4444 for telnet connections

Info : clock speed 1800 kHz

Error: libusb_open() failed with LIBUSB_ERROR_ACCESS

Error: open failed

```

When I try to bypass this issue, I run into another one:

```

$ sudo openocd -f board/stm32h745i-disco.cfg

Open On-Chip Debugger 0.11.0-dirty (2022-01-17-09:32)

Licensed under GNU GPL v2

For bug reports, read

http://openocd.org/doc/doxygen/bugs.html

Info : The selected transport took over low-level target control. The results might differ compared to plain JTAG/SWD

Info : Listening on port 6666 for tcl connections

Info : Listening on port 4444 for telnet connections

Info : clock speed 1800 kHz

Info : STLINK V3J3M2 (API v3) VID:PID 0483:374E

Info : Target voltage: 3.279681

Error: init mode failed (unable to connect to the target)

```

Any clue ?

GTelk · ‎2022-10-19

There is an unititialized variable in stlink_usb.c, see https://github.com/STMicroelectronics/OpenOCD/pull/13