Hi,
I've gotten an STM32F7-Discovery board and tried to use OpenOCD to start
debugging via Eclipse, based on existing board configurations I came up
with two file additions:
openocd/scripts/board/stm32f7discovery.cfg
openocd/scripts/target/stm32f7x.cfg
Files are available here: https://gist.github.com/mojzu/ecaeaa2af325f4f90b08
And running 'openocd -f scripts/board/stm32f7discovery.cfg', appears to
be successful in connecting to the board and reporting the number of
break/watchpoints. However when trying to connect via gdb it fails and
openocd reports:
"""
Info : clock speed 1800 kHz
Info : STLINK v2 JTAG v23 API v2 SWIM v9 VID 0x0483 PID 0x374B
Info : using stlink api v2
Info : Target voltage: 3.214679
Info : stm32f4x.cpu: hardware has 8 breakpoints, 4 watchpoints
Info : accepting 'gdb' connection on tcp/3333
Info : device id = 0x10016449
Warn : Cannot identify target as a STM32 family.
Error: auto_probe failed
Error: Connect failed. Consider setting up a gdb-attach event for the
target to prepare target for GDB connect, or use 'gdb_memory_map disable'.
Error: attempted 'gdb' connection rejected
"""
After looking at the source code in openocd/src/flash/nor/stm32f2x.c it
appeared that two switch statements at lines 771 and 891 need additions,
so I added the cases:
"""
src/flash/nor/stm32f2x.c:771
case 0x449:
max_flash_size_in_kb = 1024;
break;
src/flash/nor/stm32f2x.c:891
case 0x449:
device_str = "STM32F746";
rev_str = "A";
break;
"""
However as I don't currently have a working linux installation I'm
trying to compile this using MinGW under Windows with little success
(the guide I found was only about cross compiling for mingw32 under
linux), I apologise if these questions are a little vague but here goes.
Is there any guide for compiling OpenOCD under windows that I could use
to test these changes, or will it be a lot less hassle just to set up an
ubuntu install? Am I even in the right ballpark for these changes to
work? It's an ST-Link v2.1 SWD debugger onboard which I know works with
the nucleo parts, but are there also likely to be changes elsewhere in
the source for supporting the STM32F7?
Best Regards,
Sam
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