After compiling OpenOCD from source (commit: 6edf98db7), OpenOCD could not connect with the target board which is a GD32VF103T_START development board,
when I used the command: openocd -f "interface/cmsis-dap.cfg" -f "target/gd32vf103.cfg"
Issue 1: The clock speed hasn't been set, the error message given is:
Error: CMSIS-DAP command CMD_DAP_SWJ_CLOCK failed.
Which can be solved by adding a clock speed setting to the gd32vf103.cfg file:
adapter speed 1000
Issue 2: The default transport is not set to jtag, which it requires, the error shown is:
Open On-Chip Debugger 0.11.0+dev-01861-g6edf98db7-dirty (2021-08-25-10:18)
Licensed under GNU GPL v2
For bug reports, read
http://openocd.org/doc/doxygen/bugs.html
Info : auto-selecting first available session transport "swd". To override use 'transport select <transport>'.
embedded:startup.tcl:128: Error: session transport is "swd" but your config requires JTAG
in procedure 'script'
at file "embedded:startup.tcl", line 26
in procedure 'jtag' called at file "/home/user/riscv-openocd-tool/usr/local/bin/../share/openocd/scripts/target/gd32vf103.cfg", line 9
in procedure 'default_to_jtag' called at file "embedded:startup.tcl", line 133
at file "embedded:startup.tcl", line 128
This issue can be solved by adding the line:
transport select jtag
After adding these two lines, OpenOCD could connect to the development board successfully. Programming the flash also works.
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