CH32V307 : Debugging with vscode

 This is derived from https://www.justinmklam.com/posts/2017/10/vscode-debugger-setup

1- Install native debugging plugin gdb/... within vscode

2- Add (and change) the following line to your settings.json pointing to the toolchain binaries (especially the riscv gdb) and the wch-openocd bin folder :

"riscv_openocd_path" : "/opt/wch/MounRiver_Studio_Community_Linux_x64_V130/MRS_Community/toolchain/OpenOCD/bin",

"riscv_gdb_path" : "/opt/wch/MRS_Toolchain_Linux_x64_V1.60/RISC-V Embedded GCC/bin/"

3- Create the launch.json file, adapt the name to your project 

{

"version": "0.2.0",

"configurations": [

      {

"name": "riscv_GDB",

"type": "gdb",

"request": "launch",

"cwd": "${workspaceRoot}",

"target": "${workspaceRoot}/build/lnPowerSupply_CH32V3x_72M.elf",

"gdbpath" : "${config:riscv_gdb_path}/riscv-none-embed-gdb",        

"autorun": [        

        "target extended-remote |  ${config:riscv_openocd_path}/openocd -c \"gdb_port pipe; log_output openocd.log\" -f ${config:riscv_openocd_path}/wch-riscv.cfg",

        "set confirm off",

        "set mem inaccessible-by-default off",

        "set  architecture riscv:rv32",

        "set remotetimeout unlimited",

        "set remote hardware-breakpoint-limit 4",

        "mon reset halt",

        "load ",

        "tb main ",

        "b deadEnd "

        ]

     }

   ]

}

NB: This WCH OpenOcd daemon is unstable and needs to be restarted at each launch hence the way it is started here.