Launch JSON for VSCode w/ OpenOCD and GDB debugging.

launch.json

{
  // Use IntelliSense to learn about possible attributes.
  // Hover to view descriptions of existing attributes.
  // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
  "version": "0.2.0",
  "configurations": [

    {
      "name": "Debug",
      "type": "cppdbg",
      "request": "launch",
      "targetArchitecture": "arm",
      "cwd": "${workspaceRoot}",
      "program": "${workspaceRoot}/target/thumbv7m-none-eabi/debug/app",
      "stopAtEntry": false,
      "windows": {
        "MIMode": "gdb",
        "miDebuggerPath": "arm-none-eabi-gdb.exe",
        "customLaunchSetupCommands": [
          {
            "text": "cd ${workspaceRoot}"
          },
          {
            "text": "target remote localhost:3333",
            "description": "connect to remote target",
            "ignoreFailures": false
          },
          {
            "text": "monitor reset halt",
            "description": "halt",
            "ignoreFailures": false
          },
          {
            "text": "file target/thumbv7m-none-eabi/debug/app",
            "description": "load symbols",
            "ignoreFailures": false
          },
          {
            "text": "load",
            "description": "load to remote MCU",
            "ignoreFailures": false
          }
        ]
      },
    }
  ]
}