You no longer get a run button

[jonathanpallant]

rust-analyser now expands the #[entry], decides that it doesn't result in a fn main() and therefore doesn't offer the run button anymore.

We need to remove references to the run button from the training.

You seem to have two options:

1. Debug in VS Code, where you can single step, but you can't see the defmt log.
2. Run probe-run on the console where you can see the defmt log but you can't single step.

[jonathanpallant]

You can do this:

{
  "version": "0.2.0",
  "configurations": [
    {
      "cwd": "${workspaceRoot}",
      // TODO to debug a different program the app name ("hello") needs to be changed
      "executable": "./target/thumbv7em-none-eabihf/debug/panic",
      "name": "Debug Microcontroller (launch)",
      "request": "launch",
      "preLaunchTask": "rust: cargo build",
      "type": "cortex-debug",
      "runToMain": true,
      "configFiles": [
        "interface/jlink.cfg",
      ],
      "servertype": "openocd",
      "openOCDLaunchCommands": [
        "transport select swd",
        "source [find target/nrf52.cfg]"
      ],
      "rttConfig": {
        "enabled": true,
        "address": "auto",
        "decoders": [
          {
            "port": 0,
            "type": "console",
            "label": "Defmt RTT",
            "logfile": "${workspaceRoot}/rtt.log",
            "noprompt": true
          }
        ]
      }
    }
  ]
}

Once the debugger has started, parse the log file with defmt-print:

$ tail -F rtt.log | defmt-print -e ./target/thumbv7em-none-eabihf/debug/panic
ERROR This is the panic program.
└─ panic::__cortex_m_rt_main @ src/bin/panic.rs:19
ERROR Oh no! PanicInfo { payload: Any { .. }, message: Some(index out of bounds: the len is 3 but the index is 3), location: Location { file: "src/bin/panic.rs", line: 38, col: 13 }, can_unwind: true }
└─ panic::panic @ src/bin/panic.rs:11