lldb-dap + openocd

[ssilnicki-dev]

Hello! what is the easiest way to start/stop/tune openocd as debug server and then configure lldb session to work with JTAG connected target? With lldb-vscode's approach with its initCommands, attachCommands,terminateCommands it was not that cumbersome, but I struggle with dape to achieve similar convenience.

[svaante]

Hey!
This is some kind of starting point for how a openocd + lldb-dap could look like (have not test it).

(add-to-list
 'dape-configs
 `(lldb-dap-openocd
   ,@(alist-get 'lldb-dap dape-configs)
   fn (lambda (config)
        (let* ((default-directory (dape--guess-root config))
               (openocd
                ;; Run openocd with config files from `openocd-files' property
                (start-process-shell-command
                 "openocd" "*openocd*"
                 (concat "openocd"
                         (mapconcat (lambda (file)
                                      (concat " -f " (shell-quote-argument file)))
                                    (append (dape-config-get config 'openocd-files) nil)))))
               probe)
          ;; Wait until port is open
          (while (and (process-live-p openocd)
                      (not (setq probe (ignore-errors
                                         (make-network-process :name "openocd port probe"
                                                               :service 3333)))))
            (sleep-for 0.1))
          ;; Close probe connection
          (when probe
            (delete-process probe)))
        config)
   openocd-files ["platform/stm32f4.cfg"]
   :initCommands ["platform select remote-gdb-server"
                  "target connect connect://localhost:3333"
                  "monitor reset halt"]
   :exitCommands ["monitor shutdown"]
   :terminateCommands ["monitor shutdown"]))

Also there is the integration with cortext-debug adapter https://github.com/svaante/dape-cortex-debug

[ssilnicki-dev]

Thank you very much!