Company-arduino.el

This package is a set of configuration to let you auto-completion by using irony-mode, company-irony and company-c-headers on arduino-mode.

Prerequisite

This package need irony-mode, company-irony and company-c-headers packages. Please install those packages first. But if you are using MELPA, package.el will install dependencies automatically when you install this package. Also, you need irony-mode's setting, so please follow the irony-mode's instruction (https://github.com/Sarcasm/irony-mode).

Although you may prepared Arduino environment, you need it as well to refer to Arduino's header files. You can download from Arduino's web site (http://www.arduino.cc/en/Main/Software)

Installation

This package can install from via MELPA. So if you already set up MELPA, you can install it by using:

M-x package-install RET company-arduino RET

Usage

Set $ARDUINO_HOME environment variable as Arduino IDE's installed directory.

export ARDUINO_HOME=$HOME/share/devkit/arduino-1.6.3

Then put following configurations to your .emacs or somewhere.

;; If you installed this package from without MELPA, you may need
;; `(require 'company-arduino)'.
  
;; Configuration for irony.el
;; Add arduino's include options to irony-mode's variable.
(add-hook 'irony-mode-hook 'company-arduino-turn-on)
  
;; Configuration for company-c-headers.el
;; The `company-arduino-append-include-dirs' function appends
;; Arduino's include directories to the default directories
;; if `default-directory' is inside `company-arduino-home'. Otherwise
;; just returns the default directories.
;; Please change the default include directories accordingly.
(defun my-company-c-headers-get-system-path ()
  "Return the system include path for the current buffer."
  (let ((default '("/usr/include/" "/usr/local/include/")))
    (company-arduino-append-include-dirs default t)))
(setq company-c-headers-path-system 'my-company-c-headers-get-system-path)
  
;; Activate irony-mode on arduino-mode
(add-hook 'arduino-mode-hook 'irony-mode)

If you are already using company-irony and company-c-headers, you might have same setting. That case, you can omit below setting.

(add-to-list 'company-backends 'company-irony)
(add-to-list 'company-backends 'company-c-headers)

Note

This package's default configuration is set for Linux environment, which I'm currently using, so if you are using different environment (Mac or Windows), please change the Arduino's directory paths accordingly. Related variables: company-arduino-sketch-directory-regex, company-arduino-home, company-arduino-header, company-arduino-includes-dirs and irony-arduino-includes-options.

Pull-Requests are welcome