* ob-arduino.el (supporting Arduino in Org-mode Babel): Add.

First version.

contrib/lisp/ob-arduino.el

@@ -0,0 +1,105 @@
+;;; ob-arduino.el --- Org-mode Babel support for Arduino.
+;;
+;; Authors: stardiviner <numbchild@gmail.com>
+;; Package-Requires: ((emacs "24.4") (org "24.1"))
+;; Package-Version: 1.0
+;; Keywords: arduino org babel
+;; homepage: https://github.com/stardiviner/arduino-mode
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;;
+;;; Commentary:
+;; 
+;; Like the following src block, press =[C-c C-c]= to upload to Arduino board.
+;; 
+;; #+begin_src arduino
+;; // the setup function runs once when you press reset or power the board
+;; void setup() {
+;;   // initialize digital pin LED_BUILTIN as an output.
+;;   pinMode(LED_BUILTIN, OUTPUT);
+;; }
+;; 
+;; // the loop function runs over and over again forever
+;; void loop() {
+;;   digitalWrite(LED_BUILTIN, HIGH);   // turn the LED on (HIGH is the voltage level)
+;;   delay(100);                       // wait for 0.1 second
+;;   digitalWrite(LED_BUILTIN, LOW);    // turn the LED off by making the voltage LOW
+;;   delay(100);                       // wait for 0.1 second
+;; }
+;; #+end_src
+;;
+;;; Code:
+
+(require 'org)
+(require 'ob)
+(require 'arduino-mode)
+
+(defgroup ob-arduino nil
+  "org-mode blocks for Arduino."
+  :group 'org)
+
+(defcustom ob-arduino:program "arduino"
+  "Default Arduino program name."
+  :group 'ob-arduino
+  :type 'string)
+
+(defcustom ob-arduino:port "/dev/ttyACM0"
+  "Default Arduino port."
+  :group 'ob-arduino
+  :type 'string)
+
+(defcustom ob-arduino:board "arduino:avr:uno"
+  "Default Arduino board."
+  :group 'ob-arduino
+  :type 'string)
+
+
+(defvar org-babel-default-header-args:sclang nil)
+
+;;;###autoload
+(defun org-babel-execute:arduino (body params)
+  "org-babel arduino hook."
+  (let* ((port (cdr (assoc :port params)))
+         (board (cdr (assoc :board params)))
+         (cmd (mapconcat 'identity (list
+                                    ob-arduino:program "--upload"
+                                    (if port (concat "--port " port))
+                                    (if board (concat "--board " board))
+                                    ) " "))
+         (code (org-babel-expand-body:generic body params))
+         (src-file (org-babel-temp-file "ob-arduino-" ".ino")))
+    ;; delete all `ob-arduino' temp files, otherwise arduino will compile all
+    ;; ob-arduino temp files, and report error.
+    (mapc
+     (lambda (f)
+       (unless (file-directory-p f)
+         (delete-file (expand-file-name f org-babel-temporary-directory))))
+     (directory-files
+      (file-name-directory (org-babel-temp-file "ob-arduino-" ".ino"))
+      nil ".ino"))
+    ;; specify file for arduino command.
+    (with-temp-file src-file
+      (insert code))
+    (org-babel-eval
+     (concat ob-arduino:program
+             " " "--upload"
+             " " (if port (concat "--port " port))
+             " " (if board (concat "--board " board))
+             " " src-file)
+     "" ; pass empty string "" as `BODY' to `org-babel--shell-command-on-region'
+     ;; to fix command `arduino' don't accept string issue.
+     )
+    ))
+
+
+;;;###autoload
+(eval-after-load 'org
+  '(add-to-list 'org-src-lang-modes '("arduino" . arduino)))
+
+
+
+
+(provide 'ob-arduino)
+
+;;; ob-arduino.el ends here