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jarvis.el
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jarvis.el
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;;; jarvis.el --- An automotive assistant
;; Copyright © 2013 Phil Hagelberg
;;
;; Author: Phil Hagelberg <[email protected]>
;; URL: https://github.com/technomancy/jarvis
;; Version: 0.0.1
;; Keywords: automobile
;; This file is not part of GNU Emacs.
;;; Commentary:
;; A UI for initiating a few commands for a computer onboard a car.
;; * Binary clock
;; * Music
;; * Navigation
;;; License:
;; This program is free software; you can redistribute it and/or
;; modify it under the terms of the GNU General Public License
;; as published by the Free Software Foundation; either version 3
;; of the License, or (at your option) any later version.
;;
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;;
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs; see the file COPYING. If not, write to the
;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
;; Boston, MA 02110-1301, USA.
;;; Code:
(require 'cl)
(require 'dbus)
(load-file "/usr/share/emacs/site-lisp/festival.el")
(defvar jarvis-root (expand-file-name (concat (or load-file-name
(buffer-file-name)) "/..")))
(defun jarvis-init ()
(interactive)
(jarvis-init-clock)
(festival-say-string "Welcome aboard, sir."))
;;; Clock
(defvar jarvis-hour-pins '(2 3 4 14 15))
;; 3 5 7 8 10 on actual headers
(defvar jarvis-minute-pins '(7 8 11 25 9 10))
;; 26 24 23 22 21 19
(defun jarvis-gpio (pin state)
(when (file-exists-p "/sys/class/gpio")
(shell-command (format "echo %s > /sys/class/gpio/gpio%s/value"
(if state 1 0) pin))))
(defun jarvis-bits (n)
(cond ((= 1 n) '(t))
((= 0 n) '(nil))
(t (cons (car (jarvis-bits (mod n 2)))
(jarvis-bits (lsh n -1))))))
(defun jarvis-clock ()
(interactive)
(let* ((hour (caddr (decode-time (current-time))))
(minute (cadr (decode-time (current-time))))
(hour-bits (jarvis-bits hour))
(minute-bits (jarvis-bits minute)))
(dotimes (n 5)
(jarvis-gpio (nth n jarvis-hour-pins) (nth n hour-bits)))
(dotimes (n 6)
(jarvis-gpio (nth n jarvis-minute-pins) (nth n minute-bits)))))
(defun jarvis-init-clock ()
(dolist (p (append jarvis-hour-pins jarvis-minute-pins))
(shell-command (format "sudo bash -c \"echo %s > /sys/class/gpio/export\"" p))
(shell-command (format "sudo chmod 777 /sys/class/gpio/gpio%s/*" p))
(shell-command (concat "sudo bash -c \"echo out > /sys/class/gpio/gpio"
(number-to-string p) "/direction\"")))
(run-with-timer 0 60 'jarvis-clock))
;;; Music
(defvar jarvis-music-root (expand-file-name "~/music/"))
(defvar jarvis-music-dirs
(let* ((cmd (format "find %s -type d" jarvis-music-root))
(dirs (butlast (split-string (shell-command-to-string cmd) "\n"))))
(mapcar (lambda (d) (substring d (length jarvis-music-root)))
(cdr dirs))))
(defun jarvis-toggle () (interactive) (shell-command "mpc toggle"))
(defun jarvis-next () (interactive) (shell-command "mpc next"))
(defun jarvis-prev () (interactive) (shell-command "mpc prev"))
(defun jarvis-play (choice)
(shell-command "mpc clear")
(shell-command (format "mpc add %s" choice))
(shell-command "mpc play"))
(defun jarvis-choose ()
(interactive)
(jarvis-play (ido-completing-read "Play: " jarvis-music-dirs)))
(defun jarvis-random ()
(interactive)
(jarvis-play (nth (random (length jarvis-music-dirs)) jarvis-music-dirs)))
;;; Navigation
(defun jarvis-init-nav ()
(unless (dbus-ping :session "org.navit_project.navit")
(shell-command (format "cd %s; navit -c navit.xml &" jarvis-root))
(dbus-init-bus :session)))
(defun jarvis-nav-method (method &rest args)
(jarvis-init-nav)
(apply 'dbus-call-method :session "org.navit_project.navit"
"/org/navit_project/navit/default_navit"
"org.navit_project.navit.navit"
(symbol-name method) args))
(defun jarvis-nav ()
(interactive)
(jarvis-init-nav)
(jarvis-nav-method 'set_destination
(read-from-minibuffer "Destination: ")
"destination"))
(defun jarvis-nav-clear ()
(interactive)
(jarvis-nav-method 'clear_destination))
(provide 'jarvis) ;;; jarvis.el ends here