forked from schoenfelde/doc-hack
/
grove.js
executable file
·85 lines (70 loc) · 2.6 KB
/
grove.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
/*
* Copyright (c) 2015 - 2016 Intel Corporation.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
"use strict";
var exports = module.exports = {};
var mraa = require('mraa');
// devices
var touch, buzzer, screen;
// pins
var touchPin = 4,
buzzerPin = 5,
i2cBus = 6;
// Initialize the Grove hardware devices
exports.init = function(config) {
if (config.platform == "firmata") {
// open connection to firmata
mraa.addSubplatform(mraa.GENERIC_FIRMATA, "/dev/ttyACM0");
touchPin += 512;
buzzerPin += 512;
i2cBus = 512;
}
touch = new (require("jsupm_ttp223").TTP223)(touchPin);
buzzer = new (require("jsupm_buzzer").Buzzer)(buzzerPin);
screen = new (require("jsupm_i2clcd").Jhd1313m1)(i2cBus, 0x3E, 0x62);
}
// Colors used for the RGB LED
var colors = { green: [0, 255, 0], white: [255, 255, 255] };
// Writes a message to the I2C LCD display
exports.message = function(string, color) {
// pad string to avoid display issues
while (string.length < 16) { string += " "; }
screen.setCursor(0, 0);
screen.write(string);
screen.setColor.apply(screen, colors[color] || colors.white);
}
// Reset the state of the doorbot
exports.reset = function() {
this.message("doorbot ready");
buzzer.setVolume(0.5);
// we call #stopSound twice because otherwise buzzer may not actually stop
buzzer.stopSound();
buzzer.stopSound();
}
// play a sound
exports.playSound = function(hz, len) {
buzzer.playSound(hz, len);
}
// is the touch sensor pressed?
exports.touchPressed = function() {
return touch.isPressed();
}