1 | var Board = require("./board");
|
2 | var Expander = require("./expander");
|
3 | var Emitter = require("events").EventEmitter;
|
4 | var util = require("util");
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5 | var Fn = require("./fn");
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6 |
|
7 | var constrain = Fn.constrain;
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8 | var fma = Fn.fma;
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9 | var int16 = Fn.int16;
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10 | var sum = Fn.sum;
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11 | var toFixed = Fn.toFixed;
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12 |
|
13 | var priv = new Map();
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14 | var calibrationSize = 10;
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15 |
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16 | var aX = "x";
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17 | var aY = "y";
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18 | var aZ = "z";
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19 | var axes = [aX, aY, aZ];
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20 |
|
21 | function analogInitialize(opts, dataHandler) {
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22 | var state = priv.get(this);
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23 | var dataPoints = {};
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24 |
|
25 | state.zeroV = opts.zeroV || this.DEFAULTS.zeroV;
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26 | state.sensitivity = opts.sensitivity || this.DEFAULTS.sensitivity;
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27 |
|
28 | this.pins.forEach(function(pin, index) {
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29 | this.io.pinMode(pin, this.io.MODES.ANALOG);
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30 | this.io.analogRead(pin, function(data) {
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31 | var axis = axes[index];
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32 | dataPoints[axis] = data;
|
33 | dataHandler(dataPoints);
|
34 | }.bind(this));
|
35 | }, this);
|
36 | }
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37 |
|
38 | function analogToGravity(raw, axis) {
|
39 | var state = priv.get(this);
|
40 | var zeroV = state.zeroV;
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41 |
|
42 | if (Array.isArray(zeroV) && zeroV.length > 0) {
|
43 | var axisIndex = axes.indexOf(axis);
|
44 | zeroV = zeroV[axisIndex || 0];
|
45 | }
|
46 |
|
47 | return (raw - zeroV) / state.sensitivity;
|
48 | }
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49 |
|
50 | var Controllers = {
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51 | ANALOG: {
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52 | DEFAULTS: {
|
53 | value: {
|
54 | zeroV: 478,
|
55 | sensitivity: 96
|
56 | }
|
57 | },
|
58 | initialize: {
|
59 | value: analogInitialize
|
60 | },
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61 | toGravity: {
|
62 | value: analogToGravity
|
63 | }
|
64 | },
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65 | MPU6050: {
|
66 | initialize: {
|
67 | value: function(opts, dataHandler) {
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68 | var IMU = require("./imu");
|
69 | var driver = IMU.Drivers.get(this.board, "MPU6050", opts);
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70 | var state = priv.get(this);
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71 |
|
72 | state.sensitivity = opts.sensitivity || 16384;
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73 |
|
74 | driver.on("data", function(data) {
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75 | dataHandler(data.accelerometer);
|
76 | });
|
77 | }
|
78 | },
|
79 | toGravity: {
|
80 | value: function(raw) {
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81 |
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82 |
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83 |
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84 |
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85 |
|
86 | var state = priv.get(this);
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87 |
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88 |
|
89 | return toFixed(raw / state.sensitivity, 3);
|
90 | }
|
91 | }
|
92 | },
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93 | BNO055: {
|
94 | initialize: {
|
95 | value: function(opts, dataHandler) {
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96 | var IMU = require("./imu");
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97 | var driver = IMU.Drivers.get(this.board, "BNO055", opts);
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98 | var state = priv.get(this);
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99 |
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100 |
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101 | state.sensitivity = 100;
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102 |
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103 | driver.on("data", function(data) {
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104 | dataHandler(data.accelerometer);
|
105 | });
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106 | }
|
107 | },
|
108 | toGravity: {
|
109 | value: function(raw) {
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110 |
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111 |
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112 |
|
113 | var state = priv.get(this);
|
114 | return toFixed(raw / state.sensitivity, 2);
|
115 | }
|
116 | }
|
117 | },
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118 |
|
119 | ADXL335: {
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120 | DEFAULTS: {
|
121 | value: {
|
122 | zeroV: 330,
|
123 | sensitivity: 66.5
|
124 | }
|
125 | },
|
126 | initialize: {
|
127 | value: analogInitialize
|
128 | },
|
129 | toGravity: {
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130 |
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131 |
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132 |
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133 |
|
134 | value: function(value, axis) {
|
135 | var read = analogToGravity.call(this, value, axis);
|
136 | return toFixed(read, 3);
|
137 | }
|
138 | }
|
139 | },
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140 |
|
141 | ADXL345: {
|
142 | ADDRESSES: {
|
143 | value: [0x53]
|
144 | },
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145 | REGISTER: {
|
146 | value: {
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147 |
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148 |
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149 |
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150 | POWER: 0x2D,
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151 |
|
152 | DATA_FORMAT: 0x31,
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153 |
|
154 | DATAX0: 0x32
|
155 | }
|
156 | },
|
157 | initialize: {
|
158 | value: function(opts, dataHandler) {
|
159 | var READLENGTH = 6;
|
160 | var address = opts.address || this.ADDRESSES[0];
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161 |
|
162 | opts.address = address;
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163 |
|
164 | this.io.i2cConfig(opts);
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165 |
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166 |
|
167 | this.io.i2cWrite(address, this.REGISTER.POWER, 0);
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168 |
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169 |
|
170 | this.io.i2cWrite(address, this.REGISTER.POWER, 8);
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171 |
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172 | |
173 |
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174 |
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175 |
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176 |
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177 |
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178 |
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179 |
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180 |
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181 |
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182 |
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183 |
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184 |
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185 |
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186 |
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187 |
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188 |
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189 |
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190 |
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191 |
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192 |
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193 |
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194 |
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195 |
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196 |
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197 |
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198 |
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199 |
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200 |
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201 |
|
202 | var format = 0x08;
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203 |
|
204 | |
205 |
|
206 |
|
207 |
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208 |
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209 |
|
210 |
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211 |
|
212 | var range = ({
|
213 | 2: 0,
|
214 | 4: 1,
|
215 | 8: 2,
|
216 | 16: 3
|
217 | })[opts.range || 2];
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218 |
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219 |
|
220 | this.io.i2cWrite(address, this.REGISTER.DATA_FORMAT, format | range);
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221 |
|
222 | this.io.i2cRead(address, this.REGISTER.DATAX0, READLENGTH, function(data) {
|
223 | dataHandler({
|
224 | x: int16(data[1], data[0]),
|
225 | y: int16(data[3], data[2]),
|
226 | z: int16(data[5], data[4])
|
227 | });
|
228 | });
|
229 | },
|
230 | },
|
231 | toGravity: {
|
232 | value: function(raw) {
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233 |
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234 |
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235 |
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236 |
|
237 | return toFixed(raw * 0.00390625, 8);
|
238 | }
|
239 | }
|
240 | },
|
241 | MMA7361: {
|
242 | DEFAULTS: {
|
243 | value: {
|
244 | zeroV: [372, 372, 287],
|
245 | sensitivity: 170
|
246 | }
|
247 | },
|
248 | initialize: {
|
249 | value: function(opts, dataHandler) {
|
250 | var state = priv.get(this);
|
251 |
|
252 |
|
253 | if (opts.sleepPin !== undefined) {
|
254 | state.sleepPin = opts.sleepPin;
|
255 | this.io.pinMode(state.sleepPin, 1);
|
256 | this.io.digitalWrite(state.sleepPin, 1);
|
257 | }
|
258 |
|
259 | analogInitialize.call(this, opts, dataHandler);
|
260 | }
|
261 | },
|
262 | toGravity: {
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263 |
|
264 |
|
265 |
|
266 |
|
267 |
|
268 | value: function(value, axis) {
|
269 | var read = analogToGravity.call(this, value, axis);
|
270 | return toFixed(read, 3);
|
271 | }
|
272 | },
|
273 | enabledChanged: {
|
274 | value: function(value) {
|
275 | var state = priv.get(this);
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276 |
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277 |
|
278 | if (state.sleepPin !== undefined) {
|
279 | this.io.digitalWrite(state.sleepPin, value ? 1 : 0);
|
280 | }
|
281 | }
|
282 | }
|
283 | },
|
284 | MMA8452: {
|
285 | ADDRESSES: {
|
286 | value: [0x1D]
|
287 | },
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288 | REGISTER: {
|
289 | value: {
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290 |
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291 |
|
292 | STATUS: 0x00,
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293 | OUT_X_MSB: 0x01,
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294 | XYZ_DATA_CFG: 0x0E,
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295 | PULSE_CFG: 0x21,
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296 | PULSE_SRC: 0x22,
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297 | PULSE_THSX: 0x23,
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298 | PULSE_THSY: 0x24,
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299 | PULSE_THSZ: 0x25,
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300 | PULSE_TMLT: 0x26,
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301 | PULSE_LTCY: 0x27,
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302 | PULSE_WIND: 0x28,
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303 | CTRL_REG1: 0x2A,
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304 | CTRL_REG4: 0x2E,
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305 | CTRL_REG5: 0x2F,
|
306 | }
|
307 | },
|
308 | initialize: {
|
309 | value: function(opts, dataHandler) {
|
310 | var state = priv.get(this);
|
311 | var address = opts.address || this.ADDRESSES[0];
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312 |
|
313 | opts.address = address;
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314 |
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315 |
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316 |
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317 |
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318 |
|
319 |
|
320 |
|
321 |
|
322 |
|
323 |
|
324 | var rates = [800, 400, 200, 100, 50, 12, 6, ];
|
325 | var odr = rates.indexOf(opts.odr || 800);
|
326 | var scale = opts.range || 2;
|
327 | var fsr = ({
|
328 | 2: 0,
|
329 | 4: 1,
|
330 | 8: 2
|
331 | })[scale];
|
332 |
|
333 | opts.taps = opts.taps || {
|
334 | x: false,
|
335 | y: false,
|
336 | z: true,
|
337 | };
|
338 |
|
339 | var taps = {
|
340 | x: opts.taps.x ? 0x08 : 0x80,
|
341 | y: opts.taps.y ? 0x08 : 0x80,
|
342 | z: opts.taps.z ? 0x08 : 0x80,
|
343 | };
|
344 |
|
345 | state.scale = scale;
|
346 |
|
347 | var computed = {
|
348 | x: null,
|
349 | y: null,
|
350 | z: null,
|
351 | };
|
352 |
|
353 | this.io.i2cConfig(
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354 | Object.assign(opts, {
|
355 | settings: {
|
356 | stopTX: false
|
357 | }
|
358 | })
|
359 | );
|
360 |
|
361 | if (odr === -1) {
|
362 | throw new RangeError("Invalid odr. Expected one of: 800, 400, 200, 100, 50, 12, 6");
|
363 | }
|
364 |
|
365 | |
366 |
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367 |
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368 |
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369 |
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370 |
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371 |
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372 |
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373 |
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374 |
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375 |
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376 |
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377 |
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378 |
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379 |
|
380 | var config = 0x08;
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381 |
|
382 | |
383 |
|
384 |
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385 |
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386 |
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387 |
|
388 |
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389 |
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390 |
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391 |
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392 |
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393 |
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394 |
|
395 |
|
396 | config |= odr << 3;
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397 |
|
398 | |
399 |
|
400 |
|
401 |
|
402 |
|
403 |
|
404 |
|
405 |
|
406 |
|
407 |
|
408 |
|
409 |
|
410 |
|
411 | this.io.i2cWriteReg(address, this.REGISTER.CTRL_REG1, config);
|
412 |
|
413 | |
414 |
|
415 |
|
416 |
|
417 |
|
418 |
|
419 |
|
420 |
|
421 | this.io.i2cWriteReg(address, this.REGISTER.XYZ_DATA_CFG, fsr);
|
422 |
|
423 | var temp = 0;
|
424 |
|
425 | |
426 |
|
427 |
|
428 |
|
429 |
|
430 |
|
431 |
|
432 |
|
433 |
|
434 | if (!(taps.x & 0x80)) {
|
435 |
|
436 | temp |= 0x03;
|
437 | this.io.i2cWriteReg(address, this.REGISTER.PULSE_THSX, taps.x);
|
438 | }
|
439 |
|
440 | if (!(taps.y & 0x80)) {
|
441 |
|
442 | temp |= 0x0C;
|
443 | this.io.i2cWriteReg(address, this.REGISTER.PULSE_THSY, taps.y);
|
444 | }
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445 |
|
446 | if (!(taps.z & 0x80)) {
|
447 |
|
448 | temp |= 0x30;
|
449 | this.io.i2cWriteReg(address, this.REGISTER.PULSE_THSZ, taps.z);
|
450 | }
|
451 |
|
452 | |
453 |
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454 |
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455 |
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456 |
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457 |
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458 |
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459 |
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460 |
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461 |
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462 |
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463 |
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464 |
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465 |
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466 |
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467 |
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468 |
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469 |
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470 |
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471 |
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472 |
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473 |
|
474 |
|
475 |
|
476 |
|
477 | this.io.i2cWriteReg(address, this.REGISTER.PULSE_CFG, temp | 0x40);
|
478 |
|
479 | |
480 |
|
481 |
|
482 |
|
483 |
|
484 |
|
485 | this.io.i2cWriteReg(address, this.REGISTER.PULSE_TMLT, 60 / (1000 / rates[odr]));
|
486 | |
487 |
|
488 |
|
489 |
|
490 |
|
491 |
|
492 |
|
493 |
|
494 | this.io.i2cWriteReg(address, this.REGISTER.PULSE_LTCY, 200 / (1000 / rates[odr]));
|
495 |
|
496 | |
497 |
|
498 |
|
499 |
|
500 |
|
501 |
|
502 |
|
503 |
|
504 |
|
505 |
|
506 | this.io.i2cWriteReg(address, this.REGISTER.PULSE_WIND, 0xFF);
|
507 |
|
508 | |
509 |
|
510 |
|
511 |
|
512 |
|
513 |
|
514 |
|
515 |
|
516 |
|
517 | config |= 0x01;
|
518 |
|
519 | this.io.i2cWriteReg(address, this.REGISTER.CTRL_REG1, config);
|
520 |
|
521 |
|
522 | this.io.i2cRead(address, this.REGISTER.STATUS, 7, function(data) {
|
523 | var status = (data.shift() & 0x08) >>> 3;
|
524 |
|
525 |
|
526 | if (status) {
|
527 |
|
528 |
|
529 |
|
530 | computed.x = int16(data[0], data[1]) >> 4;
|
531 | computed.y = int16(data[2], data[3]) >> 4;
|
532 | computed.z = int16(data[4], data[5]) >> 4;
|
533 |
|
534 | dataHandler(computed);
|
535 | }
|
536 | }.bind(this));
|
537 |
|
538 | this.io.i2cRead(address, this.REGISTER.PULSE_SRC, 1, function(data) {
|
539 | var status = data[0];
|
540 | var tap = status & 0x7F;
|
541 |
|
542 |
|
543 | if (status & 0x80) {
|
544 | this.emit("tap");
|
545 |
|
546 |
|
547 |
|
548 | if ((tap >> 2) & 0x01) {
|
549 | this.emit("tap:single");
|
550 |
|
551 |
|
552 |
|
553 | if ((tap >> 3) & 0x01) {
|
554 | this.emit("tap:double");
|
555 | }
|
556 | }
|
557 | }
|
558 | }.bind(this));
|
559 | },
|
560 | },
|
561 | toGravity: {
|
562 | value: function(raw) {
|
563 |
|
564 |
|
565 |
|
566 |
|
567 |
|
568 |
|
569 | var state = priv.get(this);
|
570 |
|
571 | return toFixed(raw / ((1 << 11) * state.scale), 4);
|
572 | }
|
573 | }
|
574 | },
|
575 | MMA7660: {
|
576 | ADDRESSES: {
|
577 | value: [0x4C]
|
578 | },
|
579 | REGISTER: {
|
580 | value: {
|
581 | XOUT: 0x00,
|
582 | MODE: 0x07,
|
583 | SR: 0x08,
|
584 | }
|
585 | },
|
586 | initialize: {
|
587 | value: function(opts, dataHandler) {
|
588 | var READLENGTH = 3;
|
589 | var address = opts.address || this.ADDRESSES[0];
|
590 | var state = priv.get(this);
|
591 |
|
592 | state.sensitivity = 21.33;
|
593 |
|
594 | opts.address = address;
|
595 |
|
596 | this.io.i2cConfig(opts);
|
597 |
|
598 |
|
599 |
|
600 | this.io.i2cWrite(address, this.REGISTER.MODE, 0x00);
|
601 |
|
602 |
|
603 | this.io.i2cWrite(address, this.REGISTER.SR, 0x07);
|
604 |
|
605 |
|
606 | this.io.i2cWrite(address, this.REGISTER.MODE, 0x01);
|
607 |
|
608 | this.io.i2cRead(address, this.REGISTER.XOUT, READLENGTH, function(data) {
|
609 | dataHandler({
|
610 |
|
611 |
|
612 |
|
613 | x: data[0] & 0b00111111,
|
614 | y: data[1] & 0b00111111,
|
615 | z: data[2] & 0b00111111,
|
616 | });
|
617 | });
|
618 | },
|
619 | },
|
620 | toGravity: {
|
621 | value: function(raw) {
|
622 | var state = priv.get(this);
|
623 |
|
624 | return toFixed(raw / state.sensitivity, 3);
|
625 | }
|
626 | }
|
627 | },
|
628 |
|
629 | ESPLORA: {
|
630 | DEFAULTS: {
|
631 | value: {
|
632 | zeroV: [320, 330, 310],
|
633 | sensitivity: 170
|
634 | }
|
635 | },
|
636 | initialize: {
|
637 | value: function(opts, dataHandler) {
|
638 | this.pins = [5, 11, 6];
|
639 | analogInitialize.call(this, opts, dataHandler);
|
640 | }
|
641 | },
|
642 | toGravity: {
|
643 | value: function(value, axis) {
|
644 | var read = analogToGravity.call(this, value, axis);
|
645 | return toFixed(read, 2);
|
646 | }
|
647 | }
|
648 | },
|
649 |
|
650 | LIS3DH: {
|
651 | ADDRESSES: {
|
652 | value: [0x18]
|
653 | },
|
654 | REGISTER: {
|
655 | value: {
|
656 | OUT_X_L: 0x28,
|
657 | CTRL_REG1: 0x20,
|
658 | CTRL_REG2: 0x21,
|
659 | CTRL_REG3: 0x22,
|
660 | CTRL_REG4: 0x23,
|
661 | CTRL_REG5: 0x24,
|
662 |
|
663 | TEMP_CFG_REG: 0x1F,
|
664 |
|
665 | CLICK_CFG: 0x38,
|
666 | CLICK_SRC: 0x39,
|
667 | CLICK_THS: 0x3A,
|
668 | TIME_LIMIT: 0x3B,
|
669 | TIME_LATENCY: 0x3C,
|
670 | TIME_WINDOW: 0x3D,
|
671 | }
|
672 | },
|
673 | initialize: {
|
674 | value: function(opts, dataHandler) {
|
675 | var state = priv.get(this);
|
676 | var address = opts.address || 0x18;
|
677 |
|
678 |
|
679 |
|
680 |
|
681 |
|
682 | var range = ({
|
683 | 2: 0,
|
684 | 4: 1,
|
685 | 8: 2,
|
686 | 16: 3
|
687 | })[opts.range || 4];
|
688 |
|
689 |
|
690 | if (range === undefined) {
|
691 | range = 1;
|
692 | }
|
693 |
|
694 | var divider = [
|
695 | 16380,
|
696 | 8190,
|
697 | 4096,
|
698 | 1365,
|
699 | ][range];
|
700 |
|
701 |
|
702 | if (divider === undefined) {
|
703 | divider = 1;
|
704 | }
|
705 |
|
706 | var threshold = [
|
707 | 80,
|
708 | 40,
|
709 | 20,
|
710 | 10,
|
711 | ][range];
|
712 |
|
713 |
|
714 | if (threshold === undefined) {
|
715 | threshold = 10;
|
716 | }
|
717 |
|
718 |
|
719 | state.divider = divider;
|
720 | state.expander = Expander.get({
|
721 | address: address,
|
722 | controller: this.controller,
|
723 | bus: this.bus,
|
724 | });
|
725 |
|
726 |
|
727 | var ctrl4 = 0x88 | (range << 4);
|
728 |
|
729 | state.expander.i2cWrite(address, this.REGISTER.CTRL_REG4, ctrl4);
|
730 |
|
731 |
|
732 | state.expander.i2cReadOnce(address, this.REGISTER.CTRL_REG1, 1, function(data) {
|
733 | var ctrl1 = data[0];
|
734 |
|
735 |
|
736 | ctrl1 &= ~0xF0;
|
737 | ctrl1 |= 6 << 4;
|
738 |
|
739 | state.expander.i2cWrite(address, this.REGISTER.CTRL_REG1, ctrl1);
|
740 |
|
741 |
|
742 |
|
743 |
|
744 | state.expander.i2cRead(address, this.REGISTER.OUT_X_L | 0x80, 6, function(data) {
|
745 | dataHandler({
|
746 | x: Fn.int16(data[1], data[0]),
|
747 | y: Fn.int16(data[3], data[2]),
|
748 | z: Fn.int16(data[5], data[4]),
|
749 | });
|
750 | });
|
751 |
|
752 |
|
753 |
|
754 |
|
755 |
|
756 |
|
757 |
|
758 |
|
759 |
|
760 |
|
761 |
|
762 |
|
763 |
|
764 |
|
765 |
|
766 |
|
767 |
|
768 |
|
769 |
|
770 |
|
771 |
|
772 |
|
773 |
|
774 |
|
775 |
|
776 |
|
777 |
|
778 |
|
779 |
|
780 |
|
781 |
|
782 |
|
783 | state.expander.i2cWrite(address, this.REGISTER.CTRL_REG3, 0x80);
|
784 |
|
785 |
|
786 |
|
787 | state.expander.i2cWrite(address, this.REGISTER.CTRL_REG5, 0x08);
|
788 |
|
789 |
|
790 |
|
791 |
|
792 |
|
793 |
|
794 |
|
795 | state.expander.i2cWrite(address, this.REGISTER.CLICK_CFG, 0x2A);
|
796 |
|
797 |
|
798 |
|
799 |
|
800 |
|
801 |
|
802 | var timelimit = 10;
|
803 | var timelatency = 20;
|
804 | var timewindow = 255;
|
805 |
|
806 | state.expander.i2cWrite(address, this.REGISTER.CLICK_THS, threshold);
|
807 | state.expander.i2cWrite(address, this.REGISTER.TIME_LIMIT, timelimit);
|
808 | state.expander.i2cWrite(address, this.REGISTER.TIME_LATENCY, timelatency);
|
809 | state.expander.i2cWrite(address, this.REGISTER.TIME_WINDOW, timewindow);
|
810 |
|
811 |
|
812 |
|
813 | var lastEmitTime = null;
|
814 |
|
815 | state.expander.i2cRead(address, this.REGISTER.CLICK_SRC, 1, function(data) {
|
816 | var status = data[0];
|
817 | var thisEmitTime = Date.now();
|
818 |
|
819 |
|
820 | if (lastEmitTime === null) {
|
821 | lastEmitTime = thisEmitTime - 101;
|
822 | }
|
823 |
|
824 |
|
825 | if (thisEmitTime < (lastEmitTime + 100)) {
|
826 | return;
|
827 | }
|
828 |
|
829 | if (status === 0x00) {
|
830 | return;
|
831 | }
|
832 |
|
833 |
|
834 | if (!(status & 0x30)) {
|
835 | return;
|
836 | }
|
837 |
|
838 | lastEmitTime = thisEmitTime;
|
839 |
|
840 | this.emit("tap");
|
841 |
|
842 | if (status & 0x10) {
|
843 | this.emit("tap:single");
|
844 | }
|
845 |
|
846 | if (status & 0x20) {
|
847 |
|
848 |
|
849 | this.emit("tap:single");
|
850 | this.emit("tap:double");
|
851 | }
|
852 | }.bind(this));
|
853 | }.bind(this));
|
854 | },
|
855 | },
|
856 | toGravity: {
|
857 | value: function(raw) {
|
858 |
|
859 | var state = priv.get(this);
|
860 | return toFixed(raw / state.divider, 3);
|
861 | },
|
862 | },
|
863 | },
|
864 | LSM303C: {
|
865 | initialize: {
|
866 | value: function(opts, dataHandler) {
|
867 | var IMU = require("./imu");
|
868 | var driver = IMU.Drivers.get(this.board, "LSM303C", opts);
|
869 | driver.on("data", function(data) {
|
870 | dataHandler(data.accelerometer);
|
871 | });
|
872 | }
|
873 | },
|
874 | toGravity: {
|
875 | value: function(raw) {
|
876 | return toFixed(raw, 2);
|
877 | }
|
878 | }
|
879 | },
|
880 | };
|
881 |
|
882 |
|
883 | Controllers.TINKERKIT = Controllers.ANALOG;
|
884 | Controllers.MMA8452Q = Controllers.MMA8452;
|
885 |
|
886 | function magnitude(x, y, z) {
|
887 | var a;
|
888 |
|
889 | a = x * x;
|
890 | a = fma(y, y, a);
|
891 | a = fma(z, z, a);
|
892 |
|
893 | return Math.sqrt(a);
|
894 | }
|
895 |
|
896 |
|
897 |
|
898 |
|
899 |
|
900 |
|
901 |
|
902 |
|
903 |
|
904 |
|
905 |
|
906 |
|
907 |
|
908 |
|
909 |
|
910 |
|
911 |
|
912 |
|
913 | function Accelerometer(opts) {
|
914 | if (!(this instanceof Accelerometer)) {
|
915 | return new Accelerometer(opts);
|
916 | }
|
917 |
|
918 | var controller = null;
|
919 |
|
920 | var state = {
|
921 | enabled: true,
|
922 | x: {
|
923 | value: 0,
|
924 | previous: 0,
|
925 | stash: [],
|
926 | orientation: null,
|
927 | inclination: null,
|
928 | acceleration: null,
|
929 | calibration: []
|
930 | },
|
931 | y: {
|
932 | value: 0,
|
933 | previous: 0,
|
934 | stash: [],
|
935 | orientation: null,
|
936 | inclination: null,
|
937 | acceleration: null,
|
938 | calibration: []
|
939 | },
|
940 | z: {
|
941 | value: 0,
|
942 | previous: 0,
|
943 | stash: [],
|
944 | orientation: null,
|
945 | inclination: null,
|
946 | acceleration: null,
|
947 | calibration: []
|
948 | }
|
949 | };
|
950 |
|
951 | Board.Component.call(
|
952 | this, opts = Board.Options(opts)
|
953 | );
|
954 |
|
955 | if (opts.controller && typeof opts.controller === "string") {
|
956 | controller = Controllers[opts.controller.toUpperCase()];
|
957 | } else {
|
958 | controller = opts.controller;
|
959 | }
|
960 |
|
961 | if (controller == null) {
|
962 | controller = Controllers.ANALOG;
|
963 | }
|
964 |
|
965 | Board.Controller.call(this, controller, opts);
|
966 |
|
967 | if (!this.toGravity) {
|
968 | this.toGravity = opts.toGravity || function(raw) {
|
969 | return raw;
|
970 | };
|
971 | }
|
972 |
|
973 | if (!this.enabledChanged) {
|
974 | this.enabledChanged = function() {};
|
975 | }
|
976 |
|
977 | priv.set(this, state);
|
978 |
|
979 |
|
980 | if (typeof this.initialize === "function") {
|
981 | this.initialize(opts, function(data) {
|
982 | var isChange = false;
|
983 |
|
984 | if (!state.enabled) {
|
985 | return;
|
986 | }
|
987 |
|
988 | Object.keys(data).forEach(function(axis) {
|
989 | var value = data[axis];
|
990 | var sensor = state[axis];
|
991 |
|
992 | if (opts.autoCalibrate && sensor.calibration.length < calibrationSize) {
|
993 | var axisIndex = axes.indexOf(axis);
|
994 | sensor.calibration.push(value);
|
995 |
|
996 | if (!Array.isArray(state.zeroV)) {
|
997 | state.zeroV = [];
|
998 | }
|
999 |
|
1000 | state.zeroV[axisIndex] = sum(sensor.calibration) / sensor.calibration.length;
|
1001 | if (axis === aZ) {
|
1002 | state.zeroV[axisIndex] -= state.sensitivity;
|
1003 | }
|
1004 | }
|
1005 |
|
1006 |
|
1007 |
|
1008 | if (sensor.stash.length === 0) {
|
1009 | for (var i = 0; i < 5; i++) {
|
1010 | sensor.stash[i] = value;
|
1011 | }
|
1012 | }
|
1013 |
|
1014 | sensor.previous = sensor.value;
|
1015 | sensor.stash.shift();
|
1016 | sensor.stash.push(value);
|
1017 |
|
1018 | sensor.value = (sum(sensor.stash) / 5) | 0;
|
1019 |
|
1020 | if (this.acceleration !== sensor.acceleration) {
|
1021 | sensor.acceleration = this.acceleration;
|
1022 | isChange = true;
|
1023 | this.emit("acceleration", sensor.acceleration);
|
1024 | }
|
1025 |
|
1026 | if (this.orientation !== sensor.orientation) {
|
1027 | sensor.orientation = this.orientation;
|
1028 | isChange = true;
|
1029 | this.emit("orientation", sensor.orientation);
|
1030 | }
|
1031 |
|
1032 | if (this.inclination !== sensor.inclination) {
|
1033 | sensor.inclination = this.inclination;
|
1034 | isChange = true;
|
1035 | this.emit("inclination", sensor.inclination);
|
1036 | }
|
1037 | }, this);
|
1038 |
|
1039 | this.emit("data", {
|
1040 | x: state.x.value,
|
1041 | y: state.y.value,
|
1042 | z: state.z.value
|
1043 | });
|
1044 |
|
1045 | if (isChange) {
|
1046 | this.emit("change", {
|
1047 | x: this.x,
|
1048 | y: this.y,
|
1049 | z: this.z
|
1050 | });
|
1051 | }
|
1052 | }.bind(this));
|
1053 | }
|
1054 |
|
1055 | Object.defineProperties(this, {
|
1056 | hasAxis: {
|
1057 | writable: true,
|
1058 | value: function(axis) {
|
1059 |
|
1060 | return state[axis] ? state[axis].stash.length > 0 : false;
|
1061 | }
|
1062 | },
|
1063 | enable: {
|
1064 | value: function() {
|
1065 | state.enabled = true;
|
1066 | this.enabledChanged(true);
|
1067 | return this;
|
1068 | }
|
1069 | },
|
1070 | disable: {
|
1071 | value: function() {
|
1072 | state.enabled = false;
|
1073 | this.enabledChanged(false);
|
1074 | return this;
|
1075 | }
|
1076 | },
|
1077 | zeroV: {
|
1078 | get: function() {
|
1079 | return state.zeroV;
|
1080 | }
|
1081 | },
|
1082 | |
1083 |
|
1084 |
|
1085 |
|
1086 |
|
1087 | pitch: {
|
1088 | get: function() {
|
1089 | var x = this.x;
|
1090 | var y = this.y;
|
1091 | var z = this.z;
|
1092 | var rads = this.hasAxis(aZ) ?
|
1093 | Math.atan2(x, Math.hypot(y, z)) :
|
1094 | Math.asin(constrain(x, -1, 1));
|
1095 |
|
1096 | return toFixed(rads * Fn.RAD_TO_DEG, 2);
|
1097 | }
|
1098 | },
|
1099 | |
1100 |
|
1101 |
|
1102 |
|
1103 |
|
1104 | roll: {
|
1105 | get: function() {
|
1106 | var x = this.x;
|
1107 | var y = this.y;
|
1108 | var z = this.z;
|
1109 | var rads = this.hasAxis(aZ) ?
|
1110 | Math.atan2(y, Math.hypot(x, z)) :
|
1111 | Math.asin(constrain(y, -1, 1));
|
1112 |
|
1113 | return toFixed(rads * Fn.RAD_TO_DEG, 2);
|
1114 | }
|
1115 | },
|
1116 | x: {
|
1117 | get: function() {
|
1118 | return this.toGravity(state.x.value, aX);
|
1119 | }
|
1120 | },
|
1121 | y: {
|
1122 | get: function() {
|
1123 | return this.toGravity(state.y.value, aY);
|
1124 | }
|
1125 | },
|
1126 | z: {
|
1127 | get: function() {
|
1128 | return this.hasAxis(aZ) ?
|
1129 | this.toGravity(state.z.value, aZ) : 0;
|
1130 | }
|
1131 | },
|
1132 | acceleration: {
|
1133 | get: function() {
|
1134 | return magnitude(
|
1135 | this.x,
|
1136 | this.y,
|
1137 | this.z
|
1138 | );
|
1139 | }
|
1140 | },
|
1141 | inclination: {
|
1142 | get: function() {
|
1143 | return Math.atan2(this.y, this.x) * Fn.RAD_TO_DEG;
|
1144 | }
|
1145 | },
|
1146 | orientation: {
|
1147 | get: function() {
|
1148 | var abs = Math.abs;
|
1149 | var x = this.x;
|
1150 | var y = this.y;
|
1151 | var z = this.hasAxis(aZ) ? this.z : 1;
|
1152 | var absX = abs(x);
|
1153 | var absY = abs(y);
|
1154 | var absZ = abs(z);
|
1155 |
|
1156 | if (absX < absY && absX < absZ) {
|
1157 | if (x > 0) {
|
1158 | return 1;
|
1159 | }
|
1160 | return -1;
|
1161 | }
|
1162 | if (absY < absX && absY < absZ) {
|
1163 | if (y > 0) {
|
1164 | return 2;
|
1165 | }
|
1166 | return -2;
|
1167 | }
|
1168 | if (absZ < absX && absZ < absY) {
|
1169 |
|
1170 |
|
1171 | if (z > 0) {
|
1172 | return 3;
|
1173 | }
|
1174 |
|
1175 | return -3;
|
1176 | }
|
1177 | return 0;
|
1178 | }
|
1179 | }
|
1180 | });
|
1181 | }
|
1182 |
|
1183 | util.inherits(Accelerometer, Emitter);
|
1184 |
|
1185 |
|
1186 | if (!!process.env.IS_TEST_MODE) {
|
1187 | Accelerometer.Controllers = Controllers;
|
1188 | Accelerometer.purge = function() {
|
1189 | priv.clear();
|
1190 | };
|
1191 | }
|
1192 |
|
1193 |
|
1194 | module.exports = Accelerometer;
|