1 | var Emitter = require("events").EventEmitter;
|
2 | var util = require("util");
|
3 |
|
4 | var Board = require("./board");
|
5 | var Fn = require("./fn");
|
6 |
|
7 | var toFixed = Fn.toFixed;
|
8 |
|
9 | var CELSIUS_TO_KELVIN = 273.15;
|
10 |
|
11 | function analogHandler(opts, dataHandler) {
|
12 | var pin = opts.pin;
|
13 |
|
14 | this.io.pinMode(pin, this.io.MODES.ANALOG);
|
15 | this.io.analogRead(pin, function(data) {
|
16 | dataHandler.call(this, data);
|
17 | }.bind(this));
|
18 | }
|
19 |
|
20 | var activeDrivers = new Map();
|
21 |
|
22 | var Drivers = {
|
23 | MAX31850K: {
|
24 | initialize: {
|
25 | value: function(board, opts) {
|
26 | var CONSTANTS = {
|
27 | TEMPERATURE_FAMILY: 0x3B,
|
28 | CONVERT_TEMPERATURE_COMMAND: 0x44,
|
29 | READ_SCRATCHPAD_COMMAND: 0xBE,
|
30 | READ_COUNT: 9
|
31 | },
|
32 | pin = opts.pin,
|
33 | freq = opts.freq || 100,
|
34 | getAddress, readTemperature, isConversionAvailable, getAddresses, readOne;
|
35 |
|
36 | getAddress = function(device) {
|
37 |
|
38 |
|
39 |
|
40 |
|
41 | var i, result = 0;
|
42 | for (i = 6; i > 0; i--) {
|
43 | result = result * 256 + device[i];
|
44 | }
|
45 | return result;
|
46 | };
|
47 |
|
48 | board.io.sendOneWireConfig(pin, true);
|
49 | board.io.sendOneWireSearch(pin, function(err, devices) {
|
50 | if (err) {
|
51 | this.emit("error", err);
|
52 | return;
|
53 | }
|
54 |
|
55 | this.devices = devices.filter(function(device) {
|
56 | return device[0] === CONSTANTS.TEMPERATURE_FAMILY;
|
57 | }, this);
|
58 |
|
59 | if (devices.length === 0) {
|
60 | this.emit("error", new Error("FAILED TO FIND TEMPERATURE DEVICE"));
|
61 | return;
|
62 | }
|
63 |
|
64 | this.devices.forEach(function(device) {
|
65 | this.emit("initialized", getAddress(device));
|
66 | }.bind(this));
|
67 |
|
68 | getAddresses = function() {
|
69 | if (this.addresses) {
|
70 | return this.devices.filter(function(device) {
|
71 | var address = getAddress(device);
|
72 | return this.addresses.includes(address);
|
73 | }, this);
|
74 | } else {
|
75 | return [this.devices[0]];
|
76 | }
|
77 | }.bind(this);
|
78 |
|
79 | readTemperature = function() {
|
80 | var devicesToWait, devicesToRead, result;
|
81 |
|
82 |
|
83 | devicesToWait = getAddresses();
|
84 | devicesToRead = getAddresses();
|
85 |
|
86 | devicesToRead.forEach(function(device) {
|
87 | board.io.sendOneWireReset(pin);
|
88 | board.io.sendOneWireWrite(pin, device, CONSTANTS.CONVERT_TEMPERATURE_COMMAND);
|
89 | });
|
90 |
|
91 | isConversionAvailable = function(done) {
|
92 | var nextDevice;
|
93 |
|
94 | if (devicesToWait.length === 0) {
|
95 | return done();
|
96 | }
|
97 |
|
98 | nextDevice = devicesToWait.pop();
|
99 |
|
100 | board.io.sendOneWireReset(pin);
|
101 |
|
102 | board.io.sendOneWireWriteAndRead(pin, nextDevice, CONSTANTS.READ_SCRATCHPAD_COMMAND, CONSTANTS.READ_COUNT, function(err, data) {
|
103 | if (!data[0]) {
|
104 | devicesToWait.push(nextDevice);
|
105 |
|
106 | if (data[1] !== 0) {
|
107 | return done();
|
108 | }
|
109 | }
|
110 |
|
111 | isConversionAvailable(done);
|
112 | });
|
113 | }.bind(this);
|
114 |
|
115 | readOne = function() {
|
116 | var device;
|
117 |
|
118 | if (devicesToRead.length === 0) {
|
119 | setTimeout(readTemperature, freq);
|
120 | return;
|
121 | }
|
122 |
|
123 | device = devicesToRead.pop();
|
124 |
|
125 | board.io.sendOneWireReset(pin);
|
126 |
|
127 | board.io.sendOneWireWriteAndRead(pin, device, CONSTANTS.READ_SCRATCHPAD_COMMAND, CONSTANTS.READ_COUNT, function(err, data) {
|
128 | if (err) {
|
129 | this.emit("error", err);
|
130 | return;
|
131 | }
|
132 |
|
133 | result = (data[1] << 8) | data[0];
|
134 | this.emit("data", getAddress(device), result);
|
135 |
|
136 | readOne();
|
137 | }.bind(this));
|
138 | }.bind(this);
|
139 |
|
140 | isConversionAvailable(readOne);
|
141 | }.bind(this);
|
142 |
|
143 | readTemperature();
|
144 | }.bind(this));
|
145 | }
|
146 | },
|
147 | register: {
|
148 | value: function(address) {
|
149 | if (!this.addresses) {
|
150 | this.addresses = [];
|
151 | }
|
152 |
|
153 | this.addresses.push(address);
|
154 | }
|
155 | }
|
156 | },
|
157 | DS18B20: {
|
158 | initialize: {
|
159 | value: function(board, opts) {
|
160 | var CONSTANTS = {
|
161 | TEMPERATURE_FAMILY: 0x28,
|
162 | CONVERT_TEMPERATURE_COMMAND: 0x44,
|
163 | READ_SCRATCHPAD_COMMAND: 0xBE,
|
164 | READ_COUNT: 2
|
165 | },
|
166 | pin = opts.pin,
|
167 | freq = opts.freq || 100,
|
168 | getAddress, readThermometer, readOne;
|
169 |
|
170 | getAddress = function(device) {
|
171 |
|
172 |
|
173 |
|
174 |
|
175 | var i, result = 0;
|
176 | for (i = 6; i > 0; i--) {
|
177 | result = result * 256 + device[i];
|
178 | }
|
179 | return result;
|
180 | };
|
181 |
|
182 | board.io.sendOneWireConfig(pin, true);
|
183 | board.io.sendOneWireSearch(pin, function(err, devices) {
|
184 | if (err) {
|
185 | this.emit("error", err);
|
186 | return;
|
187 | }
|
188 |
|
189 | this.devices = devices.filter(function(device) {
|
190 | return device[0] === CONSTANTS.TEMPERATURE_FAMILY;
|
191 | }, this);
|
192 |
|
193 | if (devices.length === 0) {
|
194 | this.emit("error", new Error("FAILED TO FIND TEMPERATURE DEVICE"));
|
195 | return;
|
196 | }
|
197 |
|
198 | this.devices.forEach(function(device) {
|
199 | this.emit("initialized", getAddress(device));
|
200 | }.bind(this));
|
201 |
|
202 | readThermometer = function() {
|
203 | var devicesToRead, result;
|
204 |
|
205 |
|
206 | if (this.addresses) {
|
207 | devicesToRead = this.devices.filter(function(device) {
|
208 | var address = getAddress(device);
|
209 | return this.addresses.includes(address);
|
210 | }, this);
|
211 | } else {
|
212 | devicesToRead = [this.devices[0]];
|
213 | }
|
214 |
|
215 | devicesToRead.forEach(function(device) {
|
216 | board.io.sendOneWireReset(pin);
|
217 | board.io.sendOneWireWrite(pin, device, CONSTANTS.CONVERT_TEMPERATURE_COMMAND);
|
218 | });
|
219 |
|
220 |
|
221 | board.io.sendOneWireDelay(pin, 1);
|
222 |
|
223 | readOne = function() {
|
224 | var device;
|
225 |
|
226 | if (devicesToRead.length === 0) {
|
227 | setTimeout(readThermometer, freq);
|
228 | return;
|
229 | }
|
230 |
|
231 | device = devicesToRead.pop();
|
232 |
|
233 | board.io.sendOneWireReset(pin);
|
234 |
|
235 | board.io.sendOneWireWriteAndRead(pin, device, CONSTANTS.READ_SCRATCHPAD_COMMAND, CONSTANTS.READ_COUNT, function(err, data) {
|
236 | if (err) {
|
237 | this.emit("error", err);
|
238 | return;
|
239 | }
|
240 |
|
241 | result = (data[1] << 8) | data[0];
|
242 | this.emit("data", getAddress(device), result);
|
243 |
|
244 | readOne();
|
245 | }.bind(this));
|
246 | }.bind(this);
|
247 |
|
248 | readOne();
|
249 | }.bind(this);
|
250 |
|
251 | readThermometer();
|
252 | }.bind(this));
|
253 | }
|
254 | },
|
255 | register: {
|
256 | value: function(address) {
|
257 | if (!this.addresses) {
|
258 | this.addresses = [];
|
259 | }
|
260 |
|
261 | this.addresses.push(address);
|
262 | }
|
263 | }
|
264 | }
|
265 | };
|
266 |
|
267 | Drivers.get = function(board, driverName, opts) {
|
268 | var drivers, driver;
|
269 |
|
270 | if (!activeDrivers.has(board)) {
|
271 | activeDrivers.set(board, {});
|
272 | }
|
273 |
|
274 | drivers = activeDrivers.get(board);
|
275 |
|
276 | var key = driverName + "_" + opts.pin;
|
277 |
|
278 | if (!drivers[key]) {
|
279 | driver = new Emitter();
|
280 | Object.defineProperties(driver, Drivers[driverName]);
|
281 | driver.initialize(board, opts);
|
282 | drivers[key] = driver;
|
283 | }
|
284 |
|
285 | return drivers[key];
|
286 | };
|
287 |
|
288 | Drivers.clear = function() {
|
289 | activeDrivers.clear();
|
290 | };
|
291 |
|
292 |
|
293 |
|
294 | var Controllers = {
|
295 |
|
296 | ANALOG: {
|
297 | initialize: {
|
298 | value: analogHandler
|
299 | }
|
300 | },
|
301 |
|
302 | LM35: {
|
303 | initialize: {
|
304 | value: analogHandler
|
305 | },
|
306 | toCelsius: {
|
307 | value: function(raw) {
|
308 |
|
309 |
|
310 |
|
311 |
|
312 | var mV = this.aref * 1000 * raw / 1023;
|
313 |
|
314 |
|
315 |
|
316 |
|
317 | return Math.round(mV / 10);
|
318 | }
|
319 | }
|
320 | },
|
321 |
|
322 | LM335: {
|
323 | initialize: {
|
324 | value: analogHandler
|
325 | },
|
326 | toCelsius: {
|
327 | value: function(raw) {
|
328 |
|
329 |
|
330 | var mV = this.aref * 1000 * raw / 1023;
|
331 |
|
332 |
|
333 | return Math.round((mV / 10) - CELSIUS_TO_KELVIN);
|
334 | }
|
335 | }
|
336 | },
|
337 |
|
338 | TMP36: {
|
339 | initialize: {
|
340 | value: analogHandler
|
341 | },
|
342 | toCelsius: {
|
343 | value: function(raw) {
|
344 |
|
345 | var mV = this.aref * 1000 * raw / 1023;
|
346 |
|
347 |
|
348 |
|
349 |
|
350 |
|
351 |
|
352 | return Math.round((mV / 10) - 50);
|
353 | }
|
354 | }
|
355 | },
|
356 |
|
357 | TMP102: {
|
358 | ADDRESSES: {
|
359 | value: [0x48]
|
360 | },
|
361 | initialize: {
|
362 | value: function(opts, dataHandler) {
|
363 | var address = opts.address || this.ADDRESSES[0];
|
364 |
|
365 | opts.address = address;
|
366 |
|
367 | this.io.i2cConfig(opts);
|
368 |
|
369 |
|
370 |
|
371 | this.io.i2cRead(address, 0x00, 2, function(data) {
|
372 |
|
373 | var raw = ((data[0] << 8) | data[1]) >> 4;
|
374 |
|
375 |
|
376 | if (raw & (1 << 11)) {
|
377 | raw |= 0xF800;
|
378 | }
|
379 |
|
380 |
|
381 | raw = raw >> 15 ? ((raw ^ 0xFFFF) + 1) * -1 : raw;
|
382 |
|
383 | dataHandler(raw);
|
384 | });
|
385 | }
|
386 | },
|
387 | toCelsius: {
|
388 | value: function(raw) {
|
389 |
|
390 |
|
391 | return toFixed(raw / 16, 1);
|
392 | }
|
393 | },
|
394 | },
|
395 |
|
396 | MAX31850K: {
|
397 | initialize: {
|
398 | value: function(opts, dataHandler) {
|
399 | var state = priv.get(this),
|
400 | address = opts.address,
|
401 | driver = Drivers.get(this.board, "MAX31850K", opts);
|
402 |
|
403 | if (address) {
|
404 | state.address = address;
|
405 | driver.register(address);
|
406 | } else {
|
407 | if (driver.addressless) {
|
408 | this.emit("error", "You cannot have more than one MAX31850K without an address");
|
409 | }
|
410 | driver.addressless = true;
|
411 | }
|
412 |
|
413 | driver.once("initialized", function(dataAddress) {
|
414 | if (!state.address) {
|
415 | state.address = dataAddress;
|
416 | }
|
417 | });
|
418 |
|
419 | driver.on("data", function(dataAddress, data) {
|
420 | if (!address || dataAddress === address) {
|
421 | dataHandler(data);
|
422 | }
|
423 | }.bind(this));
|
424 | }
|
425 | },
|
426 | toCelsius: {
|
427 |
|
428 |
|
429 | value: function(raw) {
|
430 | return toFixed(raw / 16, 2);
|
431 | }
|
432 | },
|
433 | address: {
|
434 | get: function() {
|
435 | return priv.get(this).address || 0x00;
|
436 | }
|
437 | }
|
438 | },
|
439 |
|
440 |
|
441 |
|
442 |
|
443 |
|
444 |
|
445 |
|
446 |
|
447 |
|
448 | DS18B20: {
|
449 | initialize: {
|
450 | value: function(opts, dataHandler) {
|
451 | var state = priv.get(this),
|
452 | address = opts.address,
|
453 | driver = Drivers.get(this.board, "DS18B20", opts);
|
454 |
|
455 | if (address) {
|
456 | state.address = address;
|
457 | driver.register(address);
|
458 | } else {
|
459 | if (driver.addressless) {
|
460 | this.emit("error", "You cannot have more than one DS18B20 without an address");
|
461 | }
|
462 | driver.addressless = true;
|
463 | }
|
464 |
|
465 | driver.once("initialized", function(dataAddress) {
|
466 | if (!state.address) {
|
467 | state.address = dataAddress;
|
468 | }
|
469 | });
|
470 |
|
471 | driver.on("data", function(dataAddress, data) {
|
472 | if (!address || dataAddress === address) {
|
473 | dataHandler(data);
|
474 | }
|
475 | });
|
476 | }
|
477 | },
|
478 | toCelsius: {
|
479 | value: function(raw) {
|
480 |
|
481 |
|
482 |
|
483 |
|
484 |
|
485 |
|
486 |
|
487 |
|
488 | return toFixed(raw / 16, 4);
|
489 | }
|
490 | },
|
491 | address: {
|
492 | get: function() {
|
493 | return priv.get(this).address || 0x00;
|
494 | }
|
495 | }
|
496 | },
|
497 |
|
498 |
|
499 | SHT31D: {
|
500 | initialize: {
|
501 | value: function(opts, dataHandler) {
|
502 | var Multi = require("./imu");
|
503 | var driver = Multi.Drivers.get(this.board, "SHT31D", opts);
|
504 | driver.on("data", function(data) {
|
505 | dataHandler(data.temperature);
|
506 | });
|
507 | }
|
508 | },
|
509 | toCelsius: {
|
510 | value: function(raw) {
|
511 |
|
512 |
|
513 |
|
514 |
|
515 |
|
516 |
|
517 |
|
518 | return toFixed((175 * raw / 65535) - 45, 3);
|
519 | }
|
520 | }
|
521 | },
|
522 |
|
523 | HTU21D: {
|
524 | initialize: {
|
525 | value: function(opts, dataHandler) {
|
526 | var Multi = require("./imu");
|
527 | var driver = Multi.Drivers.get(this.board, "HTU21D", opts);
|
528 | driver.on("data", function(data) {
|
529 | dataHandler(data.temperature);
|
530 | });
|
531 | }
|
532 | },
|
533 | toCelsius: {
|
534 | value: function(raw) {
|
535 |
|
536 |
|
537 |
|
538 |
|
539 |
|
540 |
|
541 |
|
542 |
|
543 | return toFixed((175.72 * raw / 65536) - 46.85, 2);
|
544 | }
|
545 | }
|
546 | },
|
547 | HIH6130: {
|
548 | initialize: {
|
549 | value: function(opts, dataHandler) {
|
550 | var Multi = require("./imu");
|
551 | var driver = Multi.Drivers.get(this.board, "HIH6130", opts);
|
552 | driver.on("data", function(data) {
|
553 | dataHandler(data.temperature);
|
554 | });
|
555 | }
|
556 | },
|
557 | toCelsius: {
|
558 | value: function(raw) {
|
559 |
|
560 |
|
561 |
|
562 |
|
563 |
|
564 |
|
565 | return Math.round(raw / 1000);
|
566 | }
|
567 | }
|
568 | },
|
569 |
|
570 | DHT_I2C_NANO_BACKPACK: {
|
571 | initialize: {
|
572 | value: function(opts, dataHandler) {
|
573 | var Multi = require("./imu");
|
574 | var driver = Multi.Drivers.get(this.board, "DHT_I2C_NANO_BACKPACK", opts);
|
575 | driver.on("data", function(data) {
|
576 | dataHandler(data.temperature);
|
577 | });
|
578 | }
|
579 | },
|
580 | toCelsius: {
|
581 | value: function(raw) {
|
582 |
|
583 |
|
584 |
|
585 | return Math.round(raw / 100);
|
586 | }
|
587 | }
|
588 | },
|
589 |
|
590 | TH02: {
|
591 | initialize: {
|
592 | value: function(opts, dataHandler) {
|
593 | var Multi = require("./imu");
|
594 | var driver = Multi.Drivers.get(this.board, "TH02", opts);
|
595 | driver.on("data", function(data) {
|
596 | dataHandler(data.temperature);
|
597 | });
|
598 | }
|
599 | },
|
600 | toCelsius: {
|
601 | value: function(raw) {
|
602 |
|
603 |
|
604 |
|
605 | return toFixed(raw, 1);
|
606 | }
|
607 | }
|
608 | },
|
609 |
|
610 | MPU6050: {
|
611 | initialize: {
|
612 | value: function(opts, dataHandler) {
|
613 | var IMU = require("./imu");
|
614 | var driver = IMU.Drivers.get(this.board, "MPU6050", opts);
|
615 | driver.on("data", function(data) {
|
616 | dataHandler(data.temperature);
|
617 | });
|
618 | }
|
619 | },
|
620 | toCelsius: {
|
621 | value: function(raw) {
|
622 |
|
623 | return Math.round((raw / 340.00) + 36.53);
|
624 | }
|
625 | }
|
626 | },
|
627 |
|
628 | BNO055: {
|
629 | initialize: {
|
630 | value: function(opts, dataHandler) {
|
631 | var IMU = require("./imu");
|
632 | var driver = IMU.Drivers.get(this.board, "BNO055", opts);
|
633 | driver.on("data", function(data) {
|
634 | dataHandler(data.temperature);
|
635 | });
|
636 | }
|
637 | },
|
638 | toCelsius: {
|
639 | value: function(raw) {
|
640 |
|
641 |
|
642 |
|
643 |
|
644 | return Math.trunc(raw);
|
645 | }
|
646 | }
|
647 | },
|
648 |
|
649 | MPL115A2: {
|
650 | initialize: {
|
651 | value: function(opts, dataHandler) {
|
652 | var Multi = require("./imu");
|
653 | var driver = Multi.Drivers.get(this.board, "MPL115A2", opts);
|
654 | driver.on("data", function(data) {
|
655 | dataHandler(data.temperature);
|
656 | });
|
657 | }
|
658 | },
|
659 | toCelsius: {
|
660 | value: function(raw) {
|
661 |
|
662 | return Math.trunc((raw - 498) / -5.35 + 25);
|
663 | }
|
664 | }
|
665 | },
|
666 |
|
667 | MPL3115A2: {
|
668 | initialize: {
|
669 | value: function(opts, dataHandler) {
|
670 | var Multi = require("./imu");
|
671 | var driver = Multi.Drivers.get(this.board, "MPL3115A2", opts);
|
672 | driver.on("data", function(data) {
|
673 | dataHandler(data.temperature);
|
674 | });
|
675 | }
|
676 | },
|
677 | toCelsius: {
|
678 | value: function(raw) {
|
679 |
|
680 |
|
681 |
|
682 | return Math.round(raw / 16);
|
683 | }
|
684 | }
|
685 | },
|
686 |
|
687 | MS5611: {
|
688 | initialize: {
|
689 | value: function(opts, dataHandler) {
|
690 | var Multi = require("./imu");
|
691 | var driver = Multi.Drivers.get(this.board, "MS5611", opts);
|
692 | driver.on("data", function(data) {
|
693 | dataHandler(data.temperature);
|
694 | });
|
695 | }
|
696 | },
|
697 | toCelsius: {
|
698 | value: function(raw) {
|
699 |
|
700 |
|
701 |
|
702 | return toFixed(raw, 2);
|
703 | }
|
704 | }
|
705 | },
|
706 |
|
707 | GROVE: {
|
708 | initialize: {
|
709 | value: analogHandler
|
710 | },
|
711 | toCelsius: {
|
712 | value: function(raw) {
|
713 |
|
714 | var adcres = 1023;
|
715 |
|
716 | var beta = 3975;
|
717 |
|
718 | var rb = 10000;
|
719 |
|
720 |
|
721 |
|
722 | var tempr = 298.15;
|
723 |
|
724 | var rthermistor = (adcres - raw) * rb / raw;
|
725 | var tempc = 1 / (Math.log(rthermistor / rb) / beta + 1 / tempr) - CELSIUS_TO_KELVIN;
|
726 |
|
727 | return Math.round(tempc);
|
728 | }
|
729 | }
|
730 | },
|
731 |
|
732 |
|
733 | TINKERKIT: {
|
734 | initialize: {
|
735 | value: analogHandler
|
736 | },
|
737 | toCelsius: {
|
738 | value: function(raw) {
|
739 | var adcres = 1023;
|
740 | var beta = 3950;
|
741 | var rb = 10000;
|
742 | var ginf = 120.6685;
|
743 |
|
744 | var rthermistor = rb * (adcres / raw - 1);
|
745 | var tempc = beta / (Math.log(rthermistor * ginf));
|
746 |
|
747 | return Math.round(tempc - CELSIUS_TO_KELVIN);
|
748 | }
|
749 | }
|
750 | },
|
751 |
|
752 | BMP180: {
|
753 | initialize: {
|
754 | value: function(opts, dataHandler) {
|
755 | var Multi = require("./imu");
|
756 | var driver = Multi.Drivers.get(this.board, "BMP180", opts);
|
757 | driver.on("data", function(data) {
|
758 | dataHandler(data.temperature);
|
759 | });
|
760 | }
|
761 | },
|
762 | toCelsius: {
|
763 | value: function(raw) {
|
764 |
|
765 |
|
766 |
|
767 |
|
768 |
|
769 |
|
770 | return toFixed(raw, 1);
|
771 | }
|
772 | }
|
773 | },
|
774 |
|
775 | BMP280: {
|
776 | initialize: {
|
777 | value: function(opts, dataHandler) {
|
778 | var Multi = require("./imu");
|
779 | var driver = Multi.Drivers.get(this.board, "BMP280", opts);
|
780 | driver.on("data", function(data) {
|
781 | dataHandler(data.temperature);
|
782 | });
|
783 | }
|
784 | },
|
785 | toCelsius: {
|
786 | value: function(raw) {
|
787 |
|
788 |
|
789 |
|
790 |
|
791 |
|
792 |
|
793 |
|
794 |
|
795 | return toFixed(raw, 2);
|
796 | }
|
797 | }
|
798 | },
|
799 |
|
800 | BME280: {
|
801 | initialize: {
|
802 | value: function(opts, dataHandler) {
|
803 | var Multi = require("./imu");
|
804 | var driver = Multi.Drivers.get(this.board, "BME280", opts);
|
805 | driver.on("data", function(data) {
|
806 | dataHandler(data.temperature);
|
807 | });
|
808 | }
|
809 | },
|
810 | toCelsius: {
|
811 | value: function(raw) {
|
812 |
|
813 |
|
814 | return toFixed(raw, 2);
|
815 | }
|
816 | }
|
817 | },
|
818 |
|
819 | SI7020: {
|
820 | initialize: {
|
821 | value: function(opts, dataHandler) {
|
822 | var Multi = require("./imu");
|
823 | var driver = Multi.Drivers.get(this.board, "SI7020", opts);
|
824 | driver.on("data", function(data) {
|
825 | dataHandler(data.temperature);
|
826 | });
|
827 | }
|
828 | },
|
829 | toCelsius: {
|
830 | value: function(raw) {
|
831 |
|
832 |
|
833 |
|
834 |
|
835 |
|
836 | return toFixed((175.72 * raw / 65536) - 46.85, 1);
|
837 | }
|
838 | }
|
839 | },
|
840 |
|
841 | MCP9808: {
|
842 | ADDRESSES: {
|
843 | value: [0x18]
|
844 | },
|
845 | initialize: {
|
846 | value: function(opts, dataHandler) {
|
847 | var address = opts.address || this.ADDRESSES[0];
|
848 |
|
849 | opts.address = address;
|
850 |
|
851 | this.io.i2cConfig(opts);
|
852 |
|
853 |
|
854 | this.io.i2cRead(address, 0x05, 2, function(data) {
|
855 |
|
856 |
|
857 | var raw = (data[0] << 8) | data[1];
|
858 |
|
859 |
|
860 | raw = (raw & 0x0FFF) / 16;
|
861 |
|
862 | if (raw & 0x1000) {
|
863 | raw -= 256;
|
864 | }
|
865 | dataHandler(raw);
|
866 | });
|
867 | }
|
868 | },
|
869 | toCelsius: {
|
870 | value: function(raw) {
|
871 |
|
872 |
|
873 |
|
874 |
|
875 |
|
876 | return toFixed(raw, 2);
|
877 | }
|
878 | },
|
879 | },
|
880 |
|
881 | LSM303C: {
|
882 | initialize: {
|
883 | value: function(opts, dataHandler) {
|
884 | var Multi = require("./imu");
|
885 | var driver = Multi.Drivers.get(this.board, "LSM303C", opts);
|
886 | driver.on("data", function(data) {
|
887 | dataHandler(data.temperature);
|
888 | });
|
889 | }
|
890 | },
|
891 | toCelsius: {
|
892 | value: function(raw) {
|
893 |
|
894 | return toFixed((raw / 8) + 25, 1);
|
895 | }
|
896 | }
|
897 | },
|
898 | };
|
899 |
|
900 | Controllers.BMP085 = Controllers.BMP180;
|
901 | Controllers.GY521 = Controllers.MPU6050;
|
902 | Controllers.SI7021 = Controllers.SI7020;
|
903 | Controllers.DHT11_I2C_NANO_BACKPACK = Controllers.DHT_I2C_NANO_BACKPACK;
|
904 | Controllers.DHT21_I2C_NANO_BACKPACK = Controllers.DHT_I2C_NANO_BACKPACK;
|
905 | Controllers.DHT22_I2C_NANO_BACKPACK = Controllers.DHT_I2C_NANO_BACKPACK;
|
906 |
|
907 |
|
908 | var priv = new Map();
|
909 |
|
910 | function Thermometer(opts) {
|
911 |
|
912 | if (!(this instanceof Thermometer)) {
|
913 | return new Thermometer(opts);
|
914 | }
|
915 |
|
916 | var controller = null;
|
917 | var last = null;
|
918 | var raw = null;
|
919 |
|
920 | Board.Component.call(
|
921 | this, opts = Board.Options(opts)
|
922 | );
|
923 |
|
924 |
|
925 | this.aref = opts.aref || this.io.aref || 5;
|
926 |
|
927 | if (opts.controller && typeof opts.controller === "string") {
|
928 | controller = Controllers[opts.controller.toUpperCase()];
|
929 | } else {
|
930 | controller = opts.controller;
|
931 | }
|
932 |
|
933 | if (controller == null) {
|
934 | controller = Controllers.ANALOG;
|
935 | }
|
936 |
|
937 | var state = {
|
938 | enabled: typeof opts.enabled === "undefined" ? true : opts.enabled,
|
939 | intervalId: null,
|
940 | freq: opts.freq || 25,
|
941 | previousFreq: opts.freq || 25,
|
942 | };
|
943 | priv.set(this, state);
|
944 |
|
945 | Board.Controller.call(this, controller, opts);
|
946 |
|
947 | if (!this.toCelsius) {
|
948 | this.toCelsius = opts.toCelsius || function(x) {
|
949 | return x;
|
950 | };
|
951 | }
|
952 |
|
953 |
|
954 | var eventProcessing = function() {
|
955 | if (raw == null) {
|
956 | return;
|
957 | }
|
958 |
|
959 | var data = {};
|
960 | data.C = data.celsius = this.celsius;
|
961 | data.F = data.fahrenheit = this.fahrenheit;
|
962 | data.K = data.kelvin = this.kelvin;
|
963 |
|
964 | this.emit("data", data);
|
965 |
|
966 | if (this.celsius !== last) {
|
967 | last = this.celsius;
|
968 | this.emit("change", data);
|
969 | }
|
970 | }.bind(this);
|
971 |
|
972 | var descriptors = {
|
973 | celsius: {
|
974 | get: function() {
|
975 | return this.toCelsius(raw);
|
976 | }
|
977 | },
|
978 | fahrenheit: {
|
979 | get: function() {
|
980 | return toFixed((this.celsius * 9 / 5) + 32, 2);
|
981 | }
|
982 | },
|
983 | kelvin: {
|
984 | get: function() {
|
985 | return toFixed(this.celsius + CELSIUS_TO_KELVIN, 2);
|
986 | }
|
987 | },
|
988 | freq: {
|
989 | get: function() {
|
990 | return state.freq;
|
991 | },
|
992 | set: function(newFreq) {
|
993 | state.freq = newFreq;
|
994 | if (state.intervalId) {
|
995 | clearInterval(state.intervalId);
|
996 | }
|
997 |
|
998 | if (state.freq !== null) {
|
999 | state.intervalId = setInterval(eventProcessing, newFreq);
|
1000 | }
|
1001 | }
|
1002 | },
|
1003 | };
|
1004 |
|
1005 | descriptors.C = descriptors.celsius;
|
1006 | descriptors.F = descriptors.fahrenheit;
|
1007 | descriptors.K = descriptors.kelvin;
|
1008 |
|
1009 | Object.defineProperties(this, descriptors);
|
1010 |
|
1011 | if (typeof this.initialize === "function") {
|
1012 | this.initialize(opts, function(data) {
|
1013 | raw = data;
|
1014 | });
|
1015 | }
|
1016 |
|
1017 |
|
1018 |
|
1019 | if (state.enabled) {
|
1020 | this.freq = state.freq;
|
1021 | }
|
1022 | }
|
1023 |
|
1024 | util.inherits(Thermometer, Emitter);
|
1025 |
|
1026 |
|
1027 |
|
1028 |
|
1029 |
|
1030 |
|
1031 |
|
1032 | Thermometer.prototype.enable = function() {
|
1033 | var state = priv.get(this);
|
1034 |
|
1035 |
|
1036 | if (!state.enabled) {
|
1037 | this.freq = state.freq || state.previousFreq;
|
1038 | }
|
1039 |
|
1040 | return this;
|
1041 | };
|
1042 |
|
1043 |
|
1044 |
|
1045 |
|
1046 |
|
1047 |
|
1048 |
|
1049 | Thermometer.prototype.disable = function() {
|
1050 | var state = priv.get(this);
|
1051 |
|
1052 |
|
1053 | if (state.enabled) {
|
1054 | state.enabled = false;
|
1055 | state.previousFreq = state.freq;
|
1056 | this.freq = null;
|
1057 | }
|
1058 |
|
1059 | return this;
|
1060 | };
|
1061 |
|
1062 | Thermometer.Drivers = Drivers;
|
1063 |
|
1064 |
|
1065 | if (!!process.env.IS_TEST_MODE) {
|
1066 | Thermometer.Controllers = Controllers;
|
1067 | Thermometer.purge = function() {
|
1068 | priv.clear();
|
1069 | };
|
1070 | }
|
1071 |
|
1072 | module.exports = Thermometer;
|