ble_manager.js 19 KB

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  1. // 引入必要的微信小程序 API
  2. // const wx = require('wx');
  3. class bleManager {
  4. constructor() {
  5. this.hasPermission = false;
  6. this.isAvailable = false;
  7. this.scanDevices = [];
  8. this.device = null;
  9. }
  10. // 检查蓝牙权限
  11. async checkBluetoothPermission(callback) {
  12. // return new Promise((resolve, reject) => {
  13. // 获取蓝牙权限
  14. const _app = getApp();
  15. wx.getSetting({
  16. success(res) {
  17. if (res.authSetting["scope.bluetooth"]) {
  18. _app.globalData.scopeBluetooth = true;
  19. this.hasPermission = true;
  20. // console.log('checkBluetoothPermission success, now is', res)
  21. if (callback) {
  22. callback(true);
  23. }
  24. // resolve(true);
  25. } else if (res.authSetting["scope.bluetooth"] === undefined) {
  26. _app.globalData.scopeBluetooth = false;
  27. this.hasPermission = false;
  28. if (callback) {
  29. callback(false);
  30. }
  31. wx.authorize({
  32. scope: "scope.bluetooth",
  33. complete() {
  34. this.checkBluetoothPermission()
  35. // resolve(_this.checkBluetoothPermission());
  36. }
  37. });
  38. } else {
  39. _this.globalData.scopeBluetooth = false;
  40. this.hasPermission = false;
  41. if (callback) {
  42. callback(false);
  43. }
  44. wx.showModal({
  45. title: '请打开系统蓝牙进行配网',
  46. content: '如已打开蓝牙仍然弹框,请尝试重启小程序',
  47. success(res) {
  48. if (res.confirm) {
  49. console.log('用户点击确定')
  50. wx.openSetting({
  51. complete() {
  52. // _this.getBluetoothStatus();
  53. }
  54. })
  55. } else if (res.cancel) {
  56. console.log('用户点击取消')
  57. }
  58. }
  59. })
  60. // resolve(false);
  61. };
  62. }
  63. })
  64. // })
  65. }
  66. // 初始化蓝牙适配器
  67. async initBluetoothAdapter(callback) {
  68. let _this = this
  69. return new Promise((resolve, reject) => {
  70. wx.openBluetoothAdapter({
  71. success: (res) => {
  72. _this.isAvailable = true;
  73. // console.log('adapterState success, now is', res)
  74. if (callback) {
  75. callback(true);
  76. }
  77. resolve(true);
  78. },
  79. fail: (err) => {
  80. _this.isAvailable = false;
  81. console.log('adapterState fail, now is', err)
  82. if (callback) {
  83. callback(false);
  84. }
  85. reject(false);
  86. }
  87. });
  88. wx.onBluetoothAdapterStateChange(function (res) {
  89. console.log('adapterState changed, now is', res)
  90. if (callback) {
  91. callback(res.available ?? false);
  92. }
  93. _this.isAvailable = res.available ?? false
  94. })
  95. });
  96. }
  97. closeBle() {
  98. console.log('关闭蓝牙了')
  99. wx.closeBluetoothAdapter()
  100. }
  101. // 获取已连接的蓝牙设备
  102. getConnectedDevices() {
  103. if (!this.isAvailable && !this.hasPermission) {
  104. return [];
  105. }
  106. return new Promise((resolve, reject) => {
  107. wx.getConnectedBluetoothDevices({
  108. // services: ["FFC0", "ffc0", "FFC1", "FFC2", "ffc1", "ffc2", "AB00", "ab00", "AB01", "AB02", "FFF1", "fff1", "FFE2", "FFE5",],
  109. services: ["ab00", "ffe5", "1111", "FFC0", "FFC1", "FFF1",],
  110. // services: [],
  111. // services: [
  112. // "0000ab00-0000-1000-8000-00805f9b34fb",
  113. // "0000ffc0-0000-1000-8000-00805f9b34fb",
  114. // "0000FFF0-0000-1000-8000-00805F9B34FB",
  115. // "0000FFF1-0000-1000-8000-00805F9B34FB",
  116. // "0000FFE5-0000-1000-8000-00805F9B34FB",
  117. // ],
  118. success: (res) => {
  119. let newDevices = this.fiterDevice(res)
  120. console.log('已连接的蓝牙设备:', newDevices);
  121. resolve(newDevices);
  122. },
  123. fail: (err) => {
  124. console.error('获取已连接的蓝牙设备失败:', err);
  125. reject([]);
  126. }
  127. });
  128. });
  129. }
  130. // 获取获取在蓝牙模块生效期间所有搜索到的蓝牙设备。包括已经和本机处于连接状态的设备。
  131. getAllConnectedDevices() {
  132. if (!this.isAvailable && !this.hasPermission) {
  133. return [];
  134. }
  135. return new Promise((resolve, reject) => {
  136. wx.getBluetoothDevices({
  137. success: (res) => {
  138. // const connectedDevices = res.devices.map(device => ({
  139. // deviceId: device.deviceId,
  140. // name: device.name || device.localName
  141. // }));
  142. let newDevices = this.fiterDevice(res)
  143. resolve(newDevices);
  144. },
  145. fail: (err) => {
  146. console.error('已扫描过的蓝牙设备失败:', err);
  147. reject([]);
  148. }
  149. });
  150. });
  151. }
  152. // 断开与指定设备的连接
  153. disconnect(deviceId) {
  154. return new Promise((resolve, reject) => {
  155. wx.closeBLEConnection({
  156. deviceId: deviceId,
  157. success: (res) => {
  158. this.device = null;
  159. console.log('断开连接成功:', res);
  160. resolve(res);
  161. },
  162. fail: (err) => {
  163. console.error('断开连接失败:', err);
  164. reject(new Error('断开连接失败'));
  165. }
  166. });
  167. });
  168. }
  169. // 发送数据到指定设备
  170. async sendData(data) {
  171. return new Promise((resolve, reject) => {
  172. var buffer = null;
  173. if (Buffer.isBuffer(data)) {
  174. buffer = data;
  175. } else {
  176. const buffer = new ArrayBuffer(data.length);
  177. const view = new Uint8Array(buffer);
  178. for (let i = 0; i < data.length; i++) {
  179. view[i] = data[i].toString(16);
  180. }
  181. }
  182. console.log('开始发送数据:', view);
  183. wx.writeBLECharacteristicValue({
  184. deviceId: this.device.deviceId,
  185. serviceId: this.device.serviceId,
  186. characteristicId: this.device.characteristicId,
  187. value: buffer,
  188. success: (res) => {
  189. // console.log('数据发送成功:');
  190. resolve(res);
  191. },
  192. fail: (err) => {
  193. console.error('数据发送失败:', err);
  194. reject(new Error('数据发送失败'));
  195. }
  196. });
  197. });
  198. }
  199. async getSetting() {
  200. const _this = this;
  201. return new Promise((resolve, reject) => {
  202. wx.getSetting({
  203. success(res) {
  204. if (res.authSetting["scope.userFuzzyLocation"]) {
  205. // 成功
  206. // _this.getBluetoothStatus();
  207. console.log("有定位权限")
  208. resolve(true);
  209. } else if (res.authSetting["scope.userFuzzyLocation"] === undefined) {
  210. wx.authorize({
  211. scope: "scope.userFuzzyLocation",
  212. success() {
  213. console.log("再次获取定位权限")
  214. resolve(_this.getSetting());
  215. }
  216. });
  217. } else {
  218. wx.showModal({
  219. title: '请打开系统位置获取定位权限',
  220. success(res) {
  221. if (res.confirm) {
  222. console.log('用户点击确定')
  223. wx.openSetting({
  224. complete() {
  225. // _this.getSetting();
  226. // resolve(_this.getSetting());
  227. }
  228. })
  229. } else if (res.cancel) {
  230. console.log('用户点击取消');
  231. }
  232. }
  233. })
  234. console.log("没有有定位权限")
  235. reject(false);
  236. }
  237. }
  238. })
  239. });
  240. }
  241. // 开始搜索蓝牙设备
  242. async startScan(success, fail) {
  243. let open = await this.getSetting()
  244. if (!open) {
  245. if (fail) {
  246. fail("需要先开启定位");
  247. }
  248. console.log('需要先开启定位');
  249. }
  250. if (!this.isAvailable && !this.hasPermission) {
  251. return false;
  252. }
  253. wx.startBluetoothDevicesDiscovery({
  254. // services: ["ffc0", "ab00", "ffe5"],
  255. success: (res) => {
  256. // this.onBluetoothDeviceFound();
  257. console.log('蓝牙设备搜索已启动:', res);
  258. if (success) {
  259. success(res);
  260. }
  261. // resolve(res);
  262. },
  263. fail: (err) => {
  264. if (fail) {
  265. if (err.errno == 1509008) {
  266. wx.showToast({
  267. title: '搜索蓝牙需要先开启定位权限',
  268. icon: 'none',
  269. duration: 2000
  270. })
  271. }
  272. fail(err);
  273. }
  274. console.log('启动蓝牙设备搜索失败', err ?? "err is null");
  275. // reject(new Error('启动蓝牙设备搜索失败', err ?? "err is null"));
  276. }
  277. });
  278. }
  279. // 监听发现新设备的事件
  280. onBluetoothDeviceFound(callback) {
  281. wx.onBluetoothDeviceFound((res) => {
  282. let newDevices = this.fiterDevice(res)
  283. // this.devices.push(...devices);
  284. if (newDevices.length > 0) {
  285. // console.log('发现设备1:', res);
  286. }
  287. if (callback) {
  288. callback(newDevices);
  289. }
  290. });
  291. }
  292. getMac() {
  293. }
  294. ab2hex(buffer) {
  295. var hexArr = Array.prototype.map.call(
  296. new Uint8Array(buffer),
  297. function (bit) {
  298. return ('00' + bit.toString(16)).slice(-2)
  299. }
  300. )
  301. return hexArr.join(':');
  302. }
  303. fiterDevice(res) {
  304. var devices = res.devices.filter(device => {
  305. const name = device.name || '';
  306. const localName = device.localName || '';
  307. let isNot = this.isNotEmpty(name) || this.isNotEmpty(localName);
  308. if (isNot) {
  309. // console.log('是猫王设备名称:', device.advertisData, device.serviceData)
  310. let mac = this.ab2hex(device.advertisData)
  311. // console.log(mac)
  312. device.mac = mac
  313. }
  314. return isNot
  315. });
  316. let newDevices = devices.map((device) => {
  317. let uuid = device.advertisServiceUUIDs[0] ?? ""
  318. return {
  319. deviceId: device.deviceId,
  320. name: device.name,
  321. localName: device.localName,
  322. uuid: uuid,
  323. mac: device.mac,
  324. connectable: device.connectable
  325. }
  326. });
  327. return newDevices
  328. }
  329. isNotEmpty(name) {
  330. let isNot = (name !== ''
  331. && (name.startsWith("MW_") ||
  332. name.startsWith("MW-") ||
  333. name.startsWith("猫王") ||
  334. name.startsWith("妙播") ||
  335. name.startsWith("AirSmart") ||
  336. name === "le")
  337. )
  338. // if (!isNot && name !== '') {
  339. // console.log('不是猫王设备名称:', name)
  340. // }
  341. return isNot;
  342. }
  343. // 连接到指定设备
  344. async connectToDevice(device) {
  345. return new Promise((resolve, reject) => {
  346. console.log("开始连接蓝牙:", device.deviceId)
  347. wx.createBLEConnection({
  348. deviceId: device.deviceId,
  349. success: (res) => {
  350. this.device = device
  351. console.log('连接成功:', res);
  352. resolve(true);
  353. },
  354. fail: (err) => {
  355. this.device = null
  356. console.error('连接失败:', err);
  357. reject(false);
  358. }
  359. });
  360. });
  361. }
  362. // 停止搜索
  363. stopScan() {
  364. return new Promise((resolve, reject) => {
  365. wx.stopBluetoothDevicesDiscovery({
  366. success: (res) => {
  367. console.log('停止搜索成功:', res);
  368. resolve(res);
  369. },
  370. fail: (err) => {
  371. console.error('停止搜索失败:', err);
  372. reject(new Error('停止搜索失败'));
  373. }
  374. });
  375. });
  376. }
  377. closeBle() {
  378. wx.closeBluetoothAdapter({
  379. success(res) {
  380. console.log(res)
  381. }
  382. })
  383. }
  384. // 发现服务
  385. discoverServices(deviceId) {
  386. console.log('发现服务:', deviceId);
  387. return new Promise((resolve, reject) => {
  388. wx.getBLEDeviceServices({
  389. deviceId: deviceId,
  390. success: (res) => {
  391. // this.device.services = res.services;
  392. let service_id = "";
  393. for (let i = 0; i < res.services.length; i++) {
  394. if (res.services[i].uuid.toUpperCase().indexOf("AB00") != -1
  395. || res.services[i].uuid.toUpperCase().indexOf("FFC0") != -1
  396. || res.services[i].uuid.toUpperCase().indexOf("ae800") != -1
  397. ) {
  398. service_id = res.services[i].uuid;
  399. break;
  400. }
  401. console.log('发现服务1:', service_id);
  402. service_id = res.services[i].uuid;
  403. }
  404. this.device.serviceId = service_id;
  405. console.log('发现服务2:', service_id);
  406. resolve(service_id);
  407. // resolve(res.services);
  408. },
  409. fail: (err) => {
  410. this.device.serviceId = null;
  411. console.error('发现服务失败:', err);
  412. reject([]);
  413. }
  414. });
  415. });
  416. }
  417. // 发现特征值 read / write
  418. discoverCharacteristics(deviceId, serviceId) {
  419. console.log('发现特征值:' + deviceId + " , " + serviceId);
  420. // if (deviceId !== this.device.deviceId) {
  421. // console.log('设备id不匹配')
  422. // return false
  423. // }
  424. return new Promise((resolve, reject) => {
  425. wx.getBLEDeviceCharacteristics({
  426. deviceId: deviceId,
  427. serviceId: serviceId,
  428. success: (res) => {
  429. // this.characteristics[serviceId] = res.characteristics;
  430. console.log('发现特征值2:', res);
  431. // this.device.characteristics = res.characteristics;
  432. resolve(res.characteristics);
  433. },
  434. fail: (err) => {
  435. this.device.characteristics = null;
  436. console.error('发现特征值失败:', err);
  437. reject("");
  438. }
  439. });
  440. });
  441. }
  442. // 读取特征值
  443. readCharacteristicValue(characteristicId) {
  444. console.log('开始读取特征值', characteristicId)
  445. return new Promise((resolve, reject) => {
  446. wx.readBLECharacteristicValue({
  447. deviceId: this.device.deviceId,
  448. serviceId: this.device.serviceId,
  449. characteristicId: characteristicId,
  450. success: (res) => {
  451. const name = this.parseBLEValue(res.value); // 解析读取到的值
  452. console.log('读取特征值成功:', name, res);
  453. resolve(res);
  454. },
  455. fail: (err) => {
  456. console.error('读取特征值失败:', err);
  457. reject("");
  458. }
  459. });
  460. });
  461. }
  462. // 解析读取到的设备名称
  463. parseBLEValue(buffer) {
  464. return String.fromCharCode.apply(null, new Uint8Array(buffer));
  465. }
  466. // 监听特征值变化
  467. notifyCharacteristicValueChange(characteristicId, callback) {
  468. console.log('监听特征值变化:', characteristicId, this.device.deviceId, this.device.serviceId);
  469. wx.notifyBLECharacteristicValueChange({
  470. deviceId: this.device.deviceId, //设备mac IOS和安卓系统不一样
  471. serviceId: this.device.serviceId, //服务通道,这里主要是notify
  472. characteristicId: characteristicId, //notify uuid
  473. state: true,
  474. success: function (res) {
  475. console.log("开启notify 成功")
  476. //TODO onBLECharacteristicValueChange 监听特征值 设备的数据在这里获取到
  477. wx.onBLECharacteristicValueChange(function (characteristic) {
  478. let buffer = characteristic.value
  479. let dataView = new DataView(buffer)
  480. let dataResult = []
  481. for (let i = 0; i < dataView.byteLength; i++) {
  482. // console.log("0x" + dataView.getUint8(i).toString(16))
  483. // dataResult.push("0x" + dataView.getUint8(i).toString(16))
  484. dataResult.push(dataView.getUint8(i))
  485. }
  486. const result = dataResult
  487. console.log("拿到的数据:", result)
  488. if (callback) {
  489. callback(result)
  490. }
  491. })
  492. },
  493. fail: function (res) {
  494. console.log("订阅特征失败:", res)
  495. }
  496. })
  497. }
  498. setWrite(wirte, characteristicId) {
  499. console.log('写入特征值:', characteristicId)
  500. // this.device.wirte = wirte
  501. this.device.characteristicId = characteristicId;
  502. }
  503. }
  504. // const ble = new bleManager();
  505. // 导出 bleManager 类
  506. module.exports = bleManager;