選択できるのは25トピックまでです。 トピックは、先頭が英数字で、英数字とダッシュ('-')を使用した35文字以内のものにしてください。

ArtcBleUtil.js 8.5KB

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  1. const ArtcDataUtil = require("./ArtcDataUtil.js")
  2. const FUNCTION = "function"
  3. const SERVICE_UUID = "0000FF17-0000-1000-8000-00805F9B34FB"
  4. const WRITE_UUID = "0000FF02-0000-1000-8000-00805F9B34FB"
  5. const READ_UUID = "0000FF03-0000-1000-8000-00805F9B34FB"
  6. var DevResult = function (code, data, msg) {
  7. this.code = code,
  8. this.data = data,
  9. this.msg = msg
  10. }
  11. var _bleDeviceId
  12. var _connectCallback
  13. var _connectCallback_0
  14. /**
  15. * 连接设备
  16. */
  17. var connectDevice = function (device, callback, callback_0) {
  18. _bleDeviceId = device.deviceId
  19. _connectCallback = callback
  20. _connectCallback_0 = callback_0
  21. wx.onBLEConnectionStateChange((res) => {
  22. if (res.deviceId == _bleDeviceId) {
  23. if (res.connected == true) {
  24. deployBle()
  25. } else {
  26. // console.log("连接断开")
  27. typeof _connectCallback_0 == FUNCTION && _connectCallback_0(new DevResult(1, null, "连接断开"))
  28. }
  29. }
  30. })
  31. wx.createBLEConnection({
  32. deviceId: _bleDeviceId,
  33. timeout: 20 * 1000,
  34. success: (res) => {
  35. },
  36. fail: () => {
  37. typeof _connectCallback == FUNCTION && _connectCallback(new DevResult(1001, null, "连接失败"))
  38. },
  39. })
  40. }
  41. /**
  42. * 配置连接外设
  43. */
  44. var deployBle = function () {
  45. wx.getBLEDeviceServices({
  46. deviceId: _bleDeviceId,
  47. success: (res) => {
  48. for (let i = 0; i < res.services.length; i ++) {
  49. if ((res.services[i].uuid + "") == SERVICE_UUID) {
  50. wx.getBLEDeviceCharacteristics({
  51. deviceId: _bleDeviceId,
  52. serviceId: SERVICE_UUID,
  53. success: (res) => {
  54. let haveRead = false;
  55. let haveWrite = false;
  56. for (let j = 0; j < res.characteristics.length; j ++) {
  57. let chr = res.characteristics[j].uuid + ""
  58. if (chr == READ_UUID) {
  59. haveRead = true;
  60. }
  61. else if (chr == WRITE_UUID) {
  62. haveWrite = true;
  63. }
  64. }
  65. if (haveRead == true && haveWrite == true) {
  66. wx.notifyBLECharacteristicValueChange({
  67. deviceId: _bleDeviceId,
  68. serviceId: SERVICE_UUID,
  69. characteristicId: READ_UUID,
  70. state: true,
  71. success: (res) => {
  72. initDevice()
  73. },
  74. fail: () => {
  75. disconnectDevice()
  76. typeof _connectCallback == FUNCTION && _connectCallback(new DevResult(1002, null, "监听数据失败"))
  77. }
  78. })
  79. }else {
  80. disconnectDevice()
  81. typeof _connectCallback == FUNCTION && _connectCallback(new DevResult(1003, null, "必须特征不满足"))
  82. }
  83. },
  84. fail: () => {
  85. disconnectDevice()
  86. typeof _connectCallback == FUNCTION && _connectCallback(new DevResult(1004, null, "读取特征失败"))
  87. }
  88. })
  89. return
  90. }
  91. }
  92. disconnectDevice()
  93. typeof _connectCallback == FUNCTION && _connectCallback(new DevResult(1005, null, "必须服务不满足"))
  94. },
  95. fail: () => {
  96. disconnectDevice()
  97. typeof _connectCallback == FUNCTION && _connectCallback(new DevResult(1006, null, "读取服务失败"))
  98. }
  99. })
  100. wx.onBLECharacteristicValueChange((res) =>{
  101. if (res.deviceId == _bleDeviceId && res.serviceId == SERVICE_UUID && res.characteristicId == READ_UUID) {
  102. let hexData = ArtcDataUtil.buf2hex(res.value)
  103. // console.log("接收:" + hexData)
  104. analyticData(hexData)
  105. }
  106. })
  107. }
  108. /**
  109. * 断开蓝牙连接
  110. */
  111. var disconnectDevice = function (callback) {
  112. wx.closeBLEConnection({
  113. deviceId: _bleDeviceId,
  114. success: (res) => {
  115. typeof callback == FUNCTION && callback(new DevResult(0, null, "连接断开成功"))
  116. },
  117. fail: () => {
  118. typeof callback == FUNCTION && callback(new DevResult(1101, null, "连接断开失败"))
  119. }
  120. })
  121. }
  122. var _sendCallback
  123. var _sendDatas
  124. var _sendIndex = 0
  125. /**
  126. * 发送数据
  127. */
  128. var sendData = function (datas, callback) {
  129. _pakectData = ""
  130. _packetLength = 0
  131. _pakectArray = new Array()
  132. _pakectCount = 0
  133. _sendCallback = callback
  134. _sendDatas = datas
  135. _sendIndex = 0
  136. doSendData()
  137. }
  138. var doSendData = function () {
  139. if (_sendIndex < _sendDatas.length) {
  140. let value = _sendDatas[_sendIndex]
  141. wx.writeBLECharacteristicValue({
  142. deviceId: _bleDeviceId,
  143. serviceId: SERVICE_UUID,
  144. characteristicId: WRITE_UUID,
  145. value: value,
  146. success: (res) => {
  147. // console.log("发送:" + ArtcDataUtil.buf2hex(value))
  148. setTimeout(() => {
  149. _sendIndex++
  150. doSendData()
  151. }, 5)
  152. },
  153. fail: () => {
  154. typeof _sendCallback == FUNCTION && _sendCallback(new DevResult(1201, null, "发送数据失败"))
  155. }
  156. })
  157. }
  158. }
  159. var _pakectData = ""
  160. var _packetLength = 0
  161. var _pakectArray = new Array()
  162. var _pakectCount = 0
  163. /**
  164. * 解析数据
  165. */
  166. var analyticData = function (data) {
  167. if (_pakectData.length == 0) {
  168. if (data.startsWith("50") && data.length >= 8) {
  169. _packetLength = parseInt(data.slice(6, 8), 16) * 2 + 10
  170. } else {
  171. typeof _sendCallback == FUNCTION && _sendCallback(new DevResult(1202, null, "接收数据异常,LEN字段缺失"))
  172. return
  173. }
  174. }
  175. _pakectData += data
  176. if (_pakectData.length < _packetLength) {
  177. return
  178. }
  179. if (_pakectData.length > _packetLength) {
  180. _pakectData = ""
  181. _packetLength = 0
  182. typeof _sendCallback == FUNCTION && _sendCallback(new DevResult(1203, null, "接收数据异常,接收数据超长"))
  183. return
  184. }
  185. if (_pakectData.length == _packetLength) {
  186. if (_pakectArray.length == 0) {
  187. let ctl = parseInt(_pakectData.slice(2, 6), 16)
  188. _pakectCount = ctl - 0x8000
  189. if (_pakectCount <= 0) {
  190. _pakectData = ""
  191. _packetLength = 0
  192. typeof _sendCallback == FUNCTION && _sendCallback(new DevResult(1204, null, "接收数据异常,CTL字段数据异常"))
  193. return
  194. }
  195. }
  196. _pakectArray.push(_pakectData)
  197. _pakectData = ""
  198. _packetLength = 0
  199. if (_pakectArray.length == _pakectCount) {
  200. for (let i = 0; i < _pakectArray.length; i++) {
  201. let bcc = 0
  202. for (let j = 0; j < _pakectArray[i].length - 2; j += 2) {
  203. let bit = parseInt(_pakectArray[i].slice(j, j + 2), 16)
  204. bcc ^= bit
  205. }
  206. if (bcc != parseInt(_pakectArray[i].slice(-2), 16)) {
  207. typeof _sendCallback == FUNCTION && _sendCallback(new DevResult(1205, null, "接收数据异常,BCC校验失败"))
  208. _pakectArray = new Array()
  209. _packetLength = 0
  210. return
  211. }
  212. }
  213. let completeData = ""
  214. for (let i = 0; i < _pakectArray.length; i++) {
  215. if (_pakectArray[i].length >= 10) {
  216. completeData += _pakectArray[i].slice(8, -2)
  217. }
  218. }
  219. _pakectArray = new Array()
  220. _packetLength = 0
  221. typeof _sendCallback == FUNCTION && _sendCallback(new DevResult(0, completeData, "指令发送成功,接收结果成功"))
  222. }
  223. }
  224. }
  225. var initDevice = function() {
  226. sendData(ArtcDataUtil.make80SendData(), (res) => {
  227. if (res.code == 0) {
  228. let data = res.data
  229. if (data.startsWith("9000")) {
  230. typeof _connectCallback == FUNCTION && _connectCallback(new DevResult(0, null, "连接成功,初始化设备成功"))
  231. typeof _connectCallback_0 == FUNCTION && _connectCallback_0(new DevResult(0, null, "连接成功,初始化设备成功"))
  232. } else {
  233. disconnectDevice()
  234. typeof _connectCallback == FUNCTION && _connectCallback(new DevResult(1008, null, "连接成功,初始化设备失败"))
  235. }
  236. } else {
  237. disconnectDevice()
  238. typeof _connectCallback == FUNCTION && _connectCallback(new DevResult(1007, null, "连接成功,初始化设备失败"))
  239. }
  240. })
  241. }
  242. var transCmd = function(cmd, cmdtype, callback) {
  243. let tlv = ArtcDataUtil.makeTLV(cmd)
  244. sendData(ArtcDataUtil.make82SendData(cmdtype, tlv), (res) => {
  245. if (res.code == 0) {
  246. let data = res.data
  247. if (data.length >= 12) {
  248. let tlv = data.slice(10)
  249. let reapdus = ArtcDataUtil.reTLV(tlv)
  250. typeof callback == FUNCTION && callback(new DevResult(0, reapdus, "透传成功"))
  251. }else {
  252. typeof callback == FUNCTION && callback(new DevResult(1206, null, "缺失tlv数据"))
  253. }
  254. }else {
  255. typeof callback == FUNCTION && callback(res)
  256. }
  257. })
  258. }
  259. //接口对象
  260. var ArtcBleUtil = {
  261. connectDevice: connectDevice,
  262. disconnectDevice: disconnectDevice,
  263. transCmd: transCmd,
  264. }
  265. //暴露接口对象
  266. module.exports = ArtcBleUtil