├── pages
    ├── index
    │   ├── index.json
    │   ├── index.wxss
    │   ├── index.wxml
    │   └── index.js
    └── logs
    │   ├── logs.json
    │   ├── logs.wxss
    │   ├── logs.wxml
    │   └── logs.js
├── img
    ├── screen1.PNG
    └── screen2.jpg
├── sitemap.json
├── app.wxss
├── .idea
    ├── modules.xml
    ├── bluetoothprinter.iml
    └── workspace.xml
├── app.json
├── utils
    └── util.js
├── app.js
├── README.md
├── project.config.json
├── printer
    ├── printerutil.js
    ├── printerjobs.js
    └── commands.js
└── miniprogram_npm
    └── text-encoding
        └── index.js.map


/pages/index/index.json:
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1 | {
2 |   "navigationBarTitleText": "蓝牙打印"
3 | }


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/pages/logs/logs.json:
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1 | {
2 |   "navigationBarTitleText": "查看启动日志"
3 | }


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/img/screen1.PNG:
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https://raw.githubusercontent.com/lilien1010/wechat-miniprogram-bluetooth-ble-scanner/HEAD/img/screen1.PNG


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/img/screen2.jpg:
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https://raw.githubusercontent.com/lilien1010/wechat-miniprogram-bluetooth-ble-scanner/HEAD/img/screen2.jpg


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/pages/logs/logs.wxss:
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1 | .log-list {
2 |   display: flex;
3 |   flex-direction: column;
4 |   padding: 40rpx;
5 | }
6 | .log-item {
7 |   margin: 10rpx;
8 | }
9 | 


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/sitemap.json:
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1 | {
2 |     "desc": "关于本文件的更多信息，请参考文档 https://developers.weixin.qq.com/miniprogram/dev/framework/sitemap.html",
3 |     "rules": [{
4 |     "action": "allow",
5 |     "page": "*"
6 |     }]
7 | }


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/pages/logs/logs.wxml:
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1 | <!--logs.wxml-->
2 | <view class="container log-list">
3 |   <block wx:for="{{logs}}" wx:for-item="log">
4 |     <text class="log-item">{{index + 1}}. {{log}}</text>
5 |   </block>
6 | </view>
7 | 


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/app.wxss:
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 1 | /**app.wxss**/
 2 | page {
 3 |   background-color: #F8F8F8;
 4 |   height: 100%;
 5 | }
 6 | 
 7 | .container {
 8 |   min-height: 100%;
 9 |   display: flex;
10 |   flex-direction: column;
11 |   align-items: center;
12 | }


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/.idea/modules.xml:
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1 | <?xml version="1.0" encoding="UTF-8"?>
2 | <project version="4">
3 |   <component name="ProjectModuleManager">
4 |     <modules>
5 |       <module fileurl="file://$PROJECT_DIR$/.idea/bluetoothprinter.iml" filepath="$PROJECT_DIR$/.idea/bluetoothprinter.iml" />
6 |     </modules>
7 |   </component>
8 | </project>


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/pages/logs/logs.js:
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 1 | //logs.js
 2 | const util = require('../../utils/util.js')
 3 | 
 4 | Page({
 5 |   data: {
 6 |     logs: []
 7 |   },
 8 |   onLoad: function () {
 9 |     this.setData({
10 |       logs: (wx.getStorageSync('logs') || []).map(log => {
11 |         return util.formatTime(new Date(log))
12 |       })
13 |     })
14 |   }
15 | })
16 | 


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/app.json:
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 1 | {
 2 |     "pages": [
 3 |         "pages/index/index",
 4 |         "pages/logs/logs"
 5 |     ],
 6 |     "window": {
 7 |         "backgroundTextStyle": "light",
 8 |         "navigationBarBackgroundColor": "#fff",
 9 |         "navigationBarTitleText": "WeChat",
10 |         "navigationBarTextStyle": "black"
11 |     },
12 |     "sitemapLocation": "sitemap.json"
13 | }


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/.idea/bluetoothprinter.iml:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="UTF-8"?>
 2 | <module type="WEB_MODULE" version="4">
 3 |   <component name="NewModuleRootManager">
 4 |     <content url="file://$MODULE_DIR$">
 5 |       <excludeFolder url="file://$MODULE_DIR$/.tmp" />
 6 |       <excludeFolder url="file://$MODULE_DIR$/temp" />
 7 |       <excludeFolder url="file://$MODULE_DIR$/tmp" />
 8 |     </content>
 9 |     <orderEntry type="inheritedJdk" />
10 |     <orderEntry type="sourceFolder" forTests="false" />
11 |   </component>
12 | </module>


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/utils/util.js:
--------------------------------------------------------------------------------
 1 | const formatTime = date => {
 2 |   const year = date.getFullYear()
 3 |   const month = date.getMonth() + 1
 4 |   const day = date.getDate()
 5 |   const hour = date.getHours()
 6 |   const minute = date.getMinutes()
 7 |   const second = date.getSeconds()
 8 | 
 9 |   return [year, month, day].map(formatNumber).join('/') + ' ' + [hour, minute, second].map(formatNumber).join(':')
10 | }
11 | 
12 | const formatNumber = n => {
13 |   n = n.toString()
14 |   return n[1] ? n : '0' + n
15 | }
16 | 
17 | module.exports = {
18 |   formatTime: formatTime
19 | }
20 | 


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/pages/index/index.wxss:
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 1 | .page-section {
 2 |   display: flex;
 3 |   flex-direction: column;
 4 |   align-items: center;
 5 |   width: 100%;
 6 |   box-sizing: border-box;
 7 |   border-bottom: 2rpx solid #EEE;
 8 |   padding: 30rpx 0;
 9 | }
10 | 
11 | .devices-summary {
12 |   padding: 10rpx;
13 |   font-size: 30rpx;
14 | }
15 | 
16 | .device-list {
17 |   height: 700rpx;
18 | }
19 | 
20 | .device-item {
21 |   border-bottom: 1rpx solid #EEE;
22 |   padding: 10rpx;
23 |   color: #666;
24 | }
25 | 
26 | .device-item-hover {
27 |   background-color: rgba(0, 0, 0, .1);
28 | }
29 | 
30 | .btn-area {
31 |   box-sizing: border-box;
32 |   width: 100%;
33 |   padding: 0 30rpx;
34 |   margin: 30rpx 0;
35 | }
36 | 
37 | .connected-area {
38 |   font-size: 22rpx;
39 | }
40 | 
41 | .connected-info {}
42 | 
43 | .input-area {
44 |   background: #fff;
45 |   margin-top: 10rpx;
46 |   width: 100%;
47 | }
48 | 
49 | .input {
50 |   font-size: 28rpx;
51 |   height: 2.58823529em;
52 |   min-height: 2.58823529em;
53 |   line-height: 2.58823529em;
54 |   padding: 10rpx;
55 | }


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/app.js:
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 1 | //app.js
 2 | App({
 3 |   onLaunch: function () {
 4 |     // 展示本地存储能力
 5 |     var logs = wx.getStorageSync('logs') || []
 6 |     logs.unshift(Date.now())
 7 |     wx.setStorageSync('logs', logs)
 8 | 
 9 |     // 登录
10 |     wx.login({
11 |       success: res => {
12 |         // 发送 res.code 到后台换取 openId, sessionKey, unionId
13 |       }
14 |     })
15 |     // 获取用户信息
16 |     wx.getSetting({
17 |       success: res => {
18 |         if (res.authSetting['scope.userInfo']) {
19 |           // 已经授权，可以直接调用 getUserInfo 获取头像昵称，不会弹框
20 |           wx.getUserInfo({
21 |             success: res => {
22 |               // 可以将 res 发送给后台解码出 unionId
23 |               this.globalData.userInfo = res.userInfo
24 | 
25 |               // 由于 getUserInfo 是网络请求，可能会在 Page.onLoad 之后才返回
26 |               // 所以此处加入 callback 以防止这种情况
27 |               if (this.userInfoReadyCallback) {
28 |                 this.userInfoReadyCallback(res)
29 |               }
30 |             }
31 |           })
32 |         }
33 |       }
34 |     })
35 |   },
36 |   globalData: {
37 |     userInfo: null
38 |   }
39 | })


--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
 1 | ## 小程序蓝牙扫码枪实例
 2 | 微信小程序蓝牙打印示例，代码参考[微信小程序示例](https://github.com/benioZhang/miniprogram-bluetoothprinter/)。官方Demo总比网上随便找的强吧。
 3 | 
 4 | * 测试扫码枪：[维融（weirong）LP1无线红光蓝牙扫描器 一维 蓝牙 1100mAh](https://u.jd.com/ZtHT8dm)
 5 | * 测试设备：iPhone 11 Pro Max
 6 | * 扫码枪设备必须支持 ：BLE模式 （无论安卓 还是 iOS 打开扫码枪之后都要进入 BLE模式）
 7 | 
 8 | ### 效果图
 9 | <div>
10 |     <img src="img/screen1.PNG" width="400"><img src="img/screen2.jpg" width="400">
11 | </div>
12 | 
13 | ### 流程
14 | * 初始化蓝牙模块 `wx.openBluetoothAdapter()`
15 | * 搜寻附近的蓝牙外围设备 `wx.startBluetoothDevicesDiscovery()`
16 | * 监听寻找到新设备的事件 `wx.onBluetoothDeviceFound()`
17 | * 连接低功耗蓝牙设备 `wx.createBLEConnection()`
18 | * 获取蓝牙设备服务 `wx.getBLEDeviceServices()`
19 | * 获取蓝牙设备服务的特征值 `wx.getBLEDeviceCharacteristics()`
20 | * 对支持notify 和 indicate的特征执行 `wx.notifyBLECharacteristicValueChange()` 和 `wx.onBLECharacteristicValueChange()`
21 | * 关闭蓝牙模块 `wx.closeBluetoothAdapter()`
22 | 
23 | ### 注意点
24 | **1.与蓝牙设备通信很重要的就是找到对应的Characteristic。如何找到这个Characteristic？**  
25 | 目前只能一个个去试！！！如果有更好的做法请告诉我。
26 | 
27 | 
28 | 连接成功之后，在程序的任何地方,做如下监听，都可以实现读取条码
29 | ```
30 | function ab2str(buf) {
31 |   return String.fromCharCode.apply(null, new Uint8Array(buf));
32 | }
33 | 
34 | 
35 | wx.onBLECharacteristicValueChange((result) => { 
36 |     console.log('监听特征值变化',result); 
37 |     const barcode = ab2str(result.value);
38 |     that.setData({barcode}) 
39 | })
40 | ```
41 | 
42 | ### 参考
43 | * [微信小程序API](https://developers.weixin.qq.com/miniprogram/dev/api/)
44 | * [微信小程序示例](https://github.com/wechat-miniprogram/miniprogram-demo)
45 | * [低功耗蓝牙能力](https://developers.weixin.qq.com/community/develop/doc/0008acd004ccd86b37d649ee55b009?highLine=%25E8%2593%259D%25E7%2589%2599)
46 | * [微信小程序 - 蓝牙接口](https://www.jianshu.com/p/d01dbca67461)
47 | * [ESC(POS)打印控制命令](http://www.xmjjdz.com/downloads/manual/cn/ESC(POS)%E6%89%93%E5%8D%B0%E6%8E%A7%E5%88%B6%E5%91%BD%E4%BB%A4.pdf)
48 | * [ESCPOS](https://github.com/song940/node-escpos)
49 | 


--------------------------------------------------------------------------------
/project.config.json:
--------------------------------------------------------------------------------
 1 | {
 2 |     "description": "项目配置文件",
 3 |     "packOptions": {
 4 |         "ignore": []
 5 |     },
 6 |     "setting": {
 7 |         "urlCheck": true,
 8 |         "es6": true,
 9 |         "enhance": true,
10 |         "postcss": true,
11 |         "preloadBackgroundData": false,
12 |         "minified": true,
13 |         "newFeature": true,
14 |         "coverView": true,
15 |         "nodeModules": true,
16 |         "autoAudits": false,
17 |         "showShadowRootInWxmlPanel": true,
18 |         "scopeDataCheck": false,
19 |         "uglifyFileName": false,
20 |         "checkInvalidKey": true,
21 |         "checkSiteMap": true,
22 |         "uploadWithSourceMap": true,
23 |         "compileHotReLoad": false,
24 |         "lazyloadPlaceholderEnable": false,
25 |         "useMultiFrameRuntime": true,
26 |         "useApiHook": true,
27 |         "useApiHostProcess": true,
28 |         "babelSetting": {
29 |             "ignore": [],
30 |             "disablePlugins": [],
31 |             "outputPath": ""
32 |         },
33 |         "useIsolateContext": false,
34 |         "userConfirmedBundleSwitch": false,
35 |         "packNpmManually": false,
36 |         "packNpmRelationList": [],
37 |         "minifyWXSS": true,
38 |         "disableUseStrict": false,
39 |         "minifyWXML": true,
40 |         "showES6CompileOption": false,
41 |         "useCompilerPlugins": false,
42 |         "ignoreUploadUnusedFiles": true
43 |     },
44 |     "compileType": "miniprogram",
45 |     "libVersion": "2.4.0",
46 |     "appid": "wxbaa5f6ae19c82ce0",
47 |     "projectname": "miniprogram-bluetoothprinter",
48 |     "debugOptions": {
49 |         "hidedInDevtools": []
50 |     },
51 |     "isGameTourist": false,
52 |     "condition": {
53 |         "search": {
54 |             "list": []
55 |         },
56 |         "conversation": {
57 |             "list": []
58 |         },
59 |         "game": {
60 |             "currentL": -1,
61 |             "list": []
62 |         },
63 |         "miniprogram": {
64 |             "list": []
65 |         }
66 |     }
67 | }


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/printer/printerutil.js:
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 1 | // 打印机纸宽58mm，页的宽度384，字符宽度为1，每行最多盛放32个字符
 2 | const PAGE_WIDTH = 384;
 3 | const MAX_CHAR_COUNT_EACH_LINE = 32;
 4 | 
 5 | /**
 6 |  * @param str
 7 |  * @returns {boolean} str是否全是中文
 8 |  */
 9 | function isChinese(str) {
10 |   return /^[\u4e00-\u9fa5]$/.test(str);
11 | }
12 | 
13 | /**
14 |  * 返回字符串宽度(1个中文=2个英文字符)
15 |  * @param str
16 |  * @returns {number}
17 |  */
18 | function getStringWidth(str) {
19 |   let width = 0;
20 |   for (let i = 0, len = str.length; i < len; i++) {
21 |     width += isChinese(str.charAt(i)) ? 2 : 1;
22 |   }
23 |   return width;
24 | }
25 | 
26 | /**
27 |  * 同一行输出str1, str2，str1居左, str2居右
28 |  * @param {string} str1 内容1
29 |  * @param {string} str2 内容2
30 |  * @param {number} fontWidth 字符宽度 1/2
31 |  * @param {string} fillWith str1 str2之间的填充字符
32 |  *
33 |  */
34 | function inline(str1, str2, fillWith = ' ', fontWidth = 1) {
35 |   const lineWidth = MAX_CHAR_COUNT_EACH_LINE / fontWidth;
36 |   // 需要填充的字符数量
37 |   let fillCount = lineWidth - (getStringWidth(str1) + getStringWidth(str2)) % lineWidth;
38 |   let fillStr = new Array(fillCount).fill(fillWith.charAt(0)).join('');
39 |   return str1 + fillStr + str2;
40 | }
41 | 
42 | /**
43 |  * 用字符填充一整行
44 |  * @param {string} fillWith 填充字符
45 |  * @param {number} fontWidth 字符宽度 1/2
46 |  */
47 | function fillLine(fillWith = '-', fontWidth = 1) {
48 |   const lineWidth = MAX_CHAR_COUNT_EACH_LINE / fontWidth;
49 |   return new Array(lineWidth).fill(fillWith.charAt(0)).join('');
50 | }
51 | 
52 | /**
53 |  * 文字内容居中，左右用字符填充
54 |  * @param {string} str 文字内容
55 |  * @param {number} fontWidth 字符宽度 1/2
56 |  * @param {string} fillWith str1 str2之间的填充字符
57 |  */
58 | function fillAround(str, fillWith = '-', fontWidth = 1) {
59 |   const lineWidth = MAX_CHAR_COUNT_EACH_LINE / fontWidth;
60 |   let strWidth = getStringWidth(str);
61 |   // 内容已经超过一行了，没必要填充
62 |   if (strWidth >= lineWidth) {
63 |     return str;
64 |   }
65 |   // 需要填充的字符数量
66 |   let fillCount = lineWidth - strWidth;
67 |   // 左侧填充的字符数量
68 |   let leftCount = Math.round(fillCount / 2);
69 |   // 两侧的填充字符，需要考虑左边需要填充，右边不需要填充的情况
70 |   let fillStr = new Array(leftCount).fill(fillWith.charAt(0)).join('');
71 |   return fillStr + str + fillStr.substr(0, fillCount - leftCount);
72 | }
73 | 
74 | module.exports = {
75 |   inline: inline,
76 |   fillLine: fillLine,
77 |   fillAround: fillAround,
78 | };


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/pages/index/index.wxml:
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 1 | <wxs module="utils">
 2 |   module.exports.max = function(n1, n2) {
 3 |   return Math.max(n1, n2)
 4 |   }
 5 |   module.exports.len = function(arr) {
 6 |   arr = arr || [];
 7 |   return arr.length;
 8 |   }
 9 | </wxs>
10 | <view class="container">
11 |   <view class="page-section">
12 | 
13 |     <view wx:for="{{barcode}}" wx:key="index" >
14 |         <view style="font-size: 16px; color: #333;">条码：{{item}}</view>
15 |       </view>
16 | 
17 |     <view class="devices-summary">已发现 {{devices.length}} 个外围设备：</view>
18 |     <scroll-view class="device-list" scroll-y scroll-with-animation>
19 |       <view wx:for="{{devices}}" wx:key="index" data-device-id="{{item.deviceId}}" data-name="{{item.name || item.localName}}" bindtap="createBLEConnection" class="device-item" hover-class="device-item-hover">
20 |         <view style="font-size: 16px; color: #333;">{{item.name}}</view>
21 |         <view style="font-size: 10px">信号强度: {{item.RSSI}}dBm ({{utils.max(0, item.RSSI + 100)}}%)</view>
22 |         <view style="font-size: 10px">UUID: {{item.deviceId}}</view>
23 |         <view style="font-size: 10px">Service数量: {{utils.len(item.advertisServiceUUIDs)}}</view>
24 |       </view>
25 |     </scroll-view>
26 |     <view class="btn-area">
27 |       <button type="primary" bindtap="openBluetoothAdapter">开始扫描</button>
28 |       <button bindtap="stopBluetoothDevicesDiscovery" style="margin-top: 10px;">停止扫描</button>
29 |     </view>
30 |   </view>
31 |   <view class="page-section connected-area" wx:if="{{lastDevice}}">
32 |     <text style="font-size: 30rpx">最近连接的设备</text>
33 |     <view>{{lastDevice}}</view>
34 |     <view class="btn-area">
35 |       <button type="primary" bindtap="createBLEConnectionWithDeviceId">直接连接</button>
36 |     </view>
37 |   </view>
38 |   <view class="page-section connected-area" wx:if="{{connected}}">
39 |     <view class="connected-info">
40 |       <text style="font-size: 30rpx">已连接到 {{name}}</text>
41 |       <view wx:for="{{chs}}" wx:key="index">
42 |         <view>特性UUID: {{item.uuid}}</view>
43 |         <view>特性值: {{item.value}}</view>
44 |       </view>
45 |     </view>
46 |     <view class="btn-area">
47 |       <button wx:if="{{canWrite}}" type="primary" bindtap="writeBLECharacteristicValue" style="margin-bottom: 10px;">
48 |         写数据
49 |       </button>
50 |       <button bindtap="closeBLEConnection">断开连接</button>
51 |     </view>
52 |   </view>
53 | </view>


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/printer/printerjobs.js:
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  1 | const commands = require('commands');
  2 | const TextEncoder = require('text-encoding/index').TextEncoder;
  3 | 
  4 | const printerJobs = function () {
  5 |   this._queue = Array.from(commands.HARDWARE.HW_INIT);
  6 |   this._encoder = new TextEncoder("gb2312", {NONSTANDARD_allowLegacyEncoding: true});
  7 |   this._enqueue = function (cmd) {
  8 |     this._queue.push.apply(this._queue, cmd);
  9 |   }
 10 | };
 11 | 
 12 | /**
 13 |  * 增加打印内容
 14 |  * @param  {string} content  文字内容
 15 |  */
 16 | printerJobs.prototype.text = function (content) {
 17 |   if (content) {
 18 |     let uint8Array = this._encoder.encode(content);
 19 |     let encoded = Array.from(uint8Array);
 20 |     this._enqueue(encoded);
 21 |   }
 22 |   return this;
 23 | };
 24 | 
 25 | /**
 26 |  * 打印文字
 27 |  * @param  {string} content  文字内容
 28 |  */
 29 | printerJobs.prototype.print = function (content) {
 30 |   this.text(content);
 31 |   this._enqueue(commands.LF);
 32 |   return this;
 33 | };
 34 | 
 35 | /**
 36 |  * 打印文字并换行
 37 |  * @param  {string}  content  文字内容
 38 |  */
 39 | printerJobs.prototype.println = function (content = '') {
 40 |   return this.print(content + commands.EOL);
 41 | };
 42 | 
 43 | /**
 44 |  * 设置对齐方式
 45 |  * @param {string} align 对齐方式 LT/CT/RT
 46 |  */
 47 | printerJobs.prototype.setAlign = function (align) {
 48 |   this._enqueue(commands.TEXT_FORMAT['TXT_ALIGN_' + align.toUpperCase()]);
 49 |   return this;
 50 | };
 51 | 
 52 | /**
 53 |  * 设置字体
 54 |  * @param  {string} family A/B/C
 55 |  */
 56 | printerJobs.prototype.setFont = function (family) {
 57 |   this._enqueue(commands.TEXT_FORMAT['TXT_FONT_' + family.toUpperCase()]);
 58 |   return this;
 59 | };
 60 | 
 61 | /**
 62 |  * 设定字体尺寸
 63 |  * @param  {number} width 字体宽度 1~2
 64 |  * @param  {number} height 字体高度 1~2
 65 |  */
 66 | printerJobs.prototype.setSize = function (width, height) {
 67 |   if (2 >= width && 2 >= height) {
 68 |     this._enqueue(commands.TEXT_FORMAT.TXT_NORMAL);
 69 |     if (2 === width && 2 === height) {
 70 |       this._enqueue(commands.TEXT_FORMAT.TXT_4SQUARE);
 71 |     } else if (1 === width && 2 === height) {
 72 |       this._enqueue(commands.TEXT_FORMAT.TXT_2HEIGHT);
 73 |     } else if (2 === width && 1 === height) {
 74 |       this._enqueue(commands.TEXT_FORMAT.TXT_2WIDTH);
 75 |     }
 76 |   }
 77 |   return this;
 78 | };
 79 | 
 80 | /**
 81 |  * 设定字体是否加粗
 82 |  * @param  {boolean} bold
 83 |  */
 84 | printerJobs.prototype.setBold = function (bold) {
 85 |   if (typeof bold !== 'boolean') {
 86 |     bold = true;
 87 |   }
 88 |   this._enqueue(bold ? commands.TEXT_FORMAT.TXT_BOLD_ON : commands.TEXT_FORMAT.TXT_BOLD_OFF);
 89 |   return this;
 90 | };
 91 | 
 92 | /**
 93 |  * 设定是否开启下划线
 94 |  * @param  {boolean} underline
 95 |  */
 96 | printerJobs.prototype.setUnderline = function (underline) {
 97 |   if (typeof underline !== 'boolean') {
 98 |     underline = true;
 99 |   }
100 |   this._enqueue(underline ? commands.TEXT_FORMAT.TXT_UNDERL_ON : commands.TEXT_FORMAT.TXT_UNDERL_OFF);
101 |   return this;
102 | };
103 | 
104 | /**
105 |  * 设置行间距为 n 点行,默认值行间距是 30 点
106 |  * @param {number} n 0≤n≤255
107 |  */
108 | printerJobs.prototype.setLineSpacing = function (n) {
109 |   if (n === undefined || n === null) {
110 |     this._enqueue(commands.LINE_SPACING.LS_DEFAULT);
111 |   } else {
112 |     this._enqueue(commands.LINE_SPACING.LS_SET);
113 |     this._enqueue([n]);
114 |   }
115 |   return this;
116 | };
117 | 
118 | /**
119 |  * 打印空行
120 |  * @param {number} n
121 |  */
122 | printerJobs.prototype.lineFeed = function (n = 1) {
123 |   return this.print(new Array(n).fill(commands.EOL).join(''));
124 | };
125 | 
126 | /**
127 |  *  设置字体颜色，需要打印机支持
128 |  *  @param  {number} color - 0 默认颜色黑色 1 红色
129 |  */
130 | printerJobs.prototype.setColor = function (color) {
131 |   this._enqueue(commands.COLOR[color === 1 ? 1 : 0]);
132 |   return this;
133 | };
134 | 
135 | /**
136 |  * https://support.loyverse.com/hardware/printers/use-the-beeper-in-a-escpos-printers
137 |  * 蜂鸣警报，需要打印机支持
138 |  * @param  {number} n    蜂鸣次数,1-9
139 |  * @param  {number} t 蜂鸣长短,1-9
140 |  */
141 | printerJobs.prototype.beep = function (n, t) {
142 |   this._enqueue(commands.BEEP);
143 |   this._enqueue([n, t]);
144 |   return this;
145 | };
146 | 
147 | /**
148 |  * 清空任务
149 |  */
150 | printerJobs.prototype.clear = function () {
151 |   this._queue = Array.from(commands.HARDWARE.HW_INIT);
152 |   return this;
153 | };
154 | 
155 | /**
156 |  * 返回ArrayBuffer
157 |  */
158 | printerJobs.prototype.buffer = function () {
159 |   return new Uint8Array(this._queue).buffer;
160 | };
161 | 
162 | module.exports = printerJobs;


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/printer/commands.js:
--------------------------------------------------------------------------------
  1 | /**
  2 |  * 修改自https://github.com/song940/node-escpos/blob/master/commands.js
  3 |  * ESC/POS _ (Constants)
  4 |  */
  5 | var _ = {
  6 |   LF: [0x0a],
  7 |   FS: [0x1c],
  8 |   FF: [0x0c],
  9 |   GS: [0x1d],
 10 |   DLE: [0x10],
 11 |   EOT: [0x04],
 12 |   NUL: [0x00],
 13 |   ESC: [0x1b],
 14 |   EOL: '\n',
 15 | };
 16 | 
 17 | /**
 18 |  * [FEED_CONTROL_SEQUENCES Feed control sequences]
 19 |  * @type {Object}
 20 |  */
 21 | _.FEED_CONTROL_SEQUENCES = {
 22 |   CTL_LF: [0x0a],   // Print and line feed
 23 |   CTL_GLF: [0x4a, 0x00],   // Print and feed paper (without spaces between lines)
 24 |   CTL_FF: [0x0c],   // Form feed
 25 |   CTL_CR: [0x0d],   // Carriage return
 26 |   CTL_HT: [0x09],   // Horizontal tab
 27 |   CTL_VT: [0x0b],   // Vertical tab
 28 | };
 29 | 
 30 | _.CHARACTER_SPACING = {
 31 |   CS_DEFAULT: [0x1b, 0x20, 0x00],
 32 |   CS_SET: [0x1b, 0x20]
 33 | };
 34 | 
 35 | _.LINE_SPACING = {
 36 |   LS_DEFAULT: [0x1b, 0x32],
 37 |   LS_SET: [0x1b, 0x33]
 38 | };
 39 | 
 40 | /**
 41 |  * [HARDWARE Printer hardware]
 42 |  * @type {Object}
 43 |  */
 44 | _.HARDWARE = {
 45 |   HW_INIT: [0x1b, 0x40], // Clear data in buffer and reset modes
 46 |   HW_SELECT: [0x1b, 0x3d, 0x01], // Printer select
 47 |   HW_RESET: [0x1b, 0x3f, 0x0a, 0x00], // Reset printer hardware
 48 | };
 49 | 
 50 | /**
 51 |  * [CASH_DRAWER Cash Drawer]
 52 |  * @type {Object}
 53 |  */
 54 | _.CASH_DRAWER = {
 55 |   CD_KICK_2: [0x1b, 0x70, 0x00], // Sends a pulse to pin 2 []
 56 |   CD_KICK_5: [0x1b, 0x70, 0x01], // Sends a pulse to pin 5 []
 57 | };
 58 | 
 59 | /**
 60 |  * [MARGINS Margins sizes]
 61 |  * @type {Object}
 62 |  */
 63 | _.MARGINS = {
 64 |   BOTTOM: [0x1b, 0x4f], // Fix bottom size
 65 |   LEFT: [0x1b, 0x6c], // Fix left size
 66 |   RIGHT: [0x1b, 0x51], // Fix right size
 67 | };
 68 | 
 69 | /**
 70 |  * [PAPER Paper]
 71 |  * @type {Object}
 72 |  */
 73 | _.PAPER = {
 74 |   PAPER_FULL_CUT: [0x1d, 0x56, 0x00], // Full cut paper
 75 |   PAPER_PART_CUT: [0x1d, 0x56, 0x01], // Partial cut paper
 76 |   PAPER_CUT_A: [0x1d, 0x56, 0x41], // Partial cut paper
 77 |   PAPER_CUT_B: [0x1d, 0x56, 0x42], // Partial cut paper
 78 | };
 79 | 
 80 | /**
 81 |  * [TEXT_FORMAT Text format]
 82 |  * @type {Object}
 83 |  */
 84 | _.TEXT_FORMAT = {
 85 |   TXT_NORMAL: [0x1b, 0x21, 0x00], // Normal text
 86 |   TXT_2HEIGHT: [0x1b, 0x21, 0x10], // Double height text
 87 |   TXT_2WIDTH: [0x1b, 0x21, 0x20], // Double width text
 88 |   TXT_4SQUARE: [0x1b, 0x21, 0x30], // Double width & height text
 89 | 
 90 |   TXT_UNDERL_OFF: [0x1b, 0x2d, 0x00], // Underline font OFF
 91 |   TXT_UNDERL_ON: [0x1b, 0x2d, 0x01], // Underline font 1-dot ON
 92 |   TXT_UNDERL2_ON: [0x1b, 0x2d, 0x02], // Underline font 2-dot ON
 93 |   TXT_BOLD_OFF: [0x1b, 0x45, 0x00], // Bold font OFF
 94 |   TXT_BOLD_ON: [0x1b, 0x45, 0x01], // Bold font ON
 95 |   TXT_ITALIC_OFF: [0x1b, 0x35], // Italic font ON
 96 |   TXT_ITALIC_ON: [0x1b, 0x34], // Italic font ON
 97 | 
 98 |   TXT_FONT_A: [0x1b, 0x4d, 0x00], // Font type A
 99 |   TXT_FONT_B: [0x1b, 0x4d, 0x01], // Font type B
100 |   TXT_FONT_C: [0x1b, 0x4d, 0x02], // Font type C
101 | 
102 |   TXT_ALIGN_LT: [0x1b, 0x61, 0x00], // Left justification
103 |   TXT_ALIGN_CT: [0x1b, 0x61, 0x01], // Centering
104 |   TXT_ALIGN_RT: [0x1b, 0x61, 0x02], // Right justification
105 | };
106 | 
107 | /**
108 |  * [BARCODE_FORMAT Barcode format]
109 |  * @type {Object}
110 |  */
111 | _.BARCODE_FORMAT = {
112 |   BARCODE_TXT_OFF: [0x1d, 0x48, 0x00], // HRI barcode chars OFF
113 |   BARCODE_TXT_ABV: [0x1d, 0x48, 0x01], // HRI barcode chars above
114 |   BARCODE_TXT_BLW: [0x1d, 0x48, 0x02], // HRI barcode chars below
115 |   BARCODE_TXT_BTH: [0x1d, 0x48, 0x03], // HRI barcode chars both above and below
116 | 
117 |   BARCODE_FONT_A: [0x1d, 0x66, 0x00], // Font type A for HRI barcode chars
118 |   BARCODE_FONT_B: [0x1d, 0x66, 0x01], // Font type B for HRI barcode chars
119 | 
120 |   BARCODE_HEIGHT: function (height) { // Barcode Height [1-255]
121 |     return [0x1d, 0x68, height];
122 |   },
123 |   BARCODE_WIDTH: function (width) {   // Barcode Width  [2-6]
124 |     return [0x1d, 0x77, width];
125 |   },
126 |   BARCODE_HEIGHT_DEFAULT: [0x1d, 0x68, 0x64], // Barcode height default:100
127 |   BARCODE_WIDTH_DEFAULT: [0x1d, 0x77, 0x01], // Barcode width default:1
128 | 
129 |   BARCODE_UPC_A: [0x1d, 0x6b, 0x00], // Barcode type UPC-A
130 |   BARCODE_UPC_E: [0x1d, 0x6b, 0x01], // Barcode type UPC-E
131 |   BARCODE_EAN13: [0x1d, 0x6b, 0x02], // Barcode type EAN13
132 |   BARCODE_EAN8: [0x1d, 0x6b, 0x03], // Barcode type EAN8
133 |   BARCODE_CODE39: [0x1d, 0x6b, 0x04], // Barcode type CODE39
134 |   BARCODE_ITF: [0x1d, 0x6b, 0x05], // Barcode type ITF
135 |   BARCODE_NW7: [0x1d, 0x6b, 0x06], // Barcode type NW7
136 |   BARCODE_CODE93: [0x1d, 0x6b, 0x48], // Barcode type CODE93
137 |   BARCODE_CODE128: [0x1d, 0x6b, 0x49], // Barcode type CODE128
138 | };
139 | 
140 | /**
141 |  * [IMAGE_FORMAT Image format]
142 |  * @type {Object}
143 |  */
144 | _.IMAGE_FORMAT = {
145 |   S_RASTER_N: [0x1d, 0x76, 0x30, 0x00], // Set raster image normal size
146 |   S_RASTER_2W: [0x1d, 0x76, 0x30, 0x01], // Set raster image double width
147 |   S_RASTER_2H: [0x1d, 0x76, 0x30, 0x02], // Set raster image double height
148 |   S_RASTER_Q: [0x1d, 0x76, 0x30, 0x03], // Set raster image quadruple
149 | };
150 | 
151 | /**
152 |  * [BITMAP_FORMAT description]
153 |  * @type {Object}
154 |  */
155 | _.BITMAP_FORMAT = {
156 |   BITMAP_S8: [0x1b, 0x2a, 0x00],
157 |   BITMAP_D8: [0x1b, 0x2a, 0x01],
158 |   BITMAP_S24: [0x1b, 0x2a, 0x20],
159 |   BITMAP_D24: [0x1b, 0x2a, 0x21]
160 | };
161 | 
162 | /**
163 |  * [GSV0_FORMAT description]
164 |  * @type {Object}
165 |  */
166 | _.GSV0_FORMAT = {
167 |   GSV0_NORMAL: [0x1d, 0x76, 0x30, 0x00],
168 |   GSV0_DW: [0x1d, 0x76, 0x30, 0x01],
169 |   GSV0_DH: [0x1d, 0x76, 0x30, 0x02],
170 |   GSV0_DWDH: [0x1d, 0x76, 0x30, 0x03]
171 | };
172 | 
173 | /**
174 |  * [BEEP description]
175 |  * @type {string}
176 |  */
177 | _.BEEP = [0x1b, 0x42]; // Printer Buzzer pre hex
178 | 
179 | /**
180 |  * [COLOR description]
181 |  * @type {Object}
182 |  */
183 | 
184 | _.COLOR = {
185 |   0: [0x1b, 0x72, 0x00], // black
186 |   1: [0x1b, 0x72, 0x01] // red
187 | };
188 | 
189 | /**
190 |  * [exports description]
191 |  * @type {[type]}
192 |  */
193 | module.exports = _;


--------------------------------------------------------------------------------
/pages/index/index.js:
--------------------------------------------------------------------------------
  1 | const LAST_CONNECTED_DEVICE = 'last_connected_device'
  2 | const PrinterJobs = require('../../printer/printerjobs')
  3 | const printerUtil = require('../../printer/printerutil')
  4 | 
  5 | function inArray(arr, key, val) {
  6 |   for (let i = 0; i < arr.length; i++) {
  7 |     if (arr[i][key] === val) {
  8 |       return i
  9 |     }
 10 |   }
 11 |   return -1
 12 | }
 13 | 
 14 | function ab2str(buf) {
 15 |   return String.fromCharCode.apply(null, new Uint8Array(buf));
 16 | }
 17 | 
 18 | // ArrayBuffer转16进度字符串示例
 19 | function ab2hex(buffer) {
 20 |   const hexArr = Array.prototype.map.call(
 21 |     new Uint8Array(buffer),
 22 |     function (bit) {
 23 |       return ('00' + bit.toString(16)).slice(-2)
 24 |     }
 25 |   )
 26 |   return hexArr.join(',')
 27 | }
 28 | 
 29 | function str2ab(str) {
 30 |   // Convert str to ArrayBuff and write to printer
 31 |   let buffer = new ArrayBuffer(str.length)
 32 |   let dataView = new DataView(buffer)
 33 |   for (let i = 0; i < str.length; i++) {
 34 |     dataView.setUint8(i, str.charAt(i).charCodeAt(0))
 35 |   }
 36 |   return buffer;
 37 | }
 38 | 
 39 | Page({
 40 |   data: {
 41 |     devices: [],
 42 |     connected: false,
 43 |     chs: [],
 44 |     barcode :[],
 45 |   },
 46 |   onUnload() {
 47 |     this.closeBluetoothAdapter()
 48 |   },
 49 |   openBluetoothAdapter() {
 50 |     if (!wx.openBluetoothAdapter) {
 51 |       wx.showModal({
 52 |         title: '提示',
 53 |         content: '当前微信版本过低，无法使用该功能，请升级到最新微信版本后重试。'
 54 |       })
 55 |       return
 56 |     }
 57 |     wx.openBluetoothAdapter({
 58 |       success: (res) => {
 59 |         console.log('openBluetoothAdapter success', res)
 60 |         this.startBluetoothDevicesDiscovery()
 61 |       },
 62 |       fail: (res) => {
 63 |         console.log('openBluetoothAdapter fail', res)
 64 |         if (res.errCode === 10001) {
 65 |           wx.showModal({
 66 |             title: '错误',
 67 |             content: '未找到蓝牙设备, 请打开蓝牙后重试。',
 68 |             showCancel: false
 69 |           })
 70 |           wx.onBluetoothAdapterStateChange((res) => {
 71 |             console.log('onBluetoothAdapterStateChange', res)
 72 |             if (res.available) {
 73 |               // 取消监听，否则stopBluetoothDevicesDiscovery后仍会继续触发onBluetoothAdapterStateChange，
 74 |               // 导致再次调用startBluetoothDevicesDiscovery
 75 |               wx.onBluetoothAdapterStateChange(() => {
 76 |               });
 77 |               this.startBluetoothDevicesDiscovery()
 78 |             }
 79 |           })
 80 |         }
 81 |       }
 82 |     })
 83 |     wx.onBLEConnectionStateChange((res) => {
 84 |       // 该方法回调中可以用于处理连接意外断开等异常情况
 85 |       console.log('onBLEConnectionStateChange', `device ${res.deviceId} state has changed, connected: ${res.connected}`)
 86 |       this.setData({
 87 |         connected: res.connected
 88 |       })
 89 |       if (!res.connected) {
 90 |         wx.showModal({
 91 |           title: '错误',
 92 |           content: '蓝牙连接已断开',
 93 |           showCancel: false
 94 |         })
 95 |       }
 96 |     });
 97 |   },
 98 |   getBluetoothAdapterState() {
 99 |     wx.getBluetoothAdapterState({
100 |       success: (res) => {
101 |         console.log('getBluetoothAdapterState', res)
102 |         if (res.discovering) {
103 |           this.onBluetoothDeviceFound()
104 |         } else if (res.available) {
105 |           this.startBluetoothDevicesDiscovery()
106 |         }
107 |       }
108 |     })
109 |   },
110 |   startBluetoothDevicesDiscovery() {
111 |     if (this._discoveryStarted) {
112 |       return
113 |     }
114 |     this._discoveryStarted = true
115 |     wx.startBluetoothDevicesDiscovery({
116 |       success: (res) => {
117 |         console.log('startBluetoothDevicesDiscovery success', res)
118 |         this.onBluetoothDeviceFound()
119 |       },
120 |       fail: (res) => {
121 |         console.log('startBluetoothDevicesDiscovery fail', res)
122 |       }
123 |     })
124 |   },
125 |   stopBluetoothDevicesDiscovery() {
126 |     wx.stopBluetoothDevicesDiscovery({
127 |       complete: () => {
128 |         console.log('stopBluetoothDevicesDiscovery')
129 |         this._discoveryStarted = false
130 |       }
131 |     })
132 |   },
133 |   onBluetoothDeviceFound() {
134 |     wx.onBluetoothDeviceFound((res) => {
135 | 
136 |       console.log('onBluetoothDeviceFound res',res)
137 |       res.devices.forEach(device => {
138 |         if (!device.name && !device.localName) { 
139 |           return
140 |         }
141 | 
142 |       console.log('onBluetoothDeviceFound device',device)
143 | 
144 |         const foundDevices = this.data.devices
145 |         const idx = inArray(foundDevices, 'deviceId', device.deviceId)
146 |         const data = {}
147 |         if (idx === -1) {
148 |           data[`devices[${foundDevices.length}]`] = device
149 |         } else {
150 |           data[`devices[${idx}]`] = device
151 |         }
152 |         this.setData(data)
153 |       })
154 |     })
155 |   },
156 |   createBLEConnection(e) {
157 |     const ds = e.currentTarget.dataset
158 |     const deviceId = ds.deviceId
159 |     const name = ds.name
160 |     this._createBLEConnection(deviceId, name)
161 |   },
162 |   _createBLEConnection(deviceId, name) {
163 |     wx.showLoading()
164 |     wx.createBLEConnection({
165 |       deviceId,
166 |       success: () => {
167 |         console.log('createBLEConnection success');
168 |         this.setData({
169 |           connected: true,
170 |           name,
171 |           deviceId,
172 |         })
173 |         this.getBLEDeviceServices(deviceId)
174 |         wx.setStorage({
175 |           key: LAST_CONNECTED_DEVICE,
176 |           data: name + ':' + deviceId
177 |         })
178 |       },
179 |       complete() {
180 |         wx.hideLoading()
181 |       },
182 |       fail: (res) => {
183 |         console.log('createBLEConnection fail', res)
184 |       }
185 |     })
186 |     this.stopBluetoothDevicesDiscovery()
187 |   },
188 |   closeBLEConnection() {
189 |     wx.closeBLEConnection({
190 |       deviceId: this.data.deviceId
191 |     })
192 |     this.setData({
193 |       connected: false,
194 |       chs: [],
195 |       canWrite: false,
196 |       barcode:[],
197 |     })
198 |   },
199 |   getBLEDeviceServices(deviceId) {
200 |     wx.getBLEDeviceServices({
201 |       deviceId,
202 |       success: (res) => {
203 |         console.log('getBLEDeviceServices', res)
204 |         for (let i = 0; i < res.services.length; i++) {
205 |           if (res.services[i].isPrimary) {
206 |             this.getBLEDeviceCharacteristics(deviceId, res.services[i].uuid) 
207 |           }
208 |         }
209 |       }
210 |     })
211 |   },
212 |   getBLEDeviceCharacteristics(deviceId, serviceId) {
213 |     let that = this;
214 |     wx.getBLEDeviceCharacteristics({
215 |       deviceId,
216 |       serviceId,
217 |       success: (res) => {
218 |         console.log('getBLEDeviceCharacteristics success', res.characteristics)
219 |         // 这里会存在特征值是支持write，写入成功但是没有任何反应的情况
220 |         // 只能一个个去试
221 |         for (let i = 0; i < res.characteristics.length; i++) { 
222 |           const item = res.characteristics[i]
223 |           if (item.properties.indicate){
224 |             console.log('getBLEDeviceCharacteristics indicate item is true', item)
225 |           }else{
226 |             console.log('getBLEDeviceCharacteristics indicate item is false', item)
227 |             return
228 |           }
229 |           if ( item.properties.notify && item.properties.indicate) {
230 |             this.setData({
231 |               canWrite: true
232 |             })
233 |             this._deviceId = deviceId
234 |             this._serviceId = serviceId
235 |             this._characteristicId = item.uuid
236 | 
237 | 
238 |             wx.notifyBLECharacteristicValueChange({
239 |               characteristicId: item.uuid,
240 |               
241 |               deviceId: deviceId,
242 |               
243 |               serviceId: serviceId,
244 |               
245 |               state: true,
246 |               type:'notification',
247 |               fail (res) {
248 |                   console.log({res})
249 |               },
250 |               complete:function(res){ 
251 |                 console.log('44444444444444444444444',res)
252 |         
253 |               },
254 |               success:function(res){
255 |               
256 |               console.log('notify启用',res); 
257 |                   wx.onBLECharacteristicValueChange((result) => { 
258 |                     console.log('监听特征值变化',result); 
259 |                     const barcode = [ab2str(result.value),...that.data.barcode];
260 |                     that.setData({barcode}) 
261 |                   })
262 |               } 
263 |           }); 
264 |             break;
265 |           }
266 |         }
267 |       },
268 |       fail(res) {
269 |         console.error('getBLEDeviceCharacteristics', res)
270 |       }
271 |     })
272 |   },
273 |   writeBLECharacteristicValue() {
274 |     let printerJobs = new PrinterJobs();
275 |     printerJobs
276 |       .print('2018年12月5日17:34')
277 |       .print(printerUtil.fillLine())
278 |       .setAlign('ct')
279 |       .setSize(2, 2)
280 |       .print('#20饿了么外卖')
281 |       .setSize(1, 1)
282 |       .print('切尔西Chelsea')
283 |       .setSize(2, 2)
284 |       .print('在线支付(已支付)')
285 |       .setSize(1, 1)
286 |       .print('订单号：5415221202244734')
287 |       .print('下单时间：2017-07-07 18:08:08')
288 |       .setAlign('lt')
289 |       .print(printerUtil.fillAround('一号口袋'))
290 |       .print(printerUtil.inline('意大利茄汁一面 * 1', '15'))
291 |       .print(printerUtil.fillAround('其他'))
292 |       .print('餐盒费：1')
293 |       .print('[赠送康师傅冰红茶] * 1')
294 |       .print(printerUtil.fillLine())
295 |       .setAlign('rt')
296 |       .print('原价：￥16')
297 |       .print('总价：￥16')
298 |       .setAlign('lt')
299 |       .print(printerUtil.fillLine())
300 |       .print('备注')
301 |       .print("无")
302 |       .print(printerUtil.fillLine())
303 |       .println();
304 | 
305 |     let buffer = printerJobs.buffer();
306 |     console.log('ArrayBuffer', 'length: ' + buffer.byteLength, ' hex: ' + ab2hex(buffer));
307 |     // 1.并行调用多次会存在写失败的可能性
308 |     // 2.建议每次写入不超过20字节
309 |     // 分包处理，延时调用
310 |     const maxChunk = 20;
311 |     const delay = 20;
312 |     for (let i = 0, j = 0, length = buffer.byteLength; i < length; i += maxChunk, j++) {
313 |       let subPackage = buffer.slice(i, i + maxChunk <= length ? (i + maxChunk) : length);
314 |       setTimeout(this._writeBLECharacteristicValue, j * delay, subPackage);
315 |     }
316 |   },
317 |   _writeBLECharacteristicValue(buffer) {
318 |     wx.writeBLECharacteristicValue({
319 |       deviceId: this._deviceId,
320 |       serviceId: this._serviceId,
321 |       characteristicId: this._characteristicId,
322 |       value: buffer,
323 |       success(res) {
324 |         console.log('writeBLECharacteristicValue success', res)
325 |       },
326 |       fail(res) {
327 |         console.log('writeBLECharacteristicValue fail', res)
328 |       }
329 |     })
330 |   },
331 |   closeBluetoothAdapter() {
332 |     wx.closeBluetoothAdapter()
333 |     this._discoveryStarted = false
334 |   },
335 |   onLoad(options) {
336 |     const lastDevice = wx.getStorageSync(LAST_CONNECTED_DEVICE);
337 |     this.setData({
338 |       lastDevice: lastDevice
339 |     })
340 |   },
341 |   createBLEConnectionWithDeviceId(e) {
342 |     // 小程序在之前已有搜索过某个蓝牙设备，并成功建立连接，可直接传入之前搜索获取的 deviceId 直接尝试连接该设备
343 |     const device = this.data.lastDevice
344 |     if (!device) {
345 |       return
346 |     }
347 |     const index = device.indexOf(':');
348 |     const name = device.substring(0, index);
349 |     const deviceId = device.substring(index + 1, device.length);
350 |     console.log('createBLEConnectionWithDeviceId', name + ':' + deviceId)
351 |     wx.openBluetoothAdapter({
352 |       success: (res) => {
353 |         console.log('openBluetoothAdapter success', res)
354 |         this._createBLEConnection(deviceId, name)
355 |       },
356 |       fail: (res) => {
357 |         console.log('openBluetoothAdapter fail', res)
358 |         if (res.errCode === 10001) {
359 |           wx.showModal({
360 |             title: '错误',
361 |             content: '未找到蓝牙设备, 请打开蓝牙后重试。',
362 |             showCancel: false
363 |           })
364 |           wx.onBluetoothAdapterStateChange((res) => {
365 |             console.log('onBluetoothAdapterStateChange', res)
366 |             if (res.available) {
367 |               // 取消监听
368 |               wx.onBluetoothAdapterStateChange(() => {
369 |               });
370 |               this._createBLEConnection(deviceId, name)
371 |             }
372 |           })
373 |         }
374 |       }
375 |     })
376 |   }
377 | })


--------------------------------------------------------------------------------
/miniprogram_npm/text-encoding/index.js.map:
--------------------------------------------------------------------------------
1 | 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  6 |       <change beforePath="$PROJECT_DIR$/pages/index/index.js" afterPath="$PROJECT_DIR$/pages/index/index.js" />
  7 |       <change beforePath="$PROJECT_DIR$/pages/index/index.wxml" afterPath="$PROJECT_DIR$/pages/index/index.wxml" />
  8 |     </list>
  9 |     <ignored path="$PROJECT_DIR$/.tmp/" />
 10 |     <ignored path="$PROJECT_DIR$/temp/" />
 11 |     <ignored path="$PROJECT_DIR$/tmp/" />
 12 |     <option name="EXCLUDED_CONVERTED_TO_IGNORED" value="true" />
 13 |     <option name="TRACKING_ENABLED" value="true" />
 14 |     <option name="SHOW_DIALOG" value="false" />
 15 |     <option name="HIGHLIGHT_CONFLICTS" value="true" />
 16 |     <option name="HIGHLIGHT_NON_ACTIVE_CHANGELIST" value="false" />
 17 |     <option name="LAST_RESOLUTION" value="IGNORE" />
 18 |   </component>
 19 |   <component name="FileEditorManager">
 20 |     <leaf SIDE_TABS_SIZE_LIMIT_KEY="375">
 21 |       <file leaf-file-name="printerjobs.js" pinned="false" current-in-tab="false">
 22 |         <entry file="file://$PROJECT_DIR$/printer/printerjobs.js">
 23 |           <provider selected="true" editor-type-id="text-editor">
 24 |             <state relative-caret-position="571">
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 26 |               <folding />
 27 |             </state>
 28 |           </provider>
 29 |         </entry>
 30 |       </file>
 31 |       <file leaf-file-name="index.js" pinned="false" current-in-tab="true">
 32 |         <entry file="file://$PROJECT_DIR$/pages/index/index.js">
 33 |           <provider selected="true" editor-type-id="text-editor">
 34 |             <state relative-caret-position="239">
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 36 |               <folding>
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