因为最近应产品经理的需要,须要做一个Android版的上位机APP,为此专门到某宝上购买了一个Type-C转串口的小设施,而后就开始折腾了。花了几天的工夫就把上位机APP做进去了,起初在闲暇工夫又做了一个串口调试的小工具,成果如下图
创立我的项目
ionic start blank
创立一个空白我的项目
装置串口插件
要做一个串口通信的工具,那就得和硬件打交道,正好依据ionic官网文档,我找到了一个串口通信的插件,名为cordovarduino,通过尝试之后,发现此插件因为久年失修,尽管能够应用,然而在收发数据的时候总是无奈残缺接管到数据。依据对其代码查看,发现其中lib目录下有一个usbseriallibrary.jar文件,这个应该就是USB串口的驱动文件了吧。
久年失修的插件,预计就是这个jar包有问题,应该更新一下这个jar包就能够了,因而,通过usb-serial-for-android这个我的项目的介绍我从新打包了一个jar包,实现后尝试了一下,的确很完满,并且收发数据也没有任何问题了。因而,本人依据cordovarduino我的项目从新copy了一个我的项目cordova-plugin-usbserialport,因而你只须要装置我提供的插件即可
装置串口插件
ionic cordova plugin add cordova-plugin-usbserialport
装置本地数据存储插件
ionic cordova plugin add cordova-plugin-nativestoragenpm install @ionic-native/native-storage
装置状态栏插件
ionic cordova plugin add cordova-plugin-statusbarnpm install @ionic-native/status-bar
装置设施信息插件
ionic cordova plugin add cordova-plugin-devicenpm install @ionic-native/device
装置获取版本号插件
ionic cordova plugin add cordova-plugin-app-versionnpm install @ionic-native/app-version
装置APP最小化插件
ionic cordova plugin add cordova-plugin-appminimizenpm install @ionic-native/app-minimize
装置后盾运行插件
ionic cordova plugin add cordova-plugin-background-modenpm install @ionic-native/background-mode
串口操作次要代码
declare let usbSerialPort: any; // 引入串口插件
// 关上串口async openSerialPort() { const config = await this.nativeStorage.getItem('config'); // First request permission usbSerialPort.requestPermission(() => { console.log('get permission success.'); usbSerialPort.getDevice(data => { this.title = data.name; }); // open serial usbSerialPort.open(config, () => { console.log('Serial connection opened'); // get open status this.isOpen(); // read listener usbSerialPort.readListener(data => { clearTimeout(this.timer); const view = new Uint8Array(data); console.log(this.utils.bytes2HexString(view)); this.receiveDataArray.push(view); this.timer = setTimeout(() => { const now = new Date(); const dateMs = now.getMilliseconds(); this.zone.run(() => { const date = `<span style="color: #2fdf75">${this.utils.formatDate(now, 'hh:mm:ss')}.${dateMs} > </span>`; const resultUint8Array = this.utils.concatUint(Uint8Array, ...this.receiveDataArray); if (!this.utils.bytes2HexString(resultUint8Array)) { return; } this.receiveData += `<div style="-webkit-user-select: auto;-moz-user-select: auto;-ms-user-select: auto;user-select: auto;">${date}${this.utils.strDivision(this.utils.bytes2HexString(resultUint8Array), 2)}</div>`; this.receiveData += `<div style="margin-top:8px"></div>`; this.receiveLength = this.utils.bytes2HexString(resultUint8Array).length / 2; this.scrollToBottom(); }); }, 500); }, err => { console.log(`Read listener error: ${err}`); }); }); }, err => { console.log(`Get permission error: ${err}`); if (this.openStatus) { this.zone.run(() => { this.openStatus = false; this.title = this.translate.instant('SERIAL_DEVICE_TITLE'); }); } this.presentToast(this.translate.instant('NO_DEVICE_CONNECTED')); });}
// 串口写入writerSerial() { if (!this.openStatus) { if (this.pack) { this.presentAlert(); } return; } this.receiveDataArray = []; const now = new Date(); const dateMs = now.getMilliseconds(); if (this.isWriterHex) { usbSerialPort.writeHex(this.pack, (res: any) => { console.log('writer res: ', res); const date = `<span style="color:#3880ff">${this.utils.formatDate(now, 'hh:mm:ss')}.${dateMs} < </span>`; this.receiveData += `<div>${date}${this.utils.strDivision(this.pack, 2)}</div>`; this.sendLength = this.pack.length / 2; }, err => { console.log('writer hex err: ', err); this.presentToast(); this.closeSerial(); }); } else { usbSerialPort.write(this.pack, (res: any) => { console.log('writer res: ', res); const date = `<span style="color:#3880ff">${this.utils.formatDate(now, 'hh:mm:ss')}.${dateMs} < </span>`; this.receiveData += `<div>${date}${this.utils.strDivision(this.utils.bufToHex(this.utils.stringToBytes(this.pack)), 2)}</div>`; this.sendLength = this.utils.getStringByteLength(this.pack); }, err => { console.log('writer string err: ', err); this.presentToast(); this.closeSerial(); }); }}
// 串口开启状态isOpen() { usbSerialPort.isOpen(status => { console.log(`Serial open status: ${status}`); this.zone.run(() => { this.openStatus = status; }); });}
// 敞开串口closeSerial(isOpenSerial?: boolean) { usbSerialPort.close(() => { this.isOpen(); this.receiveDataArray = []; if (isOpenSerial) { this.openSerialPort(); } });}
其余
为了可能对串口波特率进行设置,我还做了一个设置页面,次要用于设置波特率、数据位、进行位、以及收发数据记录的背景色彩切换、语言切换等性能。
重要代码如下:
version: any = '';config: any = {};// eslint-disable-next-line @typescript-eslint/ban-typesconfigTemp: object = {};// 色彩列表colorList: any[] = [ 'color-white', 'color-red', 'color-blue', 'color-cyan', 'color-yellow', 'color-green', 'color-black', 'color-cornsilk', 'color-darkviolet', 'color-gainsboro', 'color-maroon', 'color-pink',];lang: any;constructor( private appVersion: AppVersion, private nativeStorage: NativeStorage, private modalController: ModalController, private translate: TranslateService, private zone: NgZone) { }ionViewWillEnter() { this.initBackgroundColor(); this.getVersion(); this.getSerialPortConfig(); this.getLanguage();}async initBackgroundColor() { const backgroundClass = await this.nativeStorage.getItem('backgroundClass'); console.log('settings backagroun class', backgroundClass); const activeClass = 'color-active'; this.colorList.forEach((item, index) => { if (item === backgroundClass) { console.log('have same'); this.zone.run(() => { this.colorList[index] = `${item} ${activeClass}`; }); } }); console.log('color list', this.colorList);}/** * get App version * * @memberof SettingsPage */async getVersion() { this.version = await this.appVersion.getVersionNumber();}/** * Get serial port config * * @memberof SettingsPage */async getSerialPortConfig() { this.config = await this.nativeStorage.getItem('config'); this.configTemp = Object.assign({}, this.config); console.log('config', this.config);}async setSerialPortConfig() { await this.nativeStorage.setItem('config', this.config); const configIsCHange = JSON.stringify(this.configTemp) !== JSON.stringify(this.config); this.modalController.dismiss({ configIsChange: configIsCHange });}async setBackgroundColor(className: string) { await this.nativeStorage.setItem('backgroundClass', className); this.modalController.dismiss();}async getLanguage() { this.lang = await this.nativeStorage.getItem('locale');}async setLanguage() { await this.nativeStorage.setItem('locale', this.lang); this.translate.setDefaultLang(this.lang); this.translate.use(this.lang);}
总结
Cordova的确太老了,感觉都快曾经被Apache摈弃了,Cordova的更新速度也很慢,就连目前的ionic都开发了本人的混合框架capacitor,而且也兼容Cordova插件,只不过面对react-native以及flutter来说,ionic目前处于一个比拟难堪的局面,因为react-native与flutter从性能上都能够碾压ionic,不过ionic的长处就是打包后apk占用空间是极小的。
不论如何,ionic绝对于react-native和flutter来说,能够让前端开发人员疾速上手,并且疾速开发与公布利用,其中坑较少,学习成本低,再加上现在的ionic曾经齐全从一个依赖于Cordova的挪动端框架转变为了UI框架,你能够应用angular、vue、react甚至是原生JavaScript进行疾速开发。
不过capacitor的插件目前少之又少,而Cordova的插件尽管多,然而太旧很多插件更新速度太慢,大家就抱着学习的态度去应用就能够了,当然如果抉择ionic来作为生产力框架的话也没多大问题。
我的项目地址
APP我的项目 https://github.com/king2088/i...
cordova串口插件我的项目 https://github.com/king2088/c...