小程序配网代码示例说明
设备端: 需要具备WI-FI和蓝牙功能
小程序端: 通过微信小程序提供的API来实现与设备的连接、通信和配网
配网流程: 选择WI-FI、发送配置数据、设备连接WI-FI、确认配网成功
1.小程序配网流程
获取WI-FI信息:
配网之前调用微信 wx.startWifi API初始化WI-FI模块获取WI-FI信息,输入连接WI-FI的密码存储下来
获取设备信息:
使用小程序的wx.openBluetoothAdapter和wx.getBluetoothDevicesAPI,通过蓝牙搜索设备获取设备的信息,选择并连接
发送WI-FI信息到设备:
通过之前保存的WI-FI信息通过蓝牙发送到设备端进行配网操作,等待设备返回信息确认配网成功
2. 小程序实现WI-FI配网
1.先获取wifi信息保存下来
startConfigNet:function(e) {
wx.startWifi({
success(res) {
console.log(res.errMsg, "wifi初始化成功")
wx.getConnectedWifi({
success: (result) => {
console.log("test");console.log(result.wifi.frequency);
if(result.wifi.frequency > 3000){
wx.showModal({
title: '错误',
content: '不支持5G频段WIFI，请重新选择WIFI网络！'
})
}else{
app.WIFIInformation.SSID = result.wifi.SSID;
wx.navigateTo({
url: '/pages/input_wifi_psd/input_wifi_psd',
})
}
},
fail:(result) => {
console.log(result);
wx.showModal({
title: '错误',
content: 'WIFI初始化失败,请检查是否连接WIFI和是否开启定位功能'
})
},
},)
},
fail: function(res){
console.log(res.errMsg, "wifi初始化失败")
wx.showModal({
title: '错误',
content: 'WIFI初始化失败,请检查是否连接WIFI'
})
}
})
}
2.通过蓝牙搜索并连接设备后获取可以监听与写数据的uuid
//搜索设备
startSearch: function () {
var that = this
wx.stopPullDownRefresh()
wx.closeBluetoothAdapter({
complete(res) {
wx.openBluetoothAdapter({
success: function (res) {
wx.getBluetoothAdapterState({
success: function (res) {
console.log('openBluetoothAdapter success', res)
if (res.available) {
if (res.discovering) {
wx.stopBluetoothDevicesDiscovery({
success: function (res) {console.log(res)}
})
} else {that.getBluetoothDevices()}
} else {
wx.showModal({title: '提示',content: '本机蓝牙适配器不可用',showCancel: false})
}
},
})
},
fail: function () {
wx.showModal({title: '提示',content: '手机蓝牙未打开，请打开蓝牙！',showCancel: false })
}
})
}
})
},
checkPemission: function () { //android 6.0以上需授权地理位置权限
var that = this
var platform = app.BLEInformation.platform
if (platform == "ios") {
app.globalData.platform = "ios"
that.getBluetoothDevices()
} else if (platform == "android") {
app.globalData.platform = "android"
console.log(app.getSystem().substring(app.getSystem().length - (app.getSystem().length - 8), app.getSystem().length - (app.getSystem().length - 8) + 1))
if (app.getSystem().substring(app.getSystem().length - (app.getSystem().length - 8), app.getSystem().length - (app.getSystem().length - 8) + 1) > 5) {
wx.getSetting({
success: function (res) {
console.log(res)
if (!res.authSetting['scope.userLocation']) {
wx.authorize({
scope: 'scope.userLocation',
complete: function (res) {
that.getBluetoothDevices()
}
})
} else {
that.getBluetoothDevices()
}
}
})
}
}
},
getBluetoothDevices: function () { //获取蓝牙设备信息
var that = this
console.log("start search")
that.setData({
isScanning: true
})
wx.startBluetoothDevicesDiscovery({
success: function (res) {
console.log(res)
if(timerID != -1) return
timerID = setInterval(function () {
wx.getBluetoothDevices({
success: function (res) {
console.log("searching...",res)
var devices = []
var num = 0
for (var i = 0; i < res.devices.length; ++i) {
if (res.devices[i].name != "未知设备" && res.devices[i].name.startsWith('WT')) {
devices[num] = res.devices[i]
num++
}
// if (res.devices[i].name != "未知设备" && res.devices[i].name != undefined && res.devices[i].name != null) {
// devices[num] = res.devices[i]
// num++
// }
}
that.setData({
list: devices,
isScanning: true
})
console.log(devices)
},
})
}, 2500)
},
})
},
3.将wifi信息与指定的协议数据发送给设备进行配网
// 将 Wi-Fi 信息发送给设备进行配网
sendWifiInfoToDevice(wifi) {
// 这里可以通过蓝牙、局域网等方式将 Wi-Fi 配置信息发送给设备
// 假设通过蓝牙发送配网信息
var writeNum=14; //代表固定的不包含wifi名称和wifi密码的总长度
var ssid = ""//wifi名称
var pwd = ""//wifi密码
var ssid_array = ""//对ssid(wifi名称)转码;
writeNum=writeNum+ssid_array.length //累加名称长度
var pwd_array = ""//对pwd(wifi密码)转码;
writeNum=writeNum+pwd_array.length //累加密码长度
var writeArray=new ArrayBuffer(writeNum)//数据包长度
const uint8View = new Uint8Array(writeArray); //需要填充指定对应的协议信息与wifi信息
//按照协议说明对照
uint8View[0]=126
const hexString = (writeNum-2).toString(16)
const paddedHexString = hexString.padStart(4, '0');
const byte1 = parseInt(paddedHexString.substring(0, 2), 16) & 255;
const byte2 = parseInt(paddedHexString.substring(2, 4), 16) & 255;
uint8View[1]=byte1
uint8View[2]=byte2
uint8View[3]=0
uint8View[4]=0
uint8View[5]=1
uint8View[6]=89
uint8View[7]=222
const hexString1 = (writeNum-12).toString(16)
const paddedHexString1 = hexString1.padStart(4, '0');
const byte3 = parseInt(paddedHexString1.substring(0, 2), 16) & 255;
const byte4 = parseInt(paddedHexString1.substring(2, 4), 16) & 255;
uint8View[8]=byte3
uint8View[9]=byte4
uint8View[10]=ssid.length
//循环名称填充
for(let i=0;i<ssid_array.length;i++){
uint8View[i+11]=ssid_array[i]
}
uint8View[11+ssid_array.length]=pwd.length
//循环密码填充
for(let i=0;i<pwd_array.length;i++){
uint8View[i+12+ssid_array.length]=pwd_array[i]
}
//循环从byte1开始到此的字节相加之和后计算出校验和
var checksum=0;
for(let i=0;i<uint8View.length-3;i++){
checksum=checksum+uint8View[i+1]
}
uint8View[12+pwd_array.length+ssid_array.length]=checksum & 255
uint8View[13+pwd_array.length+ssid_array.length]=239
wx.getBluetoothDevices({
success: res => {
const device = res.devices[0]; // 获取第一个设备，假设是目标设备
if (device) {
// 发送 Wi-Fi 信息给设备
wx.writeBLECharacteristicValue({
deviceId: device.deviceId,
serviceId: 'YOUR-SERVICE-ID',
characteristicId: 'YOUR-CHARACTERISTIC-ID',
value: uint8View.buffer,
success: () => {
console.log('Wi-Fi 配网信息已发送到设备');
},
fail: err => {
console.error('发送配网信息失败', err);
}
});
}
},
fail: err => {
console.error('获取蓝牙设备失败', err);
}
});
}