var that = this;

var hex = ‘01313233343536’

var typedArray = new Uint8Array(hex.match(/[\da-f]{2}/gi).map(function (h) {

return parseInt(h, 16)

}))

console.log(typedArray)

console.log([0xAA, 0x55, 0x04, 0xB1, 0x00, 0x00, 0xB5])

var buffer1 = typedArray.buffer

console.log(wx.canIUse(‘writeBLECharacteristicValue’))

wx.writeBLECharacteristicValue({

// 这里的 deviceId 需要在上面的 getBluetoothDevices 或 onBluetoothDeviceFound 接口中获取  

deviceId: that.data.connectedDeviceId,

// 这里的 serviceId 需要在上面的 getBLEDeviceServices 接口中获取  

// serviceId: that.data.writeServicweId,

serviceId: ‘00008000-0101-0001-4A6F-796D65746572’,

// 这里的 characteristicId 需要在上面的 getBLEDeviceCharacteristics 接口中获取  

// characteristicId: that.data.writeCharacteristicsId,

characteristicId: ‘00008004-0101-0001-4A6F-796D65746572’,

// 这里的value是ArrayBuffer类型  

value: buffer1,

success: function (res) {

wx.showLoading({

title: ‘入网中’,

})