508 lines
12 KiB
Vue
508 lines
12 KiB
Vue
<template>
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<view class="weightPages">
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<view class="table">
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<view class="textTipe">
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<image src="/static/zhong.png"></image>
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<text @click="openBluetoothAdapter">{{bleTipsText}}</text>
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</view>
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<view class="duan" @click="handleBack" v-if="isShow&&isConnection == 2">
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断开连接
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</view>
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</view>
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<!-- -->
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<view class="weight-wrap">
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<!-- 蓝牙称重 -->
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<view class="weight" @click="inputDialogToggle">
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<text class="val">{{weight == '' ? '0.0':weight}}</text>
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<text class="unit">{{unit}}</text>
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</view>
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</view>
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<!-- -->
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<view class="groupbtn">
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<view class="btn danwei">
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<view class="lan border-bottom">
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<view class="right">
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<picker mode="selector" :range="unitA" @change="changleUnits" :value="unitListIndex">
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<view class="uni-input">
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单位
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</view>
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</picker>
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</view>
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</view>
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</view>
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<view class="btn addbtn size14" @click="handlesub" v-if="btnType==2">保存</view>
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<view class="btn addbtn" @click="handleAddFood" v-if="btnType==1">+</view>
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<view class="btn qingling" @click="handleqingling">清零</view>
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</view>
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<!-- -->
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<view>
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<uni-popup ref="popup" type="dialog">
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<uni-popup-dialog mode="input" title="重量" placeholder="请输入食物重量" @close="close"
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@confirm="confirm"></uni-popup-dialog>
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</uni-popup>
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</view>
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</view>
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</template>
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<script>
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import {
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mapState
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} from "vuex";
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let myTime
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let nextCnt = 0
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export default {
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data() {
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return {
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kcal: 0,
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unit: 'g',
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deviceId: "",
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serviceId: "",
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notify: "",
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write: "",
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unitA: [],
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inputDialog: false,
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unitListIndex: 0,
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}
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},
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props: {
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weightKcal: {
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type: Number,
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default: 0 //当前测量食物每100g含的kcal
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},
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btnType: {
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type: Number,
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default: 1 //1添加食材，2保存测量
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}
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},
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computed: {
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...mapState(["bleValue", "countFoodInfo", "isBluetoothTyle", ]),
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weight() {
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let weightNew = this.$ble.convertToGrams(this.bleValue.foodWeight, this.bleValue.foodUnit)
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this.kcal = (Number(this.weightKcal) / 100 * weightNew).toFixed(1)
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this.unit = this.bleValue.foodUnit
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return this.bleValue.foodWeight
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},
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isConnection() {
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return this.bleValue.isConnectStatus
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},
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isShow() {
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return this.bleValue.serviceId != '' ? true : false
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},
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bleTipsText() {
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return this.bleValue.bleTipsText
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},
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},
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mounted() {
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let that = this
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uni.onBluetoothAdapterStateChange(function(res) {
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that.$store.commit("changeBluetooth", res.available);
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})
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},
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watch: {
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isBluetoothTyle: function() {
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let that = this
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if (!that.isBluetoothTyle) {
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that.handleBack()
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}
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},
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bleValue: {
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handler(newVal, oldVal) {
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let that = this
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if (newVal.serviceId) {
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that.deviceId = newVal.deviceId
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that.serviceId = newVal.serviceId
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that.getBLEDeviceCharacteristics()
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}
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that.unitA = newVal.unitList
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that.unitListIndex = newVal.unitList.findIndex(ite => ite == newVal.foodUnit)
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},
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deep: true,
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immediate: true
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},
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},
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methods: {
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// 初始化蓝牙
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openBluetoothAdapter() {
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let that = this
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if (that.isConnection != 1) return
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that.kcal = ""
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that.$store.commit('changeBluetoothValue', {
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bleTipsText: "蓝牙搜索中",
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isConnectStatus: 0,
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deviceId: "",
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serviceId: "",
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foodNotify: "",
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foodType: 1,
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foodWrite: "",
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foodWeight: 0,
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foodUnit: "g",
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unitList: that.$json.unitMinus,
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})
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that.$ble.openBluetoothAdapter()
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},
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/**
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* 获取指定服务的特征值
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*/
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getBLEDeviceCharacteristics() {
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let that = this
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uni.getBLEDeviceCharacteristics({
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deviceId: that.deviceId,
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serviceId: that.serviceId,
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success: res => {
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for (let i = 0; i < res.characteristics.length; i++) {
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let item = res.characteristics[i];
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if (item.uuid.indexOf('0000FFF2') != -1) {
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that.write = item.uuid
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} else if (item.uuid.indexOf('0000FFF1') != -1) {
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that.notify = item.uuid
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}
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}
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that.getBLECharacteristicValueChange()
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},
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fail: res => {
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that.$store.commit("changeBluetoothValue", {
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foodType: 1,
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isConnectStatus: 1,
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bleTipsText: "连接超时，点击重新连接",
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})
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console.log('获取特征值失败:', JSON.stringify(res))
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}
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})
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},
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getBLECharacteristicValueChange() {
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let that = this
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uni.notifyBLECharacteristicValueChange({
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deviceId: that.deviceId,
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serviceId: that.serviceId,
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characteristicId: that.notify,
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state: true,
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success: () => {
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that.$store.commit('changeBluetoothValue', {
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deviceId: that.deviceId,
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serviceId: that.serviceId,
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foodNotify: that.notify,
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foodWrite: that.write,
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bleTipsText: "测量中，请将食物放到秤上",
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isConnectStatus: 2
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})
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uni.onBLECharacteristicValueChange(function(res) {
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const value = res.value
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const dataView = new DataView(value)
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const header = dataView.getUint8(0)
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// MCU主动上报数据
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if (header === 0xC7) {
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const cmd = dataView.getUint8(2)
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switch (cmd) {
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case 0x02:
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const statusByte = dataView.getUint8(4)
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const isNegative = !!(statusByte & 0x80) // 最高位表示正负
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const statusType = statusByte & 0x0F // 状态类型
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// 组合24位重量值 (大端序)
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const weightValue =
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(dataView.getUint8(5) << 16) |
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(dataView.getUint8(6) << 8) |
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dataView.getUint8(7)
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// 精度和单位
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const unitByte = dataView.getUint8(8)
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const precision = (unitByte & 0xF0) >> 4 // 高4位精度
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const unitIndex = unitByte & 0x0F // 低4位单位
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// 计算实际重量
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let finalWeight = weightValue / Math.pow(10, precision)
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if (isNegative) finalWeight = -finalWeight
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that.$store.commit("changeBluetoothValue", {
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foodWeight: finalWeight,
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foodUnit: that.$json.units[unitIndex],
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foodType: statusType
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})
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console.log('重量：' + finalWeight, "状态：" + statusType)
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console.log('单位：' + that.$json.units[unitIndex])
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break
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case 0x03:
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break
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case 0x08:
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const start0 = []
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const value2 = that.$tools.ab2hex(value, "");
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const start = that.$tools.parseUnitMask(value2.substring(8,
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10), that.$json.units.slice(0, 7))
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const start1 = that.$tools.parseUnitMask(value2.substring(10,
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12), that.$json.units.slice(8, 10))
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start.push.apply(start, start1)
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if (start.length) {
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that.$json.unitMinus.forEach(item => {
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start.forEach(item2 => {
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if (item == item2) {
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start0.push(item)
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}
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})
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})
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}
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that.$store.commit("changeBluetoothValue", {
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unitList: start0.length ? start0 : that.$json
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.unitMinus
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})
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console.log("22222222222222", start, start0)
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break
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}
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}
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})
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},
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fail: res => {
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console.log('获取特征值失败:', JSON.stringify(res))
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}
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})
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},
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changleUnits(e) {
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let that = this
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let unit = that.unitA[e.detail.value]
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console.log("danwei", that.unit, unit, e.detail.value)
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if (that.isShow && that.unit != unit) {
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that.handletoggleUnit(that.$ble.unitInstruction(unit))
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}
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if (that.bleValue.serviceId == '') {
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that.unitListIndex = e.detail.value
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that.$store.commit('changeBluetoothValue', {
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foodUnit: that.unitA[e.detail.value],
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})
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}
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},
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// 下发单位
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handletoggleUnit(unit) {
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let that = this
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let checksum = 0;
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const bytes = [0xC5, 0x03, 0x05, 0x11]
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bytes[4] = unit
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for (let i = 0; i < bytes.length; i++) {
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checksum ^= bytes[i];
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}
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bytes[5] = checksum
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that.sendData(new Uint8Array(bytes).buffer)
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},
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// 清零
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handleqingling() {
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let that = this
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let str = "C503071100D0"
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let buf = new Uint8Array(str.match(/[\da-f]{2}/gi).map(function(h) {
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return parseInt(h, 16)
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}))
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that.sendData(buf.buffer)
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},
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sendData(buffer) {
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let that = this
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uni.writeBLECharacteristicValue({
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deviceId: that.deviceId,
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serviceId: that.serviceId,
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characteristicId: that.write,
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value: buffer,
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success: res => {
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console.log('下发指令成功', res.errMsg)
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},
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fail: res => {
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console.log("下发指令失败", res);
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},
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})
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},
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// 保存测量结果
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handlesub() {
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let that = this
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console.log("测量保存", that.weight, that.unit, that.kcal)
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if (Number(that.weight) > 0) {
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that.$emit("handleBle", that.weight, that.unit, that.kcal)
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} else {
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that.$tools.msg("数据异常，请清零后重新测量!")
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}
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},
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handleBack() {
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let that = this
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that.$store.commit("changeBluetoothValue", {
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bleTipsText: "连接失败，点击重新连接",
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unitList: that.$json.unitMinus,
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isConnectStatus: 1,
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foodType: 1
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})
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that.$ble.stopBluetoothDevicesDiscovery() //取消蓝牙搜索
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that.$ble.closeBLEConnection(that.deviceId)
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that.$ble.closeBluetoothAdapter()
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},
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// 添加食物
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handleAddFood() {
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uni.navigateTo({
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url: "/Food/count/search?name=早餐&time=" + this.countFoodInfo.date
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})
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},
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inputDialogToggle() {
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this.$refs.popup.open()
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},
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// 手动输入
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confirm(value) {
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let that = this
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that.$store.commit("changeBluetoothValue", {
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foodWeight: value,
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foodUnit: that.unitA[that.unitListIndex]
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})
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that.$refs.popup.close()
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},
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close() {
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this.$refs.popup.close()
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},
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},
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}
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</script>
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<style scoped lang="scss">
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image {
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width: 22px;
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height: 22px;
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}
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.more {
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padding: 6rpx 10rpx;
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border-radius: 12rpx;
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color: #fff;
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background-color: #f0ae43;
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}
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.weightPages {
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display: flex;
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flex-wrap: wrap;
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flex-direction: column;
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position: relative;
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background: #fff;
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border-radius: 20rpx;
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justify-content: space-around;
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.weight-wrap {
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display: flex;
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justify-content: center;
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align-items: center;
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background: #fff;
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color: #666;
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font-size: 16px;
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text-align: center;
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height: 60px;
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margin: 10px 0;
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.weight,
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.kcal {
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display: flex;
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justify-content: center;
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align-items: center;
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width: 70%;
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padding: 30rpx 0;
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border-radius: 20rpx;
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background-color: #F8F8F8;
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}
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.weight {
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.val {
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font-size: 54rpx;
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color: #F0AE43;
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margin: 0 !important;
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}
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.unit {
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padding: 10rpx;
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margin-left: 30rpx;
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font-size: 28rpx;
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color: #fff;
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border-radius: 8rpx;
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background-color: #F0AE43;
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}
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}
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}
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.tips {
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font-size: 24rpx;
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text-align: center;
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}
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.groupbtn {
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margin-top: 15px;
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display: flex;
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align-items: center;
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justify-content: space-between;
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.btn {
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width: 30%;
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color: $maincolor;
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text-align: center;
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height: 40px;
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line-height: 40px;
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border-radius: 10px;
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border: 1px solid $maincolor;
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background: #fff;
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margin: 0;
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box-sizing: border-box;
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}
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.addbtn {
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width: 30%;
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color: #fff;
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font-size: 45px;
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line-height: 38px;
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background: $maincolor;
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}
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}
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.table {
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width: 100%;
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font-size: 14px;
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align-items: center;
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padding: 5px 0;
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border-radius: 5px;
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display: flex;
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justify-content: space-between;
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.textTipe {
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color: #8284f0;
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display: flex;
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align-items: center;
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}
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image {
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width: 22px;
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height: 22px;
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margin-right: 5px;
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}
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}
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.image {
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width: 1120rpx;
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height: 1120rpx;
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margin: auto;
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image {
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width: 100%;
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height: 100%;
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}
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}
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.duan {
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width: fit-content;
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background: linear-gradient(-90deg, #d4f5c4, #a7d5e4 80%, );
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border-radius: 5px;
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text-align: center;
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padding: 3px 10px;
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font-size: 12px;
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}
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.tips {
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margin-top: 30rpx;
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margin-left: 30rpx;
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display: flex;
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color: #999;
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}
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}
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</style> |