# _*_ coding:utf-8 import serial
import time
import traceback
import pycurl
import requests
import io
import json
import base64ser = serial.Serial("/dev/ttyAMA0",115200)
print(ser.name)
print(ser.port)f=Nonedef main():print("main:")res0 = setResolution()res0 = reset()print(res0)while True: try:res1=stopCurrent()print(res1)res2=getCurrentLength()print(res2)hBit = res2[7]<<8lBit = res2[8]imageSize = hBit+lBit;dataSize = imageSize+10print(imageSize)res3=getCurrentImage(res2[7],res2[8],dataSize)imageData = res3[5:(dataSize-5)]f = open('/home/pi/Camera/image.jpg','wb')for i in range(len(imageData)):f.write(chr(imageData[i]))f.closeresumCurrent()upload()except Exception:print(traceback.print_exc())def setResolution():bitarray = [0x56,0x00,0x31,0x05,0x04,0x01,0x00,0x19,0x11]ser.write(bitarray)time.sleep(0.1)index=0resp=[]while True:s = ser.read()if s!=None:index = index+1resp.append(ord(s))if index>=5:break;return resp
def setCompress():bitarray = [0x56,0x00,0x31,0x05,0x01,0x01,0x12,0x04,0x36]ser.write(bitarray)time.sleep(0.1)index=0resp=[]while True:s = ser.read()if s!=None:index = index+1resp.append(ord(s))if index>=5:break;return resp
def resumCurrent():bitarray = [0x56,0x00,0x36,0x01,0x03]ser.write(bitarray)time.sleep(0.1)index=0resp=[]while True:s = ser.read()if s!=None:index = index+1#print(s)             resp.append(ord(s))if index>=5:break;return resp
def stopCurrent():bitarray = [0x56,0x00,0x36,0x01,0x00]ser.write(bitarray)time.sleep(0.1)index=0resp=[]while True:s = ser.read()if s!=None:index = index+1#print(s)             resp.append(ord(s))if index>=5:break;return respdef getCurrentLength():bitarray = [0x56,0x00,0x34,0x01,0x00]ser.write(bitarray)time.sleep(0.1)index=0resp=[]while True:s = ser.read()if s!=None:index = index+1#print(s)             resp.append(ord(s))if index>=9:break;return resp
def getCurrentImage(hBit,lBit,dataSize):bitarray = [0x56,0x00,0x32,0x0C,0x00,0x0A,0x00,0x00,0x00,0x00,0x00,0x00,chr(hBit),chr(lBit),0x10,0x00]ser.write(bitarray)time.sleep(0.1)index=0resp=[]f=io.BytesIO()while True:s = ser.read()if s!=None:index = index+1#print(s)             resp.append(ord(s))#f.write(s) if index>=dataSize:break;return resp
def reset():bitarray = [0x56,0x00,0x26,0x00]ser.write(bitarray)time.sleep(2)index=0resp=[]len = ser.inWaiting()s = ser.read(len)resp.append(s)return resp
def upload(device=27390392):url='http://api.heclouds.com/bindata'headers={"api-key":"*******","Content-Type":"image/jpg"}queryString = {"device_id":str(device),"datastream_id":"picture"}with open('/home/pi/Camera/image.jpg','rb') as f:base64_data = base64.b64encode(f.read())r = requests.post(url,params=queryString,headers=headers,data=base64_data)print(r.text)return fif __name__ == '__main__':try:main()except KeyboardInterrupt:if ser != None:ser.close()except Exception:print(traceback.print_exc())

<view class="weui-flex justify"> <button bindtap="receivePic" class="weui_btn mini_btn" style="justify-content: center;" stype="plain-default" size="mini">刷图</button> </view> <view style="height:20px;" > </view> <view style="weui-flex justify;width:100%" > <image src='{{userImageBase64}}'  mode="widthFix" style="width:100%;background-color: #66ffff;"/> </view>

const util = require('../../utils/util.js')Page({data: {device: {},userImageBase64:{},},onLoad: function (options) {var _this = this;console.log(options.device_id);//查询该设备的详细信息     wx.request({url: 'https://api.heclouds.com/devices/' + options.device_id, //仅为示例，并非真实的接口地址       header: {'content-type': 'application/json', // 默认值'api-key': '**'},success: function (res) {console.log(res.data),//执行this.setData方法，就会渲染视图数据           _this.setData({device: res.data.data}),//修改标题栏           wx.setNavigationBarTitle({ title: _this.data.device.title })}});receivePic:function(){var _this = this;wx.request({url: 'https://api.heclouds.com/devices/' + this.data.device.id + '/datapoints',header: {'content-type': 'application/json', // 默认值'api-key': '**'},success: function (res) {var __this = _this;console.log("PIC")var index = res.data.data.datastreams[1].datapoints[0].value.index;console.log(res);console.log(index)wx.request({url: 'https://api.heclouds.com/bindata/'+index,header: {'content-type': 'image/jpg', // 默认值'api-key': '**'},success: function (res) {console.log("PIC")var image = res.data; //var a = image.split('');             console.log(image);__this.setData({ userImageBase64: "data:image/png;base64," + image });}});}});},})