基于阿里云端SDK-python的开发，控制设备的LED

基于阿里云端SDK-python的开发

这里是配合上一批文章，在上文中ESP8266作为设备，订阅了DATA这个topic，本文章将通过实现通过该topic发送数据给ESP8266 来控制LED的熄灭！

SDK的开发及下载参考https://help.aliyun.com/document_detail/42700.html?spm=a2c4g.11186623.6.697.59a036dbksZ9ok

主要提供4个版本的，这里我们使用python来开发该云端。
代码如下，添加了2个按键，来控制LED的熄灭，实际操作的时候会看到ESP8266上的LED对应的状态切换

from aliyunsdkcore import client
from aliyunsdkiot.request.v20180120 import RegisterDeviceRequest
from aliyunsdkiot.request.v20180120 import PubRequest
import base64 
import time

import Tkinter
import tkMessageBox

#init sdk
accessKeyId = 'yourselfkeyid'    #换成自己的
accessKeySecret = 'yourselfsecret'   #换成自己的
clt = client.AcsClient(accessKeyId, accessKeySecret, 'cn-shanghai')
LED_ON=base64.encodestring('LED_ON')       #your send out data here
LED_OFF=base64.encodestring('LED_OFF')       #your send out data here


##request set
request = PubRequest.PubRequest()
request.set_accept_format('json') 
request.set_ProductKey('a19bI5MaWV6')      #换成自己的productkey
request.set_TopicFullName('/a19bI5MaWV6/ESP01/DATA')     #换成自己的topic
request.set_Qos(0)


#FROUNT PANEL

top = Tkinter.Tk()
def LED_ON_Back():
   tkMessageBox.showinfo( "1", "LED_ON")
   request.set_MessageContent(LED_ON)
   result = clt.do_action_with_exception(request)
   print 'result : ' + result  
def LED_OFF_Back():
   tkMessageBox.showinfo( "1", "LED_OFF")
   request.set_MessageContent(LED_OFF)
   result = clt.do_action_with_exception(request)
   print 'result : ' + result  
 
B = Tkinter.Button(top, text ="LED_ON", command = LED_ON_Back)
C = Tkinter.Button(top, text ="LED_OFF", command = LED_OFF_Back)
B.pack()
C.pack()
top.mainloop()

运行之后界面如下