Operate ECHONET Lite appliances with Python

Introduction

I will post the sample code of home appliance operation by ECHONET Lite with python.

• ECHONET Lite (ISO / IEC 14543-4-3) international standard

What i want to do

1. ON / OFF control of home appliances
2. Acquisition of the operating status of home appliances

The Ruby version can be found in Controlling ECHONET Lite Home Appliances with Ruby, so please have a look there.

• The following sample program targets air purifiers. If you want to control the air conditioner and lighting, please refer to the above Ruby version for details.

environment

● Air purifier (compatible with ECHONET Lite) 　⇒　Sharp KI-EX100 ●　Windows 7 ●　Python 2.7.11

Turn on the operating state

ip = Please use the IP of your device for the "192.168. ○. ○" part.

ON_send.py

# coding: utf-8
import socket

ip = "192.168.2.166"
ECHONETport = 3610

message = "1081000005FF010135016101800130"
msg = message.decode("hex")

sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
sock.sendto(msg, (ip, ECHONETport))

Turn off the operating state

OFF_send.py

# coding: utf-8
import socket

ip = "192.168.2.166"
ECHONETport = 3610

message = "1081000005FF010135016101800131"
msg = message.decode("hex")

sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
sock.sendto(msg, (ip, ECHONETport))

What is different in the above program Only in the message variable on the 7th line

When ON message = "1081000005FF010135016101800130"

When OFF message = "1081000005FF010135016101800131"

Check the operating status

With a program that sends a request for the operating status of home appliances The explanation is divided into programs that receive the operating status from home appliances.

Send program

get_send.py

# coding: utf-8
import socket

ip = "192.168.2.166"
ECHONETport = 3610

message = "1081000005FF0101350162018000"
msg = message.decode("hex")

sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
sock.sendto(msg, (ip, ECHONETport))

Receiving program

receive.py

# coding: utf-8
import socket

port = 3610
bufsize = 4096

sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
sock.bind(("0.0.0.0", port))
data = sock.recvfrom(bufsize)
print data[0].encode('hex')
print data
sock.close()

If you can receive it well, the following message should be displayed The correct information is on the first line. The second line is not encoded in hexadecimal and will not be displayed correctly. I just wanted to tell you something useful because recvform tells you the IP of the source. This time I put the 11th line of the sample code for testing, but please delete it because it is unnecessary code.

By the way, the 9th line of the sample code

data[0].endode("hex")

Seems to work only with python2 series. So I haven't tried 3 series, so please find and execute the encoding method to make it a hexadecimal number by yourself.

If you don't understand what you are saying, such as 3 or 2, execute the following at the command prompt or terminal.

$ python --version

The display is In the case of python 2. ○. ○, it is 2 system In the case of python 3. ○. ○, it is 3 series