ESP8266 WIFI(6) -Using Python to control LED ON/OFF

這篇介紹如何用Python 語言透過ESP8266 Wifi連線去控制Arduino 端的LED.

<圖一概念圖>

<圖二> 下圖是Python GUI 程式執行時,及Arduino 端LED實際運作狀態.

              當按下分別對應的LED按鈕後,LED即會 ON/OFF 動作. 

有關ESP8266 請參考之前相關文章:

ESP8266 Wifi (1)---Connected with PC.

http://arbu00.blogspot.tw/2015/12/esp8266-wifi-1-connected-with-pc.html

ESP8266 WIFI(2) -update firmware and modify baud rate.

http://arbu00.blogspot.tw/2015/12/esp8266-wifi2-update-firmware-and.html

ESP8266 WIFI(3) -Connected with Arduino

http://arbu00.blogspot.tw/2015/12/esp8266-wifi3-connected-with-arduino.html

ESP8266 WIFI(4) -Soil_Humidity sensor

http://arbu00.blogspot.tw/2015/12/esp8266-wifi4-soilhumidity-sensor.html

ESP8266 WIFI(5) -Set LED ON/OFF from WEB browser

有關Python & Arduino 請參考之前相關文章:

http://arbu00.blogspot.tw/2016/09/esp8266-wifi5-set-led-onoff-from-web.html

使用python與arduino連接控制LED

http://arbu00.blogspot.tw/2016/07/pythonarduinoled.html

使用python與arduino連接控制LED之GUI圖形介面

http://arbu00.blogspot.tw/2016/07/pythonarduinoledgui.html

使用Python透過Bluetooth與Arduino連結

http://arbu00.blogspot.tw/2016/07/pythonbluetootharduino.html

影音筆記完整示範說明:







底下是本範例的Python &Arduino程式碼.

<Python source code>

# -*- coding:utf-8 -*-
from time import sleep
from msvcrt import getch
import tkinter
import socket

##===When button A be pressed then Send 'a' to arduino============
def Led_A_ON():
 #Show to LabelA----------------
 LabelA.config(text="Turn ON RED LED")
 LabelA.update_idletasks()
 Tkwindow.update()
 try:          # 例外處理
  ip = '192.168.11.17'     # 連線IP     
  port =9000            # 連線通訊埠
  Senddata ="Set LEDPIN:D101"     # 取得傳送資料
  client = socket.socket(socket.AF_INET, socket.SOCK_STREAM)  # 建立socket物件
  client.connect((ip,port))      # 連線服務端
  client.send(str(Senddata).encode())       # 傳送資料
  client.close()        # 關閉連線
 except:
  LabelA.config(text="傳送錯誤\n")
  LabelA.update_idletasks()
  Tkwindow.update()
##====================================
##===When button A be pressed then Send 'a' to arduino============
def Led_B_ON():
 #Show to LabelA----------------
 LabelA.config(text="Turn ON GREEN LED")
 LabelA.update_idletasks()
 Tkwindow.update()
 try:          # 例外處理
  ip = '192.168.11.17'     # 連線IP     
  port =9000            # 連線通訊埠
  Senddata ="Set LEDPIN:D111"     # 取得傳送資料
  client = socket.socket(socket.AF_INET, socket.SOCK_STREAM)  # 建立socket物件
  client.connect((ip,port))      # 連線服務端
  client.send(str(Senddata).encode())       # 傳送資料
  client.close()        # 關閉連線
 except:
  LabelA.config(text="傳送錯誤\n")
  LabelA.update_idletasks()
  Tkwindow.update()
##====================================
def Led_C_ON():
 #Show to LabelA----------------
 LabelA.config(text="Turn ON BLUE LED")
 LabelA.update_idletasks()
 Tkwindow.update()
 try:          # 例外處理
  ip = '192.168.11.17'     # 連線IP     
  port =9000            # 連線通訊埠
  Senddata ="Set LEDPIN:D121"     # 取得傳送資料
  client = socket.socket(socket.AF_INET, socket.SOCK_STREAM)  # 建立socket物件
  client.connect((ip,port))      # 連線服務端
  client.send(str(Senddata).encode())       # 傳送資料
  client.close()        # 關閉連線
 except:
  LabelA.config(text="傳送錯誤\n")
  LabelA.update_idletasks()
  Tkwindow.update()
##====================================
def Led_A_OFF():
 #Show to LabelA----------------
 LabelA.config(text="Turn OFF RED LED ")
 LabelA.update_idletasks()
 Tkwindow.update()
 try:          # 例外處理
  ip = '192.168.11.17'     # 連線IP     
  port =9000            # 連線通訊埠
  Senddata ="Set LEDPIN:D100"     # 取得傳送資料
  client = socket.socket(socket.AF_INET, socket.SOCK_STREAM)  # 建立socket物件
  client.connect((ip,port))      # 連線服務端
  client.send(str(Senddata).encode())       # 傳送資料
  client.close()        # 關閉連線
 except:
  LabelA.config(text="傳送錯誤\n")
  LabelA.update_idletasks()
  Tkwindow.update()
##====================================
def Led_B_OFF():
 #Show to LabelA----------------
 LabelA.config(text="Turn OFF GREEN LED")
 LabelA.update_idletasks()
 Tkwindow.update()
 try:          # 例外處理
  ip = '192.168.11.17'     # 連線IP     
  port =9000            # 連線通訊埠
  Senddata ="Set LEDPIN:D110"     # 取得傳送資料
  client = socket.socket(socket.AF_INET, socket.SOCK_STREAM)  # 建立socket物件
  client.connect((ip,port))      # 連線服務端
  client.send(str(Senddata).encode())       # 傳送資料
  client.close()        # 關閉連線
 except:
  LabelA.config(text="傳送錯誤\n")
  LabelA.update_idletasks()
  Tkwindow.update()
##====================================
def Led_C_OFF():
 #Show to LabelA----------------
 LabelA.config(text="Turn OFF BLUE LED ")
 LabelA.update_idletasks()
 Tkwindow.update()
 try:          # 例外處理
  ip = '192.168.11.17'     # 連線IP     
  port =9000            # 連線通訊埠
  Senddata ="Set LEDPIN:D120"     # 取得傳送資料
  client = socket.socket(socket.AF_INET, socket.SOCK_STREAM)  # 建立socket物件
  client.connect((ip,port))      # 連線服務端
  client.send(str(Senddata).encode())       # 傳送資料
  client.close()        # 關閉連線
 except:
  LabelA.config(text="傳送錯誤\n")
  LabelA.update_idletasks()
  Tkwindow.update()
##====================================

def All_Exit():
 print("Exit.....")
 #Show to LabelA----------------
 LabelA.config(text="Exit.....")
 LabelA.update_idletasks()
 Tkwindow.update()
 sleep(1)
 Tkwindow.destroy() # Kill the root window! 

##------------------------------------------------------

Tkwindow=tkinter.Tk()
Tkwindow.title("Using Python to Control Arduino LED ON/OFF")
Tkwindow.minsize(700,400)
LabelA=tkinter.Label(Tkwindow,
        bg='black',
        fg='LightGreen',
        text="Start...",
        width=100,
        height=15,
        justify=tkinter.LEFT
        )
LabelA.pack(side=tkinter.TOP)
buttonA=tkinter.Button(Tkwindow,
         anchor=tkinter.S,
         text="LED_RED ON",
         bg='PaleVioletRed',
         fg='GhostWhite',
         width=12,
         height=1,
         command=Led_A_ON)
buttonA.pack(side=tkinter.LEFT)
buttonB=tkinter.Button(Tkwindow,
         anchor=tkinter.S,
         text="LED_GREEN ON",
         bg='LightGreen',
         fg='GhostWhite',
         width=12,
         height=1,
         command=Led_B_ON)
buttonB.pack(side=tkinter.LEFT)
buttonC=tkinter.Button(Tkwindow,
         anchor=tkinter.S,
         text="LED_BLUE ON",
         bg='LightBlue',
         fg='GhostWhite',
         width=12,
         height=1,
         command=Led_C_ON)
buttonC.pack(side=tkinter.LEFT)

buttonD=tkinter.Button(Tkwindow,
         anchor=tkinter.S,
         text="LED_RED OFF",
         bg='PaleVioletRed',
         fg='Black',
         width=12,
         height=1,
         command=Led_A_OFF)
buttonD.pack(side=tkinter.LEFT)
buttonE=tkinter.Button(Tkwindow,
         anchor=tkinter.S,
         text="LED_GREEN OFF",
         bg='LightGreen',
         fg='Black',
         width=12,
         height=1,
         command=Led_B_OFF)
buttonE.pack(side=tkinter.LEFT)
buttonF=tkinter.Button(Tkwindow,
         anchor=tkinter.S,
         text="LED_BLUE OFF",
         bg='LightBlue',
         fg='Black',
         width=12,
         height=1,
         command=Led_C_OFF)
buttonF.pack(side=tkinter.LEFT)

buttonEnd=tkinter.Button(Tkwindow,
         anchor=tkinter.S,
         text="Exit",
         bg='Crimson',
         fg='Black',
         width=12,
         height=1,
         command=All_Exit)
buttonEnd.pack(side=tkinter.RIGHT)


Tkwindow.mainloop() 

<Arduino 完整範例 source code>
https://github.com/Ashing00/esp8266/blob/master/esp8266_led.ino


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