SIT210/Morse_GUI at master · ShaunR1991/SIT210 · GitHub

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from Tkinter import *
from gpiozero import LED
import RPi.GPIO as GPIO
import tkMessageBox
import time
from gpiozero import LED

#Morse Timings
delayDit = 0.1
delayDah = 0.3
delayDitDah = 0.1
delayChar = 0.2
delaySpace = 0.4

#Hardware
GPIO.setmode(GPIO.BCM)
led = LED(8)

#GUI Definitions
win = Tk()
win.title("Morse Translator")

#Event Functions
def to_morse_code(text):

  #Dictionary of alphanumerics with corresponding Morse
  code = { 'a':'.-', 'b':'-...',
           'c':'-.-.', 'd':'-..', 'e':'.',
           'f':'..-.', 'g':'--.', 'h':'....',
           'i':'..', 'j':'.---', 'k':'-.-',
           'l':'.-..', 'm':'--', 'n':'-.',
           'o':'---', 'p':'.--.', 'q':'--.-',
           'r':'.-.', 's':'...', 't':'-',
           'u':'..-', 'v':'...-', 'w':'.--',
           'x':'-..-', 'y':'-.--', 'z':'--..',
           '1':'.----', '2':'..---', '3':'...--',
           '4':'....-', '5':'.....', '6':'-....',
           '7':'--...', '8':'---..', '9':'----.',
           '0':'-----', ', ':'--..--', '.':'.-.-.-',
           '?':'..--..', '/':'-..-.', '-':'-....-',
           '(':'-.--.', ')':'-.--.-', ' ':'~'}

  #Empty string to write the Morse to
  morse_code = ""

  #Iterate over input and create the morse code, adding break after each char
  for x in text:
    morse_code += code[x.lower()]
    morse_code += "|"

  return morse_code

#Represented by a .
def dit():
  led.on()
  time.sleep(delayDit)
  led.off()
  time.sleep(delayDitDah)

#Represented by a -
def dah():
  led.on()
  time.sleep(delayDah)
  led.off()
  time.sleep(delayDitDah)

#Converts text to Morse, printing the morse to the terminal and flashing the light
#Maximum 12 characters
def convert():
  text = morseInput.get()
  morseCode = str(to_morse_code(text))
  #Check if length of text is 12 or less and prompts if not
  if len(text) > 12:
    tkMessageBox.showerror("Error", "String can be no longer than 12 characters!")
  else:
    print(morseCode)
    #Iterate over the code and flash the light accordingly
    for x in morseCode:
      if x == ".":
        dit()
      if x == "-":
        dah()
      if x == "~":
        time.sleep(delaySpace)
      if x == "|":
        time.sleep(delayChar)
    morseInput.delete(0, END)

def close():
  GPIO.cleanup()
  win.destroy()

#Widgets
morseLabel = Label(win, text = "Enter word to convert to Morse Code")
morseLabel.grid(row = 1, column = 1)
morseInput = Entry(win)
morseInput.grid(row = 2, column = 1)
convertButton = Button(win, text = "Convert", command = convert)
convertButton.grid(row = 3, column = 1)
exitButton = Button(win, text = "Exit", command = close)
exitButton.grid(row = 5, column = 1)

#Exit Cleanly
win.protocol("WM_DELETE_WINDOW", close)

#Run Forever
win.mainloop()