MorseCodeCreator.py

from machine import Pin, PWM
from time import sleep
# Create a dictionary of Morse Code. s is for Short (or dots), l is for Long (or dashes)
MorseCodes = {
    ' ': '',
    'a': 'sl',
    'b': 'lsss',
    'c': 'lsls',
    'd': 'lss',
    'e': 's',
    'f': 'ssls',
    'g': 'lls',
    'h': 'ssss',
    'i': 'ss',
    'j': 'slll',
    'k': 'lsl',
    'l': 'slss',
    'm': 'll',
    'n': 'ls',
    'o': 'lll',
    'p': 'slls',
    'q': 'llsl',
    'r': 'sls',
    's': 'sss',
    't': 'l',
    'u': 'ssl',
    'v': 'sssl',
    'w': 'sll',
    'x': 'lssl',
    'y': 'lsll',
    'z': 'llss',
    '1': 'sllll',
    '2': 'sslll',
    '3': 'sssll',
    '4': 'ssssl',
    '5': 'sssss',
    '6': 'lssss',
    '7': 'llsss',
    '8': 'lllss',
    '9': 'lllls',
    '0': 'lllll'}

button = Pin(10, Pin.IN, Pin.PULL_UP)
shortled = Pin(11, Pin.OUT)
longled = Pin(12, Pin.OUT)
speaker = PWM(Pin(13))

fast = 0.1
slow = 0.2

sound = True
light = True
pitch = 600
volume = 1500
speaker.freq(600) #pitch of sound. Higher number is higher pitch

shortled.low()
longled.low()

def letterlookup(stringvalue):
    for k in MorseCodes:
        if MorseCodes[k] == stringvalue:
            return k
    return " "

def blinkletter(letter):

    if letter != "":
        currentletter = MorseCodes[letter]
    if letter == " ":
        sleep(0.6)
        return
    
    print(letter + " : " + currentletter)
    for c in currentletter:
        if (c == 'l'):
            blinkspeed = slow
        if (c =='s'):
            blinkspeed = fast      
        if light : shortled.high()
        if sound :
            speaker.freq(pitch)
            speaker.duty_u16(volume)
        sleep(blinkspeed)
        if light : shortled.low()
        if sound : speaker.duty_u16(0)
        sleep(blinkspeed)
        
    sleep(0.6)
    
def playmessage(message):           
    for c in message:
        blinkletter(str.lower(c))
        
def recordmessage():
    print("start typing your Morse Code message! Wait 5 seconds to exit")
    TimeCount = 0
    DelayCount = 0
    CurrentLetter = ""
    CurrentWord = ""
    PreviousStatus = 1
    while True:
        if button.value() == 0: #Button being pressed
            DelayCount = 0
            TimeCount += 1
            if TimeCount <= 15: #Its a short press!
                shortled.high()
                longled.low()
                
            elif TimeCount > 15: #Its a Long Press!
                shortled.low()
                longled.high()
            
            if PreviousStatus != button.value():
                speaker.duty_u16(1500)
                
        elif button.value() == 1: #Button not being pressed
            speaker.duty_u16(0)
            shortled.low()
            longled.low()
            if TimeCount > 0:
                if TimeCount <= 15:
                    CurrentLetter = CurrentLetter + "s"
                elif TimeCount > 15:
                    CurrentLetter = CurrentLetter + "l"
            TimeCount = 0
            DelayCount = DelayCount + 1
            if DelayCount > 60:
                if CurrentLetter != "":
                    CurrentWord = CurrentWord + letterlookup(CurrentLetter)
                    CurrentLetter = ""
                    print(CurrentWord)
            if DelayCount == 300: #Add a space
                CurrentWord = CurrentWord + " "
            if DelayCount == 500:
                print("You recorded " + CurrentWord)
                print("Exiting recording mode")
                return
        sleep(0.01)