from microbit import *
# Morse Code Text Sender.  G3RSP December 2016
# Version 2
# Key out on pin 1
# Speed volts on pin 2 
# textcounter = message string index
# char = ASCII character to be sent
# mc = morse "code" integer string
# elcounter = mc index
lookup = {
 "a": [1, 3],
 "b": [3, 1, 1, 1],
 "c": [3, 1, 3, 1],
 "d": [3, 1, 1],
 "e": [1],
 "f": [1, 1, 3, 1],
 "g": [3, 3, 1],
 "h": [1, 1, 1, 1],
 "i": [1, 1],
 "j": [1, 3, 3, 3],
 "k": [3, 1, 3],
 "l": [1, 3, 1, 1],
 "m": [3, 3],
 "n": [3, 1],
 "o": [3, 3, 3],
 "p": [1, 3, 3, 1],
 "q": [3, 3, 1, 3],
 "r": [1, 3, 1],
 "s": [1, 1, 1],
 "t": [3],
 "u": [1, 1, 3],
 "v": [1, 1, 1, 3],
 "w": [1, 3, 3],
 "x": [3, 1, 1, 3],
 "y": [3, 1, 3, 3],
 "z": [3, 3, 1, 1],
 "1": [1, 3, 3, 3, 3],
 "2": [1, 1, 3, 3, 3],
 "3": [1, 1, 1, 3, 3],
 "4": [1, 1, 1, 1, 3],
 "5": [1, 1, 1, 1, 1],
 "6": [3, 1, 1, 1, 1],
 "7": [3, 3, 1, 1, 1],
 "8": [3, 3, 3, 1, 1],
 "9": [3, 3, 3, 3, 1],
 "0": [3, 3, 3, 3, 3],
 "/": [3, 1, 1, 3, 1],
 ".": [1, 3, 1, 3, 1, 3],
 ",": [3, 3, 1, 1, 3, 3],
 "?": [1, 1, 3, 3, 1, 1],
 " ": [0],
 "(": [3, 1, 3, 3, 1],
 ")": [3, 1, 3, 3, 1, 3],
 "=": [3, 1, 1, 1, 3],
 "'": [1, 3, 3, 3, 3, 1]
 }


def decode(buffer):
    return lookup.get(buffer)


def send_text():
    textcounter = 0
    while textcounter < len(text):
        char = text[textcounter]
        buffer = char
        mc = decode(buffer)
        elcounter = 0
        speed = pin2.read_analog()
        speed = speed/4
        textcounter = textcounter + 1
        sleep(speed * 2)
        while elcounter < len(mc):
                pin1.write_digital(1)
                sleep(mc[elcounter] * speed)
                pin1.write_digital(0)
                sleep(speed)
                elcounter = elcounter + 1


msg1 = "abcdefghijklmnopqrstuvwxyz1234567890(=).,/?"
msg2 = "the quick brown fox jumped over the lazy dog's back   "

pin1.write_digital(0)
while True:
    if button_a.is_pressed():
        text = msg1
        send_text()
    elif button_b.is_pressed():
            text = msg2
            send_text()
            send_text()