# MCG2x.py
#
# A simple Morse Code Generator and tutor.
# (C)2010-2012, B.Walker, G0LCU.
#
# A DEMO fun Python program to generate the standard Morse Code tones
# out through the computer's speakers.
#
# Written in such a way that youngsters can understand what is going on.
#
# This is for Python Version 3.x.x using AT LEAST PClinuxOS 2009 and
# Debian 6.0.0...
#
# It is assumed that /dev/audio exists; if NOT, then install oss-compat
# from the distro`s repository.
#
# Ensure the sound system is not already in use.
#
# It is also asumed that the ?nix command "clear" is available.
#
# Copy the file to the Lib folder(/drawer/directory) or where the modules
# reside as "MCG2x.py"...
#
# For a quick way to run just use at the ">>>" prompt:-
#
# >>> import MCG2x<RETURN/ENTER>
#
# And away we go...
#
# Once running just press <ENTER/RETURN> for a random character or INPUT
# any single STANDRAD ASCII character the <RETURN/ENTER> to practice specific
# characters. Type EXIT or QUIT<RETURN/ENTER> to quit...
# Any __unknown__ character will generate the "?" character and display the
# this character along with the Morse Code tones for it...
# Read the Python code below for more information...
#
# Enjoy finding simple solutions to often VERY difficult questions... ;o)
# The standard imports required...
import os
import time
import random
import string
def main():
# Make variables global, my choice... ;o)
global delay
global text
global ascii_num
global dah_dit
global morse_code
global count
# Allocate start values...
delay=225
text="(C)2010-2012, B.Walker, G0LCU..."
ascii_num=63
dah_dit=0
# The code below is the "?" character for any unknown character entered.
morse_code="..--.."
count=0
while 1:
# Enter a simple loop...
# A basic ?nix type screen clear command...
count=os.system("clear")
# A simple user screen, QUIT or EXIT<RETURN/ENTER> to STOP...
print "\nA simple Morse Code Generator and tutor.\n"
print "(C)2010-2012, B.Walker, G0LCU.\n"
print "It has a fixed speed of around 8 words per minute...\n"
text=raw_input("Press <RETURN/ENTER> to continue:- ")
text=string.upper(text)
if text=="QUIT" or text=="EXIT": break
# Don't allow any errors.
if len(text)>=2: text=""
if text=="": ascii_num=int(random.random()*43)+48
if text!="": ascii_num=ord(text)
# This is the "?" character...
if ascii_num>=58 and ascii_num<=64:
morse_code="..--.."
ascii_num=63
if ascii_num<=47 or ascii_num>=91:
morse_code="..--.."
ascii_num=63
# Now to generate the relevant code according to the correct ASCII
# character entered.
if ascii_num==48: morse_code="-----"
if ascii_num==49: morse_code=".----"
if ascii_num==50: morse_code="..---"
if ascii_num==51: morse_code="...--"
if ascii_num==52: morse_code="....-"
if ascii_num==53: morse_code="....."
if ascii_num==54: morse_code="-...."
if ascii_num==55: morse_code="--..."
if ascii_num==56: morse_code="---.."
if ascii_num==57: morse_code="----."
if ascii_num==65: morse_code=".-"
if ascii_num==66: morse_code="-..."
if ascii_num==67: morse_code="-.-."
if ascii_num==68: morse_code="-.."
if ascii_num==69: morse_code="."
if ascii_num==70: morse_code="..-."
if ascii_num==71: morse_code="--."
if ascii_num==72: morse_code="...."
if ascii_num==73: morse_code=".."
if ascii_num==74: morse_code=".---"
if ascii_num==75: morse_code="-.-"
if ascii_num==76: morse_code=".-.."
if ascii_num==77: morse_code="--"
if ascii_num==78: morse_code="-."
if ascii_num==79: morse_code="---"
if ascii_num==80: morse_code=".--."
if ascii_num==81: morse_code="--.-"
if ascii_num==82: morse_code=".-."
if ascii_num==83: morse_code="..."
if ascii_num==84: morse_code="-"
if ascii_num==85: morse_code="..-"
if ascii_num==86: morse_code="...-"
if ascii_num==87: morse_code=".--"
if ascii_num==88: morse_code="-..-"
if ascii_num==89: morse_code="-.--"
if ascii_num==90: morse_code="--.."
# Now print the result(s)...
print "\nASCII character "+chr(ascii_num)+"...\n"
# Note the exclamation marks are NOT an error!
print "Morse Code! "+morse_code+" !\n"
# Open the "/dev/audio" device for writing...
audio=open("/dev/audio", "wb")
for dah_dit in range(0,len(morse_code),1):
if morse_code[dah_dit]=="-": delay=225
if morse_code[dah_dit]==".": delay=75
# Play a crude sine-wave note at 1KHz of length "delay"...
for count in range(0,delay,1):
audio.write(chr(15)+chr(45)+chr(63)+chr(45)+chr(15)+chr(3)+chr(0)+chr(3))
# Add a gap roughly the same as a "dit" and NOT closing the audio device!
for count in range(0,75,1):
audio.write(chr(0)+chr(0)+chr(0)+chr(0)+chr(0)+chr(0)+chr(0)+chr(0))
# Ensure that the audio device is closed after each character!
audio.close()
# Add a short delay to see the code on screen before starting again.
time.sleep(1)
main()
# End of MCG2x.py DEMO...
# Enjoy finding simple solutions to often VERY difficult questions... ;o)
Diff to Previous Revision
--- revision 1 2012-01-09 18:53:31
+++ revision 2 2012-01-09 22:51:12
@@ -53,7 +53,7 @@
# Allocate start values...
delay=225
- text="(C)2011, B.Walker, G0LCU..."
+ text="(C)2010-2012, B.Walker, G0LCU..."
ascii_num=63
dah_dit=0
# The code below is the "?" character for any unknown character entered.
@@ -66,7 +66,7 @@
count=os.system("clear")
# A simple user screen, QUIT or EXIT<RETURN/ENTER> to STOP...
print "\nA simple Morse Code Generator and tutor.\n"
- print "(C)2010-2011, B.Walker, G0LCU.\n"
+ print "(C)2010-2012, B.Walker, G0LCU.\n"
print "It has a fixed speed of around 8 words per minute...\n"
text=raw_input("Press <RETURN/ENTER> to continue:- ")
text=string.upper(text)
