PiPHL/morse.py

import time
import pyaudio
import wave

class Morse:

	def __init__(self, drv):
		self.drv = drv
		self.p = pyaudio.PyAudio()

	def play_letter(self, alphanum):
		self.play_sound(alphanum)
		time.sleep(0.2)
		getattr(self, 'morse_' + alphanum)()
		self.wait_letter()
		while self.stream.is_active():
			time.sleep(0.1)

		self.stream.stop_stream()
		self.stream.close()
		self.wf.close()

	def play_string(self, letters):
		for letter in letters:
			if letter == ' ':
				self.wait_word()
			else:
				print letter
				self.play_letter(letter)

	def play_sound(self, alphanum):
		self.wf = wave.open("./audio/" + alphanum.upper()+ ".wav")

		self.stream = self.p.open(
			format=self.p.get_format_from_width(self.wf.getsampwidth()),
			channels=self.wf.getnchannels(),
			rate=self.wf.getframerate(),
			output=True,
			stream_callback=self.callback)
		self.stream.start_stream()

	def callback(self, in_data, frame_count, time_info, stats):
		data = self.wf.readframes(frame_count)
		return (data, pyaudio.paContinue)

    ##################################################
	# Dahs and Dits arrived at by trial and error
	# Feel free to find one that works for you!
	# see http://www.ti.com/lit/ds/symlink/drv2605.pdf for more info!
	##################################################
	def dah(self):
		self.drv.setWaveform(0, 14)
		self.drv.setWaveform(1, 0)  
		self.drv.go()
		time.sleep(0.32)
	
	def dit(self):
		self.drv.setWaveform(0, 1)
		self.drv.setWaveform(1, 0)  
		self.drv.go()
		time.sleep(0.18)

	def wait_letter(self):
		time.sleep(0.33)

	def wait_word(self):
		time.sleep(0.45)

	def morse_a(self):
		self.dit(); self.dah();
    
	def morse_b(self):
		self.dah(); self.dit(); self.dit(); self.dit();
    
	def morse_c(self):
		self.dah(); self.dit(); self.dah(); self.dit()
    
	def morse_d(self):
		self.dah(); self.dit(); self.dit();
    
	def morse_e(self):
		self.dit();
    
	def morse_f(self):
		self.dit(); self.dit(); self.dah(); self.dit();
    
	def morse_g(self):
		self.dah(); self.dah(); self.dit();
    
	def morse_h(self):
		self.dit(); self.dit(); self.dit(); self.dit();
    
	def morse_i(self):
		self.dit(); self.dit();

	def morse_j(self):
		self.dit(); self.dah(); self.dah(); self.dah();
    
	def morse_k(self):
		self.dah(); self.dit(); self.dah();
    
	def morse_l(self):
		self.dit(); self.dah(); self.dit(); self.dit();
    
	def morse_m(self):
		self.dah(); self.dah();
    
	def morse_n(self):
		self.dah(); self.dit();
    
	def morse_o(self):
		self.dah(); self.dah(); self.dah();
    
	def morse_p(self):
		self.dit(); self.dah(); self.dah(); self.dit();
    
	def morse_q(self):
		self.dah(); self.dah(); self.dit(); self.dah();
    
	def morse_r(self):
		self.dit(); self.dah(); self.dit();
    
	def morse_s(self):
		self.dit(); self.dit(); self.dit();
    
	def morse_t(self):
		self.dah();
    
	def morse_u(self):
		self.dit(); self.dit(); self.dah();
    
	def morse_v(self):
		self.dit(); self.dit(); self.dit(); self.dah();
    
	def morse_w(self):
		self.dit(); self.dah(); self.dah();
    
	def morse_x(self):
		self.dah(); self.dit(); self.dit(); self.dah();
    
	def morse_y(self):
		self.dah(); self.dit(); self.dah(); self.dah();
    
	def morse_z(self):
		self.dah(); self.dah(); self.dit(); self.dit();
    
	def morse_1(self):
		self.dit(); self.dah(); self.dah(); self.dah(); self.dah();
    
	def morse_2(self):
		self.dit(); self.dit(); self.dah(); self.dah(); self.dah();
    
	def morse_3(self):
		self.dit(); self.dit(); self.dit(); self.dah(); self.dah();
    
	def morse_4(self):
		self.dit(); self.dit(); self.dit(); self.dit(); self.dah();
    
	def morse_5(self):
		self.dit(); self.dit(); self.dit(); self.dit(); self.dit();
    
	def morse_6(self):
		self.dah(); self.dit(); self.dit(); self.dit(); self.dit();
	
	def morse_7(self):
		self.dah(); self.dah(); self.dit(); self.dit(); self.dit();
    
	def morse_8(self):
		self.dah(); self.dah(); self.dah(); self.dit(); self.dit();
    
	def morse_9(self):
		self.dah(); self.dah(); self.dah(); self.dah(); self.dit();
    
	def morse_0(self):
		self.dah(); self.dah(); self.dah(); self.dah(); self.dah();