ajout commentaires
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Jérémie DUCASTEL
@ -6,30 +6,25 @@ sur raspberry pi + sense hat
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principe : saisie d'un message en morse via le joystick de la sense hat
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la grille LED permet d'avoir un retour / analyse de ce qui est saisi
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une fois le message construit, transmission via la matrice LED
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utilisation du joystick de la sense hat
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gauche = saisir un point
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droit = saisir un trait
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haut = valider (selon le contexte : lettre, mot, message), ajouter un espace
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bas = corriger / annuler la dernière entrée
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haut = saisir un point
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bas = saisir un trait
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droite = valider (selon le contexte : lettre, mot, message), ajouter un espace
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gauche = corriger / annuler la dernière entrée
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utilise la lib morse-talk pour le decodage / encodage
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utilise la lib morse-talk pour le decodage / encodage. pour l'installation :
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$ pip install morse-talk
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utilisation :
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$ python sense_morse.py
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"""
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from sense_hat import SenseHat, ACTION_PRESSED, ACTION_HELD, ACTION_RELEASED
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from signal import pause
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import time, morse_talk
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DOT = '.'
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DASH = '-'
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PAUSE = ' '
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END_CHAR = ' '
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END_WORD = ' '
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class MorseSenseHatKeyer:
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green = [0, 255, 0]
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@ -38,16 +33,19 @@ class MorseSenseHatKeyer:
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def __init__(self):
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self.sense = SenseHat()
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# association des evenements générés par le joystick de la SenseHat
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# aux méthodes de traitement internes
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self.sense.stick.direction_up = self.pushed_up
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self.sense.stick.direction_down = self.pushed_down
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self.sense.stick.direction_left = self.pushed_left
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self.sense.stick.direction_right = self.pushed_right
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self.sense.stick.direction_any = self.refresh
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self.message_ascii = ''
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self.current_morse_char = ''
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# initalisation des variables de traitement
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self.message_ascii = '' # message construit sous forme ASCII
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self.current_morse_char = '' # caractère morse en cours de construction
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def pushed_left(self, event):
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""" correction """
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""" correction (réinitialise caractère courant) """
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# correction
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if event.action != ACTION_RELEASED:
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self.current_morse_char = ''
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@ -62,48 +60,49 @@ class MorseSenseHatKeyer:
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self.validate_char()
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def pushed_down(self, event):
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""" ajout trait """
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if event.action == ACTION_HELD:
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self.show_dash()
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if event.action == ACTION_RELEASED:
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self.add_dash()
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""" ajout d'un trait """
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if event.action == ACTION_HELD: # tant que le bouton est pressé
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self.show_dash() # affichage d'un trait
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if event.action == ACTION_RELEASED: # au relachement
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self.add_dash() # ajout du trait si possible
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def pushed_up(self, event):
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""" ajout point """
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if event.action == ACTION_HELD:
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self.show_dot()
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if event.action == ACTION_HELD: # tant que le bouton est pressé
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self.show_dot() # affichage d'un point
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if event.action == ACTION_RELEASED:
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self.add_dot()
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self.add_dot() # ajout du point si possible
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def show_dot(self, rgb=None):
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# affichage d'un point sur la matrice LED
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rgb = rgb or [150, 150, 150]
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self.sense.clear()
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for x in range(3, 5):
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for y in range(3, 5):
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self.sense.set_pixel(x, y, rgb)
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# time.sleep(duration)
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def show_dash(self, rgb=None):
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# affichage d'un trait sur la matrice LED
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rgb = rgb or [150, 150, 150]
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self.sense.clear()
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for x in range(1, 7):
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for y in range(3, 5):
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self.sense.set_pixel(x, y, rgb)
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# time.sleep(duration)
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def refresh(self, event):
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pass
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# self.sense.clear()
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def show_char(self, char, rgb=None):
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""" affiche un caractère """
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""" affiche un caractère dans la couleur définie (gris par defaut)"""
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rgb = rgb or [150, 150, 150]
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self.sense.clear()
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self.sense.show_letter(char, rgb)
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def add_dot(self):
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""" ajout d'un point au caractère courant """
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""" ajout d'un point au caractère courant
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tant que le caractère courant reste interpretable
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sinon, affichage d'une erreur et reinitialise le caractère courant """
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try:
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self.current_morse_char += '.'
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char = morse_talk.decode(self.current_morse_char)
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@ -113,7 +112,9 @@ class MorseSenseHatKeyer:
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self.current_morse_char = ''
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def add_dash(self):
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""" ajout d'un trait au caractère courant """
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""" ajout d'un trait au caractère courant
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tant que le caractère courant reste interpretable
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sinon, affichage d'une erreur et reinitialise le caractère courant """
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self.current_morse_char += '-'
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try:
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char = morse_talk.decode(self.current_morse_char)
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@ -122,13 +123,15 @@ class MorseSenseHatKeyer:
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self.show_char('X', self.red)
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self.current_morse_char = ''
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def show_error(self):
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pass
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def reset_char(self):
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""" annule le caractère courant """
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pass
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self.current_morse_char = ''
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def validate_char(self):
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""" valide la lettre courante """
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""" valide la lettre courante, et donne un retour visuel """
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char = morse_talk.decode(self.current_morse_char)
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self.show_char(char, self.green)
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self.message_ascii += char
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@ -138,13 +141,13 @@ class MorseSenseHatKeyer:
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""" affiche le message courant """
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if __name__ == "__main__":
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if __name__ == "__main__": # lors de l'execution du script en standalone
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try:
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keyer = MorseSenseHatKeyer()
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keyer.sense.show_message("morse://", 0.02)
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# waiting for jostick events and directing them to keyer
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# waiting for joystick events and directing them to keyer
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pause()
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except (KeyboardInterrupt, SystemExit) as err:
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except (KeyboardInterrupt, SystemExit) as err: # lors d'un CTRL+C pour interruption
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sense = SenseHat()
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sense.show_message('out', 0.02)
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sense.show_message('bye', 0.02)
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sense.clear()
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