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#!/usr/bin/env python
# -*- coding: utf-8 -*-
from __future__ import print_function, division
from pygame.locals import *
import os
import pygame
import random
import serial
import sys
import time
import RPi.GPIO as GPIO
pins = {
2: 'amin',
3: 'bmin',
4: 'cmin',
5: 'dmin',
6: 'emin',
7: 'fmin',
8: 'gmin',
9: 'amaj',
10: 'bmaj',
11: 'cmaj',
12: 'dmaj',
13: 'emaj',
14: 'fmaj',
15: 'gmaj',
16: 'clean',
17: 'dirty',
}
chords = {
'amaj': [0, 0, 2, 2, 2, 0],
'bmaj': [2, 2, 4, 4, 4, 2],
'cmaj': [3, 3, 2, 0, 1, 0],
'dmaj': [0, 0, 0, 2, 3, 2],
'emaj': [0, 2, 2, 1, 0, 0],
'fmaj': [1, 3, 3, 2, 1, 1],
'gmaj': [3, 2, 0, 0, 3, 3],
'amin': [0, 0, 2, 2, 1, 0],
'bmin': [2, 2, 4, 4, 3, 2],
'cmin': [3, 1, 3, 3, 2, 1],
'dmin': [0, 0, 0, 2, 3, 1],
'emin': [0, 0, 0, 0, 0, 0],
'fmin': [0, 2, 2, 0, 0, 0],
'gmin': [3, 2, 0, 0, 3, 0],
}
GPIO.setmode(GPIO.BCM)
NUM_STRINGS = 6
NUM_FRETS = 5
for pin in pins:
GPIO.setup(pin, GPIO.IN, pull_up_down=GPIO.PUD_UP)
ser = serial.Serial('/dev/ttyACM0')
pygame.mixer.pre_init(44100, -16, 2, 2048)
pygame.init()
sounds = {
'clean': [[0 for x in range(NUM_FRETS)] for y in range(NUM_STRINGS)],
'dirty': [[0 for x in range(NUM_FRETS)] for y in range(NUM_STRINGS)],
}
for sound in sounds:
for string in range(NUM_STRINGS):
for fret in range(NUM_FRETS):
filename = sound + '-' + str(string) + '-' + str(fret) + '.wav'
sounds[sound][string][fret] = pygame.mixer.Sound(
os.path.join('audio', filename))
sounds[sound][string][fret].set_volume(0.1)
chord = chords[random.choice(chords.keys())]
mode = 'dirty'
while True:
for pin in range(2, 18):
if GPIO.input(pin) == GPIO.LOW and pin < 16:
chord = chords[pins[pin]]
elif GPIO.input(pin) == GPIO.LOW and pin > 15:
mode = pins[pin]
if ser.inWaiting() > 2:
serial_data = ser.read(3)
data_event = int(serial_data.split('-')[0])
data_string = int(serial_data.split('-')[-1])
if data_event is 0:
sounds[mode][data_string][chord[data_string]].play()
elif data_event is 1:
for fret in range(NUM_FRETS):
for m in sounds:
sounds[m][data_string][fret].fadeout(250)
GPIO.cleanup()
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