92 lines
2.8 KiB
Python
92 lines
2.8 KiB
Python
# SPDX-FileCopyrightText: 2018 Anne Barela for Adafruit Industries
|
|
#
|
|
# SPDX-License-Identifier: MIT
|
|
|
|
# Blues Playground Instrument
|
|
# 2018-06-19 v03
|
|
|
|
import time
|
|
from adafruit_circuitplayground.express import cpx
|
|
|
|
# lists
|
|
drums = [ # startup and drum sound files
|
|
"chime.wav",
|
|
"kick.wav",
|
|
"snare.wav",
|
|
"hat.wav",
|
|
"cymbal.wav",
|
|
"tamb.wav",
|
|
"cowbell.wav",
|
|
"vibra_slap.wav"
|
|
]
|
|
|
|
chords = ["cp_A.wav", "cp_D.wav", "cp_E.wav"]
|
|
|
|
chord_changes = [ # chord_file, beats to play, beats played
|
|
[0, 4, 0],
|
|
[1, 4, 0],
|
|
[0, 2, 0], [1, 2, 0],
|
|
[0, 4, 0],
|
|
[1, 4, 0],
|
|
[1, 4, 0],
|
|
[0, 2, 0], [1, 2, 0],
|
|
[0, 4, 0],
|
|
[2, 4, 0],
|
|
[1, 4, 0],
|
|
[0, 2, 0], [1, 2, 0],
|
|
[0, 2, 0], [2, 2, 0]
|
|
]
|
|
|
|
cpx.pixels.fill((0, 0, 0)) # clear all pixels
|
|
cpx.play_file(drums[0]) # play startup
|
|
|
|
# select instrument mode with slide switch
|
|
if cpx.switch:
|
|
instrument = "Chords" # remember mode for later
|
|
for i in range(9, -1, -1): # fill chord range background with blue
|
|
cpx.pixels[i] = (0, 0, 1)
|
|
time.sleep(0.05)
|
|
else:
|
|
instrument = "Drums" # remember mode for later
|
|
for i in range(9, 2, -1): # fill voice range background with white
|
|
cpx.pixels[i] = (1, 1, 1)
|
|
time.sleep(0.05)
|
|
|
|
voice = 1 # first drum voice
|
|
cpx.pixels[10 - voice] = (0, 5, 0) # green for first voice
|
|
cpx.play_file(drums[voice]) # play first drum voice
|
|
|
|
# choose drum voice with button A, lock-in selection with button B
|
|
while not cpx.button_b:
|
|
if cpx.button_a: # loop through voices
|
|
cpx.pixels[10 - voice] = (1, 1, 1) # replace background color
|
|
voice = voice + 1
|
|
if voice > 7:
|
|
voice = 1
|
|
cpx.pixels[10 - voice] = (0, 5, 0) # green for voice selection
|
|
cpx.play_file(drums[voice]) # play current voice
|
|
time.sleep(0.3)
|
|
for i in range(3, 10):
|
|
if i != (10 - voice):
|
|
cpx.pixels[i] = (0, 0, 0)
|
|
time.sleep(.1)
|
|
time.sleep(0.3)
|
|
|
|
# let's play the blues!
|
|
c_idx = 0 # start with the first chord change
|
|
while True:
|
|
cpx.detect_taps = 1
|
|
if cpx.tapped: # wait for single tap
|
|
if instrument == "Drums":
|
|
cpx.play_file(drums[voice]) # play the selected drum sound
|
|
|
|
if instrument == "Chords": # play chords in sequence
|
|
cpx.pixels[9 - (c_idx % 16)] = (3, 3, 0) # yellow foreground
|
|
cpx.play_file(chords[chord_changes[c_idx][0]])
|
|
chord_changes[c_idx][2] = chord_changes[c_idx][2] + 1
|
|
cpx.pixels[9 - (c_idx % 16)] = (0, 0, 1) # replace background
|
|
if chord_changes[c_idx][2] >= chord_changes[c_idx][1]:
|
|
chord_changes[c_idx][2] = 0
|
|
c_idx = c_idx + 1
|
|
if c_idx > 15:
|
|
c_idx = 0
|