Add code for CP basic data structures guide
This commit is contained in:
Dave Astels
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4 changed files with 255 additions and 0 deletions
31
CircuitPython_101/basic_data_structures/play_note/code.py
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31
CircuitPython_101/basic_data_structures/play_note/code.py
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import time
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import board
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import pulseio
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C4 = 261
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C_SH_4 = 277
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D4 = 293
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D_SH_4 = 311
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E4 = 329
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F4 = 349
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F_SH_4 = 369
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G4 = 392
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G_SH_4 = 415
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A4 = 440
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A_SH_4 = 466
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B4 = 493
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def play_note(note):
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if note[0] != 0:
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pwm = pulseio.PWMOut(board.D12, duty_cycle = 0, frequency=note[0])
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pwm.duty_cycle = 0x7FFF
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time.sleep(note[1])
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if note[0] != 0:
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pwm.deinit()
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a4_quarter = (A4, 0.25)
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c4_half = (C4, 0.5)
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play_note(a4_quarter)
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play_note(c4_half)
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86
CircuitPython_101/basic_data_structures/song_book/code.py
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86
CircuitPython_101/basic_data_structures/song_book/code.py
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import time
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import board
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import debouncer
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import busio as io
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import digitalio
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import pulseio
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import adafruit_ssd1306
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i2c = io.I2C(board.SCL, board.SDA)
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reset_pin = digitalio.DigitalInOut(board.D11)
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oled = adafruit_ssd1306.SSD1306_I2C(128, 32, i2c, reset=reset_pin)
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button_select = debouncer.Debouncer(board.D7, mode=digitalio.Pull.UP)
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button_play = debouncer.Debouncer(board.D9, mode=digitalio.Pull.UP)
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C4 = 261
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C_SH_4 = 277
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D4 = 293
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D_SH_4 = 311
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E4 = 329
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F4 = 349
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F_SH_4 = 369
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G4 = 392
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G_SH_4 = 415
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A4 = 440
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A_SH_4 = 466
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B4 = 493
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songbook = {'Twinkle Twinkle': [(C4, 0.5), (C4, 0.5), (G4, 0.5), (G4, 0.5), (A4, 0.5), (A4, 0.5), (G4, 1.0), (0, 0.5),
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(F4, 0.5), (F4, 0.5), (E4, 0.5), (E4, 0.5), (D4, 0.5), (D4, 0.5), (C4, 0.5), (0, 0.5),
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(G4, 0.5), (G4, 0.5), (F4, 0.5), (F4, 0.5), (E4, 0.5), (E4, 0.5), (D4, 0.5), (0, 0.5),
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(G4, 0.5), (G4, 0.5), (F4, 0.5), (F4, 0.5), (E4, 0.5), (E4, 0.5), (D4, 0.5), (0, 0.5),
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(C4, 0.5), (C4, 0.5), (G4, 0.5), (G4, 0.5), (A4, 0.5), (A4, 0.5), (G4, 1.0), (0, 0.5),
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(F4, 0.5), (F4, 0.5), (E4, 0.5), (E4, 0.5), (D4, 0.5), (D4, 0.5), (C4, 0.5), (0, 0.5)],
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'ItsyBitsy Spider': [(G4, 0.5), (C4, 0.5), (C4, 0.5), (C4, 0.5), (D4, 0.5), (E4, 0.5), (E4, 0.5), (E4, 0.5), (D4, 0.5), (C4, 0.5), (D4, 0.5), (E4, 0.5), (C4, 0.5), (0, 0.5),
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(E4, 0.5), (E4, 0.5), (F4, 0.5), (G4, 0.5), (G4, 0.5), (F4, 0.5), (E4, 0.5), (F4, 0.5), (G4, 0.5), (E4, 0.5), (0, 0.5)],
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'Old MacDonald': [(G4, 0.5), (G4, 0.5), (G4, 0.5), (D4, 0.5), (E4, 0.5), (E4, 0.5), (D4, 0.5), (0, 0.5),
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(B4, 0.5), (B4, 0.5), (A4, 0.5), (A4, 0.5), (G4, 0.5), (0, 0.5),
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(D4, 0.5), (G4, 0.5), (G4, 0.5), (G4, 0.5), (D4, 0.5), (E4, 0.5), (E4, 0.5), (D4, 0.5), (0, 0.5),
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(B4, 0.5), (B4, 0.5), (A4, 0.5), (A4, 0.5), (G4, 0.5), (0, 0.5),
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(D4, 0.5), (D4, 0.5), (G4, 0.5), (G4, 0.5), (G4, 0.5), (D4, 0.5), (D4, 0.5), (G4, 0.5), (G4, 0.5), (G4, 0.5), (0, 0.5),
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(G4, 0.5), (G4, 0.5), (G4, 0.5), (G4, 0.5), (G4, 0.5), (G4, 0.5), (0, 0.5),
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(G4, 0.5), (G4, 0.5), (G4, 0.5), (G4, 0.5), (G4, 0.5), (G4, 0.5), (0, 0.5),
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(G4, 0.5), (G4, 0.5), (G4, 0.5), (D4, 0.5), (E4, 0.5), (E4, 0.5), (D4, 0.5), (0, 0.5),
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(B4, 0.5), (B4, 0.5), (A4, 0.5), (A4, 0.5), (G4, 0.5), (0, 0.5)]
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}
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def play_note(note):
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if note[0] != 0:
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pwm = pulseio.PWMOut(board.D12, duty_cycle = 0, frequency=note[0])
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pwm.duty_cycle = 0x7FFF
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time.sleep(note[1])
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if note[0] != 0:
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pwm.deinit()
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def play_song(songname):
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for note in songbook[songname]:
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play_note(note)
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def update(songnames, selected):
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oled.fill(0)
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line = 0
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for songname in songnames:
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if line == selected:
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oled.text(">", 0, line * 8)
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oled.text(songname, 10, line * 8)
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line += 1
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oled.show()
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selected_song = 0
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song_names = sorted(list(songbook.keys()))
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while True:
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button_select.update()
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button_play.update()
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update(song_names, selected_song)
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if button_select.fell:
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print("select")
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selected_song = (selected_song + 1) % len(songbook)
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elif button_play.fell:
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print("play")
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play_song(song_names[selected_song])
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105
CircuitPython_101/basic_data_structures/song_book/debouncer.py
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105
CircuitPython_101/basic_data_structures/song_book/debouncer.py
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"""
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The MIT License (MIT)
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Copyright (c) 2018 Dave Astels
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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--------------------------------------------------------------------------------
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Debounce an input pin.
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"""
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import time
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import digitalio
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class Debouncer(object):
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"""Debounce an input pin"""
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DEBOUNCED_STATE = 0x01
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UNSTABLE_STATE = 0x02
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CHANGED_STATE = 0x04
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def __init__(self, pin, mode=None, interval=0.010):
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"""Make am instance.
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:param int pin: the pin (from board) to debounce
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:param int mode: digitalio.Pull.UP or .DOWN (default is no pull up/down)
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:param int interval: bounce threshold in seconds (default is 0.010, i.e. 10 milliseconds)
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"""
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self.state = 0x00
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self.pin = digitalio.DigitalInOut(pin)
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self.pin.direction = digitalio.Direction.INPUT
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if mode != None:
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self.pin.pull = mode
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if self.pin.value:
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self.__set_state(Debouncer.DEBOUNCED_STATE | Debouncer.UNSTABLE_STATE)
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self.previous_time = 0
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if interval is None:
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self.interval = 0.010
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else:
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self.interval = interval
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def __set_state(self, bits):
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self.state |= bits
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def __unset_state(self, bits):
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self.state &= ~bits
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def __toggle_state(self, bits):
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self.state ^= bits
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def __get_state(self, bits):
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return (self.state & bits) != 0
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def update(self):
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"""Update the debouncer state. Must be called before using any of the properties below"""
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self.__unset_state(Debouncer.CHANGED_STATE)
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current_state = self.pin.value
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if current_state != self.__get_state(Debouncer.UNSTABLE_STATE):
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self.previous_time = time.monotonic()
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self.__toggle_state(Debouncer.UNSTABLE_STATE)
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else:
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if time.monotonic() - self.previous_time >= self.interval:
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if current_state != self.__get_state(Debouncer.DEBOUNCED_STATE):
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self.previous_time = time.monotonic()
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self.__toggle_state(Debouncer.DEBOUNCED_STATE)
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self.__set_state(Debouncer.CHANGED_STATE)
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@property
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def value(self):
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"""Return the current debounced value of the input."""
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return self.__get_state(Debouncer.DEBOUNCED_STATE)
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@property
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def rose(self):
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"""Return whether the debounced input went from low to high at the most recent update."""
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return self.__get_state(self.DEBOUNCED_STATE) and self.__get_state(self.CHANGED_STATE)
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@property
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def fell(self):
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"""Return whether the debounced input went from high to low at the most recent update."""
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return (not self.__get_state(self.DEBOUNCED_STATE)) and self.__get_state(self.CHANGED_STATE)
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33
CircuitPython_101/basic_data_structures/song_list/code.py
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33
CircuitPython_101/basic_data_structures/song_list/code.py
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import time
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import board
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import pulseio
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C4 = 261
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C_SH_4 = 277
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D4 = 293
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D_SH_4 = 311
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E4 = 329
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F4 = 349
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F_SH_4 = 369
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G4 = 392
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G_SH_4 = 415
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A4 = 440
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A_SH_4 = 466
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B4 = 493
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twinkle = [(C4, 0.5), (C4, 0.5), (G4, 0.5), (G4, 0.5), (A4, 0.5), (A4, 0.5), (G4, 0.5), (0, 0.5),
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(F4, 0.5), (F4, 0.5), (E4, 0.5), (E4, 0.5), (D4, 0.5), (D4, 0.5), (C4, 0.5)]
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def play_note(note):
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if note[0] != 0:
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pwm = pulseio.PWMOut(board.D12, duty_cycle = 0, frequency=note[0])
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pwm.duty_cycle = 0x7FFF
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time.sleep(note[1])
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if note[0] != 0:
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pwm.deinit()
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def play_song(song):
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for note in song:
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play_note(note)
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play_song(twinkle)
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