Merge branch 'main' of https://github.com/adafruit/Adafruit_Learning_System_Guides

Author: makermelissa

CLUE_Altimeter/code.py

@@ -46,7 +46,7 @@
 
 # background
 bg_bmp, bg_pal = adafruit_imageload.load(
-    "/network23.bmp", bitmap=displayio.Bitmap, palette=displayio.Palette
+    "images/network23.bmp", bitmap=displayio.Bitmap, palette=displayio.Palette
 )
 for i, color in enumerate(bg_pal):
     if color == 0xFF0000:

CLUE_Altimeter/network23.bmp renamed to CLUE_Altimeter/images/network23.bmp

@@ -0,0 +1,38 @@
+# SPDX-FileCopyrightText: 2018 Kattni Rembor for Adafruit Industries
+#
+# SPDX-License-Identifier: MIT
+
+"""
+CircuitPython PWM Audio Out tone example
+Plays a tone for one second on, one
+second off, in a loop.
+
+Remove this line and all of the following docstring content before submitting to the Learn repo.
+
+Update the audio out pin to match the wiring chosen for the microcontroller.
+Update the following pin name to a viable pin:
+* AUDIO_OUTPUT_PIN
+"""
+import time
+import array
+import math
+import board
+from audiocore import RawSample
+from audiopwmio import PWMAudioOut as AudioOut
+
+audio = AudioOut(board.AUDIO_OUTPUT_PIN)
+
+tone_volume = 0.1  # Increase this to increase the volume of the tone.
+frequency = 440  # Set this to the Hz of the tone you want to generate.
+length = 8000 // frequency
+sine_wave = array.array("H", [0] * length)
+for i in range(length):
+    sine_wave[i] = int((1 + math.sin(math.pi * 2 * i / length)) * tone_volume * (2 ** 15 - 1))
+
+sine_wave_sample = RawSample(sine_wave)
+
+while True:
+    audio.play(sine_wave_sample, loop=True)
+    time.sleep(1)
+    audio.stop()
+    time.sleep(1)

CircuitPython_Templates/pwm_tone_playback/code.py

@@ -0,0 +1,28 @@
+# SPDX-FileCopyrightText: 2018 Kattni Rembor for Adafruit Industries
+#
+# SPDX-License-Identifier: MIT
+
+"""
+CircuitPython PWM Audio Out WAV example
+Play a WAV file once.
+
+Remove this line and all of the following docstring content before submitting to the Learn repo.
+
+Update the audio out pin to match the wiring chosen for the microcontroller.
+Update the following pin name to a viable pin:
+* AUDIO_OUTPUT_PIN
+"""
+import board
+from audiocore import WaveFile
+from audiopwmio import PWMAudioOut as AudioOut
+
+audio = AudioOut(board.AUDIO_OUTPUT_PIN)
+
+with open("StreetChicken.wav", "rb") as wave_file:
+    wave = WaveFile(wave_file)
+    print("Playing wav file!")
+    audio.play(wave)
+    while audio.playing:
+        pass
+
+print("Done!")

CircuitPython_Templates/pwm_wav_playback/StreetChicken.wav

@@ -0,0 +1,29 @@
+# SPDX-FileCopyrightText: 2021 Kattni Rembor for Adafruit Industries
+# SPDX-License-Identifier: MIT
+"""
+CircuitPython I2S Tone playback example.
+Plays a tone for one second on, one
+second off, in a loop.
+"""
+import time
+import array
+import math
+import audiocore
+import board
+import audiobusio
+
+audio = audiobusio.I2SOut(board.D10, board.D9, board.D12)
+
+tone_volume = 0.1  # Increase this to increase the volume of the tone.
+frequency = 440  # Set this to the Hz of the tone you want to generate.
+length = 8000 // frequency
+sine_wave = array.array("h", [0] * length)
+for i in range(length):
+    sine_wave[i] = int((math.sin(math.pi * 2 * i / length)) * tone_volume * (2 ** 15 - 1))
+sine_wave_sample = audiocore.RawSample(sine_wave)
+
+while True:
+    audio.play(sine_wave_sample, loop=True)
+    time.sleep(1)
+    audio.stop()
+    time.sleep(1)

CircuitPython_Templates/pwm_wav_playback/code.py

@@ -0,0 +1,21 @@
+# SPDX-FileCopyrightText: 2021 Kattni Rembor for Adafruit Industries
+# SPDX-License-Identifier: MIT
+"""
+CircuitPython I2S WAV file playback.
+Plays a WAV file once.
+"""
+import audiocore
+import board
+import audiobusio
+
+audio = audiobusio.I2SOut(board.D10, board.D9, board.D12)
+
+with open("StreetChicken.wav", "rb") as wave_file:
+    wav = audiocore.WaveFile(wave_file)
+
+    print("Playing wav file!")
+    audio.play(wav)
+    while audio.playing:
+        pass
+
+print("Done!")

Metro_M7_Examples/I2S_Tone/code.py

@@ -0,0 +1,32 @@
+# SPDX-FileCopyrightText: 2018 Kattni Rembor for Adafruit Industries
+#
+# SPDX-License-Identifier: MIT
+
+"""
+CircuitPython PWM Audio Out tone example
+Plays a tone for one second on, one
+second off, in a loop.
+"""
+import time
+import array
+import math
+import board
+from audiocore import RawSample
+from audiopwmio import PWMAudioOut as AudioOut
+
+audio = AudioOut(board.A1)
+
+tone_volume = 0.1  # Increase this to increase the volume of the tone.
+frequency = 440  # Set this to the Hz of the tone you want to generate.
+length = 8000 // frequency
+sine_wave = array.array("H", [0] * length)
+for i in range(length):
+    sine_wave[i] = int((1 + math.sin(math.pi * 2 * i / length)) * tone_volume * (2 ** 15 - 1))
+
+sine_wave_sample = RawSample(sine_wave)
+
+while True:
+    audio.play(sine_wave_sample, loop=True)
+    time.sleep(1)
+    audio.stop()
+    time.sleep(1)