CircuitPython Feather RP2350 examples

adding examples for the Feather RP2350

Feather_RP2350_Examples/CircuitPython_Digital_Input/code.py

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+# SPDX-FileCopyrightText: 2021 Kattni Rembor for Adafruit Industries
+# SPDX-License-Identifier: MIT
+"""
+CircuitPython Digital Input Example - Blinking an LED using a button switch.
+"""
+import board
+import digitalio
+
+led = digitalio.DigitalInOut(board.LED)
+led.direction = digitalio.Direction.OUTPUT
+
+button = digitalio.DigitalInOut(board.D5)
+button.switch_to_input(pull=digitalio.Pull.UP)
+
+while True:
+    if not button.value:
+        led.value = True
+    else:
+        led.value = False

Feather_RP2350_Examples/CircuitPython_I2S_Tone/code.py

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+# 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.D6, board.D5, board.D9)
+
+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)

Feather_RP2350_Examples/CircuitPython_I2S_Wav/code.py

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+# 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.D6, board.D5, board.D9)
+
+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!")

Feather_RP2350_Examples/CircuitPython_PWM_mp3/code.py

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+# SPDX-FileCopyrightText: 2021 Kattni Rembor for Adafruit Industries
+# SPDX-License-Identifier: MIT
+"""
+CircuitPython single MP3 playback example.
+Plays a single MP3 once.
+"""
+import board
+import audiomp3
+import audiopwmio
+
+audio = audiopwmio.PWMAudioOut(board.A0)
+
+with open("slow.mp3", "rb") as mp3_file:
+    decoder = audiomp3.MP3Decoder(mp3_file)
+
+    audio.play(decoder)
+    while audio.playing:
+        pass
+
+print("Done playing!")

Feather_RP2350_Examples/CircuitPython_PWM_multiMP3/code.py

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+# SPDX-FileCopyrightText: 2021 Kattni Rembor for Adafruit Industries
+# SPDX-License-Identifier: MIT
+"""
+CircuitPython multiple MP3 playback example.
+Plays two MP3 files consecutively, once time each.
+"""
+
+import board
+import audiomp3
+import audiopwmio
+
+audio = audiopwmio.PWMAudioOut(board.A0)
+
+mp3files = ["slow.mp3", "happy.mp3"]
+
+with open(mp3files[0], "rb") as mp3:
+    decoder = audiomp3.MP3Decoder(mp3)
+
+    for filename in mp3files:
+        with open(filename, "rb") as decoder.file:
+            audio.play(decoder)
+            print("Playing:", filename)
+            while audio.playing:
+                pass
+
+print("Done playing!")