初始化提交

boards/default/micropython_esp32s3/build/lib/mixgo_zero_voice.py

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+"""
+mixgo_zero Zi Voice Onboard resources
+
+Micropython    library for the mixgo_zero Zi Onboard resources
+=======================================================
+
+#Preliminary composition                   20230818
+
+dahanzimin From the Mixly Team
+"""
+import ustruct
+import time
+import music_spk
+import es8374
+from machine import Pin, I2S
+from mixgo_zero import onboard_i2c
+
+sample_rate = 22050
+ob_code = es8374.ES8374(onboard_i2c)
+time.sleep(0.2)
+
+#ps 特殊改双全工i2s支持
+ob_audio = I2S(0, sck=Pin(39), ws=Pin(41), dout=Pin(42), din=Pin(40),  mck=Pin(38), mode=I2S.RTX, bits=16, format=I2S.MONO, rate=sample_rate, ibuf=20000)
+
+spk_midi = music_spk.MIDI(ob_audio, sample_rate)
+
+def u2s(n):
+    return n if n < (1 << 15) else n - (1 << 16)  
+
+def sound_level():
+	buf = bytearray(100)
+	values = []
+	ob_audio.readinto(buf)
+	for i in range(len(buf)//2):
+		values.append(u2s(buf[i * 2] | buf[i * 2 + 1]<<8))
+	return max(values) - min(values)
+
+def play_audio(path):
+	file = open(path, 'rb')
+	header = file.read(44)
+	if header[8:12] != b'WAVE':
+		raise Error('not a WAVE file')
+	_rate = ustruct.unpack('<I', header[24:28])[0]
+	print("sample_rate", _rate)
+	file.seek(44)
+	ob_audio = I2S(0, sck=Pin(39), ws=Pin(41), dout=Pin(42), din=Pin(40),  mck=Pin(38), mode=I2S.RTX, bits=16, format=I2S.MONO, rate=_rate, ibuf=20000)
+	while True:
+		block = file.read(1024)
+		if not block:
+			break
+		ob_audio.write(block)
+	ob_audio = I2S(0, sck=Pin(39), ws=Pin(41), dout=Pin(42), din=Pin(40),  mck=Pin(38), mode=I2S.RTX, bits=16, format=I2S.MONO, rate=sample_rate, ibuf=20000)
+	file.close()
+
+def record_audio(path, seconds=5):
+	ob_audio = I2S(0, sck=Pin(39), ws=Pin(41), dout=Pin(42), din=Pin(40),  mck=Pin(38), mode=I2S.RTX, bits=16, format=I2S.MONO, rate=sample_rate*4, ibuf=20000)
+	file_size = sample_rate * 16 * 1 * seconds // 8
+	wav_header = bytearray(44)
+	wav_header[0:4] = b'RIFF'
+	ustruct.pack_into('<I', wav_header, 4, file_size + 36)
+	wav_header[8:40] = b'WAVEfmt \x10\x00\x00\x00\x01\x00\x01\x00"V\x00\x00D\xac\x00\x00\x02\x00\x10\x00data'
+	ustruct.pack_into('<I', wav_header, 40, file_size)
+
+	buf = bytearray(512)
+	file = open(path, 'wb')
+	file.write(wav_header)
+	for _ in range(file_size // 512):
+		ob_audio.readinto(buf)
+		file.write(buf)
+	ob_audio = I2S(0, sck=Pin(39), ws=Pin(41), dout=Pin(42), din=Pin(40),  mck=Pin(38), mode=I2S.RTX, bits=16, format=I2S.MONO, rate=sample_rate, ibuf=20000)
+	file.close()
+
+def play_audio_url(url):
+	import urequests
+	response = urequests.get(url, stream=True)
+	header = response.raw.read(44)
+	if header[8:12] != b'WAVE':
+		raise Error('not a WAVE file')
+	_rate = ustruct.unpack('<I', header[24:28])[0]
+	#print("sample_rate", _rate)
+	ob_audio = I2S(0, sck=Pin(39), ws=Pin(41), dout=Pin(42), din=Pin(40),  mck=Pin(38), mode=I2S.RTX, bits=16, format=I2S.MONO, rate=_rate, ibuf=20000)
+	while True:
+		block = response.raw.read(1024)
+		if not block:
+			break
+		ob_audio.write(block)
+	ob_audio = I2S(0, sck=Pin(39), ws=Pin(41), dout=Pin(42), din=Pin(40),  mck=Pin(38), mode=I2S.RTX, bits=16, format=I2S.MONO, rate=sample_rate, ibuf=20000)
+	response.close()