90 lines
3.0 KiB
Python
90 lines
3.0 KiB
Python
"""
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mixgo_zero Zi Voice Onboard resources
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Micropython library for the mixgo_zero Zi Onboard resources
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=======================================================
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#Preliminary composition 20230818
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dahanzimin From the Mixly Team
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"""
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import ustruct
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import time
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import music_spk
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import es8374
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from machine import Pin, I2S
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from mixgo_nova import onboard_i2c
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sample_rate = 22050
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ob_code = es8374.ES8374(onboard_i2c)
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time.sleep(0.2)
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#ps 特殊改双全工i2s支持
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ob_audio = I2S(0, sck=Pin(34), ws=Pin(47), dout=Pin(48), din=Pin(33), mck=Pin(35), mode=I2S.RTX, bits=16, format=I2S.MONO, rate=sample_rate, ibuf=20000)
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spk_midi = music_spk.MIDI(ob_audio, sample_rate)
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def u2s(n):
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return n if n < (1 << 15) else n - (1 << 16)
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def sound_level():
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buf = bytearray(100)
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values = []
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ob_audio.readinto(buf)
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for i in range(len(buf)//2):
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values.append(u2s(buf[i * 2] | buf[i * 2 + 1]<<8))
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return max(values) - min(values)
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def play_audio(path):
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file = open(path, 'rb')
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header = file.read(44)
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if header[8:12] != b'WAVE':
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raise Error('not a WAVE file')
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_rate = ustruct.unpack('<I', header[24:28])[0]
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print("sample_rate", _rate)
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file.seek(44)
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ob_audio = I2S(0, sck=Pin(34), ws=Pin(47), dout=Pin(48), din=Pin(33), mck=Pin(35), mode=I2S.RTX, bits=16, format=I2S.MONO, rate=_rate, ibuf=20000)
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while True:
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block = file.read(1024)
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if not block:
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break
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ob_audio.write(block)
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ob_audio = I2S(0, sck=Pin(34), ws=Pin(47), dout=Pin(48), din=Pin(33), mck=Pin(35), mode=I2S.RTX, bits=16, format=I2S.MONO, rate=sample_rate, ibuf=20000)
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file.close()
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def record_audio(path, seconds=5):
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ob_audio = I2S(0, sck=Pin(34), ws=Pin(47), dout=Pin(48), din=Pin(33), mck=Pin(35), mode=I2S.RTX, bits=16, format=I2S.MONO, rate=sample_rate*4, ibuf=20000)
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file_size = sample_rate * 16 * 1 * seconds // 8
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wav_header = bytearray(44)
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wav_header[0:4] = b'RIFF'
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ustruct.pack_into('<I', wav_header, 4, file_size + 36)
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wav_header[8:40] = b'WAVEfmt \x10\x00\x00\x00\x01\x00\x01\x00"V\x00\x00D\xac\x00\x00\x02\x00\x10\x00data'
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ustruct.pack_into('<I', wav_header, 40, file_size)
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buf = bytearray(512)
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file = open(path, 'wb')
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file.write(wav_header)
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for _ in range(file_size // 512):
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ob_audio.readinto(buf)
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file.write(buf)
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ob_audio = I2S(0, sck=Pin(34), ws=Pin(47), dout=Pin(48), din=Pin(33), mck=Pin(35), mode=I2S.RTX, bits=16, format=I2S.MONO, rate=sample_rate, ibuf=20000)
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file.close()
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def play_audio_url(url):
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import urequests
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response = urequests.get(url, stream=True)
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header = response.raw.read(44)
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if header[8:12] != b'WAVE':
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raise Error('not a WAVE file')
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_rate = ustruct.unpack('<I', header[24:28])[0]
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#print("sample_rate", _rate)
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ob_audio = I2S(0, sck=Pin(34), ws=Pin(47), dout=Pin(48), din=Pin(33), mck=Pin(35), mode=I2S.RTX, bits=16, format=I2S.MONO, rate=_rate, ibuf=20000)
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while True:
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block = response.raw.read(1024)
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if not block:
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break
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ob_audio.write(block)
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ob_audio = I2S(0, sck=Pin(34), ws=Pin(47), dout=Pin(48), din=Pin(33), mck=Pin(35), mode=I2S.RTX, bits=16, format=I2S.MONO, rate=sample_rate, ibuf=20000)
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response.close()
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