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57 lines
1.1 KiB
ReStructuredText
57 lines
1.1 KiB
ReStructuredText
Mic API
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********
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-----------------------------
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Function
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---------
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---------------------
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Usage
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------
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.. code:: python
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from m5stack import *
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import machine, _thread
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mic_adc = 0
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buffer = []
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def microphone_enter():
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print('microphone_enter')
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global mic_adc, buffer
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try:
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mic_adc = machine.ADC(34)
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mic_adc.atten(mic_adc.ATTN_11DB)
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dac = machine.DAC(machine.Pin(25))
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dac.write(0)
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except:
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pass
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buffer = []
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for i in range(0, 55):
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buffer.append(0)
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def microphone_loop():
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global mic_adc, buffer
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val = 0
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for i in range(0, 32):
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raw = (mic_adc.readraw() - 1845) // 10
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if raw > 20:
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raw = 20
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elif raw < -20:
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raw = -20
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val += raw
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val = val // 32
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buffer.pop()
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buffer.insert(0, val)
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for i in range(1, 50):
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lcd.line(i*2+44, 120+buffer[i+1], i*2+44+2, 120+buffer[i+2], lcd.WHITE)
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lcd.line(i*2+44, 120+buffer[i], i*2+44+2, 120+buffer[i+1], lcd.BLACK)
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microphone_enter()
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while 1:
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microphone_loop()
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