Autoformat Microphone flag
This commit is contained in:
Craig Richardson
parent
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commit
c7edeb188b
1 changed files with 29 additions and 21 deletions
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@ -33,14 +33,15 @@ import time
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from analogio import AnalogIn
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import array
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n_pixels = 16 # Number of pixels you are using
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mic_pin = AnalogIn(board.A1) # Microphone is attached to this analog pin
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led_pin = board.D1 # NeoPixel LED strand is connected to this pin
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n_pixels = 16 # Number of pixels you are using
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mic_pin = AnalogIn(board.A1) # Microphone is attached to this analog pin
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led_pin = board.D1 # NeoPixel LED strand is connected to this pin
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sample_window = .1 # Sample window for average level
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peak_hang = 24 # Time of pause before peak dot falls
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peak_fall = 4 # Rate of falling peak dot
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input_floor = 10 # Lower range of analogRead input
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input_ceiling = 300 # Max range of analogRead input, the lower the value the more sensitive (1023 = max)
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# Max range of analogRead input, the lower the value the more sensitive (1023 = max)
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input_ceiling = 300
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peak = 16 # Peak level of column; used for falling dots
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sample = 0
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@ -50,6 +51,7 @@ dothangcount = 0 # Frame counter for holding peak dot
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strip = neopixel.NeoPixel(led_pin, n_pixels, brightness=1, auto_write=False)
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def wheel(pos):
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# Input a value 0 to 255 to get a color value.
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# The colours are a transition r - g - b - back to r.
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@ -64,6 +66,7 @@ def wheel(pos):
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pos -= 170
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return (0, int(pos*3), int(255 - pos*3))
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def remapRange(value, leftMin, leftMax, rightMin, rightMax):
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# this remaps a value fromhere original (left) range to new (right) range
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# Figure out how 'wide' each range is
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@ -76,6 +79,7 @@ def remapRange(value, leftMin, leftMax, rightMin, rightMax):
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# Convert the 0-1 range into a value in the right range.
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return int(rightMin + (valueScaled * rightSpan))
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def fscale(originalmin, originalmax, newbegin, newend, inputvalue, curve):
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originalrange = 0
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newrange = 0
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@ -86,16 +90,17 @@ def fscale(originalmin, originalmax, newbegin, newend, inputvalue, curve):
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# condition curve parameter
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# limit range
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if (curve > 10):
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if (curve > 10):
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curve = 10
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if (curve < -10):
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if (curve < -10):
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curve = -10
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# - invert and scale -
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# this seems more intuitive
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# - invert and scale -
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# this seems more intuitive
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# postive numbers give more weight to high end on output
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curve = (curve * -.1)
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curve = pow(10, curve) # convert linear scale into lograthimic exponent for other pow function
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curve = (curve * -.1)
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# convert linear scale into lograthimic exponent for other pow function
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curve = pow(10, curve)
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# Check for out of range inputValues
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if (inputvalue < originalmin):
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@ -114,21 +119,22 @@ def fscale(originalmin, originalmax, newbegin, newend, inputvalue, curve):
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invflag = 1
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zerorefcurval = inputvalue - originalmin
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normalizedcurval = zerorefcurval / originalrange # normalize to 0 - 1 float
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normalizedcurval = zerorefcurval / originalrange # normalize to 0 - 1 float
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# Check for originalMin > originalMax
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# -the math for all other cases
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# Check for originalMin > originalMax
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# -the math for all other cases
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# i.e. negative numbers seems to work out fine
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if (originalmin > originalmax ):
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if (originalmin > originalmax):
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return(0)
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if (invflag == 0):
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rangedvalue = (pow(normalizedcurval, curve) * newrange) + newbegin
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rangedvalue = (pow(normalizedcurval, curve) * newrange) + newbegin
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else: # invert the ranges
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rangedvalue = newbegin - (pow(normalizedcurval, curve) * newrange);
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rangedvalue = newbegin - (pow(normalizedcurval, curve) * newrange)
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return(rangedvalue)
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def drawLine(fromhere, to):
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fromheretemp = 0
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@ -139,21 +145,23 @@ def drawLine(fromhere, to):
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to = fromheretemp
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for i in range(fromhere, to):
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strip[i] = (0,0,0)
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strip[i] = (0, 0, 0)
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while True:
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time_start = time.monotonic() # current time used for sample window
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peaktopeak = 0 # peak-to-peak level
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signalmax = 0
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signalmin = 1023
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signalmin = 1023
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c = 0
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y = 0
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# collect data for length of sample window (in seconds)
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while ( ( time.monotonic() - time_start ) < sample_window):
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while ((time.monotonic() - time_start) < sample_window):
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sample = mic_pin.value / 64 # convert to arduino 10-bit [1024] fromhere 16-bit [65536]
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# convert to arduino 10-bit [1024] fromhere 16-bit [65536]
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sample = mic_pin.value / 64
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if (sample < 1024): # toss out spurious readings
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@ -171,7 +179,7 @@ while True:
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# Scale the input logarithmically instead of linearly
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c = fscale(input_floor, input_ceiling, (n_pixels - 1), 0, peaktopeak, 2)
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if (c < peak):
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if (c < peak):
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peak = c # keep dot on top
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dothangcount = 0 # make the dot hang before falling
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