kopia lustrzana https://github.com/pimoroni/pimoroni-pico
69 wiersze
1.9 KiB
Python
69 wiersze
1.9 KiB
Python
import time
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# Pick *one* sensor type by uncommenting the relevant line below:
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# PMW3901
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from breakout_pmw3901 import BreakoutPMW3901 as FlowSensor
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# PAA5100
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# from breakout_paa5100 import BreakoutPAA5100 as FlowSensor
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flo = FlowSensor()
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rotation = FlowSensor.DEGREES_0
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SIZE = FlowSensor.FRAME_SIZE
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BYTES = FlowSensor.FRAME_BYTES
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data = bytearray(BYTES)
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flo.set_rotation(rotation)
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offset = 0
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value = 0
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def value_to_char(value):
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charmap = " .:-=+*#%@"
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val = float(value) / 255.0
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val *= len(charmap) - 1
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chosen_char = charmap[int(val)]
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return chosen_char * 2 # Double chars to - sort of - correct aspect ratio
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while True:
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print("Capturing...")
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time.sleep(0.1)
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# Warning! The frame capture function below can take up to 10 seconds to run! Also, it often fails to capture all bytes.
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# A shorter timeout (in seconds) can be set with the 'timeout' keyword e.g. frame_capture(data, timeout=6.0)
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data_size = flo.frame_capture(data)
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if data_size == BYTES:
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for y in range(0, SIZE):
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if rotation == FlowSensor.DEGREES_180 or rotation == FlowSensor.DEGREES_270:
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y = SIZE - y - 1
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for x in range(0, SIZE):
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if rotation == FlowSensor.DEGREES_180 or rotation == FlowSensor.DEGREES_90:
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x = SIZE - x - 1
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if rotation == FlowSensor.DEGREES_90 or rotation == FlowSensor.DEGREES_270:
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offset = (x * 35) + y
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else:
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offset = (y * 35) + x
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value = data[offset]
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print(value_to_char(value), end="")
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print()
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else:
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print("Capture failed. {} bytes received, of {}. Recapturing in ".format(data_size, BYTES))
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print("5...")
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time.sleep(1.0)
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print("4...")
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time.sleep(1.0)
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print("3...")
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time.sleep(1.0)
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print("2...")
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time.sleep(1.0)
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print("Get Ready!")
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time.sleep(1.0)
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