kopia lustrzana https://github.com/pimoroni/pimoroni-pico
63 wiersze
2.0 KiB
Python
63 wiersze
2.0 KiB
Python
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from pimoroni_i2c import PimoroniI2C
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from pimoroni import BREAKOUT_GARDEN_I2C_PINS # or PICO_EXPLORER_I2C_PINS or HEADER_I2C_PINS
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from breakout_encoder_wheel import BreakoutEncoderWheel, NUM_BUTTONS
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"""
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How to read the buttons and rotary dial of the Encoder Wheel breakout, only when an interrupt occurs.
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Press Ctrl+C to stop the program.
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"""
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# Constants
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BUTTON_NAMES = ["Up", "Down", "Left", "Right", "Centre"]
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# Create a new BreakoutEncoderWheel with a pin on the Pico specified as an interrupt
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i2c = PimoroniI2C(**BREAKOUT_GARDEN_I2C_PINS)
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wheel = BreakoutEncoderWheel(i2c, interrupt=3) # 3 for BG_BASE, 22 for EXPLORER_BASE, or 19 for some RP2040 boards
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# If wiring the breakout via the qw/st connector, use the below line instead
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# wheel = BreakoutEncoderWheel(i2c)
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# Variables
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last_pressed = [False] * NUM_BUTTONS
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pressed = [False] * NUM_BUTTONS
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position = 0
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hue = 0.0
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# Set the first LED
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wheel.clear()
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wheel.set_hsv(position, hue, 1.0, 1.0)
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wheel.show()
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# Clear any left over interrupt from previous code
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wheel.clear_interrupt_flag()
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# Loop forever
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while True:
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# Check if the interrupt has fired
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if wheel.get_interrupt_flag():
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wheel.clear_interrupt_flag()
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# Read all of the encoder wheel's buttons
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for b in range(NUM_BUTTONS):
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pressed[b] = wheel.pressed(b)
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if pressed[b] != last_pressed[b]:
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print(BUTTON_NAMES[b], "Pressed" if pressed[b] else "Released")
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last_pressed[b] = pressed[b]
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# The interrupt may have come from several sources,
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# so check if it was a position change
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new_position = wheel.step()
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if new_position != position:
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# Record the new position (from 0 to 23)
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position = new_position
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print("Position = ", position)
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# Record a colour hue from 0.0 to 1.0
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hue = wheel.revolutions() % 1.0
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# Set the LED at the new position to the new hue
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wheel.clear()
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wheel.set_hsv(position, hue, 1.0, 1.0)
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wheel.show()
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