44 lines
1.2 KiB
Python
44 lines
1.2 KiB
Python
# SPDX-FileCopyrightText: 2021 Sandy Macdonald
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#
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# SPDX-License-Identifier: MIT
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# This example demonstrates the use of a modifier key to pick the colour of the
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# keys' LEDs, as well as the LED sleep functionality.
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# Drop the keybow2040.py file into your `lib` folder on your `CIRCUITPY` drive.
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import board
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from keybow2040 import Keybow2040, number_to_xy, hsv_to_rgb
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MODIFIER_KEY = 0
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# Set up Keybow
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i2c = board.I2C()
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keybow = Keybow2040(i2c)
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keys = keybow.keys
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# Enable LED sleep and set a time of 5 seconds before the LEDs turn off.
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# They'll turn back on with a tap of any key!
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keybow.led_sleep_enabled = True
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keybow.led_sleep_time = 5
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# Set up the modifier key. It's 0, or the bottom left key.
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modifier_key = keys[MODIFIER_KEY]
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modifier_key.modifier = True
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# The starting colour (black/off)
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rgb = (0, 0, 0)
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while True:
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# Always remember to call keybow.update()!
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keybow.update()
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# If the modifier key and any other key are pressed, then set all the
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# keys to the selected colour. The second key pressed picks the colour.
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if modifier_key.held and keybow.any_pressed:
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if len(keybow.get_pressed()) > 1:
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hue = max(keybow.get_pressed()) / 15.0
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rgb = hsv_to_rgb(hue, 1.0, 1.0)
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keybow.set_all(*rgb)
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