72 lines
1.9 KiB
Python
Executable file
72 lines
1.9 KiB
Python
Executable file
# SPDX-FileCopyrightText: 2021 John Park
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# SPDX-License-Identifier: MIT
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# I2C rotary encoder multiple test example.
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# solder the A0 jumper on the second QT Rotary Encoder board
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import board
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from adafruit_seesaw import seesaw, rotaryio, digitalio, neopixel
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i2c = board.I2C() # uses board.SCL and board.SDA
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# i2c = board.STEMMA_I2C() # For using the built-in STEMMA QT connector on a microcontroller
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qt_enc1 = seesaw.Seesaw(i2c, addr=0x36)
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qt_enc2 = seesaw.Seesaw(i2c, addr=0x37)
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qt_enc1.pin_mode(24, qt_enc1.INPUT_PULLUP)
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button1 = digitalio.DigitalIO(qt_enc1, 24)
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button_held1 = False
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qt_enc2.pin_mode(24, qt_enc2.INPUT_PULLUP)
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button2 = digitalio.DigitalIO(qt_enc2, 24)
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button_held2 = False
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encoder1 = rotaryio.IncrementalEncoder(qt_enc1)
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last_position1 = None
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encoder2 = rotaryio.IncrementalEncoder(qt_enc2)
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last_position2 = None
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pixel1 = neopixel.NeoPixel(qt_enc1, 6, 1)
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pixel1.brightness = 0.2
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pixel1.fill(0xff0000)
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pixel2 = neopixel.NeoPixel(qt_enc2, 6, 1)
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pixel2.brightness = 0.2
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pixel2.fill(0x0000ff)
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while True:
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# negate the position to make clockwise rotation positive
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position1 = -encoder1.position
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position2 = -encoder2.position
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if position1 != last_position1:
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last_position1 = position1
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print("Position 1: {}".format(position1))
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if not button1.value and not button_held1:
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button_held1 = True
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pixel1.brightness = 0.5
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print("Button 1 pressed")
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if button1.value and button_held1:
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button_held1 = False
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pixel1.brightness = 0.2
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print("Button 1 released")
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if position2 != last_position2:
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last_position2 = position2
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print("Position 2: {}".format(position2))
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if not button2.value and not button_held2:
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button_held2 = True
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pixel2.brightness = 0.5
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print("Button 2 pressed")
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if button2.value and button_held2:
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button_held2 = False
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pixel2.brightness = 0.2
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print("Button 2 released")
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