1  # SPDX-FileCopyrightText: 2021 John Park
 2  # SPDX-License-Identifier: MIT
 3  
 4  # I2C rotary encoder multiple test example.
 5  # solder the A0 jumper on the second QT Rotary Encoder board
 6  
 7  import board
 8  from adafruit_seesaw import seesaw, rotaryio, digitalio, neopixel
 9  
10  qt_enc1 = seesaw.Seesaw(board.I2C(), addr=0x36)
11  qt_enc2 = seesaw.Seesaw(board.I2C(), addr=0x37)
12  
13  qt_enc1.pin_mode(24, qt_enc1.INPUT_PULLUP)
14  button1 = digitalio.DigitalIO(qt_enc1, 24)
15  button_held1 = False
16  
17  qt_enc2.pin_mode(24, qt_enc2.INPUT_PULLUP)
18  button2 = digitalio.DigitalIO(qt_enc2, 24)
19  button_held2 = False
20  
21  encoder1 = rotaryio.IncrementalEncoder(qt_enc1)
22  last_position1 = None
23  
24  encoder2 = rotaryio.IncrementalEncoder(qt_enc2)
25  last_position2 = None
26  
27  pixel1 = neopixel.NeoPixel(qt_enc1, 6, 1)
28  pixel1.brightness = 0.2
29  pixel1.fill(0xff0000)
30  
31  pixel2 = neopixel.NeoPixel(qt_enc2, 6, 1)
32  pixel2.brightness = 0.2
33  pixel2.fill(0x0000ff)
34  
35  
36  while True:
37  
38      # negate the position to make clockwise rotation positive
39      position1 = -encoder1.position
40      position2 = -encoder2.position
41  
42      if position1 != last_position1:
43          last_position1 = position1
44          print("Position 1: {}".format(position1))
45  
46      if not button1.value and not button_held1:
47          button_held1 = True
48          pixel1.brightness = 0.5
49          print("Button 1 pressed")
50  
51      if button1.value and button_held1:
52          button_held1 = False
53          pixel1.brightness = 0.2
54          print("Button 1 released")
55  
56  
57      if position2 != last_position2:
58          last_position2 = position2
59          print("Position 2: {}".format(position2))
60  
61      if not button2.value and not button_held2:
62          button_held2 = True
63          pixel2.brightness = 0.5
64          print("Button 2 pressed")
65  
66      if button2.value and button_held2:
67          button_held2 = False
68          pixel2.brightness = 0.2
69          print("Button 2 released")