1  // SPDX-FileCopyrightText: 2021 Kattni Rembor for Adafruit Industries
 2  //
 3  // SPDX-License-Identifier: MIT
 4  
 5  #include <Adafruit_NeoPixel.h>
 6  #include <RotaryEncoder.h>
 7  #include "HID-Project.h"  // https://github.com/NicoHood/HID
 8  
 9  // Create the neopixel strip with the built in definitions NUM_NEOPIXEL and PIN_NEOPIXEL
10  Adafruit_NeoPixel strip = Adafruit_NeoPixel(NUM_NEOPIXEL, PIN_NEOPIXEL, NEO_GRB + NEO_KHZ800);
11  int16_t neo_brightness = 20; // initialize with 20 brightness (out of 255)
12  
13  RotaryEncoder encoder(PIN_ENCODER_A, PIN_ENCODER_B, RotaryEncoder::LatchMode::FOUR3);
14  // This interrupt will do our encoder reading/checking!
15  void checkPosition() {
16    encoder.tick(); // just call tick() to check the state.
17  }
18  
19  int last_rotary = 0;
20  bool last_button = false;
21  
22  void setup() {
23    Serial.begin(115200);
24    //while (!Serial);
25    delay(100);
26    
27    Serial.println("Rotary Trinkey Surface Dial");
28    
29    // start neopixels
30    strip.begin();
31    strip.setBrightness(neo_brightness);
32    strip.show(); // Initialize all pixels to 'off'
33  
34    attachInterrupt(PIN_ENCODER_A, checkPosition, CHANGE);
35    attachInterrupt(PIN_ENCODER_B, checkPosition, CHANGE);
36    
37    // set up the encoder switch, which is separate from the encoder
38    pinMode(PIN_ENCODER_SWITCH, INPUT_PULLDOWN);
39  
40    // Sends a clean report to the host. This is important on any Arduino type.
41    SurfaceDial.begin();
42  }
43  
44  
45  void loop() {
46    // read encoder
47    int curr_rotary = encoder.getPosition();
48    RotaryEncoder::Direction direction = encoder.getDirection();
49    // read switch
50    bool curr_button = !digitalRead(PIN_ENCODER_SWITCH);
51    
52    if (direction != RotaryEncoder::Direction::NOROTATION) {
53      Serial.print("Encoder value: ");
54      Serial.print(curr_rotary);
55      Serial.print(" direction: ");
56      Serial.print((int)direction);
57  
58      if (direction == RotaryEncoder::Direction::CLOCKWISE) {
59        Serial.println(" Rotate+");
60        SurfaceDial.rotate(40);
61      }
62      if (direction == RotaryEncoder::Direction::COUNTERCLOCKWISE) {
63        Serial.println(" Rotate-");
64        SurfaceDial.rotate(-40);
65      }
66  
67      last_rotary = curr_rotary;
68    }
69  
70    if (curr_button && !last_button) { // switch pressed!
71      Serial.println("Press");
72      SurfaceDial.press();
73    }
74    if (!curr_button && last_button) { // switch released!
75      Serial.println("Release");
76      SurfaceDial.release();
77    }
78    last_button = curr_button;
79  
80    delay(10); // debounce
81  }