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- #include <HID-Project.h>
- #include <HID-Settings.h>
- #include <TimerOne.h>
-
- //debounce milliseconds
- const int debounce = 5;
- //Switch Pins
- const byte k[4] = { 4, 5, 6, 7 };
- //Switch status
- boolean s[4] = { 0, 0, 0, 0 };
-
- //M for Media Key, K for Keyboard
- const char codetype[4] = { 'K', 'K', 'K', 'K' };
-
- //Keycodes
- const ConsumerKeycode ccode[4] = { MEDIA_VOLUME_MUTE,
- MEDIA_VOLUME_MUTE,
- MEDIA_PLAY_PAUSE,
- MEDIA_PLAY_PAUSE
- };
-
- const KeyboardKeycode kcode[4] = { KEY_LEFT_ARROW,
- KEY_DOWN_ARROW,
- KEY_UP_ARROW,
- KEY_RIGHT_ARROW
- };
- byte col = 0;
- byte leds[2][2];
- const int keyfade = 40;
- const char curve[] = {
- 0, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 5, 5, 6, 6, 7, 7, 7, 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 7, 7, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1
- };
- const int fadecount = 2;
- const unsigned long breathcount = 5000;
- int fadecounter = 0;
- unsigned long breathcounter = 0;
- byte pass = 1;
-
- // pin[xx] on led matrix connected to nn on Arduino (-1 is dummy to make array start at pos 1)
- int pins[6] = {
- -1, 18, 19, 20, 21
- };
-
- // col[xx] of leds = pin yy on led matrix
- int cols[2] = {
- pins[2], pins[1]
- };
-
- // row[xx] of leds = pin yy on led matrix
- int rows[2] = {
- pins[4], pins[3]
- };
-
-
-
- void setup() {
- Keyboard.begin();
- Consumer.begin();
- setupLeds();
- onLeds();
- //setup inputs, turn on pullups
- for (int i = 0; i < 4; i++) {
- pinMode(k[i], INPUT);
- digitalWrite(k[i], 1);
- }
- }
-
- void loop() {
- CheckKeys();
- delay(debounce);
-
- fadecounter++;
- if (fadecounter > fadecount) {
- fadecounter = 0;
- fade();
- }
- breathcounter++;
- if (breathcounter > breathcount) {
- breathcounter = 0;
- fadecounter = 0;
- breath();
- }
- }
-
- void CheckKeys() {
- for (int i = 0; i < 4; i++) {
- if (codetype[i] == 'M') {
- if (digitalRead(k[i]) == 0) {
- if (s[i] == 0) {
- Consumer.press((ccode[i]));
- s[i] = 1;
- byte row = i / 2;
- byte col = i % 2;
- leds[col][row] = 60;
- breathcounter = 0;
- }
- }
- else {
- if (s[i] == 1) {
- s[i] = 0;
- Consumer.release((ccode[i]));
- byte row = i / 2;
- byte col = i % 2;
- leds[col][row] = 60;
- breathcounter = 0;
- }
- }
- }
- if (codetype[i] == 'K') {
- if (digitalRead(k[i]) == 0) {
- if (s[i] == 0) {
- Keyboard.press((kcode[i]));
- s[i] = 1;
- byte row = i / 2;
- byte col = i % 2;
- leds[col][row] = 60;
- breathcounter = 0;
- }
- }
- else {
- if (s[i] == 1) {
- s[i] = 0;
- Keyboard.release((kcode[i]));
- byte row = i / 2;
- byte col = i % 2;
- leds[col][row] = 60;
- breathcounter = 0;
- }
- }
- }
- }
- }
-
- void setupLeds() {
- // sets the pins as output
- for (int i = 1; i <= 4; i++) {
- pinMode(pins[i], OUTPUT);
- }
-
- // set up cols and rows
- for (int i = 1; i <= 2; i++) {
- digitalWrite(cols[i - 1], HIGH);
- }
-
- for (int i = 1; i <= 2; i++) {
- digitalWrite(rows[i - 1], LOW);
- }
-
- clearLeds();
-
- // Set refresh rate (interrupt timeout period)
- Timer1.initialize(500);
- // Set interrupt routine to be called
- Timer1.attachInterrupt(display);
- }
-
- void clearLeds() {
- // Clear display array
- for (int i = 0; i < 2; i++) {
- for (int j = 0; j < 2; j++) {
- leds[i][j] = 0;
- }
- }
- }
-
- void onLeds() {
- for (int i = 0; i < 2; i++) {
- for (int j = 0; j < 2; j++) {
- leds[i][j] = keyfade;
- }
- }
- }
-
- void fade() {
- for (int i = 0; i < 2; i++) {
- for (int j = 0; j < 2; j++) {
- if (leds[i][j] > 0) {
- leds[i][j] = leds[i][j] - 1;
- }
- }
- }
- }
-
- void breath() {
- for (int i = 0; i < 2; i++) {
- for (int j = 0; j < 2; j++) {
- leds[i][j] = 60;
- }
- }
- }
-
- // Interrupt routine
- void display() {
- digitalWrite(cols[col], HIGH); // Turn whole previous column off
- col++;
- if (col == 2) {
- col = 0;
- pass++;
- if (pass > 8) {
- pass = 1;
- }
- }
- for (int row = 0; row < 2; row++) {
- if (curve[leds[col][row]] > pass) {
- digitalWrite(rows[row], HIGH); // Turn on this led
- }
- else {
- digitalWrite(rows[row], LOW); // Turn off this led
- }
- }
- digitalWrite(cols[col], LOW); // Turn whole column on at once (for equal lighting times)
- }
-
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