qmk-firmware/keyboards/cu75/cu75.h

#ifndef CU75_H
#define CU75_H

#include "quantum.h"
#include "matrix.h"
#include <avr/sfr_defs.h>

typedef struct RGB_Color {
    uint16_t red;
    uint16_t green;
    uint16_t blue;
} RGB_Color;

typedef struct Layer_Info {
    uint32_t layer;
    uint32_t mask;
    RGB_Color color;
} Layer_Info;

extern const uint32_t layer_count;
extern const Layer_Info layer_info[];

enum action_functions {
    LFK_CLEAR = 0,          // Resets all layers
    LFK_ESC_TILDE,          // esc+lshift = ~
    LFK_SET_DEFAULT_LAYER,  // changes and saves current base layer to eeprom
    LFK_CLICK_TOGGLE,       // Adjusts click duration
    LFK_CLICK_FREQ_HIGHER,  // Adjusts click frequency
    LFK_CLICK_FREQ_LOWER,   // Adjusts click frequency
    LFK_CLICK_TIME_LONGER,  // Adjusts click duration
    LFK_CLICK_TIME_SHORTER, // Adjusts click duration
    LFK_DEBUG_SETTINGS,     // prints LED and click settings to HID
    LFK_LED_TEST            // cycles through switch and RGB LEDs
};

#define CLICK_HZ 500
#define CLICK_MS 2
#define CLICK_ENABLED 0

void reset_keyboard_kb(void);
void click(uint16_t freq, uint16_t duration);

/* Vanilla Keymap */
// This a shortcut to help you visually see your layout.
/*
* ,-------------------------------------------------------------------------------.
* | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 0A | 0B | 0C | 0D | 0E | 0F | 0G |
* |-------------------------------------------------------------------------------|
* | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 1A | 1B | 1C | 1D |   1E    | 1G |
* |-------------------------------------------------------------------------------|
* | 21   | 22 |23 | 24 | 25 | 26 | 27 | 28 | 29 | 2A | 2B | 2C | 2D |   2E   | 2F |
* |-------------------------------------------------------------------------------|
* | 31    | 32 |33 | 34 | 35 | 36 | 37 | 38 | 39 | 3A | 3B | 3C |      3D    | 3F |
* |-------------------------------------------------------------------------------|
* | 41      | 42 |43 | 45 | 46 | 47 | 48 | 49 | 4A | 4B | 4C |    4D    | 4E | 4F |
* |-------------------------------------------------------------------------------|
* | 51  |  52  | 53  | 54 |         57        | 59 | 5A | 5B | 5C |  5D | 5E | 5F |
* `-------------------------------------------------------------------------------'
*/
// The first section contains all of the arguements
// The second converts the arguments into a two-dimensional array
#define LAYOUT( \
    k01, k02, k03, k04, k05, k06, k07, k08, k09, k0A, k0B, k0C, k0D, k0E, k0F, k0G, \
    k11, k12, k13, k14, k15, k16, k17, k18, k19, k1A, k1B, k1C, k1D, k1E,      k1G, \
    k21, k22, k23, k24, k25, k26, k27, k28, k29, k2A, k2B, k2C, k2D, k2E, k2F, \
    k31, k32, k33, k34, k35, k36, k37, k38, k39, k3A, k3B, k3C, k3D,      k3F, \
    k41,      k43, k44, k45, k46, k47, k48, k49, k4A, k4B, k4C, k4D, k4E, k4F, \
    k51, k52, k53, k54,           k57,      k59, k5A, k5B, k5C, k5D, k5E, k5F \
) { \
    {k01, k02,   k03, k04,   k05,   k06,   k07, k08,   k09, k0A, k0B, k0C, k0D, k0E,   k0F,   k0G}, \
    {k11, k12,   k13, k14,   k15,   k16,   k17, k18,   k19, k1A, k1B, k1C, k1D, k1E,   KC_NO, k1G}, \
    {k21, k22,   k23, k24,   k25,   k26,   k27, k28,   k29, k2A, k2B, k2C, k2D, k2E,   k2F,   KC_NO}, \
    {k31, k32,   k33, k34,   k35,   k36,   k37, k38,   k39, k3A, k3B, k3C, k3D, KC_NO, k3F,   KC_NO}, \
    {k41, KC_NO, k43, k44,   k45,   k46,   k47, k48,   k49, k4A, k4B, k4C, k4D, k4E,   k4F,   KC_NO}, \
    {k51, k52,   k53, k54, KC_NO, KC_NO,   k57, KC_NO, k59, k5A, k5B, k5C, k5D, k5E,   k5F,   KC_NO}, \
}

#define LAYOUT_all( \
    k01, k02, k03, k04, k05, k06, k07, k08, k09, k0A, k0B, k0C, k0D, k0E, k0F, k0G, \
    k11, k12, k13, k14, k15, k16, k17, k18, k19, k1A, k1B, k1C, k1D, k1E, k1F, k1G, \
    k21, k22, k23, k24, k25, k26, k27, k28, k29, k2A, k2B, k2C, k2D, k2E, k2F, \
    k31, k32, k33, k34, k35, k36, k37, k38, k39, k3A, k3B, k3C, k3D, k3E, k3F, \
    k41, k42, k43, k44, k45, k46, k47, k48, k49, k4A, k4B, k4C, k4D, k4E, k4F, \
    k51, k52, k53, k54,           k57,      k59, k5A, k5B, k5C, k5D, k5E, k5F \
) { \
    {k01, k02, k03, k04,   k05,   k06, k07, k08,   k09, k0A, k0B, k0C, k0D, k0E, k0F,   k0G}, \
    {k11, k12, k13, k14,   k15,   k16, k17, k18,   k19, k1A, k1B, k1C, k1D, k1E, k1F,   k1G}, \
    {k21, k22, k23, k24,   k25,   k26, k27, k28,   k29, k2A, k2B, k2C, k2D, k2E, k2F,   KC_NO}, \
    {k31, k32, k33, k34,   k35,   k36, k37, k38,   k39, k3A, k3B, k3C, k3D, k3E, k3F,   KC_NO}, \
    {k41, k42, k43, k44,   k45,   k46, k47, k48,   k49, k4A, k4B, k4C, k4D, k4E, k4F,   KC_NO}, \
    {k51, k52, k53, k54, KC_NO, KC_NO, k57, KC_NO, k59, k5A, k5B, k5C, k5D, k5E, k5F,   KC_NO}, \
}

#define LAYOUT_iso( \
    k01, k02, k03, k04, k05, k06, k07, k08, k09, k0A, k0B, k0C, k0D, k0E, k0F, k0G, \
    k11, k12, k13, k14, k15, k16, k17, k18, k19, k1A, k1B, k1C, k1D, k1E,      k1G, \
    k21, k22, k23, k24, k25, k26, k27, k28, k29, k2A, k2B, k2C, k2D, k2E, k2F, \
    k31, k32, k33, k34, k35, k36, k37, k38, k39, k3A, k3B, k3C, k3D,      k3F, \
    k41, k42, k43, k44, k45, k46, k47, k48, k49, k4A, k4B, k4C, k4D, k4E, k4F, \
    k51, k52, k53,       k54,  k57,  k59,        k5A, k5B, k5C, k5D, k5E, k5F \
) { \
    {k01, k02,   k03, k04,   k05,   k06,   k07, k08,   k09, k0A, k0B, k0C, k0D, k0E,   k0F,   k0G}, \
    {k11, k12,   k13, k14,   k15,   k16,   k17, k18,   k19, k1A, k1B, k1C, k1D, k1E,   KC_NO, k1G}, \
    {k21, k22,   k23, k24,   k25,   k26,   k27, k28,   k29, k2A, k2B, k2C, k2D, k2E,   k2F,   KC_NO}, \
    {k31, k32,   k33, k34,   k35,   k36,   k37, k38,   k39, k3A, k3B, k3C, k3D, KC_NO, k3F,   KC_NO}, \
    {k41, k42, k43, k44,   k45,   k46,   k47, k48,   k49, k4A, k4B, k4C, k4D, k4E,     k4F,   KC_NO}, \
    {k51, k52,   k53, k54, KC_NO, KC_NO,   k57, KC_NO, k59, k5A, k5B, k5C, k5D, k5E,   k5F,   KC_NO}, \
}

#endif //CU75_H