qmk_firmware/keyboards/dichotemy/dichotemy.h

#ifndef DICHOTEMY_H
#define DICHOTEMY_H

#include "quantum.h"
#include "matrix.h"
#include "backlight.h"
#include <stddef.h>

#define red_led_off   PORTF |= (1<<5)
#define red_led_on    PORTF &= ~(1<<5)
#define blu_led_off   PORTF |= (1<<4)
#define blu_led_on    PORTF &= ~(1<<4)
#define grn_led_off   PORTD |= (1<<1)
#define grn_led_on    PORTD &= ~(1<<1)

#define set_led_off     red_led_off; grn_led_off; blu_led_off
#define set_led_red     red_led_on;  grn_led_off; blu_led_off
#define set_led_blue    red_led_off; grn_led_off; blu_led_on
#define set_led_green   red_led_off; grn_led_on;  blu_led_off
#define set_led_yellow  red_led_on;  grn_led_on;  blu_led_off
#define set_led_magenta red_led_on;  grn_led_off; blu_led_on
#define set_led_cyan    red_led_off; grn_led_on;  blu_led_on
#define set_led_white   red_led_on;  grn_led_on;  blu_led_on

/*
#define LED_B 5
#define LED_R 6
#define LED_G 7

#define all_leds_off PORTF &= ~(1<<LED_B) & ~(1<<LED_R) & ~(1<<LED_G)

#define red_led_on   PORTF |= (1<<LED_R)
#define red_led_off  PORTF &= ~(1<<LED_R)
#define grn_led_on   PORTF |= (1<<LED_G)
#define grn_led_off  PORTF &= ~(1<<LED_G)
#define blu_led_on   PORTF |= (1<<LED_B)
#define blu_led_off  PORTF &= ~(1<<LED_B)

#define set_led_off     PORTF &= ~(1<<LED_B) & ~(1<<LED_R) & ~(1<<LED_G)
#define set_led_red     PORTF = PORTF & ~(1<<LED_B) & ~(1<<LED_G) | (1<<LED_R)
#define set_led_blue    PORTF = PORTF & ~(1<<LED_G) & ~(1<<LED_R) | (1<<LED_B)
#define set_led_green   PORTF = PORTF & ~(1<<LED_B) & ~(1<<LED_R) | (1<<LED_G)
#define set_led_yellow  PORTF = PORTF & ~(1<<LED_B) | (1<<LED_R) | (1<<LED_G)
#define set_led_magenta PORTF = PORTF & ~(1<<LED_G) | (1<<LED_R) | (1<<LED_B)
#define set_led_cyan    PORTF = PORTF & ~(1<<LED_R) | (1<<LED_B) | (1<<LED_G)
#define set_led_white   PORTF |= (1<<LED_B) | (1<<LED_R) | (1<<LED_G)
*/

// This a shortcut to help you visually see your layout.
// The first section contains all of the arguements
// The second converts the arguments into a two-dimensional array
#define LAYOUT( \
  k00, k01, k02, k03, k04, k05,      k06, k07, k08, k09, k0A, k0B, \
  k10, k11, k12, k13, k14, k15,      k16, k17, k18, k19, k1A, k1B, \
  k20, k21, k22, k23, k24, k25,      k26, k27, k28, k29, k2A, k2B, \
                 k33, k34, k35,      k36, k37, k38,      \
                 k43, k44, k45,      k46, k47, k48       \
) \
{ \
	{ k00,   k01,   k02,   k03,   k04,   k05,      k06,   k07,   k08,   k09,   k0A,   k0B   }, \
	{ k10,   k11,   k12,   k13,   k14,   k15,      k16,   k17,   k18,   k19,   k1A,   k1B   }, \
	{ k20,   k21,   k22,   k23,   k24,   k25,      k26,   k27,   k28,   k29,   k2A,   k2B   }, \
	{ KC_NO, KC_NO, KC_NO, k33,   k34,   k35,      k36,   k37,   k38,   KC_NO, KC_NO, KC_NO }, \
	{ KC_NO, KC_NO, KC_NO, k43,   k44,   k45,      k46,   k47,   k48,   KC_NO, KC_NO, KC_NO }  \
}

#endif