qmk_firmware/keyboards/mitosis/mitosis.h

#ifndef MITOSIS_H
#define MITOSIS_H

#include "quantum.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 arguments
// The second converts the arguments into a two-dimensional array
#define LAYOUT( \
  k00, k01, k02, k03, k04,      k05, k06, k07, k08, k09, \
  k10, k11, k12, k13, k14,      k15, k16, k17, k18, k19, \
  k20, k21, k22, k23, k24,      k25, k26, k27, k28, k29, \
       k31, k32, k33, k34,      k35, k36, k37, k38, \
       k41, k42, k43, k44,      k45, k46, k47, k48  \
) \
  {                                                           \
    { k00,   k01, k02, k03, k04, k05, k06, k07, k08, k09   }, \
    { k10,   k11, k12, k13, k14, k15, k16, k17, k18, k19   }, \
    { k20,   k21, k22, k23, k24, k25, k26, k27, k28, k29   }, \
    { KC_NO, k31, k32, k33, k34, k35, k36, k37, k38, KC_NO }, \
    { KC_NO, k41, k42, k43, k44, k45, k46, k47, k48, KC_NO }  \
  }
#endif