QMK Lighting layers

/*  https://www.reddit.com/r/olkb/comments/pov2m0/preonic_rev_3_hoping_to_get_creative_with/
 *  Code for lighting layers.
 *  This goes into keymap.c
 */

const rgblight_segment_t PROGMEM my_raise_layer[] = RGBLIGHT_LAYER_SEGMENTS(
    {2, 1, HSV_RED},  // Light 1 LED, starting with LED 2.  BotRight corner
    {3, 1, HSV_RED},  // Light 1 LED, starting with LED 3.  TopRight corner
    {6, 1, HSV_RED},  // Light 1 LED, starting with LED 6.  TopLeft corner
    {7, 1, HSV_RED}   // Light 1 LED, starting with LED 7.  BotLeft corner
);