[Keymap] Underglow support for Launchpad (#5340)

* added my launchpad

* updated keymap with legends and fixed layout errors

* Added default keymap with added layer for RGB controls and included the necessary config code

* fixed layer orders

* removed my personal keymap to clean PR

* missed an underscore

* updated readme

* removed more unnecessary code

* moved RGB code to its own config phone

* moved underglow info to its own readme

* removed redundant code from default_rgb config.h file, included QMK KEYBOARD H in place of initial defines in keymap.c

* reverted launchpad config

* removing the = because I can't figure out why its there

* Revert "removing the = because I can't figure out why its there"

This reverts commit e3b5e6d568e7225635844ba617aaef4f77727ce6.

* reverted rev1/config.h

* reverted all files I should not have touched

* removing redundant code in rules.mk

* readibility improvements to keymap

keyboards/launchpad/keymaps/default_rgb/config.h

@@ -0,0 +1,9 @@
+#pragma once
+
+/* Underlight Configuration */
+#define RGB_DI_PIN F4
+#define RGBLIGHT_ANIMATIONS
+#define RGBLED_NUM 2  // Number of LEDs
+#define RGBLIGHT_HUE_STEP 10
+#define RGBLIGHT_SAT_STEP 17
+#define RGBLIGHT_VAL_STEP 17

keyboards/launchpad/keymaps/default_rgb/keymap.c

@@ -0,0 +1,76 @@
+// Below layout is based upon /u/That-Canadian's planck layout
+#include QMK_KEYBOARD_H
+
+extern keymap_config_t keymap_config;
+
+// Each layer gets a name for readability, which is then used in the keymap matrix below.
+// The underscores don't mean anything - you can have a layer called STUFF or any other name.
+// Layer names don't all need to be of the same length, obviously, and you can also skip them
+// entirely and just use numbers.
+#define _QWERTY 0
+#define _RGB 1
+#define _FUNC 15
+
+// Defines for task manager and such
+#define CALTDEL LCTL(LALT(KC_DEL))
+#define TSKMGR LCTL(LSFT(KC_ESC))
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+
+    /* Qwerty
+     * ,-------------.
+     * |   1  |  2   |
+     * |------+------|
+     * |   3  |  4   |
+     * |------+------|
+     * |   5  |  6   |
+     * |------+------|
+     * | FUNC | RGB  |
+     * `-------------'
+     */
+    [_QWERTY] = LAYOUT( \
+        KC_1,      KC_2, \
+        KC_3,      KC_4, \
+        KC_5,      KC_6, \
+        MO(_FUNC), TG(_RGB) \
+      ),
+
+    /* RGB
+     * ,-------------.
+     * | Mode-| Mode+|
+     * |------+------|
+     * | HUE- | HUE+ |
+     * |------+------|
+     * | SAT- | SAT+ |
+     * |------+------|
+     * |RGBTOG|      |
+     * `-------------'
+     */
+    [_RGB] = LAYOUT( \
+        RGB_RMOD, RGB_MOD, \
+        RGB_HUD,  RGB_HUI, \
+        RGB_SAD,  RGB_SAI, \
+        RGB_TOG,  KC_TRNS \
+      ),
+
+    /* Function
+     * ,-------------.
+     * |   Q  |CALDEL|
+     * |------+------|
+     * |   A  |TSKMGR|
+     * |------+------|
+     * |   Z  |  X   |
+     * |------+------|
+     * |      |  C   |
+     * `-------------'
+     */
+    [_FUNC] = LAYOUT( \
+        KC_Q,    CALTDEL, \
+        KC_A,    TSKMGR, \
+        KC_Z,    KC_X, \
+        _______, KC_C \
+      )
+
+};
+
+void matrix_init_user(void) {}

keyboards/launchpad/keymaps/default_rgb/rules.mk

@@ -0,0 +1 @@
+RGBLIGHT_ENABLE = yes        # Enable WS2812 RGB underlight.