RGB underglow support for JJ40, clean up redundant code in Mechmini keymap (#2196)

* Cleanup Mechmini keymap. Once the custom RGB function is defined, there is no need to manually handle RGB code.

* Change default to KEYMAP_MIT, not KEYMAP_OFFSET

* Add custom RGB code for JJ40

* Reset Mechmini advertised power draw to 500. Will have to test actual maximum power draw later.

* RGB working on JJ40.

* Fix: saturation increase/decrease flipped

* Add new directory for my custom keymap with RGB keycodes

* Swap LAlt and LGUI

* Update JJ40 max power draw with measured value

* Update: fun40 rules.mk to enable underglow; earlier failed Travis CI

1 files changed, 5 insertions, 2 deletions

diff --git a/keyboards/mechmini/config.h b/keyboards/mechmini/config.h
index e7004608e..6a4523f85 100644
--- a/keyboards/mechmini/config.h
+++ b/keyboards/mechmini/config.h
@@ -30,12 +30,15 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define MATRIX_ROWS 8
 #define MATRIX_COLS 15
 
+#define NO_UART 1
+
+/* RGB underglow */
+// The RGB_DI_PIN value seems to be shared between all PS2AVRGB boards.
+// The same pin is used on the JJ40, at least.
 #define RGBLED_NUM 16
 #define RGBLIGHT_ANIMATIONS
 #define RGB_DI_PIN E2
 
-#define NO_UART 1
-
 /* key combination for command */
 #define IS_COMMAND() (keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)))