[Keyboard] Add Keyboard Rartlite (#11866)

keyboards/rart/rartlite/rartlite.c

@@ -0,0 +1,26 @@
+/* Copyright 2021 Alabahuy
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include "rartlite.h"
+
+void keyboard_pre_init_kb(void) {
+  setPinOutput(B1);
+  
+  keyboard_pre_init_user();
+}
+
+layer_state_t layer_state_set_kb(layer_state_t state) {
+    writePin(B1, layer_state_cmp(state, 1));
+    return layer_state_set_user(state);
+}