Add kmini (#3386)

* Add kmini

* Change keyboard USB description

keyboards/kmini/kmini.c

@@ -0,0 +1,53 @@
+/* Copyright 2018 Maarten Dekkers <maartenwut@gmail.com>
+ *
+ * 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 "kmini.h"
+
+void matrix_init_kb(void) {
+    // put your keyboard start-up code here
+    // runs once when the firmware starts up
+    led_init_ports();
+    matrix_init_user();
+}
+
+void matrix_scan_kb(void) {
+    // put your looping keyboard code here
+    // runs every cycle (a lot)
+
+    matrix_scan_user();
+}
+
+bool process_record_kb(uint16_t keycode, keyrecord_t *record) {
+    // put your per-action keyboard code here
+    // runs for every action, just before processing by the firmware
+
+    return process_record_user(keycode, record);
+}
+
+void led_init_ports(void) {
+    DDRB |= (1<<1); // OUT
+    DDRB |= (1<<2); // OUT
+    DDRB |= (1<<3); // OUT
+}
+
+/* LED pin configuration
+ * Caps Lock: Low B1
+ * Side1: Low B3
+ * Side2: Low B2
+ */
+void led_set_kb(uint8_t usb_led) {
+    led_set_user(usb_led);
+}
+