Ploopynano/jussaw (#20)

* Add jussaw keymap to Ploopy Nano

* Invert drag scroll

keyboards/ploopyco/ploopyco.h

@@ -39,3 +39,5 @@ bool encoder_update_user(uint8_t index, bool clockwise);
 bool encoder_update_kb(uint8_t index, bool clockwise);
 void toggle_drag_scroll(void);
 void cycle_dpi(void);
+
+#define PLOOPY_DRAGSCROLL_INVERT

keyboards/ploopyco/trackball_nano/keymaps/jussaw/keymap.c

@@ -0,0 +1,64 @@
+/* Copyright 2021 Colin Lam (Ploopy Corporation)
+ * Copyright 2020 Christopher Courtney, aka Drashna Jael're  (@drashna) <drashna@live.com>
+ * Copyright 2019 Sunjun Kim
+ * Copyright 2019 Hiroyuki Okada
+ *
+ * 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 QMK_KEYBOARD_H
+
+/* Invert Ploopy Dragscroll*/
+#define PLOOPY_DRAGSCROLL_INVERT
+
+// Dummy
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {{{ KC_NO }}};
+
+void suspend_power_down_user(void) {
+    // Switch off sensor + LED making trackball unable to wake host
+    adns5050_power_down();
+}
+
+void suspend_wakeup_init_user(void) {
+    adns5050_init();
+}
+
+// Add host state drag scroll and dpi cycling
+static bool num_lock_state = false;
+static bool scroll_lock_state = false;
+
+void keyboard_post_init_user(void) {
+    num_lock_state  = host_keyboard_led_state().num_lock;
+    scroll_lock_state  = host_keyboard_led_state().scroll_lock;
+}
+
+bool led_update_user(led_t led_state) {
+    // when scroll lock is pressed, toggle drag scroll state
+    if ( scroll_lock_state != led_state.scroll_lock ) {
+        toggle_drag_scroll();
+        scroll_lock_state = led_state.scroll_lock;
+    }
+
+    // when num lock is pressed, cycle dpi
+    if ( num_lock_state != led_state.num_lock ) {
+        cycle_dpi();
+        num_lock_state = led_state.num_lock;
+    }
+
+    // when all three are enabled, go to bootloader
+    if ( led_state.num_lock && led_state.caps_lock && led_state.scroll_lock ) {
+        reset_keyboard();
+    }
+
+    return true;
+}