add handwired/swiftrax/retropad (#10331)

* add retropad

* fix indicator leds

* fix bootmagic

* fix led indicators

* fix keymap

* fix keymap

* fix keymap

* fix keymap

* fix license headers

* Apply suggestions from code review

Co-authored-by: Drashna Jaelre <drashna@live.com>

* Apply suggestions from code review

Co-authored-by: Ryan <fauxpark@gmail.com>

Co-authored-by: Swiftrax <swiftrax@gmail.com>
Co-authored-by: Drashna Jaelre <drashna@live.com>
Co-authored-by: Ryan <fauxpark@gmail.com>

1 files changed, 69 insertions, 0 deletions

diff --git a/keyboards/handwired/swiftrax/retropad/keymaps/default/keymap.c b/keyboards/handwired/swiftrax/retropad/keymaps/default/keymap.c
new file mode 100644
index 000000000..8b9992e1d
--- /dev/null
+++ b/keyboards/handwired/swiftrax/retropad/keymaps/default/keymap.c
@@ -0,0 +1,69 @@
+  /* Copyright 2020 swiftrax
+ *
+ * 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
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+
+[0] = LAYOUT(
+  TO(1), //windows
+  KC_MSTP, KC_MPLY,
+  KC_MPRV, KC_MNXT),
+
+[1] = LAYOUT( //macOS
+  TO(2),
+  KC_MSTP, KC_MPLY,
+  KC_MRWD, KC_MFFD),
+
+[2] = LAYOUT(
+  TO(0),
+  KC_HOME, KC_PGUP,
+  KC_END,  KC_PGDN),
+};
+
+void encoder_update_user(uint8_t index, bool clockwise) {
+  if(IS_LAYER_ON(2)){
+    if (clockwise)
+      tap_code(KC_LEFT);
+    else 
+      tap_code(KC_RGHT);
+  }
+  else{
+    if(clockwise)
+      tap_code(KC_VOLU);
+    else
+      tap_code(KC_VOLD);
+  }
+}
+
+void matrix_init_user(void) {
+  // set top LED to output and off (active low)
+  setPinOutput(D5);
+  writePinHigh(D5);
+  // set middle LED to output and off (active low)
+  setPinOutput(D4);
+  writePinHigh(D4);
+  // set bottom LED to output and off (active low)
+  setPinOutput(D3);
+  writePinHigh(D3);
+}
+
+// write to above indicators in a binary fashion based on current layer
+layer_state_t layer_state_set_user(layer_state_t state) {
+    writePin(D5, get_highest_layer(state));
+    writePin(D4, !layer_state_cmp(state, 1));
+    writePin(D3, !layer_state_cmp(state, 2));
+    return state;
+}
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