Keymap: Nojjan atreus (#3822)

* Add support for my Falbatech Atreus

This is currently the default Atreus keyboard layout, but I will
eventually customize it to match my Ergodox layout.

* Address review comments

* More review comments fixed

* More review comments fixed

keyboards/atreus/keymaps/nojjan/config.h

@@ -0,0 +1,10 @@
+#pragma once
+
+#undef MATRIX_ROW_PINS
+#undef MATRIX_COL_PINS
+#undef UNUSED_PINS
+
+// Pin configuration for falbatech atreus
+#define MATRIX_ROW_PINS { D0, D1, D3, D2 }
+#define MATRIX_COL_PINS { D7, C6, B5, B4, E6, D4, B6, F6, F7, D6, B7 }
+#define UNUSED_PINS

keyboards/atreus/keymaps/nojjan/keymap.c

@@ -0,0 +1,61 @@
+// this is the style you want to emulate.
+// This is the canonical layout file for the Quantum project. If you want to add another keyboard,
+
+#include QMK_KEYBOARD_H
+
+// Each layer gets a name for readability, which is then used in the keymap matrix below.
+// The underscores don't mean anything - you can have a layer called STUFF or any other name.
+// Layer names don't all need to be of the same length, obviously, and you can also skip them
+// entirely and just use numbers.
+#define _QW 0
+#define _RS 1
+#define _LW 2
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+[_QW] = LAYOUT( /* Qwerty */
+  KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,                      KC_Y,    KC_U,    KC_I,    KC_O,    KC_P    ,
+  KC_A,    KC_S,    KC_D,    KC_F,    KC_G,                      KC_H,    KC_J,    KC_K,    KC_L,    KC_SCLN ,
+  KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,                      KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH ,
+  KC_ESC, KC_TAB, KC_LGUI,  KC_LSFT, KC_BSPC,  KC_LCTL, KC_LALT, KC_SPC,  MO(_RS), KC_MINS, KC_QUOT, KC_ENT  ),
+/*
+ *  !       @     up     {    }        ||     pgup    7     8     9    *
+ *  #     left   down  right  $        ||     pgdn    4     5     6    +
+ *  [       ]      (     )    &        ||       `     1     2     3    \
+ * lower  insert super shift bksp ctrl || alt space   fn    .     0    =
+ */
+[_RS] = LAYOUT( /* [> RAISE <] */
+  KC_EXLM, KC_AT,   KC_UP,   KC_LCBR, KC_RCBR,                   KC_PGUP, KC_7,    KC_8,   KC_9, KC_ASTR ,
+  KC_HASH, KC_LEFT, KC_DOWN, KC_RGHT, KC_DLR,                    KC_PGDN, KC_4,    KC_5,   KC_6, KC_PLUS ,
+  KC_LBRC, KC_RBRC, KC_LPRN, KC_RPRN, KC_AMPR,                   KC_GRV,  KC_1,    KC_2,   KC_3, KC_BSLS ,
+  TG(_LW), KC_INS,  KC_LGUI, KC_LSFT, KC_BSPC, KC_LCTL, KC_LALT, KC_SPC,  KC_TRNS, KC_DOT, KC_0, KC_EQL  ),
+/*
+ * insert home   up  end   pgup       ||      up     F7    F8    F9   F10
+ *  del   left  down right pgdn       ||     down    F4    F5    F6   F11
+ *       volup             reset      ||             F1    F2    F3   F12
+ *       voldn  super shift bksp ctrl || alt space   L0  prtsc scroll pause
+ */
+[_LW] = LAYOUT( /* [> LOWER <] */
+  KC_INS,  KC_HOME, KC_UP,   KC_END,  KC_PGUP,                   KC_UP,   KC_F7,   KC_F8,   KC_F9,   KC_F10  ,
+  KC_DELT, KC_LEFT, KC_DOWN, KC_RGHT, KC_DOWN,                   KC_DOWN, KC_F4,   KC_F5,   KC_F6,   KC_F11  ,
+  KC_NO,   KC_VOLU, KC_NO,   KC_NO,   RESET,                     KC_NO,   KC_F1,   KC_F2,   KC_F3,   KC_F12  ,
+  KC_NO,   KC_VOLD, KC_LGUI, KC_LSFT, KC_BSPC, KC_LCTL, KC_LALT, KC_SPC,  TO(_QW), KC_PSCR, KC_SLCK, KC_PAUS )
+};
+
+const uint16_t PROGMEM fn_actions[] = {
+
+};
+
+const macro_t *action_get_macro(keyrecord_t *record, uint8_t id, uint8_t opt)
+{
+  // MACRODOWN only works in this function
+      switch(id) {
+        case 0:
+          if (record->event.pressed) {
+            register_code(KC_RSFT);
+          } else {
+            unregister_code(KC_RSFT);
+          }
+        break;
+      }
+    return MACRO_NONE;
+};