Improve default layout of 9key and give example macro

keyboards/9key/keymaps/default/keymap.c

@@ -2,45 +2,63 @@
 
 // Tap Dance Declarations
 enum {
-  ENT_5 = 0
+  ENT_5 = 0,
+  ZERO_7
+};
+
+// Macro Declarations
+enum {
+  DBL_0 = 0
 };
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
 
 /* LAYER 0
- * ,-----------------.
+ * ,-----------------------.
  * |   1   |   2   |   3   |
- * |-----+-----+-----|
- * |  4  |5/ENT|  6  | Dbl Tap 5 for Enter
- * |-----+-----+-----|
- * |  7  |  8  | FN  | 
- * `-----------------'
+ * |-------+-------+-------|
+ * |   4   | 5/ENT |   6   | Dbl Tap 5 for Enter
+ * |-------+-------+-------|
+ * |  7/0  |   8   | 9/FN  | 7/0 = Dbl Tap 7 for 0  -  9/FN = Hold 9 for FN
+ * `-----------------------'
  */
 [0] = KEYMAP( \
   KC_1,       KC_2,      KC_3,       \
   KC_4,       TD(ENT_5), KC_6,       \
-  KC_7, KC_8, MO(1) \
+  TD(ZERO_7), KC_8,      LT(1, KC_9) \
 ),
 
 /* LAYER 1
- * ,-----------------.
- * |  9  |  0  |  -  |
- * |-----+-----+-----|
- * |  +  |  *  |  /  |
- * |-----+-----+-----|
- * | F1  | F2  |     |
- * `-----------------'
+ * ,-----------------------.
+ * |  ESC  |   +   |   -   |
+ * |-------+-------+-------|
+ * |  BSPC |   *   |   /   |
+ * |-------+-------+-------|
+ * |  00   |   .   |       |
+ * `-----------------------'
  */
 [1] = KEYMAP( \
-  KC_9,    KC_0,    KC_MINS, \
-  KC_PLUS, KC_ASTR, KC_SLSH, \
-  KC_F1,   KC_F2,   KC_TRNS  \
+  KC_ESC,   KC_PLUS, KC_MINS, \
+  KC_BSPC,  KC_ASTR, KC_SLSH, \
+  M(DBL_0), KC_DOT,  KC_TRNS  \
 )
 
 };
 
 qk_tap_dance_action_t tap_dance_actions[] = {
-  [ENT_5] = ACTION_TAP_DANCE_DOUBLE(KC_5, KC_ENT)
+  [ENT_5] = ACTION_TAP_DANCE_DOUBLE(KC_5, KC_ENT),
+  [ZERO_7] = ACTION_TAP_DANCE_DOUBLE(KC_7, KC_0)
+};
+
+const macro_t *action_get_macro(keyrecord_t *record, uint8_t id, uint8_t opt) {
+  if (record->event.pressed) {
+      switch(id) {
+          case DBL_0:
+              SEND_STRING("00");
+              return false;
+      }
+  }
+  return MACRO_NONE;
 };
 
 void matrix_init_user(void) {