ADPenrose Akemipad Layout Addition (#20957)

* add matrix_diagram.md

* info.json: apply friendly formatting

* add LAYOUT_numpad with reference keymap

keyboards/adpenrose/akemipad/keymaps/default_numpad/keymap.c

@@ -0,0 +1,49 @@
+// Copyright 2022 Arturo Avila (@ADPenrose)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include QMK_KEYBOARD_H
+
+/* Keymap */
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    [0] = LAYOUT_numpad(
+                  MO(1),    MO(2),     MO(3),     KC_DEL,
+                  KC_NUM,   KC_PSLS,   KC_PAST,   KC_PMNS,
+                  KC_P7,    KC_P8,     KC_P9,     KC_PPLS,
+                  KC_P4,    KC_P5,     KC_P6,
+                  KC_P1,    KC_P2,     KC_P3,     KC_PENT,
+        KC_MUTE,  KC_P0,               KC_PDOT
+    ),
+    [1] = LAYOUT_numpad(
+                  KC_TRNS,  CK_DOWN,   CK_UP,     CK_RST,
+                  MU_TOGG,  MU_NEXT,   KC_TRNS,   KC_TRNS,
+                  KC_TRNS,  KC_TRNS,   KC_TRNS,   KC_TRNS,
+                  KC_TRNS,  KC_TRNS,   KC_TRNS,
+                  KC_TRNS,  KC_TRNS,   KC_TRNS,   KC_TRNS,
+        CK_TOGG,  KC_TRNS,             KC_TRNS
+    ),
+    [2] = LAYOUT_numpad(
+                  KC_TRNS,  KC_TRNS,   KC_TRNS,   KC_TRNS,
+                  KC_TRNS,  KC_TRNS,   KC_TRNS,   KC_TRNS,
+                  KC_TRNS,  KC_TRNS,   KC_TRNS,   KC_TRNS,
+                  KC_TRNS,  KC_TRNS,   KC_TRNS,
+                  KC_TRNS,  KC_TRNS,   KC_TRNS,   KC_TRNS,
+        KC_TRNS,  KC_TRNS,             KC_TRNS
+    ),
+    [3] = LAYOUT_numpad(
+                  QK_BOOT,  KC_TRNS,   KC_TRNS,   KC_TRNS,
+                  KC_TRNS,  KC_TRNS,   KC_TRNS,   KC_TRNS,
+                  KC_TRNS,  KC_TRNS,   KC_TRNS,   KC_TRNS,
+                  KC_TRNS,  KC_TRNS,   KC_TRNS,
+                  KC_TRNS,  KC_TRNS,   KC_TRNS,   KC_TRNS,
+        KC_TRNS,  KC_TRNS,             KC_TRNS
+    )
+};
+
+#if defined(ENCODER_MAP_ENABLE)
+const uint16_t PROGMEM encoder_map[][NUM_ENCODERS][NUM_DIRECTIONS] = {
+    [0] = { ENCODER_CCW_CW(KC_VOLD, KC_VOLU) },
+    [1] = { ENCODER_CCW_CW(RGB_HUD, RGB_HUI) },
+    [2] = { ENCODER_CCW_CW(RGB_SAD, RGB_SAI) },
+    [3] = { ENCODER_CCW_CW(RGB_VAD, RGB_VAI) }
+};
+#endif

keyboards/adpenrose/akemipad/keymaps/default_numpad/readme.md

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+# The default_numpad keymap for the AkemiPad
+
+
+## Features
+- Audio Click and Music Mode capabilities.
+- RGB Matrix Lighting (cycles left-right and up-down).
+- Encoder Map feature.
+
+### Disclaimer
+The AkemiPad has multiple layout options (each one with its own LED positions), but this keymap does not take that into consideration.
+If you want to select an specific layout (and see how the LEDs turn on and off accordingly), you
+should use the [via keymap](../via).

keyboards/adpenrose/akemipad/keymaps/default_numpad/rules.mk

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+ENCODER_MAP_ENABLE = yes