handwired/numpad20 Refactor and Configurator support (#4589)

* handwired/numpad20: refactor

- layout macro no longer auto-prepends keycodes with KC_
  - keymaps for this keyboard will now compile in QMK Configurator
- keymap now uses #include QMK_KEYBOARD_H
- deleted unused fn_actions code block

* handwired/numpad20: Configurator support

keyboards/handwired/numpad20/info.json

@@ -0,0 +1,33 @@
+{
+  "keyboard_name": "numpad20 handwired",
+  "url": "",
+  "maintainer": "qmk",
+  "width": 4,
+  "height": 5,
+  "layouts": {
+    "LAYOUT": {
+      "layout": [
+        {"label":"K00", "x":0, "y":0},
+        {"label":"K01", "x":1, "y":0},
+        {"label":"K02", "x":2, "y":0},
+        {"label":"K03", "x":3, "y":0},
+        {"label":"K10", "x":0, "y":1},
+        {"label":"K11", "x":1, "y":1},
+        {"label":"K12", "x":2, "y":1},
+        {"label":"K13", "x":3, "y":1},
+        {"label":"K20", "x":0, "y":2},
+        {"label":"K21", "x":1, "y":2},
+        {"label":"K22", "x":2, "y":2},
+        {"label":"K23", "x":3, "y":2},
+        {"label":"K30", "x":0, "y":3},
+        {"label":"K31", "x":1, "y":3},
+        {"label":"K32", "x":2, "y":3},
+        {"label":"K33", "x":3, "y":3},
+        {"label":"K40", "x":0, "y":4},
+        {"label":"K41", "x":1, "y":4},
+        {"label":"K42", "x":2, "y":4},
+        {"label":"K43", "x":3, "y":4}
+      ]
+    }
+  }
+}

keyboards/handwired/numpad20/keymaps/default/keymap.c

@@ -1,16 +1,11 @@
-#include "numpad20.h"
-
-#define KC_ KC_TRNS
+#include QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
   [0] = LAYOUT(
-    LEFT,RGHT, UP ,DOWN, \
-     P7 , P8 , P9 ,PLUS, \
-     P4 , P5 , P6 ,MINS, \
-     P1 , P2 , P3 , ENT, \
-     P0 ,DOT ,RGHT, TAB \
-    )
-};
-
-const uint16_t PROGMEM fn_actions[] = {
+    KC_LEFT, KC_RGHT, KC_UP,   KC_DOWN, \
+    KC_P7,   KC_P8,   KC_P9,   KC_PLUS, \
+    KC_P4,   KC_P5,   KC_P6,   KC_MINS, \
+    KC_P1,   KC_P2,   KC_P3,   KC_ENT, \
+    KC_P0,   KC_DOT,  KC_RGHT, KC_TAB \
+  )
 };

keyboards/handwired/numpad20/numpad20.h

@@ -10,11 +10,11 @@
     K30, K31, K32, K33, \
     K40, K41, K42, K43 \
     ) { \
-  { KC_##K00, KC_##K01, KC_##K02, KC_##K03 },  \
-  { KC_##K10, KC_##K11, KC_##K12, KC_##K13 },  \
-  { KC_##K20, KC_##K21, KC_##K22, KC_##K23 },  \
-  { KC_##K30, KC_##K31, KC_##K32, KC_##K33 },  \
-  { KC_##K40, KC_##K41, KC_##K42, KC_##K43 }   \
+  { K00, K01, K02, K03 },  \
+  { K10, K11, K12, K13 },  \
+  { K20, K21, K22, K23 },  \
+  { K30, K31, K32, K33 },  \
+  { K40, K41, K42, K43 }   \
 }
 
 #endif