[Keyboard] Add 42 keyboard (#7071)

* [Keyboard] Add 42 keyboard

* Apply suggested fixes

* Remove 42.c

* Move keyboard to handwired folder

keyboards/handwired/42/42.h

@@ -0,0 +1,32 @@
+/* Copyright 2019 Angelo Gazzola (nglgzz)
+ *
+ * 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/>.
+ */
+
+#pragma once
+
+#include "quantum.h"
+
+#define ___ KC_NO
+#define LAYOUT( \
+  K00, K01, K02, K03, K04, K05,     K06, K07, K08, K09, K0A, K0B, \
+  K10, K11, K12, K13, K14, K15,     K16, K17, K18, K19, K1A, K1B, \
+  K20, K21, K22, K23, K24, K25,     K26, K27, K28, K29, K2A, K2B, \
+                 K33, K34, K35,     K36, K37, K38 \
+) { \
+  { K00, K01, K02, K03, K04, K05, K06, K07, K08, K09, K0A, K0B }, \
+  { K10, K11, K12, K13, K14, K15, K16, K17, K18, K19, K1A, K1B }, \
+  { K20, K21, K22, K23, K24, K25, K26, K27, K28, K29, K2A, K2B }, \
+  { ___, ___, ___, K33, K34, K35, K36, K37, K38, ___, ___, ___ } \
+}

keyboards/handwired/42/README.md

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+# 42
+
+42-keys ergonomic keyboard running on Adafruit Feather BLE.
+
+![42](https://github.com/nglgzz/42/raw/master/42.jpg)
+
+Keyboard Maintainer: [Angelo Gazzola (nglgzz)](https://github.com/nglgzz)  
+Hardware Supported: 42 (rev2, rev3), Feather 32u4 BLE  
+Hardware Availability: [GitHub](https://github.com/nglgzz/42/)
+
+Make example for this keyboard (after setting up your build environment):
+
+    make handwired/42:default
+
+See the [build environment setup](https://docs.qmk.fm/#/getting_started_build_tools) and the [make instructions](https://docs.qmk.fm/#/getting_started_make_guide) for more information. Brand new to QMK? Start with our [Complete Newbs Guide](https://docs.qmk.fm/#/newbs).

keyboards/handwired/42/config.h

@@ -0,0 +1,42 @@
+#pragma once
+
+#include "config_common.h"
+
+/* USB Device descriptor parameter */
+#define VENDOR_ID       0xFEED
+#define PRODUCT_ID      0x0000
+#define DEVICE_VER      0x0003
+#define MANUFACTURER    nglgzz
+#define PRODUCT         42
+#define DESCRIPTION     BT
+
+/* key matrix size */
+#define MATRIX_ROWS 4
+#define MATRIX_COLS 12
+
+/*
+ * Keyboard Matrix Assignments
+ *
+ * Change this to how you wired your keyboard
+ * COLS: AVR pins used for columns, left to right
+ * ROWS: AVR pins used for rows, top to bottom
+ * DIODE_DIRECTION: COL2ROW = COL = Anode (+), ROW = Cathode (-, marked on diode)
+ *                  ROW2COL = ROW = Anode (+), COL = Cathode (-, marked on diode)
+ *
+*/
+#define MATRIX_COL_PINS { F5, F6, F7, F0, F1, F4, B6, B5, D7, C7, D6, B7 }
+#define MATRIX_ROW_PINS { D2, D3, D0, D1 }
+#define UNUSED_PINS
+
+/* COL2ROW, ROW2COL, or CUSTOM_MATRIX */
+#define DIODE_DIRECTION COL2ROW
+
+/* Debounce reduces chatter (unintended double-presses) - set 0 if debouncing is not needed */
+#define DEBOUNCE 5
+
+/* Mechanical locking support. Use KC_LCAP, KC_LNUM or KC_LSCR instead in keymap */
+#define LOCKING_SUPPORT_ENABLE
+/* Locking resynchronize hack */
+#define LOCKING_RESYNC_ENABLE
+
+#define TAPPING_TERM 100

keyboards/handwired/42/keymaps/default/keymap.c

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+#include QMK_KEYBOARD_H
+
+// MOD_KC
+#define CTL_ESC MT(MOD_LCTL, KC_ESCAPE)
+#define CTL_ENT MT(MOD_LCTL, KC_ENTER)
+#define ALT_Z   MT(MOD_LALT, KC_Z)
+#define ALT_SLS MT(MOD_LALT, KC_SLASH)
+#define SU_QUOT MT(MOD_LGUI, KC_QUOTE)
+#define SU_BSLS MT(MOD_LGUI, KC_BSLS)
+#define SFT_DEL MT(MOD_LSFT, KC_DELETE)
+
+// LAYER_KC
+#define L3_SPC  LT(3, KC_SPC)
+#define L2_SPC  LT(2, KC_SPC)
+#define L1_LBRC LT(1, KC_LBRC)
+#define L1_RBRC LT(1, KC_RBRC)
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+  // Default Layer
+  LAYOUT(
+    KC_TAB , KC_Q   , KC_W   , KC_E   , KC_R   , KC_T   ,       KC_Y   , KC_U   , KC_I   , KC_O   , KC_P   , KC_BSPC,
+    CTL_ESC, KC_A   , KC_S   , KC_D   , KC_F   , KC_G   ,       KC_H   , KC_J   , KC_K   , KC_L   , KC_SCLN, CTL_ENT,
+    KC_LSFT, ALT_Z  , KC_X   , KC_C   , KC_V   , KC_B   ,       KC_N   , KC_M   , KC_COMM, KC_DOT , ALT_SLS, SFT_DEL,
+                               L1_LBRC, L3_SPC , SU_QUOT,       SU_BSLS, L2_SPC , L1_RBRC
+  ),
+  // Symbols Layer
+  LAYOUT(
+    KC_GRV , KC_1   , KC_2   , KC_3   , KC_4   , KC_5   ,       KC_6   , KC_7   , KC_8   , KC_9   , KC_0   , KC_EQL ,
+    KC_INS , S(KC_1), S(KC_2), S(KC_3), S(KC_4), S(KC_5),       S(KC_6), S(KC_7), S(KC_8), S(KC_9), S(KC_0), KC_MINS,
+    KC_F1  , KC_F2  , KC_F3  , KC_F4  , KC_F5  , KC_F6  ,       KC_F7  , KC_F8  , KC_F9  , KC_F10 , KC_F11 , KC_F12 ,
+                               KC_CAPS, OUT_USB, OUT_BT ,       _______, _______, _______
+  ),
+  // Navigation Layer
+  LAYOUT(
+    _______, _______, _______, KC_PGUP, _______, _______,       KC_BRIU, _______, KC_UP  , _______, _______, _______,
+    _______, _______, KC_HOME, KC_PGDN, KC_END , _______,       _______, KC_LEFT, KC_DOWN, KC_RGHT, _______, _______,
+    _______, _______, _______, _______, _______, _______,       KC_BRID, KC_VOLD, KC_MUTE, KC_VOLU, _______, _______,
+                               _______, _______, _______,       _______, _______, _______
+  ),
+  // Mouse Layer
+  LAYOUT(
+    _______, _______, KC_WREF, KC_WH_U, KC_WSCH, _______,       _______, KC_BTN1, KC_MS_U, KC_BTN2, _______, _______,
+    _______, _______, KC_WH_L, KC_WH_D, KC_WH_R, _______,       _______, KC_MS_L, KC_MS_D, KC_MS_R, _______, _______,
+    _______, _______, KC_MPRV, KC_MPLY, KC_MNXT, _______,       _______, _______, _______, _______, _______, _______,
+                               _______, _______, _______,       _______, _______, _______
+  )
+};

keyboards/handwired/42/rules.mk

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+# MCU name
+MCU = atmega32u4
+
+# Processor frequency.
+F_CPU = 8000000
+
+# Bootloader selection
+#   Teensy       halfkay
+#   Pro Micro    caterina
+#   Atmel DFU    atmel-dfu
+#   LUFA DFU     lufa-dfu
+#   QMK DFU      qmk-dfu
+#   ATmega32A    bootloadHID
+#   ATmega328p   USBasp
+BOOTLOADER = caterina
+
+# Build Options
+#   change yes to no to disable
+#
+BOOTMAGIC_ENABLE = no       # Virtual DIP switch configuration
+MOUSEKEY_ENABLE = yes       # Mouse keys
+EXTRAKEY_ENABLE = yes       # Audio control and System control
+CONSOLE_ENABLE = no         # Console for debug
+COMMAND_ENABLE = no         # Commands for debug and configuration
+# Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
+SLEEP_LED_ENABLE = no       # Breathing sleep LED during USB suspend
+# if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+NKRO_ENABLE = yes           # USB Nkey Rollover
+BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality
+RGBLIGHT_ENABLE = no        # Enable keyboard RGB underglow
+MIDI_ENABLE = no            # MIDI support
+AUDIO_ENABLE = no           # Audio output on port C6
+FAUXCLICKY_ENABLE = no      # Use buzzer to emulate clicky switches
+HD44780_ENABLE = no         # Enable support for HD44780 based LCDs
+
+UNICODE_ENABLE = no         # Unicode
+UNICODEMAP_ENABLE = no      # ^^
+UCIS_ENABLE = no            # ^^
+BLUETOOTH = AdafruitBLE