[Keyboard] Add Hex4B rev.2 PCB (#15811)

Co-authored-by: Drashna Jaelre <drashna@live.com>
Co-authored-by: Ryan <fauxpark@gmail.com>

keyboards/mechlovin/hex4b/rev1/config.h

@@ -0,0 +1,53 @@
+/*
+Copyright 2020 Team Mechlovin
+
+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 "config_common.h"
+
+/* USB Device descriptor parameter */
+#define DEVICE_VER   0x0001
+#define PRODUCT      Hex-4B Rev.1
+
+/*
+ * 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_ROW_PINS { B7, A2, A1, A3, A4, A5 }
+#define MATRIX_COL_PINS { B6, B5, B3, B2, B1, B0, A0, A6, A7, C7, C6, C5, C4, D1, D0 }
+#define UNUSED_PINS
+
+#define LED_NUM_LOCK_PIN D6
+#define LED_CAPS_LOCK_PIN D7
+#define LED_SCROLL_LOCK_PIN D5
+//#define LED_COMPOSE_PIN B3
+//#define LED_KANA_PIN B4
+
+#define BACKLIGHT_PIN D4
+#define BACKLIGHT_LEVELS 5
+#define BACKLIGHT_BREATHING
+
+/* Bootmagic Lite key configuration, Backspace */
+#define BOOTMAGIC_LITE_ROW 1
+#define BOOTMAGIC_LITE_COLUMN 14

keyboards/mechlovin/hex4b/rev1/readme.md

@@ -0,0 +1,21 @@
+# hex4b
+
+![hex4b](https://i.imgur.com/lArfGgHh.jpeg)
+
+A PCB for HEX.4B 75% keyboard.
+
+* Keyboard Maintainer: [Mechlovin' Studio](https://github.com/mechlovin)
+* Hardware Supported: Hex.4B PCB, Atmega32A 
+* Hardware Availability: [Hex Keyboard](https://hexkeyboards.com/)
+
+Make example for this keyboard (after setting up your build environment):
+
+    make mechlovin/hex4b/rev1:default
+
+Flashing example for this keyboard:
+
+    make mechlovin/hex4b/rev1:default:flash
+
+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).
+
+Reset Key: To put the Hex4B into bootloader, hold esc key while plugging in (bootloader), hold backspace while plugging in (bootmagic) and plug cable.

keyboards/mechlovin/hex4b/rev1/rules.mk

@@ -0,0 +1,21 @@
+# MCU name
+MCU = atmega32a
+
+# Bootloader selection
+BOOTLOADER = usbasploader
+
+# Processor frequency
+F_CPU = 16000000
+
+# Build Options
+#   change yes to no to disable
+#
+BOOTMAGIC_ENABLE = yes      # Enable Bootmagic Lite
+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
+NKRO_ENABLE = no            # Enable N-Key Rollover
+BACKLIGHT_ENABLE = yes      # Enable keyboard backlight functionality
+RGBLIGHT_ENABLE = no        # Enable keyboard RGB underglow
+AUDIO_ENABLE = no           # Audio output