[Keyboard] add MelGeek MJ61 (#10341)

* [Keyboard] Support MJ61 which is a 60% ANSI STD Hotswap RGB keyboard

* Update keyboards/melgeek/mj61/mj61.c

* Update keyboards/melgeek/mj61/mj61.c

* [Keyboard] MJ61 Add license header for files and the link for readme

* Update keyboards/melgeek/mj61/readme.md

* Update keyboards/melgeek/mj61/rev1/config.h

* Update keyboards/melgeek/mj61/rev1/rules.mk

* Update keyboards/melgeek/mj61/mj61.c

* Update keyboards/melgeek/mj61/mj61.c

2 files changed, 90 insertions, 0 deletions

diff --git a/keyboards/melgeek/mj61/rev1/config.h b/keyboards/melgeek/mj61/rev1/config.h
new file mode 100644
index 0000000000..a0ba953b0e
--- /dev/null
+++ b/keyboards/melgeek/mj61/rev1/config.h
@@ -0,0 +1,70 @@
+/* Copyright 2020 MelGeek <melgeek001365@gmail.com>
+ *
+ * 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
+
+/* USB Device descriptor parameter */
+#define VENDOR_ID       0xFEED
+#define PRODUCT_ID      0xED61
+#define DEVICE_VER      0x0001
+#define MANUFACTURER    MelGeek
+#define PRODUCT         MJ61
+
+/* key matrix size */
+#define MATRIX_ROWS 5
+#define MATRIX_COLS 14
+
+/*
+ * 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 { B12, B11, B10, B1, A3 }
+#define MATRIX_COL_PINS { B15, A8, A10, A15, B3, B4, B5, B8, B9, C13, C14, C15, A0, A1 }
+#define UNUSED_PINS
+
+/* COL2ROW, ROW2COL*/
+#define DIODE_DIRECTION COL2ROW
+
+/* Debounce reduces chatter (unintended double-presses) - set 0 if debouncing is not needed */
+#define DEBOUNCE 3
+
+/* disable these deprecated features by default */
+#define NO_ACTION_MACRO
+#define NO_ACTION_FUNCTION
+
+#define RGB_DISABLE_AFTER_TIMEOUT 0 // number of ticks to wait until disabling effects
+#define RGB_DISABLE_WHEN_USB_SUSPENDED true // turn off effects when suspended
+#define RGB_MATRIX_KEYPRESSES
+#define RGB_MATRIX_LED_PROCESS_LIMIT 4
+#define RGB_MATRIX_LED_FLUSH_LIMIT 26
+#define DISABLE_RGB_MATRIX_SPLASH
+#define DISABLE_RGB_MATRIX_MULTISPLASH
+#define DISABLE_RGB_MATRIX_SOLID_MULTISPLASH
+//#define RGB_MATRIX_STARTUP_MODE RGB_MATRIX_SOLID_COLOR
+#define RGB_MATRIX_STARTUP_MODE RGB_MATRIX_CYCLE_ALL
+#define DRIVER_ADDR_1 0b0110000
+#define DRIVER_ADDR_2 0b0110000 // this is here for compliancy reasons.
+#define DRIVER_COUNT 1
+#define DRIVER_1_LED_TOTAL 63
+#define DRIVER_LED_TOTAL DRIVER_1_LED_TOTAL
+#define DRIVER_INDICATOR_LED_TOTAL 0
diff --git a/keyboards/melgeek/mj61/rev1/rules.mk b/keyboards/melgeek/mj61/rev1/rules.mk
new file mode 100644
index 0000000000..ba7f9eac25
--- /dev/null
+++ b/keyboards/melgeek/mj61/rev1/rules.mk
@@ -0,0 +1,20 @@
+# MCU name
+MCU = STM32F303
+
+# Build Options
+#   change yes to no to disable
+#
+BOOTMAGIC_ENABLE = lite        # 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
+BLUETOOTH_ENABLE = no          # Enable Bluetooth
+RGB_MATRIX_ENABLE = IS31FL3741 # Use RGB matrix
+NO_USB_STARTUP_CHECK = no      # Disable initialization only when usb is plugged in