Added basic support for JJ50 (preonic-like based on atmega32A) (#2546)

* Added support for JJ50 from KPRepublic, no rgb or backlight control yet. Added as a layout of ymd96 at the moment (same microprocessor). Basic keymap with three layers to get started.

* Added support for JJ50

13 files changed, 1189 insertions, 0 deletions

diff --git a/keyboards/jj50/README.md b/keyboards/jj50/README.md
new file mode 100644
index 0000000000..39cfc69ca0
--- /dev/null
+++ b/keyboards/jj50/README.md
@@ -0,0 +1,79 @@
+JJ50
+==========================
+
+This is a port of the QMK firmware for boards that are based on the
+ps2avrGB firmware, like the [ps2avrGB keyboard] (https://www.keyclack.com/product/gb-ps2avrgb/), for use on the JJ50, a preonic-like board.
+
+Most of the code was taken and amended from YMD96, which in itself was taken from ps2avrGB and amended by Andrew Novak.
+
+Note that this is a complete replacement for the firmware, so you won't be
+using Bootmapper Client to change any keyboard settings, since not all the
+USB report options are supported.  
+
+Hardware Supported: JJ50 with the ATmega32a chip.
+Hardware Availability: The JJ50 PCB is available from kprepublic on AliExpress and suchlike.
+
+
+## Installing and Building
+
+Make example for this keyboard (after setting up your build environment):
+
+```
+$ make jj50:default:program
+```
+It should detect the keyboard and set it to bootloader mode automatically, prior to flashing firmware.
+
+See [build environment setup](https://docs.qmk.fm/build_environment_setup.html) then the [make instructions](https://docs.qmk.fm/make_instructions.html) for more information.
+
+Note that this is a complete replacement for the firmware, so you won't be
+using Bootmapper Client to change any keyboard settings, since not all the
+USB report options are supported.
+In addition you may need the AVR toolchain and `bootloadHID` for flashing:
+
+```
+$ brew cask install crosspack-avr
+$ brew install --HEAD https://raw.githubusercontent.com/robertgzr/homebrew-tap/master/bootloadhid.rb
+```
+
+In order to use the `./program` script, which can reboot the board into
+the bootloader, you'll need Python 2 with PyUSB installed:
+
+```
+$ pip install pyusb
+```
+
+If you prefer, you can just build it and flash the firmware directly with
+`bootloadHID` if you boot the board while holding down `Backspace` (`key below top right key`) to keep it
+in the bootloader:
+
+```
+$ make jj50
+$ bootloadHID -r jj50_default.hex
+```
+I dont use windows personally, but the following is from ymd96 regarding flashing the atmega32a:
+
+Since the JJ50 uses an ATmega32a chip instead of the 32u4, you need to download [HIDBootFlash v.1.0](http://vusb.wikidot.com/project:hidbootflash) for Windows. If anyone knows of a Linux/Mac bootflasher that works, edit this readme!
+On Windows, I use [MINGw](http://www.mingw.org/) to compile the keymaps. On Linux or OSX you can simply use the terminal.
+
+Once you have those two pieces of software:
+Build the keyboard with  
+```
+$ make jj50:default
+```  
+If you make your own layout, change the `default` word to whatever your layout is.  
+
+And flash the compiled hex file with `HIDBootFlash`. Simply put the board in flashing mode by plugging it in while holding the key below the top right key, and click `find device`. Then you can specify the .hex file and flash it to the device.
+
+
+## Troubleshooting
+
+1. Try plugging the board in while pressing `Backspace` (`Key below the top right key`). This will force it to boot only the bootloader without loading the firmware. Once this is done, just reflash the board with the original firmware.
+2. Sometimes USB hubs can act weird, so try connecting the board directly to your computer or plugging/unplugging the USB hub.
+3. If you get an error such as "Resource Unavailable" when attemting to flash on Linux, you may want to compile and run `tools/usb_detach.c`. See `tools/README.md` for more info.
+4. I was occasionally finding that I wasn't flashing changes that I was making to my keymap. If that happens, simply force rebuild by making with:
+```
+$ make -B jj50:default:program
+```
+
+
+
diff --git a/keyboards/jj50/config.h b/keyboards/jj50/config.h
new file mode 100644
index 0000000000..240732594d
--- /dev/null
+++ b/keyboards/jj50/config.h
@@ -0,0 +1,54 @@
+/*
+Base Copyright 2017 Luiz Ribeiro <luizribeiro@gmail.com>
+Modified 2017 Andrew Novak <ndrw.nvk@gmail.com>
+Modified 2018 Wayne Jones (WarmCatUK) <waynekjones@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/>.
+*/
+
+#ifndef CONFIG_H
+#define CONFIG_H
+
+#include "config_common.h"
+
+#define VENDOR_ID       0x20A0
+#define PRODUCT_ID      0x422D
+// TODO: share these strings with usbconfig.h
+// Edit usbconfig.h to change these.
+#define MANUFACTURER    kprepublic
+#define PRODUCT         jj50
+#define DESCRIPTION     Preonic-like clone
+
+/* matrix size */
+#define MATRIX_ROWS 8
+#define MATRIX_COLS 15
+#define DIODE_DIRECTION ROW2COL
+
+#define BACKLIGHT_PIN D4
+#define BACKLIGHT_LEVELS 3
+
+//#define RGB_DI_PIN C0
+#define RGBLED_NUM 5
+#define RGBLIGHT_ANIMATIONS
+#define RGBLIGHT_HUE_STEP 12
+#define RGBLIGHT_SAT_STEP 15
+#define RGBLIGHT_VAL_STEP 18
+
+#define NO_UART 1
+#define BOOTLOADHID_BOOTLOADER 1
+
+/* key combination for command */
+#define IS_COMMAND() (keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)))
+
+#endif
diff --git a/keyboards/jj50/i2c.c b/keyboards/jj50/i2c.c
new file mode 100644
index 0000000000..c27f3e3d17
--- /dev/null
+++ b/keyboards/jj50/i2c.c
@@ -0,0 +1,104 @@
+/*
+Copyright 2016 Luiz Ribeiro <luizribeiro@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/>.
+*/
+
+#include <avr/io.h>
+#include <util/twi.h>
+
+#include "i2c.h"
+
+void i2c_set_bitrate(uint16_t bitrate_khz) {
+    uint8_t bitrate_div = ((F_CPU / 1000l) / bitrate_khz);
+    if (bitrate_div >= 16) {
+        bitrate_div = (bitrate_div - 16) / 2;
+    }
+    TWBR = bitrate_div;
+}
+
+void i2c_init(void) {
+    // set pull-up resistors on I2C bus pins
+    PORTC |= 0b11;
+
+    i2c_set_bitrate(400);
+
+    // enable TWI (two-wire interface)
+    TWCR |= (1 << TWEN);
+
+    // enable TWI interrupt and slave address ACK
+    TWCR |= (1 << TWIE);
+    TWCR |= (1 << TWEA);
+}
+
+uint8_t i2c_start(uint8_t address) {
+    // reset TWI control register
+    TWCR = 0;
+
+    // begin transmission and wait for it to end
+    TWCR = (1<<TWINT) | (1<<TWSTA) | (1<<TWEN);
+    while (!(TWCR & (1<<TWINT)));
+
+    // check if the start condition was successfully transmitted
+    if ((TWSR & 0xF8) != TW_START) {
+        return 1;
+    }
+
+    // transmit address and wait
+    TWDR = address;
+    TWCR = (1<<TWINT) | (1<<TWEN);
+    while (!(TWCR & (1<<TWINT)));
+
+    // check if the device has acknowledged the READ / WRITE mode
+    uint8_t twst = TW_STATUS & 0xF8;
+    if ((twst != TW_MT_SLA_ACK) && (twst != TW_MR_SLA_ACK)) {
+        return 1;
+    }
+
+    return 0;
+}
+
+void i2c_stop(void) {
+    TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTO);
+}
+
+uint8_t i2c_write(uint8_t data) {
+    TWDR = data;
+
+    // transmit data and wait
+    TWCR = (1<<TWINT) | (1<<TWEN);
+    while (!(TWCR & (1<<TWINT)));
+
+    if ((TWSR & 0xF8) != TW_MT_DATA_ACK) {
+        return 1;
+    }
+
+    return 0;
+}
+
+uint8_t i2c_send(uint8_t address, uint8_t *data, uint16_t length) {
+    if (i2c_start(address)) {
+        return 1;
+    }
+
+    for (uint16_t i = 0; i < length; i++) {
+        if (i2c_write(data[i])) {
+            return 1;
+        }
+    }
+
+    i2c_stop();
+
+    return 0;
+}
diff --git a/keyboards/jj50/i2c.h b/keyboards/jj50/i2c.h
new file mode 100644
index 0000000000..27c9d3d050
--- /dev/null
+++ b/keyboards/jj50/i2c.h
@@ -0,0 +1,25 @@
+/*
+Copyright 2016 Luiz Ribeiro <luizribeiro@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/>.
+*/
+
+#ifndef __I2C_H__
+#define __I2C_H__
+
+void i2c_init(void);
+void i2c_set_bitrate(uint16_t bitrate_khz);
+uint8_t i2c_send(uint8_t address, uint8_t *data, uint16_t length);
+
+#endif
diff --git a/keyboards/jj50/jj50.c b/keyboards/jj50/jj50.c
new file mode 100644
index 0000000000..a75b12c4ea
--- /dev/null
+++ b/keyboards/jj50/jj50.c
@@ -0,0 +1,45 @@
+/*
+Copyright 2017 Luiz Ribeiro <luizribeiro@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/>.
+*/
+
+#include "jj50.h"
+#include "rgblight.h"
+
+#include <avr/pgmspace.h>
+
+#include "action_layer.h"
+#include "i2c.h"
+#include "quantum.h"
+
+extern rgblight_config_t rgblight_config;
+
+void rgblight_set(void) {
+    if (!rgblight_config.enable) {
+        for (uint8_t i = 0; i < RGBLED_NUM; i++) {
+            led[i].r = 0;
+            led[i].g = 0;
+            led[i].b = 0;
+        }
+    }
+
+    i2c_init();
+    i2c_send(0xb0, (uint8_t*)led, 3 * RGBLED_NUM);
+}
+
+__attribute__ ((weak))
+void matrix_scan_user(void) {
+    rgblight_task();
+}
diff --git a/keyboards/jj50/jj50.h b/keyboards/jj50/jj50.h
new file mode 100644
index 0000000000..09664f77f6
--- /dev/null
+++ b/keyboards/jj50/jj50.h
@@ -0,0 +1,50 @@
+/*
+Base Copyright 2017 Luiz Ribeiro <luizribeiro@gmail.com>
+Modified 2017 Andrew Novak <ndrw.nvk@gmail.com>
+Modified 2018 Wayne Jones (WarmCatUK) <waynekjones@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/>.
+*/
+
+#ifndef KEYMAP_COMMON_H
+#define KEYMAP_COMMON_H
+
+#include "quantum_keycodes.h"
+#include "keycode.h"
+#include "action.h"
+
+#define KEYMAP( \
+K011, K010, K009, K008, K004, K005, K006, K007, K003, K002, K201, K000, \
+K111, K110, K109, K108, K104, K105, K106, K107, K103, K102, K001, K100, \
+K211, K210, K209, K208, K204, K205, K206, K207, K203, K202, K101, K200, \
+K311, K310, K309, K308, K304, K305, K306, K307, K303, K302, K301, K300, \
+K411, K410, K409, K408, K404, K405, K406, K407, K403, K402, K401, K400  \
+) { \
+{ K100, K001, K102, K103, K104, K105, K106, K107, K108, K109, K110, K111, }, \
+{ K200, K101, K202, K203, K204, K205, K206, K207, K208, K209, K210, K211, }, \
+{ K000, K201, K002, K003, K004, K005, K006, K007, K008, K009, K010, K011, }, \
+{ K300, K301, K302, K303, K304, K305, K306, K307, K308, K309, K310, K311, }, \
+{ K400, K401, K402, K403, K404, K405, K406, K407, K408, K409, K410, K411 },  \
+}
+
+#endif
+
+
+
+
+
+
+
+
+
diff --git a/keyboards/jj50/keymaps/default/keymap.c b/keyboards/jj50/keymaps/default/keymap.c
new file mode 100644
index 0000000000..8a32efd0c0
--- /dev/null
+++ b/keyboards/jj50/keymaps/default/keymap.c
@@ -0,0 +1,96 @@
+/*
+Base Copyright 2017 Luiz Ribeiro <luizribeiro@gmail.com>
+Modified 2017 Andrew Novak <ndrw.nvk@gmail.com>
+Modified 2018 Wayne Jones (WarmCatUK) <waynekjones@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 LicensezZZ
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "jj50.h"
+#include "action_layer.h"
+#include "rgblight.h"
+
+#define ______ KC_TRNS
+#define _DEFLT 0
+#define _RAISE 1
+#define _LOWER 2
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+	
+    /* Qwerty
+     * ,-----------------------------------------------------------------------------------.
+     * |   1  |   2  |   3  |   4  |   5  |   6  |   7  |   8  |   9  |   0  |   -  |  =   |
+     * |------+------+------+------+------+------+------+------+------+------+------+------|
+     * | Tab  |   Q  |   W  |   E  |   R  |   T  |   Y  |   U  |   I  |   O  |   P  | Bksp |
+     * |------+------+------+------+------+------+------+------+------+------+------+------|
+     * | Esc  |   A  |   S  |   D  |   F  |   G  |   H  |   J  |   K  |   L  |   ;  |  "   |
+     * |------+------+------+------+------+------+------+------+------+------+------+------|
+     * | Shift|   Z  |   X  |   C  |   V  |   B  |   N  |   M  |   ,  |   .  |   /  |Enter |
+     * |------+------+------+------+------+------+------+------+------+------+------+------|
+     * |      | Ctrl | Alt  | GUI  |Lower |    Space    |Raise | Left | Down |  Up  |Right |
+     * `-----------------------------------------------------------------------------------'
+     */
+    [_DEFLT] = KEYMAP( \
+        KC_1,    KC_2,    KC_3,    KC_4,    KC_5,    KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    KC_MINS, KC_EQL,       \
+        KC_TAB,  KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,    KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,    KC_BSPC,      \
+        KC_ESC,  KC_A,    KC_S,    KC_D,    KC_F,    KC_G,    KC_H,    KC_J,    KC_K,    KC_L,    KC_SCLN, KC_QUOT,      \
+        KC_LSFT, KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH, SFT_T(KC_ENT),\
+        BL_TOGG, KC_LCTL, KC_LALT, KC_LGUI, MO(_LOWER), KC_SPC,KC_SPC, MO(_RAISE),KC_LEFT, KC_DOWN, KC_UP,   KC_RGHT     \
+    ),
+    
+    
+    /* Raise
+     * ,-----------------------------------------------------------------------------------.
+     * |  F1  |  F2  |  F3  |  F4  |  F5  |  F6  |  F7  |  F8  |  F9  |  F10 |  F11 |  F12 |
+     * |------+------+------+------+------+------+------+------+------+------+------+------|
+     * |   `  |   1  |   2  |   3  |   4  |   5  |   6  |   7  |   8  |   9  |   0  | Del  |
+     * |------+------+------+------+------+------+------+------+------+------+------+------|
+     * |      |      |      |      |      |      |      |      |      |   [  |   ]  |  \   |
+     * |------+------+------+------+------+------+------+------+------+------+------+------|
+     * |      |      |      |      |      |      |      |ISO # |ISO / |  PUP |  PDN |      |
+     * |------+------+------+------+------+------+------+------+------+------+------+------|
+     * |      |      |      |      |      |             |      | Next | Vol- | Vol+ | Play |
+     * `-----------------------------------------------------------------------------------'
+     */
+    [_RAISE] = KEYMAP( \
+       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_GRV,  KC_1,    KC_2,    KC_3,    KC_4,    KC_5,    KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    KC_DEL,  \
+       RESET,   BL_INC, RGB_SAI, _______, _______, _______, _______, _______, _______, KC_LBRC, KC_RBRC, KC_BSLS, \
+       _______, BL_DEC, _______, _______, _______, _______, _______, KC_NUHS, KC_NUBS, KC_PGUP, KC_PGDN, _______, \
+       RGB_TOG, _______, _______, _______, _______, _______, _______, _______, KC_MNXT, KC_VOLD, KC_VOLU, KC_MPLY  \
+    ),
+    
+    
+    /* Lower
+     * ,-----------------------------------------------------------------------------------.
+     * |  F1  |  F2  |  F3  |  F4  |  F5  |  F6  |  F7  |  F8  |  F9  |  F10 |  F11 |  F12 |
+     * |------+------+------+------+------+------+------+------+------+------+------+------|
+     * |   ~  |   !  |   @  |   #  |   $  |   %  |   ^  |   &  |   *  |   (  |   )  | Del  |
+     * |------+------+------+------+------+------+------+------+------+------+------+------|
+     * |      |      |      |      |      |      |      |      |      |   {  |   }  |  |   |
+     * |------+------+------+------+------+------+------+------+------+------+------+------|
+     * |      |      |      |      |      |      |      |ISO ~ |ISO | |  HOM |  END |      |
+     * |------+------+------+------+------+------+------+------+------+------+------+------|
+     * |      |      |      |      |      |             |      | Next | Vol- | Vol+ | Play |
+     * `-----------------------------------------------------------------------------------'
+     */
+    [_LOWER] = KEYMAP( \
+        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_TILD, KC_EXLM, KC_AT,   KC_HASH, KC_DLR,  KC_PERC, KC_CIRC, KC_AMPR, KC_ASTR, KC_LPRN, KC_RPRN, KC_DEL,    \
+        RESET, _______, _______, _______, _______, _______, _______, _______, _______, KC_LCBR, KC_RCBR, KC_PIPE,   \
+        _______, _______, _______, _______, _______, _______, _______,S(KC_NUHS),S(KC_NUBS),KC_HOME, KC_END, _______, \
+        _______, _______, _______, _______, _______, _______, _______, _______, KC_MNXT, KC_VOLD, KC_VOLU, KC_MPLY    \
+    )
+    
+};
diff --git a/keyboards/jj50/matrix.c b/keyboards/jj50/matrix.c
new file mode 100644
index 0000000000..8f9c67fe47
--- /dev/null
+++ b/keyboards/jj50/matrix.c
@@ -0,0 +1,106 @@
+/*
+Copyright 2017 Luiz Ribeiro <luizribeiro@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/>.
+*/
+
+#include <avr/io.h>
+#include <util/delay.h>
+
+#include "matrix.h"
+
+#ifndef DEBOUNCE
+#   define DEBOUNCE	5
+#endif
+
+static uint8_t debouncing = DEBOUNCE;
+
+static matrix_row_t matrix[MATRIX_ROWS];
+static matrix_row_t matrix_debouncing[MATRIX_ROWS];
+
+void matrix_init(void) {
+    // all outputs for rows high
+    DDRB = 0xFF;
+    PORTB = 0xFF;
+    // all inputs for columns
+    DDRA = 0x00;
+    DDRC &= ~(0x111111<<2);
+    DDRD &= ~(1<<PIND7);
+    // all columns are pulled-up
+    PORTA = 0xFF;
+    PORTC |= (0b111111<<2);
+    //PORTD |= (1<<PIND7);
+
+    // initialize matrix state: all keys off
+    for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
+        matrix[row] = 0x00;
+        matrix_debouncing[row] = 0x00;
+    }
+}
+
+void matrix_set_row_status(uint8_t row) {
+    DDRB = (1 << row);
+    PORTB = ~(1 << row);
+}
+
+uint8_t bit_reverse(uint8_t x) {
+    x = ((x >> 1) & 0x55) | ((x << 1) & 0xaa);
+    x = ((x >> 2) & 0x33) | ((x << 2) & 0xcc);
+    x = ((x >> 4) & 0x0f) | ((x << 4) & 0xf0);
+    return x;
+}
+
+uint8_t matrix_scan(void) {
+    for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
+        matrix_set_row_status(row);
+        _delay_us(5);
+
+        matrix_row_t cols = (
+            // cols 0..7, PORTA 0 -> 7
+            (~PINA) & 0xFF
+        ) | (
+            // cols 8..13, PORTC 7 -> 0
+            bit_reverse((~PINC) & 0xFF) << 8
+        ) | (
+            // col 14, PORTD 7
+            ((~PIND) & (1 << PIND7)) << 7
+        );
+
+        if (matrix_debouncing[row] != cols) {
+            matrix_debouncing[row] = cols;
+            debouncing = DEBOUNCE;
+        }
+    }
+
+    if (debouncing) {
+        if (--debouncing) {
+            _delay_ms(1);
+        } else {
+            for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
+                matrix[i] = matrix_debouncing[i];
+            }
+        }
+    }
+
+    matrix_scan_user();
+
+    return 1;
+}
+
+inline matrix_row_t matrix_get_row(uint8_t row) {
+    return matrix[row];
+}
+
+void matrix_print(void) {
+}
diff --git a/keyboards/jj50/program b/keyboards/jj50/program
new file mode 100644
index 0000000000..a88d9cd9b0
--- /dev/null
+++ b/keyboards/jj50/program
@@ -0,0 +1,74 @@
+#!/usr/bin/env python
+# Copyright 2017 Luiz Ribeiro <luizribeiro@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/>.
+
+from __future__ import print_function
+
+import os
+import sys
+import time
+import usb
+
+if len(sys.argv) < 2:
+    print('Usage: %s <firmware.hex>' % sys.argv[0])
+    sys.exit(1)
+
+print('Searching for ps2avrGB... ', end='')
+
+dev = usb.core.find(idVendor=0x20A0, idProduct=0x422D)
+if dev is None:
+    raise ValueError('Device not found')
+
+print('Found', end='\n\n')
+
+print('Device Information:')
+print('  idVendor: %d (0x%04x)' % (dev.idVendor, dev.idVendor))
+print('  idProduct: %d (0x%04x)' % (dev.idProduct, dev.idProduct))
+print('Manufacturer: %s' % (dev.iManufacturer))
+print('Serial: %s' % (dev.iSerialNumber))
+print('Product: %s' % (dev.iProduct), end='\n\n')
+
+print('Transferring control to bootloader... ', end='')
+
+dev.set_configuration()
+
+request_type = usb.util.build_request_type(
+        usb.util.CTRL_OUT,
+        usb.util.CTRL_TYPE_CLASS,
+        usb.util.CTRL_RECIPIENT_DEVICE)
+
+USBRQ_HID_SET_REPORT = 0x09
+HID_REPORT_OPTION = 0x0301
+
+
+try:
+    dev.ctrl_transfer(
+            request_type,
+            USBRQ_HID_SET_REPORT,
+            HID_REPORT_OPTION,
+            0,
+            [0, 0, 0xFF] + [0] * 5
+            )
+except usb.core.USBError:
+    # for some reason I keep getting USBError, but it works!
+    pass
+
+# wait a bit until bootloader starts up
+time.sleep(2)
+
+print('OK')
+print('Programming...')
+if os.system('bootloadHID -r "%s"' % sys.argv[1]) == 0:
+    print('\nDone!')
diff --git a/keyboards/jj50/rules.mk b/keyboards/jj50/rules.mk
new file mode 100644
index 0000000000..1b7826e505
--- /dev/null
+++ b/keyboards/jj50/rules.mk
@@ -0,0 +1,51 @@
+# Copyright 2017 Luiz Ribeiro <luizribeiro@gmail.com>
+# Modified 2018 Wayne Jones (WarmCatUK) <waynekjones@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/>.
+
+# MCU name
+MCU = atmega32a
+PROTOCOL = VUSB
+
+# unsupported features for now
+NO_UART = yes
+NO_SUSPEND_POWER_DOWN = yes
+
+# processor frequency
+F_CPU = 12000000
+
+# Bootloader
+#     This definition is optional, and if your keyboard supports multiple bootloaders of
+#     different sizes, comment this out, and the correct address will be loaded 
+#     automatically (+60). See bootloader.mk for all options.
+BOOTLOADER = bootloadHID
+
+# build options
+BOOTMAGIC_ENABLE = yes
+MOUSEKEY_ENABLE = no
+EXTRAKEY_ENABLE = yes
+CONSOLE_ENABLE = no
+COMMAND_ENABLE = no
+BACKLIGHT_ENABLE = yes
+RGBLIGHT_ENABLE = yes
+RGBLIGHT_CUSTOM_DRIVER = yes
+
+OPT_DEFS = -DDEBUG_LEVEL=0
+
+# custom matrix setup
+CUSTOM_MATRIX = yes
+SRC = matrix.c i2c.c
+
+# programming options
+PROGRAM_CMD = ./keyboards/ps2avrGB/program $(TARGET).hex
diff --git a/keyboards/jj50/usbconfig.h b/keyboards/jj50/usbconfig.h
new file mode 100644
index 0000000000..d2d848fcdc
--- /dev/null
+++ b/keyboards/jj50/usbconfig.h
@@ -0,0 +1,396 @@
+/* Name: usbconfig.h
+ * Project: V-USB, virtual USB port for Atmel's(r) AVR(r) microcontrollers
+ * Author: Christian Starkjohann
+ * Creation Date: 2005-04-01
+ * Tabsize: 4
+ * Copyright: (c) 2005 by OBJECTIVE DEVELOPMENT Software GmbH
+ * License: GNU GPL v2 (see License.txt), GNU GPL v3 or proprietary (CommercialLicense.txt)
+ * This Revision: $Id: usbconfig-prototype.h 785 2010-05-30 17:57:07Z cs $
+ */
+
+#ifndef __usbconfig_h_included__
+#define __usbconfig_h_included__
+
+#include "config.h"
+
+/*
+General Description:
+This file is an example configuration (with inline documentation) for the USB
+driver. It configures V-USB for USB D+ connected to Port D bit 2 (which is
+also hardware interrupt 0 on many devices) and USB D- to Port D bit 4. You may
+wire the lines to any other port, as long as D+ is also wired to INT0 (or any
+other hardware interrupt, as long as it is the highest level interrupt, see
+section at the end of this file).
+*/
+
+/* ---------------------------- Hardware Config ---------------------------- */
+
+#define USB_CFG_IOPORTNAME      D
+/* This is the port where the USB bus is connected. When you configure it to
+ * "B", the registers PORTB, PINB and DDRB will be used.
+ */
+#define USB_CFG_DMINUS_BIT      3
+/* This is the bit number in USB_CFG_IOPORT where the USB D- line is connected.
+ * This may be any bit in the port.
+ */
+#define USB_CFG_DPLUS_BIT       2
+/* This is the bit number in USB_CFG_IOPORT where the USB D+ line is connected.
+ * This may be any bit in the port. Please note that D+ must also be connected
+ * to interrupt pin INT0! [You can also use other interrupts, see section
+ * "Optional MCU Description" below, or you can connect D- to the interrupt, as
+ * it is required if you use the USB_COUNT_SOF feature. If you use D- for the
+ * interrupt, the USB interrupt will also be triggered at Start-Of-Frame
+ * markers every millisecond.]
+ */
+#define USB_CFG_CLOCK_KHZ       (F_CPU/1000)
+/* Clock rate of the AVR in kHz. Legal values are 12000, 12800, 15000, 16000,
+ * 16500, 18000 and 20000. The 12.8 MHz and 16.5 MHz versions of the code
+ * require no crystal, they tolerate +/- 1% deviation from the nominal
+ * frequency. All other rates require a precision of 2000 ppm and thus a
+ * crystal!
+ * Since F_CPU should be defined to your actual clock rate anyway, you should
+ * not need to modify this setting.
+ */
+#define USB_CFG_CHECK_CRC       0
+/* Define this to 1 if you want that the driver checks integrity of incoming
+ * data packets (CRC checks). CRC checks cost quite a bit of code size and are
+ * currently only available for 18 MHz crystal clock. You must choose
+ * USB_CFG_CLOCK_KHZ = 18000 if you enable this option.
+ */
+
+/* ----------------------- Optional Hardware Config ------------------------ */
+
+/* #define USB_CFG_PULLUP_IOPORTNAME   D */
+/* If you connect the 1.5k pullup resistor from D- to a port pin instead of
+ * V+, you can connect and disconnect the device from firmware by calling
+ * the macros usbDeviceConnect() and usbDeviceDisconnect() (see usbdrv.h).
+ * This constant defines the port on which the pullup resistor is connected.
+ */
+/* #define USB_CFG_PULLUP_BIT          4 */
+/* This constant defines the bit number in USB_CFG_PULLUP_IOPORT (defined
+ * above) where the 1.5k pullup resistor is connected. See description
+ * above for details.
+ */
+
+/* --------------------------- Functional Range ---------------------------- */
+
+#define USB_CFG_HAVE_INTRIN_ENDPOINT    1
+/* Define this to 1 if you want to compile a version with two endpoints: The
+ * default control endpoint 0 and an interrupt-in endpoint (any other endpoint
+ * number).
+ */
+#define USB_CFG_HAVE_INTRIN_ENDPOINT3   1
+/* Define this to 1 if you want to compile a version with three endpoints: The
+ * default control endpoint 0, an interrupt-in endpoint 3 (or the number
+ * configured below) and a catch-all default interrupt-in endpoint as above.
+ * You must also define USB_CFG_HAVE_INTRIN_ENDPOINT to 1 for this feature.
+ */
+#define USB_CFG_EP3_NUMBER              3
+/* If the so-called endpoint 3 is used, it can now be configured to any other
+ * endpoint number (except 0) with this macro. Default if undefined is 3.
+ */
+/* #define USB_INITIAL_DATATOKEN           USBPID_DATA1 */
+/* The above macro defines the startup condition for data toggling on the
+ * interrupt/bulk endpoints 1 and 3. Defaults to USBPID_DATA1.
+ * Since the token is toggled BEFORE sending any data, the first packet is
+ * sent with the oposite value of this configuration!
+ */
+#define USB_CFG_IMPLEMENT_HALT          0
+/* Define this to 1 if you also want to implement the ENDPOINT_HALT feature
+ * for endpoint 1 (interrupt endpoint). Although you may not need this feature,
+ * it is required by the standard. We have made it a config option because it
+ * bloats the code considerably.
+ */
+#define USB_CFG_SUPPRESS_INTR_CODE      0
+/* Define this to 1 if you want to declare interrupt-in endpoints, but don't
+ * want to send any data over them. If this macro is defined to 1, functions
+ * usbSetInterrupt() and usbSetInterrupt3() are omitted. This is useful if
+ * you need the interrupt-in endpoints in order to comply to an interface
+ * (e.g. HID), but never want to send any data. This option saves a couple
+ * of bytes in flash memory and the transmit buffers in RAM.
+ */
+#define USB_CFG_INTR_POLL_INTERVAL      1
+/* If you compile a version with endpoint 1 (interrupt-in), this is the poll
+ * interval. The value is in milliseconds and must not be less than 10 ms for
+ * low speed devices.
+ */
+#define USB_CFG_IS_SELF_POWERED         0
+/* Define this to 1 if the device has its own power supply. Set it to 0 if the
+ * device is powered from the USB bus.
+ */
+#define USB_CFG_MAX_BUS_POWER           500
+/* Set this variable to the maximum USB bus power consumption of your device.
+ * The value is in milliamperes. [It will be divided by two since USB
+ * communicates power requirements in units of 2 mA.]
+ */
+#define USB_CFG_IMPLEMENT_FN_WRITE      1
+/* Set this to 1 if you want usbFunctionWrite() to be called for control-out
+ * transfers. Set it to 0 if you don't need it and want to save a couple of
+ * bytes.
+ */
+#define USB_CFG_IMPLEMENT_FN_READ       0
+/* Set this to 1 if you need to send control replies which are generated
+ * "on the fly" when usbFunctionRead() is called. If you only want to send
+ * data from a static buffer, set it to 0 and return the data from
+ * usbFunctionSetup(). This saves a couple of bytes.
+ */
+#define USB_CFG_IMPLEMENT_FN_WRITEOUT   0
+/* Define this to 1 if you want to use interrupt-out (or bulk out) endpoints.
+ * You must implement the function usbFunctionWriteOut() which receives all
+ * interrupt/bulk data sent to any endpoint other than 0. The endpoint number
+ * can be found in 'usbRxToken'.
+ */
+#define USB_CFG_HAVE_FLOWCONTROL        0
+/* Define this to 1 if you want flowcontrol over USB data. See the definition
+ * of the macros usbDisableAllRequests() and usbEnableAllRequests() in
+ * usbdrv.h.
+ */
+#define USB_CFG_DRIVER_FLASH_PAGE       0
+/* If the device has more than 64 kBytes of flash, define this to the 64 k page
+ * where the driver's constants (descriptors) are located. Or in other words:
+ * Define this to 1 for boot loaders on the ATMega128.
+ */
+#define USB_CFG_LONG_TRANSFERS          0
+/* Define this to 1 if you want to send/receive blocks of more than 254 bytes
+ * in a single control-in or control-out transfer. Note that the capability
+ * for long transfers increases the driver size.