[Keyboard] Move more percent boards into the percent directory (#6781)

* move canoe into percent directory

* update readme for new make path

* move skog into percent directory

* update readme for new path and new instructions

* update readme

* fix error in naming

14 files changed, 1320 insertions, 0 deletions

diff --git a/keyboards/percent/skog/README.md b/keyboards/percent/skog/README.md
new file mode 100644
index 0000000000..5b7dacd915
--- /dev/null
+++ b/keyboards/percent/skog/README.md
@@ -0,0 +1,45 @@
+# Skog TKL
+
+Keyboard Maintainer: QMK Community  
+Hardware Supported: Skog PCB  
+Hardware Availability: https://geekhack.org/index.php?topic=87953.0
+
+Make example for this keyboard (after setting up your build environment):
+
+    make percent/skog:default
+
+Flashing
+
+ps2avr(GB) boards use an atmega32a microcontroller and a different bootloader. It is not flashable using the regular QMK methods. 
+
+**Reset Key:** Hold down the key located at `K00`, commonly programmed as Pause while plugging in the keyboard.
+
+Windows: 
+1. Download [HIDBootFlash](http://vusb.wikidot.com/project:hidbootflash).
+2. Place your keyboard into reset. 
+3. Press the `Find Device` button and ensure that your keyboard is found.
+4. Press the `Open .hex File` button and locate the `.hex` file you created.
+5. Press the `Flash Device` button and wait for the process to complete. 
+
+macOS:
+1. Install homebrew by typing the following:   
+    ```
+    /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
+    ```
+2. Install `crosspack-avr`.  
+    ```
+    brew cask install crosspack-avr
+    ```
+3. Install the following packages:
+    ```
+    brew install python3
+    pip3 install pyusb
+    brew install --HEAD https://raw.githubusercontent.com/robertgzr/homebrew-tap/master/bootloadhid.rb
+    ```
+
+4. Place your keyboard into reset. 
+5. Flash the board by typing `bootloadHID -r` followed by the path to your `.hex` file. 
+
+**Please Note:** You will need to use the `EEP_RST` keycode first, followed by unplugging/replugging the board to get RGB underglow effects to work.
+
+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).
\ No newline at end of file
diff --git a/keyboards/percent/skog/backlight.c b/keyboards/percent/skog/backlight.c
new file mode 100644
index 0000000000..94e8126d88
--- /dev/null
+++ b/keyboards/percent/skog/backlight.c
@@ -0,0 +1,211 @@
+/**
+ * Backlighting code for PS2AVRGB boards (ATMEGA32A)
+ * Kenneth A. (github.com/krusli | krusli.me)
+ */
+
+#include "backlight.h"
+#include "quantum.h"
+
+#include <avr/pgmspace.h>
+#include <avr/interrupt.h>
+
+#include "backlight_custom.h"
+#include "breathing_custom.h"
+
+// DEBUG
+#include <stdlib.h>
+#include <stdio.h>
+
+// Port D: digital pins of the AVR chipset
+#define NUMLOCK_PORT    (1 << 0)  // D0
+#define CAPSLOCK_PORT   (1 << 1)  // D1
+#define BACKLIGHT_PORT  (1 << 4)  // D4
+#define SCROLLLOCK_PORT (1 << 6)  // D6
+
+#define TIMER_CLK_DIV64			  0x03	///< Timer clocked at F_CPU/64
+#define TIMER1PRESCALE	TIMER_CLK_DIV64 ///< timer 1 prescaler default
+
+#define TIMER_PRESCALE_MASK		0x07	///< Timer Prescaler Bit-Mask
+
+#define PWM_MAX 0xFF
+#define TIMER_TOP 255 // 8 bit PWM
+
+extern backlight_config_t backlight_config;
+
+/**
+ * References
+ * Port Registers: https://www.arduino.cc/en/Reference/PortManipulation
+ * TCCR1A: https://electronics.stackexchange.com/questions/92350/what-is-the-difference-between-tccr1a-and-tccr1b
+ * Timers: http://www.avrbeginners.net/architecture/timers/timers.html
+ * 16-bit timer setup: http://sculland.com/ATmega168/Interrupts-And-Timers/16-Bit-Timer-Setup/
+ * PS2AVRGB firmware: https://github.com/showjean/ps2avrU/tree/master/firmware
+ */
+
+// @Override
+// turn LEDs on and off depending on USB caps/num/scroll lock states.
+__attribute__ ((weak))
+void led_set_user(uint8_t usb_led) {
+    if (usb_led & (1 << USB_LED_NUM_LOCK)) {
+      // turn on
+      DDRD  |= NUMLOCK_PORT;
+      PORTD |= NUMLOCK_PORT;
+    } else {
+      // turn off
+      DDRD  &= ~NUMLOCK_PORT;
+      PORTD &= ~NUMLOCK_PORT;
+    }
+
+    if (usb_led & (1 << USB_LED_CAPS_LOCK)) {
+      DDRD  |= CAPSLOCK_PORT;
+      PORTD |= CAPSLOCK_PORT;
+    } else {
+      DDRD  &= ~CAPSLOCK_PORT;
+      PORTD &= ~CAPSLOCK_PORT;
+    }
+
+    if (usb_led & (1 << USB_LED_SCROLL_LOCK)) {
+      DDRD  |= SCROLLLOCK_PORT;
+      PORTD |= SCROLLLOCK_PORT;
+    } else {
+      DDRD  &= ~SCROLLLOCK_PORT;
+      PORTD &= ~SCROLLLOCK_PORT;
+    }
+}
+
+#ifdef BACKLIGHT_ENABLE
+
+// sets up Timer 1 for 8-bit PWM
+void timer1PWMSetup(void) { // NOTE ONLY CALL THIS ONCE
+  // default 8 bit mode
+  TCCR1A &= ~(1 << 1); // cbi(TCCR1A,PWM11); <- set PWM11 bit to HIGH
+  TCCR1A |= (1 << 0);  // sbi(TCCR1A,PWM10); <- set PWM10 bit to LOW
+
+  // clear output compare value A
+  // outb(OCR1AH, 0);
+  // outb(OCR1AL, 0);
+
+  // clear output comparator registers for B
+	OCR1BH = 0; // outb(OCR1BH, 0);
+	OCR1BL = 0; // outb(OCR1BL, 0);
+}
+
+bool is_init = false;
+void timer1Init(void) {
+  // timer1SetPrescaler(TIMER1PRESCALE)
+  // set to DIV/64
+  (TCCR1B) = ((TCCR1B) & ~TIMER_PRESCALE_MASK) | TIMER1PRESCALE;
+
+  // reset TCNT1
+  TCNT1H = 0;  // outb(TCNT1H, 0);
+	TCNT1L = 0;  // outb(TCNT1L, 0);
+
+  // TOIE1: Timer Overflow Interrupt Enable (Timer 1);
+	TIMSK |= _BV(TOIE1); // sbi(TIMSK, TOIE1);
+
+  is_init = true;
+}
+
+void timer1UnInit(void) {
+  // set prescaler back to NONE
+  (TCCR1B) = ((TCCR1B) & ~TIMER_PRESCALE_MASK) | 0x00;  // TIMERRTC_CLK_STOP
+
+  // disable timer overflow interrupt
+  TIMSK &= ~_BV(TOIE1); // overflow bit?
+
+  setPWM(0);
+
+  is_init = false;
+}
+
+
+// handle TCNT1 overflow
+//! Interrupt handler for tcnt1 overflow interrupt
+ISR(TIMER1_OVF_vect, ISR_NOBLOCK)
+{
+	// sei();
+  // handle breathing here
+  #ifdef BACKLIGHT_BREATHING
+  if (is_breathing()) {
+    custom_breathing_handler();
+  }
+  #endif
+}
+
+// enable timer 1 PWM
+// timer1PWMBOn()
+void timer1PWMBEnable(void) {
+  // turn on channel B (OC1B) PWM output
+  // set OC1B as non-inverted PWM
+  TCCR1A |= _BV(COM1B1);
+  TCCR1A &= ~_BV(COM1B0);
+}
+
+// disable timer 1 PWM
+// timer1PWMBOff()
+void timer1PWMBDisable(void) {
+  TCCR1A &= ~_BV(COM1B1);
+  TCCR1A &= ~_BV(COM1B0);
+}
+
+void enableBacklight(void) {
+  DDRD  |= BACKLIGHT_PORT;  // set digital pin 4 as output
+  PORTD |= BACKLIGHT_PORT;  // set digital pin 4 to high
+}
+
+void disableBacklight(void) {
+  // DDRD  &= ~BACKLIGHT_PORT;  // set digital pin 4 as input
+  PORTD &= ~BACKLIGHT_PORT;  // set digital pin 4 to low
+}
+
+void startPWM(void) {
+  timer1Init();
+  timer1PWMBEnable();
+  enableBacklight();
+}
+
+void stopPWM(void) {
+  timer1UnInit();
+  disableBacklight();
+  timer1PWMBDisable();
+}
+
+void b_led_init_ports(void) {
+  /* turn backlight on/off depending on user preference */
+  #if BACKLIGHT_ON_STATE == 0
+    // DDRx register: sets the direction of Port D
+    // DDRD  &= ~BACKLIGHT_PORT;  // set digital pin 4 as input
+    PORTD &= ~BACKLIGHT_PORT;  // set digital pin 4 to low
+  #else
+    DDRD  |= BACKLIGHT_PORT;  // set digital pin 4 as output
+    PORTD |= BACKLIGHT_PORT;  // set digital pin 4 to high
+  #endif
+
+  timer1PWMSetup();
+  startPWM();
+
+  #ifdef BACKLIGHT_BREATHING
+  breathing_enable();
+  #endif
+}
+
+void b_led_set(uint8_t level) {
+  if (level > BACKLIGHT_LEVELS) {
+    level = BACKLIGHT_LEVELS;
+  }
+
+  setPWM((int)(TIMER_TOP * (float) level / BACKLIGHT_LEVELS));
+}
+
+// called every matrix scan
+void b_led_task(void) {
+  // do nothing for now
+}
+
+void setPWM(uint16_t xValue) {
+  if (xValue > TIMER_TOP) {
+    xValue = TIMER_TOP;
+  }
+  OCR1B = xValue; // timer1PWMBSet(xValue);
+}
+
+#endif  // BACKLIGHT_ENABLE
diff --git a/keyboards/percent/skog/backlight_custom.h b/keyboards/percent/skog/backlight_custom.h
new file mode 100644
index 0000000000..51365fe3ba
--- /dev/null
+++ b/keyboards/percent/skog/backlight_custom.h
@@ -0,0 +1,13 @@
+/**
+ * Backlighting code for PS2AVRGB boards (ATMEGA32A)
+ * Kenneth A. (github.com/krusli | krusli.me)
+ */
+
+#pragma once
+
+#include <avr/pgmspace.h>
+void b_led_init_ports(void);
+void b_led_set(uint8_t level);
+void b_led_task(void);
+void setPWM(uint16_t xValue);
+
diff --git a/keyboards/percent/skog/breathing_custom.h b/keyboards/percent/skog/breathing_custom.h
new file mode 100644
index 0000000000..71416b1b45
--- /dev/null
+++ b/keyboards/percent/skog/breathing_custom.h
@@ -0,0 +1,140 @@
+/**
+ * Breathing effect code for PS2AVRGB boards (ATMEGA32A)
+ * Works in conjunction with `backlight.c`.
+ *
+ * Code adapted from `quantum.c` to register with the existing TIMER1 overflow
+ * handler in `backlight.c` instead of setting up its own timer.
+ * Kenneth A. (github.com/krusli | krusli.me)
+ */
+
+#ifdef BACKLIGHT_ENABLE
+#ifdef BACKLIGHT_BREATHING
+
+#include "backlight_custom.h"
+
+#ifndef BREATHING_PERIOD
+#define BREATHING_PERIOD 6
+#endif
+
+#define breathing_min() do {breathing_counter = 0;} while (0)
+#define breathing_max() do {breathing_counter = breathing_period * 244 / 2;} while (0)
+
+// TODO make this share code with quantum.c
+
+#define BREATHING_NO_HALT  0
+#define BREATHING_HALT_OFF 1
+#define BREATHING_HALT_ON  2
+#define BREATHING_STEPS 128
+
+static uint8_t breathing_period = BREATHING_PERIOD;
+static uint8_t breathing_halt = BREATHING_NO_HALT;
+static uint16_t breathing_counter = 0;
+
+static bool breathing = false;
+
+bool is_breathing(void) {
+  return breathing;
+}
+
+// See http://jared.geek.nz/2013/feb/linear-led-pwm
+static uint16_t cie_lightness(uint16_t v) {
+  if (v <= 5243) // if below 8% of max
+    return v / 9; // same as dividing by 900%
+  else {
+    uint32_t y = (((uint32_t) v + 10486) << 8) / (10486 + 0xFFFFUL); // add 16% of max and compare
+    // to get a useful result with integer division, we shift left in the expression above
+    // and revert what we've done again after squaring.
+    y = y * y * y >> 8;
+    if (y > 0xFFFFUL) // prevent overflow
+      return 0xFFFFU;
+    else
+      return (uint16_t) y;
+  }
+}
+
+void breathing_enable(void) {
+  breathing = true;
+  breathing_counter = 0;
+  breathing_halt = BREATHING_NO_HALT;
+  // interrupt already registered
+}
+
+void breathing_pulse(void) {
+  if (get_backlight_level() == 0)
+    breathing_min();
+  else
+    breathing_max();
+  breathing_halt = BREATHING_HALT_ON;
+  // breathing_interrupt_enable();
+  breathing = true;
+}
+
+void breathing_disable(void) {
+  breathing = false;
+  // backlight_set(get_backlight_level());
+  b_led_set(get_backlight_level()); // custom implementation of backlight_set()
+}
+
+void breathing_self_disable(void)
+{
+  if (get_backlight_level() == 0)
+    breathing_halt = BREATHING_HALT_OFF;
+  else
+    breathing_halt = BREATHING_HALT_ON;
+}
+
+void breathing_toggle(void) {
+  if (is_breathing())
+    breathing_disable();
+  else
+    breathing_enable();
+}
+
+void breathing_period_set(uint8_t value)
+{
+  if (!value)
+    value = 1;
+  breathing_period = value;
+}
+
+void breathing_period_default(void) {
+  breathing_period_set(BREATHING_PERIOD);
+}
+
+void breathing_period_inc(void)
+{
+  breathing_period_set(breathing_period+1);
+}
+
+void breathing_period_dec(void)
+{
+  breathing_period_set(breathing_period-1);
+}
+
+/* To generate breathing curve in python:
+ * from math import sin, pi; [int(sin(x/128.0*pi)**4*255) for x in range(128)]
+ */
+static const uint8_t breathing_table[BREATHING_STEPS] PROGMEM = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 24, 28, 32, 36, 41, 46, 51, 57, 63, 70, 76, 83, 91, 98, 106, 113, 121, 129, 138, 146, 154, 162, 170, 178, 185, 193, 200, 207, 213, 220, 225, 231, 235, 240, 244, 247, 250, 252, 253, 254, 255, 254, 253, 252, 250, 247, 244, 240, 235, 231, 225, 220, 213, 207, 200, 193, 185, 178, 170, 162, 154, 146, 138, 129, 121, 113, 106, 98, 91, 83, 76, 70, 63, 57, 51, 46, 41, 36, 32, 28, 24, 20, 17, 15, 12, 10, 8, 6, 5, 4, 3, 2, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
+
+// Use this before the cie_lightness function.
+static inline uint16_t scale_backlight(uint16_t v) {
+  return v / BACKLIGHT_LEVELS * get_backlight_level();
+}
+
+void custom_breathing_handler(void) {
+  uint16_t interval = (uint16_t) breathing_period * 244 / BREATHING_STEPS;
+  // resetting after one period to prevent ugly reset at overflow.
+  breathing_counter = (breathing_counter + 1) % (breathing_period * 244);
+  uint8_t index = breathing_counter / interval % BREATHING_STEPS;
+
+  if (((breathing_halt == BREATHING_HALT_ON) && (index == BREATHING_STEPS / 2)) ||
+      ((breathing_halt == BREATHING_HALT_OFF) && (index == BREATHING_STEPS - 1)))
+  {
+      // breathing_interrupt_disable();
+  }
+
+  setPWM(cie_lightness(scale_backlight((uint16_t) pgm_read_byte(&breathing_table[index]) * 0x0101U)));
+}
+
+#endif // BACKLIGHT_BREATHING
+#endif  // BACKLIGHT_ENABLE
diff --git a/keyboards/percent/skog/config.h b/keyboards/percent/skog/config.h
new file mode 100644
index 0000000000..ed7c558db7
--- /dev/null
+++ b/keyboards/percent/skog/config.h
@@ -0,0 +1,38 @@
+/*
+Copyright 2018 Jumail Mundekkat / MxBlue
+
+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
+
+#define VENDOR_ID       0x20A0
+#define PRODUCT_ID      0x422D
+
+#define MANUFACTURER    Percent
+#define PRODUCT         Skog TKL
+
+/* matrix size */
+#define MATRIX_ROWS 8
+#define MATRIX_COLS 14
+
+#define RGBLED_NUM 2
+#define RGBLIGHT_ANIMATIONS
+
+#define BACKLIGHT_LEVELS 5
+
+#define NO_UART 1
+
+#endif
diff --git a/keyboards/percent/skog/i2c.c b/keyboards/percent/skog/i2c.c
new file mode 100644
index 0000000000..a4f9521352
--- /dev/null
+++ b/keyboards/percent/skog/i2c.c
@@ -0,0 +1,106 @@
+/*
+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/>.
+*/
+
+// Please do not modify this file 
+
+#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/percent/skog/i2c.h b/keyboards/percent/skog/i2c.h
new file mode 100644
index 0000000000..ada8cc7bf1
--- /dev/null
+++ b/keyboards/percent/skog/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/>.
+*/
+
+// Please do not modify this file 
+
+#pragma once
+
+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);
+
diff --git a/keyboards/percent/skog/info.json b/keyboards/percent/skog/info.json
new file mode 100644
index 0000000000..06fad3a741
--- /dev/null
+++ b/keyboards/percent/skog/info.json
@@ -0,0 +1,12 @@
+{
+    "keyboard_name": "skog",
+    "url": "",
+    "maintainer": "qmk",
+    "width": 18.25,
+    "height": 6.5,
+    "layouts": {
+      "LAYOUT": {
+        "layout": [{"x":0, "y":0}, {"x":2, "y":0}, {"x":3, "y":0}, {"x":4, "y":0}, {"x":5, "y":0}, {"x":6.5, "y":0}, {"x":7.5, "y":0}, {"x":8.5, "y":0}, {"x":9.5, "y":0}, {"x":11, "y":0}, {"x":12, "y":0}, {"x":13, "y":0}, {"x":14, "y":0}, {"x":15.25, "y":0}, {"x":16.25, "y":0}, {"x":17.25, "y":0}, {"x":0, "y":1.5}, {"x":1, "y":1.5}, {"x":2, "y":1.5}, {"x":3, "y":1.5}, {"x":4, "y":1.5}, {"x":5, "y":1.5}, {"x":6, "y":1.5}, {"x":7, "y":1.5}, {"x":8, "y":1.5}, {"x":9, "y":1.5}, {"x":10, "y":1.5}, {"x":11, "y":1.5}, {"x":12, "y":1.5}, {"x":13, "y":1.5, "w":2}, {"x":15.25, "y":1.5}, {"x":16.25, "y":1.5}, {"x":17.25, "y":1.5}, {"x":0, "y":2.5, "w":1.5}, {"x":1.5, "y":2.5}, {"x":2.5, "y":2.5}, {"x":3.5, "y":2.5}, {"x":4.5, "y":2.5}, {"x":5.5, "y":2.5}, {"x":6.5, "y":2.5}, {"x":7.5, "y":2.5}, {"x":8.5, "y":2.5}, {"x":9.5, "y":2.5}, {"x":10.5, "y":2.5}, {"x":11.5, "y":2.5}, {"x":12.5, "y":2.5}, {"x":13.5, "y":2.5, "w":1.5}, {"x":15.25, "y":2.5}, {"x":16.25, "y":2.5}, {"x":17.25, "y":2.5}, {"x":0, "y":3.5, "w":1.75}, {"x":1.75, "y":3.5}, {"x":2.75, "y":3.5}, {"x":3.75, "y":3.5}, {"x":4.75, "y":3.5}, {"x":5.75, "y":3.5}, {"x":6.75, "y":3.5}, {"x":7.75, "y":3.5}, {"x":8.75, "y":3.5}, {"x":9.75, "y":3.5}, {"x":10.75, "y":3.5}, {"x":11.75, "y":3.5}, {"x":12.75, "y":3.5, "w":2.25}, {"x":0, "y":4.5, "w":2.25}, {"x":2.25, "y":4.5}, {"x":3.25, "y":4.5}, {"x":4.25, "y":4.5}, {"x":5.25, "y":4.5}, {"x":6.25, "y":4.5}, {"x":7.25, "y":4.5}, {"x":8.25, "y":4.5}, {"x":9.25, "y":4.5}, {"x":10.25, "y":4.5}, {"x":11.25, "y":4.5}, {"x":12.25, "y":4.5, "w":1.75}, {"x":14, "y":4.5}, {"x":16.25, "y":4.5}, {"x":0, "y":5.5, "w":1.25}, {"x":1.25, "y":5.5, "w":1.25}, {"x":2.5, "y":5.5, "w":1.25}, {"x":3.75, "y":5.5, "w":6.25}, {"x":10, "y":5.5, "w":1.25}, {"x":11.25, "y":5.5, "w":1.25}, {"x":12.5, "y":5.5, "w":1.25}, {"x":13.75, "y":5.5, "w":1.25}, {"x":15.25, "y":5.5}, {"x":16.25, "y":5.5}, {"x":17.25, "y":5.5}]
+      }
+    }
+}
diff --git a/keyboards/percent/skog/keymaps/default/keymap.c b/keyboards/percent/skog/keymaps/default/keymap.c
new file mode 100644
index 0000000000..eefc24cb0d
--- /dev/null
+++ b/keyboards/percent/skog/keymaps/default/keymap.c
@@ -0,0 +1,37 @@
+/*
+Copyright 2018 Jumail Mundekkat / MxBlue
+
+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 QMK_KEYBOARD_H
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    [0] = LAYOUT(
+      KC_ESC,           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_PSCR, KC_SLCK, KC_PAUS,
+      KC_GRV,  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_BSPC,                 KC_INS,  KC_HOME, KC_PGUP,
+      KC_TAB,  KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,    KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,     KC_LBRC,    KC_RBRC,    KC_BSLS,                 KC_DEL,  KC_END,  KC_PGDN,
+      KC_CAPS, KC_A,    KC_S,    KC_D,    KC_F,    KC_G,    KC_H,    KC_J,    KC_K,    KC_L,    KC_SCLN,  KC_QUOT,            KC_ENT,
+           KC_LSFT    , KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_N,    KC_M,    KC_COMM, KC_DOT,   KC_SLSH,    KC_LSFT,    KC_TRNS,                          KC_UP,
+      KC_LCTL, KC_LGUI, KC_LALT,                   KC_SPC,                                      KC_RALT,  KC_RGUI,    KC_MENU,    KC_RCTL,                 KC_LEFT, KC_DOWN, KC_RGHT
+    )
+};
+
+void matrix_init_user(void) {
+
+}
+
+void matrix_scan_user(void) {
+
+}
diff --git a/keyboards/percent/skog/matrix.c b/keyboards/percent/skog/matrix.c
new file mode 100644
index 0000000000..245813dfd2
--- /dev/null
+++ b/keyboards/percent/skog/matrix.c
@@ -0,0 +1,112 @@
+/*
+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_set_row_status(uint8_t row);
+uint8_t bit_reverse(uint8_t x);
+
+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;
+    }
+
+    matrix_init_quantum();
+}
+
+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_quantum();
+
+    return 1;
+}
+
+// declarations
+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;
+}
+
+inline matrix_row_t matrix_get_row(uint8_t row) {
+    return matrix[row];
+}
+
+void matrix_print(void) {
+}
diff --git a/keyboards/percent/skog/rules.mk b/keyboards/percent/skog/rules.mk
new file mode 100644
index 0000000000..b8439906b8
--- /dev/null
+++ b/keyboards/percent/skog/rules.mk
@@ -0,0 +1,48 @@
+# Copyright 2018 Jumail Mundekkat / MxBlue
+#
+# 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
+
+# Bootloader selection
+#   Teensy       halfkay
+#   Pro Micro    caterina
+#   Atmel DFU    atmel-dfu
+#   LUFA DFU     lufa-dfu
+#   QMK DFU      qmk-dfu
+#   ATmega32A    bootloadHID
+#   ATmega328P   USBasp
+BOOTLOADER = bootloadHID
+
+# build options
+BOOTMAGIC_ENABLE = full
+MOUSEKEY_ENABLE = no
+EXTRAKEY_ENABLE = yes
+CONSOLE_ENABLE = yes
+COMMAND_ENABLE = yes
+BACKLIGHT_ENABLE = yes
+RGBLIGHT_ENABLE = yes
+
+BACKLIGHT_CUSTOM_DRIVER = yes
+RGBLIGHT_CUSTOM_DRIVER = yes
+
+OPT_DEFS = -DDEBUG_LEVEL=0
+
+# Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
+SLEEP_LED_ENABLE = no    # Breathing sleep LED during USB suspend
+
+# custom matrix setup
+CUSTOM_MATRIX = yes
+SRC = matrix.c i2c.c backlight.c
diff --git a/keyboards/percent/skog/skog.c b/keyboards/percent/skog/skog.c
new file mode 100644
index 0000000000..3d1eb0e1a1
--- /dev/null
+++ b/keyboards/percent/skog/skog.c
@@ -0,0 +1,98 @@
+/*
+Copyright 2018 Jumail Mundekkat / MxBlue
+
+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/>.
+
+ps2avrGB support code by Kenneth A. (bminiex/.[ch])
+*/
+
+#include "skog.h"
+
+#include "rgblight.h"
+
+#include <avr/pgmspace.h>
+
+#include "action_layer.h"
+#include "i2c.h"
+#include "quantum.h"
+
+#include "backlight.h"
+#include "backlight_custom.h"
+
+// for keyboard subdirectory level init functions
+// @Override
+void matrix_init_kb(void) {
+  // call user level keymaps, if any
+  matrix_init_user();
+}
+
+#ifdef BACKLIGHT_ENABLE
+/// Overrides functions in `quantum.c`
+void backlight_init_ports(void) {
+  b_led_init_ports();
+}
+
+void backlight_task(void) {
+  b_led_task();
+}
+
+void backlight_set(uint8_t level) {
+  b_led_set(level);
+}
+#endif
+
+#ifdef RGBLIGHT_ENABLE
+extern rgblight_config_t rgblight_config;
+
+// custom RGB driver
+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);
+}
+
+bool rgb_init = false;
+
+void matrix_scan_kb(void) {
+  // if LEDs were previously on before poweroff, turn them back on
+  if (rgb_init == false && rgblight_config.enable) {
+    i2c_init();
+    i2c_send(0xb0, (uint8_t*)led, 3 * RGBLED_NUM);
+    rgb_init = true;
+  }
+
+  rgblight_task();
+#else
+void matrix_scan_kb(void) {
+#endif
+  matrix_scan_user();
+  /* Nothing else for now. */
+}
+
+__attribute__((weak)) // overridable
+void matrix_init_user(void) {
+
+}
+
+__attribute__((weak)) // overridable
+void matrix_scan_user(void) {
+
+}
diff --git a/keyboards/percent/skog/skog.h b/keyboards/percent/skog/skog.h
new file mode 100644
index 0000000000..17be94621b
--- /dev/null
+++ b/keyboards/percent/skog/skog.h
@@ -0,0 +1,39 @@
+/*
+Copyright 2018 Jumail Mundekkat / MxBlue
+
+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
+ME