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diff --git a/keyboards/bpiphany/hid_liber/matrix.c b/keyboards/bpiphany/hid_liber/matrix.c
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+/* Copyright 2012 Jun Wako <wakojun@gmail.com>: TMK Matrix
+ * Copyright 2018 bakageta <amo@bakageta.com>
+ *
+ * This is heavily based on hid_liber/board.{c|h}.
+ * https://github.com/BathroomEpiphanies/AVR-Keyboard
+ *
+ * Copyright (c) 2012 Fredrik Atmer, Bathroom Epiphanies Inc
+ * http://bathroomepiphanies.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 <stdint.h>
+#include <stdbool.h>
+#if defined(__AVR__)
+#include <avr/io.h>
+#endif
+#include <util/delay.h>
+#include "wait.h"
+#include "print.h"
+#include "debug.h"
+#include "util.h"
+#include "matrix.h"
+#include "timer.h"
+
+
+#ifndef DEBOUNCE
+# define DEBOUNCE 5
+#endif
+static uint8_t debouncing = DEBOUNCE;
+
+// bit array of key state(1:on, 0:off)
+static matrix_row_t matrix[MATRIX_ROWS];
+static matrix_row_t matrix_debouncing[MATRIX_ROWS];
+
+
+#define _DDRA (uint8_t *const)&DDRA
+#define _DDRB (uint8_t *const)&DDRB
+#define _DDRC (uint8_t *const)&DDRC
+#define _DDRD (uint8_t *const)&DDRD
+#define _DDRE (uint8_t *const)&DDRE
+#define _DDRF (uint8_t *const)&DDRF
+
+#define _PINA (uint8_t *const)&PINA
+#define _PINB (uint8_t *const)&PINB
+#define _PINC (uint8_t *const)&PINC
+#define _PIND (uint8_t *const)&PIND
+#define _PINE (uint8_t *const)&PINE
+#define _PINF (uint8_t *const)&PINF
+
+#define _PORTA (uint8_t *const)&PORTA
+#define _PORTB (uint8_t *const)&PORTB
+#define _PORTC (uint8_t *const)&PORTC
+#define _PORTD (uint8_t *const)&PORTD
+#define _PORTE (uint8_t *const)&PORTE
+#define _PORTF (uint8_t *const)&PORTF
+
+#define _BIT0 0x01
+#define _BIT1 0x02
+#define _BIT2 0x04
+#define _BIT3 0x08
+#define _BIT4 0x10
+#define _BIT5 0x20
+#define _BIT6 0x40
+#define _BIT7 0x80
+
+/* Specifies the ports and pin numbers for the rows */
+static
+uint8_t *const row_ddr[MATRIX_ROWS] = {
+ _DDRB, _DDRB,
+ _DDRC, _DDRC,
+ _DDRD, _DDRD, _DDRD, _DDRD, _DDRD, _DDRD, _DDRD, _DDRD,
+ _DDRF, _DDRF, _DDRF, _DDRF, _DDRF, _DDRF};
+
+static
+uint8_t *const row_port[MATRIX_ROWS] = {
+ _PORTB, _PORTB,
+ _PORTC, _PORTC,
+ _PORTD, _PORTD, _PORTD, _PORTD, _PORTD, _PORTD, _PORTD, _PORTD,
+ _PORTF, _PORTF, _PORTF, _PORTF, _PORTF, _PORTF};
+
+static
+uint8_t *const row_pin[MATRIX_ROWS] = {
+ _PINB, _PINB,
+ _PINC, _PINC,
+ _PIND, _PIND, _PIND, _PIND, _PIND, _PIND, _PIND, _PIND,
+ _PINF, _PINF, _PINF, _PINF, _PINF, _PINF};
+
+static
+const uint8_t row_bit[MATRIX_ROWS] = {
+ _BIT4, _BIT7,
+ _BIT6, _BIT7,
+ _BIT0, _BIT1, _BIT2, _BIT3, _BIT4, _BIT5, _BIT6, _BIT7,
+ _BIT0, _BIT1, _BIT4, _BIT5, _BIT6, _BIT7};
+
+static
+const uint8_t mask = 0x0E;
+
+/* Specifies the ports and pin numbers for the columns */
+static
+const uint8_t col_bit[MATRIX_COLS] = { 0x00, 0x02, 0x04, 0x06, 0x08, 0x0A, 0x0C, 0x0E};
+
+__attribute__ ((weak))
+void matrix_init_kb(void) {
+ matrix_init_user();
+}
+
+__attribute__ ((weak))
+void matrix_scan_kb(void) {
+ matrix_scan_user();
+}
+
+__attribute__ ((weak))
+void matrix_init_user(void) {
+}
+
+__attribute__ ((weak))
+void matrix_scan_user(void) {
+}
+
+static
+inline void pull_column(int col) {
+ PORTB = col_bit[col] | (PORTB & ~mask);
+}
+
+static
+inline void release_column(int col) {
+}
+
+/* PORTB is set as input with pull-up resistors
+ PORTC,D,E,F are set to high output */
+static
+void setup_io_pins(void) {
+ uint8_t row;
+ DDRB |= 0x0E;
+ PORTB &= ~0x0E;
+ for(row = 0; row < MATRIX_ROWS; row++) {
+ *row_ddr[row] &= ~row_bit[row];
+ *row_port[row] &= ~row_bit[row];
+ }
+}
+
+static
+void setup_leds(void) {
+ DDRB |= 0x60;
+ PORTB |= 0x60;
+}
+
+
+inline
+uint8_t matrix_rows(void)
+{
+ return MATRIX_ROWS;
+}
+
+inline
+uint8_t matrix_cols(void)
+{
+ return MATRIX_COLS;
+}
+
+void matrix_init(void)
+{
+ // initialize row and col
+ setup_io_pins();
+ setup_leds();
+
+ // initialize matrix state: all keys off
+ for (uint8_t i=0; i < MATRIX_ROWS; i++) {
+ matrix[i] = 0;
+ matrix_debouncing[i] = 0;
+ }
+
+ matrix_init_quantum();
+}
+
+uint8_t matrix_scan(void)
+{
+ for (uint8_t col = 0; col < MATRIX_COLS; col++) { // 0-7
+ pull_column(col); // output hi on theline
+ _delay_us(5); // without this wait it won't read stable value.
+ for (uint8_t row = 0; row < MATRIX_ROWS; row++) { // 0-17
+ bool prev_bit = matrix_debouncing[row] & (1<<col);
+ bool curr_bit = *row_pin[row] & row_bit[row];
+ if (prev_bit != curr_bit) {
+ matrix_debouncing[row] ^= ((matrix_row_t)1<<col);
+ if (debouncing) {
+ dprintf("bounce!: %02X\n", debouncing);
+ }
+ debouncing = DEBOUNCE;
+ }
+ }
+ release_column(col);
+ }
+
+ 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;
+}
+
+inline
+bool matrix_has_ghost(void)
+{
+ return false;
+}
+
+inline
+bool matrix_is_on(uint8_t row, uint8_t col)
+{
+ return (matrix[row] & ((matrix_row_t)1<<col));
+}
+
+inline
+matrix_row_t matrix_get_row(uint8_t row)
+{
+ return matrix[row];
+}
+
+void matrix_print(void)
+{
+ print("\nr/c 01234567\n");
+ for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
+ print_hex8(row); print(": ");
+ print_bin_reverse8(matrix_get_row(row));
+ print("\n");
+ }
+}
+
+uint8_t matrix_key_count(void)
+{
+ uint8_t count = 0;
+ for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
+ for (uint8_t j = 0; j < MATRIX_COLS; j++) {
+ if (matrix_is_on(i, j))
+ count++;
+ }
+ }
+ return count;
+}