[jackhill/qmk/firmware.git] / keyboards / duck / lightsaver / matrix.c

/*
Copyright 2016-2017 Ralf Schmitt <ralf@bunkertor.net> Rasmus Schults <rasmusx@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 <util/delay.h>
#include <avr/io.h>
#include <stdio.h>
#include "matrix.h"
#include "util.h"
#include "print.h"
#include "debug.h"

static uint8_t debouncing = DEBOUNCING_DELAY;

/* matrix state(1:on, 0:off) */
static matrix_row_t matrix[MATRIX_ROWS];
static matrix_row_t matrix_debouncing[MATRIX_ROWS];

static uint8_t read_rows(void);
static uint8_t read_fwkey(void);
static void init_rows(void);
static void unselect_cols(void);
static void select_col(uint8_t col);


__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) {
}

void matrix_init(void) {
  DDRD  |=  0b11010000;
  PORTD &= ~0b01010000;
  DDRB  |=  0b00011111;
  PORTB &= ~0b00001110;
  PORTB |=  0b00010001;
  DDRE  |=  0b01000000;
  PORTE &= ~0b01000000;

  unselect_cols();
  init_rows();

  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++) {
    select_col(col);
    _delay_us(3);

    uint8_t rows = read_rows();
    if(col == 0) {
      rows |= read_fwkey();
    }
    for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
      bool prev_bit = matrix_debouncing[row] & ((matrix_row_t)1<<col);
      bool curr_bit = rows & (1<<row);
      if (prev_bit != curr_bit) {
        matrix_debouncing[row] ^= ((matrix_row_t)1<<col);
        if (debouncing) {
            dprint("bounce!: "); dprintf("%02X", debouncing); dprintln();
        }        
        debouncing = DEBOUNCING_DELAY;
      }
    }
    unselect_cols();
  }

  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 matrix_row_t matrix_get_row(uint8_t row) {
  return matrix[row];
}

void matrix_print(void) {
  print("\nr/c 0123456789ABCDEF\n");
  for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
    xprintf("%02X: %032lb\n", row, bitrev32(matrix_get_row(row)));
  }
}

/* Row pin configuration
 * row: 0    1    2    3    4    5
 * pin: PB7  PD0  PD1  PD2  PD3  PD5
 *
 * Esc uses its own pin PE2
 */
static void init_rows(void) {
  DDRB  &= ~0b10000000;
  PORTB &= ~0b10000000;

  DDRD  &= ~0b00101111;
  PORTD &= ~0b00101111;

  DDRE  &= ~0b00000100;
  PORTE |=  0b00000100;
}

static uint8_t read_rows() {
  return (PINB&(1<<7) ? (1<<0) : 0) |
    (PIND&(1<<0) ? (1<<1) : 0) |
    (PIND&(1<<1) ? (1<<2) : 0) |
    (PIND&(1<<2) ? (1<<3) : 0) |
    (PIND&(1<<3) ? (1<<4) : 0) |
    (PIND&(1<<5) ? (1<<5) : 0);
}

static uint8_t read_fwkey(void)
{
  return PINE&(1<<2) ? 0 : (1<<0);
}

/* Columns 0 - 15
 * These columns uses two 74HC237D 3 to 8 bit demultiplexers.
 * col / pin:    PC6  PB6  PF0  PF1  PC7
 * 0:             1    0    0    0    0
 * 1:             1    0    1    0    0
 * 2:             1    0    0    1    0
 * 3:             1    0    1    1    0
 * 4:             1    0    0    0    1
 * 5:             1    0    1    0    1
 * 6:             1    0    0    1    1
 * 7:             1    0    1    1    1
 * 8:             0    1    0    0    0
 * 9:             0    1    1    0    0
 * 10:            0    1    0    1    0
 * 11:            0    1    1    1    0
 * 12:            0    1    0    0    1
 * 13:            0    1    1    0    1
 * 14:            0    1    0    1    1
 * 15:            0    1    1    1    1
 *
 * col: 16
 * pin: PB5
 *
 * col: 17
 * pin: PB4
 *
 * col: 18
 * pin: PD7
 */
static void unselect_cols(void) {
  DDRB  |=  0b01110000;
  PORTB &= ~0b01110000;

  DDRC |= (1<<6) | (1<<7);
  PORTC &= ~((1<<6) | (1<<7));

  DDRF |= (1<<0) | (1<<1);
  PORTF &= ~((1<<0) | (1<<1));

  DDRD |= (1<<7);
  PORTD &= ~(1<<7);
}

static void select_col(uint8_t col) {
  switch (col) {
    case 0:
      PORTC |= (1<<6);
      break;
    case 1:
      PORTC |= (1<<6);
      PORTF |= (1<<0);
      break;
    case 2:
      PORTC |= (1<<6);
      PORTF |= (1<<1);
      break;
    case 3:
      PORTC |= (1<<6);
      PORTF |= (1<<0) | (1<<1);
      break;
    case 4:
      PORTC |= (1<<6);
      PORTC |= (1<<7);
      break;
    case 5:
      PORTC |= (1<<6);
      PORTF |= (1<<0);
      PORTC |= (1<<7);
      break;
    case 6:
      PORTC |= (1<<6);
      PORTF |= (1<<1);
      PORTC |= (1<<7);
      break;
    case 7:
      PORTC |= (1<<6);
      PORTF |= (1<<0) | (1<<1);
      PORTC |= (1<<7);
      break;
    case 8:
      PORTB |= (1<<6);
      break;
    case 9:
      PORTB |= (1<<6);
      PORTF |= (1<<0);
      break;
    case 10:
      PORTB |= (1<<6);
      PORTF |= (1<<1);
      break;
    case 11:
      PORTB |= (1<<6);
      PORTF |= (1<<0) | (1<<1);
      break;
    case 12:
      PORTB |= (1<<6);
      PORTC |= (1<<7);
      break;
    case 13:
      PORTB |= (1<<6);
      PORTF |= (1<<0);
      PORTC |= (1<<7);
      break;
    case 14:
      PORTB |= (1<<6);
      PORTF |= (1<<1);
      PORTC |= (1<<7);
      break;
    case 15:
      PORTB |= (1<<6);
      PORTF |= (1<<0) | (1<<1);
      PORTC |= (1<<7);
      break;
    case 16:
      PORTB |= (1<<5);
      break;
    case 17:
      PORTB |= (1<<4);
      break;
    case 18:
      PORTD |= (1<<7);
      break;
  }
}
Commit	Line	Data
41d5d3e6 RS	1	/*
	2	Copyright 2016-2017 Ralf Schmitt <ralf@bunkertor.net> Rasmus Schults <rasmusx@gmail.com>
	3	This program is free software: you can redistribute it and/or modify
	4	it under the terms of the GNU General Public License as published by
	5	the Free Software Foundation, either version 2 of the License, or
	6	(at your option) any later version.
	7
	8	This program is distributed in the hope that it will be useful,
	9	but WITHOUT ANY WARRANTY; without even the implied warranty of
	10	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	11	GNU General Public License for more details.
	12
	13	You should have received a copy of the GNU General Public License
	14	along with this program. If not, see <http://www.gnu.org/licenses/>.
	15	*/
	16
	17	#include <util/delay.h>
	18	#include <avr/io.h>
	19	#include <stdio.h>
	20	#include "matrix.h"
	21	#include "util.h"
	22	#include "print.h"
	23	#include "debug.h"
	24
	25	static uint8_t debouncing = DEBOUNCING_DELAY;
	26
	27	/* matrix state(1:on, 0:off) */
	28	static matrix_row_t matrix[MATRIX_ROWS];
	29	static matrix_row_t matrix_debouncing[MATRIX_ROWS];
	30
	31	static uint8_t read_rows(void);
	32	static uint8_t read_fwkey(void);
	33	static void init_rows(void);
	34	static void unselect_cols(void);
	35	static void select_col(uint8_t col);
	36
41d5d3e6 RS	37
	38	__attribute__ ((weak))
	39	void matrix_init_kb(void) {
	40	matrix_init_user();
	41	}
	42
	43	__attribute__ ((weak))
	44	void matrix_scan_kb(void) {
	45	matrix_scan_user();
	46	}
	47
	48	__attribute__ ((weak))
	49	void matrix_init_user(void) {
	50	}
	51
	52	__attribute__ ((weak))
	53	void matrix_scan_user(void) {
	54	}
	55
	56	void matrix_init(void) {
	57	DDRD \|= 0b11010000;
	58	PORTD &= ~0b01010000;
	59	DDRB \|= 0b00011111;
	60	PORTB &= ~0b00001110;
	61	PORTB \|= 0b00010001;
	62	DDRE \|= 0b01000000;
	63	PORTE &= ~0b01000000;
	64
	65	unselect_cols();
	66	init_rows();
	67
	68	for (uint8_t i=0; i < MATRIX_ROWS; i++) {
	69	matrix[i] = 0;
	70	matrix_debouncing[i] = 0;
	71	}
	72
	73	matrix_init_quantum();
	74	}
	75
	76	uint8_t matrix_scan(void) {
	77	for (uint8_t col = 0; col < MATRIX_COLS; col++) {
	78	select_col(col);
	79	_delay_us(3);
	80
	81	uint8_t rows = read_rows();
	82	if(col == 0) {
	83	rows \|= read_fwkey();
	84	}
	85	for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
	86	bool prev_bit = matrix_debouncing[row] & ((matrix_row_t)1<<col);
	87	bool curr_bit = rows & (1<<row);
	88	if (prev_bit != curr_bit) {
	89	matrix_debouncing[row] ^= ((matrix_row_t)1<<col);
cb2f2fd2 M	90	if (debouncing) {
	91	dprint("bounce!: "); dprintf("%02X", debouncing); dprintln();
	92	}
41d5d3e6 RS	93	debouncing = DEBOUNCING_DELAY;
	94	}
	95	}
	96	unselect_cols();
	97	}
	98
	99	if (debouncing) {
	100	if (--debouncing) {
	101	_delay_ms(1);
	102	} else {
	103	for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
	104	matrix[i] = matrix_debouncing[i];
	105	}
	106	}
	107	}
	108
	109	matrix_scan_quantum();
	110	return 1;
	111	}
	112
	113	inline matrix_row_t matrix_get_row(uint8_t row) {
	114	return matrix[row];
	115	}
	116
	117	void matrix_print(void) {
	118	print("\nr/c 0123456789ABCDEF\n");
	119	for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
	120	xprintf("%02X: %032lb\n", row, bitrev32(matrix_get_row(row)));
	121	}
	122	}
	123
	124	/* Row pin configuration
	125	* row: 0 1 2 3 4 5
	126	* pin: PB7 PD0 PD1 PD2 PD3 PD5
	127	*
	128	* Esc uses its own pin PE2
	129	*/
	130	static void init_rows(void) {
	131	DDRB &= ~0b10000000;
	132	PORTB &= ~0b10000000;
	133
	134	DDRD &= ~0b00101111;
	135	PORTD &= ~0b00101111;
	136
	137	DDRE &= ~0b00000100;
	138	PORTE \|= 0b00000100;
	139	}
	140
	141	static uint8_t read_rows() {
	142	return (PINB&(1<<7) ? (1<<0) : 0) \|
	143	(PIND&(1<<0) ? (1<<1) : 0) \|
	144	(PIND&(1<<1) ? (1<<2) : 0) \|
	145	(PIND&(1<<2) ? (1<<3) : 0) \|
	146	(PIND&(1<<3) ? (1<<4) : 0) \|
	147	(PIND&(1<<5) ? (1<<5) : 0);
	148	}
	149
	150	static uint8_t read_fwkey(void)
	151	{
	152	return PINE&(1<<2) ? 0 : (1<<0);
	153	}
	154
	155	/* Columns 0 - 15
	156	* These columns uses two 74HC237D 3 to 8 bit demultiplexers.
157	* col / pin: PC6 PB6 PF0 PF1 PC7
158	* 0: 1 0 0 0 0
159	* 1: 1 0 1 0 0
160	* 2: 1 0 0 1 0
161	* 3: 1 0 1 1 0
162	* 4: 1 0 0 0 1
163	* 5: 1 0 1 0 1
164	* 6: 1 0 0 1 1
165	* 7: 1 0 1 1 1
166	* 8: 0 1 0 0 0
167	* 9: 0 1 1 0 0
168	* 10: 0 1 0 1 0
169	* 11: 0 1 1 1 0
170	* 12: 0 1 0 0 1
171	* 13: 0 1 1 0 1
172	* 14: 0 1 0 1 1
173	* 15: 0 1 1 1 1
174	*
175	* col: 16
176	* pin: PB5
177	*
178	* col: 17
179	* pin: PB4
180	*
181	* col: 18
182	* pin: PD7
183	*/
184	static void unselect_cols(void) {
185	DDRB \|= 0b01110000;
186	PORTB &= ~0b01110000;
187
188	DDRC \|= (1<<6) \| (1<<7);
189	PORTC &= ~((1<<6) \| (1<<7));
190
191	DDRF \|= (1<<0) \| (1<<1);
192	PORTF &= ~((1<<0) \| (1<<1));
193
194	DDRD \|= (1<<7);
195	PORTD &= ~(1<<7);
196	}
197
198	static void select_col(uint8_t col) {
199	switch (col) {
200	case 0:
201	PORTC \|= (1<<6);
202	break;
203	case 1:
204	PORTC \|= (1<<6);
205	PORTF \|= (1<<0);
206	break;
207	case 2:
208	PORTC \|= (1<<6);
209	PORTF \|= (1<<1);
210	break;
211	case 3:
212	PORTC \|= (1<<6);
213	PORTF \|= (1<<0) \| (1<<1);
214	break;
215	case 4:
216	PORTC \|= (1<<6);
217	PORTC \|= (1<<7);
218	break;
219	case 5:
220	PORTC \|= (1<<6);
221	PORTF \|= (1<<0);
222	PORTC \|= (1<<7);
223	break;
224	case 6:
225	PORTC \|= (1<<6);
226	PORTF \|= (1<<1);
227	PORTC \|= (1<<7);
228	break;
229	case 7:
230	PORTC \|= (1<<6);
231	PORTF \|= (1<<0) \| (1<<1);
232	PORTC \|= (1<<7);
233	break;
234	case 8:
235	PORTB \|= (1<<6);
236	break;
237	case 9:
238	PORTB \|= (1<<6);
239	PORTF \|= (1<<0);
240	break;
241	case 10:
242	PORTB \|= (1<<6);
243	PORTF \|= (1<<1);
244	break;
245	case 11:
246	PORTB \|= (1<<6);
247	PORTF \|= (1<<0) \| (1<<1);
248	break;
249	case 12:
250	PORTB \|= (1<<6);
251	PORTC \|= (1<<7);
252	break;
253	case 13:
254	PORTB \|= (1<<6);
255	PORTF \|= (1<<0);
256	PORTC \|= (1<<7);
257	break;
258	case 14:
259	PORTB \|= (1<<6);
260	PORTF \|= (1<<1);
261	PORTC \|= (1<<7);
262	break;
263	case 15:
264	PORTB \|= (1<<6);
265	PORTF \|= (1<<0) \| (1<<1);
266	PORTC \|= (1<<7);
267	break;
268	case 16:
269	PORTB \|= (1<<5);
270	break;
271	case 17:
272	PORTB \|= (1<<4);
273	break;
274	case 18:
275	PORTD \|= (1<<7);
276	break;
277	}
278	}