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/*
Copyright 2014 Ralf Schmitt <ralf@bunkertor.net>
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>
#include <avr/io.h>
#include <util/delay.h>
#include "print.h"
#include "debug.h"
#include "util.h"
#include "matrix.h"
#ifndef CONFIG_SPECIFIC_H
#define CONFIG_SPECIFIC_H
#define CONFIG_LED_IO \
DDRB |= (1<<7); \
DDRC |= (1<<5) | (1<<6);
#define USB_LED_CAPS_LOCK_ON PORTC &= ~(1<<5)
#define USB_LED_CAPS_LOCK_OFF PORTC |= (1<<5)
#define USB_LED_NUM_LOCK_ON PORTB &= ~(1<<7)
#define USB_LED_NUM_LOCK_OFF PORTB |= (1<<7)
#define USB_LED_SCROLL_LOCK_ON PORTC &= ~(1<<6)
#define USB_LED_SCROLL_LOCK_OFF PORTC |= (1<<6)
#define CONFIG_MATRIX_IO \
/* Column output pins */ \
DDRD |= 0b01111011; \
/* Row input pins */ \
DDRC &= ~0b10000000; \
DDRB &= ~0b01111111; \
PORTC |= 0b10000000; \
PORTB |= 0b01111111;
#define MATRIX_ROW_SCAN \
(PINC&(1<<7) ? 0 : ((matrix_row_t)1<<0)) | \
(PINB&(1<<5) ? 0 : ((matrix_row_t)1<<1)) | \
(PINB&(1<<4) ? 0 : ((matrix_row_t)1<<2)) | \
(PINB&(1<<6) ? 0 : ((matrix_row_t)1<<3)) | \
(PINB&(1<<1) ? 0 : ((matrix_row_t)1<<4)) | \
(PINB&(1<<2) ? 0 : ((matrix_row_t)1<<5)) | \
(PINB&(1<<3) ? 0 : ((matrix_row_t)1<<6)) | \
(PINB&(1<<0) ? 0 : ((matrix_row_t)1<<7))
#define MATRIX_ROW_SELECT \
case 0: PORTD = (PORTD & ~0b01111011) | 0b00011011; break; \
case 1: PORTD = (PORTD & ~0b01111011) | 0b01000011; break; \
case 2: PORTD = (PORTD & ~0b01111011) | 0b01101010; break; \
case 3: PORTD = (PORTD & ~0b01111011) | 0b01111001; break; \
case 4: PORTD = (PORTD & ~0b01111011) | 0b01100010; break; \
case 5: PORTD = (PORTD & ~0b01111011) | 0b01110001; break; \
case 6: PORTD = (PORTD & ~0b01111011) | 0b01100001; break; \
case 7: PORTD = (PORTD & ~0b01111011) | 0b01110000; break; \
case 8: PORTD = (PORTD & ~0b01111011) | 0b01100000; break; \
case 9: PORTD = (PORTD & ~0b01111011) | 0b01101000; break; \
case 10: PORTD = (PORTD & ~0b01111011) | 0b00101011; break; \
case 11: PORTD = (PORTD & ~0b01111011) | 0b00110011; break; \
case 12: PORTD = (PORTD & ~0b01111011) | 0b00100011; break; \
case 13: PORTD = (PORTD & ~0b01111011) | 0b01111000; break; \
case 14: PORTD = (PORTD & ~0b01111011) | 0b00010011; break; \
case 15: PORTD = (PORTD & ~0b01111011) | 0b01101001; break; \
case 16: PORTD = (PORTD & ~0b01111011) | 0b00001011; break; \
case 17: PORTD = (PORTD & ~0b01111011) | 0b00111011; break;
#endif
#ifndef DEBOUNCING_DELAY
# define DEBOUNCING_DELAY 0
#endif
static uint8_t debouncing = DEBOUNCING_DELAY;
static matrix_row_t matrix[MATRIX_ROWS];
static matrix_row_t matrix_debouncing[MATRIX_ROWS];
static matrix_row_t scan_row(void);
static void select_row(uint8_t row);
inline uint8_t matrix_rows(void) {
return MATRIX_ROWS;
}
inline uint8_t matrix_cols(void) {
return MATRIX_COLS;
}
void matrix_init(void) {
CONFIG_MATRIX_IO;
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 row = 0; row < MATRIX_ROWS; row++) {
select_row(row);
_delay_us(3);
matrix_row_t row_scan = scan_row();
for (uint8_t col = 0; col < MATRIX_COLS; col++) {
bool prev_bit = matrix_debouncing[row] & ((matrix_row_t)1<<col);
bool curr_bit = row_scan & (1<<col);
if (prev_bit != curr_bit) {
matrix_debouncing[row] ^= ((matrix_row_t)1<<col);
debouncing = DEBOUNCING_DELAY;
}
}
}
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;
}
bool matrix_is_modified(void) {
if (debouncing)
return false;
else
return true;
}
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];
}
static const char ROW_NAMES[] = "ABCDEFGHIJKLMNOPQR";
void matrix_print(void) {
print("\nr/c 01234567\n");
for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
matrix_row_t row_scan = matrix_get_row(row);
xprintf("%c: ", ROW_NAMES[row]);
for (uint8_t col = 0; col < MATRIX_COLS; col++) {
bool curr_bit = row_scan & (1<<col);
xprintf("%c", curr_bit ? '*' : '.');
}
print("\n");
}
}
uint8_t matrix_key_count(void) {
uint8_t count = 0;
for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
count += bitpop32(matrix[i]);
}
return count;
}
static matrix_row_t scan_row(void) {
return MATRIX_ROW_SCAN;
}
static void select_row(uint8_t row) {
switch (row) {
MATRIX_ROW_SELECT;
}
}
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