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tmk_keyboard/converter/m0110_usb/matrix.c

101 строка
2.1 KiB
C

/*
Copyright 2011,2012 Jun Wako <wakojun@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/>.
*/
/*
* scan matrix
*/
#include <stdint.h>
#include <stdbool.h>
#include <avr/io.h>
#include <util/delay.h>
#include "print.h"
#include "util.h"
#include "debug.h"
#include "host.h"
#include "led.h"
#include "m0110.h"
#include "matrix.h"
#define CAPS 0x39
#define CAPS_BREAK (CAPS | 0x80)
#define ROW(key) ((key)>>3&0x0F)
#define COL(key) ((key)&0x07)
static bool is_modified = false;
// matrix state buffer(1:on, 0:off)
static uint8_t *matrix;
static uint8_t _matrix0[MATRIX_ROWS];
static void register_key(uint8_t key);
void matrix_init(void)
{
m0110_init();
// initialize matrix state: all keys off
for (uint8_t i=0; i < MATRIX_ROWS; i++) _matrix0[i] = 0x00;
matrix = _matrix0;
// LED flash
DDRD |= (1<<6); PORTD |= (1<<6);
_delay_ms(500);
DDRD |= (1<<6); PORTD &= ~(1<<6);
return;
}
uint8_t matrix_scan(void)
{
uint8_t key;
is_modified = false;
key = m0110_recv_key();
if (key == M0110_NULL) {
return 0;
} else if (key == M0110_ERROR) {
return 0;
} else {
is_modified = true;
register_key(key);
}
if (debug_enable) {
print("["); phex(key); print("]\n");
}
return 1;
}
inline
uint8_t matrix_get_row(uint8_t row)
{
return matrix[row];
}
inline
static void register_key(uint8_t key)
{
if (key&0x80) {
matrix[ROW(key)] &= ~(1<<COL(key));
} else {
matrix[ROW(key)] |= (1<<COL(key));
}
}