160 lines
3.2 KiB
C
160 lines
3.2 KiB
C
/*
|
|
Copyright 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/>.
|
|
*/
|
|
|
|
#include <stdint.h>
|
|
#include <stdbool.h>
|
|
#include <avr/io.h>
|
|
#include <util/delay.h>
|
|
#include "print.h"
|
|
#include "util.h"
|
|
#include "matrix.h"
|
|
#include "debug.h"
|
|
#include "protocol/serial.h"
|
|
|
|
|
|
/*
|
|
* Matrix Array usage:
|
|
*
|
|
* ROW: 16(4bits)
|
|
* COL: 8(3bits)
|
|
*
|
|
* 8bit wide
|
|
* +---------+
|
|
* 0|00 ... 07|
|
|
* 1|08 ... 0F|
|
|
* :| ... |
|
|
* :| ... |
|
|
* E|70 ... 77|
|
|
* F|78 ... 7F|
|
|
* +---------+
|
|
*/
|
|
static uint8_t matrix[MATRIX_ROWS];
|
|
#define ROW(code) ((code>>3)&0xF)
|
|
#define COL(code) (code&0x07)
|
|
|
|
static bool is_modified = false;
|
|
|
|
|
|
inline
|
|
uint8_t matrix_rows(void)
|
|
{
|
|
return MATRIX_ROWS;
|
|
}
|
|
|
|
inline
|
|
uint8_t matrix_cols(void)
|
|
{
|
|
return MATRIX_COLS;
|
|
}
|
|
|
|
void matrix_init(void)
|
|
{
|
|
DDRD |= (1<<6);
|
|
PORTD |= (1<<6);
|
|
debug_enable = true;
|
|
|
|
serial_init();
|
|
|
|
// initialize matrix state: all keys off
|
|
for (uint8_t i=0; i < MATRIX_ROWS; i++) matrix[i] = 0x00;
|
|
|
|
return;
|
|
}
|
|
|
|
uint8_t matrix_scan(void)
|
|
{
|
|
is_modified = false;
|
|
|
|
uint8_t code;
|
|
code = serial_recv();
|
|
if (!code) return 0;
|
|
|
|
debug_hex(code); debug(" ");
|
|
|
|
switch (code) {
|
|
case 0x7E: // reset fail
|
|
case 0xFE: // layout
|
|
case 0xFF: // reset success
|
|
_delay_ms(500);
|
|
// ignore response byte
|
|
debug("(response ignored:");
|
|
while ((code = serial_recv())) { debug(" "); debug_hex(code); }
|
|
debug(") ");
|
|
// FALL THROUGH
|
|
case 0x7F:
|
|
// all keys up
|
|
for (uint8_t i=0; i < MATRIX_ROWS; i++) matrix[i] = 0x00;
|
|
return 0;
|
|
}
|
|
|
|
if (code&0x80) {
|
|
// break code
|
|
if (matrix_is_on(ROW(code), COL(code))) {
|
|
matrix[ROW(code)] &= ~(1<<COL(code));
|
|
is_modified = true;
|
|
}
|
|
} else {
|
|
// make code
|
|
if (!matrix_is_on(ROW(code), COL(code))) {
|
|
matrix[ROW(code)] |= (1<<COL(code));
|
|
is_modified = true;
|
|
}
|
|
}
|
|
return code;
|
|
}
|
|
|
|
bool matrix_is_modified(void)
|
|
{
|
|
return is_modified;
|
|
}
|
|
|
|
inline
|
|
bool matrix_has_ghost(void)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
inline
|
|
bool matrix_is_on(uint8_t row, uint8_t col)
|
|
{
|
|
return (matrix[row] & (1<<col));
|
|
}
|
|
|
|
inline
|
|
uint8_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++) {
|
|
phex(row); print(": ");
|
|
pbin_reverse(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++) {
|
|
count += bitpop(matrix[i]);
|
|
}
|
|
return count;
|
|
}
|