137 rindas
3.1 KiB
C
137 rindas
3.1 KiB
C
/*
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Copyright 2012 Jun Wako <wakojun@gmail.com>
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdint.h>
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#include <stdbool.h>
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#include <avr/io.h>
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#include <util/delay.h>
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#include "print.h"
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#include "util.h"
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#include "matrix.h"
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#include "debug.h"
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#include "protocol/serial.h"
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#include "led.h"
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#include "host.h"
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/*
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* Matrix Array usage:
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*
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* ROW: 16(4bits)
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* COL: 8(3bits)
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*
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* 8bit wide
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* +---------+
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* 0|00 ... 07|
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* 1|08 ... 0F|
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* :| ... |
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* :| ... |
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* E|70 ... 77|
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* F|78 ... 7F|
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* +---------+
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*/
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static uint8_t matrix[MATRIX_ROWS];
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#define ROW(code) ((code>>3)&0xF)
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#define COL(code) (code&0x07)
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void matrix_init(void)
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{
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DDRD |= (1<<6);
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PORTD |= (1<<6);
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//debug_enable = true;
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serial_init();
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// initialize matrix state: all keys off
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for (uint8_t i=0; i < MATRIX_ROWS; i++) matrix[i] = 0x00;
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// wait for keyboard coming up
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// otherwise LED status update fails
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print("Reseting ");
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while (1) {
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print(".");
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while (serial_recv());
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serial_send(0x01);
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_delay_ms(500);
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if (serial_recv() == 0xFF) {
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_delay_ms(500);
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if (serial_recv() == 0x04)
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break;
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}
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}
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print(" Done\n");
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PORTD &= ~(1<<6);
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return;
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}
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uint8_t matrix_scan(void)
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{
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uint8_t code;
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code = serial_recv();
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if (!code) return 0;
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debug_hex(code); debug(" ");
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switch (code) {
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case 0xFF: // reset success: FF 04
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print("reset: ");
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_delay_ms(500);
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code = serial_recv();
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xprintf("%02X\n", code);
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if (code == 0x04) {
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// LED status
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led_set(host_keyboard_leds());
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}
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return 0;
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case 0xFE: // layout: FE <layout>
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print("layout: ");
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_delay_ms(500);
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xprintf("%02X\n", serial_recv());
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return 0;
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case 0x7E: // reset fail: 7E 01
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print("reset fail: ");
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_delay_ms(500);
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xprintf("%02X\n", serial_recv());
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return 0;
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case 0x7F:
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// all keys up
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for (uint8_t i=0; i < MATRIX_ROWS; i++) matrix[i] = 0x00;
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return 0;
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}
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if (code&0x80) {
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// break code
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if (matrix_is_on(ROW(code), COL(code))) {
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matrix[ROW(code)] &= ~(1<<COL(code));
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}
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} else {
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// make code
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if (!matrix_is_on(ROW(code), COL(code))) {
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matrix[ROW(code)] |= (1<<COL(code));
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}
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}
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return code;
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}
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inline
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uint8_t matrix_get_row(uint8_t row)
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{
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return matrix[row];
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}
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