/* 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 "serial.h" #include "matrix.h" #include "debug.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) { 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; uint16_t code; code = serial_recv2(); if (code == -1) { return 0; } dprintf("%02X\n", code); 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; }