/* 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); inline uint8_t matrix_rows(void) { return MATRIX_ROWS; } inline uint8_t matrix_cols(void) { return MATRIX_COLS; } 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; 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; } 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; } inline static void register_key(uint8_t key) { if (key&0x80) { matrix[ROW(key)] &= ~(1<<COL(key)); } else { matrix[ROW(key)] |= (1<<COL(key)); } }