gbasys
view src/input.c @ 7:72c6429ae953
changed all the copyright headers and added a README
| author | John Tsiombikas <nuclear@member.fsf.org> |
|---|---|
| date | Fri, 18 Apr 2014 02:04:46 +0300 |
| parents | 06726f0b8cd3 |
| children | 85f219fcdc82 |
line source
1 /*
2 gbasys - a gameboy advance hardware abstraction library
3 Copyright (C) 2004-2014 John Tsiombikas <nuclear@member.fsf.org>
5 This program is free software: you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation, either version 3 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>.
17 */
18 #include "input.h"
20 volatile unsigned short *reg_key_state = (unsigned short*)0x4000130;
21 volatile unsigned short *reg_key_cntl = (unsigned short*)0x4000132;
23 int get_key_state(int key) {
24 return ~(*reg_key_state) & key;
25 }
27 void enable_key_interrupts(int keys) {
28 *reg_key_cntl |= (1 << 14) | keys;
29 }
31 void disable_key_interrupts(int keys) {
32 if(keys == KEY_ALL) keys |= (1 << 14);
33 *reg_key_cntl ^= keys;
34 }