gbasys
annotate 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 |
| rev | line source |
|---|---|
| nuclear@0 | 1 /* |
| nuclear@7 | 2 gbasys - a gameboy advance hardware abstraction library |
| nuclear@7 | 3 Copyright (C) 2004-2014 John Tsiombikas <nuclear@member.fsf.org> |
| nuclear@0 | 4 |
| nuclear@7 | 5 This program is free software: you can redistribute it and/or modify |
| nuclear@0 | 6 it under the terms of the GNU General Public License as published by |
| nuclear@7 | 7 the Free Software Foundation, either version 3 of the License, or |
| nuclear@0 | 8 (at your option) any later version. |
| nuclear@0 | 9 |
| nuclear@0 | 10 This program is distributed in the hope that it will be useful, |
| nuclear@0 | 11 but WITHOUT ANY WARRANTY; without even the implied warranty of |
| nuclear@0 | 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| nuclear@0 | 13 GNU General Public License for more details. |
| nuclear@0 | 14 |
| nuclear@0 | 15 You should have received a copy of the GNU General Public License |
| nuclear@7 | 16 along with this program. If not, see <http://www.gnu.org/licenses/>. |
| nuclear@0 | 17 */ |
| nuclear@0 | 18 #include "input.h" |
| nuclear@0 | 19 |
| nuclear@0 | 20 volatile unsigned short *reg_key_state = (unsigned short*)0x4000130; |
| nuclear@0 | 21 volatile unsigned short *reg_key_cntl = (unsigned short*)0x4000132; |
| nuclear@0 | 22 |
| nuclear@0 | 23 int get_key_state(int key) { |
| nuclear@0 | 24 return ~(*reg_key_state) & key; |
| nuclear@0 | 25 } |
| nuclear@0 | 26 |
| nuclear@0 | 27 void enable_key_interrupts(int keys) { |
| nuclear@0 | 28 *reg_key_cntl |= (1 << 14) | keys; |
| nuclear@0 | 29 } |
| nuclear@0 | 30 |
| nuclear@0 | 31 void disable_key_interrupts(int keys) { |
| nuclear@0 | 32 if(keys == KEY_ALL) keys |= (1 << 14); |
| nuclear@0 | 33 *reg_key_cntl ^= keys; |
| nuclear@0 | 34 } |