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