Files
gt3b/buzzer.h
2011-05-17 11:25:26 +02:00

53 lines
1.3 KiB
C

/*
buzzer include file
Copyright (C) 2011 Pavel Semerad
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 3 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/>.
*/
#ifndef _BUZZER_INCLUDED
#define _BUZZER_INCLUDED
#include "gt3b.h"
// setting on/off
#define BUZZER0 BRES(PD_ODR, 4)
#define BUZZER1 BSET(PD_ODR, 4)
#define BUZZER_CHK BCHK(PD_ODR, 4)
// functions to use
#define BUZZER_MAX (u16)(0xffff)
extern void buzzer_on(u8 on_5ms, u8 off_5ms, u16 count);
extern void buzzer_off(void);
extern void beep(u8 len_5ms);
extern void key_beep(void);
// variables used at timer
extern _Bool buzzer_running;
extern u8 buzzer_cnt_on;
extern u8 buzzer_cnt_off;
extern u16 buzzer_count;
extern u8 buzzer_cnt;
#endif