/*********************************************************************************
 *      Copyright:  (C) 2018 LingYun IoT System Studio
 *                  All rights reserved.
 *
 *       Filename:  beep.h
 *    Description:  This file is used to control Passive buzzer or Active buzzer
 *
 *     pi@raspberrypi:~ $ gpio readall show BCM and wPi pinmap  
 *
 *                VCC ---- 5V/3.3V
 *                GND ---- GND
 *                I/O ---- GPIO.18  ---- GPIO.1 
 *                         BCM           wPi
 *                 
 *        Version:  1.0.0(2018/10/14)
 *         Author:  Guo Wenxue <guowenxue@gmail.com>
 *      ChangeLog:  1, Release initial version on "2018/10/14 12:13:26"
 *                 
 ********************************************************************************/

#ifndef __BEEP_H
#define __BEEP_H

#define OFF           0
#define ON            1

//#define CONFIG_ACTV_BEEP

#define BEEP_FREQ     2400

/* Use Pin12 == GPIO18(BCM) == GPIO.1(wPi) */
#define PWM_PIN       1

int turn_passive_beep(int cmd, int freq);

int turn_active_beep(int cmd);

/*  Only passive buzzer can play tone */
#ifndef CONFIG_ACTV_BEEP 
void play_little_star(void);
#endif

#endif