H Mizuno / PwmBeep

PWMポートを使ってビープを鳴らすライブラリです。周波数指定、単純なON/OFF、ワンショット、指定回数の繰り返しに対応しています。(It is a library that sounds a beep using the PWM port. It supports frequency specification, simple ON / OFF, one shot, and specified number of repetitions.)

Dependents:   PwmBeep_hello DLC_STARTER

PwmBeep.cpp

Committer:
hmizuno
Date:
2020-05-22
Revision:
0:c6220b0517a5

File content as of revision 0:c6220b0517a5:

#include "PwmBeep.h"
#include "mbed.h"

//public function

    PwmBeep::PwmBeep(PinName pin,int initialfreq) : _pwmbeep(pin) {
        setFreq(initialfreq);
        _pwmbeep = 0.0;
    }
    
    void PwmBeep::turnOff(){
        _pwmbeep = 0.0;
    }
 
    void PwmBeep::turnOn(){
        _pwmbeep = 0.5;
    }
    
    void PwmBeep::oneshotOn(float time){
        turnOn();
        timeout.attach(callback(this, &PwmBeep::turnOff), time);
    }
    
    void PwmBeep::NshotOn(int num,float ontime,float offtime){
        counter = 0;
        repeat_count = num;
        repeat_ontime = ontime;
        repeat_offtime = offtime;
        turnOn_and_setOffTimer();
    }
    
    void PwmBeep::NshotOnwithWait(int num,float ontime,float offtime){
        for(int i = 0; i < num; i++){
            turnOn();
            wait(ontime);
            turnOff();
            wait(offtime);
        }
    }

    void PwmBeep::setFreq(int freq){
         _pwmbeep.period((float)1.00/freq);  //ms
    }
    
 //private function
   
    void PwmBeep::turnOn_and_setOffTimer(){
        turnOn();
        timeout.attach(callback(this, &PwmBeep::turnOff_and_setOnTimer), repeat_ontime);
        counter++;
    }
    
    void PwmBeep::turnOff_and_setOnTimer(){
        turnOff();
        if(counter < repeat_count){
            timeout.attach(callback(this, &PwmBeep::turnOn_and_setOffTimer), repeat_offtime);
        }
    }