H Mizuno
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
Diff: PwmBeep.cpp
- Revision:
- 0:c6220b0517a5
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/PwmBeep.cpp Fri May 22 08:33:18 2020 +0000
@@ -0,0 +1,58 @@
+#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);
+ }
+ }