Mathias Rasmussen / SoundSensor

Grove soundsensor lib

soundsensor.cpp@5:944179f9d11f, 2019-01-18 (annotated)

Committer:
math991e
Date:
Fri Jan 18 10:35:02 2019 +0000
Revision:
5:944179f9d11f
Parent:
4:89a9c205446c
Child:
6:fb51a4b71646
Initialize array

Who changed what in which revision?

UserRevisionLine numberNew contents of line
math991e 0:18d442efc99a 1 #include "soundsensor.h"
math991e 0:18d442efc99a 2
math991e 0:18d442efc99a 3 soundsensor::soundsensor(PinName pin){
math991e 1:29daa2bdd0c6 4 soundsensor::setPin(pin);
math991e 0:18d442efc99a 5 }
math991e 0:18d442efc99a 6
math991e 0:18d442efc99a 7 void soundsensor::setPin(PinName pin){
math991e 0:18d442efc99a 8 this->_pin=pin;
math991e 0:18d442efc99a 9 }
math991e 0:18d442efc99a 10
math991e 0:18d442efc99a 11 PinName soundsensor::getPin(){
math991e 0:18d442efc99a 12 return this->_pin;
math991e 0:18d442efc99a 13 }
math991e 0:18d442efc99a 14
math991e 0:18d442efc99a 15 float soundsensor::convertToDb(float value){
math991e 3:372e67c123c3 16 //return 16.801 * log (value/65535) + 9.872;
math991e 3:372e67c123c3 17 return 1000000*20*(log(value)/log(10)))/1000000;
math991e 0:18d442efc99a 18 }
math991e 0:18d442efc99a 19
math991e 0:18d442efc99a 20 float soundsensor::revertFromDb(float value){
math991e 0:18d442efc99a 21 /**
math991e 0:18d442efc99a 22 *CODE NEEDS TO BE IMPLEMENTED
math991e 0:18d442efc99a 23 **/
math991e 1:29daa2bdd0c6 24 return 0;
math991e 0:18d442efc99a 25 }
math991e 0:18d442efc99a 26
math991e 0:18d442efc99a 27 float soundsensor::listen(bool toDb){
math991e 1:29daa2bdd0c6 28 AnalogIn sensor(this->getPin());
math991e 5:944179f9d11f 29 int values[];
math991e 3:372e67c123c3 30
math991e 3:372e67c123c3 31 for(int i=0;i<100;i++){
math991e 4:89a9c205446c 32 values[i] = sensor.read_u16();
math991e 3:372e67c123c3 33 wait(0.0001);
math991e 3:372e67c123c3 34 }
math991e 3:372e67c123c3 35
math991e 3:372e67c123c3 36 for(int j=0;j<100;j++){
math991e 3:372e67c123c3 37 sum += values[j];
math991e 3:372e67c123c3 38 }
math991e 3:372e67c123c3 39 average = sum/100;
math991e 3:372e67c123c3 40
math991e 0:18d442efc99a 41 if(toDb){
math991e 3:372e67c123c3 42 return this->convertToDb(average);
math991e 0:18d442efc99a 43 }else{
math991e 3:372e67c123c3 44 return average;
math991e 0:18d442efc99a 45 }
math991e 0:18d442efc99a 46 }