ziad eldebri / Mbed 2 deprecated pir_sensor

Expo2017_example

Dependencies:   mbed

main.cpp

Committer:
ziadeldebri
Date:
2017-05-14
Revision:
0:493a823a2708

File content as of revision 0:493a823a2708:

#include "mbed.h"
 
DigitalOut led1(LED2);
DigitalIn alarm(PTB0, PullNone); //internal pull up 
PwmOut buzzer(PTE31);


float freq[] = {659,554,659,554,440,494,554,587,494,659,554,400};
float beat[] = {1,1,1,1,1,0.5,0.5,1,1,1,1,2};

int main() {  
    wait(2); //Wait for sensor to take snap shot of still room
    
    while(1) {
        if (alarm){
            led1=0;
            for(int i = 0 ; i <= 4; i++){
            buzzer.period(1/(2*freq[i]));
            buzzer = 0.5;
            wait(0.4*beat[i]);
            } 
        }
        else {
            led1=1;
            buzzer = 0;
             }
             wait(1);
    }

}