could somebody help me with the code

hello,

this first arduino code. parts wrote, others copied parts of posted online.  

i trying add command inside void loop() , have suspicion sequence of commands not right , can't figure out how should done.

there 3 pir sensors installed in room. when either 1 of them detects presence of person, playback of 2 soundtracks start. 1 soundtrack on cd player, on rmp3 shield.

the soundtracks 1 hr long thought add physical button send 'stop' rmp3.stop(); command shield have playback reset option , don't understand if code resetbutton wrong or whether put in wrong order.

could please`look @ code tell me what's wrong. appreciate it.

i hope explanations clear, code below.

thank much.
m.

code: [select]

#include <newsoftserial.h>

#include <roguesd.h>

#include <roguemp3.h>


//sketch start payback of soundtracks on cd player , mp3 shield
//when 1 of 3 pir's reads high


//may 1, 2010
//mikhail iliatov
//parts copied code mgehring , tj on arduino.cc


#define cd 10
#define pir1 2
#define pir2 3
#define pir3 4
#define resetbutton 8

newsoftserial rmp3_serial(6, 7);
roguemp3 rmp3(rmp3_serial);

int duration=20;
//temporary number, changed actual length of soundtrack
//(prob. 3923586 + time start cd (10 sec.) => 3933586 milisec or 3933.586 s ~= 3934 s)

void setup(){

 serial.begin(9600);
 rmp3_serial.begin(9600);


 pinmode(cd, output);

 pinmode(pir1, input);
 pinmode(pir2, input);
 pinmode(pir3, input);

 pinmode(resetbutton, input);
 //this resetbutton trying incoprporate
 //so can stop mp3 in middle of playback if necessary

 digitalwrite(pir1, low);
 digitalwrite(pir2, low);
 digitalwrite(pir3, low);

 digitalwrite(resetbutton, low); //check this

 rmp3.sync();
 //don't know function in rmp3 library sample code

 int calibrationtime = 30; //do need use calibration, check parallax

 // int song="/nhd050708.mp3"; how define songname?

 //calibrate sensor
 serial.print("calibrating sensor ");
 for(int = 0; < calibrationtime; i++){
   serial.print(".");
   delay(1000);
 }
 serial.println(" done");
 serial.println("sensor active");
 delay(50);
 //insert stop command cd here?

}


void loop(){

 //this code doesn't work , have no idea why or paste it!
 if (digitalread(resetbutton) == high){
   digitalwrite(13, high); //to turn led on know reset button works
   rmp3.stop(); //to stop rmp3
 }


 if ((digitalread (pir1) == low) || (digitalread (pir2) == low) || (digitalread (pir3) == low)){
   digitalwrite (cd, low);
   //insert stop command cd here make sure nothing triggered while calibrating sensors
 }
 else {
   digitalwrite (cd, high);
   delay(500);

   digitalwrite (cd, low);

   delay(5000); //time cd player start

   rmp3.playfile("/tinfou2_final.mp3");

   serial.println("now playing"); //figure how print status mp3?

   delay_secs(duration);      
   // pause program while soundtrack playing duration == length of sountrack

   serial.println("stopped");
 }
}

void delay_secs( int secs )        // delays 'secs' seconds
{
 int i;
 for(i=0; i<secs; i++)
   delay(1000);
}


/*think adding button stop playback on both cd , mp3 @ time
*/


i suggest implementing application "finite state machine".

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