Need help adding code to sample code

here original code
(it dtmf example)

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created 2-12-2013 igor ramos
 



*/

code: [select]

#include <tone.h>

tone freq1;
tone freq2;

const int dtmf_freq1[] = { 1336, 1209, 1336, 1477, 1209, 1336, 1477, 1209, 1336, 1477 };
const int dtmf_freq2[] = {  941,  697,  697,  697,  770,  770,  770,  852,  852,  852 };

int dr = 12; //dr goes high when data ready
int d0 = 11;
int d1 = 10;
int d2 = 9;
int d3 = 8;
int a1 = 6;
int a2 = 7;


char data_ready=0, data[4] = {0,0,0,0};
char data_ready_status=0;
char dr_serviced=0;
char tx_in_progress=0;


void setup() {      

    serial.begin(9600);
   
    serial.println("dossant dtmf module: loopback example");  
    keyboard.begin();
   
 // initialize digital pin output.
   pinmode(d0, input);    
   pinmode(d1, input);
   pinmode(d2, input);
   pinmode(d3, input);
   pinmode(dr, input);
   
   freq1.begin(a1);
   freq2.begin(a2);
   
}



// loop routine runs on , on again forever:
void loop() {
static unsigned long int time, task, tx_time;
char tmp;

   time = millis();
   
   data_ready_status = digitalread(dr);
         
   if (time - task > 1000) // send random char every 500ms
   {
      task = time;
     
      if (tx_in_progress)
        serial.println("rx timeout");  
       
       char randnumber = random(9);
       serial.print("\n\rtransmitting dtmf: ");
       serial.println(randnumber,dec);

       playdtmf(randnumber, 500);
       tx_in_progress =1;
   }

   if (data_ready_status)
   {
     if (!dr_serviced)
     {
       //read data pins
       data[0] = digitalread(d0);
       data[1] = digitalread(d1);
       data[2] = digitalread(d2);
       data[3] = digitalread(d3);
 
       tmp = dtmf_digit(); //assemble dtmf digit;
 
       
       serial.print("dtmf digit received: ");
       serial.println(tmp,dec);
     
       
       
       dr_serviced =1; //clear received flag
       tx_in_progress =0;    //clear  tx in progress flag
     }

   }
   else
     dr_serviced =0;
         
 
}


 
// ----dtmf receive functions ----
char dtmf_digit ( void  )  //assemble bits digit
{
 char dtmf_digit;

// dtmf digit decoded per page 5 table 1 of chip datasheet
// http://www.zarlink.com/zarlink/mt8870d-datasheet-oct2006.pdf

 dtmf_digit = 8* data[3] +  4* data[2] + 2* data[1] + data[0] ;
 
 if (dtmf_digit==10)
   dtmf_digit =0;
   
 return dtmf_digit;
}

// ----dtmf send functions ----
void playdtmf(uint8_t number, long duration)
{
 freq1.play(dtmf_freq1[number], duration);
 freq2.play(dtmf_freq2[number], duration);
}


the code/function want add

i want 5 readings dtmf before returns data
so want take 5 readings 1 reading (as combined number)
example if got following numbers "6,2,6,8,0"  it store in variable "62680"
then print number


another way of explaining

i send dtmf tone "6"   -- stores 5 variable named "tone_bank"
i send dtmf tone "2" adds 2 variable named "tone_bank"  *now "62"
i send dtmf tone "6" again-- adds "6" variable "tone_bank" (that value "626")
i send dtmf tone "8" adds "8" variable named "tone_bank" (that value "6268")
i send dtmf tone "0"  it adds "0" variable named "tone_bank" value "62680")
since count 5 "prints" variable

welcome forum. please read 2 posts @ top of forum nick gammon on guidelines posting here, use of code tags make code look

code: [select]

like thiswhen posting source code files. also, before posting code, use ctrl-t in ide reformat code in standard format, makes easier read.

if have posted without using code tags, open message , select "modify" pull down menu labelled, "more", @ lower left corner of message. highlight code selecting (it turns blue), , click on "</>" icon @ upper left hand corner. click on "save" button.

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