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converting integer to character

 
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Lukas89



Joined: 06 May 2012
Posts: 2

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converting integer to character
PostPosted: Sun May 06, 2012 3:20 pm     Reply with quote
Hello,
I'm using PIC18F4550 and hyperterminal communication via USB. I want to convert integer value to character, it's for displaying in LabView graph. Code I'm using is below:
Code:

void main(){
   int a=25;
   char str [33],RcvUSB;
   usb_cdc_init();
   usb_init();
   do {
      usb_task();
     
      if (usb_enumerated()) {
         RcvUSB=usb_cdc_getc();
         if(RcvUSB='q'){
         printf(usb_cdc_putc,"\n\r%c", RcvUSB);
         itoa(a,str,10);
         printf(usb_cdc_putc,"\n\rdecimal = %s",str);
         itoa(a,str,2);
         printf(usb_cdc_putc,"\n\rbinary = %s",str);
         itoa(a,str,16);
         printf(usb_cdc_putc,"\n\rhexademical = %s",str);
         
         }while(TRUE)
}

OUTPUT(copy from terminal):

    q
    decimal = 
    binary = 
    hexademical = 

I got unreadable character, in fact somehow its looks like smileface. I tried to use %c, %d instead of %s, but nothing seemed working. I will appreciate for your attention.
jeremiah



Joined: 20 Jul 2010
Posts: 1354

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PostPosted: Sun May 06, 2012 4:21 pm     Reply with quote
you need to look at itoa in the compiler manual again. Specifically the parameter order.
Lukas89



Joined: 06 May 2012
Posts: 2

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PostPosted: Sun May 06, 2012 4:38 pm     Reply with quote
Indeed, the order was wrong. Looked at itoa function and changed code:
Code:

void main(){
   char RcvUSB;
   usb_cdc_init();
   usb_init();
   do {
      usb_task();
     
      if (usb_enumerated()) {
         RcvUSB=usb_cdc_getc();
         if(RcvUSB='q'){
         int32 a=25;
         char str [33];
         printf(usb_cdc_putc,"\n\r%c", RcvUSB);
         itoa(a,10,str);
         printf(usb_cdc_putc,"\n\rdecimal = %s",str);
         itoa(a,2,str);
         printf(usb_cdc_putc,"\n\rbinary = %s",str);
         itoa(a,16,str);
         printf(usb_cdc_putc,"\n\rhexademical = %s",str);
         }while(TRUE)
}


OUTPUT(copy from terminal):
    q
    decimal = 25
    binary = 11001
    hexademical = 19


Thanks jeremiah.
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