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Changing the value of a passed variable

 
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pebbert9



Joined: 31 Dec 2010
Posts: 39

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Changing the value of a passed variable
PostPosted: Wed Oct 05, 2011 11:33 am     Reply with quote

I've used the following in another system but it's not working in CCS. Why isn't max_counter changed to 10?

Code:
#include <18F4550.h>
#device ICD=TRUE

#fuses HSPLL,PLL4,NOLVP,NOWDT,PUT,ICSP1

#use delay (clock=20000000)

#use RS232(DEBUGGER)


int max_counter;

void foo(int *num)
{
   *num = 10;
}

void main()   
{
   
   max_counter = 1;
   foo( max_counter );

   printf("MAX COUNTER = %d",max_counter);
   
   while (TRUE) 
   {
       
   }
}
newguy



Joined: 24 Jun 2004
Posts: 1908

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Re: Changing the value of a passed variable
PostPosted: Wed Oct 05, 2011 11:46 am     Reply with quote

pebbert9 wrote:
I've used the following in another system but it's not working in CCS. Why isn't max_counter changed to 10?

Code:
#include <18F4550.h>
#device ICD=TRUE

#fuses HSPLL,PLL4,NOLVP,NOWDT,PUT,ICSP1

#use delay (clock=20000000)

#use RS232(DEBUGGER)


int max_counter;

void foo(int *num)
{
   *num = 10;
}

void main()   
{
   
   max_counter = 1;
   foo( max_counter );

   printf("MAX COUNTER = %d",max_counter);
   
   while (TRUE) 
   {
       
   }
}


Try:

Code:
foo(&max_counter);
pebbert9



Joined: 31 Dec 2010
Posts: 39

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PostPosted: Wed Oct 05, 2011 12:10 pm     Reply with quote

thank you
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