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Changing the value of a passed variable

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pebbert9

Joined: 31 Dec 2010
Posts: 39

Changing the value of a passed variable

Posted: Wed Oct 05, 2011 11:33 am

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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: 1909

Re: Changing the value of a passed variable

Posted: 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


Posted: Wed Oct 05, 2011 12:10 pm

thank you

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