AVR-Chat

Is this something like what you were trying to achieve

Increments otherval to 650 then jumps to Do_other_stuff

Decrements otherval to 649 then increments to 650 and so on forever?

 

Owen.

 

 

 

 

//ICC-AVR application builder : 30/01/2007 8:29:57 PM
// Target : M16
// Crystal: 4.0000Mhz

#include <iom16v.h>
#include <macros.h>

void port_init(void)
{
 PORTA = 0x00;
 DDRA  = 0x00;
 PORTB = 0x00;
 DDRB  = 0x00;
 PORTC = 0x00; //m103 output only
 DDRC  = 0x00;
 PORTD = 0x00;
 DDRD  = 0x00;
}

//call this routine to initialize all peripherals
void init_devices(void)
{
 //stop errant interrupts until set up
 CLI(); //disable all interrupts
 port_init();

 MCUCR = 0x00;
 GICR  = 0x00;
 TIMSK = 0x00; //timer interrupt sources
 SEI(); //re-enable interrupts
 //all peripherals are now initialized
}

//Code that doesn't work:


unsigned int otherval;

void Do_other_stuff(void)
{

/* do other stuff here ( caution void does not pass a value */

otherval --;

}



main ()
{ 
void Do_other_stuff(void);
unsigned int val;


val = 650;
otherval = 0;
while (1)
{
while (otherval < val)
{
otherval++;
}
while (otherval >= val)
{ 
Do_other_stuff();
}
}

}
                  

 



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