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C haron
stranger

Reged: May 18 2009
Posts: 2

hi-tech c51-lite code request with interrupts preferably
#112212 - Mon May 18 2009 03:02 AM

Hello,
I'm using hi-tech c51-lite v9.60 in NI Multisim, and it seems that interrupts are not working.
the syntax is different, i cant write

void externalInter0() interrupt 0
{} and writing

interrupt void ISR(){ } like for a pic doesnt seem to do anything.

Please help.

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Dan Henry
Guru

Reged: Oct 16 2003
Posts: 3873
Loc: Colorado

Re: hi-tech c51-lite code request with interrupts preferably [Re: C haron]
#112262 - Mon May 18 2009 08:03 AM

Quote:

I'm using hi-tech c51-lite v9.60 in NI Multisim, and it seems that interrupts are not working.
the syntax is different ...

Different than what? Different than what is described in the compiler manual?

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C haron
stranger

Reged: May 18 2009
Posts: 2

Re: hi-tech c51-lite code request with interrupts preferably [Re: Dan Henry]
#116532 - Thu Jun 11 2009 09:16 AM

hi, im back, thought I got past this issue, but it's still here.
I have the lite version, and in the manual I cant find how a simple interrupt example.

this is a small example from keil, and it's how i'm used to write an interrupt
can someone write this to work for hi-tech C51 lite

#include

unsigned char ex0_isr_counter = 0;

void ex0_isr (void) interrupt 0
{
ex0_isr_counter++;
}
void main (void)
{
IT0 = 1;
EX0 = 1;
EA = 1;

while (1)
{
}
}

this is what I wrote for C51 lite.
I'm using Nation Instruments Multisim. I have a clock generator connected to pin P32 and I have a osciloscope conected to P32 and to P10 to see.
The clock is ok, pin P10 is allways high.

#include
void main(){
IT0 = 1;
EX0 = 1;
EA = 1;
}

interrupt void
external0_intr(void){
if(P10==0)
P10=1;
if(P10==1)
P10=0;
}

please help

Edited by C haron (Thu Jun 11 2009 02:29 PM)

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