Lpc2000

What's the assembly look like?

Charles

--- In lpc2000@yahoogroups.com, "ed_hage" <ed_hage@y...> wrote:
> 
> Thanks for the explanation.
> 
> I defined it as volatile and really it still does not work.
> --------------------------------------------------
> volatile unsigned long	DC0 = 10;
> 
> void IRQMotorOut (void)
> {
>   PWM_MR4 = (PWM_MR0 * DC0) / 100; 
>   PWM_MR6 = (PWM_MR0 * 80)  / 100; 
>   PWM_IR = PWM_RESET_MR0; //clear flag
>   PWM_TCR = (1<<1);
>   PWM_TCR = (1<<0); 
>   VICVectAddr = 0;
> }
> -------------------------------------------------
> MR6 works great, MR4 not. MR4 will work if I put DC0 =20 inside the
> function, but like this its hopeless.I run out of ideas of what it
> could be solved.
> 
> > 
> > When ever you use a global variable, you have to specify it as a
> > volatile to tell the compiler not to opitmize the variable out of the
> > equation when working with any ANSI C compiler.
> > 
> > Also by type casting the variable the same as the register you want to
> > use makes sure that the compiler is not going to do something funky
> > when optimization is performed no matter what level.
> > 
> > regards,
> > Charles
> > 
> > --- In lpc2000@yahoogroups.com, capiman@t... wrote:
> > > The "volatile" is the thing, which makes it worth trying out...
> > >