Lpc2000

--- In lpc2000@yahoogroups.com, Mukund Deshmukh <betacomp_ngp@...> 
wrote:
>
> Hi,
> 
> I have come across strange problem of time interrupt. My timer
> interrupt routine is very simple.
> 
> void __attribute__ ((interrupt("IRQ"))) tc0_cmp(void);
> 
> /* Timer0 Compare-Match Interrupt Handler (ISR) */
> 
> void tc0_cmp(void)
> 
> {
> 
> T0FLG=1;
> 
> main1000++;
> 
> // haul1000++;
> 
> T0IR = TxIR_MR0_FLAG; // Clear interrupt flag by writing 1 to Bit 0
> 
> VICVectAddr = 0; // Acknowledge Interrupt (rough?)
> 
> }
> 
> The interrupt works ok. The moment I uncomment  haul1000++, the
> first interrupt works and there after stops.
> 
> In short if  I increment one variable it works, if I  increment
> more than one variable it stops.
> 
> The processor is LPC2138 and this is the only interrupt I am using.

What version of GCC are you using?  Version 3.3 and older had bugs in 
the interrupt entry/exit code that could show up like this.

Karl Olsen