Lpc2000

--- In lpc2000@yahoogroups.com, vineet jain <vineetrvce@...> wrote:
>
> I meant the toolchains these two IDE's use. Ideally the way IRQ
interrupts are called should be the same as both use GCC.
> 
> Also how do you plan to write IRQ routine for let's say:
> 
> an RTC and a UART.
> 
> beacuse in the sample code they talk about an IRQ stub ( mentioned
in earlier mail ). 
> 
> If anyone's using GCC, please send an sample code for activating two
IRQ interrupts.
> 
> Thanks and regards,
> Vineet.

In my initialization code (substantially snipped):

	// set up I2C
	
	VICVectCntl1 = 0x00000029;	// select a priority spot for a given
interrupt
	VICVectAddr1 = (unsigned long) I2CISR;	// pass the address of the ISR
	VICIntEnable = 0x00000200;	// enable interrupt

	// set up Timer 0

	VICVectCntl3 = 0x00000024;	// set priority 3 for Timer 0
	VICVectAddr3 = (unsigned long) T0ISR;	// pass the address of the ISR
	VICIntEnable = 0x00000010;	// enable interrupt

.....

In my 'interrupt.h' where I deal with the timer interrupt prototype

void T0ISR         (void) __attribute__ ((interrupt       ));
void IRQ_Routine   (void) __attribute__ ((interrupt("IRQ")));
void FIQ_Routine   (void) __attribute__ ((interrupt("FIQ")));
void SWI_Routine   (void) __attribute__ ((interrupt("SWI")));
void UNDEF_Routine (void) __attribute__ ((interrupt("UNDEF")));


In my 'interrupt.c' where the timer interrupt does nothing:

void T0ISR(void)
{
	TIMER0_IR = 0x01;
	VICVectAddr = 0xFF;
}
	
void IRQ_Routine (void) {
	while (1) ;	
}

void FIQ_Routine (void)  {
	while (1) ;	
}

void SWI_Routine (void)  {
	while (1) ;	
}


void UNDEF_Routine (void) {
	while (1) ;	
}

In my i2c.h file where I provide the prototype for I2CISR:

  void I2CISR (void) __attribute__ ((interrupt));


And, finally, there is code in i2c.c that implements the I2C state
machine in the I2CISR interrupt handler.  Not posted here

Richard