fiq interrupt code not compiling

hi ajay
below i'm providing my code for external interrupt EINT1 served as fiq . but every time i add keyword _irq compiler gives me error(i'm using keil uvision4(MDK-ARM development tool)

code

include<LPC21XX.h>
 //
void delay_ms(unsigned int time);
void init_interrupt(void);
void FIQ_Handler(void)__irq;

void delay_ms(unsigned int time)
{
 int i,j;
for(i=0;i<time;i++)
{
for(j=0;j<500;j++)
{
}
}
}

void init_interrupt(void)
{
PINSEL0=0X20000000;    // ENABLING EINT1 FEATURE OF P0.14
VICIntSelect=0X00008000; // SELECTING EINT1 INTERRUPT AS FIQ INTERRUPT
VICIntEnable=0X00008000;  // ENABLE EINT1 INTERRUPT
}


int main(void)
{
IODIR1=0X00FF0000;            // USE PIN AS O/P PIN
IOCLR1=0X00FF0000;            //INITIALLY SET PIN LOW
init_interrupt();
while(1);                                 // wait for interrupt
}

 
void FIQ_Handler(void)_irq
{
IOSET1=0X00FF0000;                // set led pins
EXTINT=0X00000002;    // CLEAR EINT1 FLAG
}

output
Rebuild target 'Target 1'
assembling Startup.s...
compiling interrupt.c...
interrupt.c(38): error: #147-D: declaration is incompatible with "void FIQ_Handler(void)__irq" (declared at line 5)
interrupt.c(38): error: #130: expected a "{"
Target not created


i'm also providing changes which i made to start file

Vectors         LDR     PC, Reset_Addr         
                LDR     PC, Undef_Addr
                LDR     PC, SWI_Addr
                LDR     PC, PAbt_Addr
                LDR     PC, DAbt_Addr
                NOP                            ; Reserved Vector 
;              LDR     PC, IRQ_Addr
                LDR     PC, [PC, #-0x0FF0]     ; Vector from VicVectAddr
                LDR     PC, FIQ_Addr
				
				IMPORT  FIQ_Handler

Reset_Addr      DCD     Reset_Handler
Undef_Addr      DCD     Undef_Handler
SWI_Addr        DCD     SWI_Handler
PAbt_Addr       DCD     PAbt_Handler
DAbt_Addr       DCD     DAbt_Handler
                DCD     0                      ; Reserved Address 
IRQ_Addr        DCD     IRQ_Handler
FIQ_Addr        DCD     FIQ_Handler

Undef_Handler   B       Undef_Handler
SWI_Handler     B       SWI_Handler
PAbt_Handler    B       PAbt_Handler
DAbt_Handler    B       DAbt_Handler
IRQ_Handler     B       IRQ_Handler
;FIQ_Handler     B       FIQ_Handler

sorry for long code , but please help me

ok first think to understand is.. FIQ is not IRQ so you cannot use __irq for FIQ handler. and FIQ is just like normal ISR like you've used in small controllers, where as IRQ goes through VIC before it actually starts executing the ISR. thats one of the basic difference in FIQ and IRQ.

So all you have to do is branch to FIQ_Handler C function from FIQ vector in assembly code. thats its...

ajay thanks for your reply but i didn't get it ,will u plz explain it with help of example and if your having any sample code then it will be more helpfull for me

I am really sorry I do not have any sample code. But its pretty straight as I said. Try to remove __irq from FIQ handler function and try compiling again and see if it works.