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LPC 2148 timer o interrupt working once

hi ,

I am configuring LPC 2148 timer 0 in interrupt mode, i am able to receive pnterrupt once but next time interrupt is not generating.(interrupt occurs at rate of 1 second)

Following are the routines

/****************************************************************************************
*Function :timer init
*Inputs_gen :
*Output :
*Purpose :This function INTIALISES TIMER 0
****************************************************************************************/

void timer0_init(void) {

T0TCR=0X02; // RESETTING THE TIMER COUNTER AND PRESCALER COUNTER

T0IR=0XFF; // RESETTING ALL THE INTERRUPT

T0CTCR=0X00; // SELECTING TIMER /COUNTER MODE

T0TC=0X00000000; // TIMER COUNT REGISTER

T0PR=0X10DFF; // PRESCALER REGISTER

T0PC=0X00; // PRESCALER COUNT REGISTER

T0MR0=0XFF; // MATCH REGISTER

T0MCR=0X0005; // RESET TC AND STOP TIMER & GENERATES INTERRUPT
WHEN TC==TOMRO

}

/****************************************************************************************
*Function :timer0_start
*Inputs_gen :
*Output :
*Purpose :This function is used to start
****************************************************************************************/
void timer0_start(void) { T0TCR=0X01; // RESETTING THE TIMER COUNTER AND PRESCALER COUNTER

}

/****************************************************************************************
*Function :timer0_reset
*Inputs_gen :
*Output :
*Purpose :This function is used to reset pc and tc
****************************************************************************************/
void timer0_reset(void) {

T0TCR=0X02; // RESETTING THE TIMER COUNTER AND PRESCALER COUNTER

}

/****************************************************************************************
*Function :timer0_int
*Inputs_gen :
*Output :
*Purpose :This function is used to initalize timer interrupt
****************************************************************************************/
void timer0_int(void) {

VICIntEnable=0x00000010;

VICIntSelect=0x00000010;

}
/****************************************************************************************
*Function :timer0_start
*Inputs_gen :
*Output :
*Purpose :This function is used to start
****************************************************************************************/
void timer0_start(void) {

T0TCR=0X01;

}

T0TCR=0X02; // RESETTING THE TIMER COUNTER AND PRESCALER COUNTER

}

VICIntSelect=0x00000010;

}

/****************************************************************************************
*Function :FIQ_Handler
*Inputs_gen :
*Output :
*Purpose :This function is FIQ interrupt
****************************************************************************************/

void FIQ_Handler (void) { if((VICFIQStatus & 0x00000010)==0x00000010) {

T0IR=0xFF;

puts_gen("\n\r Timer interrupt generated",0);

puts_gen("s",0);

//VICIntEnable=0x00000010;

timer0_reset();

timer0_start();

} else {

puts_gen("\n\r some one else",0); } }

Following is the change in startup 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

I am suspecting some problem in my asm file changes of FIQ HANDLER can any body suggest the cause of problem

regards
sumit