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I want to write function for fiq interrupt on LPC2378, Here the program which I have try to run. But it gives error.
void T0isr(void) __fiq //__irq {
T0IR = 1; /* clear interrupt flag */
T0TCR = 0;
Enable_Timer1();
T0TCR = 1;
VICVectAddr=0xff; }
void Timer0_Init(int interval) { /*Load prescaler for 1mSec*/
T0PR=PRESCALER; /** * T0TCR: Timer 0 Control Register * 2: reset counters (both timer and prescaler) **/
T0TCR=2; /* * interrupt and clear when counter=match */
T0MCR=3; /* * interrupt every ms */
T0MR0=interval;
/** * T0TCR: Timer 0 Control Register * 1: enable counting **/
T0TCR=1;
// VICVectAddr4= (unsigned)T0isr; // Set the timer ISR address // VICVectCntl4= 0x00000020 | 4;
VICIntSelect = 0x00000010; VICIntEnable= 0x00000010; }
this program give error
freq.c(184): error: #130: expected a "{"
This program is running for irq but not for fiq....... If anyone know the method of writing a fiq ... please reply to me
Look buddy, I don't mind helping you - but you need to state in clear language what the problem/question is, yes? And drop the dots.
Technical discussions don't need ....... in them. And technically speaking, you have one or three puncutation characters. "..." "." "??!", "???", etc.
Anyway - you register a FIQ handler in exactly the same way that you register an IRQ handler. You don't play with any absolute address. You assign the function pointer of the handler to the correct register in the interrupt controller.
Note that the interrupt controller has configuration to specify a priority for each interrupt channel - and it also have configuration to specify if using IRQ or FIQ.
This is covered in the datasheet/user manual for the processor. Just playing around with all the dialog boxes in the Keil simulator should also give you a good idea about exactly what settings the processor supports - for each of these settings, you could consider: - not needed because not used - default value is good - need to assign own value
Above three choices should be applied for everything configurable in the processor.
Thanks