FIQ

I am a real novice programming ARM7. I have a LPC2138 evaluation board and I use the environment uVision4. I tried to write a programm in C to handle an interrupt FIQ. To do this I followed the example...
FIQ & IRQ

Hi all, can anybody tell me, what is the actual difference between FIQ & IRQ ? Means how FIQ have fast execution time than IRQ ? Is there any hardware changes for FIQ , that increases its execution...
FIQ handler

Hai! I am using LCP2378 controller.here i m using 12Mhz clock externally(Controller runs at 48Mhz speed by enabling PLL related Regs.). Pls tel what is the interrupt latency time for IRQ and...
FIQ and IRQ

hello all, i am doing project on LPC2378 I have one input pin on LPC2378 connected to some other assembly which has opto assembly connected to it when ever opto is cut i.e whenever there...
Optimizing FIQ

I have SPI interrupt defined as FIQ and the execution time for it should be less than 12us, but adding a few checks and the execution time is going out of the limit. I've seen that it takes 2-3us for...