• 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...
  • register banks
    Hello, 1) May I know the best way to utilize the register banks for OS functions, ISR and Application functions? 2) What is the difference in terms of code speed and size if a) i were to use the...
  • 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 lpc2148
    Hi all, i have a problem with a fiq interrupt lpc2148. I use keil uvision4 and when i compile the code, return me the following error: #130: expected a "{" My code is: #include <lpc214x.h...
  • 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...