About timer0

[mcisabel]

Hi, I`m using a PIC18F452. Can somebody give me some code to make timer0 interrupt every 10 us?

[MikeValencia]

Do you want 10 microseconds or 10 milliseconds?

At 10 us, you'd be interrupting ALL the time, and won't have any time to do stuff outside the ISR!

For example, at 4MHz, each instruction would take 1uS to fulfill, and isr context saving overhead alone is a good 20+ instructions.

If you really want a solid 10uS delay, then you'd have to turn off interrupts, and do 10 Noops (@4Mhz Fosc), or call delay_us(10); or delay_cycles(10);

[Mark]

You also don't specify the frequency of the PIC which is important.