On Sun, Dec 7, 2008 at 12:05 PM, Robert Kiely wrote: > Just glanced at the code there and first thing off is you need enable > interrupts by setting the relevant bits in the INTCON register or an > interrupt will never be caught so your code will just get to the sleep > part and stay there. You also need to clear the relevant bit of the > ANSEL register to set the input to digital for the push button. Inputs > default to analogue on power-up. This can be seen on page 98 of the > datasheet in the A/D converter section. Above each bit it says R/W - > *1*, this mean it defaults to 1. Also you have no interrupt function > or ISR as it's called. When an interrupt does occur code execution > will jump to the interrupt vector and needs to be handled from there, > at a minimum you need to clear the interrupt flag to prevent an > infinite loop of interrupts. You say you looked at the datasheet but > it seems you didn't. Getting started can be hard but there are *so* > many examples out there on the net just ask Uncle Google and he'll > sort you out. Hope this help somewhat... oh and if you search the list > archives on the 23 Nov this year you will get my post about timer0 > interrupts which should help shed some light and how interrupts work. I don't know how to do this. The data sheet doesn't explain anything either. -- ..::[ solarwind ]::.. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist