I use a different trick. 1) Make sure no more pulses will occur on the input by making it an=20 output or analog input. 2) Toggle the TOSE bit to generate pulses to the counter until it counts. Kerry On 10/13/2016 4:28 PM, Denny Esterline wrote: > Fuzzy memory says it was in one of the Tips 'n Tricks books. Run signal > though a AND gate, second gate input hooked to a digital output pin. > Connect another output pin to the counter input pin, - I think there was = a > resistor from the gate to the counter input to avoid contention. > In use- after count time, pull the control line to the AND gate low, then > clock the other pin while checking the count register. If you count how > many pulses it takes to see the count register change, and you know the > prescaler setting, a little math gets you to the value that was in the > prescaler register. > > > -Denny > > > > On Thu, Oct 13, 2016 at 12:37 PM, wrote: > >> Yeah, it seems to me you count clock cycles until you get an interrupt= , >> then subtract that number from 255. That will give you the starting >> count of TMR0. >> >> >> Regards, >> >> Jim >> >>> -------- Original Message -------- >>> Subject: [PIC] Timer0 prescaler >>> From: David C Brown >>> Date: Thu, October 13, 2016 2:08 pm >>> To: "Microcontroller discussion list - Public." >>> >>> >>> ISTR an application showing how you could deduce the value in this >> register >>> (mid range PICS such as 'F88) but cannot find it now. Anyone help? >>> >>> -- >>> __________________________________________ >>> David C Brown >>> 43 Bings Road >>> Whaley Bridge >>> High Peak Phone: 01663 733236 >>> Derbyshire eMail: dcb.home@gmail.com >>> SK23 7ND web: www.bings-knowle.co.uk/dcb >>> >>> >>> >>> >>> *Sent from my etch-a-sketch* >>> -- >>> http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive >>> View/change your membership options at >>> http://mailman.mit.edu/mailman/listinfo/piclist >> -- >> http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive >> View/change your membership options at >> http://mailman.mit.edu/mailman/listinfo/piclist >> --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .