On Tue, 10 Feb 2004, sandeep kumar wrote: > i am working on a application which require me to have a > continous UTC clock.how can i setup a clock in 21060? is there any > ready made function.can it be done by using processor's 40Mhz clock. > any idea about coding? > As this is internally genrated clock,it wont be very > accurate soi also have to apply corrections which are being > transmitted in the signal in real time,but thats secondary task. Why not use an external real time clock, like Dallas Semi makes? They've got battery backup and a byte wide or serial port. It's pretty easy to fake it tho, just use a timer interrupt and increment a clock register once a millisecond. You can adjust it with some correction factor measured empiricly over long times. Patience, persistence, truth, Dr. mike |