Elapsed Timer findings

[longpole001]

Tabsoft

Re: Elapsed Timer findings
Actually, it really looks like DT's "Elapsed_INT-18.bas" file in his T_Elapsed-18 project which uses DT_INTS-18 for 18F PICs.
That is where I got the inspiration for my version of the 1ms Elapsed Timer Demo for DT_INTS-14 and I posted in the separate thread in the Code Examples forum.

tabsoft is correct its from DT website at the time , using DT_INTS-18 ,

and like tabsoft found i also required a test pin ( spare pin) to toggle , where i put a CRO on it to , then tune the main osc to get a 10ms pulse , so to be as accurate as possible ( i am using the internal OSC )


and from tabsofts excellent break done looks like darrels " elapsed_int_18.bas ", asm is correct as he uses 65536 to caclulate the reload value

[Art]

Consider it tested
GPS PPS signal (yellow trace) compared to DT’s Elapsed Timer (red trace)... port bit pulse every hundred interrupts at 100Hz in the ISR (1 PPS also).
Pic is clocked with 10MHz rubidium module.
At 1uS resolution on the scope, even one instruction cycle error would cause the clocks to run away from each other very quickly!