Lpc2000

> You don't say anything about the signals, e.g. whether they're
> analog or digital, or how stable they are in frequency.
>

I am sorry the message was hurriedly posted.
I am using 4 proximity switches with toothed wheel to determine the speed of
4 shafts. The shaft are driven by 4 different source and not linked.
The output from each proximity can vary from 0 to kHz.

Earlier we were using C8051F040 (CAN not used) with 5 timers. We had
allotted a timer/counter channel to each proximity and we could get speed
accurately.

Now same design is being shifted to LPC2136.
Any idea how this can be achieved with one timer, and yes I would like to
avoid interrupt.
 Brendan's idea looks simple, but....?

Best Regards,

Mukund Deshmukh.
Beta Computronics Pvt Ltd
10/1, IT Park, Parsodi,
Nagpur-440022
Cell - 9422113746