Re: [misterhouse-users] Measuring times of short duration

[<Bbi...@ao...>]

Bruce,

In a message dated 01-05-10 09:59:02 EDT, you write:

> How can I measure time
> between two nearly spaced events?  I'd like to be able to
> descriminate down to 250ms or less.

While it is not commonly advertised, the SerialPort modules have a method to 
return milliseconds to the test suite. The resolution is OS dependent - don't 
trust much better than 10-20 ms.

    $milliseconds = $PortObj->get_tick_count;

This is a continuously updating count (and has the 49 day wraparound problem 
on Win32) - so it is only relevant for difference measurements. See the 
SerialPort test programs for examples.

-bill