AVR-Chat

----- Original Message -----
From: "Alexandre Guimaraes" <listas@logikos.com.br>
To: <AVR-Chat@yahoogroups.com>
Sent: Saturday, August 07, 2004 04:21
Subject: [AVR-Chat] Timing Profiler.


> Hi,
>
>     Does anyone have a ready made structure to make a
"profiler" for a
> program that has the usual embedded structure of some
timer routines that
> take quite some time to execute and a small main loop ??
>
>     I have an application where I maybe pretty close to
use all CPU time
> available and I would love to find a way to check how
close I am without
> having to count all the cycles in all possible paths of
the program. That
> get's even harder with the timer interrupts.
>
>     Any ideas ??
>
> best regards,
> Alexandre Guimaraes

If you have a spare I/O pin, you could set that pin on entry
to a function and clear it on exit.  You can then either
observe the pulse width on a scope or make an integrator and
read the duty cycle directly on a volt meter.

Erikc  - firewevr@airmail.net
///
"An Fhirinne in aghaidh an tSaoil."
"The Truth against the World."
        -- Bardic Motto
///I did NOT lose my mind!  It's backed up on the server
(and the network's down....)