[avr-gcc-list] how to measure execution time on avr butterfly?

[Dave]

Thank you all for your previous responses. I would
like to measure execution time of a routine or a
program on AVR butterfly, but I don't have any
hardware tools. If possible, I would like to do it in
software and display it on the LCD. For example, can I
use interrupts and measure the time in between? Any
help will be greatly appreacited.

Thank you.

--- David VanHorn <address@hidden> wrote:

> On 2/9/06, Dave <address@hidden> wrote:
> >
> > Is there a way to do it software? Thank you.
> 
> 
> Well.. Again, we need to know what tools you have.
> 
> You COULD start a timer at the beginning of a
> routine, and read it at the
> end, but then you have to output that value
> somewhere.   Display maybe,
> Serial through the UART, or even a D/A converter and
> analog meter!
> 
> You COULD set a pin high at the beginning of a
> routine, and low at the end,
> and read that on an oscillicscope or logic analyzer.
> (that's what I do, but
> I have both tools)
> 


__________________________________________________
Do You Yahoo!?
Tired of spam?  Yahoo! Mail has the best spam protection around 
http://mail.yahoo.com