Hi, this is my first post to the list so I hope it's going to the right =
place/formatted correctly :-)

I'm working on a (commercial) project that involves a 16C73, most of the =
other circuit functions are done but I still need to read ADC channel one =
(RA0), process the value and create a signal that gets sent to a piezo =
sounder.
The ADC is my main problem, I have it reading values, thanks to the =
Piclist FAQ, but I need the PIC to sleep for as much of the time as =
possible, it's currently sleeping while it converts then it wakes up and I =
send its value to the piezo code, but I need then to put it back into =
sleep and wait until ADC channel one or RA1 changes (circuit power use is =
critical).
I think I can work out how to wake from sleep on RA1 changing, but I don't =
even think it's possible to wake from sleep on a change in the analog =
input?

And, as a side note, does anyone know anything about piezo sounders?
On the sig-gen it's frequency response can only be described as pathetic, =
and it appears (annoyingly) to have a sweet spot at 3KHz, the customer =
wants a 'Tone' control and as I can't just vary the frequency like I was =
hoping to do I'm a bit at a loss.
I think something along the lines of a complex waveform with the ADC value =
being used to vary the harmonics would be the way forward, has anyone done =
this before?

Many thanks to anyone who can suggest anything,

Jonathan Starr   =20

R&D Technician
Electronix Limited

Tel +44 (0)1993 700510
Fax +44 (0)1993 700511


e-mail jonathans@electronix.co.uk

web www.electronix.co.uk

This e-mail has been sent to you by Electronix Ltd.
This communication is intended for the addressee only, is private and=20
confidential, and is subject to the applicable terms and conditions.
If you are not the intended recipient, any disclosure, copying or
distribution of this information is strictly prohibited.

--
http://www.piclist.com hint: To leave the PICList
mailto:piclist-unsubscribe-request@mitvma.mit.edu