Dwayne Reid ha scritto:

> Many thanks for the suggestion.  Unfortunately, I don't have the time 
> to learn how to write this code right now - I have to deliver 22 
> finished, working boxes in 3 weeks.  Yeah - its a small project but 
> its for a good customer.
> 
> Does anyone have code snippets available?  Links to existing 
> code?  I'd like to learn how to do this.


Hi Dwayne
I found an application (code + hw) for a CALLER-ID detector on a 18F2550 
USB device.
I adapted the code to a 16F in assembler and got it working soon enough. 
It uses the Goertzel and you might easily adapt it to DTMF - basically 
similar range of frequencies.

Also the HW side (1 or 2 Op-Amps and a transformer to split the 2 sides) 
should be almost similar.


-- 

Ciao, Dario
--
Cyberdyne
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