Implementing FSK in a dsPIC
Dario Greggio email (remove spam text)
Hector Martin wrote:
> I'm looking for information on how to implement a Bell 202 FSK decoder
> in software (DSP).
Hi Hector, I've been using a schematic/firmware for 18F2550 for CallerID
on tlephone lines.
I found it somewhere on a site (maybe microchipc.com or alike, don't
remember) and adapted it to 16F628 assembler.
It works good enough: it is based on zero-crossings and interrupts/timer.
I can post the link or the code in case you're interested.
In reply to: <473D03C7.email@example.com>
See also: massmind.org/techref/microchip/ios.htm?key=spi