AVR-Chat

On 19 Aug 2005 at 11:13, Thomas Keller wrote:

> On Fri, 2005-08-19 at 00:37 -0300, Mark Jordan wrote:
> > http://www.baycom.org/~tom/ham/da95/d_dspmod.pdf
> 
>    I'm afraid I am still unenlightened...my German is still what it
> never was.  *grin*
> 
>   Though I know it is possible to do the filtering in software, I am not
> siufficiently familiar with the specifics of the techniques to know if
> thew AVR is either A) fast enough, or B) powerful enough to accomplish
> this is in realtime.  By no means am I suggesting that it is not, I
> simply don't know.
> 
> Tom
> 

	My german is below zero... But those C routines are in english.

	BTW, I designed that 1200bps modem using an ATMEGA8 running
at 6.144MHz. Lots of time...

	You just have to sample the ADC at 8 times the bit rate.
	At every sample you have to do that math as in the article.
	The rest is bit sync and byte sync.

	Mark Jordan