Hi, I have to implement a receiver/decoder for a typical manchester encoded signal. I have to use a mircocontroller for this. someone tipped me on using what he called "oversampling and counter algorithm". but i can't find any useful reference. any help please. cheers PS. I have no background on communication
Honework or study project?
-- Tauno Voipio
There's a nice flowchart and timing diagrams for Machester coding in the Telefunken (now Atmel) U2270 data sheet .. or was it an application note? Anyway, find all you can on the Atmel site on that IC and that should get you going.
Viktor
AN3015 of Freescale. Should give you some hints.
Anyway learn to use google, in the first 10 result of "manchester decoding" search string there should be enough meterial to solve the problem.
Bye Jack
If it's low noise, low speed, and low clock jitter then there's a bazillion solutions out there and the question boils down to which one you can get done soonest and that tickles your fancy.
As each one of those 'lows' are raised to 'middlin' or 'high' then the problem gets progressively harder. You haven't said, so there's not much guidance to give beyond what you've gotten so far.
-- Tim Wescott Wescott Design Services http://www.wescottdesign.com Do you need to implement control loops in software? "Applied Control Theory for Embedded Systems" was written for you. See details at http://www.wescottdesign.com/actfes/actfes.html
Thanks to you all for you answers. (it is a study project.).actually i was looking for a reference on "oversampling and counter algorithm". Obviously, i googled for before posting in here. anyway, i'll study the reference given above, thanks for your help
Thierry skrev 2010-08-20 13:06:
The later Atmel 32 bit micros have manchester encoder/decoder implemented in the USART.
-- Best Regards Ulf Samuelsson These are my own personal opinions, which may or may not be shared by my employer Atmel Nordic AB
Did you google for 'manchester encoding' or 'manchester decoder'?
I got more than a quarter million responses, many to the point on the very first pages.
Do you have a clock already synchronized to the basic data rate when you get the data in?
-- Tauno Voipio tauno voipio (at) iki fi
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