Forums

manchester encoding decoder

Started by Thierry August 20, 2010
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
On 20.8.10 2:06 , Thierry wrote:
> 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
On Aug 20, 1:06&#2013266080;pm, Thierry <thierrybi...@googlemail.com> wrote:
> 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
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
On 20 Ago, 13:06, Thierry <thierrybi...@googlemail.com> wrote:
> 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
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
On 08/20/2010 04:06 AM, Thierry wrote:
> 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
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:
> 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
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
Thierry wrote:
> 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
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