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volkantr
Joined: 23 Dec 2007
Posts: 11
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 24 Dec 2007 12:49 manchester decoding |
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Hi everyone
Can anyone share assembly code for decoding manchester coded signals and displaying it with using PIC microcontoller?
The system I try to prove is that
A serial bit stream (manchester coded data) comes into the microcontroller.the protocol of the stream:
firstly 1 byte data comes for timing calibration. after that 1byte (16 bits manchester coded) data comes. After that 2 useless bits(intervals between manchester data transitions) comes. than 1byte (16bits manch. coded,second one) data comes. and again 2 useless bit comes..and it goes like this..
let's say the first 1byte data is the most significant Byte of an adress in the memory and the second one is the LS Byte.
I must decode the data in the micro controller and display immediately on 4-digit 7 segment display.
I've searched for days and all the code I found is about RC5 decoding, actually it can be useful but
The difficulty with this type of decoding is that If we have to do some display multiplexing or some
other time critical work to do along with this decoding ,it creates problems.
also I must say that I'm still a beginner of PIC programming..
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blueroomelectronics
Joined: 17 Sep 2006
Posts: 1681
Helped: 99
Location: Toronto, Canada
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volkantr
Joined: 23 Dec 2007
Posts: 11
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24 Dec 2007 17:00 manchester+decoding |
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thanks for your reply.
actually I know this system but there are differences between this and mine.
I try to decode and DISPLAY the data. displaying makes system more complicated because it takes a long time and we may miss the data coming behind.
so what do you suggest.
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picnoobie
Joined: 19 Nov 2006
Posts: 96
Helped: 6
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24 Dec 2007 17:15 Re: manchester decoding PLEASE HELP! |
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first off, I've no idea what is manchester, but if you're doin it in C,
you might want to try a demo of mikroC it has built in library for such a thing.
http://www.mikroe.com/en/compilers/mikroc/pic/builtin.htm
I think it's also builtin to mikroe's other compilers, now you have choice. 
EDIT, OP ask for assembler, excuse my not paying attention to details >
µ
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