David,

Fe questions, do you need bidirectional link or only one direction ?
Does the baud rate of the RS232 output from the receiving side must to
be 4800 ?  What is the max/recommended bit rate for your radio link ?
Does your radio link has any minimum requirements for bit rate or can
you send long ones and zero's ?  What is the interface of your radio
link (digital, analog, etc).


It's all depends of the requirements and the radio link you are using.
In the best scenario, you can simply connect the RS232 to the
transmitter and get the data on the other end. At the worst, you many
need to do some modulation/demodulation. You need to be able to answer
these questions before you dive into the specific of the PIC and if the
selection of the radio link is still open, try to find one that will fit
the requirements.

My 2C,

Tal

> -----Original Message-----
> From: pic microcontroller discussion list
> [mailto:PICLIST@MITVMA.MIT.EDU] On Behalf Of dclark@YHAMERICA.COM
> Sent: Wednesday, May 21, 2003 7:58 AM
> To: PICLIST@MITVMA.MIT.EDU
> Subject: [PIC]:Manchester Encoding for low power RF module
>
>
>      I have a project where I am trying to send rs-232 data
> one way over a commercial low power radio module, & am trying
> to use a 16f627 to encode the data on the transmit side &
> another 16f627 to decode the data on the receive side.  I
> have no control over the rs-232 data, since it is being
> generated by another device @ 4800 baud with only Tx & SG
> signals.  I am very new to programming PIC's, so I really
> don't even know where to begin. Would anyone have any
> experience with this type of application, or have any
> suggestions on where to start?  I have searched everywhere I
> can think of, but all I have found so far have been general
> references to Manchester Encoding, nothing detailed enough to
> get me started.  Any help would be greatly appreciated.
>
> Thanks,
> David
>
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