Sending data between AM receiver and transmitter using UART

[Zhane]

say i have a pair of AM receiver and transmitter... how should I use it to send data from 1 receiver to 1 transmitter end?

should I use uart?
how should I encode the data? I've read about manchester encoding..but it's rather complex. does anyone has the C source for it?

 

[rajeshkumar123]

Re: RF & PIC

HI,

U have to use the UART here.

First you have to send preambles for proper reception and sync word for every packet to ensure byte Synchronisation

 

[Zhane]

Re: RF & PIC

dont really get you...

1 packet is 8N1?
so i have to send 2 packets of 8bit data?

erm...how can i receive 2 packets of them?

 

[rajeshkumar123]

Re: RF & PIC

HI,

A packet means it is a collection of bytes. Preamble is sent first and then the sync word then the actual data finally the CRC for error detection.I hope u got it.

 

[Zhane]

Re: RF & PIC

i tried.. sending 0xFF all the time, and only data when required.

my receiver... ignores all 0xFF, and only decode non- 0xFF

but.. doesnt quite respond to the way i want it to be