traxonja
Advanced Member level 4
Hi,
I would like to start developing a simple simplex radio device on 900MHz. For transmission I will use rfPIC12F675H and for reception rfRXD0920, both will work in FSK mode. I want to transfer data using standard (or some other custom) serial (RS232) protocol.
Due to lack of information on the internet, design tips and samples for designing such a device I really need some help here
.
How do I modulate that serial data I want to transfer? Ofcourse, FSK as I allready said. But, HOW do I make the rfPIC to output that FSK data on it's FSKout (pin16) which will be connected to the modulation pin of the transmitter DATAfsk (pin15). Is there ANY sample written in asembler for this? Is that FSK data simply going to be two different frequencies? For example, FSK communication for radio-amateur packet radio is 1200 baud (the two frequencies for logical '1' and '0' would be: 1200Hz and 2200Hz) (Bell 202 standard, also used in CallerId).
I am just confused here :roll: .
Talk about the rfRXD0920 will be a story (a post) of it's own 8) .
Thanks everybody.
Trax
www.elektronika.ba
I would like to start developing a simple simplex radio device on 900MHz. For transmission I will use rfPIC12F675H and for reception rfRXD0920, both will work in FSK mode. I want to transfer data using standard (or some other custom) serial (RS232) protocol.
Due to lack of information on the internet, design tips and samples for designing such a device I really need some help here
. How do I modulate that serial data I want to transfer? Ofcourse, FSK as I allready said
. But, HOW do I make the rfPIC to output that FSK data on it's FSKout (pin16) which will be connected to the modulation pin of the transmitter DATAfsk (pin15). Is there ANY sample written in asembler for this? Is that FSK data simply going to be two different frequencies? For example, FSK communication for radio-amateur packet radio is 1200 baud (the two frequencies for logical '1' and '0' would be: 1200Hz and 2200Hz) (Bell 202 standard, also used in CallerId). I am just confused here :roll: .
Talk about the rfRXD0920 will be a story (a post) of it's own 8) .
Thanks everybody.
Trax
www.elektronika.ba