I need to transmit a string of message between two Radio frequency transmitter. The message will be stored a microcontroller (e.g. 8051). How to go about writing a program for it and how to interface between the micrcontroller and the transmitters. I am still an amauteur when comes to embeded programming. Any source code or info on this ?
You can find sample serial IO code in the Support section of this site, and in the Examples folder in your C51 installation. The fact that there is an RF portion in the serial link is of no consequence whatsoever. (in fact, for debugging, you should start with a direct-connected link, before introducing the vagaries of RF...)