I need to transmit a string of data between two RF modules. The data will store into 8051. How to write a program to interface the microntroller and transmitter using embeded programming? Beside that how to write a program to send out the data.
"We did a another test to make sure our SBUF for the receive and transmit is working by using a Null Moderm connection. Now we are sure there is nothing wrong with the SBUF in 80C251." Very good - you should always test with a wired link first before bringing in the wireless modules and all the vagaries of RF links. " Now we think the main problem is the RF module unable to communicate to each other" You are now beyond the scope of this forum. This forum is for discussing Keil tools - you've established that this bit is working. You need to contact the module supplier regarding problems with the modules. Anyhow, you haven't stated what module you're using - how can anyone help without that basic information?!