basic tinyduino telemetry sketch for HopeRF 433 MHz SI4432 module

trying to get the tinyduino 433MHz long range radio shield up and running. basically want to send characters one way from the TX to the RX module. This would be an application layer (I guess?) to be a virtual one way wire transmitting telemetry data at a low rate from the TX module to the RX module. would like a function or sketch which would provide something like transmit_function(transmit_string, returns error_code) receive_function(receive_string, returns error_code) in a nutshell would like to send some text to this function on the transmit end and it would send the text over the air using the tinyduino SI4432 hardware and be received using the receive function on another instance of the tinyduino SI4432. I'm not running the telemetry very fast, a string at 9600 would be ok. deliverable would be the Arduino code and libraries/dependencies setup so that I can run a test TX->RX "hello world" transmit over the Tinyduino modules.