In this tutorial we will going to wire the HC11 / HC12 UART module a new generation multi-channel embedded wireless transmission module. This module is works on 433 ~ 473 MHz frequency band, you can also set this module works
Setup and Configure C Library with WiringPi on RPI
WiringPi is an Arduino wire like library written in C, In Arduino wiring is the core input and output for the Arduino, and wiring is already part of the Arduino IDE software. The Raspberry Pi has a 26 pin GPIO