Download the XRange source files from  GitHub. Extract the archive in Examples there are subdirectories with the project files for different IDEs. Open the project file for your preferred IDE  (Example with EmBlocks). The project file is configured to work with the ST-link/V2, press F8 or from menu Start/stop Debug Session to upload the firmware to the board.

The XRange SX1272 LoRa Starter Kit is preloaded with the PingPong demo. To test the the kit make the wiring  from the diagram below.    XRange connections – Schematic The PingPong demo blinks the red LED when transmit RF data (ping) and blinks the green LED when receives the response (pong).

There are two methods to upload a firmware in the XRange module. XRange connections – Schematic Embedded DFU USB Bootloader To run the embedded DFU USB bootloader –  hold the the BOOT button  ( it connects BOOT0 pin  to the Vout), next reset the board with RESET button. When the embedded boot loader runs your operation

XRange  Demo with Mbed platform Crate mbed account at https://developer.mbed.org/ From your account import the PingPong demo firmware. Do right-click  on My Programs select Import Program from URL (https://developer.mbed.org/users/netblocks/code/XRangePingPong/)      Next compile the PingPong program. After successful build the Mbed IDE downloads the binary file with the firmware on your PC. Debug messages are sent by UART2