Sample iBeacon implementation for the nRF52 chipset.

The build environment uses CMake and assumes an nRF52 Development Kit from Nordic Semiconductor.

Press Button 1 on the DK to start advertising in a loop. LED 2 should light up.

In the default configuration, the beacon will advertise for 3 seconds (LED 3 on) followed by 17 seconds of silence.

In each advertising pulse, the beacon's minor value will increment from 1 to 20.

By default, the beacon broadcasts the following identity:

• Proximity UUID: 33013f7f-cb46-4db6-b4be-542c310a81eb
• Major: 204
• Minor: 1 .. 20

Create a CMakeEnv.cmake file on the same level as CMakeLists.txt, with the following contents:

set(ARM_NONE_EABI_TOOLCHAIN_PATH "PATH_TO_ARM_GCC_TOOLCHAIN")
set(NRF5_SDK_PATH "PATH_TO_NORDIC_NRF5_SDK")
set(NRFJPROG "PATH_TO_NRFJPROG")

Example using nRF5 SDK 14.2.0, and the most recent version of the GCC ARM toolchain:

set(ARM_NONE_EABI_TOOLCHAIN_PATH "/Users/ahs/local/gcc-arm-none-eabi-7-2017-q4-major")
set(NRF5_SDK_PATH "/Users/ahs/local/nRF5_SDK_14.2.0_17b948a")
set(NRFJPROG "/Users/ahs/local/nRF5x-Command-Line-Tools_9_7_2_OSX/nrfjprog/nrfjprog")

Generate makefiles and build out of source tree:

cmake -H. -B"build"
cmake --build build --target nrf52-ibeacon

cmake --build build --target FLASH_ERASE
cmake --build build --target FLASH_SOFTDEVICE
cmake --build build --target FLASH_nrf52-ibeacon