Nordic sdk11.0 支持蓝牙4.2，容易上手，有主机和从机的程序，也有多个外设相关demo(The nRF5 SDK documentation includes descr iptions and other reference material to help you understand the various components of the SDK. Examples are provided for development purposes only and should

NRF5 SDK14.1 NORDIC BLUETOOTH 5 DEVELOPMENT