Searching Bluetooth devices

To search for Bluetooth devices, you need some APIs. BlueZ exposes socket APIs that are similar to network socket programming. If you are familiar with network programming in Linux, learning the BlueZ APIs will be simple.

The basic data structure used to specify a 6-byte Bluetooth device address is bdaddr_t. In BlueZ, every Bluetooth address is stored as the bdaddr_t structure (see Figure 7).

BlueZ provides two functions to convert between the string and the bdaddr_t structure: