When MCU has Bluetooth salve module, it can
communicate with Bluetooth adapter of computer and
smart phones.
2. The Bluetooth devices in the market mostly are salve
devices, such as Bluetooth printer, Bluetooth GPS. So
, we can use master module to make pair and
communicate with them.
3. Bluetooth serial module’s operation doesn’t need
drive, and can communicate with the other Bluetooth
device. But communication between two Bluetooth
module require at two conditions: