Hardware Reference
In-Depth Information
Table 1-1. Specification configurations
Device
BR/EDR (classic Bluetooth) support
BLE (Bluetooth Low Energy) support
Pre-4.0 Bluetooth
Yes
No
4.x Single-Mode (Bluetooth Smart)
No
Yes
4.x Dual-Mode (Bluetooth Smart Ready)
Yes
Yes
As you can see, the Bluetooth Specification (4.0 and above) defines two wireless tech‐
nologies:
BR/EDR (classic Bluetooth)
The wireless standard that has evolved with the Bluetooth Specification since 1.0.
BLE (Bluetooth Low Energy)
The low-power wireless standard introduced with version 4.0 of the specification.
And these are the two device types that be used with these configurations:
Single-mode (BLE, Bluetooth Smart) device
A device that implements BLE, which can communicate with single-mode and dual-
mode devices, but not with devices supporting BR/EDR only.
Dual-mode (BR/EDR/LE, Bluetooth Smart Ready) device
A device that implements both BR/EDR and BLE, which can communicate with
any Bluetooth device.
Figure 1-1
shows the configuration possibilities between available Bluetooth versions
and device types, along with the protocol stacks that allow these devices to communicate
with each other.
Figure 1-1. Configurations between Bluetooth versions and device types
