S120 SoftDevice

The S120 SoftDevice is a Bluetooth® low energy (BLE) combined Central and Peripheral protocol stack solution, which means that the SoftDevice can be initialized to run either as a Central protocol stack or as a Peripheral protocol stack. When initialized as a Central, it supports up to eight simultaneous Central role connections and an Observer. When initialized as a Peripheral, is supports a Peripheral connection and a concurrent Broadcaster. The SoftDevice integrates a low energy controller and host, and provides a full and flexible Application Programming Interface (API) for building Bluetooth low energy System on Chip (SoC) solutions.

S120 SoftDevice Specification

S120 SoftDevice Specification v2.1
S120 SoftDevice Specification v2.0
S120 SoftDevice Specification v1.1
S120 SoftDevice Specification v1.0

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