nRF51 Software Development Kit 9.0.0

The nRF51 Software Development Kit (SDK) enables Bluetooth® low energy, ANT, and 2.4 GHz proprietary product development with Nordic Semiconductor's advanced nRF51 series System on Chip (SoC) devices.

SDK documentation
The SDK documentation is available in Nordic Semiconductor's Infocenter.
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S110 SoftDevice API documentation
Bluetooth® low energy Peripheral/Broadcaster protocol stack.
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S120 SoftDevice API documentation
Bluetooth low energy Central protocol stack solution supporting up to eight simultaneous Central role connections.
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S130 SoftDevice API documentation
Bluetooth® low energy Peripheral and Central protocol stack supporting up to three central and one peripheral simultaneous connections.
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S210 SoftDevice API documentation
ANT protocol stack.
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S310 SoftDevice API documentation
Combined ANT and Bluetooth low energy protocol stack.
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User guides for Gazell and Enhanced ShockBurst
Proprietary 2.4 GHz protocol.
The examples have been grouped with S110 documentation but will work with any SoftDevice.

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