# API

This section provides the complete API reference for the Qualcomm® sensing hub (QSH). Use these references when developing sensor applications on the application processor or writing sensor drivers and algorithms on the low-power processor.

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</svg> Application processor APIs

Full syntax reference for <cite>getSession()</cite>, <cite>open()</cite>, <cite>close()</cite>, <cite>setCallback()</cite>, <cite>sendRequest()</cite>, feature APIs, and direct channel APIs for high-rate applications such as OIS.

https://docs.qualcomm.com/doc/80-80022-7/topic/qsh_api_reference.html#application-processor-apis

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</svg> Low-power processor APIs

aDSP framework services, utilities, diagnostic interface, and timer APIs for sensor driver and algorithm development. Licensed users only.

https://docs.qualcomm.com/doc/80-80022-7/topic/qsh_api_reference.html#dsp-processor-apis

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</svg> <cite>Sensing hub API guide</cite>

Complete API reference document covering all QSH sensor APIs, proto file definitions, and framework interfaces.

https://docs.qualcomm.com/doc/80-P9361-100

Last Published: May 07, 2026

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