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Windows CE Library - System Clocks Library (FREQLib)


Article updated at 28 Oct 2017
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Attention: this is a legacy library and thus not supported by Toradex anymore. We recommend that you use the new libraries for all Toradex modules. Please see the Toradex CE Libraries and Code Samples for up-to-date information.


This library manages system clock settings.

Current Version


Application Notes

FREQLib allows for the setting and querying of various clock speeds on PXA and Tegra.

FREQLib also allows for the core voltage to be set on PXA270.

Library API

Click here for the library API

Other Resources

Windows CE Libraries Overview

Revision History

Date Rev Change Notes
29/06/2015 V2.3 Internal modification to evaluate an error condition.
09/07/2014 V2.2 Added function TegFrq_Boost()
This function allows to dynamically set the minimum required system frequencies
11/03/2014 V2.1 Fixed calculation of system frequencies (affected Colibri PXA modules only)
23/09/2013 V2.0.1 Change default SDK to Colibri600
12/08/2013 V2.0 Added functionality to get and set system clocks for Tegra processors