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102 lines
3.7 KiB
C
102 lines
3.7 KiB
C
/*
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* Copyright (c) 2015, Texas Instruments Incorporated - http://www.ti.com/
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the copyright holder nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*---------------------------------------------------------------------------*/
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/**
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* \addtogroup cc26xx
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* @{
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*
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* \defgroup cc26xx-oscillators CC26XX oscillator control
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*
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* Wrapper around those CC26xxware OSC functions that we need in Contiki.
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*
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* All CC26xxware OSC control requires access to the semaphore module within
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* AUX. Thus, in addition to enabling the oscillator interface, we need to
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* start the clock to SMPH and restore it to its previous state when we are
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* done.
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* @{
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*
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* \file
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* Header file for the CC26XX oscillator control
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*/
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/*---------------------------------------------------------------------------*/
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#ifndef OSCILLATORS_H_
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#define OSCILLATORS_H_
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/*---------------------------------------------------------------------------*/
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/**
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* \brief Set the LF clock source to be the LF XOSC
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*
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* This function is only called once as soon as the system starts.
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*
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* Do not switch the LF clock source to the RC OSC for normal system operation
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* See CC26xx Errata (swrz058)
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*/
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void oscillators_select_lf_xosc(void);
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/**
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* \brief Set the LF clock source to be the LF RCOSC
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*
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* This function is only called once, when the systen transitions to a full
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* shutdown
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*
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* Do not switch the LF clock source to the RC OSC for normal system operation
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* See CC26xx Errata (swrz058)
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*/
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void oscillators_select_lf_rcosc(void);
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/**
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* \brief Requests the HF XOSC as the source for the HF clock, but does not
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* perform the actual switch.
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*
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* This triggers the startup sequence of the HF XOSC and returns so the CPU
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* can perform other tasks while the XOSC is starting.
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*
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* The XOSC is requested as the source for the HF as well as the MF clock.
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*/
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void oscillators_request_hf_xosc(void);
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/**
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* \brief Performs the switch to the XOSC
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*
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* This function must be preceded by a call to oscillators_request_hf_xosc()
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*/
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void oscillators_switch_to_hf_xosc(void);
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/**
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* \brief Switches MF and HF clock source to be the HF RC OSC
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*/
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void oscillators_switch_to_hf_rc(void);
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/*---------------------------------------------------------------------------*/
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#endif /* OSCILLATORS_H_ */
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/*---------------------------------------------------------------------------*/
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/**
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* @}
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* @}
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*/
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