lora-car/libopencm3/lib/nrf/common/clock_common.c

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/** @addtogroup clock_file CLOCK peripheral API
*
* @brief <b>Access functions for the Clock Controller</b>
*
* @ingroup peripheral_apis
* LGPL License Terms @ref lgpl_license
* @author @htmlonly &copy; @endhtmlonly 2016 Maxim Sloyko <maxims@google.com>
* @author @htmlonly &copy; @endhtmlonly 2021 Eduard Drusa <ventyl86 at netkosice dot sk>
*
*/
/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2017-2018 Unicore MX project<dev(at)lists(dot)unicore-mx(dot)org>
* Copyright (C) 2021 Eduard Drusa <ventyl86(at)netkosice(dot)sk>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include <libopencm3/nrf/clock.h>
#include <libopencm3/nrf/periph.h>
/**@{*/
/** @brief Start Low Frequency Clock
*
* @param[in] wait bool: If true, will busy wait for the clock to start.
*/
void clock_start_lfclk(bool wait)
{
PERIPH_TRIGGER_TASK(CLOCK_TASK_LFCLKSTART);
if (wait) {
while (!(CLOCK_LFCLKSTAT & CLOCK_LFCLKSTAT_STATE));
}
}
/** @brief Stop Low Frequency Clock */
void clock_stop_lfclk()
{
PERIPH_TRIGGER_TASK(CLOCK_TASK_LFCLKSTOP);
}
/** @brief Start High Frequency Crystal Oscillator.
*
* @details Oscillator needs to be running for the radio to work.
*
* @param[in] wait bool If true, will busy wait for the clock to start.
*/
void clock_start_hfclk(bool wait)
{
PERIPH_TRIGGER_TASK(CLOCK_TASK_HFCLKSTART);
if (wait) {
while (!(CLOCK_HFCLKSTAT & CLOCK_HFCLKSTAT_STATE));
}
}
/** @brief Stop High Frequency Crystal Oscillator */
void clock_stop_hfclk()
{
PERIPH_TRIGGER_TASK(CLOCK_TASK_HFCLKSTOP);
}
/** @brief Low Frequency Clock Source.
*
* @param[in] lfclk_src enum clock_lfclk_src
*/
void clock_set_lfclk_src(enum clock_lfclk_src lfclk_src)
{
CLOCK_LFCLKSRC = lfclk_src;
}
/**@}*/