213a6b4244
* merged: nrf tree from unicore-mx * fixed: small changes to make merged code play with rest of locm3 again * added: linker script generator defines for nRF51/52 stubs * added: doxygen support This removes code and changes names and styles where relevant to be more inline with normal libopencm3. NRF52x library is built for hardfloat, M4F by default. The M4 no float variants are less common, and if needed, the library can be built manually for those variants. Unless some very common boards show up using those parts, we don't need an extra library build. Reviewed-by: Karl Palsson <karlp@tweak.net.au> Tested-by: Karl Palsson <karlp@tweak.net.au>
84 lines
2.3 KiB
C
84 lines
2.3 KiB
C
/** @addtogroup clock_file CLOCK peripheral API
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*
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* @brief <b>Access functions for the Clock Controller</b>
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*
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* @ingroup peripheral_apis
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* LGPL License Terms @ref lgpl_license
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* @author @htmlonly © @endhtmlonly 2016 Maxim Sloyko <maxims@google.com>
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* @author @htmlonly © @endhtmlonly 2021 Eduard Drusa <ventyl86 at netkosice dot sk>
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*
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*/
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/*
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* This file is part of the libopencm3 project.
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*
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* Copyright (C) 2017-2018 Unicore MX project<dev(at)lists(dot)unicore-mx(dot)org>
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* Copyright (C) 2021 Eduard Drusa <ventyl86(at)netkosice(dot)sk>
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*
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* This library is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <libopencm3/nrf/clock.h>
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#include <libopencm3/nrf/periph.h>
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/**@{*/
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/** @brief Start Low Frequency Clock
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*
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* @param[in] wait bool: If true, will busy wait for the clock to start.
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*/
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void clock_start_lfclk(bool wait)
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{
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PERIPH_TRIGGER_TASK(CLOCK_TASK_LFCLKSTART);
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if (wait) {
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while (!(CLOCK_LFCLKSTAT & CLOCK_LFCLKSTAT_STATE));
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}
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}
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/** @brief Stop Low Frequency Clock */
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void clock_stop_lfclk()
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{
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PERIPH_TRIGGER_TASK(CLOCK_TASK_LFCLKSTOP);
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}
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/** @brief Start High Frequency Crystal Oscillator.
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*
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* @details Oscillator needs to be running for the radio to work.
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*
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* @param[in] wait bool If true, will busy wait for the clock to start.
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*/
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void clock_start_hfclk(bool wait)
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{
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PERIPH_TRIGGER_TASK(CLOCK_TASK_HFCLKSTART);
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if (wait) {
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while (!(CLOCK_HFCLKSTAT & CLOCK_HFCLKSTAT_STATE));
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}
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}
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/** @brief Stop High Frequency Crystal Oscillator */
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void clock_stop_hfclk()
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{
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PERIPH_TRIGGER_TASK(CLOCK_TASK_HFCLKSTOP);
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}
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/** @brief Low Frequency Clock Source.
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*
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* @param[in] lfclk_src enum clock_lfclk_src
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*/
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void clock_set_lfclk_src(enum clock_lfclk_src lfclk_src)
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{
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CLOCK_LFCLKSRC = lfclk_src;
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}
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/**@}*/
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