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>
117 lines
2.7 KiB
C
117 lines
2.7 KiB
C
/** @addtogroup rtc_file RTC peripheral API
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*
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* @brief <b>Access functions for the Real Time Counter 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
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* Maxim Sloyko <maxims@google.com>
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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/rtc.h>
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/**@{*/
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/** @brief RTC set Prescaler value.
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*
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* @details The clock needs to be stopped for this to have any effect.
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*
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* @param[in] rtc uint32_t RTC base
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* @param[in] presc uint16_t 12 bit prescaler value.
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*/
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void rtc_set_prescaler(uint32_t rtc, uint16_t presc)
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{
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RTC_PRESCALER(rtc) = presc & 0xfff;
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}
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/** @brief RTC get Counter value.
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*
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* @param[in] rtc uint32_t RTC base
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*/
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uint32_t rtc_get_counter(uint32_t rtc)
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{
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return RTC_COUNTER(rtc);
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}
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/** @brief Enable events
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*
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* @param[in] rtc uint32_t RTC base
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* @param[in] mask uint32_t which events to enable
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*/
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void rtc_enable_events(uint32_t rtc, uint32_t mask)
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{
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RTC_EVTENSET(rtc) = mask;
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}
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/** @brief Disable events
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*
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* @param[in] rtc uint32_t RTC base
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* @param[in] mask uint32_t which events to disable
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*/
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void rtc_disable_events(uint32_t rtc, uint32_t mask)
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{
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RTC_EVTENCLR(rtc) = mask;
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}
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/** @brief Start the RTC
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*
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* @param[in] rtc uint32_t RTC base
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*/
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void rtc_start(uint32_t rtc)
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{
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PERIPH_TRIGGER_TASK(RTC_TASK_START(rtc));
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}
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/** @brief Stop the RTC
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*
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* @param[in] rtc uint32_t RTC base
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*/
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void rtc_stop(uint32_t rtc)
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{
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PERIPH_TRIGGER_TASK(RTC_TASK_STOP(rtc));
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}
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/** @brief Clear the RTC
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*
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* @param[in] rtc uint32_t RTC base
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*/
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void rtc_clear(uint32_t rtc)
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{
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PERIPH_TRIGGER_TASK(RTC_TASK_CLEAR(rtc));
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}
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/** @brief Set compare register
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*
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* @param[in] rtc uint32_t RTC base
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* @param[in] cmp uint8_t compare number (0-3)
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* @param[in] value uint32_t compare value
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*/
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void rtc_set_compare(uint32_t rtc, uint8_t cmp, uint32_t value)
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{
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if (cmp < 4) {
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RTC_CC(rtc, cmp) = value;
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}
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}
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/**@}*/
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