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76 lines
1.7 KiB
C
76 lines
1.7 KiB
C
/* mbed Microcontroller Library
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* Copyright (c) 2015 ARM Limited
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "lp_ticker_api.h"
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#include "common_rtc.h"
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#include "platform/mbed_critical.h"
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#if DEVICE_LPTICKER
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/* LP ticker is driven by 32kHz clock and counter length is 24 bits. */
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const ticker_info_t* lp_ticker_get_info()
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{
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static const ticker_info_t info = {
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RTC_FREQ,
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RTC_COUNTER_BITS
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};
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return &info;
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}
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void lp_ticker_init(void)
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{
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common_rtc_init();
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}
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void lp_ticker_free(void)
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{
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common_rtc_free();
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}
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uint32_t lp_ticker_read()
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{
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return nrf_rtc_counter_get(COMMON_RTC_INSTANCE);
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}
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void lp_ticker_set_interrupt(timestamp_t timestamp)
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{
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common_rtc_set_interrupt(timestamp,
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LP_TICKER_CC_CHANNEL, LP_TICKER_INT_MASK);
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}
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void lp_ticker_fire_interrupt(void)
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{
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core_util_critical_section_enter();
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lp_ticker_interrupt_fire = true;
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NVIC_SetPendingIRQ(RTC1_IRQn);
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core_util_critical_section_exit();
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}
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void lp_ticker_disable_interrupt(void)
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{
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nrf_rtc_int_disable(COMMON_RTC_INSTANCE, LP_TICKER_INT_MASK);
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}
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void lp_ticker_clear_interrupt(void)
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{
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nrf_rtc_event_clear(COMMON_RTC_INSTANCE, LP_TICKER_EVENT);
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}
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#endif // DEVICE_LPTICKER
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