kopia lustrzana https://github.com/espressif/esp-idf
70 wiersze
1.8 KiB
C
70 wiersze
1.8 KiB
C
/*
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* SPDX-FileCopyrightText: 2017-2022 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#pragma once
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/**
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* @file esp_private/esp_timer_private.h
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*
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* @brief Interface between common and platform-specific parts of esp_timer.
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*
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* The functions in this header file are implemented for each supported SoC.
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* High level functions defined in esp_timer.c call the functions here to
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* interact with the hardware.
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*
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* Note: The functions from this file are marked as private and are used exclusively
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* inside the IDF in the power management and sleep files.
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*/
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#include <stdint.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @brief Notify esp_timer implementation that APB frequency has changed
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*
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* Called by the frequency switching code.
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*
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* @param apb_ticks_per_us new number of APB clock ticks per microsecond
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*/
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void esp_timer_private_update_apb_freq(uint32_t apb_ticks_per_us);
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/**
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* @brief Set esp_timer time to a certain value
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*
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* Called from light sleep code to synchronize esp_timer time with RTC time.
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*
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* @param new_us the value to be set to esp_timer time, in microseconds
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*/
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void esp_timer_private_set(uint64_t new_us);
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/**
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* @brief Adjust current esp_timer time by a certain value
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*
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* @param time_diff_us adjustment to apply to esp_timer time, in microseconds
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*/
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void esp_timer_private_advance(int64_t time_diff_us);
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/**
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* @brief obtain internal critical section used in the esp_timer implementation
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* This can be used when a sequence of calls to esp_timer has to be made,
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* and it is necessary that the state of the timer is consistent between
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* the calls. Should be treated in the same way as a spinlock.
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* Call esp_timer_private_unlock to release the lock
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*/
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void esp_timer_private_lock(void);
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/**
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* @brief counterpart of esp_timer_lock
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*/
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void esp_timer_private_unlock(void);
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#ifdef __cplusplus
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}
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#endif
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