esp-idf/components/esp_common/include/esp_private/system_internal.h
KonstantinKondrashov 7ae7adf16a newlib: Fix clock_getres() improves accuracy
Returns not rounded value of resolution for WITH_RTC and !WITH_FRC
2020-10-07 18:01:35 +08:00

82 lines
2.3 KiB
C

// Copyright 2018 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#pragma once
#ifdef __cplusplus
extern "C" {
#endif
#include "esp_system.h"
#define MWDT0_TICK_PRESCALER 40000
#define MWDT0_TICKS_PER_US 500
#define MWDT1_TICK_PRESCALER 40000
#define MWDT1_TICKS_PER_US 500
/**
* @brief Internal function to restart PRO and APP CPUs.
*
* @note This function should not be called from FreeRTOS applications.
* Use esp_restart instead.
*
* This is an internal function called by esp_restart. It is called directly
* by the panic handler and brownout detector interrupt.
*/
void esp_restart_noos(void) __attribute__ ((noreturn));
/**
* @brief Similar to esp_restart_noos, but resets all the digital peripherals.
*/
void esp_restart_noos_dig(void) __attribute__ ((noreturn));
/**
* @brief Internal function to set reset reason hint
*
* The hint is used do distinguish different reset reasons when software reset
* is performed.
*
* The hint is stored in RTC store register, RTC_RESET_CAUSE_REG.
*
* @param hint Desired esp_reset_reason_t value for the real reset reason
*/
void esp_reset_reason_set_hint(esp_reset_reason_t hint);
/**
* @brief Internal function to get the reset hint value
* @return - Reset hint value previously stored into RTC_RESET_CAUSE_REG using
* esp_reset_reason_set_hint function
* - ESP_RST_UNKNOWN if the value in RTC_RESET_CAUSE_REG is invalid
*/
esp_reset_reason_t esp_reset_reason_get_hint(void);
/**
* @brief Get the time in microseconds since startup
*
* @returns time since startup in microseconds
*/
int64_t esp_system_get_time(void);
/**
* @brief Get the resolution of the time returned by `esp_system_get_time`.
*
* @returns the resolution in nanoseconds
*/
uint32_t esp_system_get_time_resolution(void);
#ifdef __cplusplus
}
#endif