mirror of
https://github.com/espressif/esp-idf.git
synced 2024-10-05 20:47:46 -04:00
30d12af191
This refactoring brings a private API for the TWDT implementation, which can now use a hardware timer (Timer Group) or a software timer (esp_timer)
90 lines
2.4 KiB
C
90 lines
2.4 KiB
C
/*
|
|
* SPDX-FileCopyrightText: 2018-2022 Espressif Systems (Shanghai) CO LTD
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
#include "esp_system.h"
|
|
#include "soc/soc_caps.h"
|
|
|
|
#if SOC_TIMER_GROUPS >= 2
|
|
|
|
/* All the targets that have more than one timer group are using
|
|
* APB clock by default, which frequency is 80MHz.
|
|
* Thus, we can determine the default parameter for the prescaler here */
|
|
#define MWDT0_TICK_PRESCALER 40000
|
|
#define MWDT0_TICKS_PER_US 500
|
|
#define MWDT1_TICK_PRESCALER 40000
|
|
#define MWDT1_TICKS_PER_US 500
|
|
|
|
#else
|
|
|
|
/* The targets that have a single timer group use a 40MHz clock for the
|
|
* Timer Group 0. Let's adapt the prescaler value accordingly.
|
|
*/
|
|
#define MWDT0_TICK_PRESCALER 20000
|
|
#define MWDT0_TICKS_PER_US 500
|
|
|
|
#endif
|
|
|
|
/**
|
|
* @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 g_startup_time; definition should be fixed by system time provider
|
|
* no matter the underlying timer used.
|
|
*/
|
|
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
|