Files
2026-07-13 13:04:25 +08:00

152 lines
4.8 KiB
C

/*
* SPDX-FileCopyrightText: 2015-2026 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#ifndef __ESP_SYSTEM_H__
#define __ESP_SYSTEM_H__
#include <stdint.h>
#include <stdbool.h>
#include "esp_err.h"
#include "esp_attr.h"
#include "esp_bit_defs.h"
#include "esp_idf_version.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief Reset reasons
*/
typedef enum {
ESP_RST_UNKNOWN, //!< Reset reason can not be determined
ESP_RST_POWERON, //!< Reset due to power-on event
ESP_RST_EXT, //!< Reset by external pin (not applicable for ESP32)
ESP_RST_SW, //!< Software reset via esp_restart
ESP_RST_PANIC, //!< Software reset due to exception/panic
ESP_RST_INT_WDT, //!< Reset (software or hardware) due to interrupt watchdog
ESP_RST_TASK_WDT, //!< Reset due to task watchdog
ESP_RST_WDT, //!< Reset due to other watchdogs
ESP_RST_DEEPSLEEP, //!< Reset after exiting deep sleep mode
ESP_RST_BROWNOUT, //!< Brownout reset (software or hardware)
ESP_RST_SDIO, //!< Reset over SDIO
ESP_RST_USB, //!< Reset by USB peripheral
ESP_RST_JTAG, //!< Reset by JTAG
ESP_RST_EFUSE, //!< Reset due to efuse error
ESP_RST_PWR_GLITCH, //!< Reset due to power glitch detected
ESP_RST_CPU_LOCKUP, //!< Reset due to CPU lock up (double exception)
} esp_reset_reason_t;
/**
* Shutdown handler type
*/
typedef void (*shutdown_handler_t)(void);
/**
* @brief Register a shutdown handler
*
* Registers a handler invoked before the application is restarted via
* esp_restart(). The dispatch order between handlers registered through
* this function is unspecified; if a deterministic order is required,
* use ESP_SHUTDOWN_HANDLER_REGISTER instead, which dispatches in priority
* order and runs before any handlers registered here.
*
* The number of registrations is bounded only by available heap.
*
* @param handle Function to execute at shutdown. Must not be NULL.
* @return
* - ESP_OK on success
* - ESP_ERR_INVALID_ARG if `handle` is NULL
* - ESP_ERR_INVALID_STATE if the handler is already registered
* - ESP_ERR_NO_MEM if memory allocation failed
*/
esp_err_t esp_register_shutdown_handler(shutdown_handler_t handle);
/**
* @brief Unregister a shutdown handler
*
* Removes a handler previously registered via esp_register_shutdown_handler().
*
* @param handle The handler to unregister. Must not be NULL.
* @return
* - ESP_OK on success
* - ESP_ERR_INVALID_ARG if `handle` is NULL
* - ESP_ERR_INVALID_STATE if the handler is not currently registered
*/
esp_err_t esp_unregister_shutdown_handler(shutdown_handler_t handle);
/**
* @brief Register a static (link-time) shutdown handler
*
* Handlers registered with this macro are called at shutdown time in
* priority order (lower priority values run first), before any handlers
* registered dynamically via esp_register_shutdown_handler().
*
* @param fn Handler function name (signature: esp_err_t fn(void *user_arg, void *ctx))
* @param prio Priority (lower runs first)
*/
#define ESP_SHUTDOWN_HANDLER_REGISTER(fn, prio) \
static esp_err_t fn(void *user_arg, void *ctx); \
static _SECTION_ATTR_IMPL_GENERIC("esysev_shdn", prio) \
struct { esp_err_t (*handler)(void *user_arg, void *ctx); } _esysev_SHUTDOWN_##fn = { .handler = fn }; \
static esp_err_t fn(void *user_arg, void *ctx)
/**
* @brief Restart PRO and APP CPUs.
*
* This function can be called both from PRO and APP CPUs.
* After successful restart, CPU reset reason will be SW_CPU_RESET.
* Peripherals (except for Wi-Fi, BT, UART0, SPI1, and legacy timers) are not reset.
* This function does not return.
*/
void esp_restart(void) __attribute__((__noreturn__));
/**
* @brief Get reason of last reset
* @return See description of esp_reset_reason_t for explanation of each value.
*/
esp_reset_reason_t esp_reset_reason(void);
/**
* @brief Get the size of available heap.
*
* @note Note that the returned value may be larger than the maximum contiguous block
* which can be allocated.
*
* @return Available heap size, in bytes.
*/
uint32_t esp_get_free_heap_size(void);
/**
* @brief Get the size of available internal heap.
*
* @note Note that the returned value may be larger than the maximum contiguous block
* which can be allocated.
*
* @return Available internal heap size, in bytes.
*/
uint32_t esp_get_free_internal_heap_size(void);
/**
* @brief Get the minimum heap that has ever been available
*
* @return Minimum free heap ever available
*/
uint32_t esp_get_minimum_free_heap_size(void);
/**
* @brief Trigger a software abort
*
* @param details Details that will be displayed during panic handling.
*/
void __attribute__((__noreturn__)) esp_system_abort(const char* details);
#ifdef __cplusplus
}
#endif
#endif /* __ESP_SYSTEM_H__ */