components/log/include/esp_log_timestamp.h (ESP-IDF)

/* * SPDX-FileCopyrightText: 2015-2024 Espressif Systems (Shanghai) CO LTD * * SPDX-License-Identifier: Apache-2.0 */ #pragma once #include <stdint.h> #ifdef __cplusplus extern "C" { #endif /** * @brief Function which returns timestamp to be used in log output * * This function is used in expansion of ESP_LOGx macros. * In the 2nd stage bootloader, and at early application startup stage * this function uses CPU cycle counter as time source. Later when * FreeRTOS scheduler start running, it switches to FreeRTOS tick count. * * For now, we ignore millisecond counter overflow. * * @return timestamp, in milliseconds */ uint32_t esp_log_timestamp(void); /** * @brief Function which returns system timestamp to be used in log output * * This function is used in expansion of ESP_LOGx macros to print * the system time as "HH:MM:SS.sss". The system time is initialized to * 0 on startup, this can be set to the correct time with an SNTP sync, * or manually with standard POSIX time functions. * * Currently, this will not get used in logging from binary blobs * (i.e. Wi-Fi & Bluetooth libraries), these will still print the RTOS tick time. * * @return timestamp, in "HH:MM:SS.sss" */ char* esp_log_system_timestamp(void); /** * @brief Function which returns timestamp to be used in log output * * This function uses HW cycle counter and does not depend on OS, * so it can be safely used after application crash. * * @return timestamp, in milliseconds */ uint32_t esp_log_early_timestamp(void); #ifdef __cplusplus } #endif