components/log/src/os/log_timestamp.c (ESP-IDF)

/* * SPDX-FileCopyrightText: 2015-2024 Espressif Systems (Shanghai) CO LTD * * SPDX-License-Identifier: Apache-2.0 */ #include "freertos/FreeRTOS.h" #include "freertos/task.h" #include "esp_cpu.h" // for esp_cpu_get_cycle_count() #include "esp_compiler.h" #include "esp_log_timestamp.h" #include "sdkconfig.h" uint32_t esp_log_timestamp(void) { if (unlikely(xTaskGetSchedulerState() == taskSCHEDULER_NOT_STARTED)) { return esp_log_early_timestamp(); } static uint32_t base = 0; if (base == 0 && xPortGetCoreID() == 0) { base = esp_log_early_timestamp(); } TickType_t tick_count = xPortInIsrContext() ? xTaskGetTickCountFromISR() : xTaskGetTickCount(); return base + tick_count * (1000 / configTICK_RATE_HZ); } /* FIXME: define an API for getting the timestamp in soc/hal IDF-2351 */ uint32_t esp_log_early_timestamp(void) { #if CONFIG_IDF_TARGET_ESP32 /* ESP32 ROM stores separate clock rate values for each CPU, but we want the PRO CPU value always */ extern uint32_t g_ticks_per_us_pro; return esp_cpu_get_cycle_count() / (g_ticks_per_us_pro * 1000); #else return esp_cpu_get_cycle_count() / (esp_rom_get_cpu_ticks_per_us() * 1000); #endif }