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esp-idf/components/esp_system
History
Song Ruo Jing ad55230b0a ledc: Add support for esp32h2; Refactor ledc driver clock source selection related code 
LEDC examples and test cases are supported on ESP32H2.
   Switch to use general clock IDs for ledc_clk_cfg_t enum values.
   Deprecate LEDC_USE_RTC8M_CLK.
2023-01-30 19:19:34 +08:00
..
host_test/test_esp_system test: migrate linux target host test jobs into pytest-embedded 2023-01-16 10:25:55 +08:00
include wdt: add support for WDTs on C6 2023-01-19 12:58:26 +08:00
ld ld: fix rtc.data rtc.bss section issues 2023-01-10 17:03:54 +08:00
port BOD: Bringup for ESP32C6 2023-01-10 10:37:30 +08:00
task_wdt esp_timer: add a function to restart timer 2022-10-18 04:42:27 +00:00
test wdt: add support for WDTs on C6 2023-01-19 12:58:26 +08:00
test_apps ledc: Add support for esp32h2; Refactor ledc driver clock source selection related code 2023-01-30 19:19:34 +08:00
test_eh_frame_parser esp_hw_support/esp_system: Re-evaluate header inclusions and include directories 2022-03-07 11:18:08 +05:30
.build-test-rules.yml ci: Make consistence between pytest_*.py and .build-test-rules.yml for esp32c6 (i.e. to pass check_test_scripts_build_test_rules.py) 2022-11-28 11:58:30 +08:00
app.lf esp32: move common fragment definitions 2021-03-31 19:17:33 +08:00
check_system_init_priorities.py esp_system: add a script to check the startup priorities 2022-07-12 16:58:14 +02:00
CMakeLists.txt systimer: support etm event 2022-11-23 15:32:34 +08:00
crosscore_int.c ESP32H2: Add system support for ESP32H2 2022-12-07 11:38:51 +08:00
debug_stubs.c debug_stubs: Refactor and add support for RISCV 2021-11-04 01:33:24 +03:00
eh_frame_parser.c esp_hw_support/esp_system: Re-evaluate header inclusions and include directories 2022-03-07 11:18:08 +05:30
esp_err.c esp_system: fix address printed by ESP_ERROR_CHECK 2022-07-12 17:01:47 +02:00
esp_ipc.c esp_ipc: Use task notifications instead of semaphores 2023-01-10 05:11:31 +08:00
esp_system.c feat(esp_system): Partially buildable on Linux now 2022-11-16 09:03:09 +01:00
fpga_overrides.c ESP32H2: Add system support for ESP32H2 2022-12-07 11:38:51 +08:00
freertos_hooks.c hal: Deprecate interrupt_controller_hal.h, cpu_hal.h and cpu_ll.h interfaces 2022-07-22 00:06:06 +08:00
int_wdt.c WDT: implement interrupt wdt and task wdt for ESP32-C2 2022-09-15 14:37:59 +08:00
Kconfig refactor(esp_system): reboot delay: added docs, protected by watchdog 2022-12-20 15:51:00 +08:00
linker.lf feat(esp_system): Partially buildable on Linux now 2022-11-16 09:03:09 +01:00
panic.c refactor(esp_system): reboot delay: added docs, protected by watchdog 2022-12-20 15:51:00 +08:00
README.md esp_system: add notes on timekeeping 2021-03-25 16:09:33 +08:00
sdkconfig.rename TWDT: the Kconfig option ESP_TASK_WDT_EN is now used to enable Task Watchdog 2022-09-15 14:37:59 +08:00
sdkconfig.rename.esp32 kconfig: move remaining kconfig options out of target component 2022-05-23 17:57:45 +08:00
sdkconfig.rename.esp32c3 soc: moved kconfig options out of the target component. 2022-04-21 12:09:43 +08:00
sdkconfig.rename.esp32s2 soc: moved kconfig options out of the target component. 2022-04-21 12:09:43 +08:00
sdkconfig.rename.esp32s3 soc: moved kconfig options out of the target component. 2022-04-21 12:09:43 +08:00
stack_check.c esp_system: fix placement of __stack_chk_fail from flash to RAM 2022-12-07 08:49:12 +01:00
startup.c ESP32H2: Add system support for ESP32H2 2022-12-07 11:38:51 +08:00
system_init_fn.txt esp_system: usb_console: fix restart when Wi-Fi is working 2022-07-28 17:15:03 +02:00
system_time.c ESP32H2: Add system support for ESP32H2 2022-12-07 11:38:51 +08:00
systick_etm.c systimer: assign counter and alarm in esp_hw_support 2023-01-10 17:05:49 +08:00
ubsan.c hal: Deprecate interrupt_controller_hal.h, cpu_hal.h and cpu_ll.h interfaces 2022-07-22 00:06:06 +08:00
xt_wdt.c bugfix (esp_system): made xt_wdt spinlock static 2022-07-22 08:17:59 +00:00

README.md

System Notes

Timekeeping

The following are the timekeeping mechanisms available and their differences:

  1. System time (esp_system_get_time)

Time with the origin at g_startup_time. The implementation is not handled by esp_system, but it does provide a default implementation using RTC timer. Currently, esp_timer provides system time, since the hardware timers are under the control of that component. However, no matter the underlying timer, the system time provider should maintain the definition of having the origin point at g_startup_time.

  1. esp_timer time (esp_timer_get_time)

This is the time read from an underlying hardware timer, controlled through config. Origin is at the point where the underlying timer starts counting.

  1. newlib time (gettimeofday)

Timekeeping function in standard library. Can be set (settimeofday) or moved forward/backward (adjtime); with the possibility of the changes being made persistent through config. Currently implemented in terms of system time, as the point of origin is fixed. If persistence is enabled, RTC time is also used in conjuction with system time.

  1. RTC time (esp_rtc_get_time_us)

Time read from RTC timer.