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esp-idf
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components
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esp_system
Marius Vikhammer 85b107bf54 Merge branch 'bugfix/rename_ext_mem_bss_section' into 'master' пре 4 година
..
include 0771bd1711 espsystem: Rearchitecture and fix eh_frame_parser bugs пре 4 година
ld 85b107bf54 Merge branch 'bugfix/rename_ext_mem_bss_section' into 'master' пре 4 година
port 6e1f8a68b9 Merge branch 'feature/support_esp32s3_wifi_lightsleep' into 'master' пре 4 година
test fddc0b6799 esp32: move remaining tests пре 4 година
test_eh_frame_parser 0771bd1711 espsystem: Rearchitecture and fix eh_frame_parser bugs пре 4 година
CMakeLists.txt 4972605b16 esp_common: Add API for IPC to run small pieces of code on the other CPU, in the context of the level 4 interrupt пре 4 година
Kconfig 4972605b16 esp_common: Add API for IPC to run small pieces of code on the other CPU, in the context of the level 4 interrupt пре 4 година
Makefile.projbuild b06dba7823 esp32: move app linker scripts пре 4 година
README.md 32aa5f7e25 esp_system: add notes on timekeeping пре 4 година
app.lf bbc599493e esp32: move common fragment definitions пре 4 година
component.mk b06dba7823 esp32: move app linker scripts пре 4 година
crosscore_int.c 5e3689ae0f esp32h2: update esp_system and esp_hw_support to support esp32h2 пре 4 година
dbg_stubs.c 6e80811ca2 log: Remove redundant definition of LOG_LOCAL_LEVEL пре 4 година
eh_frame_parser.c 0771bd1711 espsystem: Rearchitecture and fix eh_frame_parser bugs пре 4 година
esp_err.c c16ceafa5c esp_common: move esp_err пре 5 година
esp_system.c c19b37d2a9 esp_system: Adds sync of FRC & RTC counters in esp_restart пре 4 година
fpga_overrides.c 1a626ef6ca esp32: App can boot on FPGA image пре 4 година
freertos_hooks.c 0e0914476c esp_common: move freertos hooks пре 5 година
int_wdt.c deaad431f4 esp_common: move task, int wdt пре 5 година
linker.lf 9069f70db3 system: add option to enable undefined behavior sanitizer (UBSAN) пре 4 година
panic.c 6582f7070e Update tests for assert and abort пре 4 година
sdkconfig.rename 5e3689ae0f esp32h2: update esp_system and esp_hw_support to support esp32h2 пре 4 година
stack_check.c 6e80811ca2 log: Remove redundant definition of LOG_LOCAL_LEVEL пре 4 година
startup.c c1ca7a35b0 ldgen: Remove some remaining references to TARGET.project.ld.in пре 4 година
system_time.c 5e3689ae0f esp32h2: update esp_system and esp_hw_support to support esp32h2 пре 4 година
task_wdt.c 5e3689ae0f esp32h2: update esp_system and esp_hw_support to support esp32h2 пре 4 година
ubsan.c 9069f70db3 system: add option to enable undefined behavior sanitizer (UBSAN) пре 4 година

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.