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esp-idf
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components
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esp_system
Martin Vychodil 60386410ae System: fix RTCFAST section alignment %!s(int64=4) %!d(string=hai) anos
..
include 4869b3cd4a WDT: Add support for XTAL32K Watchdog timer %!s(int64=4) %!d(string=hai) anos
ld 60386410ae System: fix RTCFAST section alignment %!s(int64=4) %!d(string=hai) anos
port 3f26866533 System/Security: wrong check of the Memprot feature in esp_restart()/panic_restart() %!s(int64=4) %!d(string=hai) anos
test d730c84038 ci: fix "can set sleep wake stub from stack in RTC RAM" test case failure %!s(int64=4) %!d(string=hai) anos
test_eh_frame_parser 0771bd1711 espsystem: Rearchitecture and fix eh_frame_parser bugs %!s(int64=4) %!d(string=hai) anos
CMakeLists.txt 4869b3cd4a WDT: Add support for XTAL32K Watchdog timer %!s(int64=4) %!d(string=hai) anos
Kconfig fcecbde778 vfs_usb_serial: set secondary selection for making usb port can output under default menu %!s(int64=4) %!d(string=hai) anos
Makefile.projbuild b06dba7823 esp32: move app linker scripts %!s(int64=4) %!d(string=hai) anos
README.md 32aa5f7e25 esp_system: add notes on timekeeping %!s(int64=4) %!d(string=hai) anos
app.lf bbc599493e esp32: move common fragment definitions %!s(int64=4) %!d(string=hai) anos
component.mk d47d413e25 esp_system: fix high level interrupt handler not linked for GNU Make %!s(int64=4) %!d(string=hai) anos
crosscore_int.c 5e3689ae0f esp32h2: update esp_system and esp_hw_support to support esp32h2 %!s(int64=4) %!d(string=hai) anos
dbg_stubs.c 2a5d0a041e gcov: add stub table size entry %!s(int64=4) %!d(string=hai) anos
eh_frame_parser.c 0771bd1711 espsystem: Rearchitecture and fix eh_frame_parser bugs %!s(int64=4) %!d(string=hai) anos
esp_err.c c16ceafa5c esp_common: move esp_err %!s(int64=5) %!d(string=hai) anos
esp_system.c 3f26866533 System/Security: wrong check of the Memprot feature in esp_restart()/panic_restart() %!s(int64=4) %!d(string=hai) anos
fpga_overrides.c 1a626ef6ca esp32: App can boot on FPGA image %!s(int64=4) %!d(string=hai) anos
freertos_hooks.c 0e0914476c esp_common: move freertos hooks %!s(int64=5) %!d(string=hai) anos
int_wdt.c e2fb413329 components/bt: add config option to choose Bluetooth intterupt level. %!s(int64=4) %!d(string=hai) anos
linker.lf 9069f70db3 system: add option to enable undefined behavior sanitizer (UBSAN) %!s(int64=4) %!d(string=hai) anos
panic.c b5606f5e81 esp_system: make the abort operation compatible with clang %!s(int64=4) %!d(string=hai) anos
sdkconfig.rename 5e3689ae0f esp32h2: update esp_system and esp_hw_support to support esp32h2 %!s(int64=4) %!d(string=hai) anos
stack_check.c 6e80811ca2 log: Remove redundant definition of LOG_LOCAL_LEVEL %!s(int64=4) %!d(string=hai) anos
startup.c b748053e2e startup: init timer before calling esp_apptrace_tmo_init %!s(int64=4) %!d(string=hai) anos
system_time.c 5e3689ae0f esp32h2: update esp_system and esp_hw_support to support esp32h2 %!s(int64=4) %!d(string=hai) anos
task_wdt.c b23de0f8a1 twdt: Fix timeout decimal literals to prevent uint32_t overflow %!s(int64=4) %!d(string=hai) anos
ubsan.c 9069f70db3 system: add option to enable undefined behavior sanitizer (UBSAN) %!s(int64=4) %!d(string=hai) anos
xt_wdt.c 4869b3cd4a WDT: Add support for XTAL32K Watchdog timer %!s(int64=4) %!d(string=hai) anos

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.