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esp-idf
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esp_system
Alexey Gerenkov bb9cd84cdc debug_stubs: Refactor and add support for RISCV 4 rokov pred
..
include 4869b3cd4a WDT: Add support for XTAL32K Watchdog timer 4 rokov pred
ld 881e1b0fd5 deep sleep: add deep sleep support for esp32s3 4 rokov pred
port bb9cd84cdc debug_stubs: Refactor and add support for RISCV 4 rokov pred
test d6f2fa4bab freertos: Remove critical nested macros 4 rokov pred
test_eh_frame_parser 0771bd1711 espsystem: Rearchitecture and fix eh_frame_parser bugs 4 rokov pred
CMakeLists.txt bb9cd84cdc debug_stubs: Refactor and add support for RISCV 4 rokov pred
Kconfig bb9cd84cdc debug_stubs: Refactor and add support for RISCV 4 rokov pred
Makefile.projbuild b06dba7823 esp32: move app linker scripts 4 rokov pred
README.md 32aa5f7e25 esp_system: add notes on timekeeping 4 rokov pred
app.lf bbc599493e esp32: move common fragment definitions 4 rokov pred
component.mk 265038bea3 esp_system: fix high level interrupt handler not linked for GNU Make 4 rokov pred
crosscore_int.c 5e3689ae0f esp32h2: update esp_system and esp_hw_support to support esp32h2 4 rokov pred
debug_stubs.c bb9cd84cdc debug_stubs: Refactor and add support for RISCV 4 rokov pred
eh_frame_parser.c 0771bd1711 espsystem: Rearchitecture and fix eh_frame_parser bugs 4 rokov pred
esp_err.c c16ceafa5c esp_common: move esp_err 4 rokov pred
esp_system.c dffb92e45f System/Security: wrong check of the Memprot feature in esp_restart()/panic_restart() 4 rokov pred
fpga_overrides.c 1a626ef6ca esp32: App can boot on FPGA image 4 rokov pred
freertos_hooks.c 0e0914476c esp_common: move freertos hooks 4 rokov pred
int_wdt.c e2275b1f63 gptimer: clean up hal and ll for driver-ng 4 rokov pred
linker.lf 9069f70db3 system: add option to enable undefined behavior sanitizer (UBSAN) 4 rokov pred
panic.c b5606f5e81 esp_system: make the abort operation compatible with clang 4 rokov pred
sdkconfig.rename 5e3689ae0f esp32h2: update esp_system and esp_hw_support to support esp32h2 4 rokov pred
stack_check.c 6e80811ca2 log: Remove redundant definition of LOG_LOCAL_LEVEL 4 rokov pred
startup.c adfb7bed96 vfs_usb_serial: set secondary selection for making usb port can output under default menu 4 rokov pred
system_time.c 5e3689ae0f esp32h2: update esp_system and esp_hw_support to support esp32h2 4 rokov pred
task_wdt.c e2275b1f63 gptimer: clean up hal and ll for driver-ng 4 rokov pred
ubsan.c 9069f70db3 system: add option to enable undefined behavior sanitizer (UBSAN) 4 rokov pred
xt_wdt.c 4869b3cd4a WDT: Add support for XTAL32K Watchdog timer 4 rokov pred

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.