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esp-idf
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esp_system
Mahavir Jain 81e3eb45ca cpu_start: rename function to add core prefix for more clarity 4 jaren geleden
..
include 4869b3cd4a WDT: Add support for XTAL32K Watchdog timer 4 jaren geleden
ld 881e1b0fd5 deep sleep: add deep sleep support for esp32s3 4 jaren geleden
port 81e3eb45ca cpu_start: rename function to add core prefix for more clarity 4 jaren geleden
test e8188e5d8f ci: replacing old header with new SPDX header style 4 jaren geleden
test_eh_frame_parser 0771bd1711 espsystem: Rearchitecture and fix eh_frame_parser bugs 4 jaren geleden
CMakeLists.txt 4869b3cd4a WDT: Add support for XTAL32K Watchdog timer 4 jaren geleden
Kconfig 9298db641e deep sleep: fix some rtc fast memory definition errors in esp32s3 4 jaren geleden
Makefile.projbuild b06dba7823 esp32: move app linker scripts 4 jaren geleden
README.md 32aa5f7e25 esp_system: add notes on timekeeping 4 jaren geleden
app.lf bbc599493e esp32: move common fragment definitions 4 jaren geleden
component.mk e0d29d4ada esp_system: create ld template to abstract few common settings 4 jaren geleden
crosscore_int.c 5e3689ae0f esp32h2: update esp_system and esp_hw_support to support esp32h2 4 jaren geleden
dbg_stubs.c 2a5d0a041e gcov: add stub table size entry 4 jaren geleden
eh_frame_parser.c 0771bd1711 espsystem: Rearchitecture and fix eh_frame_parser bugs 4 jaren geleden
esp_err.c c16ceafa5c esp_common: move esp_err 5 jaren geleden
esp_system.c c19b37d2a9 esp_system: Adds sync of FRC & RTC counters in esp_restart 4 jaren geleden
fpga_overrides.c 1a626ef6ca esp32: App can boot on FPGA image 4 jaren geleden
freertos_hooks.c 0e0914476c esp_common: move freertos hooks 5 jaren geleden
int_wdt.c e2fb413329 components/bt: add config option to choose Bluetooth intterupt level. 4 jaren geleden
linker.lf 9069f70db3 system: add option to enable undefined behavior sanitizer (UBSAN) 4 jaren geleden
panic.c b5606f5e81 esp_system: make the abort operation compatible with clang 4 jaren geleden
sdkconfig.rename 5e3689ae0f esp32h2: update esp_system and esp_hw_support to support esp32h2 4 jaren geleden
stack_check.c 6e80811ca2 log: Remove redundant definition of LOG_LOCAL_LEVEL 4 jaren geleden
startup.c a939f7d34b light sleep: add software workaround for esp32s3 gpio reset issue 4 jaren geleden
system_time.c 5e3689ae0f esp32h2: update esp_system and esp_hw_support to support esp32h2 4 jaren geleden
task_wdt.c b23de0f8a1 twdt: Fix timeout decimal literals to prevent uint32_t overflow 4 jaren geleden
ubsan.c 9069f70db3 system: add option to enable undefined behavior sanitizer (UBSAN) 4 jaren geleden
xt_wdt.c 4869b3cd4a WDT: Add support for XTAL32K Watchdog timer 4 jaren geleden

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.