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esp-idf
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components
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esp_system
Song Ruo Jing 8486a2c3ad Merge branch 'bugfix/revert_rtc_clock_bbpll_power_on_with_usb' into 'master' пре 2 година
..
host_test b02687a6c4 test: migrate linux target host test jobs into pytest-embedded пре 3 година
include 5d26a0de9a wdt: add support for H2 пре 2 година
ld 06e7c02da7 esp_mm: h2 support пре 3 година
port 8486a2c3ad Merge branch 'bugfix/revert_rtc_clock_bbpll_power_on_with_usb' into 'master' пре 2 година
task_wdt 5d26a0de9a wdt: add support for H2 пре 2 година
test c2f9392be5 Merge branch 'feature/h2_wdt' into 'master' пре 2 година
test_apps 5e5343d429 TWDT: Use the new TWDT Kconfig options in the examples and tests пре 2 година
test_eh_frame_parser a9fda54d39 esp_hw_support/esp_system: Re-evaluate header inclusions and include directories пре 3 година
.build-test-rules.yml 13b5e625a7 UT/esp32c2: reenable pm and sleep related UT пре 3 година
CMakeLists.txt 38316b38b5 esp_wifi: move coex part from esp_wifi to esp_coex пре 2 година
Kconfig 1a66459b44 usb_serial_jtag: Improve the code for the issue of usb cdc device unable to work during sleep пре 2 година
README.md 32aa5f7e25 esp_system: add notes on timekeeping пре 4 година
app.lf bbc599493e esp32: move common fragment definitions пре 4 година
check_system_init_priorities.py 42654927d5 esp_system: add a script to check the startup priorities пре 3 година
crosscore_int.c 8cc9260f86 ESP32H2: Add system support for ESP32H2 пре 3 година
debug_stubs.c 49af663dfb esp_system: fix gcc-12 compile errors пре 2 година
eh_frame_parser.c a9fda54d39 esp_hw_support/esp_system: Re-evaluate header inclusions and include directories пре 3 година
esp_err.c 44df5b31af feature: add ram loadable app support пре 3 година
esp_ipc.c 23a290f29f esp_ipc: Use task notifications instead of semaphores пре 3 година
esp_system.c 5b3a645813 feat(esp_system): Partially buildable on Linux now пре 3 година
fpga_overrides.c 59cf87fe7d pmu: sleep initialization and sleep start support for esp32c6 пре 3 година
freertos_hooks.c 6005cc9163 hal: Deprecate interrupt_controller_hal.h, cpu_hal.h and cpu_ll.h interfaces пре 3 година
int_wdt.c 5d26a0de9a wdt: add support for H2 пре 2 година
linker.lf 5b3a645813 feat(esp_system): Partially buildable on Linux now пре 3 година
panic.c c2f9392be5 Merge branch 'feature/h2_wdt' into 'master' пре 2 година
sdkconfig.rename 5e5343d429 TWDT: Use the new TWDT Kconfig options in the examples and tests пре 2 година
sdkconfig.rename.esp32 0687daf2c8 kconfig: move remaining kconfig options out of target component пре 3 година
sdkconfig.rename.esp32c3 d2872095f9 soc: moved kconfig options out of the target component. пре 3 година
sdkconfig.rename.esp32s2 d2872095f9 soc: moved kconfig options out of the target component. пре 3 година
sdkconfig.rename.esp32s3 d2872095f9 soc: moved kconfig options out of the target component. пре 3 година
stack_check.c 4d16f46a88 esp_system: fix placement of __stack_chk_fail from flash to RAM пре 3 година
startup.c 9c37441b17 wdt: refactor wdt codes to use unified type пре 2 година
system_init_fn.txt 1a66459b44 usb_serial_jtag: Improve the code for the issue of usb cdc device unable to work during sleep пре 2 година
system_time.c 8cc9260f86 ESP32H2: Add system support for ESP32H2 пре 3 година
systick_etm.c 6c1d98d556 systimer: assign counter and alarm in esp_hw_support пре 3 година
ubsan.c 6005cc9163 hal: Deprecate interrupt_controller_hal.h, cpu_hal.h and cpu_ll.h interfaces пре 3 година
xt_wdt.c bff6826ee1 bugfix (esp_system): made xt_wdt spinlock static пре 3 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.