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esp-idf
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components
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esp_system
Song Ruo Jing be0fdfa176 soc: Add a soc cap, SOC_CLK_RC_FAST_D256_SUPPORTED, for whether the target has the RC_FAST_D256 clock 3 vuotta sitten
..
include 8c17b04cef lwip:bugfix for increase ping task stack size 3 vuotta sitten
ld ab09c07fdd esp32c6: add esp_system support 3 vuotta sitten
port 526a9c665a backup dma: force clear reset signal to fix the backup dma operation failure caused by RTC_SW_CPU_RST 3 vuotta sitten
task_wdt c8614a0dbf esp_timer: add a function to restart timer 3 vuotta sitten
test 0c97fbd5ba riscv: Remove redundant riscv_interrupts.h header 3 vuotta sitten
test_apps c0568611dd docs: changes docs supported targets tables 3 vuotta sitten
test_eh_frame_parser a9fda54d39 esp_hw_support/esp_system: Re-evaluate header inclusions and include directories 4 vuotta sitten
.build-test-rules.yml be0fdfa176 soc: Add a soc cap, SOC_CLK_RC_FAST_D256_SUPPORTED, for whether the target has the RC_FAST_D256 clock 3 vuotta sitten
CMakeLists.txt 6798bfc4b0 TWDT: the Kconfig option ESP_TASK_WDT_EN is now used to enable Task Watchdog 3 vuotta sitten
Kconfig 6798bfc4b0 TWDT: the Kconfig option ESP_TASK_WDT_EN is now used to enable Task Watchdog 3 vuotta sitten
README.md 32aa5f7e25 esp_system: add notes on timekeeping 5 vuotta sitten
app.lf bbc599493e esp32: move common fragment definitions 5 vuotta sitten
check_system_init_priorities.py 42654927d5 esp_system: add a script to check the startup priorities 3 vuotta sitten
crosscore_int.c 6798bfc4b0 TWDT: the Kconfig option ESP_TASK_WDT_EN is now used to enable Task Watchdog 3 vuotta sitten
debug_stubs.c bb9cd84cdc debug_stubs: Refactor and add support for RISCV 4 vuotta sitten
eh_frame_parser.c a9fda54d39 esp_hw_support/esp_system: Re-evaluate header inclusions and include directories 4 vuotta sitten
esp_err.c ca7c9947fc esp_system: fix address printed by ESP_ERROR_CHECK 3 vuotta sitten
esp_ipc.c ccc184de51 ipc: Increase stacksize when compiling with -O0 3 vuotta sitten
esp_system.c ab09c07fdd esp32c6: add esp_system support 3 vuotta sitten
fpga_overrides.c ab09c07fdd esp32c6: add esp_system support 3 vuotta sitten
freertos_hooks.c 6005cc9163 hal: Deprecate interrupt_controller_hal.h, cpu_hal.h and cpu_ll.h interfaces 3 vuotta sitten
int_wdt.c 53c7dd4efc WDT: implement interrupt wdt and task wdt for ESP32-C2 3 vuotta sitten
linker.lf 3254f8deae esp_system: usb_console: fix restart when Wi-Fi is working 3 vuotta sitten
panic.c b2d1c34a38 [Panic] also print to secondary USB Serial/JTAG Console 3 vuotta sitten
sdkconfig.rename 6798bfc4b0 TWDT: the Kconfig option ESP_TASK_WDT_EN is now used to enable Task Watchdog 3 vuotta sitten
sdkconfig.rename.esp32 0687daf2c8 kconfig: move remaining kconfig options out of target component 3 vuotta sitten
sdkconfig.rename.esp32c3 d2872095f9 soc: moved kconfig options out of the target component. 3 vuotta sitten
sdkconfig.rename.esp32h2 d2872095f9 soc: moved kconfig options out of the target component. 3 vuotta sitten
sdkconfig.rename.esp32s2 d2872095f9 soc: moved kconfig options out of the target component. 3 vuotta sitten
sdkconfig.rename.esp32s3 d2872095f9 soc: moved kconfig options out of the target component. 3 vuotta sitten
stack_check.c a9fda54d39 esp_hw_support/esp_system: Re-evaluate header inclusions and include directories 4 vuotta sitten
startup.c ab09c07fdd esp32c6: add esp_system support 3 vuotta sitten
system_init_fn.txt 3254f8deae esp_system: usb_console: fix restart when Wi-Fi is working 3 vuotta sitten
system_time.c ab09c07fdd esp32c6: add esp_system support 3 vuotta sitten
ubsan.c 6005cc9163 hal: Deprecate interrupt_controller_hal.h, cpu_hal.h and cpu_ll.h interfaces 3 vuotta sitten
xt_wdt.c bff6826ee1 bugfix (esp_system): made xt_wdt spinlock static 3 vuotta sitten

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.