esp-idf/components/esp_system
Jiang Jiang Jian c173845ff3 Merge branch 'feature/tlsf-dynamic-control-size_v5.0' into 'release/v5.0'
heap: Update to the new tlsf implementation of dynamic metadata size (backport v5.0)

See merge request espressif/esp-idf!20774
2022-12-20 13:51:07 +08:00
..
include TWDT: the Kconfig option ESP_TASK_WDT_EN is now used to enable Task Watchdog 2022-12-01 10:45:35 +00:00
ld bugfix: fix redefined _iram_end 2022-11-18 19:53:19 +08:00
port Merge branch 'feature/add_int_task_wdt_esp32c2_v5.0' into 'release/v5.0' 2022-12-05 16:38:35 +08:00
task_wdt esp_timer: add a function to restart timer 2022-12-01 10:45:35 +00:00
test TWDT: the Kconfig option ESP_TASK_WDT_EN is now used to enable Task Watchdog 2022-12-01 10:45:35 +00:00
test_apps
test_eh_frame_parser
.build-test-rules.yml
CMakeLists.txt TWDT: the Kconfig option ESP_TASK_WDT_EN is now used to enable Task Watchdog 2022-12-01 10:45:35 +00:00
Kconfig TWDT: the Kconfig option ESP_TASK_WDT_EN is now used to enable Task Watchdog 2022-12-01 10:45:35 +00:00
README.md
app.lf
check_system_init_priorities.py
crosscore_int.c TWDT: the Kconfig option ESP_TASK_WDT_EN is now used to enable Task Watchdog 2022-12-01 10:45:35 +00:00
debug_stubs.c
eh_frame_parser.c
esp_err.c
esp_ipc.c
esp_system.c bugfix: unstall other cpu on core reset 2022-12-08 15:40:56 +08:00
fpga_overrides.c
freertos_hooks.c
int_wdt.c WDT: implement interrupt wdt and task wdt for ESP32-C2 2022-12-01 10:45:35 +00:00
linker.lf
panic.c WDT: implement interrupt wdt and task wdt for ESP32-C2 2022-12-01 10:45:35 +00:00
sdkconfig.rename TWDT: the Kconfig option ESP_TASK_WDT_EN is now used to enable Task Watchdog 2022-12-01 10:45:35 +00:00
sdkconfig.rename.esp32
sdkconfig.rename.esp32c3
sdkconfig.rename.esp32h2
sdkconfig.rename.esp32s2
sdkconfig.rename.esp32s3
stack_check.c esp_system: fix placement of __stack_chk_fail from flash to RAM 2022-12-14 12:37:23 +01:00
startup.c
system_init_fn.txt
system_time.c
ubsan.c
xt_wdt.c

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.