Armando 7240ad2b3a psram: refactor spiram.c on esp32s2 4 tahun lalu
..
include 722a6b7cf4 docs: update programming guide for esp32s3 chip independent system chapters 4 tahun lalu
ld b0afae5e60 espcoredump: fix a bug where tracked DRAM data where not dumped 4 tahun lalu
port 7240ad2b3a psram: refactor spiram.c on esp32s2 4 tahun lalu
test eddc196081 esp_clk: refactor target/clk.h to private/esp_clk.h 4 tahun lalu
test_eh_frame_parser 0771bd1711 espsystem: Rearchitecture and fix eh_frame_parser bugs 4 tahun lalu
CMakeLists.txt 8df306ab60 freertos,esp_system: make dependencies on some components optional 4 tahun lalu
Kconfig 209702d055 esp_ipc: Update documentation and API descriptions 4 tahun lalu
README.md 32aa5f7e25 esp_system: add notes on timekeeping 4 tahun lalu
app.lf bbc599493e esp32: move common fragment definitions 4 tahun lalu
crosscore_int.c 09487761cf ESP8684: add freertos, hal, esp_system support 4 tahun lalu
debug_stubs.c bb9cd84cdc debug_stubs: Refactor and add support for RISCV 4 tahun lalu
eh_frame_parser.c 0771bd1711 espsystem: Rearchitecture and fix eh_frame_parser bugs 4 tahun lalu
esp_err.c c16ceafa5c esp_common: move esp_err 5 tahun lalu
esp_ipc.c 209702d055 esp_ipc: Update documentation and API descriptions 4 tahun lalu
esp_system.c e22b4007d3 esp_hw_support: Removed deprecated CPU util functions 4 tahun lalu
fpga_overrides.c 09487761cf ESP8684: add freertos, hal, esp_system support 4 tahun lalu
freertos_hooks.c 0e0914476c esp_common: move freertos hooks 5 tahun lalu
int_wdt.c 16677b0d3c global: make periph enable/disable APIs private 4 tahun lalu
linker.lf 9069f70db3 system: add option to enable undefined behavior sanitizer (UBSAN) 4 tahun lalu
panic.c e22b4007d3 esp_hw_support: Removed deprecated CPU util functions 4 tahun lalu
sdkconfig.rename 5e3689ae0f esp32h2: update esp_system and esp_hw_support to support esp32h2 4 tahun lalu
stack_check.c 6e80811ca2 log: Remove redundant definition of LOG_LOCAL_LEVEL 4 tahun lalu
startup.c 8df306ab60 freertos,esp_system: make dependencies on some components optional 4 tahun lalu
system_time.c 09487761cf ESP8684: add freertos, hal, esp_system support 4 tahun lalu
task_wdt.c 16677b0d3c global: make periph enable/disable APIs private 4 tahun lalu
ubsan.c 9069f70db3 system: add option to enable undefined behavior sanitizer (UBSAN) 4 tahun lalu
xt_wdt.c 4869b3cd4a WDT: Add support for XTAL32K Watchdog timer 4 tahun lalu

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.