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esp_system
Ivan Grokhotkov 2f9d47c708 Merge branch 'feature/gdbstub_rt_multicore' into 'master' %!s(int64=3) %!d(string=hai) anos
..
include 2f9d47c708 Merge branch 'feature/gdbstub_rt_multicore' into 'master' %!s(int64=3) %!d(string=hai) anos
ld c1cbd7bbf6 cache/mmu: implememnt cache and mmu hal APIs in bootloader %!s(int64=3) %!d(string=hai) anos
port ca3c056ac9 kconfig: replace deprecated options with new values %!s(int64=3) %!d(string=hai) anos
test ca3c056ac9 kconfig: replace deprecated options with new values %!s(int64=3) %!d(string=hai) anos
test_eh_frame_parser a9fda54d39 esp_hw_support/esp_system: Re-evaluate header inclusions and include directories %!s(int64=3) %!d(string=hai) anos
CMakeLists.txt 2f9d47c708 Merge branch 'feature/gdbstub_rt_multicore' into 'master' %!s(int64=3) %!d(string=hai) anos
Kconfig 2f9d47c708 Merge branch 'feature/gdbstub_rt_multicore' into 'master' %!s(int64=3) %!d(string=hai) anos
README.md 32aa5f7e25 esp_system: add notes on timekeeping %!s(int64=4) %!d(string=hai) anos
app.lf bbc599493e esp32: move common fragment definitions %!s(int64=4) %!d(string=hai) anos
crosscore_int.c a8c3fe56c8 This commit add to GDBstup: %!s(int64=3) %!d(string=hai) anos
debug_stubs.c bb9cd84cdc debug_stubs: Refactor and add support for RISCV %!s(int64=4) %!d(string=hai) anos
eh_frame_parser.c a9fda54d39 esp_hw_support/esp_system: Re-evaluate header inclusions and include directories %!s(int64=3) %!d(string=hai) anos
esp_err.c c16ceafa5c esp_common: move esp_err %!s(int64=4) %!d(string=hai) anos
esp_ipc.c 6f9fc0ba8e esp_system: Place ipc_task semaphores on DRAM %!s(int64=3) %!d(string=hai) anos
esp_system.c 27f5c90e2e freertos: Fix usage of vTaskSuspendAll()/xTaskResumeAll() %!s(int64=3) %!d(string=hai) anos
fpga_overrides.c 09487761cf ESP8684: add freertos, hal, esp_system support %!s(int64=4) %!d(string=hai) anos
freertos_hooks.c 0e0914476c esp_common: move freertos hooks %!s(int64=4) %!d(string=hai) anos
int_wdt.c a9fda54d39 esp_hw_support/esp_system: Re-evaluate header inclusions and include directories %!s(int64=3) %!d(string=hai) anos
linker.lf 9069f70db3 system: add option to enable undefined behavior sanitizer (UBSAN) %!s(int64=4) %!d(string=hai) anos
panic.c e22b4007d3 esp_hw_support: Removed deprecated CPU util functions %!s(int64=4) %!d(string=hai) anos
sdkconfig.rename bb88338118 system: move kconfig options out of target component %!s(int64=3) %!d(string=hai) anos
sdkconfig.rename.esp32 bb88338118 system: move kconfig options out of target component %!s(int64=3) %!d(string=hai) anos
sdkconfig.rename.esp32c3 bb88338118 system: move kconfig options out of target component %!s(int64=3) %!d(string=hai) anos
sdkconfig.rename.esp32h2 23c55946a6 kconfig: also parse target specific sdkconfig.rename.TARGET files %!s(int64=4) %!d(string=hai) anos
sdkconfig.rename.esp32s2 bb88338118 system: move kconfig options out of target component %!s(int64=3) %!d(string=hai) anos
sdkconfig.rename.esp32s3 bb88338118 system: move kconfig options out of target component %!s(int64=3) %!d(string=hai) anos
stack_check.c a9fda54d39 esp_hw_support/esp_system: Re-evaluate header inclusions and include directories %!s(int64=3) %!d(string=hai) anos
startup.c bb88338118 system: move kconfig options out of target component %!s(int64=3) %!d(string=hai) anos
system_time.c cf049e15ed esp8684: rename target to esp32c2 %!s(int64=4) %!d(string=hai) anos
task_wdt.c 57fd78f5ba freertos: Remove legacy data types %!s(int64=4) %!d(string=hai) anos
ubsan.c 0d86151b82 esp_system: fix ubsan builtins' prototypes to suppress Wbuiltin-declaration-mismatch %!s(int64=3) %!d(string=hai) anos
xt_wdt.c 4869b3cd4a WDT: Add support for XTAL32K Watchdog timer %!s(int64=4) %!d(string=hai) anos

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.