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Informacje o strukturze local_time_hw_device
#include <
local_time_hal.h
>
Definicja w wierszu
57
pliku
local_time_hal.h
.
Metoda używana do zbierania danych synchronizacji na niskim poziomie w środowiskach laboratoryjnych. Większość implementacji HAL ustawia ten element na NULL lub zwraca -EINVAL, aby wskazać, że ta funkcja nie jest obsługiwana. Produkcyjne interfejsy HAL nie powinny obsługiwać tej metody.
Definicja w wierszu
98
pliku
local_time_hal.h
.
Zwraca nominalną częstotliwość (w hercach) licznika czasu lokalnego w całym systemie.
Definicja w wierszu
77
w pliku
local_time_hal.h
.
Zwraca bieżącą wartość systemowego licznika czasu lokalnego
Definicja w wierszu
70
w pliku
local_time_hal.h
.
Ustawia szybkość narastania sygnału w układzie HW, który steruje systemowym licznikiem czasu lokalnego. W przypadku powodzenia platformy powinny zwrócić wartość 0. Platformy, które nie obsługują spowitu HW, powinny pozostawić tę metodę ustawioną na NULL.
Prawidłowe wartości dla szybkości mieszczą się w zakresie od MIN_INT16 do MAX_INT16. Implementacje platform powinny próbować mapować ten zakres liniowo na minimalną/maksymalną szybkość przełączania ich sprzętu.
Definicja w wierszu
89
w pliku
local_time_hal.h
.
Dokumentacja tego typu danych została wygenerowana z tego pliku:
Treść strony i umieszczone na niej fragmenty kodu podlegają licencjom opisanym w Licencji na treści. Java i OpenJDK są znakami towarowymi lub zastrzeżonymi znakami towarowymi należącymi do firmy Oracle lub jej podmiotów stowarzyszonych.
Ostatnia aktualizacja: 2025-07-27 UTC.
[[["Łatwo zrozumieć","easyToUnderstand","thumb-up"],["Rozwiązało to mój problem","solvedMyProblem","thumb-up"],["Inne","otherUp","thumb-up"]],[["Brak potrzebnych mi informacji","missingTheInformationINeed","thumb-down"],["Zbyt skomplikowane / zbyt wiele czynności do wykonania","tooComplicatedTooManySteps","thumb-down"],["Nieaktualne treści","outOfDate","thumb-down"],["Problem z tłumaczeniem","translationIssue","thumb-down"],["Problem z przykładami/kodem","samplesCodeIssue","thumb-down"],["Inne","otherDown","thumb-down"]],["Ostatnia aktualizacja: 2025-07-27 UTC."],[],[],null,["# Android Hardware Abstraction Layer: local_time_hw_device Struct Reference\n\nlocal_time_hw_device Struct Reference\n=====================================\n\n[Data Fields](#pub-attribs) \nlocal_time_hw_device Struct Reference \n\n`\n#include \u003c\n`[local_time_hal.h](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/local_time_hal.h)`\n\u003e\n`\n\n|----------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| Data Fields ----------- ||\n| struct [hw_device_t](/reference/hal/structhw__device__t) | [common](/reference/hal/structlocal__time__hw__device#a86a0ca82dd3f02023e259b8b5e155dbe) |\n| ||\n| int64_t(\\* | [get_local_time](/reference/hal/structlocal__time__hw__device#aa2fced6a37dbd2b5f72c8148a52c611a) )(struct [local_time_hw_device](/reference/hal/structlocal__time__hw__device) \\*dev) |\n| ||\n| uint64_t(\\* | [get_local_freq](/reference/hal/structlocal__time__hw__device#a761e4dab7f805e4a1810a2214aabb2f3) )(struct [local_time_hw_device](/reference/hal/structlocal__time__hw__device) \\*dev) |\n| ||\n| int(\\* | [set_local_slew](/reference/hal/structlocal__time__hw__device#af05541302faa15c0eb8a04c0765297b0) )(struct [local_time_hw_device](/reference/hal/structlocal__time__hw__device) \\*dev, int16_t rate) |\n| ||\n| int(\\* | [get_debug_log](/reference/hal/structlocal__time__hw__device#a3c571551268d4ba712c129ac665d0ff5) )(struct [local_time_hw_device](/reference/hal/structlocal__time__hw__device) \\*dev, struct [local_time_debug_event](/reference/hal/structlocal__time__debug__event) \\*records, int max_records) |\n| ||\n\n\nDetailed Description\n--------------------\n\n\nDefinition at line\n[57](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/local_time_hal.h)\nof file\n[local_time_hal.h](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/local_time_hal.h)\n.\n\nField Documentation\n-------------------\n\n\n|-----------------------------------------------------------------|\n| struct [hw_device_t](/reference/hal/structhw__device__t) common |\n\n\nCommon methods of the local time hardware device. This\n*must*\nbe the first member of\n[local_time_hw_device](/reference/hal/structlocal__time__hw__device)\nas users of this structure will cast a\n[hw_device_t](/reference/hal/structhw__device__t)\nto\n[local_time_hw_device](/reference/hal/structlocal__time__hw__device)\npointer in contexts where it's known the\n[hw_device_t](/reference/hal/structhw__device__t)\nreferences a\n[local_time_hw_device](/reference/hal/structlocal__time__hw__device)\n.\n\n\nDefinition at line\n[64](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/local_time_hal.h)\nof file\n[local_time_hal.h](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/local_time_hal.h)\n.\n\n|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| int(\\* get_debug_log)(struct [local_time_hw_device](/reference/hal/structlocal__time__hw__device) \\*dev, struct [local_time_debug_event](/reference/hal/structlocal__time__debug__event) \\*records, int max_records) |\n\n\nA method used to collect low level sync data in a lab environments. Most HAL implementations will simply set this member to NULL, or return -EINVAL to indicate that this functionality is not supported. Production HALs should never support this method.\n\n\nDefinition at line\n[98](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/local_time_hal.h)\nof file\n[local_time_hal.h](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/local_time_hal.h)\n.\n\n|----------------------------------------------------------------------------------------------------------------|\n| uint64_t(\\* get_local_freq)(struct [local_time_hw_device](/reference/hal/structlocal__time__hw__device) \\*dev) |\n\n\nReturns the nominal frequency (in hertz) of the system wide local time counter\n\n\nDefinition at line\n[77](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/local_time_hal.h)\nof file\n[local_time_hal.h](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/local_time_hal.h)\n.\n\n|---------------------------------------------------------------------------------------------------------------|\n| int64_t(\\* get_local_time)(struct [local_time_hw_device](/reference/hal/structlocal__time__hw__device) \\*dev) |\n\n\nReturns the current value of the system wide local time counter\n\n\nDefinition at line\n[70](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/local_time_hal.h)\nof file\n[local_time_hal.h](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/local_time_hal.h)\n.\n\n|-------------------------------------------------------------------------------------------------------------------------|\n| int(\\* set_local_slew)(struct [local_time_hw_device](/reference/hal/structlocal__time__hw__device) \\*dev, int16_t rate) |\n\n\nSets the HW slew rate of oscillator which drives the system wide local time counter. On success, platforms should return 0. Platforms which do not support HW slew should leave this method set to NULL.\n\n\nValid values for rate range from MIN_INT16 to MAX_INT16. Platform implementations should attempt map this range linearly to the min/max slew rate of their hardware.\n\n\nDefinition at line\n[89](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/local_time_hal.h)\nof file\n[local_time_hal.h](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/local_time_hal.h)\n.\n\n*** ** * ** ***\n\nThe documentation for this struct was generated from the following file:\n\n- hardware/libhardware/include/hardware/ [local_time_hal.h](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/local_time_hal.h)"]]
