gptp_timer_t Struct Reference

Runtime state of one GPTP timer unit. More...

Data Fields
bool	enabled
	PTPTMEC.TEq: unit is counting.
uint64_t	off_sec
	Committed offset seconds (48-bit).
uint32_t	off_nsec
	Committed offset nanoseconds (below 1e9).
uint64_t	acc_sec
	Free-running whole seconds.
uint64_t	acc_fixed
	Free-running sub-second, 5.27 fixed-point ns.
uint32_t	latch_gptp_m
	PTPGPTPTMtM latched on the L read.
uint32_t	latch_gptp_u
	PTPGPTPTMtU latched on the L read.
uint32_t	latch_avtp_u
	PTPAVTPTMtU latched on the L read.

Detailed Description

Runtime state of one GPTP timer unit.

enabled tracks PTPTMEC.TEq. off_sec / off_nsec are the committed 78-bit offset (set on the PTPTOVCtL write). acc_sec plus acc_fixed are the free-running counter: acc_fixed is the sub-second part in 5.27 fixed-point nanoseconds (always below one second) and acc_sec the whole seconds carried out of it, so the pair never overflows. latch_gptp_m / latch_gptp_u / latch_avtp_u hold the M/U halves sampled when the matching L register was last read, giving an atomic three-read view.

Definition at line 138 of file board_periph_gptp.c.

Field Documentation

acc_fixed

uint64_t gptp_timer_t::acc_fixed

Free-running sub-second, 5.27 fixed-point ns.

Definition at line 143 of file board_periph_gptp.c.

Referenced by internal_gptp_report(), internal_gptp_tick_timer(), and internal_gptp_time_now().

acc_sec

uint64_t gptp_timer_t::acc_sec

Free-running whole seconds.

Definition at line 142 of file board_periph_gptp.c.

Referenced by internal_gptp_report(), internal_gptp_tick_timer(), and internal_gptp_time_now().

enabled

bool gptp_timer_t::enabled

PTPTMEC.TEq: unit is counting.

Definition at line 139 of file board_periph_gptp.c.

Referenced by internal_gptp_report(), internal_gptp_tick_timer(), and internal_gptp_time_now().

latch_avtp_u

uint32_t gptp_timer_t::latch_avtp_u

PTPAVTPTMtU latched on the L read.

Definition at line 146 of file board_periph_gptp.c.

Referenced by internal_gptp_read_monitor().

latch_gptp_m

uint32_t gptp_timer_t::latch_gptp_m

PTPGPTPTMtM latched on the L read.

Definition at line 144 of file board_periph_gptp.c.

Referenced by internal_gptp_read_monitor().

latch_gptp_u

uint32_t gptp_timer_t::latch_gptp_u

PTPGPTPTMtU latched on the L read.

Definition at line 145 of file board_periph_gptp.c.

Referenced by internal_gptp_read_monitor().

off_nsec

uint32_t gptp_timer_t::off_nsec

Committed offset nanoseconds (below 1e9).

Definition at line 141 of file board_periph_gptp.c.

Referenced by internal_gptp_time_now().

off_sec

uint64_t gptp_timer_t::off_sec

Committed offset seconds (48-bit).

Definition at line 140 of file board_periph_gptp.c.

Referenced by internal_gptp_time_now().

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The documentation for this struct was generated from the following file:

• tools/ra8_emulator/src/periph/board_periph_gptp.c