#include <events.h>

Public Member Functions
u64	get_timestamp_gps48 () const

u64	get_timestamp_abs48 () const
	Get absolute timestamp as sent by the GPS.

Vec< u8 >	get_rb_link_ids () const

Vec< std::tuple< u8, u8, u8, LTBThreshold > >	get_trigger_hits () const

Vec< TriggerType >	get_trigger_sources () const
	Get the trigger sources from trigger source byte.

std::string	to_string () const
	String representation of the struct.

Static Public Member Functions
static MasterTriggerEvent	from_bytestream (const Vec< u8 > &bytestream, u64 &pos)

Public Attributes
EventStatus	event_status

u32	event_id
	event_id as assigned by the MasterTriggerBoard

u32	timestamp
	MTB timestamp.

u32	tiu_timestamp
	Tracker (?) timestamp.

u32	tiu_gps32
	GAPS GPS clock value (slow)

u32	tiu_gps16
	GAPS GPS clock value (fast)

u32	crc
	triggered paddles as seen by the MTB

u16	trigger_source

u32	dsi_j_mask

Vec< u16 >	channel_mask

u64	mtb_link_mask

Static Public Attributes
static const u16	HEAD = 0xAAAA
	begin struct marker

static const u16	TAIL = 0x5555
	end struct marker

static const usize	SIZE = 45
	the struct has a fixed size of SIZE

Detailed Description

The MasterTriggerEvent represesnts the information provided by the MTB for this one specific event. Most notably, it includes a board mask, which is the DSI/J connections which triggered, and a hit mask. The hit mask gives hit channels per DSI/J, which correspond to hit channels on a LTB.

FIXME -compatibiltiy. Reading older data, we have 2 scenarios - either 113 bytes of fixed size for 20 LTBs, or 133 bytes for 25 LTBs. We can modify from_bytestream to at least not throw an error when reading older data, but this would currently be a todo of lower priority

Member Function Documentation

◆ from_bytestream()

static MasterTriggerEvent MasterTriggerEvent::from_bytestream	(	const Vec< u8 > &	bytestream,
		u64 &	pos
	)

static

Factory function for MasterTriggerEvent

Deserialize a MasterTriggerEvent from a vector of of bytes

Parameters

bytestream	Byte representation of a MasterTriggerEvent, or including one at pos
pos	: Expected position of MasterTriggerEvent::HEAD in the stream

◆ get_timestamp_gps48()

u64 MasterTriggerEvent::get_timestamp_gps48 ( ) const

The combined GPS 48bit timestamp into a 48bit timestamp

◆ get_trigger_hits()

Vec< std::tuple< u8, u8, u8, LTBThreshold > > MasterTriggerEvent::get_trigger_hits ( ) const

Get the combination of triggered DSI/J/CH on the MTB which formed the trigger. This does not include further hits which fall into the integration window. For those, se rb_link_mask

The returned values follow the TOF convention to start with 1, so that we can use them to look up LTB ids in the db.

Returns

Vec<(hit)> where hit is (DSI, J, CH)

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

/home/runner/work/gaps-online-software/gaps-online-software/tof/dataclasses/C++/include/events.h

Public Member Functions

Static Public Member Functions