pflib::packing::SingleROCEventPacket Class Reference

Simple HGCROC-only event packet. More...

#include <SingleROCEventPacket.h>

Collaboration diagram for pflib::packing::SingleROCEventPacket:

Public Member Functions
void	from (std::span< uint32_t > data)
	parse into this package from the passed data span
Reader &	read (Reader &r)
	read from the input reader into this packet
void	to_csv (std::ofstream &f) const
	write current packet into a CSV
Sample	channel (int ch) const
	Get a specific Sample from a channel.
uint32_t	trigsum (int i_link, int i_sum, int i_bx=0) const
	Get a trigger cell sum.
	SingleROCEventPacket ()=default
	default constructor that does nothing

Public Attributes
std::array< DAQLinkFrame, 2 >	daq_links
	the two daq links for the connected HGCROC
std::array< TriggerLinkFrame, 4 >	trigger_links
	the four trigger links

Static Public Attributes
static const std::string	to_csv_header
	header string if using to_csv

Private Attributes
mutable::pflib::logging::logger	the_log_ {::pflib::logging::get("decoding")}

Detailed Description

Simple HGCROC-only event packet.

No zero suppressions or condensation is done, the entire HGCROC DAQ and Link packets are reaodut into a single event packet in sequence.

This is the style of readout from the 2021 teastbeam and can be done easily in pflib without much emulation.

Member Function Documentation

channel()

Sample pflib::packing::SingleROCEventPacket::channel

(

int

ch

)

const

Get a specific Sample from a channel.

The channel index input here is relative to the ROC [0,71]. If you have the channel index within a daq link (or ROC "half"), just access the daq links directly

ep.daq_links[i_link].channels[i_chan]

where i_link is the link index 0 or 1 and i_chan is the channel index within the link [0,35].

read()

Reader & pflib::packing::SingleROCEventPacket::read

(

Reader &

r

)

read from the input reader into this packet

enables us to

SingleROCEventPacket ep;
r >> ep;

to_csv()

void pflib::packing::SingleROCEventPacket::to_csv

(

std::ofstream &

f

)

const

write current packet into a CSV

Parameters

[in,out]

f

file to write CSV to

The columns of the output CSV are

i_link, bx, event, orbit, channel, Tp, Tc, adc_tm1, adc, tot, toa

Since there are two DAQ links each with 36 channels and one calib channel, there are 2*(36+1)=74 rows written for each call to this function.

The trigger links are entirely ignored.

trigsum()

uint32_t pflib::packing::SingleROCEventPacket::trigsum	(	int	i_link,
		int	i_sum,
		int	i_bx = 0 ) const

Get a trigger cell sum.

We do not have a unified ID number for trigger cells defined at the moment, so you need to specify both which trigger link it comes from and the index of the sum within that trigger link.

Parameters

[in]	i_link	trigger link 0-3
[in]	i_sum	index of sum within the link 0-3
[in]	i_bx	index of BX relative to in-time sample, default is 0 (the in-time sample)

We return the linearized sum since that is what most people want.

See also

TriggerLinkFrame::compressed_to_linearized for how this value is determined and how you should interpret it. TLDR: the value is linearized but is off by some scale factor that depends on the SelTC4 parameter on the chip.

Member Data Documentation

to_csv_header

const std::string pflib::packing::SingleROCEventPacket::to_csv_header

static

Initial value:

=
    "i_link,bx,event,orbit,channel," + Sample::to_csv_header

header string if using to_csv

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The documentation for this class was generated from the following files:

• include/pflib/packing/SingleROCEventPacket.h
• src/pflib/packing/SingleROCEventPacket.cxx