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SLS Detector Package 4.0.0 released on 2018-08-22
=================================================
INTRODUCTION
This document describes the differences between 4.0.0 and 3.2.0 releases.
The conda package of the binaries can be downloaded from
https://github.com/slsdetectorgroup/sls_detector_software.git
The Python interface to the software package (including the package) is at
https://github.com/slsdetectorgroup/sls_detector.git
Manual (both HTML and pdf versions) are provided in
manual/docs/
Documentation from Source Code can be found for the Command Line and C++ API in
html:
manual/docs/html/slsDetectorClientDocs/index.html
manual/docs/html/slsDetectorUsersDocs/index.html
pdf:
manual/docs/pdf/slsDetectorClientDocs.pdf
manual/docs/pdf/slsDetectorUsersDocs.pdf
Documentation to the python API is available at
https://slsdetectorgroup.github.io/sls_detector/
Example for detector and receiver API can be found in
manual/manual-api
User documentation can also be accessed directly at this location:
https://www.psi.ch/detectors/users-support
Please send any software related questions or comments to:
dhanya.thattil@psi.ch
anna.bergamaschi@psi.ch
Please send any python related questions or comments to:
erik.frojdh@psi.ch
CONTENTS
- Firmware Requirements
- Changes in User Interface
- New/Modified Commands
- Other New Features
- Resolved Issues
- Known Issues
- Future Plans
Firmware Requirements
=====================
Gotthard
========
Minimum compatible version : 11.01.2013
Latest version : 08.02.2018 (50um and 25um Master)
09.02.2018 (25 um Slave)
Eiger
=====
Minimum compatible version : 22
Latest version : 22
Jungfrau
========
Minimum compatible version : 26.02.2018
Latest version : 26.02.2018
Detector Upgrade
================
Gotthard Cannot be upgraded remotely. Requires programming via USB blaster
Eiger Can be upgraded remotely via bit files
Jungfrau Can be upgraded remotely using sls_detector_put programfpga <pof>
Instructions available at
https://www.psi.ch/detectors/installation-instructions
under Detector Upgrade -> [Detector Type] -> Firmware.
Please refer to the link below for more details on the firmware versions.
https://www.psi.ch/detectors/firmware.
Changes in User Interface
=========================
Client
------
1. Shared Memory:
POSIX shared memory has been implemented and they are typically created in
/dev/shm/ folder.
A multiSlsDetector object will create a shared memory segment with naming style:
slsDetectorPackage_x_[_z]
and an slsDetector object will create a shared memory segment with naming style:
slsDetectorPackage_x_sls_y[_z]
where
x is the multi detector id
y is the sls detector id
z is the environment variable SLSDETNAME, if set.
They can be deleted directly.
Environment variable SLSDETNAME included for user-friendliness
of using 2 different detectors from the same client pc. One needn't use
different multi detector id if the SLSDETNAME is different for both consoles.
Constructor will fail if shared memory size is different (different package
releases/detectors). Loading config file cleans shared memory.
2. Exceptions in constructors:
All constructors that have an error throws an exception. For this release,
this is caught within the package and interfaced as error codes or messages
to the users using command line or API.
As a result:
- slsDetectorsUsers constructor signature now includes a success flag.
- If one uses multiSlsDetector, slsDetector, ZmqSocket classes directly,
catch exceptions from constructors.
- In future releases, the exception will be thrown
outside the package for the users to handle it.
3. API Compatibility:
Client now checks API version of Detector Server - Client and Receiver - Client
when connecting for the first time to detector server or receiver server
and the online flags have not been set in shm.
Upon failure, error messages will ensue and further commands will not
be executed. Detector servers referred to are only for Eiger, Jungfrau and Gotthard.
Previously, the detector server would exit on mismatched Firmware-Detector
server mismatch. They now wait for client to ask for compatibility check,
which is done the first time client connects to the detector and the
online flag in shm has not been set.
4. With the new shared memory implementation, commands "type" and "replace"
are removed and "add" now only appends detector to the end of the multi
detector list.
Receiver
--------
1. Reciever Header Structure in file writing and call back:
sls_receiver_header structure added to sls_receiver_defs.h for image headers
in file writing.
typedef std::bitset<MAX_NUM_PACKETS> sls_bitset;
typedef struct {
sls_detector_header detHeader; /**< is the detector header */
sls_bitset packetsMask; /**< is the packets caught bit mask */
} sls_receiver_header;
It includes the detector header structure + bitmask of 512 bits,
where each bit represents a packet caught. This is useful in saving time
in writing to file by not padding missing packets and still retaining useful data.
The binary and HDF5 writer version number changed from 1.0 to 2.0.
The detector header version remains as 1.0.
registerCallBackRawDataReady modified to give this structure pointer,
instead of individual structure member pointers.
2. ZmqSocket class:
If one uses ZmqSocket.h, then the json header has to be parsed outside
the class to allow the user to remove the restriction in extracting all data
from the json header.
3. Receiver Call back with modified size:
registerCallBackRawDataModifyReady call back that is similar to the receiver
registerCallBackRawDataReady has been added to allow the call back to
specify an updated size of image after call back. This is in view to process
an image in call back (including extract only a region of the image) and
provide this updated size in callback. This new resized/processed image
will be written to file or streamed out via zmq. This is useful in ROI
selection in the receiver.
This also means that the call back is now called before writing to file.
New/Modified Commands
=====================
Client
------
- add (modified):
appends detector to end of multi detector list.
- replace:
sets hostname/ip address for a single detector.
- user:
get user details from shared memory.
- checkdetversion:
checks client version compatibility with detector server.
- checkrecversion:
checks client version compatibility with receiver server.
Receiver
--------
- rx_zmqip:
sets/gets the zmq (TCP) ip of the receiver from where data is streamed
out from. (Eg. to the gui or intermediate process). By default, it is
the same as the zmqip.
- zmqip:
sets/gets the zmq (TCP) ip, where client listens to, to reconstuct images.
(Eg. from receiver or intermediate process). By default, it is the same
as rx_zmqip.
- rx_jsonaddheader:
sets/gets additional json header to be streamed out with the zmq from
receiver. Default is empty. Eg. p rx_jsonaddheader \"what\":\"nothing\"
- r_discardpolicy:
sets/gets the frame discard policy in the receiver.
0 - no discard (default),
1 - discard only empty frames,
2 - discard any partial frame(fastest)
- r_padding:
sets/gets the frame padding in the receiver.
0 does not pad partial frames(fastest),
1 (default) pads partial frames.
One can look at bitmask in the sls_receiver_header to process the unpadded
partial frames later.
- activate (modified):
Extra option added to pad or unpad images in receivers when deactivated.
activate i [padding option], where i is activate/deactivate and padding
option is "padding" (default) or "nopadding".
- rx_udpsocksize:
sets/gets the UDP socket buffer size. Already attempts to set by default
to 100mb, 2gb for Jungfrau. Does not remember custom values in client
shared memory, so must be initialized each time after setting receiver
hostname in config file.
- rx_realudpsocksize:
gets the actual UDP socket buffer size. Usually double the set udp socket
buffer size due to kernel bookkeeping.
- r_framesperfile:
sets/gets the frames per file in receiver. 0 means infinite or all frames
in a single file. Default of Eiger changed from 2k to 10k.
Eiger Specific
--------------
- status trigger:
To trigger internally via software, one can use "status trigger".
- subdeadtime:
sets/gets sub frame dead time in s in 32 bit mode. Subperiod is set in
the detector by subexptime + subdeadtime. This value is normally a
constant set by an expert catered to individual detector modules in the
config file. Receiver files writes master file metadata subperiod
instead of subdeadtime.
- gappixels:
enables/disables gap pixels in system (detector & receiver). 1 sets,
0 unsets. In Receiver, 4 bit gap pixels mode is not implemented, but is
implemented in client data call back. Gap pixels are at module level
and not at multi module level.
- measuredperiod:
gets the measured frame period (time between last frame and the previous
one) in s. Makes sense only for acquisitions of more than 1 frame.
- measuredsubperiod:
gets the measured subframe period (time between last subframe and the
previous one) in s in 32 bit mode.
- flags(modified):
extra flags "overflow" (default) and "nooverflow" for sub images in 32
bit mode. If set to overflow, it will set MSB of pixel data high if
there was an overflow in any of the sub images 32 bit mode.
Jungfrau Specific
-----------------
- storagecells:
sets/gets number of additional storage cells per acquisition. For very
advanced users only. Range: 0-15. Default: 0.
The #images = #frames * #cycles * (#storagecells +1).
- storage_start:
sets/gets the storage cell that stores the first acquisition of the series.
For very advanced users only. Range: 0-15. Default: 15(0xf).
Other New Features
==================
Client
------
1. (Jungfrau & Gotthard) Settingsdir and caldir is removed from config file.
Default dacs are stored in detector server. Hence, these folders
are also removed from slsDetectorPackage/settingsdir. Eiger and Mythen
continue to have them.
2. Depending on 1d position of detectors and detsizechan in config file,
xcoord and ycoord are given to detector servers (Eiger and Jungfrau)
to encode into the udp header.
3. Users API updated to reflect new features.
SlsReceiver
-----------
1. slsMultiReceiver executable added that creates multiple receiver child processes.
./slsMultiReceiver [start_tcp_port] [num_receivers] [1 for call back, 0 for none]
2. Default xcoord and ycoord are hardcoded for missing packets. (Eiger and Jungfrau)
Gui
---
1. (Jungfrau) Gain plot included. Option under 2D options in Plot tab.
2. Option to maintain aspect ratio
added few more functions to slssDeectorUsers API
setThresholdEnergy with the more options such as trimbits and settings
resetFramesCaughtInReceiver
setReceiverFifoDepth
setFlowControl10G
setTenGigabitEthernet
getNMods
setSubFrameExposureTime
setSubFrameExposureDeadTime
setReceiverDataStreamingOutIP
setClientDataStreamingInIP
enableGapPixels
setOverflowMode
Resolved Issues
===============
Client
------
1. If trimen gives different list from different detectors, it returns a -1.
Receiver
--------
1. Silent feature of receiver fixed.
2. Socket descriptor misused earlier for success flag, instead exceptions
used that are handled inside the package.
3. Global optind variable initialized to instantiate multiple receivers
in same process.
Known Issues
============
Receiver
--------
1. HDF5 compression and filters are not implemented yet.
Future Plans
============
Client
------
1. Exceptions thrown to the user to be handled.
2. Compilation using c++11.
3. Support of Mythen II restricted to this major and its minor releases.
4. Restructuring and refactoring of client code.
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