Re: ADEiger R3-4 EIGER1 param=high_voltage/state

[Mark Rivers via Tech-talk <tech-talk at aps.anl.gov>]

Hi John,

I have pushed a fix to the master branch to eliminate that spurious error message about HV_STATE when creating the detector.

Note that depending on the Eiger model you may still see error messages like this when creating the detector:

*******************************

RestApi::get: [param=link_2] server returned error code 500

2022/06/16 08:26:42.063 Param[LINK_2]::baseFetch: [param=link_2] unable to parse json response

[]

2022/06/16 08:26:42.063 Param[LINK_2]::fetch<int>: [param=LINK_2] underlying baseFetch failed

*******************************

Those errors arise because the driver creates parameters to query the status of 4 Ethernet links on the detector.  However, some detectors have fewer than 4 links and the Dectris API does not provide a way to query the actual number of links.  For example our Eiger 500 only has 2 links, and so only links 0 and 1 exist, and I see those error messages for links 2 and 3.

These error messages can be ignored.

Mark

---

From: Mark Rivers
Sent: Wednesday, June 15, 2022 2:02 PM
To: John Dobbins <john.dobbins at cornell.edu>
Cc: tech-talk at aps.anl.gov <tech-talk at aps.anl.gov>
Subject: RE: ADEiger R3-4 EIGER1 param=high_voltage/state

 

Hi John,

 

You can ignore that message.  The driver only polls that value if it is an Eiger2, but it does create the parameter even if it is an Eiger1.  That is a mistake and I will fix it in a future release.

 

Mark

 

 

From: Tech-talk <tech-talk-bounces at aps.anl.gov> On Behalf Of John Dobbins via Tech-talk
Sent: Wednesday, June 15, 2022 1:36 PM
To: tech-talk at aps.anl.gov
Subject: ADEiger R3-4 EIGER1 param=high_voltage/state

 

All,

 

I just built ADEiger from the current Master (R3-4). When I start the EIGER1 IOC I get a message

 

RestApi::get: [param=high_voltage/state] server returned error code 500

2022/06/15 14:23:47.959 Param[HV_STATE]::baseFetch: [param=high_voltage/state] unable to parse json response

[]

2022/06/15 14:23:47.959 Param[HV_STATE]::fetch<string>: [param=HV_STATE] underlying baseFetch failed

 

The is after eigerDetectorConfig.

 

According to the ADEiger/RELEASE.md  high_voltage/state is only available on EIGER2.

 

asyn port:         EIG

EPICS name:    EIG2:cam1:

Model:              Eiger 4M

Firmware:         eiger-1.6.6-272.gitb59a1d9.release

SDK:                   1.6.6

Driver version: 3.4.0

ADCore :            3.12.1

 

 

John Dobbins

 

Research Support Specialist

Cornell High Energy Synchrotron Source

Cornell University

 

www.chess.cornell.edu