Experimental Physics and
Industrial Control System

Mark Rivers <[email protected]> · Thu, 26 Jun 2014 21:06:21 +0000

Folks,

Release 1-1 of the measComp module is now available.

The major items from the release notes are:

* Added support for the new USB-CTR04/08 counter/timer modules. This includes support for the EPICS scaler record (similar to the Joerger VSC and SIS3820), and multi-channel scaler mode (similar to the SIS3820). This device can replace the SIS3820 in most applications for $429, which is less than 10% of the cost of the SIS3820. 

* Added _RBV (readback) fields for pulse generator Period, Frequency, Width, and Delay since the requested value may not match the actual value due to hardware limitations. 

* Add new demoSrc directory that contains a tutorial/demo on how to write a driver using asynPortDriver. The example is based on the USB-1608GX-2AO. It includes: 
  o 6 versions of the demo driver source code, starting with a very simple 132 line driver that just does 2 analog output records, and ending with the full driver that is 1255 lines and has waveform digitizer and waveform generator support, etc. 
  o A new iocMeasCompDemo directory with the various versions of the startup script. 
  o New medm files (measCompDemoTop.adl, 1608G_V[1,2,3,4,5].adl). 
  o New files in the documentation directory, measCompDriverTalk.pdf and measCompTutorial.pdf that were presented at an EPICS class on writing drivers based on asynPortDriver. 

The home page for measComp is here:
http://cars.uchicago.edu/software/epics/measComp.html

The documentation is here:
http://cars.uchicago.edu/software/epics/measCompDoc.html

Cheers,
Mark

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System