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<== Date ==> <== Thread ==>

Subject: Can't get device capability and Can't clear buffers
From: 문석호 via Tech-talk <tech-talk at aps.anl.gov>
To: rivers at cars.uchicago.edu, ericnorum at gmail.com
Cc: tech-talk at aps.anl.gov
Date: Tue, 19 Oct 2021 17:45:04 +0900
First of all, I'm sorry that sending the reply with different email address.
There is some issue at my university mail system so I send the mail with gmail.

Thanks for your support, Mark Rivers and Eric Norum. However, I faced some other issue with usbtmc. 
After I saw the Eric's fixed code. I change the drcAsynUSBTMC.c  file like Eric but I saw the new message like below 
The version of asyn and base is 4-26, 3.14.12.5 which is same with past. 
I try to use the latest version of asyn but some error occured. I think there is some compatibility issue in my environment so I used the 4-26 version.
But when I check the drcAsynUSBTMC.c file of asyn-4.26 and latest version, there was no difference so I think it is not a problem. 

  1. Centos 7 environment (libusb_ver=0.1.4)
image.png
  1. Rasberrypi3 environment (libusb_ver=1.0)
image.png

In different environment, the epics shows the same message. 
To check the usb cable and the dg812 equipment, I communicate with dg812 by using Ultra Sigma(Program of RIGOL) and Ni-Max test panel but there were no error. 

Best Regards 

SeokHoMoon

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