FPGA design files for D2390A-A evaluation board and Arrow/Terasic SoCkit Cyclone V FPGA evaluation board

Question

I am using the DC2390A-A evaluation board for the LTC2500-32 ADC with the Arrow/Terasic SoCkit Cyclone V FPGA evaluation board. I cannot find the design files for the Arrow/Terasic SoCkit evaluation board for use with the DC2390A-A. I am in need of the design files to program the Cyclone V FPGA of the SoCkit evaluation board so that I can evaluate the LTC2500-32 on the DC2390A-A evaluation board. 
 I can't even find the pinout information for the DC2390A-A evaluation board! So at this point, the DC2390A-A evaluation board is useless. 
 
 Thank you for any assistance with this issue!

ghoover · Accepted Answer

I have been informed that the DC2390 article may no longer be pointing to the most recent version of the FPGA image. Can you provide me with an email address that I can send a link to, with the most recent image. We are trying to update the article so that it points to the most recent image but I am not sure how long that will take.

MarkThoren · Answer

Hi Ghoover and HypeInst, 
 The SD card image has been updated and we are in the process of publishing the updated Python code. 
 Thanks for your patience in working through these issues. 
 -Mark

MarkThoren · Answer

Wow, glad you finally got some actual data! Now you're digging into the analog performance details of the part - 17 effective bits is just right - the no-latency data has an SNR of 104dB, which is about 17 effective bits. Higher resolution is achieved through filtering. There are a few example scripts that capture filtered data, have a look through them. If you really want to dig into the filters, the coefficients are included with linearlabtools in the \common\ltc25xx_filters directory. You can filter the no-latency data by using NumPy's convolve function and then downsampling, which is equivalent to capturing filtered data directly from the LTC2500's filtered data output. 
 -Mark

ghoover · Answer

The DC2390A-A schematic is here: https://www.analog.com/media/en/technical-documentation/eval-board-schematic/DC2390A4-SCH.PDF 
 The SoCkit board files are here: http://www.analog.com/media/en/evaluation-boards-kits/evaluation-software/LT_SoCkit_latest_SDcard_image.zip

MarkThoren · Answer

I think we are getting close - In the above screenshot, you're pinging 192.168.1.231, but I notice that's from a COM port - are you connected to the SoCkit's USB-UART here? You need to be able to ping the SoCkit from the same machine that the Python script is running on (from Windows CMD prompt or PowerShell prompt.) The 10061 error means that the machine you're trying to talk to isn't listening, which indicates a network issue. Note that the SoCkit will first try to get its IP address via DHCP, so if your network allows it, you could try that (assuming your Windows host is on the same network.) This saves the trouble of having to set the static IP on your host, but the drawback is that the IP address of your SoCkit could change (unless the DHCP server is configured to always give it the same address.)

MarkThoren · Answer

The fact that you can ping the board does indeed mean that the network connection is normal, so it really shouldn't be throwing the 10061 error. One thing to try - let's make very sure that the command line argument to the script is being set properly - can you add this line: 
 HOST = '192.168.1.231' 
 right after the existing HOST= line? You don't even need to comment out the original, as long as this comes after. After this, we'll be sure that your script is pointing to the right machine. 
 The next thing to do would be to verify that the daemon that listens for network connections is running - this is started at boot by /etc/rc.local, from the command line, run this command: 
 ps aux | grep funcd 
 and post the result here. You should see two Python processes running, a mem_funcd and mem_funcd2. These can stop working when commands get corrupted for some reason, but a reboot will start them up again. 
 
 And finally, there is indeed a script that just blinks lights, in the absence of a DC2390. If I recall correctly, all bitfiles have this LED wired to the same register (for this very situation, debugging while taking the connected board out of the equation.) it's at path: 
 python\llt\app_examples\Hello_World\SoCkit_hello_world.py 
 But I took a look at it and it looks like it may need to be fixed (as some of the scripts earlier in this discussion did.) 
 One thing you could try in the meantime - comment out the LTC6954_configure call. Then the first thing the script will do is read the FPGA type and revision, which is a hardcoded value input to an internal register, with no dependence on whether a DC2390 is connected. 
 And in fact, after that, the script will blink some lights, which should also work. 
 -Mark

MarkThoren · Answer

There's your problem! You need to set the last octet to something OTHER than 231(230, 100, anything really) because 231 is the SoCkit's address. This is noted toward the end of the setup article: https://www.analog.com/en/technical-articles/testing-data-converters-with-the-arrow-altera-sockit-fpga-board.html 
 What is happening is that your host computer is trying to talk to IP address 192.168.1.231, which is itself. Same thing with pinging. 
 -Mark

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FPGA design files for D2390A-A evaluation board and Arrow/Terasic SoCkit Cyclone V FPGA evaluation board

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