Open source hardware GPIB USB adapter update

Posted on Monday, March 17th, 2014 in open source by DP


Steven Casagrande posted an update on his open source hardware GPIB USB adapter:

After many days, I just finished off firmware version 5 for my adapter. This is probably my biggest update yet. A lot of people asked for compatibility with the Prologix commands so that’s what I focused on. Here is an overview of the new firmware:

  • Nearly all Prologix command set support. The adapter should now work with some pre-existing software tools and examples on the internet that were originally intended. Some will require a few changes for baud rate and flow control settings
  • Improved termination character handling
  • SRQ support (but no parallel polling, only serial)
  • Improved stability
  • Device mode (first version so there may be fixes in the future)
  • Most settings can be stored in EEPROM
  • Basic FIFO buffer for data sent from the PC

Via the forum.

This entry was posted on Monday, March 17th, 2014 at 1:08 pm and is filed under open source. You can follow any responses to this entry through the RSS 2.0 feed. You can skip to the end and leave a response. Pinging is currently not allowed.

3 Responses to “Open source hardware GPIB USB adapter update”

  1. Drone says:

    Progress on Prologix compatibility – sweet! We need some testing with the KE5FX GPIB Tool Kit by John Miles found here:

    Regards, David

    • So it works and it doesn’t at the same time. It found that his software requires the use of the RTS/CTS hardware control lines by default. In addition, it is set to use a different baudrate.

      Both problems can be fixed by recompiling his software. In addition, the baudrate problem can be fixed by playing with a registry key used by the FTDI driver to map the baudrates. I think you can also make an entry in a config file for the toolkit for the baudrate part. I haven’t tried that one though.

      The biggest though is the RTS/CTS requirement. I’ve been in contact with John about the issue and I recommended he add an option to not use those control lines.

  2. Kaz says:

    Sweet! I might see if I can get one of these now that there’s some progress on device mode.

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