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Windows 7 USB Driver problem - not working


 

Am enjoying the journey learning how to use the nanovna but have encountered a problem relating to using nanovna saver that requires guidance from those more knowledgeable than I am regarding interfacing the device to a Windows 7 notebook.

I have connected the nanonvna to the same notebook to upgrade the device firmware (Release 0.1.1 with added scan command and battery.dfu) using dfuSe_Demo_3.0.6 with no issues.

Trying the 'original' P.C. application (Nanovna-Sharp) I can establish a connection of sorts (able to change Connect - Disconnect indication but that is all) if using COM3 (Com1 is the only other port shown and if selected then unable to connect/disconnect) but no data transferred so probably an anomaly.

Have installed the latest Nanovna-Saver (along with Python) and after start up and GUI displayed, an error in the command / DOS window (behind the GUI) shows as "unable to find..." - am guessing that the blank between ' ' is looking for the Com port and performing a scan shows no device or port available.

Checking the Windows device driver properties shows nanovna to be using ChibOS/RT Virtual Com port and Windows recognizes device being attached / removed.

Booting the same notebook into Linux (Puppy) the result of a 'lsusb' shows the nanovna as connected. As an aside, I considered trying to build nanovna-saver on the Puppy system but too many dependencies and not good experience in the past with other applications (I am not really a software person).

Searching for similar posts I only see Windows 10 issues and perhaps I have missed the answer to this challenge so apologies in advance.

Sincerely hope is an easy fix and that biggest issue is my ignorance... an idiots 'how to' (step by step) guide is probably needed.

MANY thanks for any guidance / suggestions.

73 Nigel ZS6RN

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