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Instrument Control (GPIB, Serial, VISA, IVI)

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Configure CP210x USB to UART Bridge with NI VISA

Configure CP210x USB to UART Bridge with NI VISA

‎08-27-2019 03:21 PM

Hi,

 

I'm trying to get the real-time data from a Davis weather station. It doesn't show up as a DAQ device in NI MAX. I changed the direct USB connection to USB connection that can simulate COM port. It is shown as CP210x USB to UART in the device manager. I installed the driver from Silicon Labs. The problem is this device didn't show up in the device in NI MAX. When I used the VISA protocol. it can be configured and wrote but not be read or give any response. I tried with VISA driver wizard, got stuck in step 2 because I don't know where I can get the certificate.

 

https://knowledge.ni.com/KnowledgeArticleDetails?id=kA00Z0000019L9QSAU&l=en-US

 

The COM communication reference for CP210x is in the following link.

https://www.silabs.com/documents/public/application-notes/AN978-cp210x-usb-to-uart-api-specification...

 

The serial communication reference from Davis is in this link

https://www.davisinstruments.com/support/weather/download/VantageSerialProtocolDocs_v261.pdf

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