keithley kusb 3100, labview i2c protocol?

[g.enero]

We are using a Keithley KUSB-3100 data acquisition system in combination with Labview 8.0 (or 8.5) to acquire and analyze data. The problem we encounter is that one of the inputs of the DAQ is a digital input using the i2c protocol. The connection to the DAQ is not the problem, but the problem is that Keithley does not provide a solution to use the i2c protocol with Labview (which NI does with its FPGA module). Does anybody know an adequate solution for this problem? Thanks in advance!

[Loura]

Hi,

National Instruments provides two different solutions for comunication through i2c protocol. One is using FPGA device the other is a bus-powered USB interface for I²C USB 8451. You could find interesting that NI provide also a driver API for USB 8451.

https://www.ni.com/en/support/downloads/drivers/download.ni-845x-driver-software.html

Even if the the NI-845x software supports only NI hardware maybe could be usefull watch how you can program i2c with LabVIEW and in the NI-845x Software User Manual you can find an overview of the I²C and SPI buses as well as detailed information about the API.

Hope this helps a little.

Clara