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How to receive digital input from U3 using matlab on OSX


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#1 elsewhere

elsewhere
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Posted 31 July 2014 - 05:56 AM

Hi,

 

I'm working on receiving digital input from U3 using matlab.

I think I successfully installed the exodriver and Iandol's matlab class labjack.m seems to be working fine.

 

After reading several examples, I could not figure out how I can read digital inputs from U3 using this class.

 

Any help will be highly appreciated.

Thank you very much in advance.

 



#2 LabJack Support

LabJack Support
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Posted 31 July 2014 - 12:08 PM

It looks like the class only sets digital I/O. To read digital I/O with labJack.m, the functionality will need to be added. You can add a function to read a single or multiple digital I/O using the Feedback command/response with IOTypes BitStateRead (single digital I/O) or PortStateRead (all digital I/O). If you need to set digital I/O direction use BitDirWrite/PortDirWrite.

 

Most of the labJack.m class functions that are interacting with the U3 are using the Feedback command/response, so you can use those functions' code to help implement new functions in MATLAB. The low-level Feedback command/response packets are documented here:

 

http://labjack.com/s...ers-guide/5.2.5

 

C examples are here and help demonstrate setting up command/response packets and parsing out the the data:

 

https://github.com/l...ter/examples/U3




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