Accessing Pickering Drivers from Python

    Pickering drivers are standard Windows dll's and as such can be accessed from most programming languages, including Python.

    To access a library, use the ctypes library, here is an example of access to the non-VISA driver PILPXI:

    At the command line


    from ctypes import *
     
    pilpxi = windll.LoadLibrary("pilpxi")
     
    ver = pilpxi.PIL_Version()

    A Python Library for PILPXI

    An implementation of the library is provided here

    It contains 2 class definitions:

    • pilpxi_base

      contains non card-specific functions to locate PXI cards

    • pilpxi_card

      contains all the card -specific functions to access and control Pickering PXI cards

    Example:

    from pilpxi import *
     
    base = pilpxi_base()
     
    e, count = base.CountFreeCards()
    e, bus, slot = base.FindFreeCards(count)
     
    cardnum = 0
    while cardnum < count:
     
        card = pilpxi_card(bus[cardnum], slot[cardnum])
     
        err, cid = card.CardId()
        print "Card ",cardnum
        print "Bus", bus[cardnum], " Device", slot[cardnum]
        print "ID = ", cid
        e, ins, outs = card.EnumerateSubs()
        print "subunits: ", ins, "input, ", outs, "output"
     
        sub = 1
        while sub <= outs:
            e, inf = card.SubType(sub, 1)
            print "subunit ",sub, " = ", inf
            sub = sub + 1
            cardnum = cardnum +1
     

    In this example, pilpxi_base is used to locate all available cards. CountFreeCards returns the number of cards found, then FindFreeCards returns two arrays containing the bus and device numbers of the cards.

    Next pilpxi_card is used to open each card and then basic card information is queried and the type of each subunit presented.

    For basic details of the functions available the user is referred to pilpxi documentation.

    Need Help´╝č



    Knowledgebase

    Search our knowledgebase for information on software drivers, product comparisons and technical support for our entire product range.

    Knowledgebase Wiki


    Product Selector

    Because we offer such a large range of products, this tool will help you narrow down our offering to get you the correct switch and simulation solution you need.

    Try the selector


    Resource center

    From success stories and product videos to product literature and newsletters, find the information you need about our switching and simulation solutions.

    Get the resources you need


    Worldwide presence

    We supply and support our products across the globe, with seven offices in the Americas, Europe and Asia as well as additional representation. 

    Find a local office or agent near you