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Using extracta to extract symbol properties in SKILL

AsbjornEdvalds

Hi, 

I want to extract symbol properties from the symbols used in the board, but from the library files. That is, I want to be able to verify that some properties have not changed in the library from the symbols in the board file. E.g., I have a 0805 resistor which has a "DFA_DEV_CLASS:smdr_res" and it might have changed in the library to "DFA_DEV_CLASS:smdr_small". Being able to report this would quickly make it possible to see if the symbol in the board needs to be refreshed, as doing a full refresh regularly of all components in a design is not a wanted behavior. 

I wanted to use the extracta function and ipcBeginProcess to do this bidding, but it seems that properties of symbols are not supported using extracta. Following is the relevant snippet of the code which I started writing:

extr_opt = axlDMOpenFile("ALLEGRO_TEXT", axlTempFile( t ), "w")
fprintf(extr_opt "BOARD\nDATE_MODIFIED\nDFA_DEV_CLASS\nEND\n")
fname = get_filename(extr_opt)
axlDMClose(extr_opt)

LibFile = axlDMFindFile("ALLEGRO_PACKAGE_DB" "0805" "r")
axlMsgPut("LibFile: %L" LibFile)

cid = ipcBeginProcess(lsprintf("extracta -s -q -k -r \\\"%s\\\" \\\"%s\\\" " LibFile fname))
ipcWait(cid 5 5)
result = ipcReadProcess(cid 20)
axlMsgPut("read: %L" result)

Is this something that is possible using SKILL?

I am using 17.4-2019 S035.

Thanks in advance!

  • eDave
    0 in reply to AsbjornEdvalds

    You might like to use something like this code in place of an IPC process:

    defun( DE_getExtractedData (extractDataFile @optional fieldNames "tg")
    let((p, ln, labels, varName, units, data, fields, structData)
    p = axlDMOpenFile("EXTRACT_OUTPUT", extractDataFile, "r")
    gets(ln, p), labels = parseString(ln, "!\n")
    unless(fieldNames, fieldNames = labels)
    varName = gensym("extract")
    evalstring(strcat("defstruct(", varName " ", buildString(fieldNames), ")"))
    gets(ln, p), units = nth(8, axlStringCSVParse(ln, t, "!"))
    while(gets(ln, p)
    data = axlStringCSVParse(ln, t, "!")
    when(car(data) == "S"
    fields = buildString(mapcar(lambda((f), strcat("?", f, " \"" nth(listnindex(labels, f), data), "\"")), fieldNames))
    structData = lconc(structData, list(evalstring(strcat("make_", varName, "(", fields, ")"))))
    )
    )
    axlDMClose(p)
    deleteFile(extractDataFile)
    list(car(structData), units)
    ))

    Hopefully the output is self explanatory.

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