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Re: gEDA-user: IEC417 + U? errors

It can't be fixed, because the IEC417 standard isn't a circuit design standard: the symbols are intended for documentation, not for expressing the nitty gritty details. They're good for drawing docs describing "principles of operation" of a circuit, and I've actually used them for that. But it might make sense to distribute them separately with the warning NOT FOR ACTUAL CIRCUIT DESIGN.

On Jan 7, 2006, at 12:01 PM, Phil Taylor wrote:


John,

The IEC417 got me into a lot of trouble -- several times.  Blech.

"U?" caused a good deal of pain.

Maybe the IEC417 library should be scrapped if it is the cause of these
problems?

Or wait, should it be properly attributed and kept?

Is there a replacement anyone is working on?

Phil



John Doty <jpd@xxxxxxxxxxxxx> wrote:

Which symbol are you using for ground? DO NOT use ground.sym from the
IEC417 library: it doesn't have proper attributes.

In fact, *never* use anything from the IEC417 library in a circuit.
It's only good for abridged diagrams in documents. The "pins"
generally represent ports, not node connections. Dangerous to newbies
to have it in the standard distribution...

On Jan 7, 2006, at 11:42 AM, Jose, Marshall wrote:

I've grepped "U?" with no luck. The netlist reports node "U?-?" is
connect to the ground node, to which a large number of other pins
are connected.

I'm pretty sure it's related to a special object like a ground or
io symbol, but I'm kinda fuzzy on how those should be created and
treated.

There is the following code in s_net.c, which is one of the source
files for gnetlist; I looked here for a clue, but I'm unfamiliar
with the method gnetlist uses:
==================================================================== ==
========
/* apply the hierarchy name to the uref */
uref = s_hierarchy_create_uref(pr_current, temp_uref,
hierarchy_tag);

    if (uref && pinnum) {
        string = (char *) malloc(sizeof(char) *
                                 strlen(uref) + strlen(pinnum) +
                                 strlen("  ") + 1);

        sprintf(string, "%s %s", uref, pinnum);
    } else {
        if (pinnum) {
            string = (char *) malloc(sizeof(char) *
                                     strlen(pinnum) +
                                     strlen("POWER") + strlen("  ")
+ 1);
            sprintf(string, "POWER %s", pinnum);
        } else {
            string = (char *) malloc(sizeof(char) *
                                     strlen("U?") + strlen("?") +
                                     strlen("  ") + 1 +
hierarchy_tag_len);

            if (hierarchy_tag) {
                misc =
                    s_hierarchy_create_uref(pr_current, "U?",
                                            hierarchy_tag);
                sprintf(string, "%s ?", misc);
                free(misc);
            } else {
                sprintf(string, "U? ?");
            }

fprintf(stderr, "Missing Attributes (refdes and pin
number)\n");
}
}
==================================================================== ==
========

Marshall

-----Original Message-----
From: owner-geda-user@xxxxxxxx on behalf of John Doty
Sent: Sat 1/7/2006 1:33 PM
To: geda-user@xxxxxxxx
Subject: Re: gEDA-user: gnetlist finding "U?"

Try looking for U? with Attributes->Find Specific Text in gschem. Or
look for it in the file with a text editor.

The Missing Attributes message suggests you may find it useful to run
gsymcheck -vv over your symbol files.

On Jan 7, 2006, at 11:20 AM, Jose, Marshall wrote:

I'm getting the complaint "Missing Attributes (refdes and pin
number)" when I make a BOM with gnetlist, which is annoying enough.
But I'm also finding the node "U?-?" in my netlist when I run
gsch2pcb on the design. Curiously, "U?" is not found in the BOM list.

I'm looking for suggestions as to its cause at this point because
I've run out of clues. Any takers?

Marshall


John Doty              Noqsi Aerospace, Ltd.
jpd@xxxxxxxxxxxxx



<winmail.dat> 

John Doty              Noqsi Aerospace, Ltd.
jpd@xxxxxxxxxxxxx








John Doty              Noqsi Aerospace, Ltd.
jpd@xxxxxxxxxxxxx