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Have a question about CadSoft EAGLE?  Ask our Expert, Richard! (Archive)

nlarson

This thread is now locked - but you can still ask Richard by posting your questions here.  If you'd rather browse other member's questions you can read the CadSoft EAGLE Forums for past questions and answers. Enjoy!

 

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Richard Hammerl

Richard is an engineer with 16 years experience in EAGLE customer support and is waiting for your questions.

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  • Hi All,

                 I have downloaded new eagle V6 free version, and I tried one of my exisisting design  which is done in 5.9.0 , But afterwards I am not able to open SCH & BRD  in 5.9 .... Any idea how to do it...?

  • in reply to e14 Contributor

    I don't think that's possible... 6 isn't backwards compatible. Eagle's never been very good at that. Hope you've got a backup.

    http://www.element14.com/community/thread/15752?tstart=0

  • in reply to e14 Contributor

    Hi All,

                 I have  downloaded new eagle V6 free version, and I tried one of my exisisting  design  which is done in 5.9.0 , But afterwards I am not able to open  SCH & BRD  in 5.9 .... Any idea how to do it...?

    andyhunti wrote:

     

    I don't think that's possible... 6 isn't backwards compatible. Eagle's never been very good at that. Hope you've got a backup.

    http://www.element14.com/community/thread/15752?tstart=0

    Talking about backup files. There should be files for boards with the extension .b#1 up to .b#9 or the same for schematics with extension .s#1.... .s#9. You have to rename the appropriate files so that they have a valid .brd or .sch extension.

     

    Regards,

    Richard

  • in reply to Richard_H

    I study the ULP Bill of Materials and i don't know what this line is exactly doing:

    sprintf(s, "%s%-*s", line ? " " : "", Width[i], a[i]);

    What about the "%s%-*s" line ? " " : "" part of the line?

    I would be grateful if you could explain it to me that how is it works.

    I can help a bit here, the "? :" is called a ternary operator. It's a programmer's shorthand for an if statement (if true, do something, else do something else)
    The format is  <test> ? <if true> : <if false>
    sprintf is a string formatting function, s is the string, "%s%-*s" is the format for the string operation.
    The ternary operator is returning a space if "line" is true, or nothing if "line" is false.
    So at a glance, this line inserts/writes or removes a space into the string if "line" is true.

     

    Hope this helps! I don't know how it's used in the context of the ULP, but this may give you a good idea to start from.

Reply
  • in reply to Richard_H

    I study the ULP Bill of Materials and i don't know what this line is exactly doing:

    sprintf(s, "%s%-*s", line ? " " : "", Width[i], a[i]);

    What about the "%s%-*s" line ? " " : "" part of the line?

    I would be grateful if you could explain it to me that how is it works.

    I can help a bit here, the "? :" is called a ternary operator. It's a programmer's shorthand for an if statement (if true, do something, else do something else)
    The format is  <test> ? <if true> : <if false>
    sprintf is a string formatting function, s is the string, "%s%-*s" is the format for the string operation.
    The ternary operator is returning a space if "line" is true, or nothing if "line" is false.
    So at a glance, this line inserts/writes or removes a space into the string if "line" is true.

     

    Hope this helps! I don't know how it's used in the context of the ULP, but this may give you a good idea to start from.

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