Re: gEDA-user: autogenerate footprints
I found a small bug in the footgen script. It doesn't bite you, unless you are doing BGAs with more than 39 rows. The ballname() function has a line: ball=rowname[(row/20) - 1] I think it should be: ball=rowname[((row-1)/20) - 1] For smaller BGAs with less than 40 rows, this fix isn't important. If you have a 40 row array, you'll get BY, when you still want AY for 40 (BA for the 41st row). It will bite you again on the 60th, 80th, ... n*20'th rows. Steve John Griessen wrote: Peter Baxendale wrote: there's a short Python program at http://dlharmon.com/geda/footgen.html which I've found very useful. It's easy to understand and customise even if you only have a little bit of understanding of Python. It's really very easy to use and I've generated all my own footprints this way. I've added a few modest bits and pieces to it which I'd be happy to pass on if anybody is interested. Yes, I'm interested to see your mods. How about making a page on gedasymbols.org? Or, if you don't feel like it, is it OK if I put up the mods on http://www.gedasymbols.org/user/john_griessen/? John G The best way would be to get them integrated into the original rather than having several copies floating around. I have been slow about getting patches and bugfixes integrated into the script, but I will try to get it done sometime if you would like to send it to me. I have had one bugfix for omitballs on BGA in my inbox for months. I have also mentioned doing a CGI interface to footgen, and am still planning on doing that in the near future unless someone else would like to take on that task. -- Darrell Harmon http://dlharmon.com ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
Re: gEDA-user: autogenerate footprints
John Griessen wrote: Peter Baxendale wrote: there's a short Python program at http://dlharmon.com/geda/footgen.html which I've found very useful. It's easy to understand and customise even if you only have a little bit of understanding of Python. It's really very easy to use and I've generated all my own footprints this way. I've added a few modest bits and pieces to it which I'd be happy to pass on if anybody is interested. Yes, I'm interested to see your mods. How about making a page on gedasymbols.org? Or, if you don't feel like it, is it OK if I put up the mods on http://www.gedasymbols.org/user/john_griessen/? John G ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user Most of the modifications are now in the version at http://dlharmon.com/geda/footgen.html. See the comments at the beginning of the code for details. I did drop the part that offsets the part width on by 30 mils to maintain compatibility with old files. I also applied a few bugfixes that had been sent to me. Any future features or bugfixes are welcome. Darrell Harmon ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
Re: gEDA-user: autogenerate footprints
Yeah, great idea... is there any standard Perl Script under svn that most people use? As well as Perl, there's a short Python program at http://dlharmon.com/geda/footgen.html which I've found very useful. It's easy to understand and customise even if you only have a little bit of understanding of Python. It's really very easy to use and I've generated all my own footprints this way. I've added a few modest bits and pieces to it which I'd be happy to pass on if anybody is interested. ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
Re: gEDA-user: autogenerate footprints
John Griessen wrote: Peter Baxendale wrote: there's a short Python program at http://dlharmon.com/geda/footgen.html which I've found very useful. It's easy to understand and customise even if you only have a little bit of understanding of Python. It's really very easy to use and I've generated all my own footprints this way. I've added a few modest bits and pieces to it which I'd be happy to pass on if anybody is interested. Yes, I'm interested to see your mods. How about making a page on gedasymbols.org? Or, if you don't feel like it, is it OK if I put up the mods on http://www.gedasymbols.org/user/john_griessen/? John G The best way would be to get them integrated into the original rather than having several copies floating around. I have been slow about getting patches and bugfixes integrated into the script, but I will try to get it done sometime if you would like to send it to me. I have had one bugfix for omitballs on BGA in my inbox for months. I have also mentioned doing a CGI interface to footgen, and am still planning on doing that in the near future unless someone else would like to take on that task. -- Darrell Harmon http://dlharmon.com ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
gEDA-user: autogenerate footprints
From : http://geda.seul.org/wiki/geda:pcb_tips Some people write Perl scripts to autogenerate footprints. Yeah, great idea... is there any standard Perl Script under svn that most people use? ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
Re: gEDA-user: autogenerate footprints
Yeah, great idea... is there any standard Perl Script under svn that
most people use?
I have some perl scripts on gedasymbols you can copy routines out of.
There isn't a standard perl script because that's not why people use
perl - each script is custom. At best, you might be able to cobble
together a useful set of library functions which you'd call from perl.
Here's an example of a custom perl script to generate footprints. It
builds a quad flat pack style footprint. There isn't much in here
that's reusable, but you can see that it's easy to tweak it to change
the generated footprint.
#!/usr/bin/perl
# -*- perl -*-
$e = 0.50;
$vpins = 25;
$hpins = 25;
$b2 = 0.225;
$i2 = 0.9 + 0.4;
$out = 1.2;
$pin = 1;
$vy = ($vpins-1) * $e;
$hx = ($hpins-1) * $e;
print Element[\\ \TQFP-$vpinsx$hpins-$e\ \\ \\ 0 0 0 0 0 100 \\]
(\n;
for ($i=0; $i$vpins; $i++) {
pad(0, $e * $i, -1, 0);
$pin ++;
}
for ($i=0; $i$hpins; $i++) {
pad($e * $i, $vy, 0, 1);
$pin ++;
}
for ($i=0; $i$hpins; $i++) {
pad($hx, $vy - $e * $i, 1, 0);
$pin ++;
}
for ($i=0; $i$hpins; $i++) {
pad($hx - $e * $i, 0, 0, -1);
$pin ++;
}
sub pad {
my ($x, $y, $dx, $dy) = @_;
$x += $dx * ($out + $b2/2);
$y += $dy * ($out + $b2/2);
$x2 = $x + $dx * ($i2 - $b2);
$y2 = $y + $dy * ($i2 - $b2);
printf(\tPad[%d %d %d %d %d %d %d \%s\ \%s\ \square\]\n,
m($x), m($y), m($x2), m($y2),
m($b2), m($e*0.51-$b2), m(($e+2*$b2)/3),
$pin, $pin);
}
sub m {
my ($mm) = @_;
return int($mm / 0.000254);
}
print )\n;
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Re: gEDA-user: autogenerate footprints
On 1/2/07, Ostheller, Joel A. [EMAIL PROTECTED] wrote: From : http://geda.seul.org/wiki/geda:pcb_tips Some people write Perl scripts to autogenerate footprints. Yeah, great idea... is there any standard Perl Script under svn that most people use? I have some stuff at --- http://www.luciani.org/geda/geda-index.html (* jcl *) -- http://www.luciani.org ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
RE: gEDA-user: autogenerate footprints
Thanks for the examples DJ and John...
Joel Ostheller
Digital Hardware Design Engineer
Email : [EMAIL PROTECTED]
Phone : 253.867.0407
-Original Message-
From: [EMAIL PROTECTED] [mailto:geda-user-
[EMAIL PROTECTED] On Behalf Of DJ Delorie
Sent: Tuesday, January 02, 2007 2:54 PM
To: geda-user@moria.seul.org
Subject: Re: gEDA-user: autogenerate footprints
Yeah, great idea... is there any standard Perl Script under svn that
most people use?
I have some perl scripts on gedasymbols you can copy routines out of.
There isn't a standard perl script because that's not why people use
perl - each script is custom. At best, you might be able to cobble
together a useful set of library functions which you'd call from perl.
Here's an example of a custom perl script to generate footprints. It
builds a quad flat pack style footprint. There isn't much in here
that's reusable, but you can see that it's easy to tweak it to change
the generated footprint.
#!/usr/bin/perl
# -*- perl -*-
$e = 0.50;
$vpins = 25;
$hpins = 25;
$b2 = 0.225;
$i2 = 0.9 + 0.4;
$out = 1.2;
$pin = 1;
$vy = ($vpins-1) * $e;
$hx = ($hpins-1) * $e;
print Element[\\ \TQFP-$vpinsx$hpins-$e\ \\ \\ 0 0 0 0 0 100
\\] (\n;
for ($i=0; $i$vpins; $i++) {
pad(0, $e * $i, -1, 0);
$pin ++;
}
for ($i=0; $i$hpins; $i++) {
pad($e * $i, $vy, 0, 1);
$pin ++;
}
for ($i=0; $i$hpins; $i++) {
pad($hx, $vy - $e * $i, 1, 0);
$pin ++;
}
for ($i=0; $i$hpins; $i++) {
pad($hx - $e * $i, 0, 0, -1);
$pin ++;
}
sub pad {
my ($x, $y, $dx, $dy) = @_;
$x += $dx * ($out + $b2/2);
$y += $dy * ($out + $b2/2);
$x2 = $x + $dx * ($i2 - $b2);
$y2 = $y + $dy * ($i2 - $b2);
printf(\tPad[%d %d %d %d %d %d %d \%s\ \%s\ \square\]\n,
m($x), m($y), m($x2), m($y2),
m($b2), m($e*0.51-$b2), m(($e+2*$b2)/3),
$pin, $pin);
}
sub m {
my ($mm) = @_;
return int($mm / 0.000254);
}
print )\n;
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