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From: | "=?utf-8?Q?Stephan_B=C3=B6ttcher?= (geda AT psjt DOT org) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com> |
To: | <geda-user AT delorie DOT com> |
Subject: | Re: [geda-user] lepton netlist |
References: | <s6nil076f0t DOT fsf AT psjt DOT org> |
<20240424112803 DOT C0DAC81AB8A3 AT turkos DOT aspodata DOT se> | |
<s6njzknc4rc DOT fsf AT psjt DOT org> | |
<20240424134027 DOT DA8B681AB8A3 AT turkos DOT aspodata DOT se> | |
<s6n8r12d6le DOT fsf AT psjt DOT org> | |
<20240424211535 DOT 2838281AB8A3 AT turkos DOT aspodata DOT se> | |
Date: | Thu, 25 Apr 2024 20:50:48 +0200 |
In-Reply-To: | <20240424211535.2838281AB8A3@turkos.aspodata.se> |
(geda-user AT delorie DOT com's message of "Wed, 24 Apr 2024 23:15:35 +0200 | |
(CEST)") | |
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"karl AT aspodata DOT se [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com> writes: > Stephan: > ... >> >> My patch was doing simple text substitutions in attributes after the >> >> hierarchy was built, so the parameters cannot effect the netlist >> >> itself, just some output. I used it only with value= attributes. That >> >> would be the minimal functionality. >> > >> > So, it would be the bom list and the like that would be affected ? >> > In that case an external program could do the transform, so you do your >> > usual stuff and then as a final step you modify some output files with a >> > separate program. Would that be fine (at least till it is integrated >> > into lepton) ? >> >> I extract my boms from the .pcb file, and usually there are a lot of >> handwritten changes before it goes to a technician, so it is not >> essential to have this functionally in the netlister. When the bom now >> says value=$R2 it is at least obvious where I need to add information :-) > ... > > Soo, what do you use the substitution for ? My boards often have a large number of instances of the same circuit, with different gain configurations that are configured with parameter attributes attached to the subschematics symbol instances to change some resistor values. And I have schematics in my big monorepro that are reused a lot across different boards with some parameters. For example, low noise adjustable LDO regulators. > /// > > My thoughts is more in line with > > in a page > C ... source_symbol.sym > { > T ... > source=led_resistor > input_voltage=12 > } > > and its subpage > C ... led.fp > { > T ... > led_voltage=2 > led_current=0.020 > } > C .... resistor.fp > { > T ... > value=E6((input_voltage - led_voltage) / led_current) > } > > where E6() chooses a nearest value in the E6 series, or > if you like, the available values of som component serie. > > Also nice would it be if I could use units, like in > led_current=20mA or at least 20m. > > I do have code for unit prefixes and E6 etc. in > https://aspodata.se/git/openhw/bin/Prefix.pm > https://aspodata.se/git/openhw/bin/Eseries.pm > > /// > > Regarding bom's, I have > https://aspodata.se/git/openhw/bin/GnetBom2.pl > which converts lepton-netlist -g bom2 output file > to something like > (i.e. sorted by device, footprint, component value): > > Capacitor ipc7351b_2012Ar.fp 1n 1 aC3 > Capacitor ipc7351b_2012Ar.fp 10n 1 3C2 > Capacitor ipc7351b_2012Ar.fp 15n 5% 8 t0C21 ... > Capacitor ipc7351b_2012Ar.fp 33n 5% 8 t0C11 ... > Capacitor ipc7351b_2012Ar.fp 100n 19 12C2 ... > Capacitor ipc7351b_2012Ar.fp 1u 10 12C1 ... > > Regards, > /Karl Hammar > -- Stephan
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