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From:	"karl AT aspodata DOT se [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
To:	geda-user AT delorie DOT com
Subject:	[geda-user] Schematic attributes: device
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Message-Id:	<20220826110318.4823680724AA@turkos.aspodata.se>
Date:	Fri, 26 Aug 2022 13:03:18 +0200 (CEST)
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Reply-To:	geda-user AT delorie DOT com

So, now I'm trying to to through attributes one at a time and see if I
can understand them better.

 We have:
http://wiki.geda-project.org/geda:master_attributes_list#device
https://graahnul-grom.github.io/ref-manual/lepton/device-attribute.html

///

There is a typo in the geda text:
 Do not confuse this attribute with just having a text label which the device name.
It should probaby say "with the device name."

///

It seems to be required and made invisible, it doesn't say what is the
point of having this and why I should have it in my symbols.

So,
. which backends are using this ?
. what kind of values do they exspect ?
. can we make a list of legal values ?

///

I have decided to have it visible and use it for bom sorting, as in:

device        footprint                   value         refdes

Capacitor     m2012_a.fp                  16p            2 C1 C2
Capacitor     m2012_a.fp                  10n            2 3C2 _C2
CapacitorPol  panasonic_ellyt_063x112c.fp 33u            8 5C3 C3 C4
Connector     sil_apem_3xxx.fp            APEM_31xx      1 X2
ConnectorJTAG Hsuan_Mao_C3000_20.fp       ARM_JTAG20     1 jX1
Crystal       txc_hc49sc.fp               6MHz           1 XTL1
Diode         jedec_DO-41_10c.fp          1N400x         4 5D1 5D2 5D3
DiodeSchottky sod323_nxp_a.fp             RB751V40       1 3D1
DiodeZener    q_mini_melf.fp              3.3V          11 D2 jD1 jD2
DriverRS232   ic-soic-16-w.fp             ADM1181A       3 arU1 brU1
MCU           LQFP48_7.fp                 STM32F100CxT   1 _U1
Mechanical    fibox_tempo_TA191209T_0p.fp TA191209T      1 M1
OpAmp         so_14_a.fp                  TS514AID       1 U2
Optocoupler   DIP04c.fp                   EL817          6 aU2 aU3 bU2
PwrRegDcDc    xppower_il.fp               IL0505S        3 aU1 bU1 cU1
PwrRegLin     to220.fp                    LM317          1 5U1
Resistor      m1608_a.fp                  3.3k           4 R28 R30 R32
Switch        eao_61-9821.1.fp            61-8410.22     2 X3 X4

Is that wrong ?

Regards,
/Karl Hammar

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