Re: [Help-gnucap] Verilog-A(MS) & gnucap

[Leandro Marsó]

2010/10/26  <address@hidden>:
> Hello Andrey,
>
> plese - take a look at
> http://git.gnucapplus.org/gitweb/
>
> 1) gnucap-mot-adms.git
> http://git.gnucapplus.org/gitweb/?p=gnucap-mot-adms.git;a=summary
>
> This is port of NGSpice mot-adms (made by Laurent Lemaitre) to gnucap
>
> gnucap can use (-a switch,  .attach .load commands) plugins, including
> models and can understand Spice, BSIM and NGspice models. This tool
> uses NGspice interface and allows to compile Verilog-A models into C
> code, which then shall be compiled into *.so and then attached and
> used in gnucap.
Hi Genna and all,
regarding the gnucap-mot-adms model compilator, I'm trying to compile
(following the model_add.howto) this simple model:

`define P(txt) (*txt*)
`include "discipline.h"
`include "constants.h"

module vamp (in, out) ;
input in ;
output out ;
voltage out , in ;
parameter real GAIN_V=10.0 from [0:inf] ;
                `P(info="Gain (times)");
analog begin
begin
V(out) <+ GAIN_V * V(in) ;
end
end //analog
endmodule

//
But found this error at the point of doing make -f Makefile.gnucap:

vampguesstopology.c: In function 'vampguesstopology':
vampguesstopology.c:37: error: 'vampinstance' has no member named
'PTR_J_out_in_required'
make: *** [vampguesstopology.o] Error 1

Seems like something is missing other than adding/modifing the
wraper.h and the gnspiceVersion.xml. Just in case, I attach the
modifications I did on them at the end of the mail. I wonder if adms
is intended to do what I am trying to do, instead of device types
(like transistors, resistors, sources, etc), because I don't know
which  device type letter should I choose for an amplifier, or any
other circuit.

Ok, sorry for the long mail, thank you.
Regards,
Leandro.


<!-- This is what I added to ngspiceVersion.xml -->

     <admst:when test="[name='vamp']">
        <admst:if test="[nilled(variable[name='I'])]">
          <admst:value-of select="analog"/>
          <admst:value-of select="."/>
          <admst:new datatype="variable" arguments="%p,I,%p">
            <admst:push into="module/variable" select="." onduplicate="ignore"/>
            <admst:value-to select="sizetype" value="scalar"/>
            <admst:value-to select="type" value="integer"/>
            <admst:value-to select="input" value="yes"/>
            <admst:value-to select="output" value="yes"/>
            <admst:value-to select="parametertype" value="model"/>
            <admst:value-to select="scope" value="global_model"/>
            <admst:new datatype="number" arguments="1">
              <admst:value-to select="scalingunit" value="1"/>
              <admst:value-of select="."/>
              <admst:value-of select="../module"/>
              <admst:new datatype="expression" arguments="%p,%p">
                <admst:value-of select="."/>
                <admst:value-to select="../../default" value="%p"/>
              </admst:new>
            </admst:new>
          </admst:new>
        </admst:if>
      </admst:when>



/* This is the wrap.h file I modified for my vam.va
*/
    extern "C" {
  #include "vampdefs.h"
}

#define info     vampinfo
#define INSTANCE vampinstance
#define MODEL    vampmodel

#define SPICE_LETTER "I"
#define DEVICE_TYPE "ngspice_vamp"
#define MIN_NET_NODES 2
#define MAX_NET_NODES 2
#define INTERNAL_NODES 0
#define MODEL_TYPE "Ivamp|I"
#define UNCONNECTED_NODES uGROUND

static std::string port_names[] = {"in", "out"};
static std::string state_names[] = {};