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Finding all instances connected to net and pin names

rotanudad

Hello, I wish to find all instances which connect to a net/pin name. What I've tried so far:

valid_nets=dbFindNetByName(cv pin_name)

valid_terms=dbFindTermByName(cv pin_name)

CurrTerm=nil

if(valid_nets&&valid_terms then

  CurrTerm = append( valid_nets~>instTerms valid_terms~>nets->instTerms )

else

if( valid_terms then

  CurrTerm = valid_terms~>nets->instTerms

) if( valid_nets then

  CurrTerm = valid_nets->instTerms

)

)

foreach(instTerm CurrTerm

  mylib=instTerm~>inst~>libName

  mycell=instTerm~>inst~>cellName

  cell=ddGetObj(mylib mycell)

...

However this does not get me all the cell instances in my current view... (missing certain instances as well as duplicate cellviews) as well, I need to get the name of the connected net from the current instance into the found instance(external net name to internal net name).

Thanks

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  • Marben

    Hi rotanudad,

    This was solved a long time ao.

    Try to search in google is useful.

    Anyway, code is like this.


    /*************************************************************************************************************
    Purpose       : Displays an elemements lists that are connected in a selected net or wire  in the schematic
                    and higlights all its connection. It can be use for tracing connections in schematic.
    Process       : Any process
    Environment   : VXL schematic editor , this skill file can also be run in VXL layout editor.
    How to run    : 1.Enter in CIW, load("/home/marben/SKILL_VXL/net_connections.il")
                    2.Select a portion of net or wire in the schematic window, then press 2 in the keyboard.
                    3.All elements connected to that net will be automatically displayed in a text file,
                      netConnection_layout.txt will be automatically created in user's VXl directory.
    Function Name : net_selected()
    Language      : SKILL
    Date created  : January 8, 2019
    Author        : Marben F. Orallo  
    Added         : creates a net probe

    *************************************************************************************************************/




    ;hiSetBindKey("Command Interpreter" "<Key>2" "net_selected() ")
    hiSetBindKey("Layout" "<Key>2" "net_selected()")
    hiSetBindKey("Schematics" "<Key>2" "net_selected()" )




    procedure(select_side()
     foreach(fig geGetSelSet()
      net=fig~>net              
     ) ;for
                  
    foreach(fig net~>figs geSelectFig(fig))  )              





    procedure(net_selected()
     csh("touch ./netConnection_layout.txt")
     outPort = outfile("./netConnection_layout.txt")
     foreach(fig geGetSelSet()
      net=fig~>net
      when(net
       printf("net %s is connected to\n" net~>name)
       foreach(instTerm net~>instTerms
        printf("%s.%s " instTerm~>inst~>name instTerm~>name)   
       ) ;for
      printf("\n")
      ) ;when
         
      fprintf(outPort "\n     Net \"%s\" schematic connection are :\n" net~>name )
      ;fprintf(outPort "net %s is connected to\n" net~>name)  
           
      foreach(fig geGetSelSet()
       net=fig~>net
       when(net      
        foreach(instTerm net~>instTerms
         fprintf(outPort "     Pin %s of instance name %s , cellname = %s \n"  instTerm~>name instTerm~>inst~>name instTerm~>inst~>cellName)
         ;geEnterAddNetProbe( hiGetCurrentWindow() nil net~>name)
         geAddNetProbe( hiGetCurrentWindow() nil net~>name)

        );for
       ) ;when
      ) ;for
     ) ;for

          
     ; start of outport   
     fprintf(outPort "    \n\n\n        <<<------------------------------------------>>>" )   
     fprintf(outPort "    \n\n               End of schematic net connection list . " )   
     fprintf(outPort "    \n\n        <<<------------------------------------------>>>" )
     close( outPort)
     ;view("./netConnection_layout.txt" list(0:0 500:500) "SCHEMATIC NET CONNECTION")
     ; edit("./netConnection_layout.txt")
     ;hiRegTimer("system("open_net_selected")" 100)
     sleep(3)
     system("gedit netConnection_layout.txt &")
     ; End of outport
     select_side()

    ) ;proc


    Hope it helps,

    Best regards,

    Marben

  • Andrew Beckett
    in reply to Marben

    One other thought - if this is a schematic, there's a new function schTraceNet in IC618/ICADVM181 which could solve this problem...

    Regards,

    Andrew.

Reply
  • Andrew Beckett
    in reply to Marben

    One other thought - if this is a schematic, there's a new function schTraceNet in IC618/ICADVM181 which could solve this problem...

    Regards,

    Andrew.

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