How can I send a command "display none 17" from inside a ULP?

Hi Leonard,

I suspect you may need to have a script file that sets the visible layers and execute the script from the ULP at the relevant point.

If you have eg. make_my_layers_visible.scr  with the line

DISPLAY NONE 17 20 31 121

in it and then in the ULP use,

system("SCRIPT ' "make_my_layers_visible.scr" ';");

I haven't tried this so no guarantee it'll work like this but it's what I'd try if it was me

HTH,

On 02/18/2014 05:47 PM, Leonard Averyt wrote:

How can I send a command "display none 17" from inside a ULP?

I'm trying to create a ULP that will automatically generate a DXF file

with only specific layers turned on.

I want these hard coded inside the ulp.

I'm basicly modifying the DXF.ulp to only generate layers 17,20,31,121

 

--

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Like this:

string cmd[];

int idx = 0;

if (board)

{

  board(B)

  {

    cmd[idx++] = "DISPLAY NONE 170;";

    cmd[idx++] = "GRID ON;";

  }

}

exit(strjoin(cmd, '\n'));

On 02/19/2014 07:10 AM, Eric Stevens wrote:

On 02/18/2014 05:47 PM, Leonard Averyt wrote:

How can I send a command "display none 17" from inside a ULP?

I'm trying to create a ULP that will automatically generate a DXF file

with only specific layers turned on.

I want these hard coded inside the ulp.

I'm basicly modifying the DXF.ulp to only generate layers 17,20,31,121

 

--

To view any images and attachments in this post, visit:

http://www.element14.com/community/message/104172

 

Like this:

 

string cmd[];

 

int idx = 0;

 

if (board) {

    //

    // Make sure the correct layers and grid are set going into this ULP.

    // If the first argument is not "gridIsSet", then we need to set

    // the display and grid environment and re-invoke this ULP.

    // This assumes that the name of this ULP is "myDXF.ulp".

    //

    if (argv[1] != "gridIsSet") {

        // Setup the display, the grid, and re-invoke this ULP with an

    argument

       exit("display none 17 20 31 121;\ngrid on;\nrun myDXF gridIsSet;\n");

    }

  board(B)

  {

 

 

       // Other code to produce a DXF goes here.

       ...

 

  }

}

 

Daniel Wainwright wrote:

Hi Leonard,

I suspect you may need to have a script file that sets the visible

layers and execute the script from the ULP at the relevant point.

 

If you have eg. make_my_layers_visible.scr  with the line

DISPLAY NONE 17 20 31 121

in it and then in the ULP use,

system("SCRIPT ' "make_my_layers_visible.scr" ';");

 

I haven't tried this so no guarantee it'll work like this but it's what

I'd try if it was me

no, that won't work. The system command launches other applications

outside of eagle. It can not control the running instance of eagle.

scripts or command strings can only be executed using the exit

command.

--

Lorenz

Thanks for pointing that out, seems rather obvious in hindsight.

How does control return to the ULP after eagle executes the command given in the exit() function though?

soldersplash wrote:

How does control return to the ULP after eagle executes the command given in the exit() function though?

It doesn't. 

Why not do things the other way around and run a script first and call the ULP from that, something like:

display none 17;

run dxf.ulp;

display last;

You could even assign that to a button with the menu command.  Or did I completely miss the point?

I need my glasses adjusted or something....

I now see the 'run MyDXF' bit in:-

Chuck

exit("display none 17 20 31 121;\ngrid on;\nrun myDXF gridIsSet;\n");

I haven't tried anything but the following. It does turn off the layers I don't want but exits the UPL. I need to add the check and reinvoke the ulp  like chuck suggested.

If that doesn't work I may just do a script as was suggested.

//
// Main program: / FROM original DXF.ULP by Dr. L. Rossipaul Verlagsgesellschaft m.b.H
//
string OutputFileName;
int DoDialog = argc == 1;
string FileNameSuffix;

for (int i = 1; i < argc; i++) {
    if      (argv[i] == "-s") FileNameSuffix = argv[++i];
    else if (argv[i] == "-u") {
                                string u = strupr(argv[++i]);
                                if (u) {
                                   if (u == "MM")
                                      Unit = MM;
                                   else if (u == "INCH")
                                      Unit = INCH;
                                   else {
                                      dlgMessageBox(usage + tr("<hr><b>ERROR: unknown unit: ") + argv[i] + "</b>");
                                      exit(1);
                                      }
                                   }
                                else {
                                   dlgMessageBox(usage + tr("<hr><b>ERROR: missing <i>unit</i></b>"));
                                   exit(1);
                                   }
                              }
    else if (argv[i] == "-a") AlwaysVectorFont = YES;
    else if (argv[i] == "-w") UseWireWidths = YES;
    else if (argv[i] == "-f") FillAreas = YES;
    else {
       dlgMessageBox(usage + tr("<hr><b>ERROR: unknown option: ") + argv[i] + "</b>");
       exit(1);
       }
    }
string cmd[];
int idx = 0;
if (board)
  board(B) {
  cmd[idx++] = "DISPLAY NONE 17 20 31 121;";
  cmd[idx++] = "GRID ON;";
  exit(strjoin(cmd, '\n'));OutputFileName = B.name;/ <- ********* always exits the ULP here.
     B.layers(L) {
       string s = L.name;
       if (L.visible && s[0] == '$') {
          VisibleSupplyLayer = YES;
          IsSupplyLayer[L.number] = YES;
          }
       }
     }

else if (schematic)
   schematic(SCH) OutputFileName = SCH.name;

exit() will always exit the running ULP. The reentry method Chuck suggested is a good approach to running multiple process steps via a single ULP. I wouldn't split up a chunk of code unless you plan on reusing the SCR for other purposes. Why have to maintain two files if you don't need to.

BTW, you don't need the cmd[idx++] = "GRID ON;"; statement if you don't need it. It was just part an example on building command strings.

Eric

On 02/20/2014 12:23 PM, Leonard Averyt wrote:

if (board)

   board(B) {

   cmd[idx++] = "DISPLAY NONE 17 20 31 121;";

   cmd[idx++] = "GRID ON;";

   exit(strjoin(cmd, '\n'));OutputFileName = B.name;/ *<- *********

always exits the ULP here.*

      B.layers(L) {

        string s = L.name;

        if (L.visible && s[0] == '$') {

           VisibleSupplyLayer = YES;

           IsSupplyLayer[L.number] = YES;

           }

        }

      }

 

else if (schematic)

    schematic(SCH) OutputFileName = SCH.name;

Thanks, I'm really weak with C and C type programming, I'm a ladder guy normally but dabble. I can usually plagiarize and modify code to make what I want, just not good at overall picture etc.
Thanks everyone, i'll try some of these and get back