Useful Thoughts and Actions Taken

For my BOM ULP I want to use attribute fields that you can see here.  To do this I need to know how to read an attribute.  The code snippet below does that.  The test attribute name is FUDGE and the test value is VANILLA.   To read attributes you need to know what they are called as you will see below.

dlgMessageBox("Do you want to count the parts?","Yes","No","Maybe");                       //opens a dialog box: no matter what you answer it will count the parts.   It is a joke.

//—— Get the ULP Path ——//

string ULP_Path;
char bkslash = '/';
int pos = strrchr(argv[0], bkslash);

  if (pos >= 0) 
    { 
      ULP_Path = strsub(argv[0], 0, pos + 1);
    }    

//—— This is the loop that gets the parts and writes to file —–//

int cnt=0;

output(ULP_Path + "ListOfParts.txt", "wt")
{  
if (schematic) schematic(S)                                                                //This nested set of loops cycle through all the parts and increment the count each pass through
  {
    S.parts(P)
      {
        P.instances(E)                                                             
          { 
            printf(E.name + "     " + E.value + "     " + P.attribute[“FUDGE”] + "\n");
            cnt++;
          }
      }
  }
 } 
  

string result;
sprintf(result, "The parts count is %d", cnt);
dlgMessageBox(result, "+Yes", "No","Maybe");                                               // display the parts count in a dlgMessageBox
  
exit(0); 

Now it is time to build on the previous examples.  This example does the following:

• Get the path of the User Language Program (ULP)
• It loops through all the parts
• As it loops it appends the part name to a file

dlgMessageBox("Do you want to count the parts?","Yes","No","Maybe");                       //opens a dialog box: no matter what you answer it will count the parts.  

//—— Get the ULP Path ——//

string ULP_Path;
char bkslash = '/';
int pos = strrchr(argv[0], bkslash);

  if (pos >= 0) 
    { 
      ULP_Path = strsub(argv[0], 0, pos + 1);
    }

//—— This is the loop that gets the parts and writes to file —–//

string FileLine;
int cnt=0;

output(ULP_Path + "ListOfParts.txt", "at")
{  
if (schematic) schematic(S)                                                                //This nested set of loops cycle through all the parts and increment the count each pass through
  {
    S.parts(P)
      {
        P.instances(E)                                                             
          {
            printf(FileLine += E.name +"\n");
            cnt++;
          }
      }
  }
 } 
  

string result;
sprintf(result, "The parts count is %d", cnt);
dlgMessageBox(result, "+Yes", "No","Maybe");                                               // display the parts count in a dlgMessageBox
  
exit(0); 

The result will look like this: ListOfParts.txt

If you want to alter anything on the schematic with a User Language Program you will need to output to a command line script file.   The most common thing to do is write it to the same directory that the ULP is in.  To do that you are going to need to know the path of the ULP.  Below is a program that gives you the path of the ULP.

string ULP_Path;
char bkslash = '/';
int pos = strrchr(argv[0], bkslash);

  if (pos >= 0) 
    { 
      ULP_Path = strsub(argv[0], 0, pos + 1);
    }
    
dlgMessageBox(ULP_Path,"aroo","aree");                       //opens a dialog box with the path in the notification area

exit(0);

Script functions required

• Need the script syntax to change a part value.  The command line to issue to change a part value is: value refdes value.  And example would be to change R5's value to 100 you would issue the command:  value r5 100
• Need to add attribute fields to all parts.  Example: Attribute r5 Fudge  adds the fudge attribute. Pops up a window prompting for value of this attribute.  ATTRIBUTE r4  fudge 'vanilla'  is the correct syntax to include the value.
• Need to run a script on libraries to turn on all value fields.  The command line to issue is: value on  while the device is up in the librarie editor.

Requirements for Ideal Bill of Materials

• Need to turn on the value field for all parts.  This will hold the basic resistance, capacitance, inductance values or integrated circuit part number.

BOM Fields

• Item Number: Line item number
• Quantity
• Schematic Value: This is the simple short value shown in the schematic. Short values avoid clutter on the schematic
• Vendor Part Number: Attribute field:  This will hold the catalog part number.  Example Mouser part number 
• Manufacturers Part Number:  Attribute field: Example: Hittite part number
• Internal Part Number: Attribute field:  Example: The company part number that covers all 0.1 uF capacitors
• Description:  Attribute field: Description with specifications:  Example: CAP CER 4.7UF 35V 10% X5R 1210
• Reference Designators: Grouped by value.  
• Package: Need this to ease confirmation of correct purchase: Example: 0603

….. more

This program demonstrates how you access the Schematic object with an Eagle PCB User Language Program – ULP.

dlgMessageBox("Do you want to count the parts?","Yes","No","Maybe");                       //opens a dialog box: no matter what you answer it will count the parts.  

int cnt=0;
if (schematic) schematic(S)                                                                //This nested set of loops cycle through all the parts and increment the count each pass through
  {
    S.parts(P)
      {
        P.instances(E)                                                             
          {
            cnt++;
          }
      }
  }

string result;
sprintf(result, "The parts count is %d", cnt);
dlgMessageBox(result, "+Yes", "No","Maybe");                                               // display the parts count in a dlgMessageBox
  
exit(0);