<!--
  EAGLE version 8.2.2 DTD
  Copyright (c) 2017 Autodesk
  http://www.autodesk.com

  This file describes the XML file format used by EAGLE version 8.2.2,
  hereafter referred to as the "EAGLE File Format".
  It is made available under the creative commons "CC BY-ND 3.0" license
  (see http://creativecommons.org/licenses/by-nd/3.0).
  You may use this file to implement a program that reads and/or writes files
  in the EAGLE File Format. If your program writes files in the EAGLE File
  Format, these files must be readable by EAGLE version 8.2.2
  without any error messages or warnings.
-->

<!-- ### Entity definitions ############################################### -->

<!ENTITY % Int               "CDATA"> <!-- an integer number -->
<!ENTITY % Real              "CDATA"> <!-- a real number -->
<!ENTITY % String            "CDATA"> <!-- a character string -->
<!ENTITY % Bool              "(no | yes)">
<!ENTITY % Coord             "%Real;"> <!-- coordinates, given in millimeters -->
<!ENTITY % Dimension         "%Real;"> <!-- dimensions, given in millimeters -->
<!ENTITY % Layer             "%Int;"> <!-- layer number -->
<!ENTITY % GridUnit          "(mic | mm | mil | inch)">
<!ENTITY % GridStyle         "(lines | dots)">
<!ENTITY % WireStyle         "(continuous | longdash | shortdash | dashdot)">
<!ENTITY % WireCap           "(flat | round)">
<!ENTITY % WireCurve         "%Real;"> <!-- curvature of a wire; allowed range: -359.9..359.9 -->
<!ENTITY % Class             "%Int;"> <!-- net class -->
<!ENTITY % PadShape          "(square | round | octagon | long | offset)">
<!ENTITY % ViaShape          "(square | round | octagon)">
<!ENTITY % TextFont          "(vector | proportional | fixed)">
<!ENTITY % Rotation          "CDATA"> <!-- rotation of an object; allowed range: [MSR]0..359.9 -->
<!ENTITY % AttributeDisplay  "(off | value | name | both)">
<!ENTITY % Extent            "%String;"> <!-- the layers a via or airwire extends through, given as "topmost-bottommost" -->
<!ENTITY % PolygonPour       "(solid | hatch | cutout)">
<!ENTITY % PinVisible        "(off | pad | pin | both)">
<!ENTITY % PinLength         "(point | short | middle | long)">
<!ENTITY % PinDirection      "(nc | in | out | io | oc | pwr | pas | hiz | sup)">
<!ENTITY % PinFunction       "(none | dot | clk | dotclk)">
<!ENTITY % PortDirection     "(nc | in | out | io | oc | pwr | pas | hiz)">
<!ENTITY % GateAddLevel      "(must | can | next | request | always)">
<!ENTITY % ContactRoute      "(all | any)">
<!ENTITY % DimensionType     "(parallel | horizontal | vertical | radius | diameter | leader)">
<!ENTITY % Severity          "(info | warning | error)">
<!ENTITY % Align             "(bottom-left | bottom-center | bottom-right | center-left | center | center-right | top-left | top-center | top-right)">
<!ENTITY % VerticalText      "(up | down)">
<!ENTITY % Urn               "%String;"> <!-- URN of the form "urn:adsk.eagle:library:1" -->

<!-- ### Drawing definitions ############################################## -->

<!ELEMENT eagle (compatibility?, drawing, compatibility?)>
<!ATTLIST eagle
          version       %Real;         #REQUIRED
          >
          <!-- version: The EAGLE program version that generated this file, in the form V.RR -->

<!ELEMENT compatibility (note)*>

<!ELEMENT note (#PCDATA)>
<!ATTLIST note
          version       %Real;         #REQUIRED
          severity      %Severity;     #REQUIRED
          >
          <!-- version: The EAGLE program version that introduced this compatibility note -->

<!ELEMENT drawing (settings?, grid?, layers, (library | schematic | board))>

<!ELEMENT library (description?, packages?, symbols?, devicesets?)>
<!ATTLIST library
          name          %String;       #REQUIRED
          urn           %Urn;          ""
          >
          <!-- name: Only in libraries used inside boards or schematics -->
          <!-- urn: Only in online libraries used inside boards or schematics -->

<!ELEMENT schematic (description?, libraries?, attributes?, variantdefs?, classes?, modules?, parts?, sheets?, errors?)>
<!ATTLIST schematic
          xreflabel     %String;       #IMPLIED
          xrefpart      %String;       #IMPLIED
          >

<!ELEMENT module (description?, ports?, variantdefs?, parts?, sheets?)>
<!ATTLIST module
          name          %String;       #REQUIRED
          prefix        %String;       ""
          dx            %Coord;        #REQUIRED
          dy            %Coord;        #REQUIRED
          >

<!ELEMENT board (description?, plain?, libraries?, attributes?, variantdefs?, classes?, designrules?, autorouter?, elements?, signals?, errors?)>
<!ATTLIST board
          limitedwidth  %Dimension;    #IMPLIED
          >

<!-- ### High level objects ############################################### -->

<!ELEMENT sheet (description?, plain?, moduleinsts?, instances?, busses?, nets?)>

<!ELEMENT package (description?, (polygon | wire | text | dimension | circle | rectangle | frame | hole | pad | smd)*)>
<!ATTLIST package
          name          %String;       #REQUIRED
          library_version  %Int;       ""
          >
          <!-- library_version: Only in online libraries used inside boards or schematics -->

<!ELEMENT symbol (description?, (polygon | wire | text | dimension | pin | circle | rectangle | frame)*)>
<!ATTLIST symbol
          name          %String;       #REQUIRED
          library_version  %Int;       ""
          >
          <!-- library_version: Only in online libraries used inside boards or schematics -->

<!ELEMENT deviceset (description?, gates, devices)>
<!ATTLIST deviceset
          name          %String;       #REQUIRED
          prefix        %String;       ""
          uservalue     %Bool;         "no"
          library_version  %Int;       ""
          >
          <!-- library_version: Only in online libraries used inside boards or schematics -->

<!ELEMENT device (connects?, technologies?)>
<!ATTLIST device
          name          %String;       ""
          package       %String;       #IMPLIED
          >

<!ELEMENT bus (segment)*>
<!ATTLIST bus
          name          %String;       #REQUIRED
          >

<!ELEMENT net (segment)*>
<!ATTLIST net
          name          %String;       #REQUIRED
          class         %Class;        "0"
          >

<!ELEMENT segment (pinref | portref | wire | junction | label)*>
          <!-- 'pinref' and 'junction' are only valid in a <net> context -->

<!ELEMENT signal (contactref | polygon | wire | via)*>
<!ATTLIST signal
          name          %String;       #REQUIRED
          class         %Class;        "0"
          airwireshidden %Bool;        "no"
          >

<!-- ### Basic objects #################################################### -->

<!ELEMENT moduleinst (attribute)*>
<!ATTLIST moduleinst
          name          %String;       #REQUIRED
          module        %String;       #REQUIRED
          modulevariant %String;       ""
          x             %Coord;        #REQUIRED
          y             %Coord;        #REQUIRED
          offset        %Int;          "0"
          smashed       %Bool;         "no"
          rot           %Rotation;     "R0"
          >
          <!-- rot: Only 0, 90, 180 or 270 -->

<!ELEMENT variantdef EMPTY>
<!ATTLIST variantdef
          name          %String;       #REQUIRED
          current       %Bool;         "no"
          >

<!ELEMENT variant EMPTY>
<!ATTLIST variant
          name          %String;       #REQUIRED
          populate      %Bool;         "yes"
          value         %String;       #IMPLIED
          technology    %String;       #IMPLIED
          >
          <!-- technology: Only in part context -->

<!ELEMENT gate EMPTY>
<!ATTLIST gate
          name          %String;       #REQUIRED
          symbol        %String;       #REQUIRED
          x             %Coord;        #REQUIRED
          y             %Coord;        #REQUIRED
          addlevel      %GateAddLevel; "next"
          swaplevel     %Int;          "0"
          >

<!ELEMENT wire EMPTY>
<!ATTLIST wire
          x1            %Coord;        #REQUIRED
          y1            %Coord;        #REQUIRED
          x2            %Coord;        #REQUIRED
          y2            %Coord;        #REQUIRED
          width         %Dimension;    #REQUIRED
          layer         %Layer;        #REQUIRED
          extent        %Extent;       #IMPLIED
          style         %WireStyle;    "continuous"
          curve         %WireCurve;    "0"
          cap           %WireCap;      "round"
          >
          <!-- extent: Only applicable for airwires -->
          <!-- cap   : Only applicable if 'curve' is not zero -->

<!ELEMENT dimension EMPTY>
<!ATTLIST dimension
          x1            %Coord;        #REQUIRED
          y1            %Coord;        #REQUIRED
          x2            %Coord;        #REQUIRED
          y2            %Coord;        #REQUIRED
          x3            %Coord;        #REQUIRED
          y3            %Coord;        #REQUIRED
          layer         %Layer;        #REQUIRED
          dtype         %DimensionType; "parallel"
          width         %Dimension;    #REQUIRED
          extwidth      %Dimension;    "0"
          extlength     %Dimension;    "0"
          extoffset     %Dimension;    "0"
          textsize      %Dimension;    #REQUIRED
          textratio     %Int;          "8"
          unit          %GridUnit;     "mm"
          precision     %Int;          "2"
          visible       %Bool;         "no"
          >

<!ELEMENT text (#PCDATA)>
<!ATTLIST text
          x             %Coord;        #REQUIRED
          y             %Coord;        #REQUIRED
          size          %Dimension;    #REQUIRED
          layer         %Layer;        #REQUIRED
          font          %TextFont;     "proportional"
          ratio         %Int;          "8"
          rot           %Rotation;     "R0"
          align         %Align;        "bottom-left"
          distance      %Int;          "50"
          >

<!ELEMENT circle EMPTY>
<!ATTLIST circle
          x             %Coord;        #REQUIRED
          y             %Coord;        #REQUIRED
          radius        %Coord;        #REQUIRED
          width         %Dimension;    #REQUIRED
          layer         %Layer;        #REQUIRED
          >

<!ELEMENT rectangle EMPTY>
<!ATTLIST rectangle
          x1            %Coord;        #REQUIRED
          y1            %Coord;        #REQUIRED
          x2            %Coord;        #REQUIRED
          y2            %Coord;        #REQUIRED
          layer         %Layer;        #REQUIRED
          rot           %Rotation;     "R0"
          >

<!ELEMENT frame EMPTY>
<!ATTLIST frame
          x1            %Coord;       #REQUIRED
          y1            %Coord;       #REQUIRED
          x2            %Coord;       #REQUIRED
          y2            %Coord;       #REQUIRED
          columns       %Int;         #REQUIRED
          rows          %Int;         #REQUIRED
          layer         %Layer;       #REQUIRED
          border-left   %Bool;        "yes"
          border-top    %Bool;        "yes"
          border-right  %Bool;        "yes"
          border-bottom %Bool;        "yes"
          >

<!ELEMENT hole EMPTY>
<!ATTLIST hole
          x             %Coord;        #REQUIRED
          y             %Coord;        #REQUIRED
          drill         %Dimension;    #REQUIRED
          >

<!ELEMENT pad EMPTY>
<!ATTLIST pad
          name          %String;       #REQUIRED
          x             %Coord;        #REQUIRED
          y             %Coord;        #REQUIRED
          drill         %Dimension;    #REQUIRED
          diameter      %Dimension;    "0"
          shape         %PadShape;     "round"
          rot           %Rotation;     "R0"
          stop          %Bool;         "yes"
          thermals      %Bool;         "yes"
          first         %Bool;         "no"
          >

<!ELEMENT smd EMPTY>
<!ATTLIST smd
          name          %String;       #REQUIRED
          x             %Coord;        #REQUIRED
          y             %Coord;        #REQUIRED
          dx            %Dimension;    #REQUIRED
          dy            %Dimension;    #REQUIRED
          layer         %Layer;        #REQUIRED
          roundness     %Int;          "0"
          rot           %Rotation;     "R0"
          stop          %Bool;         "yes"
          thermals      %Bool;         "yes"
          cream         %Bool;         "yes"
          >

<!ELEMENT element (attribute*, variant*)>
          <!-- variant* is accepted only for compatibility with EAGLE 6.x files -->
<!ATTLIST element
          name          %String;       #REQUIRED
          library       %String;       #REQUIRED
          library_urn   %Urn;          ""
          package       %String;       #REQUIRED
          value         %String;       #REQUIRED
          x             %Coord;        #REQUIRED
          y             %Coord;        #REQUIRED
          locked        %Bool;         "no"
          populate      %Bool;         "yes"
          smashed       %Bool;         "no"
          rot           %Rotation;     "R0"
          >
          <!-- library_urn: Only in parts from online libraries -->

<!ELEMENT via EMPTY>
<!ATTLIST via
          x             %Coord;        #REQUIRED
          y             %Coord;        #REQUIRED
          extent        %Extent;       #REQUIRED
          drill         %Dimension;    #REQUIRED
          diameter      %Dimension;    "0"
          shape         %ViaShape;     "round"
          alwaysstop    %Bool;         "no"
          >

<!ELEMENT polygon (vertex)*>
          <!-- the vertices must define a valid polygon; if the last vertex is the same as the first one, it is ignored -->
<!ATTLIST polygon
          width         %Dimension;    #REQUIRED
          layer         %Layer;        #REQUIRED
          spacing       %Dimension;    #IMPLIED
          pour          %PolygonPour;  "solid"
          isolate       %Dimension;    #IMPLIED
          orphans       %Bool;         "no"
          thermals      %Bool;         "yes"
          rank          %Int;          "0"
          >
          <!-- isolate: Only in <signal> or <package> context -->
          <!-- orphans: Only in <signal> context -->
          <!-- thermals:Only in <signal> context -->
          <!-- rank:    1..6 in <signal> context, 0 or 7 in <package> context -->

<!ELEMENT vertex EMPTY>
<!ATTLIST vertex
          x             %Coord;        #REQUIRED
          y             %Coord;        #REQUIRED
          curve         %WireCurve;    "0"
          >
          <!-- curve: The curvature from this vertex to the next one -->

<!ELEMENT pin EMPTY>
<!ATTLIST pin
          name          %String;       #REQUIRED
          x             %Coord;        #REQUIRED
          y             %Coord;        #REQUIRED
          visible       %PinVisible;   "both"
          length        %PinLength;    "long"
          direction     %PinDirection; "io"
          function      %PinFunction;  "none"
          swaplevel     %Int;          "0"
          rot           %Rotation;     "R0"
          >

<!ELEMENT part (attribute*, variant*)>
<!ATTLIST part
          name          %String;       #REQUIRED
          library       %String;       #REQUIRED
          library_urn   %Urn;          ""
          deviceset     %String;       #REQUIRED
          device        %String;       #REQUIRED
          technology    %String;       ""
          value         %String;       #IMPLIED
          >
          <!-- library_urn: Only in parts from online libraries -->

<!ELEMENT port EMPTY>
<!ATTLIST port
          name          %String;       #REQUIRED
          side          %Int;          #REQUIRED
          coord         %Coord;        #REQUIRED
          direction     %PortDirection; "io"
          >

<!ELEMENT instance (attribute)*>
<!ATTLIST instance
          part          %String;       #REQUIRED
          gate          %String;       #REQUIRED
          x             %Coord;        #REQUIRED
          y             %Coord;        #REQUIRED
          smashed       %Bool;         "no"
          rot           %Rotation;     "R0"
          >
          <!-- rot: Only 0, 90, 180 or 270 -->

<!ELEMENT label EMPTY>
<!ATTLIST label
          x             %Coord;        #REQUIRED
          y             %Coord;        #REQUIRED
          size          %Dimension;    #REQUIRED
          layer         %Layer;        #REQUIRED
          font          %TextFont;     "proportional"
          ratio         %Int;          "8"
          rot           %Rotation;     "R0"
          xref          %Bool;         "no"
          >
          <!-- rot:  Only 0, 90, 180 or 270 -->
          <!-- xref: Only in <net> context -->

<!ELEMENT junction EMPTY>
<!ATTLIST junction
          x             %Coord;        #REQUIRED
          y             %Coord;        #REQUIRED
          >

<!ELEMENT connect EMPTY>
<!ATTLIST connect
          gate          %String;       #REQUIRED
          pin           %String;       #REQUIRED
          pad           %String;       #REQUIRED
          route         %ContactRoute; "all"
          >

<!ELEMENT technology (attribute)*>
<!ATTLIST technology
          name          %String;       #REQUIRED
          >

<!ELEMENT attribute EMPTY>
<!ATTLIST attribute
          name          %String;       #REQUIRED
          value         %String;       #IMPLIED
          x             %Coord;        #IMPLIED
          y             %Coord;        #IMPLIED
          size          %Dimension;    #IMPLIED
          layer         %Layer;        #IMPLIED
          font          %TextFont;     #IMPLIED
          ratio         %Int;          #IMPLIED
          rot           %Rotation;     "R0"
          display       %AttributeDisplay; "value"
          constant      %Bool;         "no"
          >
          <!-- display: Only in <element> or <instance> context -->
          <!-- constant:Only in <device> context -->

<!ELEMENT pinref EMPTY>
<!ATTLIST pinref
          part          %String;       #REQUIRED
          gate          %String;       #REQUIRED
          pin           %String;       #REQUIRED
          >

<!ELEMENT contactref EMPTY>
<!ATTLIST contactref
          element       %String;       #REQUIRED
          pad           %String;       #REQUIRED
          route         %ContactRoute; "all"
          routetag      %String;       ""
          >

<!ELEMENT portref EMPTY>
<!ATTLIST portref
          moduleinst    %String;       #REQUIRED
          port          %String;       #REQUIRED
          >

<!-- ### Object lists ##################################################### -->

<!ELEMENT variantdefs (variantdef)*>
<!ELEMENT settings (setting)*>
<!ELEMENT modules (module)*>
<!ELEMENT moduleinsts (moduleinst)*>
<!ELEMENT ports (port)*>
<!ELEMENT sheets (sheet)*>
<!ELEMENT layers (layer)*>
<!ELEMENT packages (package)*>
<!ELEMENT symbols (symbol)*>
<!ELEMENT devicesets (deviceset)*>
<!ELEMENT gates (gate)*>
<!ELEMENT devices (device)*>
<!ELEMENT libraries (library)*>
<!ELEMENT connects (connect)*>
<!ELEMENT technologies (technology)*>
<!ELEMENT attributes (attribute)*>
<!ELEMENT classes (class)*>
<!ELEMENT parts (part)*>
<!ELEMENT instances (instance)*>
<!ELEMENT errors (approved)*>
<!ELEMENT plain (polygon | wire | text | dimension | circle | rectangle | frame | hole)*>
<!ELEMENT autorouter (pass)*>
<!ELEMENT elements (element)*>
<!ELEMENT signals (signal)*>
<!ELEMENT busses (bus)*>
<!ELEMENT nets (net)*>

<!-- ### Miscellaneous objects ############################################ -->

<!ELEMENT setting EMPTY>
<!ATTLIST setting
          alwaysvectorfont %Bool;         #IMPLIED
          verticaltext     %VerticalText; "up"
          >

<!ELEMENT designrules (description*, param*)>
<!ATTLIST designrules
          name          %String;       #REQUIRED
          >

<!ELEMENT grid EMPTY>
<!ATTLIST grid
          distance      %Real;         #IMPLIED
          unitdist      %GridUnit;     #IMPLIED
          unit          %GridUnit;     #IMPLIED
          style         %GridStyle;    "lines"
          multiple      %Int;          "1"
          display       %Bool;         "no"
          altdistance   %Real;         #IMPLIED
          altunitdist   %GridUnit;     #IMPLIED
          altunit       %GridUnit;     #IMPLIED
          >

<!ELEMENT layer EMPTY>
<!ATTLIST layer
          number        %Layer;        #REQUIRED
          name          %String;       #REQUIRED
          color         %Int;          #REQUIRED
          fill          %Int;          #REQUIRED
          visible       %Bool;         "yes"
          active        %Bool;         "yes"
          >

<!ELEMENT class (clearance)*>
<!ATTLIST class
          number        %Class;        #REQUIRED
          name          %String;       #REQUIRED
          width         %Dimension;    "0"
          drill         %Dimension;    "0"
          >

<!ELEMENT clearance EMPTY>
<!ATTLIST clearance
          class         %Class;        #REQUIRED
          value         %Dimension;    "0"
          >

<!ELEMENT description (#PCDATA)>
<!ATTLIST description
          language      %String;       "en"
          >

<!ELEMENT param EMPTY>
<!ATTLIST param
          name          %String;       #REQUIRED
          value         %String;       #REQUIRED
          >

<!ELEMENT pass (param)*>
<!ATTLIST pass
          name          %String;       #REQUIRED
          refer         %String;       #IMPLIED
          active        %Bool;         "yes"
          >

<!ELEMENT approved EMPTY>
<!ATTLIST approved
          hash          %String;       #REQUIRED
          >