Add passthrough command and refactor commands in binary format.

The ControlCommand is now more like a VehicleMessage - it has a 'type'
and many optional fields pointing to the various types. If the type is
diagnostic, the client should look at the diagnostic_request field.

7 files changed, 1803 insertions, 267 deletions

diff --git a/README.md b/README.md
index dd5651ed..feb40c44 100644
--- a/README.md
+++ b/README.md
@@ -279,6 +279,33 @@ MAC address of an included Bluetooth module) into into the outgoing data stream.
 
     { "command_response": "device_id", "message": "0012345678"}
 
+#### Passthrough CAN Mode
+
+The `passthrough` command controls the passthrough mode for each of the CAN
+buses. There are three passthrough modes:
+
+* `off` - Only the specified simple vehicle messages are processed and output
+  from the VI.
+* `filtered` - If the CAN acceptance filter is not otherwise disabled, only the
+  pre-defined CAN messages (i.e. those compiled with the firmware) will be
+  output in the low-level CAN format from VI.
+* `unfiltered` - All received CAN messages will be passed through from the bus
+  to the VI's output.
+
+**Request**
+
+    { "command": "passthrough"
+      "bus": 1,
+      "mode":
+    }
+
+**Response**
+
+If the bus and mode in the request were recognized, the `status` field in the
+response will be `true`. If `false`, the passthrough mode was not changed.
+
+    { "command_response": "passthrough", "status": true}
+
 ### Trace File Format
 
 An OpenXC vehicle trace file is a plaintext file that contains JSON objects,
diff --git a/gen/cpp/openxc.pb b/gen/cpp/openxc.pb
index e2d67115..aa302360 100644
--- a/gen/cpp/openxc.pb
+++ b/gen/cpp/openxc.pb
@@ -1,5 +1,5 @@
 
-¡

+ƒ
 openxc.protoopenxc"”
 VehicleMessage)
 type
 
(2.openxc.VehicleMessage.Type'
@@ -21,20 +21,32 @@ RawMessage
 bus
 
(
 
 message_id 
(

-data 
("ô

+data 
("‡
 ControlCommand)
-type
 
(2.openxc.ControlCommand.Type5
-diagnostic_request 
(2.openxc.DiagnosticRequest-
-action 
(2.openxc.ControlCommand.Action"2
+type
 
(2.openxc.ControlCommand.Type<
+diagnostic_request 
(2 .openxc.DiagnosticControlCommandG
+passthrough_mode_request 
(2%.openxc.PassthroughModeControlCommand"C
 Type
 VERSION


 	DEVICE_ID
 
-DIAGNOSTIC"
+DIAGNOSTIC
+PASSTHROUGH"ž

+DiagnosticControlCommand*
+request
 
(2.openxc.DiagnosticRequest7
+action 
(2'.openxc.DiagnosticControlCommand.Action"
 Action
 ADD

 
-CANCEL"]
+CANCEL"«

+PassthroughModeControlCommand
+bus
 
(C
+mode 
(25.openxc.PassthroughModeControlCommand.PassthroughMode"8
+PassthroughMode
+OFF

+FILTERED
+
+UNFILTERED"]
 CommandResponse)
 type
 
(2.openxc.ControlCommand.Type
 message 
(	
diff --git a/gen/cpp/openxc.pb.c b/gen/cpp/openxc.pb.c
index 5895ffc1..8f9fc19c 100644
--- a/gen/cpp/openxc.pb.c
+++ b/gen/cpp/openxc.pb.c
@@ -1,5 +1,5 @@
 /* Automatically generated nanopb constant definitions */
-/* Generated by nanopb-0.2.5 at Mon Aug 11 23:26:24 2014. */
+/* Generated by nanopb-0.2.5 at Sat Sep 20 21:48:43 2014. */
 
 #include "openxc.pb.h"
 
@@ -24,8 +24,20 @@ const pb_field_t openxc_RawMessage_fields[4] = {
 
 const pb_field_t openxc_ControlCommand_fields[4] = {
     PB_FIELD2(  1, ENUM    , OPTIONAL, STATIC  , FIRST, openxc_ControlCommand, type, type, 0),
-    PB_FIELD2(  2, MESSAGE , OPTIONAL, STATIC  , OTHER, openxc_ControlCommand, diagnostic_request, type, &openxc_DiagnosticRequest_fields),
-    PB_FIELD2(  3, ENUM    , OPTIONAL, STATIC  , OTHER, openxc_ControlCommand, action, diagnostic_request, 0),
+    PB_FIELD2(  2, MESSAGE , OPTIONAL, STATIC  , OTHER, openxc_ControlCommand, diagnostic_request, type, &openxc_DiagnosticControlCommand_fields),
+    PB_FIELD2(  3, MESSAGE , OPTIONAL, STATIC  , OTHER, openxc_ControlCommand, passthrough_mode_request, diagnostic_request, &openxc_PassthroughModeControlCommand_fields),
+    PB_LAST_FIELD
+};
+
+const pb_field_t openxc_DiagnosticControlCommand_fields[3] = {
+    PB_FIELD2(  1, MESSAGE , OPTIONAL, STATIC  , FIRST, openxc_DiagnosticControlCommand, request, request, &openxc_DiagnosticRequest_fields),
+    PB_FIELD2(  2, ENUM    , OPTIONAL, STATIC  , OTHER, openxc_DiagnosticControlCommand, action, request, 0),
+    PB_LAST_FIELD
+};
+
+const pb_field_t openxc_PassthroughModeControlCommand_fields[3] = {
+    PB_FIELD2(  1, INT32   , OPTIONAL, STATIC  , FIRST, openxc_PassthroughModeControlCommand, bus, bus, 0),
+    PB_FIELD2(  2, ENUM    , OPTIONAL, STATIC  , OTHER, openxc_PassthroughModeControlCommand, mode, bus, 0),
     PB_LAST_FIELD
 };
 
@@ -80,11 +92,11 @@ const pb_field_t openxc_TranslatedMessage_fields[5] = {
 
 /* Check that field information fits in pb_field_t */
 #if !defined(PB_FIELD_16BIT) && !defined(PB_FIELD_32BIT)
-STATIC_ASSERT((pb_membersize(openxc_VehicleMessage, raw_message) < 256 && pb_membersize(openxc_VehicleMessage, translated_message) < 256 && pb_membersize(openxc_VehicleMessage, diagnostic_response) < 256 && pb_membersize(openxc_VehicleMessage, control_command) < 256 && pb_membersize(openxc_VehicleMessage, command_response) < 256 && pb_membersize(openxc_ControlCommand, diagnostic_request) < 256 && pb_membersize(openxc_TranslatedMessage, value) < 256 && pb_membersize(openxc_TranslatedMessage, event) < 256), YOU_MUST_DEFINE_PB_FIELD_16BIT_FOR_MESSAGES_openxc_VehicleMessage_openxc_RawMessage_openxc_ControlCommand_openxc_CommandResponse_openxc_DiagnosticRequest_openxc_DiagnosticResponse_openxc_DynamicField_openxc_TranslatedMessage)
+STATIC_ASSERT((pb_membersize(openxc_VehicleMessage, raw_message) < 256 && pb_membersize(openxc_VehicleMessage, translated_message) < 256 && pb_membersize(openxc_VehicleMessage, diagnostic_response) < 256 && pb_membersize(openxc_VehicleMessage, control_command) < 256 && pb_membersize(openxc_VehicleMessage, command_response) < 256 && pb_membersize(openxc_ControlCommand, diagnostic_request) < 256 && pb_membersize(openxc_ControlCommand, passthrough_mode_request) < 256 && pb_membersize(openxc_DiagnosticControlCommand, request) < 256 && pb_membersize(openxc_TranslatedMessage, value) < 256 && pb_membersize(openxc_TranslatedMessage, event) < 256), YOU_MUST_DEFINE_PB_FIELD_16BIT_FOR_MESSAGES_openxc_VehicleMessage_openxc_RawMessage_openxc_ControlCommand_openxc_DiagnosticControlCommand_openxc_PassthroughModeControlCommand_openxc_CommandResponse_openxc_DiagnosticRequest_openxc_DiagnosticResponse_openxc_DynamicField_openxc_TranslatedMessage)
 #endif
 
 #if !defined(PB_FIELD_32BIT)
-STATIC_ASSERT((pb_membersize(openxc_VehicleMessage, raw_message) < 65536 && pb_membersize(openxc_VehicleMessage, translated_message) < 65536 && pb_membersize(openxc_VehicleMessage, diagnostic_response) < 65536 && pb_membersize(openxc_VehicleMessage, control_command) < 65536 && pb_membersize(openxc_VehicleMessage, command_response) < 65536 && pb_membersize(openxc_ControlCommand, diagnostic_request) < 65536 && pb_membersize(openxc_TranslatedMessage, value) < 65536 && pb_membersize(openxc_TranslatedMessage, event) < 65536), YOU_MUST_DEFINE_PB_FIELD_32BIT_FOR_MESSAGES_openxc_VehicleMessage_openxc_RawMessage_openxc_ControlCommand_openxc_CommandResponse_openxc_DiagnosticRequest_openxc_DiagnosticResponse_openxc_DynamicField_openxc_TranslatedMessage)
+STATIC_ASSERT((pb_membersize(openxc_VehicleMessage, raw_message) < 65536 && pb_membersize(openxc_VehicleMessage, translated_message) < 65536 && pb_membersize(openxc_VehicleMessage, diagnostic_response) < 65536 && pb_membersize(openxc_VehicleMessage, control_command) < 65536 && pb_membersize(openxc_VehicleMessage, command_response) < 65536 && pb_membersize(openxc_ControlCommand, diagnostic_request) < 65536 && pb_membersize(openxc_ControlCommand, passthrough_mode_request) < 65536 && pb_membersize(openxc_DiagnosticControlCommand, request) < 65536 && pb_membersize(openxc_TranslatedMessage, value) < 65536 && pb_membersize(openxc_TranslatedMessage, event) < 65536), YOU_MUST_DEFINE_PB_FIELD_32BIT_FOR_MESSAGES_openxc_VehicleMessage_openxc_RawMessage_openxc_ControlCommand_openxc_DiagnosticControlCommand_openxc_PassthroughModeControlCommand_openxc_CommandResponse_openxc_DiagnosticRequest_openxc_DiagnosticResponse_openxc_DynamicField_openxc_TranslatedMessage)
 #endif
 
 /* On some platforms (such as AVR), double is really float.
diff --git a/gen/cpp/openxc.pb.h b/gen/cpp/openxc.pb.h
index b8b60574..48002b14 100644
--- a/gen/cpp/openxc.pb.h
+++ b/gen/cpp/openxc.pb.h
@@ -1,5 +1,5 @@
 /* Automatically generated nanopb header */
-/* Generated by nanopb-0.2.5 at Mon Aug 11 23:26:24 2014. */
+/* Generated by nanopb-0.2.5 at Sat Sep 20 21:48:43 2014. */
 
 #ifndef _PB_OPENXC_PB_H_
 #define _PB_OPENXC_PB_H_
@@ -21,13 +21,20 @@ typedef enum _openxc_VehicleMessage_Type {
 typedef enum _openxc_ControlCommand_Type {
     openxc_ControlCommand_Type_VERSION = 1,
     openxc_ControlCommand_Type_DEVICE_ID = 2,
-    openxc_ControlCommand_Type_DIAGNOSTIC = 3
+    openxc_ControlCommand_Type_DIAGNOSTIC = 3,
+    openxc_ControlCommand_Type_PASSTHROUGH = 4
 } openxc_ControlCommand_Type;
 
-typedef enum _openxc_ControlCommand_Action {
-    openxc_ControlCommand_Action_ADD = 1,
-    openxc_ControlCommand_Action_CANCEL = 2
-} openxc_ControlCommand_Action;
+typedef enum _openxc_DiagnosticControlCommand_Action {
+    openxc_DiagnosticControlCommand_Action_ADD = 1,
+    openxc_DiagnosticControlCommand_Action_CANCEL = 2
+} openxc_DiagnosticControlCommand_Action;
+
+typedef enum _openxc_PassthroughModeControlCommand_PassthroughMode {
+    openxc_PassthroughModeControlCommand_PassthroughMode_OFF = 1,
+    openxc_PassthroughModeControlCommand_PassthroughMode_FILTERED = 2,
+    openxc_PassthroughModeControlCommand_PassthroughMode_UNFILTERED = 3
+} openxc_PassthroughModeControlCommand_PassthroughMode;
 
 typedef enum _openxc_DiagnosticRequest_DecodedType {
     openxc_DiagnosticRequest_DecodedType_NONE = 1,
@@ -120,6 +127,13 @@ typedef struct _openxc_DynamicField {
     bool boolean_value;
 } openxc_DynamicField;
 
+typedef struct _openxc_PassthroughModeControlCommand {
+    bool has_bus;
+    int32_t bus;
+    bool has_mode;
+    openxc_PassthroughModeControlCommand_PassthroughMode mode;
+} openxc_PassthroughModeControlCommand;
+
 typedef struct {
     size_t size;
     uint8_t bytes[8];
@@ -134,14 +148,12 @@ typedef struct _openxc_RawMessage {
     openxc_RawMessage_data_t data;
 } openxc_RawMessage;
 
-typedef struct _openxc_ControlCommand {
-    bool has_type;
-    openxc_ControlCommand_Type type;
-    bool has_diagnostic_request;
-    openxc_DiagnosticRequest diagnostic_request;
+typedef struct _openxc_DiagnosticControlCommand {
+    bool has_request;
+    openxc_DiagnosticRequest request;
     bool has_action;
-    openxc_ControlCommand_Action action;
-} openxc_ControlCommand;
+    openxc_DiagnosticControlCommand_Action action;
+} openxc_DiagnosticControlCommand;
 
 typedef struct _openxc_TranslatedMessage {
     bool has_type;
@@ -154,6 +166,15 @@ typedef struct _openxc_TranslatedMessage {
     openxc_DynamicField event;
 } openxc_TranslatedMessage;
 
+typedef struct _openxc_ControlCommand {
+    bool has_type;
+    openxc_ControlCommand_Type type;
+    bool has_diagnostic_request;
+    openxc_DiagnosticControlCommand diagnostic_request;
+    bool has_passthrough_mode_request;
+    openxc_PassthroughModeControlCommand passthrough_mode_request;
+} openxc_ControlCommand;
+
 typedef struct _openxc_VehicleMessage {
     bool has_type;
     openxc_VehicleMessage_Type type;
@@ -196,16 +217,20 @@ typedef struct _openxc_VehicleMessage {
 #define openxc_DynamicField_string_value_tag     2
 #define openxc_DynamicField_numeric_value_tag    3
 #define openxc_DynamicField_boolean_value_tag    4
+#define openxc_PassthroughModeControlCommand_bus_tag 1
+#define openxc_PassthroughModeControlCommand_mode_tag 2
 #define openxc_RawMessage_bus_tag                1
 #define openxc_RawMessage_message_id_tag         2
 #define openxc_RawMessage_data_tag               3
-#define openxc_ControlCommand_type_tag           1
-#define openxc_ControlCommand_diagnostic_request_tag 2
-#define openxc_ControlCommand_action_tag         3
+#define openxc_DiagnosticControlCommand_request_tag 1
+#define openxc_DiagnosticControlCommand_action_tag 2
 #define openxc_TranslatedMessage_type_tag        1
 #define openxc_TranslatedMessage_name_tag        2
 #define openxc_TranslatedMessage_value_tag       3
 #define openxc_TranslatedMessage_event_tag       4
+#define openxc_ControlCommand_type_tag           1
+#define openxc_ControlCommand_diagnostic_request_tag 2
+#define openxc_ControlCommand_passthrough_mode_request_tag 3
 #define openxc_VehicleMessage_type_tag           1
 #define openxc_VehicleMessage_raw_message_tag    2
 #define openxc_VehicleMessage_translated_message_tag 3
@@ -217,6 +242,8 @@ typedef struct _openxc_VehicleMessage {
 extern const pb_field_t openxc_VehicleMessage_fields[7];
 extern const pb_field_t openxc_RawMessage_fields[4];
 extern const pb_field_t openxc_ControlCommand_fields[4];
+extern const pb_field_t openxc_DiagnosticControlCommand_fields[3];
+extern const pb_field_t openxc_PassthroughModeControlCommand_fields[3];
 extern const pb_field_t openxc_CommandResponse_fields[4];
 extern const pb_field_t openxc_DiagnosticRequest_fields[10];
 extern const pb_field_t openxc_DiagnosticResponse_fields[9];
@@ -224,9 +251,11 @@ extern const pb_field_t openxc_DynamicField_fields[5];
 extern const pb_field_t openxc_TranslatedMessage_fields[5];
 
 /* Maximum encoded size of messages (where known) */
-#define openxc_VehicleMessage_size               672
+#define openxc_VehicleMessage_size               693
 #define openxc_RawMessage_size                   27
-#define openxc_ControlCommand_size               82
+#define openxc_ControlCommand_size               103
+#define openxc_DiagnosticControlCommand_size     76
+#define openxc_PassthroughModeControlCommand_size 17
 #define openxc_CommandResponse_size              139
 #define openxc_DiagnosticRequest_size            68
 #define openxc_DiagnosticResponse_size           56
diff --git a/gen/java/com/openxc/BinaryMessages.java b/gen/java/com/openxc/BinaryMessages.java
index e331fcce..31e3249f 100644
--- a/gen/java/com/openxc/BinaryMessages.java
+++ b/gen/java/com/openxc/BinaryMessages.java
@@ -2056,29 +2056,33 @@ public final class BinaryMessages {
      */
     com.openxc.BinaryMessages.ControlCommand.Type getType();
 
-    // optional .openxc.DiagnosticRequest diagnostic_request = 2;
+    // optional .openxc.DiagnosticControlCommand diagnostic_request = 2;
     /**
-     * <code>optional .openxc.DiagnosticRequest diagnostic_request = 2;</code>
+     * <code>optional .openxc.DiagnosticControlCommand diagnostic_request = 2;</code>
      */
     boolean hasDiagnosticRequest();
     /**
-     * <code>optional .openxc.DiagnosticRequest diagnostic_request = 2;</code>
+     * <code>optional .openxc.DiagnosticControlCommand diagnostic_request = 2;</code>
      */
-    com.openxc.BinaryMessages.DiagnosticRequest getDiagnosticRequest();
+    com.openxc.BinaryMessages.DiagnosticControlCommand getDiagnosticRequest();
     /**
-     * <code>optional .openxc.DiagnosticRequest diagnostic_request = 2;</code>
+     * <code>optional .openxc.DiagnosticControlCommand diagnostic_request = 2;</code>
      */
-    com.openxc.BinaryMessages.DiagnosticRequestOrBuilder getDiagnosticRequestOrBuilder();
+    com.openxc.BinaryMessages.DiagnosticControlCommandOrBuilder getDiagnosticRequestOrBuilder();
 
-    // optional .openxc.ControlCommand.Action action = 3;
+    // optional .openxc.PassthroughModeControlCommand passthrough_mode_request = 3;
     /**
-     * <code>optional .openxc.ControlCommand.Action action = 3;</code>
+     * <code>optional .openxc.PassthroughModeControlCommand passthrough_mode_request = 3;</code>
      */
-    boolean hasAction();
+    boolean hasPassthroughModeRequest();
+    /**
+     * <code>optional .openxc.PassthroughModeControlCommand passthrough_mode_request = 3;</code>
+     */
+    com.openxc.BinaryMessages.PassthroughModeControlCommand getPassthroughModeRequest();
     /**
-     * <code>optional .openxc.ControlCommand.Action action = 3;</code>
+     * <code>optional .openxc.PassthroughModeControlCommand passthrough_mode_request = 3;</code>
      */
-    com.openxc.BinaryMessages.ControlCommand.Action getAction();
+    com.openxc.BinaryMessages.PassthroughModeControlCommandOrBuilder getPassthroughModeRequestOrBuilder();
   }
   /**
    * Protobuf type {@code openxc.ControlCommand}
@@ -2143,11 +2147,11 @@ public final class BinaryMessages {
               break;
             }
             case 18: {
-              com.openxc.BinaryMessages.DiagnosticRequest.Builder subBuilder = null;
+              com.openxc.BinaryMessages.DiagnosticControlCommand.Builder subBuilder = null;
               if (((bitField0_ & 0x00000002) == 0x00000002)) {
                 subBuilder = diagnosticRequest_.toBuilder();
               }
-              diagnosticRequest_ = input.readMessage(com.openxc.BinaryMessages.DiagnosticRequest.PARSER, extensionRegistry);
+              diagnosticRequest_ = input.readMessage(com.openxc.BinaryMessages.DiagnosticControlCommand.PARSER, extensionRegistry);
               if (subBuilder != null) {
                 subBuilder.mergeFrom(diagnosticRequest_);
                 diagnosticRequest_ = subBuilder.buildPartial();
@@ -2155,15 +2159,17 @@ public final class BinaryMessages {
               bitField0_ |= 0x00000002;
               break;
             }
-            case 24: {
-              int rawValue = input.readEnum();
-              com.openxc.BinaryMessages.ControlCommand.Action value = com.openxc.BinaryMessages.ControlCommand.Action.valueOf(rawValue);
-              if (value == null) {
-                unknownFields.mergeVarintField(3, rawValue);
-              } else {
-                bitField0_ |= 0x00000004;
-                action_ = value;
+            case 26: {
+              com.openxc.BinaryMessages.PassthroughModeControlCommand.Builder subBuilder = null;
+              if (((bitField0_ & 0x00000004) == 0x00000004)) {
+                subBuilder = passthroughModeRequest_.toBuilder();
+              }
+              passthroughModeRequest_ = input.readMessage(com.openxc.BinaryMessages.PassthroughModeControlCommand.PARSER, extensionRegistry);
+              if (subBuilder != null) {
+                subBuilder.mergeFrom(passthroughModeRequest_);
+                passthroughModeRequest_ = subBuilder.buildPartial();
               }
+              bitField0_ |= 0x00000004;
               break;
             }
           }
@@ -2222,6 +2228,10 @@ public final class BinaryMessages {
        * <code>DIAGNOSTIC = 3;</code>
        */
       DIAGNOSTIC(2, 3),
+      /**
+       * <code>PASSTHROUGH = 4;</code>
+       */
+      PASSTHROUGH(3, 4),
       ;
 
       /**
@@ -2236,6 +2246,10 @@ public final class BinaryMessages {
        * <code>DIAGNOSTIC = 3;</code>
        */
       public static final int DIAGNOSTIC_VALUE = 3;
+      /**
+       * <code>PASSTHROUGH = 4;</code>
+       */
+      public static final int PASSTHROUGH_VALUE = 4;
 
 
       public final int getNumber() { return value; }
@@ -2245,6 +2259,7 @@ public final class BinaryMessages {
           case 1: return VERSION;
           case 2: return DEVICE_ID;
           case 3: return DIAGNOSTIC;
+          case 4: return PASSTHROUGH;
           default: return null;
         }
       }
@@ -2296,88 +2311,6 @@ public final class BinaryMessages {
       // @@protoc_insertion_point(enum_scope:openxc.ControlCommand.Type)
     }
 
-    /**
-     * Protobuf enum {@code openxc.ControlCommand.Action}
-     */
-    public enum Action
-        implements com.google.protobuf.ProtocolMessageEnum {
-      /**
-       * <code>ADD = 1;</code>
-       */
-      ADD(0, 1),
-      /**
-       * <code>CANCEL = 2;</code>
-       */
-      CANCEL(1, 2),
-      ;
-
-      /**
-       * <code>ADD = 1;</code>
-       */
-      public static final int ADD_VALUE = 1;
-      /**
-       * <code>CANCEL = 2;</code>
-       */
-      public static final int CANCEL_VALUE = 2;
-
-
-      public final int getNumber() { return value; }
-
-      public static Action valueOf(int value) {
-        switch (value) {
-          case 1: return ADD;
-          case 2: return CANCEL;
-          default: return null;
-        }
-      }
-
-      public static com.google.protobuf.Internal.EnumLiteMap<Action>
-          internalGetValueMap() {
-        return internalValueMap;
-      }
-      private static com.google.protobuf.Internal.EnumLiteMap<Action>
-          internalValueMap =
-            new com.google.protobuf.Internal.EnumLiteMap<Action>() {
-              public Action findValueByNumber(int number) {
-                return Action.valueOf(number);
-              }
-            };
-
-      public final com.google.protobuf.Descriptors.EnumValueDescriptor
-          getValueDescriptor() {
-        return getDescriptor().getValues().get(index);
-      }
-      public final com.google.protobuf.Descriptors.EnumDescriptor
-          getDescriptorForType() {
-        return getDescriptor();
-      }
-      public static final com.google.protobuf.Descriptors.EnumDescriptor
-          getDescriptor() {
-        return com.openxc.BinaryMessages.ControlCommand.getDescriptor().getEnumTypes().get(1);
-      }
-
-      private static final Action[] VALUES = values();
-
-      public static Action valueOf(
-          com.google.protobuf.Descriptors.EnumValueDescriptor desc) {
-        if (desc.getType() != getDescriptor()) {
-          throw new java.lang.IllegalArgumentException(
-            "EnumValueDescriptor is not for this type.");
-        }
-        return VALUES[desc.getIndex()];
-      }
-
-      private final int index;
-      private final int value;
-
-      private Action(int index, int value) {
-        this.index = index;
-        this.value = value;
-      }
-
-      // @@protoc_insertion_point(enum_scope:openxc.ControlCommand.Action)
-    }
-
     private int bitField0_;
     // optional .openxc.ControlCommand.Type type = 1;
     public static final int TYPE_FIELD_NUMBER = 1;
@@ -2395,48 +2328,54 @@ public final class BinaryMessages {
       return type_;
     }
 
-    // optional .openxc.DiagnosticRequest diagnostic_request = 2;
+    // optional .openxc.DiagnosticControlCommand diagnostic_request = 2;
     public static final int DIAGNOSTIC_REQUEST_FIELD_NUMBER = 2;
-    private com.openxc.BinaryMessages.DiagnosticRequest diagnosticRequest_;
+    private com.openxc.BinaryMessages.DiagnosticControlCommand diagnosticRequest_;
     /**
-     * <code>optional .openxc.DiagnosticRequest diagnostic_request = 2;</code>
+     * <code>optional .openxc.DiagnosticControlCommand diagnostic_request = 2;</code>
      */
     public boolean hasDiagnosticRequest() {
       return ((bitField0_ & 0x00000002) == 0x00000002);
     }
     /**
-     * <code>optional .openxc.DiagnosticRequest diagnostic_request = 2;</code>
+     * <code>optional .openxc.DiagnosticControlCommand diagnostic_request = 2;</code>
      */
-    public com.openxc.BinaryMessages.DiagnosticRequest getDiagnosticRequest() {
+    public com.openxc.BinaryMessages.DiagnosticControlCommand getDiagnosticRequest() {
       return diagnosticRequest_;
     }
     /**
-     * <code>optional .openxc.DiagnosticRequest diagnostic_request = 2;</code>
+     * <code>optional .openxc.DiagnosticControlCommand diagnostic_request = 2;</code>
      */
-    public com.openxc.BinaryMessages.DiagnosticRequestOrBuilder getDiagnosticRequestOrBuilder() {
+    public com.openxc.BinaryMessages.DiagnosticControlCommandOrBuilder getDiagnosticRequestOrBuilder() {
       return diagnosticRequest_;
     }
 
-    // optional .openxc.ControlCommand.Action action = 3;
-    public static final int ACTION_FIELD_NUMBER = 3;
-    private com.openxc.BinaryMessages.ControlCommand.Action action_;
+    // optional .openxc.PassthroughModeControlCommand passthrough_mode_request = 3;
+    public static final int PASSTHROUGH_MODE_REQUEST_FIELD_NUMBER = 3;
+    private com.openxc.BinaryMessages.PassthroughModeControlCommand passthroughModeRequest_;
     /**
-     * <code>optional .openxc.ControlCommand.Action action = 3;</code>
+     * <code>optional .openxc.PassthroughModeControlCommand passthrough_mode_request = 3;</code>
      */
-    public boolean hasAction() {
+    public boolean hasPassthroughModeRequest() {
       return ((bitField0_ & 0x00000004) == 0x00000004);
     }
     /**
-     * <code>optional .openxc.ControlCommand.Action action = 3;</code>
+     * <code>optional .openxc.PassthroughModeControlCommand passthrough_mode_request = 3;</code>
      */
-    public com.openxc.BinaryMessages.ControlCommand.Action getAction() {
-      return action_;
+    public com.openxc.BinaryMessages.PassthroughModeControlCommand getPassthroughModeRequest() {
+      return passthroughModeRequest_;
+    }
+    /**
+     * <code>optional .openxc.PassthroughModeControlCommand passthrough_mode_request = 3;</code>
+     */
+    public com.openxc.BinaryMessages.PassthroughModeControlCommandOrBuilder getPassthroughModeRequestOrBuilder() {
+      return passthroughModeRequest_;
     }
 
     private void initFields() {
       type_ = com.openxc.BinaryMessages.ControlCommand.Type.VERSION;
-      diagnosticRequest_ = com.openxc.BinaryMessages.DiagnosticRequest.getDefaultInstance();
-      action_ = com.openxc.BinaryMessages.ControlCommand.Action.ADD;
+      diagnosticRequest_ = com.openxc.BinaryMessages.DiagnosticControlCommand.getDefaultInstance();
+      passthroughModeRequest_ = com.openxc.BinaryMessages.PassthroughModeControlCommand.getDefaultInstance();
     }
     private byte memoizedIsInitialized = -1;
     public final boolean isInitialized() {
@@ -2457,7 +2396,7 @@ public final class BinaryMessages {
         output.writeMessage(2, diagnosticRequest_);
       }
       if (((bitField0_ & 0x00000004) == 0x00000004)) {
-        output.writeEnum(3, action_.getNumber());
+        output.writeMessage(3, passthroughModeRequest_);
       }
       getUnknownFields().writeTo(output);
     }
@@ -2478,7 +2417,7 @@ public final class BinaryMessages {
       }
       if (((bitField0_ & 0x00000004) == 0x00000004)) {
         size += com.google.protobuf.CodedOutputStream
-          .computeEnumSize(3, action_.getNumber());
+          .computeMessageSize(3, passthroughModeRequest_);
       }
       size += getUnknownFields().getSerializedSize();
       memoizedSerializedSize = size;
@@ -2589,6 +2528,7 @@ public final class BinaryMessages {
       private void maybeForceBuilderInitialization() {
         if (com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders) {
           getDiagnosticRequestFieldBuilder();
+          getPassthroughModeRequestFieldBuilder();
         }
       }
       private static Builder create() {
@@ -2600,12 +2540,16 @@ public final class BinaryMessages {
         type_ = com.openxc.BinaryMessages.ControlCommand.Type.VERSION;
         bitField0_ = (bitField0_ & ~0x00000001);
         if (diagnosticRequestBuilder_ == null) {
-          diagnosticRequest_ = com.openxc.BinaryMessages.DiagnosticRequest.getDefaultInstance();
+          diagnosticRequest_ = com.openxc.BinaryMessages.DiagnosticControlCommand.getDefaultInstance();
         } else {
           diagnosticRequestBuilder_.clear();
         }
         bitField0_ = (bitField0_ & ~0x00000002);
-        action_ = com.openxc.BinaryMessages.ControlCommand.Action.ADD;
+        if (passthroughModeRequestBuilder_ == null) {
+          passthroughModeRequest_ = com.openxc.BinaryMessages.PassthroughModeControlCommand.getDefaultInstance();
+        } else {
+          passthroughModeRequestBuilder_.clear();
+        }
         bitField0_ = (bitField0_ & ~0x00000004);
         return this;
       }
@@ -2650,7 +2594,11 @@ public final class BinaryMessages {
         if (((from_bitField0_ & 0x00000004) == 0x00000004)) {
           to_bitField0_ |= 0x00000004;
         }
-        result.action_ = action_;
+        if (passthroughModeRequestBuilder_ == null) {
+          result.passthroughModeRequest_ = passthroughModeRequest_;
+        } else {
+          result.passthroughModeRequest_ = passthroughModeRequestBuilder_.build();
+        }
         result.bitField0_ = to_bitField0_;
         onBuilt();
         return result;
@@ -2673,8 +2621,8 @@ public final class BinaryMessages {
         if (other.hasDiagnosticRequest()) {
           mergeDiagnosticRequest(other.getDiagnosticRequest());
         }
-        if (other.hasAction()) {
-          setAction(other.getAction());
+        if (other.hasPassthroughModeRequest()) {
+          mergePassthroughModeRequest(other.getPassthroughModeRequest());
         }
         this.mergeUnknownFields(other.getUnknownFields());
         return this;
@@ -2739,20 +2687,20 @@ public final class BinaryMessages {
         return this;
       }
 
-      // optional .openxc.DiagnosticRequest diagnostic_request = 2;
-      private com.openxc.BinaryMessages.DiagnosticRequest diagnosticRequest_ = com.openxc.BinaryMessages.DiagnosticRequest.getDefaultInstance();
+      // optional .openxc.DiagnosticControlCommand diagnostic_request = 2;
+      private com.openxc.BinaryMessages.DiagnosticControlCommand diagnosticRequest_ = com.openxc.BinaryMessages.DiagnosticControlCommand.getDefaultInstance();
       private com.google.protobuf.SingleFieldBuilder<
-          com.openxc.BinaryMessages.DiagnosticRequest, com.openxc.BinaryMessages.DiagnosticRequest.Builder, com.openxc.BinaryMessages.DiagnosticRequestOrBuilder> diagnosticRequestBuilder_;
+          com.openxc.BinaryMessages.DiagnosticControlCommand, com.openxc.BinaryMessages.DiagnosticControlCommand.Builder, com.openxc.BinaryMessages.DiagnosticControlCommandOrBuilder> diagnosticRequestBuilder_;
       /**
-       * <code>optional .openxc.DiagnosticRequest diagnostic_request = 2;</code>
+       * <code>optional .openxc.DiagnosticControlCommand diagnostic_request = 2;</code>
        */
       public boolean hasDiagnosticRequest() {
         return ((bitField0_ & 0x00000002) == 0x00000002);
       }
       /**
-       * <code>optional .openxc.DiagnosticRequest diagnostic_request = 2;</code>
+       * <code>optional .openxc.DiagnosticControlCommand diagnostic_request = 2;</code>
        */
-      public com.openxc.BinaryMessages.DiagnosticRequest getDiagnosticRequest() {
+      public com.openxc.BinaryMessages.DiagnosticControlCommand getDiagnosticRequest() {
         if (diagnosticRequestBuilder_ == null) {
           return diagnosticRequest_;
         } else {
@@ -2760,9 +2708,9 @@ public final class BinaryMessages {
         }
       }
       /**
-       * <code>optional .openxc.DiagnosticRequest diagnostic_request = 2;</code>
+       * <code>optional .openxc.DiagnosticControlCommand diagnostic_request = 2;</code>
        */
-      public Builder setDiagnosticRequest(com.openxc.BinaryMessages.DiagnosticRequest value) {
+      public Builder setDiagnosticRequest(com.openxc.BinaryMessages.DiagnosticControlCommand value) {
         if (diagnosticRequestBuilder_ == null) {
           if (value == null) {
             throw new NullPointerException();
@@ -2776,10 +2724,10 @@ public final class BinaryMessages {
         return this;
       }
       /**
-       * <code>optional .openxc.DiagnosticRequest diagnostic_request = 2;</code>
+       * <code>optional .openxc.DiagnosticControlCommand diagnostic_request = 2;</code>
        */
       public Builder setDiagnosticRequest(
-          com.openxc.BinaryMessages.DiagnosticRequest.Builder builderForValue) {
+          com.openxc.BinaryMessages.DiagnosticControlCommand.Builder builderForValue) {
         if (diagnosticRequestBuilder_ == null) {
           diagnosticRequest_ = builderForValue.build();
           onChanged();
@@ -2790,14 +2738,14 @@ public final class BinaryMessages {
         return this;
       }
       /**
-       * <code>optional .openxc.DiagnosticRequest diagnostic_request = 2;</code>
+       * <code>optional .openxc.DiagnosticControlCommand diagnostic_request = 2;</code>
        */
-      public Builder mergeDiagnosticRequest(com.openxc.BinaryMessages.DiagnosticRequest value) {
+      public Builder mergeDiagnosticRequest(com.openxc.BinaryMessages.DiagnosticControlCommand value) {
         if (diagnosticRequestBuilder_ == null) {
           if (((bitField0_ & 0x00000002) == 0x00000002) &&
-              diagnosticRequest_ != com.openxc.BinaryMessages.DiagnosticRequest.getDefaultInstance()) {
+              diagnosticRequest_ != com.openxc.BinaryMessages.DiagnosticControlCommand.getDefaultInstance()) {
             diagnosticRequest_ =
-              com.openxc.BinaryMessages.DiagnosticRequest.newBuilder(diagnosticRequest_).mergeFrom(value).buildPartial();
+              com.openxc.BinaryMessages.DiagnosticControlCommand.newBuilder(diagnosticRequest_).mergeFrom(value).buildPartial();
           } else {
             diagnosticRequest_ = value;
           }
@@ -2809,11 +2757,11 @@ public final class BinaryMessages {
         return this;
       }
       /**
-       * <code>optional .openxc.DiagnosticRequest diagnostic_request = 2;</code>
+       * <code>optional .openxc.DiagnosticControlCommand diagnostic_request = 2;</code>
        */
       public Builder clearDiagnosticRequest() {
         if (diagnosticRequestBuilder_ == null) {
-          diagnosticRequest_ = com.openxc.BinaryMessages.DiagnosticRequest.getDefaultInstance();
+          diagnosticRequest_ = com.openxc.BinaryMessages.DiagnosticControlCommand.getDefaultInstance();
           onChanged();
         } else {
           diagnosticRequestBuilder_.clear();
@@ -2822,17 +2770,17 @@ public final class BinaryMessages {
         return this;
       }
       /**
-       * <code>optional .openxc.DiagnosticRequest diagnostic_request = 2;</code>
+       * <code>optional .openxc.DiagnosticControlCommand diagnostic_request = 2;</code>
        */
-      public com.openxc.BinaryMessages.DiagnosticRequest.Builder getDiagnosticRequestBuilder() {
+      public com.openxc.BinaryMessages.DiagnosticControlCommand.Builder getDiagnosticRequestBuilder() {
         bitField0_ |= 0x00000002;
         onChanged();
         return getDiagnosticRequestFieldBuilder().getBuilder();
       }
       /**
-       * <code>optional .openxc.DiagnosticRequest diagnostic_request = 2;</code>
+       * <code>optional .openxc.DiagnosticControlCommand diagnostic_request = 2;</code>
        */
-      public com.openxc.BinaryMessages.DiagnosticRequestOrBuilder getDiagnosticRequestOrBuilder() {
+      public com.openxc.BinaryMessages.DiagnosticControlCommandOrBuilder getDiagnosticRequestOrBuilder() {
         if (diagnosticRequestBuilder_ != null) {
           return diagnosticRequestBuilder_.getMessageOrBuilder();
         } else {
@@ -2840,14 +2788,14 @@ public final class BinaryMessages {
         }
       }
       /**
-       * <code>optional .openxc.DiagnosticRequest diagnostic_request = 2;</code>
+       * <code>optional .openxc.DiagnosticControlCommand diagnostic_request = 2;</code>
        */
       private com.google.protobuf.SingleFieldBuilder<
-          com.openxc.BinaryMessages.DiagnosticRequest, com.openxc.BinaryMessages.DiagnosticRequest.Builder, com.openxc.BinaryMessages.DiagnosticRequestOrBuilder> 
+          com.openxc.BinaryMessages.DiagnosticControlCommand, com.openxc.BinaryMessages.DiagnosticControlCommand.Builder, com.openxc.BinaryMessages.DiagnosticControlCommandOrBuilder> 
           getDiagnosticRequestFieldBuilder() {
         if (diagnosticRequestBuilder_ == null) {
           diagnosticRequestBuilder_ = new com.google.protobuf.SingleFieldBuilder<
-              com.openxc.BinaryMessages.DiagnosticRequest, com.openxc.BinaryMessages.DiagnosticRequest.Builder, com.openxc.BinaryMessages.DiagnosticRequestOrBuilder>(
+              com.openxc.BinaryMessages.DiagnosticControlCommand, com.openxc.BinaryMessages.DiagnosticControlCommand.Builder, com.openxc.BinaryMessages.DiagnosticControlCommandOrBuilder>(
                   diagnosticRequest_,
                   getParentForChildren(),
                   isClean());
@@ -2856,51 +2804,1388 @@ public final class BinaryMessages {
         return diagnosticRequestBuilder_;
       }
 
-      // optional .openxc.ControlCommand.Action action = 3;
-      private com.openxc.BinaryMessages.ControlCommand.Action action_ = com.openxc.BinaryMessages.ControlCommand.Action.ADD;
+      // optional .openxc.PassthroughModeControlCommand passthrough_mode_request = 3;
+      private com.openxc.BinaryMessages.PassthroughModeControlCommand passthroughModeRequest_ = com.openxc.BinaryMessages.PassthroughModeControlCommand.getDefaultInstance();
+      private com.google.protobuf.SingleFieldBuilder<
+          com.openxc.BinaryMessages.PassthroughModeControlCommand, com.openxc.BinaryMessages.PassthroughModeControlCommand.Builder, com.openxc.BinaryMessages.PassthroughModeControlCommandOrBuilder> passthroughModeRequestBuilder_;
       /**
-       * <code>optional .openxc.ControlCommand.Action action = 3;</code>
+       * <code>optional .openxc.PassthroughModeControlCommand passthrough_mode_request = 3;</code>
        */
-      public boolean hasAction() {
+      public boolean hasPassthroughModeRequest() {
         return ((bitField0_ & 0x00000004) == 0x00000004);
       }
       /**
-       * <code>optional .openxc.ControlCommand.Action action = 3;</code>
+       * <code>optional .openxc.PassthroughModeControlCommand passthrough_mode_request = 3;</code>
+       */
+      public com.openxc.BinaryMessages.PassthroughModeControlCommand getPassthroughModeRequest() {
+        if (passthroughModeRequestBuilder_ == null) {
+          return passthroughModeRequest_;
+        } else {
+          return passthroughModeRequestBuilder_.getMessage();
+        }
+      }
+      /**
+       * <code>optional .openxc.PassthroughModeControlCommand passthrough_mode_request = 3;</code>
+       */
+      public Builder setPassthroughModeRequest(com.openxc.BinaryMessages.PassthroughModeControlCommand value) {
+        if (passthroughModeRequestBuilder_ == null) {
+          if (value == null) {
+            throw new NullPointerException();
+          }
+          passthroughModeRequest_ = value;
+          onChanged();
+        } else {
+          passthroughModeRequestBuilder_.setMessage(value);
+        }
+        bitField0_ |= 0x00000004;
+        return this;
+      }
+      /**
+       * <code>optional .openxc.PassthroughModeControlCommand passthrough_mode_request = 3;</code>
+       */
+      public Builder setPassthroughModeRequest(
+          com.openxc.BinaryMessages.PassthroughModeControlCommand.Builder builderForValue) {
+        if (passthroughModeRequestBuilder_ == null) {
+          passthroughModeRequest_ = builderForValue.build();
+          onChanged();
+        } else {
+          passthroughModeRequestBuilder_.setMessage(builderForValue.build());
+        }
+        bitField0_ |= 0x00000004;
+        return this;
+      }
+      /**
+       * <code>optional .openxc.PassthroughModeControlCommand passthrough_mode_request = 3;</code>
+       */
+      public Builder mergePassthroughModeRequest(com.openxc.BinaryMessages.PassthroughModeControlCommand value) {
+        if (passthroughModeRequestBuilder_ == null) {
+          if (((bitField0_ & 0x00000004) == 0x00000004) &&
+              passthroughModeRequest_ != com.openxc.BinaryMessages.PassthroughModeControlCommand.getDefaultInstance()) {
+            passthroughModeRequest_ =
+              com.openxc.BinaryMessages.PassthroughModeControlCommand.newBuilder(passthroughModeRequest_).mergeFrom(value).buildPartial();
+          } else {
+            passthroughModeRequest_ = value;
+          }
+          onChanged();
+        } else {
+          passthroughModeRequestBuilder_.mergeFrom(value);
+        }
+        bitField0_ |= 0x00000004;
+        return this;
+      }
+      /**
+       * <code>optional .openxc.PassthroughModeControlCommand passthrough_mode_request = 3;</code>
+       */
+      public Builder clearPassthroughModeRequest() {
+        if (passthroughModeRequestBuilder_ == null) {
+          passthroughModeRequest_ = com.openxc.BinaryMessages.PassthroughModeControlCommand.getDefaultInstance();
+          onChanged();
+        } else {
+          passthroughModeRequestBuilder_.clear();
+        }
+        bitField0_ = (bitField0_ & ~0x00000004);
+        return this;
+      }
+      /**
+       * <code>optional .openxc.PassthroughModeControlCommand passthrough_mode_request = 3;</code>
+       */
+      public com.openxc.BinaryMessages.PassthroughModeControlCommand.Builder getPassthroughModeRequestBuilder() {
+        bitField0_ |= 0x00000004;
+        onChanged();
+        return getPassthroughModeRequestFieldBuilder().getBuilder();
+      }
+      /**
+       * <code>optional .openxc.PassthroughModeControlCommand passthrough_mode_request = 3;</code>
+       */
+      public com.openxc.BinaryMessages.PassthroughModeControlCommandOrBuilder getPassthroughModeRequestOrBuilder() {
+        if (passthroughModeRequestBuilder_ != null) {
+          return passthroughModeRequestBuilder_.getMessageOrBuilder();
+        } else {
+          return passthroughModeRequest_;
+        }
+      }
+      /**
+       * <code>optional .openxc.PassthroughModeControlCommand passthrough_mode_request = 3;</code>
+       */
+      private com.google.protobuf.SingleFieldBuilder<
+          com.openxc.BinaryMessages.PassthroughModeControlCommand, com.openxc.BinaryMessages.PassthroughModeControlCommand.Builder, com.openxc.BinaryMessages.PassthroughModeControlCommandOrBuilder> 
+          getPassthroughModeRequestFieldBuilder() {
+        if (passthroughModeRequestBuilder_ == null) {
+          passthroughModeRequestBuilder_ = new com.google.protobuf.SingleFieldBuilder<
+              com.openxc.BinaryMessages.PassthroughModeControlCommand, com.openxc.BinaryMessages.PassthroughModeControlCommand.Builder, com.openxc.BinaryMessages.PassthroughModeControlCommandOrBuilder>(
+                  passthroughModeRequest_,
+                  getParentForChildren(),
+                  isClean());
+          passthroughModeRequest_ = null;
+        }
+        return passthroughModeRequestBuilder_;
+      }
+
+      // @@protoc_insertion_point(builder_scope:openxc.ControlCommand)
+    }
+
+    static {
+      defaultInstance = new ControlCommand(true);
+      defaultInstance.initFields();
+    }
+
+    // @@protoc_insertion_point(class_scope:openxc.ControlCommand)
+  }
+
+  public interface DiagnosticControlCommandOrBuilder
+      extends com.google.protobuf.MessageOrBuilder {
+
+    // optional .openxc.DiagnosticRequest request = 1;
+    /**
+     * <code>optional .openxc.DiagnosticRequest request = 1;</code>
+     */
+    boolean hasRequest();
+    /**
+     * <code>optional .openxc.DiagnosticRequest request = 1;</code>
+     */
+    com.openxc.BinaryMessages.DiagnosticRequest getRequest();
+    /**
+     * <code>optional .openxc.DiagnosticRequest request = 1;</code>
+     */
+    com.openxc.BinaryMessages.DiagnosticRequestOrBuilder getRequestOrBuilder();
+
+    // optional .openxc.DiagnosticControlCommand.Action action = 2;
+    /**
+     * <code>optional .openxc.DiagnosticControlCommand.Action action = 2;</code>
+     */
+    boolean hasAction();
+    /**
+     * <code>optional .openxc.DiagnosticControlCommand.Action action = 2;</code>
+     */
+    com.openxc.BinaryMessages.DiagnosticControlCommand.Action getAction();
+  }
+  /**
+   * Protobuf type {@code openxc.DiagnosticControlCommand}
+   */
+  public static final class DiagnosticControlCommand extends
+      com.google.protobuf.GeneratedMessage
+      implements DiagnosticControlCommandOrBuilder {
+    // Use DiagnosticControlCommand.newBuilder() to construct.
+    private DiagnosticControlCommand(com.google.protobuf.GeneratedMessage.Builder<?> builder) {
+      super(builder);
+      this.unknownFields = builder.getUnknownFields();
+    }
+    private DiagnosticControlCommand(boolean noInit) { this.unknownFields = com.google.protobuf.UnknownFieldSet.getDefaultInstance(); }
+
+    private static final DiagnosticControlCommand defaultInstance;
+    public static DiagnosticControlCommand getDefaultInstance() {
+      return defaultInstance;
+    }
+
+    public DiagnosticControlCommand getDefaultInstanceForType() {
+      return defaultInstance;
+    }
+
+    private final com.google.protobuf.UnknownFieldSet unknownFields;
+    @java.lang.Override
+    public final com.google.protobuf.UnknownFieldSet
+        getUnknownFields() {
+      return this.unknownFields;
+    }
+    private DiagnosticControlCommand(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      initFields();
+      int mutable_bitField0_ = 0;
+      com.google.protobuf.UnknownFieldSet.Builder unknownFields =
+          com.google.protobuf.UnknownFieldSet.newBuilder();
+      try {
+        boolean done = false;
+        while (!done) {
+          int tag = input.readTag();
+          switch (tag) {
+            case 0:
+              done = true;
+              break;
+            default: {
+              if (!parseUnknownField(input, unknownFields,
+                                     extensionRegistry, tag)) {
+                done = true;
+              }
+              break;
+            }
+            case 10: {
+              com.openxc.BinaryMessages.DiagnosticRequest.Builder subBuilder = null;
+              if (((bitField0_ & 0x00000001) == 0x00000001)) {
+                subBuilder = request_.toBuilder();
+              }
+              request_ = input.readMessage(com.openxc.BinaryMessages.DiagnosticRequest.PARSER, extensionRegistry);
+              if (subBuilder != null) {
+                subBuilder.mergeFrom(request_);
+                request_ = subBuilder.buildPartial();
+              }
+              bitField0_ |= 0x00000001;
+              break;
+            }
+            case 16: {
+              int rawValue = input.readEnum();
+              com.openxc.BinaryMessages.DiagnosticControlCommand.Action value = com.openxc.BinaryMessages.DiagnosticControlCommand.Action.valueOf(rawValue);
+              if (value == null) {
+                unknownFields.mergeVarintField(2, rawValue);
+              } else {
+                bitField0_ |= 0x00000002;
+                action_ = value;
+              }
+              break;
+            }
+          }
+        }
+      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+        throw e.setUnfinishedMessage(this);
+      } catch (java.io.IOException e) {
+        throw new com.google.protobuf.InvalidProtocolBufferException(
+            e.getMessage()).setUnfinishedMessage(this);
+      } finally {
+        this.unknownFields = unknownFields.build();
+        makeExtensionsImmutable();
+      }
+    }
+    public static final com.google.protobuf.Descriptors.Descriptor
+        getDescriptor() {
+      return com.openxc.BinaryMessages.internal_static_openxc_DiagnosticControlCommand_descriptor;
+    }
+
+    protected com.google.protobuf.GeneratedMessage.FieldAccessorTable
+        internalGetFieldAccessorTable() {
+      return com.openxc.BinaryMessages.internal_static_openxc_DiagnosticControlCommand_fieldAccessorTable
+          .ensureFieldAccessorsInitialized(
+              com.openxc.BinaryMessages.DiagnosticControlCommand.class, com.openxc.BinaryMessages.DiagnosticControlCommand.Builder.class);
+    }
+
+    public static com.google.protobuf.Parser<DiagnosticControlCommand> PARSER =
+        new com.google.protobuf.AbstractParser<DiagnosticControlCommand>() {
+      public DiagnosticControlCommand parsePartialFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws com.google.protobuf.InvalidProtocolBufferException {
+        return new DiagnosticControlCommand(input, extensionRegistry);
+      }
+    };
+
+    @java.lang.Override
+    public com.google.protobuf.Parser<DiagnosticControlCommand> getParserForType() {
+      return PARSER;
+    }
+
+    /**
+     * Protobuf enum {@code openxc.DiagnosticControlCommand.Action}
+     */
+    public enum Action
+        implements com.google.protobuf.ProtocolMessageEnum {
+      /**
+       * <code>ADD = 1;</code>
+       */
+      ADD(0, 1),
+      /**
+       * <code>CANCEL = 2;</code>
+       */
+      CANCEL(1, 2),
+      ;
+
+      /**
+       * <code>ADD = 1;</code>
+       */
+      public static final int ADD_VALUE = 1;
+      /**
+       * <code>CANCEL = 2;</code>
+       */
+      public static final int CANCEL_VALUE = 2;
+
+
+      public final int getNumber() { return value; }
+
+      public static Action valueOf(int value) {
+        switch (value) {
+          case 1: return ADD;
+          case 2: return CANCEL;
+          default: return null;
+        }
+      }
+
+      public static com.google.protobuf.Internal.EnumLiteMap<Action>
+          internalGetValueMap() {
+        return internalValueMap;
+      }
+      private static com.google.protobuf.Internal.EnumLiteMap<Action>
+          internalValueMap =
+            new com.google.protobuf.Internal.EnumLiteMap<Action>() {
+              public Action findValueByNumber(int number) {
+                return Action.valueOf(number);
+              }
+            };
+
+      public final com.google.protobuf.Descriptors.EnumValueDescriptor
+          getValueDescriptor() {
+        return getDescriptor().getValues().get(index);
+      }
+      public final com.google.protobuf.Descriptors.EnumDescriptor
+          getDescriptorForType() {
+        return getDescriptor();
+      }
+      public static final com.google.protobuf.Descriptors.EnumDescriptor
+          getDescriptor() {
+        return com.openxc.BinaryMessages.DiagnosticControlCommand.getDescriptor().getEnumTypes().get(0);
+      }
+
+      private static final Action[] VALUES = values();
+
+      public static Action valueOf(
+          com.google.protobuf.Descriptors.EnumValueDescriptor desc) {
+        if (desc.getType() != getDescriptor()) {
+          throw new java.lang.IllegalArgumentException(
+            "EnumValueDescriptor is not for this type.");
+        }
+        return VALUES[desc.getIndex()];
+      }
+
+      private final int index;
+      private final int value;
+
+      private Action(int index, int value) {
+        this.index = index;
+        this.value = value;
+      }
+
+      // @@protoc_insertion_point(enum_scope:openxc.DiagnosticControlCommand.Action)
+    }
+
+    private int bitField0_;
+    // optional .openxc.DiagnosticRequest request = 1;
+    public static final int REQUEST_FIELD_NUMBER = 1;
+    private com.openxc.BinaryMessages.DiagnosticRequest request_;
+    /**
+     * <code>optional .openxc.DiagnosticRequest request = 1;</code>
+     */
+    public boolean hasRequest() {
+      return ((bitField0_ & 0x00000001) == 0x00000001);
+    }
+    /**
+     * <code>optional .openxc.DiagnosticRequest request = 1;</code>
+     */
+    public com.openxc.BinaryMessages.DiagnosticRequest getRequest() {
+      return request_;
+    }
+    /**
+     * <code>optional .openxc.DiagnosticRequest request = 1;</code>
+     */
+    public com.openxc.BinaryMessages.DiagnosticRequestOrBuilder getRequestOrBuilder() {
+      return request_;
+    }
+
+    // optional .openxc.DiagnosticControlCommand.Action action = 2;
+    public static final int ACTION_FIELD_NUMBER = 2;
+    private com.openxc.BinaryMessages.DiagnosticControlCommand.Action action_;
+    /**
+     * <code>optional .openxc.DiagnosticControlCommand.Action action = 2;</code>
+     */
+    public boolean hasAction() {
+      return ((bitField0_ & 0x00000002) == 0x00000002);
+    }
+    /**
+     * <code>optional .openxc.DiagnosticControlCommand.Action action = 2;</code>
+     */
+    public com.openxc.BinaryMessages.DiagnosticControlCommand.Action getAction() {
+      return action_;
+    }
+
+    private void initFields() {
+      request_ = com.openxc.BinaryMessages.DiagnosticRequest.getDefaultInstance();
+      action_ = com.openxc.BinaryMessages.DiagnosticControlCommand.Action.ADD;
+    }
+    private byte memoizedIsInitialized = -1;
+    public final boolean isInitialized() {
+      byte isInitialized = memoizedIsInitialized;
+      if (isInitialized != -1) return isInitialized == 1;
+
+      memoizedIsInitialized = 1;
+      return true;
+    }
+
+    public void writeTo(com.google.protobuf.CodedOutputStream output)
+                        throws java.io.IOException {
+      getSerializedSize();
+      if (((bitField0_ & 0x00000001) == 0x00000001)) {
+        output.writeMessage(1, request_);
+      }
+      if (((bitField0_ & 0x00000002) == 0x00000002)) {
+        output.writeEnum(2, action_.getNumber());
+      }
+      getUnknownFields().writeTo(output);
+    }
+
+    private int memoizedSerializedSize = -1;
+    public int getSerializedSize() {
+      int size = memoizedSerializedSize;
+      if (size != -1) return size;
+
+      size = 0;
+      if (((bitField0_ & 0x00000001) == 0x00000001)) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeMessageSize(1, request_);
+      }
+      if (((bitField0_ & 0x00000002) == 0x00000002)) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeEnumSize(2, action_.getNumber());
+      }
+      size += getUnknownFields().getSerializedSize();
+      memoizedSerializedSize = size;
+      return size;
+    }
+
+    private static final long serialVersionUID = 0L;
+    @java.lang.Override
+    protected java.lang.Object writeReplace()
+        throws java.io.ObjectStreamException {
+      return super.writeReplace();
+    }
+
+    public static com.openxc.BinaryMessages.DiagnosticControlCommand parseFrom(
+        com.google.protobuf.ByteString data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static com.openxc.BinaryMessages.DiagnosticControlCommand parseFrom(
+        com.google.protobuf.ByteString data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static com.openxc.BinaryMessages.DiagnosticControlCommand parseFrom(byte[] data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static com.openxc.BinaryMessages.DiagnosticControlCommand parseFrom(
+        byte[] data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static com.openxc.BinaryMessages.DiagnosticControlCommand parseFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input);
+    }
+    public static com.openxc.BinaryMessages.DiagnosticControlCommand parseFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input, extensionRegistry);
+    }
+    public static com.openxc.BinaryMessages.DiagnosticControlCommand parseDelimitedFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return PARSER.parseDelimitedFrom(input);
+    }
+    public static com.openxc.BinaryMessages.DiagnosticControlCommand parseDelimitedFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return PARSER.parseDelimitedFrom(input, extensionRegistry);
+    }
+    public static com.openxc.BinaryMessages.DiagnosticControlCommand parseFrom(
+        com.google.protobuf.CodedInputStream input)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input);
+    }
+    public static com.openxc.BinaryMessages.DiagnosticControlCommand parseFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input, extensionRegistry);
+    }
+
+    public static Builder newBuilder() { return Builder.create(); }
+    public Builder newBuilderForType() { return newBuilder(); }
+    public static Builder newBuilder(com.openxc.BinaryMessages.DiagnosticControlCommand prototype) {
+      return newBuilder().mergeFrom(prototype);
+    }
+    public Builder toBuilder() { return newBuilder(this); }
+
+    @java.lang.Override
+    protected Builder newBuilderForType(
+        com.google.protobuf.GeneratedMessage.BuilderParent parent) {
+      Builder builder = new Builder(parent);
+      return builder;
+    }
+    /**
+     * Protobuf type {@code openxc.DiagnosticControlCommand}
+     */
+    public static final class Builder extends
+        com.google.protobuf.GeneratedMessage.Builder<Builder>
+       implements com.openxc.BinaryMessages.DiagnosticControlCommandOrBuilder {
+      public static final com.google.protobuf.Descriptors.Descriptor
+          getDescriptor() {
+        return com.openxc.BinaryMessages.internal_static_openxc_DiagnosticControlCommand_descriptor;
+      }
+
+      protected com.google.protobuf.GeneratedMessage.FieldAccessorTable
+          internalGetFieldAccessorTable() {
+        return com.openxc.BinaryMessages.internal_static_openxc_DiagnosticControlCommand_fieldAccessorTable
+            .ensureFieldAccessorsInitialized(
+                com.openxc.BinaryMessages.DiagnosticControlCommand.class, com.openxc.BinaryMessages.DiagnosticControlCommand.Builder.class);
+      }
+
+      // Construct using com.openxc.BinaryMessages.DiagnosticControlCommand.newBuilder()
+      private Builder() {
+        maybeForceBuilderInitialization();
+      }
+
+      private Builder(
+          com.google.protobuf.GeneratedMessage.BuilderParent parent) {
+        super(parent);
+        maybeForceBuilderInitialization();
+      }
+      private void maybeForceBuilderInitialization() {
+        if (com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders) {
+          getRequestFieldBuilder();
+        }
+      }
+      private static Builder create() {
+        return new Builder();
+      }
+
+      public Builder clear() {
+        super.clear();
+        if (requestBuilder_ == null) {
+          request_ = com.openxc.BinaryMessages.DiagnosticRequest.getDefaultInstance();
+        } else {
+          requestBuilder_.clear();
+        }
+        bitField0_ = (bitField0_ & ~0x00000001);
+        action_ = com.openxc.BinaryMessages.DiagnosticControlCommand.Action.ADD;
+        bitField0_ = (bitField0_ & ~0x00000002);
+        return this;
+      }
+
+      public Builder clone() {
+        return create().mergeFrom(buildPartial());
+      }
+
+      public com.google.protobuf.Descriptors.Descriptor
+          getDescriptorForType() {
+        return com.openxc.BinaryMessages.internal_static_openxc_DiagnosticControlCommand_descriptor;
+      }
+
+      public com.openxc.BinaryMessages.DiagnosticControlCommand getDefaultInstanceForType() {
+        return com.openxc.BinaryMessages.DiagnosticControlCommand.getDefaultInstance();
+      }
+
+      public com.openxc.BinaryMessages.DiagnosticControlCommand build() {
+        com.openxc.BinaryMessages.DiagnosticControlCommand result = buildPartial();
+        if (!result.isInitialized()) {
+          throw newUninitializedMessageException(result);
+        }
+        return result;
+      }
+
+      public com.openxc.BinaryMessages.DiagnosticControlCommand buildPartial() {
+        com.openxc.BinaryMessages.DiagnosticControlCommand result = new com.openxc.BinaryMessages.DiagnosticControlCommand(this);
+        int from_bitField0_ = bitField0_;
+        int to_bitField0_ = 0;
+        if (((from_bitField0_ & 0x00000001) == 0x00000001)) {
+          to_bitField0_ |= 0x00000001;
+        }
+        if (requestBuilder_ == null) {
+          result.request_ = request_;
+        } else {
+          result.request_ = requestBuilder_.build();
+        }
+        if (((from_bitField0_ & 0x00000002) == 0x00000002)) {
+          to_bitField0_ |= 0x00000002;
+        }
+        result.action_ = action_;
+        result.bitField0_ = to_bitField0_;
+        onBuilt();
+        return result;
+      }
+
+      public Builder mergeFrom(com.google.protobuf.Message other) {
+        if (other instanceof com.openxc.BinaryMessages.DiagnosticControlCommand) {
+          return mergeFrom((com.openxc.BinaryMessages.DiagnosticControlCommand)other);
+        } else {
+          super.mergeFrom(other);
+          return this;
+        }
+      }
+
+      public Builder mergeFrom(com.openxc.BinaryMessages.DiagnosticControlCommand other) {
+        if (other == com.openxc.BinaryMessages.DiagnosticControlCommand.getDefaultInstance()) return this;
+        if (other.hasRequest()) {
+          mergeRequest(other.getRequest());
+        }
+        if (other.hasAction()) {
+          setAction(other.getAction());
+        }
+        this.mergeUnknownFields(other.getUnknownFields());
+        return this;
+      }
+
+      public final boolean isInitialized() {
+        return true;
+      }
+
+      public Builder mergeFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws java.io.IOException {
+        com.openxc.BinaryMessages.DiagnosticControlCommand parsedMessage = null;
+        try {
+          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+          parsedMessage = (com.openxc.BinaryMessages.DiagnosticControlCommand) e.getUnfinishedMessage();
+          throw e;
+        } finally {
+          if (parsedMessage != null) {
+            mergeFrom(parsedMessage);
+          }
+        }
+        return this;
+      }
+      private int bitField0_;
+
+      // optional .openxc.DiagnosticRequest request = 1;
+      private com.openxc.BinaryMessages.DiagnosticRequest request_ = com.openxc.BinaryMessages.DiagnosticRequest.getDefaultInstance();
+      private com.google.protobuf.SingleFieldBuilder<
+          com.openxc.BinaryMessages.DiagnosticRequest, com.openxc.BinaryMessages.DiagnosticRequest.Builder, com.openxc.BinaryMessages.DiagnosticRequestOrBuilder> requestBuilder_;
+      /**
+       * <code>optional .openxc.DiagnosticRequest request = 1;</code>
+       */
+      public boolean hasRequest() {
+        return ((bitField0_ & 0x00000001) == 0x00000001);
+      }
+      /**
+       * <code>optional .openxc.DiagnosticRequest request = 1;</code>
+       */
+      public com.openxc.BinaryMessages.DiagnosticRequest getRequest() {
+        if (requestBuilder_ == null) {
+          return request_;
+        } else {
+          return requestBuilder_.getMessage();
+        }
+      }
+      /**
+       * <code>optional .openxc.DiagnosticRequest request = 1;</code>
+       */
+      public Builder setRequest(com.openxc.BinaryMessages.DiagnosticRequest value) {
+        if (requestBuilder_ == null) {
+          if (value == null) {
+            throw new NullPointerException();
+          }
+          request_ = value;
+          onChanged();
+        } else {
+          requestBuilder_.setMessage(value);
+        }
+        bitField0_ |= 0x00000001;
+        return this;
+      }
+      /**
+       * <code>optional .openxc.DiagnosticRequest request = 1;</code>
+       */
+      public Builder setRequest(
+          com.openxc.BinaryMessages.DiagnosticRequest.Builder builderForValue) {
+        if (requestBuilder_ == null) {
+          request_ = builderForValue.build();
+          onChanged();
+        } else {
+          requestBuilder_.setMessage(builderForValue.build());
+        }
+        bitField0_ |= 0x00000001;
+        return this;
+      }
+      /**
+       * <code>optional .openxc.DiagnosticRequest request = 1;</code>
+       */
+      public Builder mergeRequest(com.openxc.BinaryMessages.DiagnosticRequest value) {
+        if (requestBuilder_ == null) {
+          if (((bitField0_ & 0x00000001) == 0x00000001) &&
+              request_ != com.openxc.BinaryMessages.DiagnosticRequest.getDefaultInstance()) {
+            request_ =
+              com.openxc.BinaryMessages.DiagnosticRequest.newBuilder(request_).mergeFrom(value).buildPartial();
+          } else {
+            request_ = value;
+          }
+          onChanged();
+        } else {
+          requestBuilder_.mergeFrom(value);
+        }
+        bitField0_ |= 0x00000001;
+        return this;
+      }
+      /**
+       * <code>optional .openxc.DiagnosticRequest request = 1;</code>
+       */
+      public Builder clearRequest() {
+        if (requestBuilder_ == null) {
+          request_ = com.openxc.BinaryMessages.DiagnosticRequest.getDefaultInstance();
+          onChanged();
+        } else {
+          requestBuilder_.clear();
+        }
+        bitField0_ = (bitField0_ & ~0x00000001);
+        return this;
+      }
+      /**
+       * <code>optional .openxc.DiagnosticRequest request = 1;</code>
+       */
+      public com.openxc.BinaryMessages.DiagnosticRequest.Builder getRequestBuilder() {
+        bitField0_ |= 0x00000001;
+        onChanged();
+        return getRequestFieldBuilder().getBuilder();
+      }
+      /**
+       * <code>optional .openxc.DiagnosticRequest request = 1;</code>
+       */
+      public com.openxc.BinaryMessages.DiagnosticRequestOrBuilder getRequestOrBuilder() {
+        if (requestBuilder_ != null) {
+          return requestBuilder_.getMessageOrBuilder();
+        } else {
+          return request_;
+        }
+      }
+      /**
+       * <code>optional .openxc.DiagnosticRequest request = 1;</code>
+       */
+      private com.google.protobuf.SingleFieldBuilder<
+          com.openxc.BinaryMessages.DiagnosticRequest, com.openxc.BinaryMessages.DiagnosticRequest.Builder, com.openxc.BinaryMessages.DiagnosticRequestOrBuilder> 
+          getRequestFieldBuilder() {
+        if (requestBuilder_ == null) {
+          requestBuilder_ = new com.google.protobuf.SingleFieldBuilder<
+              com.openxc.BinaryMessages.DiagnosticRequest, com.openxc.BinaryMessages.DiagnosticRequest.Builder, com.openxc.BinaryMessages.DiagnosticRequestOrBuilder>(
+                  request_,
+                  getParentForChildren(),
+                  isClean());
+          request_ = null;
+        }
+        return requestBuilder_;
+      }
+
+      // optional .openxc.DiagnosticControlCommand.Action action = 2;
+      private com.openxc.BinaryMessages.DiagnosticControlCommand.Action action_ = com.openxc.BinaryMessages.DiagnosticControlCommand.Action.ADD;
+      /**
+       * <code>optional .openxc.DiagnosticControlCommand.Action action = 2;</code>
        */
-      public com.openxc.BinaryMessages.ControlCommand.Action getAction() {
+      public boolean hasAction() {
+        return ((bitField0_ & 0x00000002) == 0x00000002);
+      }
+      /**
+       * <code>optional .openxc.DiagnosticControlCommand.Action action = 2;</code>
+       */
+      public com.openxc.BinaryMessages.DiagnosticControlCommand.Action getAction() {
         return action_;
       }
       /**
-       * <code>optional .openxc.ControlCommand.Action action = 3;</code>
+       * <code>optional .openxc.DiagnosticControlCommand.Action action = 2;</code>
        */
-      public Builder setAction(com.openxc.BinaryMessages.ControlCommand.Action value) {
+      public Builder setAction(com.openxc.BinaryMessages.DiagnosticControlCommand.Action value) {
         if (value == null) {
           throw new NullPointerException();
         }
-        bitField0_ |= 0x00000004;
+        bitField0_ |= 0x00000002;
         action_ = value;
         onChanged();
         return this;
       }
       /**
-       * <code>optional .openxc.ControlCommand.Action action = 3;</code>
+       * <code>optional .openxc.DiagnosticControlCommand.Action action = 2;</code>
        */
       public Builder clearAction() {
-        bitField0_ = (bitField0_ & ~0x00000004);
-        action_ = com.openxc.BinaryMessages.ControlCommand.Action.ADD;
+        bitField0_ = (bitField0_ & ~0x00000002);
+        action_ = com.openxc.BinaryMessages.DiagnosticControlCommand.Action.ADD;
         onChanged();
         return this;
       }
 
-      // @@protoc_insertion_point(builder_scope:openxc.ControlCommand)
+      // @@protoc_insertion_point(builder_scope:openxc.DiagnosticControlCommand)
     }
 
     static {
-      defaultInstance = new ControlCommand(true);
+      defaultInstance = new DiagnosticControlCommand(true);
       defaultInstance.initFields();
     }
 
-    // @@protoc_insertion_point(class_scope:openxc.ControlCommand)
+    // @@protoc_insertion_point(class_scope:openxc.DiagnosticControlCommand)
+  }
+
+  public interface PassthroughModeControlCommandOrBuilder
+      extends com.google.protobuf.MessageOrBuilder {
+
+    // optional int32 bus = 1;
+    /**
+     * <code>optional int32 bus = 1;</code>
+     */
+    boolean hasBus();
+    /**
+     * <code>optional int32 bus = 1;</code>
+     */
+    int getBus();
+
+    // optional .openxc.PassthroughModeControlCommand.PassthroughMode mode = 2;
+    /**
+     * <code>optional .openxc.PassthroughModeControlCommand.PassthroughMode mode = 2;</code>
+     */
+    boolean hasMode();
+    /**
+     * <code>optional .openxc.PassthroughModeControlCommand.PassthroughMode mode = 2;</code>
+     */
+    com.openxc.BinaryMessages.PassthroughModeControlCommand.PassthroughMode getMode();
+  }
+  /**
+   * Protobuf type {@code openxc.PassthroughModeControlCommand}
+   */
+  public static final class PassthroughModeControlCommand extends
+      com.google.protobuf.GeneratedMessage
+      implements PassthroughModeControlCommandOrBuilder {
+    // Use PassthroughModeControlCommand.newBuilder() to construct.
+    private PassthroughModeControlCommand(com.google.protobuf.GeneratedMessage.Builder<?> builder) {
+      super(builder);
+      this.unknownFields = builder.getUnknownFields();
+    }
+    private PassthroughModeControlCommand(boolean noInit) { this.unknownFields = com.google.protobuf.UnknownFieldSet.getDefaultInstance(); }
+
+    private static final PassthroughModeControlCommand defaultInstance;
+    public static PassthroughModeControlCommand getDefaultInstance() {
+      return defaultInstance;
+    }
+
+    public PassthroughModeControlCommand getDefaultInstanceForType() {
+      return defaultInstance;
+    }
+
+    private final com.google.protobuf.UnknownFieldSet unknownFields;
+    @java.lang.Override
+    public final com.google.protobuf.UnknownFieldSet
+        getUnknownFields() {
+      return this.unknownFields;
+    }
+    private PassthroughModeControlCommand(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      initFields();
+      int mutable_bitField0_ = 0;
+      com.google.protobuf.UnknownFieldSet.Builder unknownFields =
+          com.google.protobuf.UnknownFieldSet.newBuilder();
+      try {
+        boolean done = false;
+        while (!done) {
+          int tag = input.readTag();
+          switch (tag) {
+            case 0:
+              done = true;
+              break;
+            default: {
+              if (!parseUnknownField(input, unknownFields,
+                                     extensionRegistry, tag)) {
+                done = true;
+              }
+              break;
+            }
+            case 8: {
+              bitField0_ |= 0x00000001;
+              bus_ = input.readInt32();
+              break;
+            }
+            case 16: {
+              int rawValue = input.readEnum();
+              com.openxc.BinaryMessages.PassthroughModeControlCommand.PassthroughMode value = com.openxc.BinaryMessages.PassthroughModeControlCommand.PassthroughMode.valueOf(rawValue);
+              if (value == null) {
+                unknownFields.mergeVarintField(2, rawValue);
+              } else {
+                bitField0_ |= 0x00000002;
+                mode_ = value;
+              }
+              break;
+            }
+          }
+        }
+      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+        throw e.setUnfinishedMessage(this);
+      } catch (java.io.IOException e) {
+        throw new com.google.protobuf.InvalidProtocolBufferException(
+            e.getMessage()).setUnfinishedMessage(this);
+      } finally {
+        this.unknownFields = unknownFields.build();
+        makeExtensionsImmutable();
+      }
+    }
+    public static final com.google.protobuf.Descriptors.Descriptor
+        getDescriptor() {
+      return com.openxc.BinaryMessages.internal_static_openxc_PassthroughModeControlCommand_descriptor;
+    }
+
+    protected com.google.protobuf.GeneratedMessage.FieldAccessorTable
+        internalGetFieldAccessorTable() {
+      return com.openxc.BinaryMessages.internal_static_openxc_PassthroughModeControlCommand_fieldAccessorTable
+          .ensureFieldAccessorsInitialized(
+              com.openxc.BinaryMessages.PassthroughModeControlCommand.class, com.openxc.BinaryMessages.PassthroughModeControlCommand.Builder.class);
+    }
+
+    public static com.google.protobuf.Parser<PassthroughModeControlCommand> PARSER =
+        new com.google.protobuf.AbstractParser<PassthroughModeControlCommand>() {
+      public PassthroughModeControlCommand parsePartialFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws com.google.protobuf.InvalidProtocolBufferException {
+        return new PassthroughModeControlCommand(input, extensionRegistry);
+      }
+    };
+
+    @java.lang.Override
+    public com.google.protobuf.Parser<PassthroughModeControlCommand> getParserForType() {
+      return PARSER;
+    }
+
+    /**
+     * Protobuf enum {@code openxc.PassthroughModeControlCommand.PassthroughMode}
+     */
+    public enum PassthroughMode
+        implements com.google.protobuf.ProtocolMessageEnum {
+      /**
+       * <code>OFF = 1;</code>
+       */
+      OFF(0, 1),
+      /**
+       * <code>FILTERED = 2;</code>
+       */
+      FILTERED(1, 2),
+      /**
+       * <code>UNFILTERED = 3;</code>
+       */
+      UNFILTERED(2, 3),
+      ;
+
+      /**
+       * <code>OFF = 1;</code>
+       */
+      public static final int OFF_VALUE = 1;
+      /**
+       * <code>FILTERED = 2;</code>
+       */
+      public static final int FILTERED_VALUE = 2;
+      /**
+       * <code>UNFILTERED = 3;</code>
+       */
+      public static final int UNFILTERED_VALUE = 3;
+
+
+      public final int getNumber() { return value; }
+
+      public static PassthroughMode valueOf(int value) {
+        switch (value) {
+          case 1: return OFF;
+          case 2: return FILTERED;
+          case 3: return UNFILTERED;
+          default: return null;
+        }
+      }
+
+      public static com.google.protobuf.Internal.EnumLiteMap<PassthroughMode>
+          internalGetValueMap() {
+        return internalValueMap;
+      }
+      private static com.google.protobuf.Internal.EnumLiteMap<PassthroughMode>
+          internalValueMap =
+            new com.google.protobuf.Internal.EnumLiteMap<PassthroughMode>() {
+              public PassthroughMode findValueByNumber(int number) {
+                return PassthroughMode.valueOf(number);
+              }
+            };
+
+      public final com.google.protobuf.Descriptors.EnumValueDescriptor
+          getValueDescriptor() {
+        return getDescriptor().getValues().get(index);
+      }
+      public final com.google.protobuf.Descriptors.EnumDescriptor
+          getDescriptorForType() {
+        return getDescriptor();
+      }
+      public static final com.google.protobuf.Descriptors.EnumDescriptor
+          getDescriptor() {
+        return com.openxc.BinaryMessages.PassthroughModeControlCommand.getDescriptor().getEnumTypes().get(0);
+      }
+
+      private static final PassthroughMode[] VALUES = values();
+
+      public static PassthroughMode valueOf(
+          com.google.protobuf.Descriptors.EnumValueDescriptor desc) {
+        if (desc.getType() != getDescriptor()) {
+          throw new java.lang.IllegalArgumentException(
+            "EnumValueDescriptor is not for this type.");
+        }
+        return VALUES[desc.getIndex()];
+      }
+
+      private final int index;
+      private final int value;
+
+      private PassthroughMode(int index, int value) {
+        this.index = index;
+        this.value = value;
+      }
+
+      // @@protoc_insertion_point(enum_scope:openxc.PassthroughModeControlCommand.PassthroughMode)
+    }
+
+    private int bitField0_;
+    // optional int32 bus = 1;
+    public static final int BUS_FIELD_NUMBER = 1;
+    private int bus_;
+    /**
+     * <code>optional int32 bus = 1;</code>
+     */
+    public boolean hasBus() {
+      return ((bitField0_ & 0x00000001) == 0x00000001);
+    }
+    /**
+     * <code>optional int32 bus = 1;</code>
+     */
+    public int getBus() {
+      return bus_;
+    }
+
+    // optional .openxc.PassthroughModeControlCommand.PassthroughMode mode = 2;
+    public static final int MODE_FIELD_NUMBER = 2;
+    private com.openxc.BinaryMessages.PassthroughModeControlCommand.PassthroughMode mode_;
+    /**
+     * <code>optional .openxc.PassthroughModeControlCommand.PassthroughMode mode = 2;</code>
+     */
+    public boolean hasMode() {
+      return ((bitField0_ & 0x00000002) == 0x00000002);
+    }
+    /**
+     * <code>optional .openxc.PassthroughModeControlCommand.PassthroughMode mode = 2;</code>
+     */
+    public com.openxc.BinaryMessages.PassthroughModeControlCommand.PassthroughMode getMode() {
+      return mode_;
+    }
+
+    private void initFields() {
+      bus_ = 0;
+      mode_ = com.openxc.BinaryMessages.PassthroughModeControlCommand.PassthroughMode.OFF;
+    }
+    private byte memoizedIsInitialized = -1;
+    public final boolean isInitialized() {
+      byte isInitialized = memoizedIsInitialized;
+      if (isInitialized != -1) return isInitialized == 1;
+
+      memoizedIsInitialized = 1;
+      return true;
+    }
+
+    public void writeTo(com.google.protobuf.CodedOutputStream output)
+                        throws java.io.IOException {
+      getSerializedSize();
+      if (((bitField0_ & 0x00000001) == 0x00000001)) {
+        output.writeInt32(1, bus_);
+      }
+      if (((bitField0_ & 0x00000002) == 0x00000002)) {
+        output.writeEnum(2, mode_.getNumber());
+      }
+      getUnknownFields().writeTo(output);
+    }
+
+    private int memoizedSerializedSize = -1;
+    public int getSerializedSize() {
+      int size = memoizedSerializedSize;
+      if (size != -1) return size;
+
+      size = 0;
+      if (((bitField0_ & 0x00000001) == 0x00000001)) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeInt32Size(1, bus_);
+      }
+      if (((bitField0_ & 0x00000002) == 0x00000002)) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeEnumSize(2, mode_.getNumber());
+      }
+      size += getUnknownFields().getSerializedSize();
+      memoizedSerializedSize = size;
+      return size;
+    }
+
+    private static final long serialVersionUID = 0L;
+    @java.lang.Override
+    protected java.lang.Object writeReplace()
+        throws java.io.ObjectStreamException {
+      return super.writeReplace();
+    }
+
+    public static com.openxc.BinaryMessages.PassthroughModeControlCommand parseFrom(
+        com.google.protobuf.ByteString data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static com.openxc.BinaryMessages.PassthroughModeControlCommand parseFrom(
+        com.google.protobuf.ByteString data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static com.openxc.BinaryMessages.PassthroughModeControlCommand parseFrom(byte[] data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static com.openxc.BinaryMessages.PassthroughModeControlCommand parseFrom(
+        byte[] data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static com.openxc.BinaryMessages.PassthroughModeControlCommand parseFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input);
+    }
+    public static com.openxc.BinaryMessages.PassthroughModeControlCommand parseFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input, extensionRegistry);
+    }
+    public static com.openxc.BinaryMessages.PassthroughModeControlCommand parseDelimitedFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return PARSER.parseDelimitedFrom(input);
+    }
+    public static com.openxc.BinaryMessages.PassthroughModeControlCommand parseDelimitedFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return PARSER.parseDelimitedFrom(input, extensionRegistry);
+    }
+    public static com.openxc.BinaryMessages.PassthroughModeControlCommand parseFrom(
+        com.google.protobuf.CodedInputStream input)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input);
+    }
+    public static com.openxc.BinaryMessages.PassthroughModeControlCommand parseFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return PARSER.parseFrom(input, extensionRegistry);
+    }
+
+    public static Builder newBuilder() { return Builder.create(); }
+    public Builder newBuilderForType() { return newBuilder(); }
+    public static Builder newBuilder(com.openxc.BinaryMessages.PassthroughModeControlCommand prototype) {
+      return newBuilder().mergeFrom(prototype);
+    }
+    public Builder toBuilder() { return newBuilder(this); }
+
+    @java.lang.Override
+    protected Builder newBuilderForType(
+        com.google.protobuf.GeneratedMessage.BuilderParent parent) {
+      Builder builder = new Builder(parent);
+      return builder;
+    }
+    /**
+     * Protobuf type {@code openxc.PassthroughModeControlCommand}
+     */
+    public static final class Builder extends
+        com.google.protobuf.GeneratedMessage.Builder<Builder>
+       implements com.openxc.BinaryMessages.PassthroughModeControlCommandOrBuilder {
+      public static final com.google.protobuf.Descriptors.Descriptor
+          getDescriptor() {
+        return com.openxc.BinaryMessages.internal_static_openxc_PassthroughModeControlCommand_descriptor;
+      }
+
+      protected com.google.protobuf.GeneratedMessage.FieldAccessorTable
+          internalGetFieldAccessorTable() {
+        return com.openxc.BinaryMessages.internal_static_openxc_PassthroughModeControlCommand_fieldAccessorTable
+            .ensureFieldAccessorsInitialized(
+                com.openxc.BinaryMessages.PassthroughModeControlCommand.class, com.openxc.BinaryMessages.PassthroughModeControlCommand.Builder.class);
+      }
+
+      // Construct using com.openxc.BinaryMessages.PassthroughModeControlCommand.newBuilder()
+      private Builder() {
+        maybeForceBuilderInitialization();
+      }
+
+      private Builder(
+          com.google.protobuf.GeneratedMessage.BuilderParent parent) {
+        super(parent);
+        maybeForceBuilderInitialization();
+      }
+      private void maybeForceBuilderInitialization() {
+        if (com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders) {
+        }
+      }
+      private static Builder create() {
+        return new Builder();
+      }
+
+      public Builder clear() {
+        super.clear();
+        bus_ = 0;
+        bitField0_ = (bitField0_ & ~0x00000001);
+        mode_ = com.openxc.BinaryMessages.PassthroughModeControlCommand.PassthroughMode.OFF;
+        bitField0_ = (bitField0_ & ~0x00000002);
+        return this;
+      }
+
+      public Builder clone() {
+        return create().mergeFrom(buildPartial());
+      }
+
+      public com.google.protobuf.Descriptors.Descriptor
+          getDescriptorForType() {
+        return com.openxc.BinaryMessages.internal_static_openxc_PassthroughModeControlCommand_descriptor;
+      }
+
+      public com.openxc.BinaryMessages.PassthroughModeControlCommand getDefaultInstanceForType() {
+        return com.openxc.BinaryMessages.PassthroughModeControlCommand.getDefaultInstance();
+      }
+
+      public com.openxc.BinaryMessages.PassthroughModeControlCommand build() {
+        com.openxc.BinaryMessages.PassthroughModeControlCommand result = buildPartial();
+        if (!result.isInitialized()) {
+          throw newUninitializedMessageException(result);
+        }
+        return result;
+      }
+
+      public com.openxc.BinaryMessages.PassthroughModeControlCommand buildPartial() {
+        com.openxc.BinaryMessages.PassthroughModeControlCommand result = new com.openxc.BinaryMessages.PassthroughModeControlCommand(this);
+        int from_bitField0_ = bitField0_;
+        int to_bitField0_ = 0;
+        if (((from_bitField0_ & 0x00000001) == 0x00000001)) {
+          to_bitField0_ |= 0x00000001;
+        }
+        result.bus_ = bus_;
+        if (((from_bitField0_ & 0x00000002) == 0x00000002)) {
+          to_bitField0_ |= 0x00000002;
+        }
+        result.mode_ = mode_;
+        result.bitField0_ = to_bitField0_;
+        onBuilt();
+        return result;
+      }
+
+      public Builder mergeFrom(com.google.protobuf.Message other) {
+        if (other instanceof com.openxc.BinaryMessages.PassthroughModeControlCommand) {
+          return mergeFrom((com.openxc.BinaryMessages.PassthroughModeControlCommand)other);
+        } else {
+          super.mergeFrom(other);
+          return this;
+        }
+      }
+
+      public Builder mergeFrom(com.openxc.BinaryMessages.PassthroughModeControlCommand other) {
+        if (other == com.openxc.BinaryMessages.PassthroughModeControlCommand.getDefaultInstance()) return this;
+        if (other.hasBus()) {
+          setBus(other.getBus());
+        }
+        if (other.hasMode()) {
+          setMode(other.getMode());
+        }
+        this.mergeUnknownFields(other.getUnknownFields());
+        return this;
+      }
+
+      public final boolean isInitialized() {
+        return true;
+      }
+
+      public Builder mergeFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws java.io.IOException {
+        com.openxc.BinaryMessages.PassthroughModeControlCommand parsedMessage = null;
+        try {
+          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+          parsedMessage = (com.openxc.BinaryMessages.PassthroughModeControlCommand) e.getUnfinishedMessage();
+          throw e;
+        } finally {
+          if (parsedMessage != null) {
+            mergeFrom(parsedMessage);
+          }
+        }
+        return this;
+      }
+      private int bitField0_;
+
+      // optional int32 bus = 1;
+      private int bus_ ;
+      /**
+       * <code>optional int32 bus = 1;</code>
+       */
+      public boolean hasBus() {
+        return ((bitField0_ & 0x00000001) == 0x00000001);
+      }
+      /**
+       * <code>optional int32 bus = 1;</code>
+       */
+      public int getBus() {
+        return bus_;
+      }
+      /**
+       * <code>optional int32 bus = 1;</code>
+       */
+      public Builder setBus(int value) {
+        bitField0_ |= 0x00000001;
+        bus_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>optional int32 bus = 1;</code>
+       */
+      public Builder clearBus() {
+        bitField0_ = (bitField0_ & ~0x00000001);
+        bus_ = 0;
+        onChanged();
+        return this;
+      }
+
+      // optional .openxc.PassthroughModeControlCommand.PassthroughMode mode = 2;
+      private com.openxc.BinaryMessages.PassthroughModeControlCommand.PassthroughMode mode_ = com.openxc.BinaryMessages.PassthroughModeControlCommand.PassthroughMode.OFF;
+      /**
+       * <code>optional .openxc.PassthroughModeControlCommand.PassthroughMode mode = 2;</code>
+       */
+      public boolean hasMode() {
+        return ((bitField0_ & 0x00000002) == 0x00000002);
+      }
+      /**
+       * <code>optional .openxc.PassthroughModeControlCommand.PassthroughMode mode = 2;</code>
+       */
+      public com.openxc.BinaryMessages.PassthroughModeControlCommand.PassthroughMode getMode() {
+        return mode_;
+      }
+      /**
+       * <code>optional .openxc.PassthroughModeControlCommand.PassthroughMode mode = 2;</code>
+       */
+      public Builder setMode(com.openxc.BinaryMessages.PassthroughModeControlCommand.PassthroughMode value) {
+        if (value == null) {
+          throw new NullPointerException();
+        }
+        bitField0_ |= 0x00000002;
+        mode_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>optional .openxc.PassthroughModeControlCommand.PassthroughMode mode = 2;</code>
+       */
+      public Builder clearMode() {
+        bitField0_ = (bitField0_ & ~0x00000002);
+        mode_ = com.openxc.BinaryMessages.PassthroughModeControlCommand.PassthroughMode.OFF;
+        onChanged();
+        return this;
+      }
+
+      // @@protoc_insertion_point(builder_scope:openxc.PassthroughModeControlCommand)
+    }
+
+    static {
+      defaultInstance = new PassthroughModeControlCommand(true);
+      defaultInstance.initFields();
+    }
+
+    // @@protoc_insertion_point(class_scope:openxc.PassthroughModeControlCommand)
   }
 
   public interface CommandResponseOrBuilder
@@ -7697,6 +8982,16 @@ public final class BinaryMessages {
     com.google.protobuf.GeneratedMessage.FieldAccessorTable
       internal_static_openxc_ControlCommand_fieldAccessorTable;
   private static com.google.protobuf.Descriptors.Descriptor
+    internal_static_openxc_DiagnosticControlCommand_descriptor;
+  private static
+    com.google.protobuf.GeneratedMessage.FieldAccessorTable
+      internal_static_openxc_DiagnosticControlCommand_fieldAccessorTable;
+  private static com.google.protobuf.Descriptors.Descriptor
+    internal_static_openxc_PassthroughModeControlCommand_descriptor;
+  private static
+    com.google.protobuf.GeneratedMessage.FieldAccessorTable
+      internal_static_openxc_PassthroughModeControlCommand_fieldAccessorTable;
+  private static com.google.protobuf.Descriptors.Descriptor
     internal_static_openxc_CommandResponse_descriptor;
   private static
     com.google.protobuf.GeneratedMessage.FieldAccessorTable
@@ -7742,37 +9037,46 @@ public final class BinaryMessages {
       "ANSLATED\020\002\022\016\n\nDIAGNOSTIC\020\003\022\023\n\017CONTROL_CO",
       "MMAND\020\004\022\024\n\020COMMAND_RESPONSE\020\005\";\n\nRawMess" +
       "age\022\013\n\003bus\030\001 \001(\005\022\022\n\nmessage_id\030\002 \001(\r\022\014\n\004" +
-      "data\030\003 \001(\014\"\364\001\n\016ControlCommand\022)\n\004type\030\001 " +
-      "\001(\0162\033.openxc.ControlCommand.Type\0225\n\022diag" +
-      "nostic_request\030\002 \001(\0132\031.openxc.Diagnostic" +
-      "Request\022-\n\006action\030\003 \001(\0162\035.openxc.Control" +
-      "Command.Action\"2\n\004Type\022\013\n\007VERSION\020\001\022\r\n\tD" +
-      "EVICE_ID\020\002\022\016\n\nDIAGNOSTIC\020\003\"\035\n\006Action\022\007\n\003" +
-      "ADD\020\001\022\n\n\006CANCEL\020\002\"]\n\017CommandResponse\022)\n\004" +
-      "type\030\001 \001(\0162\033.openxc.ControlCommand.Type\022",
-      "\017\n\007message\030\002 \001(\t\022\016\n\006status\030\003 \001(\010\"\375\001\n\021Dia" +
-      "gnosticRequest\022\013\n\003bus\030\001 \001(\005\022\022\n\nmessage_i" +
-      "d\030\002 \001(\r\022\014\n\004mode\030\003 \001(\r\022\013\n\003pid\030\004 \001(\r\022\017\n\007pa" +
-      "yload\030\005 \001(\014\022\032\n\022multiple_responses\030\006 \001(\010\022" +
-      "\021\n\tfrequency\030\007 \001(\001\022\014\n\004name\030\010 \001(\t\022;\n\014deco" +
-      "ded_type\030\t \001(\0162%.openxc.DiagnosticReques" +
-      "t.DecodedType\"!\n\013DecodedType\022\010\n\004NONE\020\001\022\010" +
-      "\n\004OBD2\020\002\"\241\001\n\022DiagnosticResponse\022\013\n\003bus\030\001" +
-      " \001(\005\022\022\n\nmessage_id\030\002 \001(\r\022\014\n\004mode\030\003 \001(\r\022\013" +
-      "\n\003pid\030\004 \001(\r\022\017\n\007success\030\005 \001(\010\022\036\n\026negative",
-      "_response_code\030\006 \001(\r\022\017\n\007payload\030\007 \001(\014\022\r\n" +
-      "\005value\030\010 \001(\001\"\242\001\n\014DynamicField\022\'\n\004type\030\001 " +
-      "\001(\0162\031.openxc.DynamicField.Type\022\024\n\014string" +
-      "_value\030\002 \001(\t\022\025\n\rnumeric_value\030\003 \001(\001\022\025\n\rb" +
-      "oolean_value\030\004 \001(\010\"%\n\004Type\022\n\n\006STRING\020\001\022\007" +
-      "\n\003NUM\020\002\022\010\n\004BOOL\020\003\"\367\001\n\021TranslatedMessage\022" +
-      ",\n\004type\030\001 \001(\0162\036.openxc.TranslatedMessage" +
-      ".Type\022\014\n\004name\030\002 \001(\t\022#\n\005value\030\003 \001(\0132\024.ope" +
-      "nxc.DynamicField\022#\n\005event\030\004 \001(\0132\024.openxc" +
-      ".DynamicField\"\\\n\004Type\022\n\n\006STRING\020\001\022\007\n\003NUM",
-      "\020\002\022\010\n\004BOOL\020\003\022\022\n\016EVENTED_STRING\020\004\022\017\n\013EVEN" +
-      "TED_NUM\020\005\022\020\n\014EVENTED_BOOL\020\006B\034\n\ncom.openx" +
-      "cB\016BinaryMessages"
+      "data\030\003 \001(\014\"\207\002\n\016ControlCommand\022)\n\004type\030\001 " +
+      "\001(\0162\033.openxc.ControlCommand.Type\022<\n\022diag" +
+      "nostic_request\030\002 \001(\0132 .openxc.Diagnostic" +
+      "ControlCommand\022G\n\030passthrough_mode_reque" +
+      "st\030\003 \001(\0132%.openxc.PassthroughModeControl" +
+      "Command\"C\n\004Type\022\013\n\007VERSION\020\001\022\r\n\tDEVICE_I" +
+      "D\020\002\022\016\n\nDIAGNOSTIC\020\003\022\017\n\013PASSTHROUGH\020\004\"\236\001\n" +
+      "\030DiagnosticControlCommand\022*\n\007request\030\001 \001",
+      "(\0132\031.openxc.DiagnosticRequest\0227\n\006action\030" +
+      "\002 \001(\0162\'.openxc.DiagnosticControlCommand." +
+      "Action\"\035\n\006Action\022\007\n\003ADD\020\001\022\n\n\006CANCEL\020\002\"\253\001" +
+      "\n\035PassthroughModeControlCommand\022\013\n\003bus\030\001" +
+      " \001(\005\022C\n\004mode\030\002 \001(\01625.openxc.PassthroughM" +
+      "odeControlCommand.PassthroughMode\"8\n\017Pas" +
+      "sthroughMode\022\007\n\003OFF\020\001\022\014\n\010FILTERED\020\002\022\016\n\nU" +
+      "NFILTERED\020\003\"]\n\017CommandResponse\022)\n\004type\030\001" +
+      " \001(\0162\033.openxc.ControlCommand.Type\022\017\n\007mes" +
+      "sage\030\002 \001(\t\022\016\n\006status\030\003 \001(\010\"\375\001\n\021Diagnosti",
+      "cRequest\022\013\n\003bus\030\001 \001(\005\022\022\n\nmessage_id\030\002 \001(" +
+      "\r\022\014\n\004mode\030\003 \001(\r\022\013\n\003pid\030\004 \001(\r\022\017\n\007payload\030" +
+      "\005 \001(\014\022\032\n\022multiple_responses\030\006 \001(\010\022\021\n\tfre" +
+      "quency\030\007 \001(\001\022\014\n\004name\030\010 \001(\t\022;\n\014decoded_ty" +
+      "pe\030\t \001(\0162%.openxc.DiagnosticRequest.Deco" +
+      "dedType\"!\n\013DecodedType\022\010\n\004NONE\020\001\022\010\n\004OBD2" +
+      "\020\002\"\241\001\n\022DiagnosticResponse\022\013\n\003bus\030\001 \001(\005\022\022" +
+      "\n\nmessage_id\030\002 \001(\r\022\014\n\004mode\030\003 \001(\r\022\013\n\003pid\030" +
+      "\004 \001(\r\022\017\n\007success\030\005 \001(\010\022\036\n\026negative_respo" +
+      "nse_code\030\006 \001(\r\022\017\n\007payload\030\007 \001(\014\022\r\n\005value",
+      "\030\010 \001(\001\"\242\001\n\014DynamicField\022\'\n\004type\030\001 \001(\0162\031." +
+      "openxc.DynamicField.Type\022\024\n\014string_value" +
+      "\030\002 \001(\t\022\025\n\rnumeric_value\030\003 \001(\001\022\025\n\rboolean" +
+      "_value\030\004 \001(\010\"%\n\004Type\022\n\n\006STRING\020\001\022\007\n\003NUM\020" +
+      "\002\022\010\n\004BOOL\020\003\"\367\001\n\021TranslatedMessage\022,\n\004typ" +
+      "e\030\001 \001(\0162\036.openxc.TranslatedMessage.Type\022" +
+      "\014\n\004name\030\002 \001(\t\022#\n\005value\030\003 \001(\0132\024.openxc.Dy" +
+      "namicField\022#\n\005event\030\004 \001(\0132\024.openxc.Dynam" +
+      "icField\"\\\n\004Type\022\n\n\006STRING\020\001\022\007\n\003NUM\020\002\022\010\n\004" +
+      "BOOL\020\003\022\022\n\016EVENTED_STRING\020\004\022\017\n\013EVENTED_NU",
+      "M\020\005\022\020\n\014EVENTED_BOOL\020\006B\034\n\ncom.openxcB\016Bin" +
+      "aryMessages"
     };
     com.google.protobuf.Descriptors.FileDescriptor.InternalDescriptorAssigner assigner =
       new com.google.protobuf.Descriptors.FileDescriptor.InternalDescriptorAssigner() {
@@ -7796,33 +9100,45 @@ public final class BinaryMessages {
           internal_static_openxc_ControlCommand_fieldAccessorTable = new
             com.google.protobuf.GeneratedMessage.FieldAccessorTable(
               internal_static_openxc_ControlCommand_descriptor,
-              new java.lang.String[] { "Type", "DiagnosticRequest", "Action", });
-          internal_static_openxc_CommandResponse_descriptor =
+              new java.lang.String[] { "Type", "DiagnosticRequest", "PassthroughModeRequest", });
+          internal_static_openxc_DiagnosticControlCommand_descriptor =
             getDescriptor().getMessageTypes().get(3);
+          internal_static_openxc_DiagnosticControlCommand_fieldAccessorTable = new
+            com.google.protobuf.GeneratedMessage.FieldAccessorTable(
+              internal_static_openxc_DiagnosticControlCommand_descriptor,
+              new java.lang.String[] { "Request", "Action", });
+          internal_static_openxc_PassthroughModeControlCommand_descriptor =
+            getDescriptor().getMessageTypes().get(4);
+          internal_static_openxc_PassthroughModeControlCommand_fieldAccessorTable = new
+            com.google.protobuf.GeneratedMessage.FieldAccessorTable(
+              internal_static_openxc_PassthroughModeControlCommand_descriptor,
+              new java.lang.String[] { "Bus", "Mode", });
+          internal_static_openxc_CommandResponse_descriptor =
+            getDescriptor().getMessageTypes().get(5);
           internal_static_openxc_CommandResponse_fieldAccessorTable = new
             com.google.protobuf.GeneratedMessage.FieldAccessorTable(
               internal_static_openxc_CommandResponse_descriptor,
               new java.lang.String[] { "Type", "Message", "Status", });
           internal_static_openxc_DiagnosticRequest_descriptor =
-            getDescriptor().getMessageTypes().get(4);
+            getDescriptor().getMessageTypes().get(6);
           internal_static_openxc_DiagnosticRequest_fieldAccessorTable = new
             com.google.protobuf.GeneratedMessage.FieldAccessorTable(
               internal_static_openxc_DiagnosticRequest_descriptor,
               new java.lang.String[] { "Bus", "MessageId", "Mode", "Pid", "Payload", "MultipleResponses", "Frequency", "Name", "DecodedType", });
           internal_static_openxc_DiagnosticResponse_descriptor =
-            getDescriptor().getMessageTypes().get(5);
+            getDescriptor().getMessageTypes().get(7);
           internal_static_openxc_DiagnosticResponse_fieldAccessorTable = new
             com.google.protobuf.GeneratedMessage.FieldAccessorTable(
               internal_static_openxc_DiagnosticResponse_descriptor,
               new java.lang.String[] { "Bus", "MessageId", "Mode", "Pid", "Success", "NegativeResponseCode", "Payload", "Value", });
           internal_static_openxc_DynamicField_descriptor =
-            getDescriptor().getMessageTypes().get(6);
+            getDescriptor().getMessageTypes().get(8);
           internal_static_openxc_DynamicField_fieldAccessorTable = new
             com.google.protobuf.GeneratedMessage.FieldAccessorTable(
               internal_static_openxc_DynamicField_descriptor,
               new java.lang.String[] { "Type", "StringValue", "NumericValue", "BooleanValue", });
           internal_static_openxc_TranslatedMessage_descriptor =
-            getDescriptor().getMessageTypes().get(7);
+            getDescriptor().getMessageTypes().get(9);
           internal_static_openxc_TranslatedMessage_fieldAccessorTable = new
             com.google.protobuf.GeneratedMessage.FieldAccessorTable(
               internal_static_openxc_TranslatedMessage_descriptor,
diff --git a/gen/python/openxc_pb2.py b/gen/python/openxc_pb2.py
index 8d0a7975..38be6b4a 100644
--- a/gen/python/openxc_pb2.py
+++ b/gen/python/openxc_pb2.py
@@ -13,7 +13,7 @@ from google.protobuf import descriptor_pb2
 DESCRIPTOR = _descriptor.FileDescriptor(
   name='openxc.proto',
   package='openxc',
-  serialized_pb='\n\x0copenxc.proto\x12\x06openxc\"\x94\x03\n\x0eVehicleMessage\x12)\n\x04type\x18\x01 \x01(\x0e\x32\x1b.openxc.VehicleMessage.Type\x12\'\n\x0braw_message\x18\x02 \x01(\x0b\x32\x12.openxc.RawMessage\x12\x35\n\x12translated_message\x18\x03 \x01(\x0b\x32\x19.openxc.TranslatedMessage\x12\x37\n\x13\x64iagnostic_response\x18\x04 \x01(\x0b\x32\x1a.openxc.DiagnosticResponse\x12/\n\x0f\x63ontrol_command\x18\x05 \x01(\x0b\x32\x16.openxc.ControlCommand\x12\x31\n\x10\x63ommand_response\x18\x06 \x01(\x0b\x32\x17.openxc.CommandResponse\"Z\n\x04Type\x12\x07\n\x03RAW\x10\x01\x12\x0e\n\nTRANSLATED\x10\x02\x12\x0e\n\nDIAGNOSTIC\x10\x03\x12\x13\n\x0f\x43ONTROL_COMMAND\x10\x04\x12\x14\n\x10\x43OMMAND_RESPONSE\x10\x05\";\n\nRawMessage\x12\x0b\n\x03\x62us\x18\x01 \x01(\x05\x12\x12\n\nmessage_id\x18\x02 \x01(\r\x12\x0c\n\x04\x64\x61ta\x18\x03 \x01(\x0c\"\xf4\x01\n\x0e\x43ontrolCommand\x12)\n\x04type\x18\x01 \x01(\x0e\x32\x1b.openxc.ControlCommand.Type\x12\x35\n\x12\x64iagnostic_request\x18\x02 \x01(\x0b\x32\x19.openxc.DiagnosticRequest\x12-\n\x06\x61\x63tion\x18\x03 \x01(\x0e\x32\x1d.openxc.ControlCommand.Action\"2\n\x04Type\x12\x0b\n\x07VERSION\x10\x01\x12\r\n\tDEVICE_ID\x10\x02\x12\x0e\n\nDIAGNOSTIC\x10\x03\"\x1d\n\x06\x41\x63tion\x12\x07\n\x03\x41\x44\x44\x10\x01\x12\n\n\x06\x43\x41NCEL\x10\x02\"]\n\x0f\x43ommandResponse\x12)\n\x04type\x18\x01 \x01(\x0e\x32\x1b.openxc.ControlCommand.Type\x12\x0f\n\x07message\x18\x02 \x01(\t\x12\x0e\n\x06status\x18\x03 \x01(\x08\"\xfd\x01\n\x11\x44iagnosticRequest\x12\x0b\n\x03\x62us\x18\x01 \x01(\x05\x12\x12\n\nmessage_id\x18\x02 \x01(\r\x12\x0c\n\x04mode\x18\x03 \x01(\r\x12\x0b\n\x03pid\x18\x04 \x01(\r\x12\x0f\n\x07payload\x18\x05 \x01(\x0c\x12\x1a\n\x12multiple_responses\x18\x06 \x01(\x08\x12\x11\n\tfrequency\x18\x07 \x01(\x01\x12\x0c\n\x04name\x18\x08 \x01(\t\x12;\n\x0c\x64\x65\x63oded_type\x18\t \x01(\x0e\x32%.openxc.DiagnosticRequest.DecodedType\"!\n\x0b\x44\x65\x63odedType\x12\x08\n\x04NONE\x10\x01\x12\x08\n\x04OBD2\x10\x02\"\xa1\x01\n\x12\x44iagnosticResponse\x12\x0b\n\x03\x62us\x18\x01 \x01(\x05\x12\x12\n\nmessage_id\x18\x02 \x01(\r\x12\x0c\n\x04mode\x18\x03 \x01(\r\x12\x0b\n\x03pid\x18\x04 \x01(\r\x12\x0f\n\x07success\x18\x05 \x01(\x08\x12\x1e\n\x16negative_response_code\x18\x06 \x01(\r\x12\x0f\n\x07payload\x18\x07 \x01(\x0c\x12\r\n\x05value\x18\x08 \x01(\x01\"\xa2\x01\n\x0c\x44ynamicField\x12\'\n\x04type\x18\x01 \x01(\x0e\x32\x19.openxc.DynamicField.Type\x12\x14\n\x0cstring_value\x18\x02 \x01(\t\x12\x15\n\rnumeric_value\x18\x03 \x01(\x01\x12\x15\n\rboolean_value\x18\x04 \x01(\x08\"%\n\x04Type\x12\n\n\x06STRING\x10\x01\x12\x07\n\x03NUM\x10\x02\x12\x08\n\x04\x42OOL\x10\x03\"\xf7\x01\n\x11TranslatedMessage\x12,\n\x04type\x18\x01 \x01(\x0e\x32\x1e.openxc.TranslatedMessage.Type\x12\x0c\n\x04name\x18\x02 \x01(\t\x12#\n\x05value\x18\x03 \x01(\x0b\x32\x14.openxc.DynamicField\x12#\n\x05\x65vent\x18\x04 \x01(\x0b\x32\x14.openxc.DynamicField\"\\\n\x04Type\x12\n\n\x06STRING\x10\x01\x12\x07\n\x03NUM\x10\x02\x12\x08\n\x04\x42OOL\x10\x03\x12\x12\n\x0e\x45VENTED_STRING\x10\x04\x12\x0f\n\x0b\x45VENTED_NUM\x10\x05\x12\x10\n\x0c\x45VENTED_BOOL\x10\x06\x42\x1c\n\ncom.openxcB\x0e\x42inaryMessages')
+  serialized_pb='\n\x0copenxc.proto\x12\x06openxc\"\x94\x03\n\x0eVehicleMessage\x12)\n\x04type\x18\x01 \x01(\x0e\x32\x1b.openxc.VehicleMessage.Type\x12\'\n\x0braw_message\x18\x02 \x01(\x0b\x32\x12.openxc.RawMessage\x12\x35\n\x12translated_message\x18\x03 \x01(\x0b\x32\x19.openxc.TranslatedMessage\x12\x37\n\x13\x64iagnostic_response\x18\x04 \x01(\x0b\x32\x1a.openxc.DiagnosticResponse\x12/\n\x0f\x63ontrol_command\x18\x05 \x01(\x0b\x32\x16.openxc.ControlCommand\x12\x31\n\x10\x63ommand_response\x18\x06 \x01(\x0b\x32\x17.openxc.CommandResponse\"Z\n\x04Type\x12\x07\n\x03RAW\x10\x01\x12\x0e\n\nTRANSLATED\x10\x02\x12\x0e\n\nDIAGNOSTIC\x10\x03\x12\x13\n\x0f\x43ONTROL_COMMAND\x10\x04\x12\x14\n\x10\x43OMMAND_RESPONSE\x10\x05\";\n\nRawMessage\x12\x0b\n\x03\x62us\x18\x01 \x01(\x05\x12\x12\n\nmessage_id\x18\x02 \x01(\r\x12\x0c\n\x04\x64\x61ta\x18\x03 \x01(\x0c\"\x87\x02\n\x0e\x43ontrolCommand\x12)\n\x04type\x18\x01 \x01(\x0e\x32\x1b.openxc.ControlCommand.Type\x12<\n\x12\x64iagnostic_request\x18\x02 \x01(\x0b\x32 .openxc.DiagnosticControlCommand\x12G\n\x18passthrough_mode_request\x18\x03 \x01(\x0b\x32%.openxc.PassthroughModeControlCommand\"C\n\x04Type\x12\x0b\n\x07VERSION\x10\x01\x12\r\n\tDEVICE_ID\x10\x02\x12\x0e\n\nDIAGNOSTIC\x10\x03\x12\x0f\n\x0bPASSTHROUGH\x10\x04\"\x9e\x01\n\x18\x44iagnosticControlCommand\x12*\n\x07request\x18\x01 \x01(\x0b\x32\x19.openxc.DiagnosticRequest\x12\x37\n\x06\x61\x63tion\x18\x02 \x01(\x0e\x32\'.openxc.DiagnosticControlCommand.Action\"\x1d\n\x06\x41\x63tion\x12\x07\n\x03\x41\x44\x44\x10\x01\x12\n\n\x06\x43\x41NCEL\x10\x02\"\xab\x01\n\x1dPassthroughModeControlCommand\x12\x0b\n\x03\x62us\x18\x01 \x01(\x05\x12\x43\n\x04mode\x18\x02 \x01(\x0e\x32\x35.openxc.PassthroughModeControlCommand.PassthroughMode\"8\n\x0fPassthroughMode\x12\x07\n\x03OFF\x10\x01\x12\x0c\n\x08\x46ILTERED\x10\x02\x12\x0e\n\nUNFILTERED\x10\x03\"]\n\x0f\x43ommandResponse\x12)\n\x04type\x18\x01 \x01(\x0e\x32\x1b.openxc.ControlCommand.Type\x12\x0f\n\x07message\x18\x02 \x01(\t\x12\x0e\n\x06status\x18\x03 \x01(\x08\"\xfd\x01\n\x11\x44iagnosticRequest\x12\x0b\n\x03\x62us\x18\x01 \x01(\x05\x12\x12\n\nmessage_id\x18\x02 \x01(\r\x12\x0c\n\x04mode\x18\x03 \x01(\r\x12\x0b\n\x03pid\x18\x04 \x01(\r\x12\x0f\n\x07payload\x18\x05 \x01(\x0c\x12\x1a\n\x12multiple_responses\x18\x06 \x01(\x08\x12\x11\n\tfrequency\x18\x07 \x01(\x01\x12\x0c\n\x04name\x18\x08 \x01(\t\x12;\n\x0c\x64\x65\x63oded_type\x18\t \x01(\x0e\x32%.openxc.DiagnosticRequest.DecodedType\"!\n\x0b\x44\x65\x63odedType\x12\x08\n\x04NONE\x10\x01\x12\x08\n\x04OBD2\x10\x02\"\xa1\x01\n\x12\x44iagnosticResponse\x12\x0b\n\x03\x62us\x18\x01 \x01(\x05\x12\x12\n\nmessage_id\x18\x02 \x01(\r\x12\x0c\n\x04mode\x18\x03 \x01(\r\x12\x0b\n\x03pid\x18\x04 \x01(\r\x12\x0f\n\x07success\x18\x05 \x01(\x08\x12\x1e\n\x16negative_response_code\x18\x06 \x01(\r\x12\x0f\n\x07payload\x18\x07 \x01(\x0c\x12\r\n\x05value\x18\x08 \x01(\x01\"\xa2\x01\n\x0c\x44ynamicField\x12\'\n\x04type\x18\x01 \x01(\x0e\x32\x19.openxc.DynamicField.Type\x12\x14\n\x0cstring_value\x18\x02 \x01(\t\x12\x15\n\rnumeric_value\x18\x03 \x01(\x01\x12\x15\n\rboolean_value\x18\x04 \x01(\x08\"%\n\x04Type\x12\n\n\x06STRING\x10\x01\x12\x07\n\x03NUM\x10\x02\x12\x08\n\x04\x42OOL\x10\x03\"\xf7\x01\n\x11TranslatedMessage\x12,\n\x04type\x18\x01 \x01(\x0e\x32\x1e.openxc.TranslatedMessage.Type\x12\x0c\n\x04name\x18\x02 \x01(\t\x12#\n\x05value\x18\x03 \x01(\x0b\x32\x14.openxc.DynamicField\x12#\n\x05\x65vent\x18\x04 \x01(\x0b\x32\x14.openxc.DynamicField\"\\\n\x04Type\x12\n\n\x06STRING\x10\x01\x12\x07\n\x03NUM\x10\x02\x12\x08\n\x04\x42OOL\x10\x03\x12\x12\n\x0e\x45VENTED_STRING\x10\x04\x12\x0f\n\x0b\x45VENTED_NUM\x10\x05\x12\x10\n\x0c\x45VENTED_BOOL\x10\x06\x42\x1c\n\ncom.openxcB\x0e\x42inaryMessages')
 
 
 
@@ -68,16 +68,20 @@ _CONTROLCOMMAND_TYPE = _descriptor.EnumDescriptor(
       name='DIAGNOSTIC', index=2, number=3,
       options=None,
       type=None),
+    _descriptor.EnumValueDescriptor(
+      name='PASSTHROUGH', index=3, number=4,
+      options=None,
+      type=None),
   ],
   containing_type=None,
   options=None,
-  serialized_start=656,
-  serialized_end=706,
+  serialized_start=689,
+  serialized_end=756,
 )
 
-_CONTROLCOMMAND_ACTION = _descriptor.EnumDescriptor(
+_DIAGNOSTICCONTROLCOMMAND_ACTION = _descriptor.EnumDescriptor(
   name='Action',
-  full_name='openxc.ControlCommand.Action',
+  full_name='openxc.DiagnosticControlCommand.Action',
   filename=None,
   file=DESCRIPTOR,
   values=[
@@ -92,8 +96,33 @@ _CONTROLCOMMAND_ACTION = _descriptor.EnumDescriptor(
   ],
   containing_type=None,
   options=None,
-  serialized_start=708,
-  serialized_end=737,
+  serialized_start=888,
+  serialized_end=917,
+)
+
+_PASSTHROUGHMODECONTROLCOMMAND_PASSTHROUGHMODE = _descriptor.EnumDescriptor(
+  name='PassthroughMode',
+  full_name='openxc.PassthroughModeControlCommand.PassthroughMode',
+  filename=None,
+  file=DESCRIPTOR,
+  values=[
+    _descriptor.EnumValueDescriptor(
+      name='OFF', index=0, number=1,
+      options=None,
+      type=None),
+    _descriptor.EnumValueDescriptor(
+      name='FILTERED', index=1, number=2,
+      options=None,
+      type=None),
+    _descriptor.EnumValueDescriptor(
+      name='UNFILTERED', index=2, number=3,
+      options=None,
+      type=None),
+  ],
+  containing_type=None,
+  options=None,
+  serialized_start=1035,
+  serialized_end=1091,
 )
 
 _DIAGNOSTICREQUEST_DECODEDTYPE = _descriptor.EnumDescriptor(
@@ -113,8 +142,8 @@ _DIAGNOSTICREQUEST_DECODEDTYPE = _descriptor.EnumDescriptor(
   ],
   containing_type=None,
   options=None,
-  serialized_start=1055,
-  serialized_end=1088,
+  serialized_start=1409,
+  serialized_end=1442,
 )
 
 _DYNAMICFIELD_TYPE = _descriptor.EnumDescriptor(
@@ -138,8 +167,8 @@ _DYNAMICFIELD_TYPE = _descriptor.EnumDescriptor(
   ],
   containing_type=None,
   options=None,
-  serialized_start=1380,
-  serialized_end=1417,
+  serialized_start=1734,
+  serialized_end=1771,
 )
 
 _TRANSLATEDMESSAGE_TYPE = _descriptor.EnumDescriptor(
@@ -175,8 +204,8 @@ _TRANSLATEDMESSAGE_TYPE = _descriptor.EnumDescriptor(
   ],
   containing_type=None,
   options=None,
-  serialized_start=1575,
-  serialized_end=1667,
+  serialized_start=1929,
+  serialized_end=2021,
 )
 
 
@@ -308,9 +337,9 @@ _CONTROLCOMMAND = _descriptor.Descriptor(
       is_extension=False, extension_scope=None,
       options=None),
     _descriptor.FieldDescriptor(
-      name='action', full_name='openxc.ControlCommand.action', index=2,
-      number=3, type=14, cpp_type=8, label=1,
-      has_default_value=False, default_value=1,
+      name='passthrough_mode_request', full_name='openxc.ControlCommand.passthrough_mode_request', index=2,
+      number=3, type=11, cpp_type=10, label=1,
+      has_default_value=False, default_value=None,
       message_type=None, enum_type=None, containing_type=None,
       is_extension=False, extension_scope=None,
       options=None),
@@ -320,13 +349,84 @@ _CONTROLCOMMAND = _descriptor.Descriptor(
   nested_types=[],
   enum_types=[
     _CONTROLCOMMAND_TYPE,
-    _CONTROLCOMMAND_ACTION,
   ],
   options=None,
   is_extendable=False,
   extension_ranges=[],
   serialized_start=493,
-  serialized_end=737,
+  serialized_end=756,
+)
+
+
+_DIAGNOSTICCONTROLCOMMAND = _descriptor.Descriptor(
+  name='DiagnosticControlCommand',
+  full_name='openxc.DiagnosticControlCommand',
+  filename=None,
+  file=DESCRIPTOR,
+  containing_type=None,
+  fields=[
+    _descriptor.FieldDescriptor(
+      name='request', full_name='openxc.DiagnosticControlCommand.request', index=0,
+      number=1, type=11, cpp_type=10, label=1,
+      has_default_value=False, default_value=None,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+    _descriptor.FieldDescriptor(
+      name='action', full_name='openxc.DiagnosticControlCommand.action', index=1,
+      number=2, type=14, cpp_type=8, label=1,
+      has_default_value=False, default_value=1,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+  ],
+  extensions=[
+  ],
+  nested_types=[],
+  enum_types=[
+    _DIAGNOSTICCONTROLCOMMAND_ACTION,
+  ],
+  options=None,
+  is_extendable=False,
+  extension_ranges=[],
+  serialized_start=759,
+  serialized_end=917,
+)
+
+
+_PASSTHROUGHMODECONTROLCOMMAND = _descriptor.Descriptor(
+  name='PassthroughModeControlCommand',
+  full_name='openxc.PassthroughModeControlCommand',
+  filename=None,
+  file=DESCRIPTOR,
+  containing_type=None,
+  fields=[
+    _descriptor.FieldDescriptor(
+      name='bus', full_name='openxc.PassthroughModeControlCommand.bus', index=0,
+      number=1, type=5, cpp_type=1, label=1,
+      has_default_value=False, default_value=0,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+    _descriptor.FieldDescriptor(
+      name='mode', full_name='openxc.PassthroughModeControlCommand.mode', index=1,
+      number=2, type=14, cpp_type=8, label=1,
+      has_default_value=False, default_value=1,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+  ],
+  extensions=[
+  ],
+  nested_types=[],
+  enum_types=[
+    _PASSTHROUGHMODECONTROLCOMMAND_PASSTHROUGHMODE,
+  ],
+  options=None,
+  is_extendable=False,
+  extension_ranges=[],
+  serialized_start=920,
+  serialized_end=1091,
 )
 
 
@@ -367,8 +467,8 @@ _COMMANDRESPONSE = _descriptor.Descriptor(
   options=None,
   is_extendable=False,
   extension_ranges=[],
-  serialized_start=739,
-  serialized_end=832,
+  serialized_start=1093,
+  serialized_end=1186,
 )
 
 
@@ -452,8 +552,8 @@ _DIAGNOSTICREQUEST = _descriptor.Descriptor(
   options=None,
   is_extendable=False,
   extension_ranges=[],
-  serialized_start=835,
-  serialized_end=1088,
+  serialized_start=1189,
+  serialized_end=1442,
 )
 
 
@@ -529,8 +629,8 @@ _DIAGNOSTICRESPONSE = _descriptor.Descriptor(
   options=None,
   is_extendable=False,
   extension_ranges=[],
-  serialized_start=1091,
-  serialized_end=1252,
+  serialized_start=1445,
+  serialized_end=1606,
 )
 
 
@@ -579,8 +679,8 @@ _DYNAMICFIELD = _descriptor.Descriptor(
   options=None,
   is_extendable=False,
   extension_ranges=[],
-  serialized_start=1255,
-  serialized_end=1417,
+  serialized_start=1609,
+  serialized_end=1771,
 )
 
 
@@ -629,8 +729,8 @@ _TRANSLATEDMESSAGE = _descriptor.Descriptor(
   options=None,
   is_extendable=False,
   extension_ranges=[],
-  serialized_start=1420,
-  serialized_end=1667,
+  serialized_start=1774,
+  serialized_end=2021,
 )
 
 _VEHICLEMESSAGE.fields_by_name['type'].enum_type = _VEHICLEMESSAGE_TYPE
@@ -641,10 +741,14 @@ _VEHICLEMESSAGE.fields_by_name['control_command'].message_type = _CONTROLCOMMAND
 _VEHICLEMESSAGE.fields_by_name['command_response'].message_type = _COMMANDRESPONSE
 _VEHICLEMESSAGE_TYPE.containing_type = _VEHICLEMESSAGE;
 _CONTROLCOMMAND.fields_by_name['type'].enum_type = _CONTROLCOMMAND_TYPE
-_CONTROLCOMMAND.fields_by_name['diagnostic_request'].message_type = _DIAGNOSTICREQUEST
-_CONTROLCOMMAND.fields_by_name['action'].enum_type = _CONTROLCOMMAND_ACTION
+_CONTROLCOMMAND.fields_by_name['diagnostic_request'].message_type = _DIAGNOSTICCONTROLCOMMAND
+_CONTROLCOMMAND.fields_by_name['passthrough_mode_request'].message_type = _PASSTHROUGHMODECONTROLCOMMAND
 _CONTROLCOMMAND_TYPE.containing_type = _CONTROLCOMMAND;
-_CONTROLCOMMAND_ACTION.containing_type = _CONTROLCOMMAND;
+_DIAGNOSTICCONTROLCOMMAND.fields_by_name['request'].message_type = _DIAGNOSTICREQUEST
+_DIAGNOSTICCONTROLCOMMAND.fields_by_name['action'].enum_type = _DIAGNOSTICCONTROLCOMMAND_ACTION
+_DIAGNOSTICCONTROLCOMMAND_ACTION.containing_type = _DIAGNOSTICCONTROLCOMMAND;
+_PASSTHROUGHMODECONTROLCOMMAND.fields_by_name['mode'].enum_type = _PASSTHROUGHMODECONTROLCOMMAND_PASSTHROUGHMODE
+_PASSTHROUGHMODECONTROLCOMMAND_PASSTHROUGHMODE.containing_type = _PASSTHROUGHMODECONTROLCOMMAND;
 _COMMANDRESPONSE.fields_by_name['type'].enum_type = _CONTROLCOMMAND_TYPE
 _DIAGNOSTICREQUEST.fields_by_name['decoded_type'].enum_type = _DIAGNOSTICREQUEST_DECODEDTYPE
 _DIAGNOSTICREQUEST_DECODEDTYPE.containing_type = _DIAGNOSTICREQUEST;
@@ -657,6 +761,8 @@ _TRANSLATEDMESSAGE_TYPE.containing_type = _TRANSLATEDMESSAGE;
 DESCRIPTOR.message_types_by_name['VehicleMessage'] = _VEHICLEMESSAGE
 DESCRIPTOR.message_types_by_name['RawMessage'] = _RAWMESSAGE
 DESCRIPTOR.message_types_by_name['ControlCommand'] = _CONTROLCOMMAND
+DESCRIPTOR.message_types_by_name['DiagnosticControlCommand'] = _DIAGNOSTICCONTROLCOMMAND
+DESCRIPTOR.message_types_by_name['PassthroughModeControlCommand'] = _PASSTHROUGHMODECONTROLCOMMAND
 DESCRIPTOR.message_types_by_name['CommandResponse'] = _COMMANDRESPONSE
 DESCRIPTOR.message_types_by_name['DiagnosticRequest'] = _DIAGNOSTICREQUEST
 DESCRIPTOR.message_types_by_name['DiagnosticResponse'] = _DIAGNOSTICRESPONSE
@@ -681,6 +787,18 @@ class ControlCommand(_message.Message):
 
   # @@protoc_insertion_point(class_scope:openxc.ControlCommand)
 
+class DiagnosticControlCommand(_message.Message):
+  __metaclass__ = _reflection.GeneratedProtocolMessageType
+  DESCRIPTOR = _DIAGNOSTICCONTROLCOMMAND
+
+  # @@protoc_insertion_point(class_scope:openxc.DiagnosticControlCommand)
+
+class PassthroughModeControlCommand(_message.Message):
+  __metaclass__ = _reflection.GeneratedProtocolMessageType
+  DESCRIPTOR = _PASSTHROUGHMODECONTROLCOMMAND
+
+  # @@protoc_insertion_point(class_scope:openxc.PassthroughModeControlCommand)
+
 class CommandResponse(_message.Message):
   __metaclass__ = _reflection.GeneratedProtocolMessageType
   DESCRIPTOR = _COMMANDRESPONSE
diff --git a/openxc.proto b/openxc.proto
index 937fe186..fd61b6c8 100644
--- a/openxc.proto
+++ b/openxc.proto
@@ -22,12 +22,34 @@ message RawMessage {
 }
 
 message ControlCommand {
-    enum Type { VERSION = 1; DEVICE_ID = 2; DIAGNOSTIC = 3; }
-    enum Action { ADD = 1; CANCEL = 2; }
+    enum Type {
+        VERSION = 1;
+        DEVICE_ID = 2;
+        DIAGNOSTIC = 3;
+        PASSTHROUGH = 4;
+    }
 
     optional Type type = 1;
-    optional DiagnosticRequest diagnostic_request = 2;
-    optional Action action = 3;
+    optional DiagnosticControlCommand diagnostic_request = 2;
+    optional PassthroughModeControlCommand passthrough_mode_request = 3;
+}
+
+message DiagnosticControlCommand {
+    enum Action { ADD = 1; CANCEL = 2; }
+
+    optional DiagnosticRequest request = 1;
+    optional Action action = 2;
+}
+
+message PassthroughModeControlCommand {
+    enum PassthroughMode {
+        OFF = 1;
+        FILTERED = 2;
+        UNFILTERED = 3;
+    }
+
+    optional int32 bus = 1;
+    optional PassthroughMode mode = 2;
 }
 
 message CommandResponse {