diff --git a/right/src/usb_protocol_handler.c b/right/src/usb_protocol_handler.c
index 8099224..c0a1a92 100644
--- a/right/src/usb_protocol_handler.c
+++ b/right/src/usb_protocol_handler.c
@@ -1,26 +1,60 @@
 #include "usb_protocol_handler.h"
 #include "test_led.h"
 
+void GetProtocolVersion();
+void JumpToBootloader();
+void GetSetTestLed();
+void WriteLedDriver();
+void ReadLedDriver();
+
 void UsbProtocolHandler()
 {
     uint8_t command = GenericHidInBuffer[0];
-    uint8_t arg = GenericHidInBuffer[1];
-
     switch (command) {
+        case USB_COMMAND_GET_PROTOCOL_VERSION:
+            GetProtocolVersion();
+            break;
         case USB_COMMAND_JUMP_TO_BOOTLOADER:
+            JumpToBootloader();
             break;
         case USB_COMMAND_TEST_LED:
-            switch (arg) {
-                case 0:
-                    TEST_RED_ON();
-                    break;
-                case 1:
-                    TEST_RED_OFF();
-                    break;
-            }
-        case USB_COMMAND_LED_DRIVER:
+            GetSetTestLed();
+            break;
+        case USB_COMMAND_WRITE_LED_DRIVER:
+            WriteLedDriver();
+            break;
+        case USB_COMMAND_READ_LED_DRIVER:
+            ReadLedDriver();
             break;
         default:
             break;
     }
 }
+
+void GetProtocolVersion() {
+    GenericHidOutBuffer[1] = 1;
+}
+
+void JumpToBootloader() {
+}
+
+void GetSetTestLed()
+{
+    uint8_t arg = GenericHidInBuffer[1];
+    switch (arg) {
+        case 0:
+            TEST_RED_ON();
+            break;
+        case 1:
+            TEST_RED_OFF();
+            break;
+    }
+}
+
+void WriteLedDriver()
+{
+}
+
+void ReadLedDriver()
+{
+}
diff --git a/right/src/usb_protocol_handler.h b/right/src/usb_protocol_handler.h
index 4aa292e..7876ac1 100644
--- a/right/src/usb_protocol_handler.h
+++ b/right/src/usb_protocol_handler.h
@@ -7,9 +7,11 @@
 
 // Macros:
 
-    #define USB_COMMAND_JUMP_TO_BOOTLOADER 0
-    #define USB_COMMAND_TEST_LED           1
-    #define USB_COMMAND_LED_DRIVER         2
+    #define USB_COMMAND_GET_PROTOCOL_VERSION 0
+    #define USB_COMMAND_JUMP_TO_BOOTLOADER   1
+    #define USB_COMMAND_TEST_LED             2
+    #define USB_COMMAND_WRITE_LED_DRIVER     3
+    #define USB_COMMAND_READ_LED_DRIVER      4
 
 // Functions: