diff --git a/firmware/command_config.h b/firmware/command_config.h
index eba75b8..b502cbe 100755
--- a/firmware/command_config.h
+++ b/firmware/command_config.h
@@ -25,6 +25,7 @@
 void cc_setBaudrate(void);
 void cc_getBaudrate(void);
 void cc_setMuxLine(void);
+void cc_getMuxLine(void);
 void cc_startBootloader(void);
 
 /*****************************************************************************/
@@ -32,6 +33,7 @@ void cc_startBootloader(void);
 #define CC_CMD_SET_BAUDRATE   0x0A
 #define CC_CMD_GET_BAUDRATE   0x14
 #define CC_CMD_SET_MUX_LINE   0x1E
+#define CC_CMD_GET_MUX_LINE   0x28
 #define CC_CMD_START_BTLDR    0x32
 
 /*****************************************************************************/
@@ -39,6 +41,7 @@ void cc_startBootloader(void);
 #define CC_CMD_SET_BAUDRATE_FUNC   &cc_setBaudrate
 #define CC_CMD_GET_BAUDRATE_FUNC   &cc_getBaudrate
 #define CC_CMD_SET_MUX_LINE_FUNC   &cc_setMuxLine
+#define CC_CMD_GET_MUX_LINE_FUNC   &cc_getMuxLine
 #define CC_CMD_START_BTLDR_FUNC    &cc_startBootloader
 
 /*****************************************************************************/
@@ -46,6 +49,7 @@ void cc_startBootloader(void);
 #define CC_CMD_SET_BAUDRATE_DATA_TO_READ  4 // set baudrate
 #define CC_CMD_GET_BAUDRATE_DATA_TO_READ  0 // get baudrate
 #define CC_CMD_SET_MUX_LINE_DATA_TO_READ  1 // set mux line
+#define CC_CMD_GET_MUX_LINE_DATA_TO_READ  0 // get mux line
 #define CC_CMD_START_BTLDR_DATA_TO_READ   0 // start bootloader
 
 /*****************************************************************************/
@@ -58,6 +62,7 @@ uint8_t cc_commands[] = {
     CC_CMD_SET_BAUDRATE,
     CC_CMD_GET_BAUDRATE,
     CC_CMD_SET_MUX_LINE,
+    CC_CMD_GET_MUX_LINE,
     CC_CMD_START_BTLDR,
   };
 
@@ -65,6 +70,7 @@ void (*cc_cmd_functions[])() = {
     CC_CMD_SET_BAUDRATE_FUNC,
     CC_CMD_GET_BAUDRATE_FUNC,
     CC_CMD_SET_MUX_LINE_FUNC,
+    CC_CMD_GET_MUX_LINE_FUNC,
     CC_CMD_START_BTLDR_FUNC,
   };
 
@@ -72,6 +78,7 @@ uint8_t cc_cmd_data_to_read[] = {
      CC_CMD_SET_BAUDRATE_DATA_TO_READ,
      CC_CMD_GET_BAUDRATE_DATA_TO_READ,
      CC_CMD_SET_MUX_LINE_DATA_TO_READ,
+     CC_CMD_GET_MUX_LINE_DATA_TO_READ,
      CC_CMD_START_BTLDR_DATA_TO_READ,
   };
 
diff --git a/firmware/command_functions.c b/firmware/command_functions.c
index 034a929..b4e5400 100755
--- a/firmware/command_functions.c
+++ b/firmware/command_functions.c
@@ -60,6 +60,19 @@ void cc_startBootloader()
 
 /*****************************************************************************/
 
+void cc_getMuxLine()
+{
+  uint8_t mux_line  = ((PORTB & 0x40) >> 6);
+          mux_line += ((PORTB & 0x20) >> 4);
+          mux_line += ((PORTB & 0x10) >> 2);
+
+  char* sBody = "      ";
+  sprintf(sBody, "%c%c%c%c%c%c", MSG_SOM1, MSG_SOM2, MSG_TYPE_MUXLINE, mux_line, MSG_EOM1, MSG_EOM2);
+  USB_serialStreamWriteC(sBody, strlen(sBody));
+}
+
+/*****************************************************************************/
+
 void cc_setMuxLine()
 {
   switch(cc_read_data[0])
diff --git a/firmware/globals.h b/firmware/globals.h
index 5bc9a3f..18e64a9 100755
--- a/firmware/globals.h
+++ b/firmware/globals.h
@@ -10,6 +10,7 @@
     #define MSG_TYPE_ANSWER_OK  0x01
     #define MSG_TYPE_ANSWER_NOK 0x02
     #define MSG_TYPE_BAUDRATE   0x03
+    #define MSG_TYPE_MUXLINE    0x04
 
 /*****************************************************************************/