diff --git a/hw/bsp/samg55xplained/samg55xplained.c b/hw/bsp/samg55xplained/samg55xplained.c
index b66b906a..67e7f925 100644
--- a/hw/bsp/samg55xplained/samg55xplained.c
+++ b/hw/bsp/samg55xplained/samg55xplained.c
@@ -75,7 +75,7 @@ void board_init(void)
 	_pmc_enable_periph_clock(ID_FLEXCOM7);
 	gpio_set_pin_function(UART_RX_PIN, MUX_PA27B_FLEXCOM7_RXD);
 	gpio_set_pin_function(UART_TX_PIN, MUX_PA28B_FLEXCOM7_TXD);
-//	_usart_sync_init(&_edbg_com, FLEXCOM7, _edbg_com_buf, sizeof(_edbg_com_buf), _usart_get_usart_async());
+
 	_usart_sync_init(&_edbg_com, FLEXCOM7);
 	_usart_sync_set_baud_rate(&_edbg_com, CFG_BOARD_UART_BAUDRATE);
 	_usart_sync_set_mode(&_edbg_com, USART_MODE_ASYNCHRONOUS);
@@ -99,6 +99,16 @@ void board_init(void)
 	hri_matrix_write_CCFG_USBMR_reg(MATRIX, CCFG_USBMR_USBMODE);
 }
 
+//--------------------------------------------------------------------+
+// USB Interrupt Handler
+//--------------------------------------------------------------------+
+void UDP_Handler(void)
+{
+  #if CFG_TUSB_RHPORT0_MODE & OPT_MODE_DEVICE
+    tud_isr(0);
+  #endif
+}
+
 //--------------------------------------------------------------------+
 // Board porting API
 //--------------------------------------------------------------------+
diff --git a/src/portable/microchip/samg/dcd_samg.c b/src/portable/microchip/samg/dcd_samg.c
index d3028e60..9b9ebad7 100644
--- a/src/portable/microchip/samg/dcd_samg.c
+++ b/src/portable/microchip/samg/dcd_samg.c
@@ -28,8 +28,8 @@
 
 #if CFG_TUSB_MCU == OPT_MCU_SAMG
 
-#include "device/dcd.h"
 #include "sam.h"
+#include "device/dcd.h"
 
 //--------------------------------------------------------------------+
 // MACRO TYPEDEF CONSTANT ENUM DECLARATION
@@ -40,10 +40,22 @@
 /* Device API
  *------------------------------------------------------------------*/
 
+// Set up endpoint 0, clear all other endpoints
+//static void bus_reset(void)
+//{
+//
+//}
+
 // Initialize controller to device mode
 void dcd_init (uint8_t rhport)
 {
   (void) rhport;
+
+
+
+
+  // Pull-up & Transceiver enable
+  UDP->UDP_TXVC = UDP_TXVC_PUON;
 }
 
 // Enable device interrupt
@@ -116,4 +128,14 @@ void dcd_edpt_clear_stall (uint8_t rhport, uint8_t ep_addr)
   (void) ep_addr;
 }
 
+//--------------------------------------------------------------------+
+// ISR
+//--------------------------------------------------------------------+
+void dcd_isr(uint8_t rhport)
+{
+  (void) rhport;
+
+
+}
+
 #endif