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diff --git a/firmware/usb_bulk_structs.c b/firmware/usb_bulk_structs.c
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+//*****************************************************************************

+//

+// usb_bulk_structs.c - Data structures defining this bulk USB device.

+//

+// Copyright (c) 2012 Texas Instruments Incorporated.  All rights reserved.

+// Software License Agreement

+// 

+// Texas Instruments (TI) is supplying this software for use solely and

+// exclusively on TI's microcontroller products. The software is owned by

+// TI and/or its suppliers, and is protected under applicable copyright

+// laws. You may not combine this software with "viral" open-source

+// software in order to form a larger program.

+// 

+// THIS SOFTWARE IS PROVIDED "AS IS" AND WITH ALL FAULTS.

+// NO WARRANTIES, WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING, BUT

+// NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

+// A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE. TI SHALL NOT, UNDER ANY

+// CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR CONSEQUENTIAL

+// DAMAGES, FOR ANY REASON WHATSOEVER.

+// 

+// This is part of revision 9453 of the EK-LM4F120XL Firmware Package.

+//

+//*****************************************************************************

+

+#include "inc/hw_types.h"

+#include "driverlib/usb.h"

+#include "usblib/usblib.h"

+#include "usblib/usb-ids.h"

+#include "usblib/device/usbdevice.h"

+#include "usblib/device/usbdbulk.h"

+#include "usb_bulk_structs.h"

+

+//*****************************************************************************

+//

+// The languages supported by this device.

+//

+//*****************************************************************************

+const unsigned char g_pLangDescriptor[] =

+{

+    4,

+    USB_DTYPE_STRING,

+    USBShort(USB_LANG_EN_US)

+};

+

+//*****************************************************************************

+//

+// The manufacturer string.

+//

+//*****************************************************************************

+const unsigned char g_pManufacturerString[] =

+{

+    (12 + 1) * 2,

+    USB_DTYPE_STRING,

+    'G', 0, 'o', 0, 'l', 0, 'd', 0, ' ', 0, '&', 0, ' ', 0, 'A', 0, 'p', 0,

+    'p', 0, 'l', 0, 'e', 0

+};

+

+//*****************************************************************************

+//

+// The product string.

+//

+//*****************************************************************************

+const unsigned char g_pProductString[] =

+{

+    (10 + 1) * 2,

+    USB_DTYPE_STRING,

+    'M', 0, 'a', 0, 't', 0, 'e', 0, ' ', 0, 'L', 0, 'i', 0, 'g', 0, 'h', 0,

+    't', 0

+};

+

+//*****************************************************************************

+//

+// The serial number string.

+//

+//*****************************************************************************

+const unsigned char g_pSerialNumberString[] =

+{

+    (8 + 1) * 2,

+    USB_DTYPE_STRING,

+    '0', 0, '0', 0, '0', 0, '0', 0, '0', 0, '0', 0, '3', 0, '2', 0

+};

+

+//*****************************************************************************

+//

+// The data interface description string.

+//

+//*****************************************************************************

+const unsigned char g_pDataInterfaceString[] =

+{

+    (19 + 1) * 2,

+    USB_DTYPE_STRING,

+    'B', 0, 'u', 0, 'l', 0, 'k', 0, ' ', 0, 'D', 0, 'a', 0, 't', 0,

+    'a', 0, ' ', 0, 'I', 0, 'n', 0, 't', 0, 'e', 0, 'r', 0, 'f', 0,

+    'a', 0, 'c', 0, 'e', 0

+};

+

+//*****************************************************************************

+//

+// The configuration description string.

+//

+//*****************************************************************************

+const unsigned char g_pConfigString[] =

+{

+    (23 + 1) * 2,

+    USB_DTYPE_STRING,

+    'B', 0, 'u', 0, 'l', 0, 'k', 0, ' ', 0, 'D', 0, 'a', 0, 't', 0,

+    'a', 0, ' ', 0, 'C', 0, 'o', 0, 'n', 0, 'f', 0, 'i', 0, 'g', 0,

+    'u', 0, 'r', 0, 'a', 0, 't', 0, 'i', 0, 'o', 0, 'n', 0

+};

+

+//*****************************************************************************

+//

+// The descriptor string table.

+//

+//*****************************************************************************

+const unsigned char * const g_pStringDescriptors[] =

+{

+    g_pLangDescriptor,

+    g_pManufacturerString,

+    g_pProductString,

+    g_pSerialNumberString,

+    g_pDataInterfaceString,

+    g_pConfigString

+};

+

+#define NUM_STRING_DESCRIPTORS (sizeof(g_pStringDescriptors) /                \

+                                sizeof(unsigned char *))

+

+//*****************************************************************************

+//

+// The bulk device initialization and customization structures. In this case,

+// we are using USBBuffers between the bulk device class driver and the

+// application code. The function pointers and callback data values are set

+// to insert a buffer in each of the data channels, transmit and receive.

+//

+// With the buffer in place, the bulk channel callback is set to the relevant

+// channel function and the callback data is set to point to the channel

+// instance data. The buffer, in turn, has its callback set to the application

+// function and the callback data set to our bulk instance structure.

+//

+//*****************************************************************************

+tBulkInstance g_sBulkInstance;

+

+extern const tUSBBuffer g_sRxBuffer;

+

+const tUSBDBulkDevice g_sBulkDevice =

+{

+    USB_VID_STELLARIS,

+    USB_PID_BULK,

+    500,

+    USB_CONF_ATTR_SELF_PWR,

+    USBBufferEventCallback,

+    (void *)&g_sRxBuffer,

+    USBBufferEventCallback,

+    (void *)0,

+    g_pStringDescriptors,

+    NUM_STRING_DESCRIPTORS,

+    &g_sBulkInstance

+};

+

+//*****************************************************************************

+//

+// Receive buffer (from the USB perspective).

+//

+//*****************************************************************************

+unsigned char g_pucUSBRxBuffer[BULK_BUFFER_SIZE];

+unsigned char g_pucRxBufferWorkspace[USB_BUFFER_WORKSPACE_SIZE];

+const tUSBBuffer g_sRxBuffer =

+{

+    false,                           // This is a receive buffer.

+    RxHandler,                       // pfnCallback

+    (void *)&g_sBulkDevice,          // Callback data is our device pointer.

+    USBDBulkPacketRead,              // pfnTransfer

+    USBDBulkRxPacketAvailable,       // pfnAvailable

+    (void *)&g_sBulkDevice,          // pvHandle

+    g_pucUSBRxBuffer,                // pcBuffer

+    BULK_BUFFER_SIZE,                // ulBufferSize

+    g_pucRxBufferWorkspace           // pvWorkspace

+};