Added ability to write protect Mass Storage disk write operations from the host OS.

[pub/USBasp.git] / LUFA / Drivers / USB / Class / Host / Printer.c

diff --git a/LUFA/Drivers/USB/Class/Host/Printer.c b/LUFA/Drivers/USB/Class/Host/Printer.c
index 773b9b4..f08ee5b 100644 (file)
--- a/LUFA/Drivers/USB/Class/Host/Printer.c
+++ b/LUFA/Drivers/USB/Class/Host/Printer.c
@@ -1,21 +1,21 @@
 /*
              LUFA Library
      Copyright (C) Dean Camera, 2010.
 /*
              LUFA Library
      Copyright (C) Dean Camera, 2010.

-              
+

   dean [at] fourwalledcubicle [dot] com
   dean [at] fourwalledcubicle [dot] com

-      www.fourwalledcubicle.com
+           www.lufa-lib.org

 */
 
 /*
   Copyright 2010  Dean Camera (dean [at] fourwalledcubicle [dot] com)
 
 */
 
 /*
   Copyright 2010  Dean Camera (dean [at] fourwalledcubicle [dot] com)
 

-  Permission to use, copy, modify, distribute, and sell this 
+  Permission to use, copy, modify, distribute, and sell this

   software and its documentation for any purpose is hereby granted
   software and its documentation for any purpose is hereby granted

-  without fee, provided that the above copyright notice appear in 
+  without fee, provided that the above copyright notice appear in

   all copies and that both that the copyright notice and this
   all copies and that both that the copyright notice and this

-  permission notice and warranty disclaimer appear in supporting 
-  documentation, and that the name of the author not be used in 
-  advertising or publicity pertaining to distribution of the 
+  permission notice and warranty disclaimer appear in supporting
+  documentation, and that the name of the author not be used in
+  advertising or publicity pertaining to distribution of the

   software without specific, written prior permission.
 
   The author disclaim all warranties with regard to this
   software without specific, written prior permission.
 
   The author disclaim all warranties with regard to this


@@ -32,13 +32,13 @@
 #include "../../HighLevel/USBMode.h"
 #if defined(USB_CAN_BE_HOST)
 
 #include "../../HighLevel/USBMode.h"
 #if defined(USB_CAN_BE_HOST)
 

-#define  __INCLUDE_FROM_PRINTER_CLASS_HOST_C

 #define  __INCLUDE_FROM_PRINTER_DRIVER
 #define  __INCLUDE_FROM_PRINTER_DRIVER

+#define  __INCLUDE_FROM_PRINTER_HOST_C

 #include "Printer.h"
 
 uint8_t PRNT_Host_ConfigurePipes(USB_ClassInfo_PRNT_Host_t* const PRNTInterfaceInfo,
                                  uint16_t ConfigDescriptorSize,
 #include "Printer.h"
 
 uint8_t PRNT_Host_ConfigurePipes(USB_ClassInfo_PRNT_Host_t* const PRNTInterfaceInfo,
                                  uint16_t ConfigDescriptorSize,

-                                                            void* DeviceConfigDescriptor)
+                                                            void* ConfigDescriptorData)

 {
        USB_Descriptor_Endpoint_t*  DataINEndpoint   = NULL;
        USB_Descriptor_Endpoint_t*  DataOUTEndpoint  = NULL;
 {
        USB_Descriptor_Endpoint_t*  DataINEndpoint   = NULL;
        USB_Descriptor_Endpoint_t*  DataOUTEndpoint  = NULL;


@@ -46,54 +46,54 @@ uint8_t PRNT_Host_ConfigurePipes(USB_ClassInfo_PRNT_Host_t* const PRNTInterfaceI
 
        memset(&PRNTInterfaceInfo->State, 0x00, sizeof(PRNTInterfaceInfo->State));
 
 
        memset(&PRNTInterfaceInfo->State, 0x00, sizeof(PRNTInterfaceInfo->State));
 

-       if (DESCRIPTOR_TYPE(DeviceConfigDescriptor) != DTYPE_Configuration)
+       if (DESCRIPTOR_TYPE(ConfigDescriptorData) != DTYPE_Configuration)

          return PRNT_ENUMERROR_InvalidConfigDescriptor;
          return PRNT_ENUMERROR_InvalidConfigDescriptor;

-               
+

        while (!(DataINEndpoint) || !(DataOUTEndpoint))
        {
                if (!(PrinterInterface) ||
        while (!(DataINEndpoint) || !(DataOUTEndpoint))
        {
                if (!(PrinterInterface) ||

-                   USB_GetNextDescriptorComp(&ConfigDescriptorSize, &DeviceConfigDescriptor,
+                   USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,

                                              DCOMP_PRNT_Host_NextPRNTInterfaceEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
                {
                                              DCOMP_PRNT_Host_NextPRNTInterfaceEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
                {

-                       if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &DeviceConfigDescriptor,
-                                                                                 DCOMP_PRNT_Host_NextPRNTInterface) != DESCRIPTOR_SEARCH_COMP_Found)
+                       if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
+                                                     DCOMP_PRNT_Host_NextPRNTInterface) != DESCRIPTOR_SEARCH_COMP_Found)

                        {
                                return PRNT_ENUMERROR_NoCompatibleInterfaceFound;
                        }
                        {
                                return PRNT_ENUMERROR_NoCompatibleInterfaceFound;
                        }

-                       
-                       PrinterInterface = DESCRIPTOR_PCAST(DeviceConfigDescriptor, USB_Descriptor_Interface_t);        
+
+                       PrinterInterface = DESCRIPTOR_PCAST(ConfigDescriptorData, USB_Descriptor_Interface_t);

 
                        DataINEndpoint  = NULL;
                        DataOUTEndpoint = NULL;
 
                        continue;
                }
 
                        DataINEndpoint  = NULL;
                        DataOUTEndpoint = NULL;
 
                        continue;
                }

-               
-               USB_Descriptor_Endpoint_t* EndpointData = DESCRIPTOR_PCAST(DeviceConfigDescriptor, USB_Descriptor_Endpoint_t);
+
+               USB_Descriptor_Endpoint_t* EndpointData = DESCRIPTOR_PCAST(ConfigDescriptorData, USB_Descriptor_Endpoint_t);

 
                if (EndpointData->EndpointAddress & ENDPOINT_DESCRIPTOR_DIR_IN)
                  DataINEndpoint  = EndpointData;
                else
                  DataOUTEndpoint = EndpointData;
        }
 
                if (EndpointData->EndpointAddress & ENDPOINT_DESCRIPTOR_DIR_IN)
                  DataINEndpoint  = EndpointData;
                else
                  DataOUTEndpoint = EndpointData;
        }

-       
+

        for (uint8_t PipeNum = 1; PipeNum < PIPE_TOTAL_PIPES; PipeNum++)
        {
                if (PipeNum == PRNTInterfaceInfo->Config.DataINPipeNumber)
                {
                        Pipe_ConfigurePipe(PipeNum, EP_TYPE_BULK, PIPE_TOKEN_IN,
        for (uint8_t PipeNum = 1; PipeNum < PIPE_TOTAL_PIPES; PipeNum++)
        {
                if (PipeNum == PRNTInterfaceInfo->Config.DataINPipeNumber)
                {
                        Pipe_ConfigurePipe(PipeNum, EP_TYPE_BULK, PIPE_TOKEN_IN,

-                                                          DataINEndpoint->EndpointAddress, DataINEndpoint->EndpointSize,
-                                                          PRNTInterfaceInfo->Config.DataINPipeDoubleBank ? PIPE_BANK_DOUBLE : PIPE_BANK_SINGLE);
-                       
-                       PRNTInterfaceInfo->State.DataINPipeSize = DataINEndpoint->EndpointSize;                 
+                                          DataINEndpoint->EndpointAddress, DataINEndpoint->EndpointSize,
+                                          PRNTInterfaceInfo->Config.DataINPipeDoubleBank ? PIPE_BANK_DOUBLE : PIPE_BANK_SINGLE);
+
+                       PRNTInterfaceInfo->State.DataINPipeSize = DataINEndpoint->EndpointSize;

                }
                else if (PipeNum == PRNTInterfaceInfo->Config.DataOUTPipeNumber)
                {
                        Pipe_ConfigurePipe(PipeNum, EP_TYPE_BULK, PIPE_TOKEN_OUT,
                }
                else if (PipeNum == PRNTInterfaceInfo->Config.DataOUTPipeNumber)
                {
                        Pipe_ConfigurePipe(PipeNum, EP_TYPE_BULK, PIPE_TOKEN_OUT,

-                                                          DataOUTEndpoint->EndpointAddress, DataOUTEndpoint->EndpointSize,
-                                                          PRNTInterfaceInfo->Config.DataOUTPipeDoubleBank ? PIPE_BANK_DOUBLE : PIPE_BANK_SINGLE);
-                       
-                       PRNTInterfaceInfo->State.DataOUTPipeSize = DataOUTEndpoint->EndpointSize;                       
+                                          DataOUTEndpoint->EndpointAddress, DataOUTEndpoint->EndpointSize,
+                                          PRNTInterfaceInfo->Config.DataOUTPipeDoubleBank ? PIPE_BANK_DOUBLE : PIPE_BANK_SINGLE);
+
+                       PRNTInterfaceInfo->State.DataOUTPipeSize = DataOUTEndpoint->EndpointSize;

                }
        }
 
                }
        }
 


@@ -106,30 +106,37 @@ uint8_t PRNT_Host_ConfigurePipes(USB_ClassInfo_PRNT_Host_t* const PRNTInterfaceI
 
 static uint8_t DCOMP_PRNT_Host_NextPRNTInterface(void* CurrentDescriptor)
 {
 
 static uint8_t DCOMP_PRNT_Host_NextPRNTInterface(void* CurrentDescriptor)
 {

-       if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Interface)
+       USB_Descriptor_Header_t* Header = DESCRIPTOR_PCAST(CurrentDescriptor, USB_Descriptor_Header_t);
+
+       if (Header->Type == DTYPE_Interface)

        {
        {

-               if ((DESCRIPTOR_CAST(CurrentDescriptor, USB_Descriptor_Interface_t).Class    == PRINTER_CLASS)    &&
-                   (DESCRIPTOR_CAST(CurrentDescriptor, USB_Descriptor_Interface_t).SubClass == PRINTER_SUBCLASS) &&
-                       (DESCRIPTOR_CAST(CurrentDescriptor, USB_Descriptor_Interface_t).Protocol == PRINTER_PROTOCOL))
+               USB_Descriptor_Interface_t* Interface = DESCRIPTOR_PCAST(CurrentDescriptor, USB_Descriptor_Interface_t);
+
+               if ((Interface->Class    == PRNT_CSCP_PrinterClass)    &&
+                   (Interface->SubClass == PRNT_CSCP_PrinterSubclass) &&
+                   (Interface->Protocol == PRNT_CSCP_BidirectionalProtocol))

                {
                        return DESCRIPTOR_SEARCH_Found;
                }
        }
                {
                        return DESCRIPTOR_SEARCH_Found;
                }
        }

-       
+

        return DESCRIPTOR_SEARCH_NotFound;
 }
 
 static uint8_t DCOMP_PRNT_Host_NextPRNTInterfaceEndpoint(void* CurrentDescriptor)
 {
        return DESCRIPTOR_SEARCH_NotFound;
 }
 
 static uint8_t DCOMP_PRNT_Host_NextPRNTInterfaceEndpoint(void* CurrentDescriptor)
 {

-       if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Endpoint)
+       USB_Descriptor_Header_t* Header = DESCRIPTOR_PCAST(CurrentDescriptor, USB_Descriptor_Header_t);
+
+       if (Header->Type == DTYPE_Endpoint)

        {
        {

-               uint8_t EndpointType = (DESCRIPTOR_CAST(CurrentDescriptor,
-                                                       USB_Descriptor_Endpoint_t).Attributes & EP_TYPE_MASK);
+               USB_Descriptor_Endpoint_t* Endpoint = DESCRIPTOR_PCAST(CurrentDescriptor, USB_Descriptor_Endpoint_t);
+
+               uint8_t EndpointType = (Endpoint->Attributes & EP_TYPE_MASK);

 
                if (EndpointType == EP_TYPE_BULK)
                  return DESCRIPTOR_SEARCH_Found;
        }
 
                if (EndpointType == EP_TYPE_BULK)
                  return DESCRIPTOR_SEARCH_Found;
        }

-       else if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Interface)
+       else if (Header->Type == DTYPE_Interface)

        {
                return DESCRIPTOR_SEARCH_Fail;
        }
        {
                return DESCRIPTOR_SEARCH_Fail;
        }


@@ -139,7 +146,12 @@ static uint8_t DCOMP_PRNT_Host_NextPRNTInterfaceEndpoint(void* CurrentDescriptor
 
 void PRNT_Host_USBTask(USB_ClassInfo_PRNT_Host_t* const PRNTInterfaceInfo)
 {
 
 void PRNT_Host_USBTask(USB_ClassInfo_PRNT_Host_t* const PRNTInterfaceInfo)
 {

+       if ((USB_HostState != HOST_STATE_Configured) || !(PRNTInterfaceInfo->State.IsActive))
+         return;
+
+       #if !defined(NO_CLASS_DRIVER_AUTOFLUSH)

        PRNT_Host_Flush(PRNTInterfaceInfo);
        PRNT_Host_Flush(PRNTInterfaceInfo);

+       #endif

 }
 
 uint8_t PRNT_Host_SetBidirectionalMode(USB_ClassInfo_PRNT_Host_t* const PRNTInterfaceInfo)
 }
 
 uint8_t PRNT_Host_SetBidirectionalMode(USB_ClassInfo_PRNT_Host_t* const PRNTInterfaceInfo)


@@ -147,7 +159,7 @@ uint8_t PRNT_Host_SetBidirectionalMode(USB_ClassInfo_PRNT_Host_t* const PRNTInte
        if (PRNTInterfaceInfo->State.AlternateSetting)
        {
                uint8_t ErrorCode;
        if (PRNTInterfaceInfo->State.AlternateSetting)
        {
                uint8_t ErrorCode;

-       
+

                USB_ControlRequest = (USB_Request_Header_t)
                        {
                                .bmRequestType = (REQDIR_HOSTTODEVICE | REQTYPE_STANDARD | REQREC_INTERFACE),
                USB_ControlRequest = (USB_Request_Header_t)
                        {
                                .bmRequestType = (REQDIR_HOSTTODEVICE | REQTYPE_STANDARD | REQREC_INTERFACE),


@@ -156,13 +168,13 @@ uint8_t PRNT_Host_SetBidirectionalMode(USB_ClassInfo_PRNT_Host_t* const PRNTInte
                                .wIndex        = PRNTInterfaceInfo->State.InterfaceNumber,
                                .wLength       = 0,
                        };
                                .wIndex        = PRNTInterfaceInfo->State.InterfaceNumber,
                                .wLength       = 0,
                        };

-               
+

                Pipe_SelectPipe(PIPE_CONTROLPIPE);
                Pipe_SelectPipe(PIPE_CONTROLPIPE);

-               
+

                if ((ErrorCode = USB_Host_SendControlRequest(NULL)) != HOST_SENDCONTROL_Successful)
                  return ErrorCode;
        }
                if ((ErrorCode = USB_Host_SendControlRequest(NULL)) != HOST_SENDCONTROL_Successful)
                  return ErrorCode;
        }

-       
+

        return HOST_SENDCONTROL_Successful;
 }
 
        return HOST_SENDCONTROL_Successful;
 }
 


@@ -172,7 +184,7 @@ uint8_t PRNT_Host_GetPortStatus(USB_ClassInfo_PRNT_Host_t* const PRNTInterfaceIn
        USB_ControlRequest = (USB_Request_Header_t)
                {
                        .bmRequestType = (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE),
        USB_ControlRequest = (USB_Request_Header_t)
                {
                        .bmRequestType = (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE),

-                       .bRequest      = REQ_GetPortStatus,
+                       .bRequest      = PRNT_REQ_GetPortStatus,

                        .wValue        = 0,
                        .wIndex        = PRNTInterfaceInfo->State.InterfaceNumber,
                        .wLength       = sizeof(uint8_t),
                        .wValue        = 0,
                        .wIndex        = PRNTInterfaceInfo->State.InterfaceNumber,
                        .wLength       = sizeof(uint8_t),


@@ -188,7 +200,7 @@ uint8_t PRNT_Host_SoftReset(USB_ClassInfo_PRNT_Host_t* const PRNTInterfaceInfo)
        USB_ControlRequest = (USB_Request_Header_t)
                {
                        .bmRequestType = (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE),
        USB_ControlRequest = (USB_Request_Header_t)
                {
                        .bmRequestType = (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE),

-                       .bRequest      = REQ_SoftReset,
+                       .bRequest      = PRNT_REQ_SoftReset,

                        .wValue        = 0,
                        .wIndex        = PRNTInterfaceInfo->State.InterfaceNumber,
                        .wLength       = 0,
                        .wValue        = 0,
                        .wIndex        = PRNTInterfaceInfo->State.InterfaceNumber,
                        .wLength       = 0,


@@ -203,12 +215,12 @@ uint8_t PRNT_Host_Flush(USB_ClassInfo_PRNT_Host_t* const PRNTInterfaceInfo)
 {
        if ((USB_HostState != HOST_STATE_Configured) || !(PRNTInterfaceInfo->State.IsActive))
          return PIPE_READYWAIT_DeviceDisconnected;
 {
        if ((USB_HostState != HOST_STATE_Configured) || !(PRNTInterfaceInfo->State.IsActive))
          return PIPE_READYWAIT_DeviceDisconnected;

-         
+

        uint8_t ErrorCode;
 
        uint8_t ErrorCode;
 

-       Pipe_SelectPipe(PRNTInterfaceInfo->Config.DataOUTPipeNumber);   
+       Pipe_SelectPipe(PRNTInterfaceInfo->Config.DataOUTPipeNumber);

        Pipe_Unfreeze();
        Pipe_Unfreeze();

-       
+

        if (!(Pipe_BytesInPipe()))
          return PIPE_READYWAIT_NoError;
 
        if (!(Pipe_BytesInPipe()))
          return PIPE_READYWAIT_NoError;
 


@@ -225,7 +237,7 @@ uint8_t PRNT_Host_Flush(USB_ClassInfo_PRNT_Host_t* const PRNTInterfaceInfo)
        }
 
        Pipe_Freeze();
        }
 
        Pipe_Freeze();

-       
+

        return PIPE_READYWAIT_NoError;
 }
 
        return PIPE_READYWAIT_NoError;
 }
 


@@ -234,12 +246,12 @@ uint8_t PRNT_Host_SendByte(USB_ClassInfo_PRNT_Host_t* const PRNTInterfaceInfo,
 {
        if ((USB_HostState != HOST_STATE_Configured) || !(PRNTInterfaceInfo->State.IsActive))
          return PIPE_READYWAIT_DeviceDisconnected;
 {
        if ((USB_HostState != HOST_STATE_Configured) || !(PRNTInterfaceInfo->State.IsActive))
          return PIPE_READYWAIT_DeviceDisconnected;

-         
+

        uint8_t ErrorCode;
 
        uint8_t ErrorCode;
 

-       Pipe_SelectPipe(PRNTInterfaceInfo->Config.DataOUTPipeNumber);   
+       Pipe_SelectPipe(PRNTInterfaceInfo->Config.DataOUTPipeNumber);

        Pipe_Unfreeze();
        Pipe_Unfreeze();

-       
+

        if (!(Pipe_IsReadWriteAllowed()))
        {
                Pipe_ClearOUT();
        if (!(Pipe_IsReadWriteAllowed()))
        {
                Pipe_ClearOUT();


@@ -248,9 +260,9 @@ uint8_t PRNT_Host_SendByte(USB_ClassInfo_PRNT_Host_t* const PRNTInterfaceInfo,
                  return ErrorCode;
        }
 
                  return ErrorCode;
        }
 

-       Pipe_Write_Byte(Data);  
+       Pipe_Write_Byte(Data);

        Pipe_Freeze();
        Pipe_Freeze();

-       
+

        return PIPE_READYWAIT_NoError;
 }
 
        return PIPE_READYWAIT_NoError;
 }
 


@@ -265,14 +277,14 @@ uint8_t PRNT_Host_SendString(USB_ClassInfo_PRNT_Host_t* const PRNTInterfaceInfo,
 
        Pipe_SelectPipe(PRNTInterfaceInfo->Config.DataOUTPipeNumber);
        Pipe_Unfreeze();
 
        Pipe_SelectPipe(PRNTInterfaceInfo->Config.DataOUTPipeNumber);
        Pipe_Unfreeze();

-       
+

        if ((ErrorCode = Pipe_Write_Stream_LE(Buffer, Length, NO_STREAM_CALLBACK)) != PIPE_RWSTREAM_NoError)
          return ErrorCode;
 
        Pipe_ClearOUT();
        if ((ErrorCode = Pipe_Write_Stream_LE(Buffer, Length, NO_STREAM_CALLBACK)) != PIPE_RWSTREAM_NoError)
          return ErrorCode;
 
        Pipe_ClearOUT();

-       
+

        ErrorCode = Pipe_WaitUntilReady();
        ErrorCode = Pipe_WaitUntilReady();

-       
+

        Pipe_Freeze();
 
        return ErrorCode;
        Pipe_Freeze();
 
        return ErrorCode;


@@ -282,7 +294,7 @@ uint16_t PRNT_Host_BytesReceived(USB_ClassInfo_PRNT_Host_t* const PRNTInterfaceI
 {
        if ((USB_HostState != HOST_STATE_Configured) || !(PRNTInterfaceInfo->State.IsActive))
          return 0;
 {
        if ((USB_HostState != HOST_STATE_Configured) || !(PRNTInterfaceInfo->State.IsActive))
          return 0;

-       
+

        Pipe_SelectPipe(PRNTInterfaceInfo->Config.DataINPipeNumber);
        Pipe_Unfreeze();
 
        Pipe_SelectPipe(PRNTInterfaceInfo->Config.DataINPipeNumber);
        Pipe_Unfreeze();
 


@@ -303,7 +315,7 @@ uint16_t PRNT_Host_BytesReceived(USB_ClassInfo_PRNT_Host_t* const PRNTInterfaceI
        else
        {
                Pipe_Freeze();
        else
        {
                Pipe_Freeze();

-               
+

                return 0;
        }
 }
                return 0;
        }
 }


@@ -326,7 +338,7 @@ int16_t PRNT_Host_ReceiveByte(USB_ClassInfo_PRNT_Host_t* const PRNTInterfaceInfo
                if (!(Pipe_BytesInPipe()))
                  Pipe_ClearIN();
        }
                if (!(Pipe_BytesInPipe()))
                  Pipe_ClearIN();
        }

-       
+

        Pipe_Freeze();
 
        return ReceivedByte;
        Pipe_Freeze();
 
        return ReceivedByte;


@@ -342,38 +354,39 @@ uint8_t PRNT_Host_GetDeviceID(USB_ClassInfo_PRNT_Host_t* const PRNTInterfaceInfo
        USB_ControlRequest = (USB_Request_Header_t)
                {
                        .bmRequestType = (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE),
        USB_ControlRequest = (USB_Request_Header_t)
                {
                        .bmRequestType = (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE),

-                       .bRequest      =  REQ_GetDeviceID,
+                       .bRequest      = PRNT_REQ_GetDeviceID,

                        .wValue        = 0,
                        .wIndex        = PRNTInterfaceInfo->State.InterfaceNumber,
                        .wLength       = sizeof(DeviceIDStringLength),
                };
                        .wValue        = 0,
                        .wIndex        = PRNTInterfaceInfo->State.InterfaceNumber,
                        .wLength       = sizeof(DeviceIDStringLength),
                };

-               
+

        Pipe_SelectPipe(PIPE_CONTROLPIPE);
 
        if ((ErrorCode = USB_Host_SendControlRequest(&DeviceIDStringLength)) != HOST_SENDCONTROL_Successful)
          return ErrorCode;
        Pipe_SelectPipe(PIPE_CONTROLPIPE);
 
        if ((ErrorCode = USB_Host_SendControlRequest(&DeviceIDStringLength)) != HOST_SENDCONTROL_Successful)
          return ErrorCode;

-         
+

        if (!(DeviceIDStringLength))
        {
                DeviceIDString[0] = 0x00;
                return HOST_SENDCONTROL_Successful;
        }
        if (!(DeviceIDStringLength))
        {
                DeviceIDString[0] = 0x00;
                return HOST_SENDCONTROL_Successful;
        }

-       
+

        DeviceIDStringLength = SwapEndian_16(DeviceIDStringLength);
 
        if (DeviceIDStringLength > BufferSize)
          DeviceIDStringLength = BufferSize;
 
        USB_ControlRequest.wLength = DeviceIDStringLength;
        DeviceIDStringLength = SwapEndian_16(DeviceIDStringLength);
 
        if (DeviceIDStringLength > BufferSize)
          DeviceIDStringLength = BufferSize;
 
        USB_ControlRequest.wLength = DeviceIDStringLength;

-       
+

        if ((ErrorCode = USB_Host_SendControlRequest(DeviceIDString)) != HOST_SENDCONTROL_Successful)
          return ErrorCode;
        if ((ErrorCode = USB_Host_SendControlRequest(DeviceIDString)) != HOST_SENDCONTROL_Successful)
          return ErrorCode;

-         
+

        memmove(&DeviceIDString[0], &DeviceIDString[2], DeviceIDStringLength - 2);
 
        DeviceIDString[DeviceIDStringLength - 2] = 0x00;
        memmove(&DeviceIDString[0], &DeviceIDString[2], DeviceIDStringLength - 2);
 
        DeviceIDString[DeviceIDStringLength - 2] = 0x00;

-       
+

        return HOST_SENDCONTROL_Successful;
 }
 
 #endif
        return HOST_SENDCONTROL_Successful;
 }
 
 #endif

+