Oops - Bootloader optimizations to GetDescriptor() don't work, as the Configuration...

[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 e291ae3..bd960e2 100644 (file)
--- a/LUFA/Drivers/USB/Class/Host/Printer.c
+++ b/LUFA/Drivers/USB/Class/Host/Printer.c
@@ -1,21 +1,21 @@
 /*
              LUFA Library
 /*
              LUFA Library

-     Copyright (C) Dean Camera, 2010.
-              
+     Copyright (C) Dean Camera, 2011.
+

   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 2011  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


@@ -29,94 +29,135 @@
 */
 
 #define  __INCLUDE_FROM_USB_DRIVER
 */
 
 #define  __INCLUDE_FROM_USB_DRIVER

-#include "../../HighLevel/USBMode.h"
+#include "../../Core/USBMode.h"
+

 #if defined(USB_CAN_BE_HOST)
 
 #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"
 
 #include "Printer.h"
 

-uint8_t PRNT_Host_ConfigurePipes(USB_ClassInfo_PRNT_Host_t* const PRNTInterfaceInfo, uint16_t ConfigDescriptorSize,
-                                                            void* DeviceConfigDescriptor)
+uint8_t PRNT_Host_ConfigurePipes(USB_ClassInfo_PRNT_Host_t* const PRNTInterfaceInfo,
+                                 uint16_t ConfigDescriptorSize,
+                                                            void* ConfigDescriptorData)

 {
 {

-       uint8_t FoundEndpoints = 0;
-       
+       USB_Descriptor_Endpoint_t*  DataINEndpoint   = NULL;
+       USB_Descriptor_Endpoint_t*  DataOUTEndpoint  = NULL;
+       USB_Descriptor_Interface_t* PrinterInterface = NULL;
+

        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;

-       
-       if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &DeviceConfigDescriptor,
-                                     DComp_NextPRNTInterface) != DESCRIPTOR_SEARCH_COMP_Found)
-       {
-               return PRNT_ENUMERROR_NoPrinterInterfaceFound;
-       }

 
 

-       USB_Descriptor_Interface_t* PrinterInterface = DESCRIPTOR_PCAST(DeviceConfigDescriptor, USB_Descriptor_Interface_t);
-
-       PRNTInterfaceInfo->State.InterfaceNumber  = PrinterInterface->InterfaceNumber;
-       PRNTInterfaceInfo->State.AlternateSetting = PrinterInterface->AlternateSetting;
-       
-       while (FoundEndpoints != (PRNT_FOUND_DATAPIPE_IN | PRNT_FOUND_DATAPIPE_OUT))
+       while (!(DataINEndpoint) || !(DataOUTEndpoint))

        {
        {

-               if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &DeviceConfigDescriptor,
-                                             DComp_NextPRNTInterfaceEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
+               if (!(PrinterInterface) ||
+                   USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
+                                             DCOMP_PRNT_Host_NextPRNTInterfaceEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)

                {
                {

-                       return PRNT_ENUMERROR_EndpointsNotFound;
+                       if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
+                                                     DCOMP_PRNT_Host_NextPRNTInterface) != DESCRIPTOR_SEARCH_COMP_Found)
+                       {
+                               return PRNT_ENUMERROR_NoCompatibleInterfaceFound;
+                       }
+
+                       PrinterInterface = DESCRIPTOR_PCAST(ConfigDescriptorData, USB_Descriptor_Interface_t);
+
+                       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)
 
                if (EndpointData->EndpointAddress & ENDPOINT_DESCRIPTOR_DIR_IN)

+                 DataINEndpoint  = EndpointData;
+               else
+                 DataOUTEndpoint = EndpointData;
+       }
+
+       for (uint8_t PipeNum = 1; PipeNum < PIPE_TOTAL_PIPES; PipeNum++)
+       {
+               uint16_t Size;
+               uint8_t  Type;
+               uint8_t  Token;
+               uint8_t  EndpointAddress;
+               bool     DoubleBanked;
+
+               if (PipeNum == PRNTInterfaceInfo->Config.DataINPipeNumber)

                {
                {

-                       Pipe_ConfigurePipe(PRNTInterfaceInfo->Config.DataINPipeNumber, EP_TYPE_BULK, PIPE_TOKEN_IN,
-                                          EndpointData->EndpointAddress, EndpointData->EndpointSize,
-                                          PRNTInterfaceInfo->Config.DataINPipeDoubleBank ? PIPE_BANK_DOUBLE : PIPE_BANK_SINGLE);
-                       PRNTInterfaceInfo->State.DataINPipeSize = EndpointData->EndpointSize;
+                       Size            = DataINEndpoint->EndpointSize;
+                       EndpointAddress = DataINEndpoint->EndpointAddress;
+                       Token           = PIPE_TOKEN_IN;
+                       Type            = EP_TYPE_BULK;
+                       DoubleBanked    = PRNTInterfaceInfo->Config.DataINPipeDoubleBank;

 
 

-                       FoundEndpoints |= PRNT_FOUND_DATAPIPE_IN;
+                       PRNTInterfaceInfo->State.DataINPipeSize = DataINEndpoint->EndpointSize;
+               }
+               else if (PipeNum == PRNTInterfaceInfo->Config.DataOUTPipeNumber)
+               {
+                       Size            = DataOUTEndpoint->EndpointSize;
+                       EndpointAddress = DataOUTEndpoint->EndpointAddress;
+                       Token           = PIPE_TOKEN_OUT;
+                       Type            = EP_TYPE_BULK;
+                       DoubleBanked    = PRNTInterfaceInfo->Config.DataOUTPipeDoubleBank;
+
+                       PRNTInterfaceInfo->State.DataOUTPipeSize = DataOUTEndpoint->EndpointSize;

                }
                else
                {
                }
                else
                {

-                       Pipe_ConfigurePipe(PRNTInterfaceInfo->Config.DataOUTPipeNumber, EP_TYPE_BULK, PIPE_TOKEN_OUT,
-                                          EndpointData->EndpointAddress, EndpointData->EndpointSize,
-                                          PRNTInterfaceInfo->Config.DataOUTPipeDoubleBank ? PIPE_BANK_DOUBLE : PIPE_BANK_SINGLE);
-                       PRNTInterfaceInfo->State.DataOUTPipeSize = EndpointData->EndpointSize;
+                       continue;
+               }

 
 

-                       FoundEndpoints |= PRNT_FOUND_DATAPIPE_OUT;
-               }               
+               if (!(Pipe_ConfigurePipe(PipeNum, Type, Token, EndpointAddress, Size,
+                                        DoubleBanked ? PIPE_BANK_DOUBLE : PIPE_BANK_SINGLE)))
+               {
+                       return PRNT_ENUMERROR_PipeConfigurationFailed;
+               }

        }
 
        }
 

+       PRNTInterfaceInfo->State.InterfaceNumber  = PrinterInterface->InterfaceNumber;
+       PRNTInterfaceInfo->State.AlternateSetting = PrinterInterface->AlternateSetting;

        PRNTInterfaceInfo->State.IsActive = true;
        PRNTInterfaceInfo->State.IsActive = true;

+

        return PRNT_ENUMERROR_NoError;
 }
 
        return PRNT_ENUMERROR_NoError;
 }
 

-static uint8_t DComp_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;
 }
 
        return DESCRIPTOR_SEARCH_NotFound;
 }
 

-static uint8_t DComp_NextPRNTInterfaceEndpoint(void* CurrentDescriptor)
+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;
        }


@@ -124,12 +165,22 @@ static uint8_t DComp_NextPRNTInterfaceEndpoint(void* CurrentDescriptor)
        return DESCRIPTOR_SEARCH_NotFound;
 }
 
        return DESCRIPTOR_SEARCH_NotFound;
 }
 

+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);
+       #endif
+}
+

 uint8_t PRNT_Host_SetBidirectionalMode(USB_ClassInfo_PRNT_Host_t* const PRNTInterfaceInfo)
 {
        if (PRNTInterfaceInfo->State.AlternateSetting)
        {
                uint8_t ErrorCode;
 uint8_t PRNT_Host_SetBidirectionalMode(USB_ClassInfo_PRNT_Host_t* const PRNTInterfaceInfo)
 {
        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),


@@ -138,22 +189,23 @@ 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;
 }
 

-uint8_t PRNT_Host_GetPortStatus(USB_ClassInfo_PRNT_Host_t* const PRNTInterfaceInfo, uint8_t* const PortStatus)
+uint8_t PRNT_Host_GetPortStatus(USB_ClassInfo_PRNT_Host_t* const PRNTInterfaceInfo,
+                                uint8_t* const PortStatus)

 {
        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),


@@ -169,10 +221,10 @@ 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,
-                       .wValue       = 0,
-                       .wIndex       = PRNTInterfaceInfo->State.InterfaceNumber,
-                       .wLength      = 0,
+                       .bRequest      = PRNT_REQ_SoftReset,
+                       .wValue        = 0,
+                       .wIndex        = PRNTInterfaceInfo->State.InterfaceNumber,
+                       .wLength       = 0,

                };
 
        Pipe_SelectPipe(PIPE_CONTROLPIPE);
                };
 
        Pipe_SelectPipe(PIPE_CONTROLPIPE);


@@ -180,7 +232,63 @@ uint8_t PRNT_Host_SoftReset(USB_ClassInfo_PRNT_Host_t* const PRNTInterfaceInfo)
        return USB_Host_SendControlRequest(NULL);
 }
 
        return USB_Host_SendControlRequest(NULL);
 }
 

-uint8_t PRNT_Host_SendData(USB_ClassInfo_PRNT_Host_t* const PRNTInterfaceInfo, void* PrinterCommands, uint16_t CommandSize)
+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;
+
+       uint8_t ErrorCode;
+
+       Pipe_SelectPipe(PRNTInterfaceInfo->Config.DataOUTPipeNumber);
+       Pipe_Unfreeze();
+
+       if (!(Pipe_BytesInPipe()))
+         return PIPE_READYWAIT_NoError;
+
+       bool BankFull = !(Pipe_IsReadWriteAllowed());
+
+       Pipe_ClearOUT();
+
+       if (BankFull)
+       {
+               if ((ErrorCode = Pipe_WaitUntilReady()) != PIPE_READYWAIT_NoError)
+                 return ErrorCode;
+
+               Pipe_ClearOUT();
+       }
+
+       Pipe_Freeze();
+
+       return PIPE_READYWAIT_NoError;
+}
+
+uint8_t PRNT_Host_SendByte(USB_ClassInfo_PRNT_Host_t* const PRNTInterfaceInfo,
+                           const uint8_t Data)
+{
+       if ((USB_HostState != HOST_STATE_Configured) || !(PRNTInterfaceInfo->State.IsActive))
+         return PIPE_READYWAIT_DeviceDisconnected;
+
+       uint8_t ErrorCode;
+
+       Pipe_SelectPipe(PRNTInterfaceInfo->Config.DataOUTPipeNumber);
+       Pipe_Unfreeze();
+
+       if (!(Pipe_IsReadWriteAllowed()))
+       {
+               Pipe_ClearOUT();
+
+               if ((ErrorCode = Pipe_WaitUntilReady()) != PIPE_READYWAIT_NoError)
+                 return ErrorCode;
+       }
+
+       Pipe_Write_Byte(Data);
+       Pipe_Freeze();
+
+       return PIPE_READYWAIT_NoError;
+}
+
+uint8_t PRNT_Host_SendString(USB_ClassInfo_PRNT_Host_t* const PRNTInterfaceInfo,
+                             void* String)

 {
        uint8_t ErrorCode;
 
 {
        uint8_t ErrorCode;
 


@@ -189,23 +297,100 @@ uint8_t PRNT_Host_SendData(USB_ClassInfo_PRNT_Host_t* const PRNTInterfaceInfo, v
 
        Pipe_SelectPipe(PRNTInterfaceInfo->Config.DataOUTPipeNumber);
        Pipe_Unfreeze();
 
        Pipe_SelectPipe(PRNTInterfaceInfo->Config.DataOUTPipeNumber);
        Pipe_Unfreeze();

-       
-       if ((ErrorCode = Pipe_Write_Stream_LE(PrinterCommands, CommandSize, NO_STREAM_CALLBACK)) != PIPE_RWSTREAM_NoError)
+
+       if ((ErrorCode = Pipe_Write_Stream_LE(String, strlen(String), NULL)) != PIPE_RWSTREAM_NoError)

          return ErrorCode;
 
        Pipe_ClearOUT();
          return ErrorCode;
 
        Pipe_ClearOUT();

-       while (!(Pipe_IsOUTReady()))
+
+       ErrorCode = Pipe_WaitUntilReady();
+
+       Pipe_Freeze();
+
+       return ErrorCode;
+}
+
+uint8_t PRNT_Host_SendData(USB_ClassInfo_PRNT_Host_t* const PRNTInterfaceInfo,
+                           void* Buffer,
+                           const uint16_t Length)
+{
+       uint8_t ErrorCode;
+
+       if ((USB_HostState != HOST_STATE_Configured) || !(PRNTInterfaceInfo->State.IsActive))
+         return PIPE_RWSTREAM_DeviceDisconnected;
+
+       Pipe_SelectPipe(PRNTInterfaceInfo->Config.DataOUTPipeNumber);
+       Pipe_Unfreeze();
+
+       if ((ErrorCode = Pipe_Write_Stream_LE(Buffer, Length, NULL)) != PIPE_RWSTREAM_NoError)
+         return ErrorCode;
+
+       Pipe_ClearOUT();
+
+       ErrorCode = Pipe_WaitUntilReady();
+
+       Pipe_Freeze();
+
+       return ErrorCode;
+}
+
+uint16_t PRNT_Host_BytesReceived(USB_ClassInfo_PRNT_Host_t* const PRNTInterfaceInfo)
+{
+       if ((USB_HostState != HOST_STATE_Configured) || !(PRNTInterfaceInfo->State.IsActive))
+         return 0;
+
+       Pipe_SelectPipe(PRNTInterfaceInfo->Config.DataINPipeNumber);
+       Pipe_Unfreeze();
+
+       if (Pipe_IsINReceived())
+       {
+               if (!(Pipe_BytesInPipe()))
+               {
+                       Pipe_ClearIN();
+                       Pipe_Freeze();
+                       return 0;
+               }
+               else
+               {
+                       Pipe_Freeze();
+                       return Pipe_BytesInPipe();
+               }
+       }
+       else
+       {
+               Pipe_Freeze();
+
+               return 0;
+       }
+}
+
+int16_t PRNT_Host_ReceiveByte(USB_ClassInfo_PRNT_Host_t* const PRNTInterfaceInfo)
+{
+       if ((USB_HostState != HOST_STATE_Configured) || !(PRNTInterfaceInfo->State.IsActive))
+         return PIPE_RWSTREAM_DeviceDisconnected;
+
+       int16_t ReceivedByte = -1;
+
+       Pipe_SelectPipe(PRNTInterfaceInfo->Config.DataINPipeNumber);
+       Pipe_Unfreeze();
+
+       if (Pipe_IsINReceived())

        {
        {

-               if (USB_HostState == HOST_STATE_Unattached)
-                 return PIPE_RWSTREAM_DeviceDisconnected;
+               if (Pipe_BytesInPipe())
+                 ReceivedByte = Pipe_Read_Byte();
+
+               if (!(Pipe_BytesInPipe()))
+                 Pipe_ClearIN();

        }
        }

-       
+

        Pipe_Freeze();
 
        Pipe_Freeze();
 

-       return PIPE_RWSTREAM_NoError;
+       return ReceivedByte;

 }
 
 }
 

-uint8_t PRNT_Host_GetDeviceID(USB_ClassInfo_PRNT_Host_t* const PRNTInterfaceInfo, char* DeviceIDString, uint16_t BufferSize)
+uint8_t PRNT_Host_GetDeviceID(USB_ClassInfo_PRNT_Host_t* const PRNTInterfaceInfo,
+                              char* const DeviceIDString,
+                              const uint16_t BufferSize)

 {
        uint8_t  ErrorCode = HOST_SENDCONTROL_Successful;
        uint16_t DeviceIDStringLength = 0;
 {
        uint8_t  ErrorCode = HOST_SENDCONTROL_Successful;
        uint16_t DeviceIDStringLength = 0;


@@ -213,38 +398,39 @@ 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

+