LUFA/Drivers/USB/LowLevel/HostChapter9.h

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2010.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6       www.fourwalledcubicle.com
   7 */
   8
   9 /*
  10   Copyright 2010  Dean Camera (dean [at] fourwalledcubicle [dot] com)
  11
  12   Permission to use, copy, modify, distribute, and sell this
  13   software and its documentation for any purpose is hereby granted
  14   without fee, provided that the above copyright notice appear in
  15   all copies and that both that the copyright notice and this
  16   permission notice and warranty disclaimer appear in supporting
  17   documentation, and that the name of the author not be used in
  18   advertising or publicity pertaining to distribution of the
  19   software without specific, written prior permission.
  20
  21   The author disclaim all warranties with regard to this
  22   software, including all implied warranties of merchantability
  23   and fitness.  In no event shall the author be liable for any
  24   special, indirect or consequential damages or any damages
  25   whatsoever resulting from loss of use, data or profits, whether
  26   in an action of contract, negligence or other tortious action,
  27   arising out of or in connection with the use or performance of
  28   this software.
  29 */
  30
  31 /** \file
  32  *  \brief USB host standard request management.
  33  *
  34  *  This file contains the function prototypes necessary for the issuing of outgoing standard control requests
  35  *  when the library is in USB host mode.
  36  *
  37  *  \note This file should not be included directly. It is automatically included as needed by the USB driver
  38  *        dispatch header located in LUFA/Drivers/USB/USB.h.
  39  */
  40
  41 #ifndef __HOSTCHAPTER9_H__
  42 #define __HOSTCHAPTER9_H__
  43
  44         /* Includes: */
  45                 #include <avr/io.h>
  46                 #include <stdbool.h>
  47
  48                 #include "LowLevel.h"
  49                 #include "../HighLevel/USBMode.h"
  50                 #include "../HighLevel/StdRequestType.h"
  51
  52         /* Enable C linkage for C++ Compilers: */
  53                 #if defined(__cplusplus)
  54                         extern "C" {
  55                 #endif
  56
  57         /* Preprocessor Checks: */
  58                 #if !defined(__INCLUDE_FROM_USB_DRIVER)
  59                         #error Do not include this file directly. Include LUFA/Drivers/USB/USB.h instead.
  60                 #endif
  61
  62         /* Public Interface - May be used in end-application: */
  63                 /* Enums: */
  64                         /** Enum for the \ref USB_Host_SendControlRequest() return code, indicating the reason for the error
  65                          *  if the transfer of the request is unsuccessful.
  66                          *
  67                          *  \ingroup Group_PipeControlReq
  68                          */
  69                         enum USB_Host_SendControlErrorCodes_t
  70                         {
  71                                 HOST_SENDCONTROL_Successful         = 0, /**< No error occurred in the request transfer. */
  72                                 HOST_SENDCONTROL_DeviceDisconnected = 1, /**< The attached device was disconnected during the
  73                                                                         *   request transfer.
  74                                                                         */
  75                                 HOST_SENDCONTROL_PipeError          = 2, /**< An error occurred in the pipe while sending the request. */
  76                                 HOST_SENDCONTROL_SetupStalled       = 3, /**< The attached device stalled the request, usually
  77                                                                         *   indicating that the request is unsupported on the device.
  78                                                                         */
  79                                 HOST_SENDCONTROL_SoftwareTimeOut    = 4, /**< The request or data transfer timed out. */
  80                         };
  81
  82                 /* Function Prototypes: */
  83                         /** Sends the request stored in the \ref USB_ControlRequest global structure to the attached device,
  84                          *  and transfers the data stored in the buffer to the device, or from the device to the buffer
  85                          *  as requested. The transfer is made on the currently selected pipe.
  86                          *
  87                          *  \ingroup Group_PipeControlReq
  88                          *
  89                          *  \param[in] BufferPtr  Pointer to the start of the data buffer if the request has a data stage, or
  90                          *                        NULL if the request transfers no data to or from the device.
  91                          *
  92                          *  \return A value from the \ref USB_Host_SendControlErrorCodes_t enum to indicate the result.
  93                          */
  94                         uint8_t USB_Host_SendControlRequest(void* BufferPtr);
  95
  96         /* Private Interface - For use in library only: */
  97         #if !defined(__DOXYGEN__)
  98                 /* Enums: */
  99                         enum USB_WaitForTypes_t
 100                         {
 101                                 USB_HOST_WAITFOR_SetupSent,
 102                                 USB_HOST_WAITFOR_InReceived,
 103                                 USB_HOST_WAITFOR_OutReady,
 104                         };
 105
 106                 /* Function Prototypes: */
 107                         #if defined(__INCLUDE_FROM_HOSTCHAPTER9_C)
 108                                 static uint8_t USB_Host_WaitForIOS(const uint8_t WaitType);
 109                         #endif
 110         #endif
 111
 112         /* Disable C linkage for C++ Compilers: */
 113                 #if defined(__cplusplus)
 114                         }
 115                 #endif
 116
 117 #endif