LUFA/Drivers/USB/Class/Host/CDC.h

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2009.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6       www.fourwalledcubicle.com
   7 */
   8
   9 /*
  10   Copyright 2009  Dean Camera (dean [at] fourwalledcubicle [dot] com)
  11
  12   Permission to use, copy, modify, and distribute this software
  13   and its documentation for any purpose and without fee is hereby
  14   granted, provided that the above copyright notice appear in all
  15   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 /** \ingroup Group_USBClassCDC
  32  *  @defgroup Group_USBClassCDCHost CDC Class Host Mode Driver
  33  *
  34  *  \section Sec_Dependencies Module Source Dependencies
  35  *  The following files must be built with any user project that uses this module:
  36  *    - LUFA/Drivers/USB/Class/Host/CDC.c
  37  *
  38  *  \section Module Description
  39  *  Host Mode USB Class driver framework interface, for the CDC USB Class driver.
  40  *
  41  *  @{
  42  */
  43
  44 #ifndef __CDC_CLASS_HOST_H__
  45 #define __CDC_CLASS_HOST_H__
  46
  47         /* Includes: */
  48                 #include "../../USB.h"
  49                 #include "../Common/CDC.h"
  50
  51         /* Enable C linkage for C++ Compilers: */
  52                 #if defined(__cplusplus)
  53                         extern "C" {
  54                 #endif
  55
  56         /* Public Interface - May be used in end-application: */
  57                 /* Type Defines: */
  58                         /** Class state structure. An instance of this structure should be made within the user application,
  59                          *  and passed to each of the CDC class driver functions as the CDCInterfaceInfo parameter. This
  60                          *  stores each CDC interface's configuration and state information.
  61                          */
  62                         typedef struct
  63                         {
  64                                 const struct
  65                                 {
  66                                         uint8_t  DataINPipeNumber; /**< Pipe number of the CDC interface's IN data pipe */
  67                                         uint8_t  DataOUTPipeNumber; /**< Pipe number of the CDC interface's OUT data pipe */
  68                                         uint8_t  NotificationPipeNumber; /**< Pipe number of the CDC interface's IN notification endpoint, if used */
  69                                 } Config; /**< Config data for the USB class interface within the device. All elements in this section
  70                                            *   <b>must</b> be set or the interface will fail to enumerate and operate correctly.
  71                                            */
  72                                 struct
  73                                 {
  74                                         uint8_t  ControlInterfaceNumber; /**< Interface number of the CDC control interface within the device */
  75
  76                                         uint16_t DataINPipeSize; /**< Size in bytes of the CDC interface's IN data pipe */
  77                                         uint16_t DataOUTPipeSize;  /**< Size in bytes of the CDC interface's OUT data pipe */
  78                                         uint16_t NotificationPipeSize;  /**< Size in bytes of the CDC interface's IN notification endpoint, if used */
  79
  80                                         struct
  81                                         {
  82                                                 uint8_t HostToDevice; /**< Control line states from the host to device, as a set of CDC_CONTROL_LINE_OUT_*
  83                                                                                            *   masks.
  84                                                                                            */
  85                                                 uint8_t DeviceToHost; /**< Control line states from the device to host, as a set of CDC_CONTROL_LINE_IN_*
  86                                                                                            *   masks.
  87                                                                                            */
  88                                         } ControlLineStates;
  89
  90                                         struct
  91                                         {
  92                                                 bool Active; /**< Indicates if the interface is currently active, i.e. attached to the connected device */
  93
  94                                                 uint32_t BaudRateBPS; /**< Baud rate of the virtual serial port, in bits per second */
  95                                                 uint8_t  CharFormat; /**< Character format of the virtual serial port, a value from the
  96                                                                                           *   CDCDevice_CDC_LineCodingFormats_t enum
  97                                                                                           */
  98                                                 uint8_t  ParityType; /**< Parity setting of the virtual serial port, a value from the
  99                                                                                           *   CDCDevice_LineCodingParity_t enum
 100                                                                                           */
 101                                                 uint8_t  DataBits; /**< Bits of data per character of the virtual serial port */
 102                                         } LineEncoding;
 103                                 } State; /**< State data for the USB class interface within the device. All elements in this section
 104                                                   *   <b>may</b> be set to initial values, but may also be ignored to default to sane values when
 105                                                   *   the interface is enumerated.
 106                                                   */
 107                         } USB_ClassInfo_CDC_Host_t;
 108
 109                 /* Enums: */
 110                         typedef enum
 111                         {
 112                                 CDC_ENUMERROR_NoError                    = 0, /**< Configuration Descriptor was processed successfully */
 113                                 CDC_ENUMERROR_ControlError               = 1, /**< A control request to the device failed to complete successfully */
 114                                 CDC_ENUMERROR_DescriptorTooLarge         = 2, /**< The device's Configuration Descriptor is too large to process */
 115                                 CDC_ENUMERROR_InvalidConfigDataReturned  = 3, /**< The device returned an invalid Configuration Descriptor */
 116                                 CDC_ENUMERROR_NoCDCInterfaceFound        = 4, /**< A compatible CDC interface was not found in the device's Configuration Descriptor */
 117                                 CDC_ENUMERROR_NoEndpointFound            = 5, /**< Compatible CDC endpoints were not found in the device's CDC interface */
 118                         } CDCHost_EnumerationFailure_ErrorCodes_t;
 119
 120                 /* Function Prototypes: */
 121                         void CDC_Host_USBTask(USB_ClassInfo_CDC_Host_t* CDCInterfaceInfo);
 122
 123         /* Private Interface - For use in library only: */
 124         #if !defined(__DOXYGEN__)
 125                 /* Macros: */
 126                         #define CDC_CONTROL_CLASS               0x02
 127                         #define CDC_CONTROL_SUBCLASS            0x02
 128                         #define CDC_CONTROL_PROTOCOL            0x01
 129                         #define CDC_DATA_CLASS                  0x0A
 130                         #define CDC_DATA_SUBCLASS               0x00
 131                         #define CDC_DATA_PROTOCOL               0x00
 132
 133                         #define CDC_FOUND_DATAPIPE_IN           (1 << 0)
 134                         #define CDC_FOUND_DATAPIPE_OUT          (1 << 1)
 135                         #define CDC_FOUND_DATAPIPE_NOTIFICATION (1 << 2)
 136
 137                 /* Function Prototypes: */
 138                         #if defined(INCLUDE_FROM_CDC_CLASS_HOST_C)
 139                                 static uint8_t CDC_Host_ProcessConfigDescriptor(USB_ClassInfo_CDC_Host_t* CDCInterfaceInfo);
 140                                 static uint8_t DComp_CDC_Host_NextCDCControlInterface(void* CurrentDescriptor);
 141                                 static uint8_t DComp_CDC_Host_NextCDCDataInterface(void* CurrentDescriptor);
 142                                 static uint8_t DComp_CDC_Host_NextInterfaceCDCDataEndpoint(void* CurrentDescriptor);
 143                         #endif
 144
 145                         void EVENT_CDC_Host_ControLineStateChanged(USB_ClassInfo_CDC_Host_t* CDCInterfaceInfo);
 146
 147                         uint8_t CDC_Host_SetLineEncoding(USB_ClassInfo_CDC_Host_t* CDCInterfaceInfo);
 148                         uint8_t CDC_Host_SendControlLineStateChange(USB_ClassInfo_CDC_Host_t* CDCInterfaceInfo);
 149
 150                         void CDC_Host_SendString(USB_ClassInfo_CDC_Host_t* CDCInterfaceInfo, char* Data, uint16_t Length);
 151                         void CDC_Host_SendByte(USB_ClassInfo_CDC_Host_t* CDCInterfaceInfo, uint8_t Data);
 152                         uint16_t CDC_Host_BytesReceived(USB_ClassInfo_CDC_Host_t* CDCInterfaceInfo);
 153                         uint8_t CDC_Host_ReceiveByte(USB_ClassInfo_CDC_Host_t* CDCInterfaceInfo);
 154
 155         #endif
 156
 157         /* Disable C linkage for C++ Compilers: */
 158                 #if defined(__cplusplus)
 159                         }
 160                 #endif
 161
 162 #endif
 163
 164 /** @} */