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

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2011.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6            www.lufa-lib.org
   7 */
   8
   9 /*
  10   Copyright 2011  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 Common definitions and declarations for the library USB CDC Class driver.
  33  *
  34  *  Common definitions and declarations for the library USB CDC Class driver.
  35  *
  36  *  \note This file should not be included directly. It is automatically included as needed by the USB module driver
  37  *        dispatch header located in LUFA/Drivers/USB.h.
  38  */
  39
  40 /** \ingroup Group_USBClassCDC
  41  *  \defgroup Group_USBClassCDCCommon  Common Class Definitions
  42  *
  43  *  \section Sec_ModDescription Module Description
  44  *  Constants, Types and Enum definitions that are common to both Device and Host modes for the USB
  45  *  CDC Class.
  46  *
  47  *  @{
  48  */
  49
  50 #ifndef _CDC_CLASS_COMMON_H_
  51 #define _CDC_CLASS_COMMON_H_
  52
  53         /* Includes: */
  54                 #include "../../Core/StdDescriptors.h"
  55
  56         /* Enable C linkage for C++ Compilers: */
  57                 #if defined(__cplusplus)
  58                         extern "C" {
  59                 #endif
  60
  61         /* Preprocessor Checks: */
  62                 #if !defined(__INCLUDE_FROM_CDC_DRIVER)
  63                         #error Do not include this file directly. Include LUFA/Drivers/USB.h instead.
  64                 #endif
  65
  66         /* Macros: */
  67                 /** \name Virtual Control Line Masks */
  68                 //@{
  69                 /** Mask for the DTR handshake line for use with the \ref CDC_REQ_SetControlLineState class-specific request
  70                  *  from the host, to indicate that the DTR line state should be high.
  71                  */
  72                 #define CDC_CONTROL_LINE_OUT_DTR         (1 << 0)
  73
  74                 /** Mask for the RTS handshake line for use with the \ref CDC_REQ_SetControlLineState class-specific request
  75                  *  from the host, to indicate that the RTS line state should be high.
  76                  */
  77                 #define CDC_CONTROL_LINE_OUT_RTS         (1 << 1)
  78
  79                 /** Mask for the DCD handshake line for use with the \ref CDC_NOTIF_SerialState class-specific notification
  80                  *  from the device to the host, to indicate that the DCD line state is currently high.
  81                  */
  82                 #define CDC_CONTROL_LINE_IN_DCD          (1 << 0)
  83
  84                 /** Mask for the DSR handshake line for use with the \ref CDC_NOTIF_SerialState class-specific notification
  85                  *  from the device to the host, to indicate that the DSR line state is currently high.
  86                  */
  87                 #define CDC_CONTROL_LINE_IN_DSR          (1 << 1)
  88
  89                 /** Mask for the BREAK handshake line for use with the \ref CDC_NOTIF_SerialState class-specific notification
  90                  *  from the device to the host, to indicate that the BREAK line state is currently high.
  91                  */
  92                 #define CDC_CONTROL_LINE_IN_BREAK        (1 << 2)
  93
  94                 /** Mask for the RING handshake line for use with the \ref CDC_NOTIF_SerialState class-specific notification
  95                  *  from the device to the host, to indicate that the RING line state is currently high.
  96                  */
  97                 #define CDC_CONTROL_LINE_IN_RING         (1 << 3)
  98
  99                 /** Mask for use with the \ref CDC_NOTIF_SerialState class-specific notification from the device to the host,
 100                  *  to indicate that a framing error has occurred on the virtual serial port.
 101                  */
 102                 #define CDC_CONTROL_LINE_IN_FRAMEERROR   (1 << 4)
 103
 104                 /** Mask for use with the \ref CDC_NOTIF_SerialState class-specific notification from the device to the host,
 105                  *  to indicate that a parity error has occurred on the virtual serial port.
 106                  */
 107                 #define CDC_CONTROL_LINE_IN_PARITYERROR  (1 << 5)
 108
 109                 /** Mask for use with the \ref CDC_NOTIF_SerialState class-specific notification from the device to the host,
 110                  *  to indicate that a data overrun error has occurred on the virtual serial port.
 111                  */
 112                 #define CDC_CONTROL_LINE_IN_OVERRUNERROR (1 << 6)
 113                 //@}
 114
 115                 /** Macro to define a CDC class-specific functional descriptor. CDC functional descriptors have a
 116                  *  uniform structure but variable sized data payloads, thus cannot be represented accurately by
 117                  *  a single typedef struct. A macro is used instead so that functional descriptors can be created
 118                  *  easily by specifying the size of the payload. This allows \c sizeof() to work correctly.
 119                  *
 120                  *  \param[in] DataSize  Size in bytes of the CDC functional descriptor's data payload.
 121                  */
 122                 #define CDC_FUNCTIONAL_DESCRIPTOR(DataSize)        \
 123                      struct                                        \
 124                      {                                             \
 125                           USB_Descriptor_Header_t Header;          \
 126                               uint8_t                 SubType;         \
 127                           uint8_t                 Data[DataSize];  \
 128                      }
 129
 130         /* Enums: */
 131                 /** Enum for possible Class, Subclass and Protocol values of device and interface descriptors relating to the CDC
 132                  *  device class.
 133                  */
 134                 enum CDC_Descriptor_ClassSubclassProtocol_t
 135                 {
 136                         CDC_CSCP_CDCClass               = 0x02, /**< Descriptor Class value indicating that the device or interface
 137                                                                  *   belongs to the CDC class.
 138                                                                  */
 139                         CDC_CSCP_NoSpecificSubclass     = 0x00, /**< Descriptor Subclass value indicating that the device or interface
 140                                                                  *   belongs to no specific subclass of the CDC class.
 141                                                                  */
 142                         CDC_CSCP_ACMSubclass            = 0x02, /**< Descriptor Subclass value indicating that the device or interface
 143                                                                  *   belongs to the Abstract Control Model CDC subclass.
 144                                                                  */
 145                         CDC_CSCP_ATCommandProtocol      = 0x01, /**< Descriptor Protocol value indicating that the device or interface
 146                                                                  *   belongs to the AT Command protocol of the CDC class.
 147                                                                  */
 148                         CDC_CSCP_NoSpecificProtocol     = 0x00, /**< Descriptor Class value indicating that the device or interface
 149                                                                  *   belongs to no specific protocol of the CDC class.
 150                                                                  */
 151                         CDC_CSCP_VendorSpecificProtocol = 0xFF, /**< Descriptor Class value indicating that the device or interface
 152                                                                  *   belongs to a vendor-specific protocol of the CDC class.
 153                                                                  */
 154                         CDC_CSCP_CDCDataClass           = 0x0A, /**< Descriptor Class value indicating that the device or interface
 155                                                                  *   belongs to the CDC Data class.
 156                                                                  */
 157                         CDC_CSCP_NoDataSubclass         = 0x00, /**< Descriptor Subclass value indicating that the device or interface
 158                                                                  *   belongs to no specific subclass of the CDC data class.
 159                                                                  */
 160                         CDC_CSCP_NoDataProtocol         = 0x00, /**< Descriptor Protocol value indicating that the device or interface
 161                                                                  *   belongs to no specific protocol of the CDC data class.
 162                                                                  */
 163                 };
 164
 165                 /** Enum for the CDC class specific control requests that can be issued by the USB bus host. */
 166                 enum CDC_ClassRequests_t
 167                 {
 168                         CDC_REQ_SendEncapsulatedCommand = 0x00, /**< CDC class-specific request to send an encapsulated command to the device. */
 169                         CDC_REQ_GetEncapsulatedResponse = 0x01, /**< CDC class-specific request to retrieve an encapsulated command response from the device. */
 170                         CDC_REQ_SetLineEncoding         = 0x20, /**< CDC class-specific request to set the current virtual serial port configuration settings. */
 171                         CDC_REQ_GetLineEncoding         = 0x21, /**< CDC class-specific request to get the current virtual serial port configuration settings. */
 172                         CDC_REQ_SetControlLineState     = 0x22, /**< CDC class-specific request to set the current virtual serial port handshake line states. */
 173                         CDC_REQ_SendBreak               = 0x23, /**< CDC class-specific request to send a break to the receiver via the carrier channel. */
 174                 };
 175
 176                 /** Enum for the CDC class specific notification requests that can be issued by a CDC device to a host. */
 177                 enum CDC_ClassNotifications_t
 178                 {
 179                         CDC_NOTIF_SerialState               = 0x20, /**< Notification type constant for a change in the virtual serial port
 180                                                                      *   handshake line states, for use with a \ref USB_Request_Header_t
 181                                                                      *   notification structure when sent to the host via the CDC notification
 182                                                                      *   endpoint.
 183                                                                      */
 184                 };
 185
 186                 /** Enum for the CDC class specific interface descriptor subtypes. */
 187                 enum CDC_DescriptorSubtypes_t
 188                 {
 189                         CDC_DSUBTYPE_CSInterface_Header           = 0x00, /**< CDC class-specific Header functional descriptor. */
 190                         CDC_DSUBTYPE_CSInterface_CallManagement   = 0x01, /**< CDC class-specific Call Management functional descriptor. */
 191                         CDC_DSUBTYPE_CSInterface_ACM              = 0x02, /**< CDC class-specific Abstract Control Model functional descriptor. */
 192                         CDC_DSUBTYPE_CSInterface_DirectLine       = 0x03, /**< CDC class-specific Direct Line functional descriptor. */
 193                         CDC_DSUBTYPE_CSInterface_TelephoneRinger  = 0x04, /**< CDC class-specific Telephone Ringer functional descriptor. */
 194                         CDC_DSUBTYPE_CSInterface_TelephoneCall    = 0x05, /**< CDC class-specific Telephone Call functional descriptor. */
 195                         CDC_DSUBTYPE_CSInterface_Union            = 0x06, /**< CDC class-specific Union functional descriptor. */
 196                         CDC_DSUBTYPE_CSInterface_CountrySelection = 0x07, /**< CDC class-specific Country Selection functional descriptor. */
 197                         CDC_DSUBTYPE_CSInterface_TelephoneOpModes = 0x08, /**< CDC class-specific Telephone Operation Modes functional descriptor. */
 198                         CDC_DSUBTYPE_CSInterface_USBTerminal      = 0x09, /**< CDC class-specific USB Terminal functional descriptor. */
 199                         CDC_DSUBTYPE_CSInterface_NetworkChannel   = 0x0A, /**< CDC class-specific Network Channel functional descriptor. */
 200                         CDC_DSUBTYPE_CSInterface_ProtocolUnit     = 0x0B, /**< CDC class-specific Protocol Unit functional descriptor. */
 201                         CDC_DSUBTYPE_CSInterface_ExtensionUnit    = 0x0C, /**< CDC class-specific Extension Unit functional descriptor. */
 202                         CDC_DSUBTYPE_CSInterface_MultiChannel     = 0x0D, /**< CDC class-specific Multi-Channel Management functional descriptor. */
 203                         CDC_DSUBTYPE_CSInterface_CAPI             = 0x0E, /**< CDC class-specific Common ISDN API functional descriptor. */
 204                         CDC_DSUBTYPE_CSInterface_Ethernet         = 0x0F, /**< CDC class-specific Ethernet functional descriptor. */
 205                         CDC_DSUBTYPE_CSInterface_ATM              = 0x10, /**< CDC class-specific Asynchronous Transfer Mode functional descriptor. */
 206                 };
 207
 208                 /** Enum for the possible line encoding formats of a virtual serial port. */
 209                 enum CDC_LineEncodingFormats_t
 210                 {
 211                         CDC_LINEENCODING_OneStopBit          = 0, /**< Each frame contains one stop bit. */
 212                         CDC_LINEENCODING_OneAndAHalfStopBits = 1, /**< Each frame contains one and a half stop bits. */
 213                         CDC_LINEENCODING_TwoStopBits         = 2, /**< Each frame contains two stop bits. */
 214                 };
 215
 216                 /** Enum for the possible line encoding parity settings of a virtual serial port. */
 217                 enum CDC_LineEncodingParity_t
 218                 {
 219                         CDC_PARITY_None  = 0, /**< No parity bit mode on each frame. */
 220                         CDC_PARITY_Odd   = 1, /**< Odd parity bit mode on each frame. */
 221                         CDC_PARITY_Even  = 2, /**< Even parity bit mode on each frame. */
 222                         CDC_PARITY_Mark  = 3, /**< Mark parity bit mode on each frame. */
 223                         CDC_PARITY_Space = 4, /**< Space parity bit mode on each frame. */
 224                 };
 225
 226         /* Type Defines: */
 227                 /** \brief CDC class-specific Functional Header Descriptor (LUFA naming conventions).
 228                  *
 229                  *  Type define for a CDC class-specific functional header descriptor. This indicates to the host that the device
 230                  *  contains one or more CDC functional data descriptors, which give the CDC interface's capabilities and configuration.
 231                  *  See the CDC class specification for more details.
 232                  *
 233                  *  \see \ref USB_CDC_StdDescriptor_FunctionalHeader_t for the version of this type with standard element names.
 234                  */
 235                 typedef struct
 236                 {
 237                         USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length. */
 238                         uint8_t                 Subtype; /**< Sub type value used to distinguish between CDC class-specific descriptors,
 239                                                           *   must be \ref CDC_DSUBTYPE_CSInterface_Header.
 240                                                           */
 241                         uint16_t                CDCSpecification; /**< Version number of the CDC specification implemented by the device,
 242                                                                    *   encoded in BCD format.
 243                                                                    */
 244                 } ATTR_PACKED USB_CDC_Descriptor_FunctionalHeader_t;
 245
 246                 /** \brief CDC class-specific Functional Header Descriptor (USB-IF naming conventions).
 247                  *
 248                  *  Type define for a CDC class-specific functional header descriptor. This indicates to the host that the device
 249                  *  contains one or more CDC functional data descriptors, which give the CDC interface's capabilities and configuration.
 250                  *  See the CDC class specification for more details.
 251                  *
 252                  *  \see \ref USB_CDC_Descriptor_FunctionalHeader_t for the version of this type with non-standard LUFA specific
 253                  *       element names.
 254                  */
 255                 typedef struct
 256                 {
 257                         uint8_t  bFunctionLength; /**< Size of the descriptor, in bytes. */
 258                         uint8_t  bDescriptorType; /**< Type of the descriptor, either a value in \ref USB_DescriptorTypes_t or a value
 259                                                    *   given by the specific class.
 260                                                    */
 261                         uint8_t  bDescriptorSubType; /**< Sub type value used to distinguish between CDC class-specific descriptors,
 262                                                       *   must be \ref CDC_DSUBTYPE_CSInterface_Header.
 263                                                       */
 264                         uint16_t bcdCDC; /**< Version number of the CDC specification implemented by the device, encoded in BCD format. */
 265                 } ATTR_PACKED USB_CDC_StdDescriptor_FunctionalHeader_t;
 266
 267                 /** \brief CDC class-specific Functional ACM Descriptor (LUFA naming conventions).
 268                  *
 269                  *  Type define for a CDC class-specific functional ACM descriptor. This indicates to the host that the CDC interface
 270                  *  supports the CDC ACM subclass of the CDC specification. See the CDC class specification for more details.
 271                  *
 272                  *  \see \ref USB_CDC_StdDescriptor_FunctionalACM_t for the version of this type with standard element names.
 273                  */
 274                 typedef struct
 275                 {
 276                         USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length. */
 277                         uint8_t                 Subtype; /**< Sub type value used to distinguish between CDC class-specific descriptors,
 278                                                           *   must be \ref CDC_DSUBTYPE_CSInterface_ACM.
 279                                                           */
 280                         uint8_t                 Capabilities; /**< Capabilities of the ACM interface, given as a bit mask. For most devices,
 281                                                                *   this should be set to a fixed value of 0x06 - for other capabilities, refer
 282                                                                *   to the CDC ACM specification.
 283                                                                */
 284                 } ATTR_PACKED USB_CDC_Descriptor_FunctionalACM_t;
 285
 286                 /** \brief CDC class-specific Functional ACM Descriptor (USB-IF naming conventions).
 287                  *
 288                  *  Type define for a CDC class-specific functional ACM descriptor. This indicates to the host that the CDC interface
 289                  *  supports the CDC ACM subclass of the CDC specification. See the CDC class specification for more details.
 290                  *
 291                  *  \see \ref USB_CDC_Descriptor_FunctionalACM_t for the version of this type with non-standard LUFA specific
 292                  *       element names.
 293                  */
 294                 typedef struct
 295                 {
 296                         uint8_t bFunctionLength; /**< Size of the descriptor, in bytes. */
 297                         uint8_t bDescriptorType; /**< Type of the descriptor, either a value in \ref USB_DescriptorTypes_t or a value
 298                                                   *   given by the specific class.
 299                                                   */
 300                         uint8_t bDescriptorSubType; /**< Sub type value used to distinguish between CDC class-specific descriptors,
 301                                                      *   must be \ref CDC_DSUBTYPE_CSInterface_ACM.
 302                                                      */
 303                         uint8_t bmCapabilities; /**< Capabilities of the ACM interface, given as a bit mask. For most devices,
 304                                                  *   this should be set to a fixed value of 0x06 - for other capabilities, refer
 305                                                  *   to the CDC ACM specification.
 306                                                  */
 307                 } ATTR_PACKED USB_CDC_StdDescriptor_FunctionalACM_t;
 308
 309                 /** \brief CDC class-specific Functional Union Descriptor (LUFA naming conventions).
 310                  *
 311                  *  Type define for a CDC class-specific functional Union descriptor. This indicates to the host that specific
 312                  *  CDC control and data interfaces are related. See the CDC class specification for more details.
 313                  *
 314                  *  \see \ref USB_CDC_StdDescriptor_FunctionalUnion_t for the version of this type with standard element names.
 315                  */
 316                 typedef struct
 317                 {
 318                         USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length. */
 319                         uint8_t                 Subtype; /**< Sub type value used to distinguish between CDC class-specific descriptors,
 320                                                           *   must be \ref CDC_DSUBTYPE_CSInterface_Union.
 321                                                           */
 322                         uint8_t                 MasterInterfaceNumber; /**< Interface number of the CDC Control interface. */
 323                         uint8_t                 SlaveInterfaceNumber; /**< Interface number of the CDC Data interface. */
 324                 } ATTR_PACKED USB_CDC_Descriptor_FunctionalUnion_t;
 325
 326                 /** \brief CDC class-specific Functional Union Descriptor (USB-IF naming conventions).
 327                  *
 328                  *  Type define for a CDC class-specific functional Union descriptor. This indicates to the host that specific
 329                  *  CDC control and data interfaces are related. See the CDC class specification for more details.
 330                  *
 331                  *  \see \ref USB_CDC_Descriptor_FunctionalUnion_t for the version of this type with non-standard LUFA specific
 332                  *       element names.
 333                  */
 334                 typedef struct
 335                 {
 336                         uint8_t bFunctionLength; /**< Size of the descriptor, in bytes. */
 337                         uint8_t bDescriptorType; /**< Type of the descriptor, either a value in \ref USB_DescriptorTypes_t or a value
 338                                                   *   given by the specific class.
 339                                                   */
 340                         uint8_t bDescriptorSubType; /**< Sub type value used to distinguish between CDC class-specific descriptors,
 341                                                      *   must be \ref CDC_DSUBTYPE_CSInterface_Union.
 342                                                      */
 343                         uint8_t bMasterInterface; /**< Interface number of the CDC Control interface. */
 344                         uint8_t bSlaveInterface0; /**< Interface number of the CDC Data interface. */
 345                 } ATTR_PACKED USB_CDC_StdDescriptor_FunctionalUnion_t;
 346
 347                 /** \brief CDC Virtual Serial Port Line Encoding Settings Structure.
 348                  *
 349                  *  Type define for a CDC Line Encoding structure, used to hold the various encoding parameters for a virtual
 350                  *  serial port.
 351                  */
 352                 typedef struct
 353                 {
 354                         uint32_t BaudRateBPS; /**< Baud rate of the virtual serial port, in bits per second. */
 355                         uint8_t  CharFormat; /**< Character format of the virtual serial port, a value from the
 356                                                                   *   \ref CDC_LineEncodingFormats_t enum.
 357                                                                   */
 358                         uint8_t  ParityType; /**< Parity setting of the virtual serial port, a value from the
 359                                                                   *   \ref CDC_LineEncodingParity_t enum.
 360                                                                   */
 361                         uint8_t  DataBits; /**< Bits of data per character of the virtual serial port. */
 362                 } ATTR_PACKED CDC_LineEncoding_t;
 363
 364         /* Disable C linkage for C++ Compilers: */
 365                 #if defined(__cplusplus)
 366                         }
 367                 #endif
 368
 369 #endif
 370
 371 /** @} */
 372