Demos/Device/USBtoSerial/USBtoSerial.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 /** \file
  32  *
  33  *  Header file for USBtoSerial.c.
  34  */
  35
  36 #ifndef _USB_SERIAL_H_
  37 #define _USB_SERIAL_H_
  38
  39         /* Includes: */
  40                 #include <avr/io.h>
  41                 #include <avr/wdt.h>
  42                 #include <avr/interrupt.h>
  43                 #include <avr/power.h>
  44
  45                 #include "Descriptors.h"
  46                 #include "RingBuff.h"
  47
  48                 #include <LUFA/Version.h>                         // Library Version Information
  49                 #include <LUFA/Drivers/USB/USB.h>                 // USB Functionality
  50                 #include <LUFA/Drivers/Peripheral/Serial.h>       // USART driver
  51                 #include <LUFA/Drivers/Board/LEDs.h>              // LEDs driver
  52                 #include <LUFA/Scheduler/Scheduler.h>             // Simple scheduler for task management
  53
  54         /* Macros: */
  55                 /** CDC Class specific request to get the current virtual serial port configuration settings. */
  56                 #define REQ_GetLineEncoding          0x21
  57
  58                 /** CDC Class specific request to set the current virtual serial port configuration settings. */
  59                 #define REQ_SetLineEncoding          0x20
  60
  61                 /** CDC Class specific request to set the current virtual serial port handshake line states. */
  62                 #define REQ_SetControlLineState      0x22
  63
  64                 /** Notification type constant for a change in the virtual serial port handshake line states, for
  65                  *  use with a USB_Notification_Header_t notification structure when sent to the host via the CDC
  66                  *  notification endpoint.
  67                  */
  68                 #define NOTIF_SerialState            0x20
  69
  70                 /** Mask for the DTR handshake line for use with the REQ_SetControlLineState class specific request
  71                  *  from the host, to indicate that the DTR line state should be high.
  72                  */
  73                 #define CONTROL_LINE_OUT_DTR         (1 << 0)
  74
  75                 /** Mask for the RTS handshake line for use with the REQ_SetControlLineState class specific request
  76                  *  from the host, to indicate that theRTS line state should be high.
  77                  */
  78                 #define CONTROL_LINE_OUT_RTS         (1 << 1)
  79
  80                 /** Mask for the DCD handshake line for use with the a NOTIF_SerialState class specific notification
  81                  *  from the device to the host, to indicate that the DCD line state is currently high.
  82                  */
  83                 #define CONTROL_LINE_IN_DCD          (1 << 0)
  84
  85                 /** Mask for the DSR handshake line for use with the a NOTIF_SerialState class specific notification
  86                  *  from the device to the host, to indicate that the DSR line state is currently high.
  87                  */
  88                 #define CONTROL_LINE_IN_DSR          (1 << 1)
  89
  90                 /** Mask for the BREAK handshake line for use with the a NOTIF_SerialState class specific notification
  91                  *  from the device to the host, to indicate that the BREAK line state is currently high.
  92                  */
  93                 #define CONTROL_LINE_IN_BREAK        (1 << 2)
  94
  95                 /** Mask for the RING handshake line for use with the a NOTIF_SerialState class specific notification
  96                  *  from the device to the host, to indicate that the RING line state is currently high.
  97                  */
  98                 #define CONTROL_LINE_IN_RING         (1 << 3)
  99
 100                 /** Mask for use with the a NOTIF_SerialState class specific notification from the device to the host,
 101                  *  to indicate that a framing error has occurred on the virtual serial port.
 102                  */
 103                 #define CONTROL_LINE_IN_FRAMEERROR   (1 << 4)
 104
 105                 /** Mask for use with the a NOTIF_SerialState class specific notification from the device to the host,
 106                  *  to indicate that a parity error has occurred on the virtual serial port.
 107                  */
 108                 #define CONTROL_LINE_IN_PARITYERROR  (1 << 5)
 109
 110                 /** Mask for use with the a NOTIF_SerialState class specific notification from the device to the host,
 111                  *  to indicate that a data overrun error has occurred on the virtual serial port.
 112                  */
 113                 #define CONTROL_LINE_IN_OVERRUNERROR (1 << 6)
 114
 115         /* Type Defines: */
 116                 /** Type define for the virtual serial port line encoding settings, for storing the current USART configuration
 117                  *  as set by the host via a class specific request.
 118                  */
 119                 typedef struct
 120                 {
 121                         uint32_t BaudRateBPS; /**< Baud rate of the virtual serial port, in bits per second */
 122                         uint8_t  CharFormat; /**< Character format of the virtual serial port, a value from the
 123                                               *   CDCDevice_CDC_LineCodingFormats_t enum
 124                                               */
 125                         uint8_t  ParityType; /**< Parity setting of the virtual serial port, a value from the
 126                                               *   CDCDevice_LineCodingParity_t enum
 127                                               */
 128                         uint8_t  DataBits; /**< Bits of data per character of the virtual serial port */
 129                 } CDC_Line_Coding_t;
 130
 131                 /** Type define for a CDC notification, sent to the host via the CDC notification endpoint to indicate a
 132                  *  change in the device state asynchronously.
 133                  */
 134                 typedef struct
 135                 {
 136                         uint8_t  NotificationType; /**< Notification type, a mask of REQDIR_*, REQTYPE_* and REQREC_* constants
 137                                                     *   from the library StdRequestType.h header
 138                                                     */
 139                         uint8_t  Notification; /**< Notification value, a NOTIF_* constant */
 140                         uint16_t wValue; /**< Notification wValue, notification-specific */
 141                         uint16_t wIndex; /**< Notification wIndex, notification-specific */
 142                         uint16_t wLength; /**< Notification wLength, notification-specific */
 143                 } USB_Notification_Header_t;
 144
 145         /* Enums: */
 146                 /** Enum for the possible line encoding formats of a virtual serial port. */
 147                 enum CDCDevice_CDC_LineCodingFormats_t
 148                 {
 149                         OneStopBit          = 0, /**< Each frame contains one stop bit */
 150                         OneAndAHalfStopBits = 1, /**< Each frame contains one and a half stop bits */
 151                         TwoStopBits         = 2, /**< Each frame contains two stop bits */
 152                 };
 153
 154                 /** Enum for the possible line encoding parity settings of a virtual serial port. */
 155                 enum CDCDevice_LineCodingParity_t
 156                 {
 157                         Parity_None         = 0, /**< No parity bit mode on each frame */
 158                         Parity_Odd          = 1, /**< Odd parity bit mode on each frame */
 159                         Parity_Even         = 2, /**< Even parity bit mode on each frame */
 160                         Parity_Mark         = 3, /**< Mark parity bit mode on each frame */
 161                         Parity_Space        = 4, /**< Space parity bit mode on each frame */
 162                 };
 163
 164                 /** Enum for the possible status codes for passing to the UpdateStatus() function. */
 165                 enum USBtoSerial_StatusCodes_t
 166                 {
 167                         Status_USBNotReady    = 0, /**< USB is not ready (disconnected from a USB host) */
 168                         Status_USBEnumerating = 1, /**< USB interface is enumerating */
 169                         Status_USBReady       = 2, /**< USB interface is connected and ready */
 170                 };
 171
 172         /* Tasks: */
 173                 TASK(CDC_Task);
 174
 175         /* Function Prototypes: */
 176                 void EVENT_USB_Connect(void);
 177                 void EVENT_USB_Disconnect(void);
 178                 void EVENT_USB_ConfigurationChanged(void);
 179                 void EVENT_USB_UnhandledControlPacket(void);
 180
 181                 void ReconfigureUSART(void);
 182                 void UpdateStatus(uint8_t CurrentStatus);
 183
 184 #endif