LUFA/Drivers/USB/Core/XMEGA/Device_XMEGA.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 USB Device definitions for the AVR XMEGA microcontrollers.
  33  *  \copydetails Group_Device_XMEGA
  34  *
  35  *  \note This file should not be included directly. It is automatically included as needed by the USB driver
  36  *        dispatch header located in LUFA/Drivers/USB/USB.h.
  37  */
  38
  39 /** \ingroup Group_Device
  40  *  \defgroup Group_Device_XMEGA Device Management (XMEGA)
  41  *  \brief USB Device definitions for the AVR XMEGA microcontrollers.
  42  *
  43  *  Architecture specific USB Device definitions for the Atmel AVR XMEGA microcontrollers.
  44  *
  45  *  @{
  46  */
  47
  48 #ifndef __USBDEVICE_XMEGA_H__
  49 #define __USBDEVICE_XMEGA_H__
  50
  51         /* Includes: */
  52                 #include "../../../../Common/Common.h"
  53                 #include "../USBController.h"
  54                 #include "../StdDescriptors.h"
  55                 #include "../USBInterrupt.h"
  56                 #include "../Endpoint.h"
  57
  58         /* Enable C linkage for C++ Compilers: */
  59                 #if defined(__cplusplus)
  60                         extern "C" {
  61                 #endif
  62
  63         /* Preprocessor Checks: */
  64                 #if !defined(__INCLUDE_FROM_USB_DRIVER)
  65                         #error Do not include this file directly. Include LUFA/Drivers/USB/USB.h instead.
  66                 #endif
  67
  68                 #if (defined(USE_RAM_DESCRIPTORS) && defined(USE_EEPROM_DESCRIPTORS))
  69                         #error USE_RAM_DESCRIPTORS and USE_EEPROM_DESCRIPTORS are mutually exclusive.
  70                 #endif
  71
  72         /* Public Interface - May be used in end-application: */
  73                 /* Macros: */
  74                         /** \name USB Device Mode Option Masks */
  75                         //@{
  76                         /** Mask for the Options parameter of the \ref USB_Init() function. This indicates that the
  77                          *  USB interface should be initialized in low speed (1.5Mb/s) mode.
  78                          *
  79                          *  \note Low Speed mode is not available on all USB AVR models.
  80                          *        \n
  81                          *
  82                          *  \note Restrictions apply on the number, size and type of endpoints which can be used
  83                          *        when running in low speed mode - refer to the USB 2.0 specification.
  84                          */
  85                         #define USB_DEVICE_OPT_LOWSPEED        (1 << 0)
  86
  87                         /** Mask for the Options parameter of the \ref USB_Init() function. This indicates that the
  88                          *  USB interface should be initialized in full speed (12Mb/s) mode.
  89                          */
  90                         #define USB_DEVICE_OPT_FULLSPEED       (0 << 0)
  91                         //@}
  92
  93                         /** String descriptor index for the device's unique serial number string descriptor within the device.
  94                          *  This unique serial number is used by the host to associate resources to the device (such as drivers or COM port
  95                          *  number allocations) to a device regardless of the port it is plugged in to on the host. Some microcontrollers contain
  96                          *  a unique serial number internally, and setting the device descriptors serial number string index to this value
  97                          *  will cause it to use the internal serial number.
  98                          *
  99                          *  On unsupported devices, this will evaluate to \ref NO_DESCRIPTOR and so will force the host to create a pseudo-serial
 100                          *  number for the device.
 101                          */
 102                         #define USE_INTERNAL_SERIAL            0xDC
 103
 104                         /** Length of the device's unique internal serial number, in bits, if present on the selected microcontroller
 105                          *  model.
 106                          */
 107                         #define INTERNAL_SERIAL_LENGTH_BITS    (8 * (1 + (offsetof(NVM_PROD_SIGNATURES_t, COORDY1) - offsetof(NVM_PROD_SIGNATURES_t, LOTNUM0))))
 108
 109                         /** Start address of the internal serial number, in the appropriate address space, if present on the selected microcontroller
 110                          *  model.
 111                          */
 112                         #define INTERNAL_SERIAL_START_ADDRESS  offsetof(NVM_PROD_SIGNATURES_t, LOTNUM0)
 113
 114                 /* Function Prototypes: */
 115                         /** Sends a Remote Wakeup request to the host. This signals to the host that the device should
 116                          *  be taken out of suspended mode, and communications should resume.
 117                          *
 118                          *  Typically, this is implemented so that HID devices (mice, keyboards, etc.) can wake up the
 119                          *  host computer when the host has suspended all USB devices to enter a low power state.
 120                          *
 121                          *  \note This macro should only be used if the device has indicated to the host that it
 122                          *        supports the Remote Wakeup feature in the device descriptors, and should only be
 123                          *        issued if the host is currently allowing remote wakeup events from the device (i.e.,
 124                          *        the \ref USB_Device_RemoteWakeupEnabled flag is set). When the \c NO_DEVICE_REMOTE_WAKEUP
 125                          *        compile time option is used, this macro is unavailable.
 126                          *        \n\n
 127                          *
 128                          *  \note The USB clock must be running for this function to operate. If the stack is initialized with
 129                          *        the \ref USB_OPT_MANUAL_PLL option enabled, the user must ensure that the PLL is running
 130                          *        before attempting to call this function.
 131                          *
 132                          *  \see \ref Group_StdDescriptors for more information on the RMWAKEUP feature and device descriptors.
 133                          */
 134                         void USB_Device_SendRemoteWakeup(void);
 135
 136                 /* Inline Functions: */
 137                         /** Returns the current USB frame number, when in device mode. Every millisecond the USB bus is active (i.e. enumerated to a host)
 138                          *  the frame number is incremented by one.
 139                          */
 140                         static inline uint16_t USB_Device_GetFrameNumber(void) ATTR_ALWAYS_INLINE ATTR_WARN_UNUSED_RESULT;
 141                         static inline uint16_t USB_Device_GetFrameNumber(void)
 142                         {
 143                                 return (((uint16_t)USB_EndpointTable.FRAMENUMH << 8) | USB_EndpointTable.FRAMENUML);
 144                         }
 145
 146                         #if !defined(NO_SOF_EVENTS)
 147                         /** Enables the device mode Start Of Frame events. When enabled, this causes the
 148                          *  \ref EVENT_USB_Device_StartOfFrame() event to fire once per millisecond, synchronized to the USB bus,
 149                          *  at the start of each USB frame when enumerated in device mode.
 150                          *
 151                          *  \note Not available when the \c NO_SOF_EVENTS compile time token is defined.
 152                          */
 153                         static inline void USB_Device_EnableSOFEvents(void) ATTR_ALWAYS_INLINE;
 154                         static inline void USB_Device_EnableSOFEvents(void)
 155                         {
 156                                 USB.INTCTRLA |=  USB_SOFIE_bm;
 157                         }
 158
 159                         /** Disables the device mode Start Of Frame events. When disabled, this stops the firing of the
 160                          *  \ref EVENT_USB_Device_StartOfFrame() event when enumerated in device mode.
 161                          *
 162                          *  \note Not available when the \c NO_SOF_EVENTS compile time token is defined.
 163                          */
 164                         static inline void USB_Device_DisableSOFEvents(void) ATTR_ALWAYS_INLINE;
 165                         static inline void USB_Device_DisableSOFEvents(void)
 166                         {
 167                                 USB.INTCTRLA &= ~USB_SOFIE_bm;
 168                         }
 169                         #endif
 170
 171         /* Private Interface - For use in library only: */
 172         #if !defined(__DOXYGEN__)
 173                 /* Inline Functions: */
 174                         static inline void USB_Device_SetLowSpeed(void) ATTR_ALWAYS_INLINE;
 175                         static inline void USB_Device_SetLowSpeed(void)
 176                         {
 177                                 USB.CTRLA &= ~USB_SPEED_bm;
 178                         }
 179
 180                         static inline void USB_Device_SetFullSpeed(void) ATTR_ALWAYS_INLINE;
 181                         static inline void USB_Device_SetFullSpeed(void)
 182                         {
 183                                 USB.CTRLA |=  USB_SPEED_bm;
 184                         }
 185
 186                         static inline void USB_Device_SetDeviceAddress(const uint8_t Address) ATTR_ALWAYS_INLINE;
 187                         static inline void USB_Device_SetDeviceAddress(const uint8_t Address)
 188                         {
 189                                 USB.ADDR = Address;
 190                         }
 191
 192                         static inline bool USB_Device_IsAddressSet(void) ATTR_ALWAYS_INLINE ATTR_WARN_UNUSED_RESULT;
 193                         static inline bool USB_Device_IsAddressSet(void)
 194                         {
 195                                 return ((USB.ADDR != 0) ? true : false);
 196                         }
 197
 198                         static inline void USB_Device_GetSerialString(uint16_t* const UnicodeString) ATTR_NON_NULL_PTR_ARG(1);
 199                         static inline void USB_Device_GetSerialString(uint16_t* const UnicodeString)
 200                         {
 201                                 uint_reg_t CurrentGlobalInt = GetGlobalInterruptMask();
 202                                 GlobalInterruptDisable();
 203
 204                                 uint8_t SigReadAddress = INTERNAL_SERIAL_START_ADDRESS;
 205
 206                                 for (uint8_t SerialCharNum = 0; SerialCharNum < (INTERNAL_SERIAL_LENGTH_BITS / 4); SerialCharNum++)
 207                                 {
 208                                         uint8_t SerialByte;
 209
 210                                         NVM.CMD    = NVM_CMD_READ_CALIB_ROW_gc;
 211                                         SerialByte = pgm_read_byte(SigReadAddress);
 212
 213                                         if (SerialCharNum & 0x01)
 214                                         {
 215                                                 SerialByte >>= 4;
 216                                                 SigReadAddress++;
 217                                         }
 218
 219                                         SerialByte &= 0x0F;
 220
 221                                         UnicodeString[SerialCharNum] = cpu_to_le16((SerialByte >= 10) ?
 222                                                                                                                            (('A' - 10) + SerialByte) : ('0' + SerialByte));
 223                                 }
 224
 225                                 SetGlobalInterruptMask(CurrentGlobalInt);
 226                         }
 227
 228         #endif
 229
 230         /* Disable C linkage for C++ Compilers: */
 231                 #if defined(__cplusplus)
 232                         }
 233                 #endif
 234
 235 #endif
 236
 237 /** @} */
 238