LUFA/Drivers/USB/Core/XMEGA/Device_XMEGA.h

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2018.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6            www.lufa-lib.org
   7 */
   8
   9 /*
  10   Copyright 2018  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 disclaims 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                 #if (defined(USE_FLASH_DESCRIPTORS) && defined(USE_EEPROM_DESCRIPTORS))
  73                         #error USE_FLASH_DESCRIPTORS and USE_EEPROM_DESCRIPTORS are mutually exclusive.
  74                 #endif
  75
  76                 #if (defined(USE_FLASH_DESCRIPTORS) && defined(USE_RAM_DESCRIPTORS))
  77                         #error USE_FLASH_DESCRIPTORS and USE_RAM_DESCRIPTORS are mutually exclusive.
  78                 #endif
  79
  80         /* Public Interface - May be used in end-application: */
  81                 /* Macros: */
  82                         /** \name USB Device Mode Option Masks */
  83                         //@{
  84                         /** Mask for the Options parameter of the \ref USB_Init() function. This indicates that the
  85                          *  USB interface should be initialized in low speed (1.5Mb/s) mode.
  86                          *
  87                          *  \note Low Speed mode is not available on all USB AVR models.
  88                          *        \n
  89                          *
  90                          *  \note Restrictions apply on the number, size and type of endpoints which can be used
  91                          *        when running in low speed mode - refer to the USB 2.0 specification.
  92                          */
  93                         #define USB_DEVICE_OPT_LOWSPEED        (1 << 0)
  94
  95                         #if (F_USB > 6000000)
  96                                 /** Mask for the Options parameter of the \ref USB_Init() function. This indicates that the
  97                                  *  USB interface should be initialized in full speed (12Mb/s) mode.
  98                                  */
  99                                 #define USB_DEVICE_OPT_FULLSPEED   (0 << 0)
 100                         #endif
 101                         //@}
 102
 103                         #if (!defined(NO_INTERNAL_SERIAL) || defined(__DOXYGEN__))
 104                                 /** String descriptor index for the device's unique serial number string descriptor within the device.
 105                                  *  This unique serial number is used by the host to associate resources to the device (such as drivers or COM port
 106                                  *  number allocations) to a device regardless of the port it is plugged in to on the host. Some microcontrollers contain
 107                                  *  a unique serial number internally, and setting the device descriptors serial number string index to this value
 108                                  *  will cause it to use the internal serial number.
 109                                  *
 110                                  *  On unsupported devices, this will evaluate to \ref NO_DESCRIPTOR and so will force the host to create a pseudo-serial
 111                                  *  number for the device.
 112                                  */
 113                                 #define USE_INTERNAL_SERIAL            0xDC
 114
 115                                 /** Length of the device's unique internal serial number, in bits, if present on the selected microcontroller
 116                                  *  model.
 117                                  */
 118                                 #define INTERNAL_SERIAL_LENGTH_BITS    (8 * (1 + (offsetof(NVM_PROD_SIGNATURES_t, COORDY1) - offsetof(NVM_PROD_SIGNATURES_t, LOTNUM0))))
 119
 120                                 /** Start address of the internal serial number, in the appropriate address space, if present on the selected microcontroller
 121                                  *  model.
 122                                  */
 123                                 #define INTERNAL_SERIAL_START_ADDRESS  offsetof(NVM_PROD_SIGNATURES_t, LOTNUM0)
 124                         #else
 125                                 #define USE_INTERNAL_SERIAL            NO_DESCRIPTOR
 126
 127                                 #define INTERNAL_SERIAL_LENGTH_BITS    0
 128                                 #define INTERNAL_SERIAL_START_ADDRESS  0
 129                         #endif
 130
 131                 /* Function Prototypes: */
 132                         /** Sends a Remote Wakeup request to the host. This signals to the host that the device should
 133                          *  be taken out of suspended mode, and communications should resume.
 134                          *
 135                          *  Typically, this is implemented so that HID devices (mice, keyboards, etc.) can wake up the
 136                          *  host computer when the host has suspended all USB devices to enter a low power state.
 137                          *
 138                          *  \note This function should only be used if the device has indicated to the host that it
 139                          *        supports the Remote Wakeup feature in the device descriptors, and should only be
 140                          *        issued if the host is currently allowing remote wakeup events from the device (i.e.,
 141                          *        the \ref USB_Device_RemoteWakeupEnabled flag is set). When the \c NO_DEVICE_REMOTE_WAKEUP
 142                          *        compile time option is used, this function is unavailable.
 143                          *        \n\n
 144                          *
 145                          *  \note The USB clock must be running for this function to operate. If the stack is initialized with
 146                          *        the \ref USB_OPT_MANUAL_PLL option enabled, the user must ensure that the PLL is running
 147                          *        before attempting to call this function.
 148                          *
 149                          *  \see \ref Group_StdDescriptors for more information on the RMWAKEUP feature and device descriptors.
 150                          */
 151                         void USB_Device_SendRemoteWakeup(void);
 152
 153                 /* Inline Functions: */
 154                         /** Returns the current USB frame number, when in device mode. Every millisecond the USB bus is active (i.e. enumerated to a host)
 155                          *  the frame number is incremented by one.
 156                          *
 157                          *  \return Current USB frame number from the USB controller.
 158                          */
 159                         static inline uint16_t USB_Device_GetFrameNumber(void) ATTR_ALWAYS_INLINE ATTR_WARN_UNUSED_RESULT;
 160                         static inline uint16_t USB_Device_GetFrameNumber(void)
 161                         {
 162                                 return ((USB_EndpointTable_t*)USB.EPPTR)->FrameNum;
 163                         }
 164
 165                         #if !defined(NO_SOF_EVENTS)
 166                         /** Enables the device mode Start Of Frame events. When enabled, this causes the
 167                          *  \ref EVENT_USB_Device_StartOfFrame() event to fire once per millisecond, synchronized to the USB bus,
 168                          *  at the start of each USB frame when enumerated in device mode.
 169                          *
 170                          *  \note This function is not available when the \c NO_SOF_EVENTS compile time token is defined.
 171                          */
 172                         static inline void USB_Device_EnableSOFEvents(void) ATTR_ALWAYS_INLINE;
 173                         static inline void USB_Device_EnableSOFEvents(void)
 174                         {
 175                                 USB.INTCTRLA |=  USB_SOFIE_bm;
 176                         }
 177
 178                         /** Disables the device mode Start Of Frame events. When disabled, this stops the firing of the
 179                          *  \ref EVENT_USB_Device_StartOfFrame() event when enumerated in device mode.
 180                          *
 181                          *  \note This function is not available when the \c NO_SOF_EVENTS compile time token is defined.
 182                          */
 183                         static inline void USB_Device_DisableSOFEvents(void) ATTR_ALWAYS_INLINE;
 184                         static inline void USB_Device_DisableSOFEvents(void)
 185                         {
 186                                 USB.INTCTRLA &= ~USB_SOFIE_bm;
 187                         }
 188                         #endif
 189
 190         /* Private Interface - For use in library only: */
 191         #if !defined(__DOXYGEN__)
 192                 /* Inline Functions: */
 193                         static inline void USB_Device_SetLowSpeed(void) ATTR_ALWAYS_INLINE;
 194                         static inline void USB_Device_SetLowSpeed(void)
 195                         {
 196                                 USB.CTRLA &= ~USB_SPEED_bm;
 197                         }
 198
 199                         static inline void USB_Device_SetFullSpeed(void) ATTR_ALWAYS_INLINE;
 200                         static inline void USB_Device_SetFullSpeed(void)
 201                         {
 202                                 USB.CTRLA |=  USB_SPEED_bm;
 203                         }
 204
 205                         static inline void USB_Device_SetDeviceAddress(const uint8_t Address) ATTR_ALWAYS_INLINE;
 206                         static inline void USB_Device_SetDeviceAddress(const uint8_t Address)
 207                         {
 208                                 (void)Address;
 209
 210                                 /* No implementation for XMEGA architecture */
 211                         }
 212
 213                         static inline void USB_Device_EnableDeviceAddress(const uint8_t Address) ATTR_ALWAYS_INLINE;
 214                         static inline void USB_Device_EnableDeviceAddress(const uint8_t Address)
 215                         {
 216                                 USB.ADDR = Address;
 217                         }
 218
 219                         static inline bool USB_Device_IsAddressSet(void) ATTR_ALWAYS_INLINE ATTR_WARN_UNUSED_RESULT;
 220                         static inline bool USB_Device_IsAddressSet(void)
 221                         {
 222                                 return ((USB.ADDR != 0) ? true : false);
 223                         }
 224
 225                         static inline void USB_Device_GetSerialString(uint16_t* const UnicodeString) ATTR_NON_NULL_PTR_ARG(1);
 226                         static inline void USB_Device_GetSerialString(uint16_t* const UnicodeString)
 227                         {
 228                                 uint_reg_t CurrentGlobalInt = GetGlobalInterruptMask();
 229                                 GlobalInterruptDisable();
 230
 231                                 uint8_t SigReadAddress = INTERNAL_SERIAL_START_ADDRESS;
 232
 233                                 for (uint8_t SerialCharNum = 0; SerialCharNum < (INTERNAL_SERIAL_LENGTH_BITS / 4); SerialCharNum++)
 234                                 {
 235                                         uint8_t SerialByte;
 236
 237                                         NVM.CMD    = NVM_CMD_READ_CALIB_ROW_gc;
 238                                         SerialByte = pgm_read_byte(SigReadAddress);
 239                                         NVM.CMD    = 0;
 240
 241                                         if (SerialCharNum & 0x01)
 242                                         {
 243                                                 SerialByte >>= 4;
 244                                                 SigReadAddress++;
 245                                         }
 246
 247                                         SerialByte &= 0x0F;
 248
 249                                         UnicodeString[SerialCharNum] = cpu_to_le16((SerialByte >= 10) ?
 250                                                                                                                            (('A' - 10) + SerialByte) : ('0' + SerialByte));
 251                                 }
 252
 253                                 SetGlobalInterruptMask(CurrentGlobalInt);
 254                         }
 255
 256         #endif
 257
 258         /* Disable C linkage for C++ Compilers: */
 259                 #if defined(__cplusplus)
 260                         }
 261                 #endif
 262
 263 #endif
 264
 265 /** @} */
 266