Demos/Device/ClassDriver/VirtualSerialMassStorage/VirtualSerialMassStorage.c

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2013.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6            www.lufa-lib.org
   7 */
   8
   9 /*
  10   Copyright 2013  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  *
  33  *  Main source file for the VirtualSerialMassStorage demo. This file contains the main tasks of
  34  *  the demo and is responsible for the initial application hardware configuration.
  35  */
  36
  37 #include "VirtualSerialMassStorage.h"
  38
  39 /** LUFA CDC Class driver interface configuration and state information. This structure is
  40  *  passed to all CDC Class driver functions, so that multiple instances of the same class
  41  *  within a device can be differentiated from one another.
  42  */
  43 USB_ClassInfo_CDC_Device_t VirtualSerial_CDC_Interface =
  44         {
  45                 .Config =
  46                         {
  47                                 .ControlInterfaceNumber         = 0,
  48                                 .DataINEndpoint                 =
  49                                         {
  50                                                 .Address                = CDC_TX_EPADDR,
  51                                                 .Size                   = CDC_TXRX_EPSIZE,
  52                                                 .Banks                  = 1,
  53                                         },
  54                                 .DataOUTEndpoint                =
  55                                         {
  56                                                 .Address                = CDC_RX_EPADDR,
  57                                                 .Size                   = CDC_TXRX_EPSIZE,
  58                                                 .Banks                  = 1,
  59                                         },
  60                                 .NotificationEndpoint           =
  61                                         {
  62                                                 .Address                = CDC_NOTIFICATION_EPADDR,
  63                                                 .Size                   = CDC_NOTIFICATION_EPSIZE,
  64                                                 .Banks                  = 1,
  65                                         },
  66                         },
  67         };
  68
  69 /** LUFA Mass Storage Class driver interface configuration and state information. This structure is
  70  *  passed to all Mass Storage Class driver functions, so that multiple instances of the same class
  71  *  within a device can be differentiated from one another.
  72  */
  73 USB_ClassInfo_MS_Device_t Disk_MS_Interface =
  74         {
  75                 .Config =
  76                         {
  77                                 .InterfaceNumber                = 2,
  78                                 .DataINEndpoint                 =
  79                                         {
  80                                                 .Address                = MASS_STORAGE_IN_EPADDR,
  81                                                 .Size                   = MASS_STORAGE_IO_EPSIZE,
  82                                                 .Banks                  = 1,
  83                                         },
  84                                 .DataOUTEndpoint                =
  85                                         {
  86                                                 .Address                = MASS_STORAGE_OUT_EPADDR,
  87                                                 .Size                   = MASS_STORAGE_IO_EPSIZE,
  88                                                 .Banks                  = 1,
  89                                         },
  90                                 .TotalLUNs                      = TOTAL_LUNS,
  91                         },
  92         };
  93
  94 /** Standard file stream for the CDC interface when set up, so that the virtual CDC COM port can be
  95  *  used like any regular character stream in the C APIs
  96  */
  97 static FILE USBSerialStream;
  98
  99
 100 /** Main program entry point. This routine contains the overall program flow, including initial
 101  *  setup of all components and the main program loop.
 102  */
 103 int main(void)
 104 {
 105         SetupHardware();
 106
 107         /* Create a regular character stream for the interface so that it can be used with the stdio.h functions */
 108         CDC_Device_CreateStream(&VirtualSerial_CDC_Interface, &USBSerialStream);
 109
 110         LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
 111         GlobalInterruptEnable();
 112
 113         for (;;)
 114         {
 115                 CheckJoystickMovement();
 116
 117                 /* Must throw away unused bytes from the host, or it will lock up while waiting for the device */
 118                 CDC_Device_ReceiveByte(&VirtualSerial_CDC_Interface);
 119
 120                 CDC_Device_USBTask(&VirtualSerial_CDC_Interface);
 121                 MS_Device_USBTask(&Disk_MS_Interface);
 122                 USB_USBTask();
 123         }
 124 }
 125
 126 /** Configures the board hardware and chip peripherals for the demo's functionality. */
 127 void SetupHardware(void)
 128 {
 129         /* Disable watchdog if enabled by bootloader/fuses */
 130         MCUSR &= ~(1 << WDRF);
 131         wdt_disable();
 132
 133         /* Disable clock division */
 134         clock_prescale_set(clock_div_1);
 135
 136         /* Hardware Initialization */
 137         LEDs_Init();
 138         Joystick_Init();
 139         SPI_Init(SPI_SPEED_FCPU_DIV_2 | SPI_ORDER_MSB_FIRST | SPI_SCK_LEAD_FALLING | SPI_SAMPLE_TRAILING | SPI_MODE_MASTER);
 140         Dataflash_Init();
 141         USB_Init();
 142
 143         /* Check if the Dataflash is working, abort if not */
 144         if (!(DataflashManager_CheckDataflashOperation()))
 145         {
 146                 LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 147                 for(;;);
 148         }
 149
 150         /* Clear Dataflash sector protections, if enabled */
 151         DataflashManager_ResetDataflashProtections();
 152 }
 153
 154 /** Checks for changes in the position of the board joystick, sending strings to the host upon each change. */
 155 void CheckJoystickMovement(void)
 156 {
 157         uint8_t     JoyStatus_LCL = Joystick_GetStatus();
 158         char*       ReportString  = NULL;
 159         static bool ActionSent    = false;
 160
 161         if (JoyStatus_LCL & JOY_UP)
 162           ReportString = "Joystick Up\r\n";
 163         else if (JoyStatus_LCL & JOY_DOWN)
 164           ReportString = "Joystick Down\r\n";
 165         else if (JoyStatus_LCL & JOY_LEFT)
 166           ReportString = "Joystick Left\r\n";
 167         else if (JoyStatus_LCL & JOY_RIGHT)
 168           ReportString = "Joystick Right\r\n";
 169         else if (JoyStatus_LCL & JOY_PRESS)
 170           ReportString = "Joystick Pressed\r\n";
 171         else
 172           ActionSent = false;
 173
 174         if ((ReportString != NULL) && (ActionSent == false))
 175         {
 176                 ActionSent = true;
 177
 178                 /* Write the string to the virtual COM port via the created character stream */
 179                 fputs(ReportString, &USBSerialStream);
 180
 181                 /* Alternatively, without the stream: */
 182                 // CDC_Device_SendString(&VirtualSerial_CDC_Interface, ReportString);
 183         }
 184 }
 185
 186 /** Event handler for the library USB Connection event. */
 187 void EVENT_USB_Device_Connect(void)
 188 {
 189         LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
 190 }
 191
 192 /** Event handler for the library USB Disconnection event. */
 193 void EVENT_USB_Device_Disconnect(void)
 194 {
 195         LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
 196 }
 197
 198 /** Event handler for the library USB Configuration Changed event. */
 199 void EVENT_USB_Device_ConfigurationChanged(void)
 200 {
 201         bool ConfigSuccess = true;
 202
 203         ConfigSuccess &= CDC_Device_ConfigureEndpoints(&VirtualSerial_CDC_Interface);
 204         ConfigSuccess &= MS_Device_ConfigureEndpoints(&Disk_MS_Interface);
 205
 206         LEDs_SetAllLEDs(ConfigSuccess ? LEDMASK_USB_READY : LEDMASK_USB_ERROR);
 207 }
 208
 209 /** Event handler for the library USB Control Request reception event. */
 210 void EVENT_USB_Device_ControlRequest(void)
 211 {
 212         CDC_Device_ProcessControlRequest(&VirtualSerial_CDC_Interface);
 213         MS_Device_ProcessControlRequest(&Disk_MS_Interface);
 214 }
 215
 216 /** Mass Storage class driver callback function the reception of SCSI commands from the host, which must be processed.
 217  *
 218  *  \param[in] MSInterfaceInfo  Pointer to the Mass Storage class interface configuration structure being referenced
 219  */
 220 bool CALLBACK_MS_Device_SCSICommandReceived(USB_ClassInfo_MS_Device_t* const MSInterfaceInfo)
 221 {
 222         bool CommandSuccess;
 223
 224         LEDs_SetAllLEDs(LEDMASK_USB_BUSY);
 225         CommandSuccess = SCSI_DecodeSCSICommand(MSInterfaceInfo);
 226         LEDs_SetAllLEDs(LEDMASK_USB_READY);
 227
 228         return CommandSuccess;
 229 }
 230