Demos/Device/ClassDriver/MassStorage/MassStorage.c

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2012.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6            www.lufa-lib.org
   7 */
   8
   9 /*
  10   Copyright 2012  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  *
  33  *  Main source file for the MassStorage demo. This file contains the main tasks of
  34  *  the demo and is responsible for the initial application hardware configuration.
  35  */
  36
  37 #include "MassStorage.h"
  38
  39 /** LUFA Mass Storage Class driver interface configuration and state information. This structure is
  40  *  passed to all Mass Storage 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_MS_Device_t Disk_MS_Interface =
  44         {
  45                 .Config =
  46                         {
  47                                 .InterfaceNumber           = 0,
  48                                 .DataINEndpoint            =
  49                                         {
  50                                                 .Address           = MASS_STORAGE_IN_EPADDR,
  51                                                 .Size              = MASS_STORAGE_IO_EPSIZE,
  52                                                 .Banks             = 1,
  53                                         },
  54                                 .DataOUTEndpoint           =
  55                                         {
  56                                                 .Address           = MASS_STORAGE_OUT_EPADDR,
  57                                                 .Size              = MASS_STORAGE_IO_EPSIZE,
  58                                                 .Banks             = 1,
  59                                         },
  60                                 .TotalLUNs                 = TOTAL_LUNS,
  61                         },
  62         };
  63
  64
  65 /** Main program entry point. This routine contains the overall program flow, including initial
  66  *  setup of all components and the main program loop.
  67  */
  68 int main(void)
  69 {
  70         SetupHardware();
  71
  72         LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
  73         sei();
  74
  75         for (;;)
  76         {
  77                 MS_Device_USBTask(&Disk_MS_Interface);
  78                 USB_USBTask();
  79         }
  80 }
  81
  82 /** Configures the board hardware and chip peripherals for the demo's functionality. */
  83 void SetupHardware(void)
  84 {
  85         /* Disable watchdog if enabled by bootloader/fuses */
  86         MCUSR &= ~(1 << WDRF);
  87         wdt_disable();
  88
  89         /* Disable clock division */
  90         clock_prescale_set(clock_div_1);
  91
  92         /* Hardware Initialization */
  93         LEDs_Init();
  94         SPI_Init(SPI_SPEED_FCPU_DIV_2 | SPI_ORDER_MSB_FIRST | SPI_SCK_LEAD_FALLING | SPI_SAMPLE_TRAILING | SPI_MODE_MASTER);
  95         Dataflash_Init();
  96         USB_Init();
  97
  98         /* Check if the Dataflash is working, abort if not */
  99         if (!(DataflashManager_CheckDataflashOperation()))
 100         {
 101                 LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 102                 for(;;);
 103         }
 104
 105         /* Clear Dataflash sector protections, if enabled */
 106         DataflashManager_ResetDataflashProtections();
 107 }
 108
 109 /** Event handler for the library USB Connection event. */
 110 void EVENT_USB_Device_Connect(void)
 111 {
 112         LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
 113 }
 114
 115 /** Event handler for the library USB Disconnection event. */
 116 void EVENT_USB_Device_Disconnect(void)
 117 {
 118         LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
 119 }
 120
 121 /** Event handler for the library USB Configuration Changed event. */
 122 void EVENT_USB_Device_ConfigurationChanged(void)
 123 {
 124         bool ConfigSuccess = true;
 125
 126         ConfigSuccess &= MS_Device_ConfigureEndpoints(&Disk_MS_Interface);
 127
 128         LEDs_SetAllLEDs(ConfigSuccess ? LEDMASK_USB_READY : LEDMASK_USB_ERROR);
 129 }
 130
 131 /** Event handler for the library USB Control Request reception event. */
 132 void EVENT_USB_Device_ControlRequest(void)
 133 {
 134         MS_Device_ProcessControlRequest(&Disk_MS_Interface);
 135 }
 136
 137 /** Mass Storage class driver callback function the reception of SCSI commands from the host, which must be processed.
 138  *
 139  *  \param[in] MSInterfaceInfo  Pointer to the Mass Storage class interface configuration structure being referenced
 140  */
 141 bool CALLBACK_MS_Device_SCSICommandReceived(USB_ClassInfo_MS_Device_t* const MSInterfaceInfo)
 142 {
 143         bool CommandSuccess;
 144
 145         LEDs_SetAllLEDs(LEDMASK_USB_BUSY);
 146         CommandSuccess = SCSI_DecodeSCSICommand(MSInterfaceInfo);
 147         LEDs_SetAllLEDs(LEDMASK_USB_READY);
 148
 149         return CommandSuccess;
 150 }
 151