Demos/Device/ClassDriver/MassStorage/MassStorage.c

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2010.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6       www.fourwalledcubicle.com
   7 */
   8
   9 /*
  10   Copyright 2010  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
  49                                 .DataINEndpointNumber      = MASS_STORAGE_IN_EPNUM,
  50                                 .DataINEndpointSize        = MASS_STORAGE_IO_EPSIZE,
  51                                 .DataINEndpointDoubleBank  = false,
  52
  53                                 .DataOUTEndpointNumber     = MASS_STORAGE_OUT_EPNUM,
  54                                 .DataOUTEndpointSize       = MASS_STORAGE_IO_EPSIZE,
  55                                 .DataOUTEndpointDoubleBank = false,
  56
  57                                 .TotalLUNs                 = TOTAL_LUNS,
  58                         },
  59         };
  60
  61 /** Main program entry point. This routine contains the overall program flow, including initial
  62  *  setup of all components and the main program loop.
  63  */
  64 int main(void)
  65 {
  66         SetupHardware();
  67
  68         LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
  69         sei();
  70
  71         for (;;)
  72         {
  73                 MS_Device_USBTask(&Disk_MS_Interface);
  74                 USB_USBTask();
  75         }
  76 }
  77
  78 /** Configures the board hardware and chip peripherals for the demo's functionality. */
  79 void SetupHardware(void)
  80 {
  81         /* Disable watchdog if enabled by bootloader/fuses */
  82         MCUSR &= ~(1 << WDRF);
  83         wdt_disable();
  84
  85         /* Disable clock division */
  86         clock_prescale_set(clock_div_1);
  87
  88         /* Hardware Initialization */
  89         LEDs_Init();
  90         SPI_Init(SPI_SPEED_FCPU_DIV_2 | SPI_SCK_LEAD_FALLING | SPI_SAMPLE_TRAILING | SPI_MODE_MASTER);
  91         Dataflash_Init();
  92         USB_Init();
  93
  94         /* Clear Dataflash sector protections, if enabled */
  95         DataflashManager_ResetDataflashProtections();
  96 }
  97
  98 /** Event handler for the library USB Connection event. */
  99 void EVENT_USB_Device_Connect(void)
 100 {
 101         LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
 102 }
 103
 104 /** Event handler for the library USB Disconnection event. */
 105 void EVENT_USB_Device_Disconnect(void)
 106 {
 107         LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
 108 }
 109
 110 /** Event handler for the library USB Configuration Changed event. */
 111 void EVENT_USB_Device_ConfigurationChanged(void)
 112 {
 113         LEDs_SetAllLEDs(LEDMASK_USB_READY);
 114
 115         if (!(MS_Device_ConfigureEndpoints(&Disk_MS_Interface)))
 116           LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 117 }
 118
 119 /** Event handler for the library USB Unhandled Control Request event. */
 120 void EVENT_USB_Device_UnhandledControlRequest(void)
 121 {
 122         MS_Device_ProcessControlRequest(&Disk_MS_Interface);
 123 }
 124
 125 /** Mass Storage class driver callback function the reception of SCSI commands from the host, which must be processed.
 126  *
 127  *  \param[in] MSInterfaceInfo  Pointer to the Mass Storage class interface configuration structure being referenced
 128  */
 129 bool CALLBACK_MS_Device_SCSICommandReceived(USB_ClassInfo_MS_Device_t* const MSInterfaceInfo)
 130 {
 131         bool CommandSuccess;
 132
 133         LEDs_SetAllLEDs(LEDMASK_USB_BUSY);
 134         CommandSuccess = SCSI_DecodeSCSICommand(MSInterfaceInfo);
 135         LEDs_SetAllLEDs(LEDMASK_USB_READY);
 136
 137         return CommandSuccess;
 138 }