117 lines
5.0 KiB
C
117 lines
5.0 KiB
C
/**************************************************************************/
|
|
/*!
|
|
@file msc_device_ramdisk.c
|
|
@author hathach (tinyusb.org)
|
|
|
|
@section LICENSE
|
|
|
|
Software License Agreement (BSD License)
|
|
|
|
Copyright (c) 2013, hathach (tinyusb.org)
|
|
All rights reserved.
|
|
|
|
Redistribution and use in source and binary forms, with or without
|
|
modification, are permitted provided that the following conditions are met:
|
|
1. Redistributions of source code must retain the above copyright
|
|
notice, this list of conditions and the following disclaimer.
|
|
2. Redistributions in binary form must reproduce the above copyright
|
|
notice, this list of conditions and the following disclaimer in the
|
|
documentation and/or other materials provided with the distribution.
|
|
3. Neither the name of the copyright holders nor the
|
|
names of its contributors may be used to endorse or promote products
|
|
derived from this software without specific prior written permission.
|
|
|
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY
|
|
EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
|
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE FOR ANY
|
|
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
|
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
|
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
|
|
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
|
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
|
|
This file is part of the tinyusb stack.
|
|
*/
|
|
/**************************************************************************/
|
|
|
|
#include "msc_device_app.h"
|
|
|
|
#if CFG_TUD_MSC && defined (MSCD_APP_RAMDISK)
|
|
|
|
//--------------------------------------------------------------------+
|
|
// MACRO CONSTANT TYPEDEF
|
|
//--------------------------------------------------------------------+
|
|
|
|
//--------------------------------------------------------------------+
|
|
// INTERNAL OBJECT & FUNCTION DECLARATION
|
|
//--------------------------------------------------------------------+
|
|
CFG_TUSB_ATTR_USBRAM CFG_TUSB_MEM_ALIGN
|
|
uint8_t msc_device_ramdisk[DISK_BLOCK_NUM][DISK_BLOCK_SIZE] =
|
|
{
|
|
//------------- Boot Sector -------------//
|
|
// byte_per_sector = DISK_BLOCK_SIZE; fat12_sector_num_16 = DISK_BLOCK_NUM;
|
|
// sector_per_cluster = 1; reserved_sectors = 1;
|
|
// fat_num = 1; fat12_root_entry_num = 16;
|
|
// sector_per_fat = 1; sector_per_track = 1; head_num = 1; hidden_sectors = 0;
|
|
// drive_number = 0x80; media_type = 0xf8; extended_boot_signature = 0x29;
|
|
// filesystem_type = "FAT12 "; volume_serial_number = 0x1234; volume_label = "tinyusb msc";
|
|
[0] =
|
|
{
|
|
0xEB, 0x3C, 0x90, 0x4D, 0x53, 0x44, 0x4F, 0x53, 0x35, 0x2E, 0x30, 0x00, 0x02, 0x01, 0x01, 0x00,
|
|
0x01, 0x10, 0x00, 0x10, 0x00, 0xF8, 0x01, 0x00, 0x01, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
0x00, 0x00, 0x00, 0x00, 0x80, 0x00, 0x29, 0x34, 0x12, 0x00, 0x00, 0x74, 0x69, 0x6E, 0x79, 0x75,
|
|
0x73, 0x62, 0x20, 0x6D, 0x73, 0x63, 0x46, 0x41, 0x54, 0x31, 0x32, 0x20, 0x20, 0x20, 0x00, 0x00,
|
|
[510] = 0x55, [511] = 0xAA // FAT magic code
|
|
},
|
|
|
|
//------------- FAT12 Table -------------//
|
|
[1] =
|
|
{
|
|
0xF8, 0xFF, 0xFF, 0xFF, 0x0F // // first 2 entries must be F8FF, third entry is cluster end of readme file
|
|
},
|
|
|
|
//------------- Root Directory -------------//
|
|
[2] =
|
|
{
|
|
// first entry is volume label
|
|
0x54, 0x49, 0x4E, 0x59, 0x55, 0x53, 0x42, 0x20, 0x4D, 0x53, 0x43, 0x08, 0x00, 0x00, 0x00, 0x00,
|
|
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x4F, 0x6D, 0x65, 0x43, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
// second entry is readme file
|
|
'R' , 'E' , 'A' , 'D' , 'M' , 'E' , ' ' , ' ' , 'T' , 'X' , 'T' , 0x20, 0x00, 0xC6, 0x52, 0x6D,
|
|
0x65, 0x43, 0x65, 0x43, 0x00, 0x00, 0x88, 0x6D, 0x65, 0x43, 0x02, 0x00,
|
|
sizeof(README_CONTENTS)-1, 0x00, 0x00, 0x00 // readme's filesize (4 Bytes)
|
|
},
|
|
|
|
//------------- Readme Content -------------//
|
|
[3] = README_CONTENTS
|
|
};
|
|
|
|
|
|
// Callback invoked when received READ10 command.
|
|
// Copy disk's data to buffer (up to bufsize) and return number of copied bytes.
|
|
int32_t tud_msc_read10_cb(uint8_t lun, uint32_t lba, uint32_t offset, void* buffer, uint32_t bufsize)
|
|
{
|
|
uint8_t* addr = msc_device_ramdisk[lba] + offset;
|
|
memcpy(buffer, addr, bufsize);
|
|
|
|
return bufsize;
|
|
}
|
|
|
|
// Callback invoked when received WRITE10 command.
|
|
// Process data in buffer to disk's storage and return number of written bytes
|
|
int32_t tud_msc_write10_cb(uint8_t lun, uint32_t lba, uint32_t offset, void* buffer, uint32_t bufsize)
|
|
{
|
|
uint8_t* addr = msc_device_ramdisk[lba] + offset;
|
|
memcpy(addr, buffer, bufsize);
|
|
|
|
return bufsize;
|
|
}
|
|
|
|
//--------------------------------------------------------------------+
|
|
// HELPER
|
|
//--------------------------------------------------------------------+
|
|
|
|
#endif
|