64K eeprom support and eeprom contents on second lun
This commit is contained in:
romolo.manfredini@gmail.com
+5
-1
@@ -41,7 +41,11 @@
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#if defined(CPUARM)
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#define blkid_t uint16_t
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#define EESIZE (32*1024)
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#if defined(REV3)
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#define EESIZE (32*1024)
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#else
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#define EESIZE (64*1024)
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#endif
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#define EEFS_VERS 5
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#define MAXFILES 62
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#define BS 64
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@@ -33,8 +33,12 @@ extern "C" {
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#include "STM32F2xx_StdPeriph_Lib_V1.1.0/Libraries/STM32F2xx_StdPeriph_Driver/inc/misc.h"
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#include "usbd_msc_mem.h"
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#include "usb_conf.h"
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extern void eeprom_read_block (void *pointer_ram, uint16_t pointer_eeprom, size_t size);
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#define STORAGE_LUN_NBR 1
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#define STORAGE_LUN_NBR 2
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// TODO ... perhaps something more adequate ;)
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#define SD_GetStatus() (0)
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/* USB Mass storage Standard Inquiry Data */
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const unsigned char STORAGE_Inquirydata[] = {//36
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@@ -52,9 +56,25 @@ const unsigned char STORAGE_Inquirydata[] = {//36
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'T', 'a', 'r', 'a', 'n', 'i', 's', ' ', /* Product : 16 Bytes */
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'R', 'a', 'd', 'i', 'o', ' ', ' ', ' ',
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'1', '.', '0', '0', /* Version : 4 Bytes */
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/* LUN 1 */
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0x00,
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0x80,
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0x02,
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0x02,
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(USBD_STD_INQUIRY_LENGTH - 5),
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0x00,
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0x00,
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0x00,
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'F', 'r', 'S', 'k', 'y', ' ', ' ', ' ', /* Manufacturer : 8 bytes */
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'T', 'a', 'r', 'a', 'n', 'i', 's', ' ', /* Product : 16 Bytes */
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'R', 'a', 'd', 'i', 'o', 'E', 'P', 'M',
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'1', '.', '0' ,'0', /* Version : 4 Bytes */
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};
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int32_t fat12Write( const uint8_t *buffer, uint16_t sector, uint32_t count ) ;
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int32_t fat12Read( uint8_t *buffer, uint16_t sector, uint16_t count ) ;
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int8_t STORAGE_Init (uint8_t lun);
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int8_t STORAGE_GetCapacity (uint8_t lun,
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@@ -120,7 +140,14 @@ int8_t STORAGE_Init (uint8_t lun)
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*/
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int8_t STORAGE_GetCapacity (uint8_t lun, uint32_t *block_num, uint32_t *block_size)
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{
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if (!SD_CARD_PRESENT())
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if ( lun == 1 )
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{
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*block_size = 512;
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*block_num = 1024*64 + 3 ;
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return (0);
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}
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if (SD_GetStatus() != 0 )
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return -1;
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*block_size = 512;
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@@ -140,7 +167,25 @@ int8_t STORAGE_GetCapacity (uint8_t lun, uint32_t *block_num, uint32_t *block_si
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*/
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int8_t STORAGE_IsReady (uint8_t lun)
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{
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return SD_CARD_PRESENT() ? 0 : -1;
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static int8_t last_status = 0;
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if ( lun == 1 )
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{
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return (0);
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}
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if(last_status < 0)
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{
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// TODO ? SD_Init();
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last_status = 0;
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}
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if(SD_GetStatus() != 0)
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{
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last_status = -1;
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return (-1);
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}
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return (0);
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}
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/**
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@@ -162,6 +207,7 @@ int8_t STORAGE_IsWriteProtected (uint8_t lun)
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* @retval Status
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*/
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// TODO quick & dirty
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int8_t SD_ReadSectors(uint8_t *buff, uint32_t sector, uint32_t count);
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int8_t STORAGE_Read (uint8_t lun,
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@@ -169,6 +215,15 @@ int8_t STORAGE_Read (uint8_t lun,
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uint32_t blk_addr,
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uint16_t blk_len)
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{
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if ( lun == 1 )
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{
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if (fat12Read( buf, blk_addr, blk_len ) == 0 )
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{
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return 0 ;
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}
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return -1 ;
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}
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if( SD_ReadSectors (buf,
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blk_addr,
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@@ -176,7 +231,10 @@ int8_t STORAGE_Read (uint8_t lun,
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{
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return -1;
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}
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#if 0
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SD_WaitReadOperation();
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while (SD_GetStatus() != SD_TRANSFER_OK);
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#endif
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return 0;
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}
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/**
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@@ -195,6 +253,14 @@ int8_t STORAGE_Write (uint8_t lun,
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uint32_t blk_addr,
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uint16_t blk_len)
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{
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if ( lun == 1 )
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{
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if (fat12Write( buf, blk_addr, blk_len ) == 0 )
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{
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return 0 ;
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}
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return -1 ;
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}
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if( SD_WriteSectors (buf,
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blk_addr,
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@@ -202,7 +268,10 @@ int8_t STORAGE_Write (uint8_t lun,
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{
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return -1;
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}
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#if 0
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SD_WaitWriteOperation();
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while (SD_GetStatus() != SD_TRANSFER_OK);
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#endif
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return (0);
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}
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@@ -217,6 +286,414 @@ int8_t STORAGE_GetMaxLun (void)
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return (STORAGE_LUN_NBR - 1);
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}
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// Test FAT12 etc.
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#define BLOCKSIZE 512
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//------------------------------------------------------------------------------
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/**
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* FAT12 boot sector partition.
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*/
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const char g_FATboot[BLOCKSIZE] =
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{
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0xeb, 0x3c, 0x90, // Jump instruction.
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0x39, 0x58, 0x20, 0x54, 0x45, 0x41, 0x4D, 0x00, // OEM Name
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0x00, 0x02, // Bytes per sector
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0x01, // Sectors per FS cluster.
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0x01, 0x00, // Reserved sector count
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0x01, // Number of FATs
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0x10, 0x00, // Number of root directory entries
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0x83, 0x00, // Total sectors = 131
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0xf8, // Media descriptor
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0x01, 0x00, // Sectors per FAT table
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0x20, 0x00, // Sectors per track
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0x40, 0x00, // Number of heads
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0x00, 0x00, 0x00, 0x00, // Number of hidden sectors
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0x00, 0x00, 0x00, 0x00, // Large number of sectors.
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0x00, // Physical drive number
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0x00, // Reserved
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0x29, // Extended boot signature
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0xCE, 0xFA, 0x5C, 0xD1, // Disk ID (serial number)
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0x56, 0x49, 0x52, 0x54, 0x46, 0x53, 0x20, 0x20, 0x20, 0x20, 0x20, // Volume label
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0x46, 0x41, 0x54, 0x31, 0x32, 0x20, 0x20, 0x20, // FAT file system type
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0x00, 0x00, // OS boot code
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x55, 0xaa
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};
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const char g_FAT[BLOCKSIZE] =
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{
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0xF8, 0xFF, 0xFF, 0x03, 0x40, 0x00, 0x05, 0x60, 0x00, 0x07, 0x80, 0x00, 0x09, 0xA0, 0x00, 0x0B,
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0xC0, 0x00, 0x0D, 0xE0, 0x00, 0x0F, 0x00, 0x01, 0x11, 0x20, 0x01, 0x13, 0x40, 0x01, 0x15, 0x60,
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0x01, 0x17, 0x80, 0x01, 0x19, 0xA0, 0x01, 0x1B, 0xC0, 0x01, 0x1D, 0xE0, 0x01, 0x1F, 0x00, 0x02,
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0x21, 0x20, 0x02, 0x23, 0x40, 0x02, 0x25, 0x60, 0x02, 0x27, 0x80, 0x02, 0x29, 0xA0, 0x02, 0x2B,
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0xC0, 0x02, 0x2D, 0xE0, 0x02, 0x2F, 0x00, 0x03, 0x31, 0x20, 0x03, 0x33, 0x40, 0x03, 0x35, 0x60,
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0x03, 0x37, 0x80, 0x03, 0x39, 0xA0, 0x03, 0x3B, 0xC0, 0x03, 0x3D, 0xE0, 0x03, 0x3F, 0x00, 0x04,
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0x41, 0x20, 0x04, 0x43, 0x40, 0x04, 0x45, 0x60, 0x04, 0x47, 0x80, 0x04, 0x49, 0xA0, 0x04, 0x4B,
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0xC0, 0x04, 0x4D, 0xE0, 0x04, 0x4F, 0x00, 0x05, 0x51, 0x20, 0x05, 0x53, 0x40, 0x05, 0x55, 0x60,
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0x05, 0x57, 0x80, 0x05, 0x59, 0xA0, 0x05, 0x5B, 0xC0, 0x05, 0x5D, 0xE0, 0x05, 0x5F, 0x00, 0x06,
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0x61, 0x20, 0x06, 0x63, 0x40, 0x06, 0x65, 0x60, 0x06, 0x67, 0x80, 0x06, 0x69, 0xA0, 0x06, 0x6B,
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0xC0, 0x06, 0x6D, 0xE0, 0x06, 0x6F, 0x00, 0x07, 0x71, 0x20, 0x07, 0x73, 0x40, 0x07, 0x75, 0x60,
|
||||
0x07, 0x77, 0x80, 0x07, 0x79, 0xA0, 0x07, 0x7B, 0xC0, 0x07, 0x7D, 0xE0, 0x07, 0x7F, 0x00, 0x08,
|
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0x81, 0xF0, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
};
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typedef struct
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{
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uint8_t name[8];
|
||||
uint8_t ext[3];
|
||||
uint8_t attribute;
|
||||
uint8_t reserved;
|
||||
uint8_t create_time_ms;
|
||||
uint16_t create_time;
|
||||
uint16_t create_date;
|
||||
uint16_t access_date;
|
||||
uint16_t ea_index;
|
||||
uint16_t modify_time;
|
||||
uint16_t modify_date;
|
||||
uint16_t start_cluster;
|
||||
uint32_t file_size;
|
||||
} FATDirEntry_t;
|
||||
|
||||
// First 16 FAT root directory entries (1 sector)
|
||||
const FATDirEntry_t g_DIRroot[16] =
|
||||
{
|
||||
{
|
||||
{ 'T', 'A', 'R', 'A', 'N', 'I', 'S', ' '},
|
||||
{ 'B', 'I', 'N'},
|
||||
0x20,
|
||||
0x00,
|
||||
0x3E,
|
||||
0xA301,
|
||||
0x3D55,
|
||||
0x3D55,
|
||||
0x0000,
|
||||
0xA302,
|
||||
0x3D55,
|
||||
0x0002,
|
||||
0x00010000
|
||||
},
|
||||
{
|
||||
{ '\x00', ' ', ' ', ' ', ' ', ' ', ' ', ' '},
|
||||
{ ' ', ' ', ' '},
|
||||
0x00,
|
||||
0x00,
|
||||
0x00,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x00000000
|
||||
},
|
||||
{
|
||||
{ '\x00', ' ', ' ', ' ', ' ', ' ', ' ', ' '},
|
||||
{ ' ', ' ', ' '},
|
||||
0x00,
|
||||
0x00,
|
||||
0x00,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x00000000
|
||||
},
|
||||
{
|
||||
{ '\x00', ' ', ' ', ' ', ' ', ' ', ' ', ' '},
|
||||
{ ' ', ' ', ' '},
|
||||
0x00,
|
||||
0x00,
|
||||
0x00,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x00000000
|
||||
},
|
||||
{
|
||||
{ '\x00', ' ', ' ', ' ', ' ', ' ', ' ', ' '},
|
||||
{ ' ', ' ', ' '},
|
||||
0x00,
|
||||
0x00,
|
||||
0x00,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x00000000
|
||||
},
|
||||
{
|
||||
{ '\x00', ' ', ' ', ' ', ' ', ' ', ' ', ' '},
|
||||
{ ' ', ' ', ' '},
|
||||
0x00,
|
||||
0x00,
|
||||
0x00,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x00000000
|
||||
},
|
||||
{
|
||||
{ '\x00', ' ', ' ', ' ', ' ', ' ', ' ', ' '},
|
||||
{ ' ', ' ', ' '},
|
||||
0x00,
|
||||
0x00,
|
||||
0x00,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x00000000
|
||||
},
|
||||
{
|
||||
{ '\x00', ' ', ' ', ' ', ' ', ' ', ' ', ' '},
|
||||
{ ' ', ' ', ' '},
|
||||
0x00,
|
||||
0x00,
|
||||
0x00,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x00000000
|
||||
},
|
||||
{
|
||||
{ '\x00', ' ', ' ', ' ', ' ', ' ', ' ', ' '},
|
||||
{ ' ', ' ', ' '},
|
||||
0x00,
|
||||
0x00,
|
||||
0x00,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x00000000
|
||||
},
|
||||
{
|
||||
{ '\x00', ' ', ' ', ' ', ' ', ' ', ' ', ' '},
|
||||
{ ' ', ' ', ' '},
|
||||
0x00,
|
||||
0x00,
|
||||
0x00,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x00000000
|
||||
},
|
||||
{
|
||||
{ '\x00', ' ', ' ', ' ', ' ', ' ', ' ', ' '},
|
||||
{ ' ', ' ', ' '},
|
||||
0x00,
|
||||
0x00,
|
||||
0x00,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x00000000
|
||||
},
|
||||
{
|
||||
{ '\x00', ' ', ' ', ' ', ' ', ' ', ' ', ' '},
|
||||
{ ' ', ' ', ' '},
|
||||
0x00,
|
||||
0x00,
|
||||
0x00,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x00000000
|
||||
},
|
||||
{
|
||||
{ '\x00', ' ', ' ', ' ', ' ', ' ', ' ', ' '},
|
||||
{ ' ', ' ', ' '},
|
||||
0x00,
|
||||
0x00,
|
||||
0x00,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x00000000
|
||||
},
|
||||
{
|
||||
{ '\x00', ' ', ' ', ' ', ' ', ' ', ' ', ' '},
|
||||
{ ' ', ' ', ' '},
|
||||
0x00,
|
||||
0x00,
|
||||
0x00,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x00000000
|
||||
},
|
||||
{
|
||||
{ '\x00', ' ', ' ', ' ', ' ', ' ', ' ', ' '},
|
||||
{ ' ', ' ', ' '},
|
||||
0x00,
|
||||
0x00,
|
||||
0x00,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x00000000
|
||||
},
|
||||
{
|
||||
{ '\x00', ' ', ' ', ' ', ' ', ' ', ' ', ' '},
|
||||
{ ' ', ' ', ' '},
|
||||
0x00,
|
||||
0x00,
|
||||
0x00,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x0000,
|
||||
0x00000000
|
||||
},
|
||||
};
|
||||
|
||||
|
||||
// count is number of 512 byte sectors
|
||||
int32_t fat12Read( uint8_t *buffer, uint16_t sector, uint16_t count )
|
||||
{
|
||||
while ( count )
|
||||
{
|
||||
if (sector == 0)
|
||||
{
|
||||
memcpy( buffer, g_FATboot, BLOCKSIZE ) ;
|
||||
}
|
||||
else if ( sector == 1/*Reserved sector count*/)
|
||||
{
|
||||
// FAT table.
|
||||
memcpy( buffer, g_FAT, BLOCKSIZE);
|
||||
}
|
||||
else if ( sector == 2)
|
||||
{
|
||||
memcpy( buffer, g_DIRroot, BLOCKSIZE ) ;
|
||||
}
|
||||
else
|
||||
{
|
||||
eeprom_read_block (buffer, (sector-3)*512, 512);
|
||||
}
|
||||
buffer += 512 ;
|
||||
sector += 1 ;
|
||||
count -= 1 ;
|
||||
}
|
||||
return 0 ;
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
|
||||
//------------------------------------------------------------------------------
|
||||
int32_t fat12Write( const uint8_t *buffer, uint16_t sector, uint32_t count )
|
||||
{
|
||||
// TO DO, actually write to the EEPROM
|
||||
if ( sector > 2 )
|
||||
{
|
||||
sector -= 2 ; // Indexes EEPROM in 512 byte blocks
|
||||
// Look for a 4K block boundary, writing 4K+
|
||||
|
||||
}
|
||||
return 0 ;
|
||||
}
|
||||
|
||||
|
||||
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
|
||||
|
||||
|
||||
Reference in New Issue
Block a user