SD Card serial number

Prev: Pocket Outlook custom forms
Next: New to Pocket PC devel, porting win32 app

From: ed on 17 Jun 2005 16:14

---

Is there a way to get the serial number of SD/CF card that is currently
inserted into the Pocket PC?

I've found it with the desktop using IOCTL_STORAGE_GET_MEDIA_SERIAL_NUMBER.
But I can't find this in the Pocket PC docs.

thanks in advance,
ed

From: buzz on 18 Jun 2005 22:06

---

#include <projects.h>
#include <winioctl.h>

// Include library Note_Prj.lib
#pragma comment (lib, "Note_Prj.lib")

//------------------------------------------------------------------------------
//
// Static data members
//
//------------------------------------------------------------------------------
TCHAR CFlashCard::m_CardPath[CFlashCard::MAX_CARD_PATH];
const UINT CFlashCard::MINIMUM_CARD_SIZE = 63 * (1024 * 1024);

//------------------------------------------------------------------------------
//
// Used to see if a flash card is inserted into a socket. Return true
if card
// is found, false otherwise. Also, if found, sets card's path
//
//------------------------------------------------------------------------------
BOOL CFlashCard::isCardAvailable()
{
BOOL res = TRUE;
HANDLE hFlashCard = NULL;
WIN32_FIND_DATA find;
BOOL loop = TRUE;
UINT flashCardCount = 0;
ULARGE_INTEGER freeBytesAvailableToCaller;
ULARGE_INTEGER totalNumberOfBytes;
ULARGE_INTEGER totalNumberOfFreeBytes;

// Look for the SD card.
memset(&find, 0, sizeof(WIN32_FIND_DATA));

hFlashCard = ::FindFirstFlashCard(&find);

if(INVALID_HANDLE_VALUE != hFlashCard)
{
// We must enumerate the flash cards, since the dumb
// iPAQ file store is defined as a flash card
while(loop)
{
// Only look at the flash card if it is a directory and temporary
if(((find.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) ==
FILE_ATTRIBUTE_DIRECTORY) &&
((find.dwFileAttributes & FILE_ATTRIBUTE_TEMPORARY) ==
FILE_ATTRIBUTE_TEMPORARY))
{
// NOTE: Even though we specify temporary, the local storage will
also be
// found, such as "iPaq File Store" for ipaqs and "Built-in Storage" for
// Dells. So, instead of filtering on a name, we will filter on a
// volumn size. The storage must be at least MIN_FLASH_CARD_SIZE
for us
// to consider it to be a storage card
res = ::GetDiskFreeSpaceEx(find.cFileName, &freeBytesAvailableToCaller,
&totalNumberOfBytes,
&totalNumberOfFreeBytes);

// Only count the card if it is the correct size
if((res == TRUE) && (totalNumberOfBytes.QuadPart >= MINIMUM_CARD_SIZE))
{
// Save the name of the flash card
_tcsncpy(m_CardPath, find.cFileName, MAX_CARD_PATH);
flashCardCount++;
}
}

// Next flash card
loop = ::FindNextFlashCard(hFlashCard, &find);
}

::FindClose (hFlashCard);

// If no flash cards were found in the enumeration, then leave
if(flashCardCount == 0)
{
res = FALSE;
}
}
else
{
// No flash cards found
_stprintf(m_CardPath, _T("ERR: %d"), ::GetLastError());
res = FALSE;
}

return res;
}

//------------------------------------------------------------------------------
//
// Get the flash card serial number and save in passed in buffer.
//
//------------------------------------------------------------------------------
BOOL CFlashCard::getSerialNumber(TCHAR* buf, UINT bufLength)
{
// These values are only defined in Platform Builder, so we have to
// redefine them here
#define IOCTL_DISK_BASE FILE_DEVICE_DISK
#define IOCTL_DISK_GET_STORAGEID CTL_CODE(IOCTL_DISK_BASE, 0x709, \
METHOD_BUFFERED, FILE_ANY_ACCESS)
#define MANUFACTUREID_INVALID 0x01
#define SERIALNUM_INVALID 0x02

// This structure is only defined in Platform Builder, so we have to
// redefine it here
typedef struct _STORAGE_IDENTIFICATION
{
DWORD dwSize;
DWORD dwFlags;
DWORD dwManufactureIDOffest;
DWORD dwSerialNumOffset;
} STORAGE_IDENTIFICATION, *PSTORAGE_IDENTIFICATION;

const UINT BBUF_LENGTH = 256;
const UINT STR_LENGTH = 256;
const UINT SERIAL_NUMBER_LENGTH = 8;
BOOL res = TRUE;
byte bbuf[BBUF_LENGTH];
TCHAR str[STR_LENGTH];
STORAGE_IDENTIFICATION* si;
HANDLE hCard = NULL;
ULONG dwNumReturned = 0;
ULONG err = 0;

// Make sure a card is inserted and found before attempting to read
// the serial number
if(isCardAvailable() == TRUE)
{
// Clear the buffer
memset(bbuf, 0, BBUF_LENGTH);

// Clear the buffer
memset(buf, 0, bufLength * sizeof(TCHAR));

// Set a STORAGE_IDENTIFICATION pointer to the buffer (overlaying the
structure)
si = (STORAGE_IDENTIFICATION*)bbuf;

// Create the volume name of the flash card
_stprintf(str, _T("\\%s\\Vol:"), m_CardPath);

// Get a handle to the flash card (drive) volume
hCard = ::CreateFile(str, GENERIC_READ, 0, NULL, OPEN_EXISTING, 0, NULL);

// Set the size element of the STORAGE_IDENTIFICATION structure
si->dwSize = BBUF_LENGTH;

// Fill the STORAGE_IDENTIFICATION structure with the flash card info
if(::DeviceIoControl(hCard, IOCTL_DISK_GET_STORAGEID, (LPVOID)NULL, 0,
si, BBUF_LENGTH, &dwNumReturned, NULL) == FALSE)
{
err = ::GetLastError();
res = FALSE;
}

// Close the handle
::CloseHandle (hCard);

// See if the serial number is valid. If not, return false, otherwise
get
// the serial number
if((si->dwFlags & SERIALNUM_INVALID) != SERIALNUM_INVALID)
{
// Get a char pointer to the serial number in the byte array
CHAR* sn = (CHAR*)((UINT)si + si->dwSerialNumOffset);

// Covert the CHAR serial number to a TCHAR string
mbstowcs(buf, sn, SERIAL_NUMBER_LENGTH);
buf[SERIAL_NUMBER_LENGTH] = 0;
}
else
{
// Serial number is not available
_tcscpy(buf, _T("! NONE !"));
res = FALSE;
}
}
else
{
// No card
_tcscpy(buf, _T("NO CARD"));
res = FALSE;
}

return res;
}


ed wrote:

> Is there a way to get the serial number of SD/CF card that is currently
> inserted into the Pocket PC?
>
> I've found it with the desktop using IOCTL_STORAGE_GET_MEDIA_SERIAL_NUMBER.
> But I can't find this in the Pocket PC docs.
>
> thanks in advance,
> ed

 | 
Pages: 1
Prev: Pocket Outlook custom forms
Next: New to Pocket PC devel, porting win32 app