About SDIO Card Driver

About SDIO Card Driver

• NickNotYet

  You'd better get yourself a copy of Platform Builder if you are really set on doing this. Talking to the hardware is no small task and it is platform dependant so you will have to rewrite it for several platforms, essentially writing your own PDD layer. If you are just trying to see if an SDIO port is available there a ways of checking the registry. You can also (as Micheal suggested) just interface to the devices.exe to see if it's available. However if interfacing directly to the hardware is really your desire then you are in the wrong newsgroup. Try going to a newsgroup that does Platform Builder as most of the people here are native developers not platform developers.

  Try:

  http://msdn.microsoft.com/newsgroups/default.aspx dg=microsoft.public.windowsce.platbuilder&lang=en&cr=US

  or

  http://msdn.microsoft.com/newsgroups/default.aspx dg=microsoft.public.windowsce.embedded&lang=en&cr=US

  
  
  

• Zadoras

  You should ask the manufacturers of the driver. Each client driver is different and it needs to be set up properly for the device. If the device is not loading at runtime then it could be a problem with the client drivers registries, a problem with the driver, or a problem with the device.

  Only the client driver should have access to SDCardInfoQuery. This is probably why the command did not work.

  
  
  

• DQM

  Hai ,

  can anyone send a sample application to test SDIO Card communication in WINCE.

  Thanks in advance

  
  
  

• Ross B.

  Hai,

  Here is the sample application.see whether i did any mistake

  
  HANDLE hSdcDev;
  hSdcDev = RegisterDevice( TEXT("DSK"), 1, TEXT("SDMemory.dll"),0);
  
  if(hSdcDev == INVALID_HANDLE_VALUE)
  {

  printf("not able register device.: %d", GetLastError());
  }

  
  HANDLE Handle;
  
  printf("get the handle\n");

  Handle = CreateFile(L"DSK1:",GENERIC_READ | GENERIC_WRITE,
  FILE_SHARE_READ | FILE_SHARE_WRITE,
  NULL,
  OPEN_EXISTING,
  FILE_ATTRIBUTE_NORMAL, NULL );

  if(Handle == INVALID_HANDLE_VALUE)
  {

  printf("not able get the handle.: %d", GetLastError());
  }

  SD_API_STATUS status;
  
  SD_PARSED_REGISTER_CID stcid = {0};
  SD_PARSED_REGISTER_CID *pRedCID = NULL;
  status = SDCardInfoQuery(Handle,
  SD_INFO_REGISTER_CID,
  pRedCID,
  sizeof(SD_PARSED_REGISTER_CID));
  
  
  if (!SD_API_SUCCESS(status))
  {
  printf("not able get the card info.: %d", GetLastError());
  }
  
  else
  {
  printf("CID information\n");
  printf("Manufacturer id :%c\n",stcid.ManufacturerID);
  printf("Manufacturing month %c\n", stcid.ManufacturingMonth );
  }

  if (Handle!=NULL)
  {
  CloseHandle(Handle);
  }

  if (hSdcDev!=NULL)
  {
  DeregisterDevice(hSdcDev);
  }

  But i saw the client drivers in the path HKLM\Drivers\SDCARD\ClientDrivers\Class..But i didnt find these in the HKLM\Drivers\Active registry after inserting the card.

  MMC_Class

  SDIO_Class

  SDMemory_Class

  In the code when using the CreateFile i am getting Invalid Handle( error 55 ERROR_DEV_NOT_EXIST) .Whether i need to add anything in the code..pls check this ..Is there any means to debug this problem.
  

  
  
  

• Remmie

  Hi

  Yes, thats right.

  The SD Host Controller driver itself gets loaded by the device manager (device.exe) on OS boot time.
  Read more here: http://msdn.microsoft.com/library/default.asp url=/library/en-us/wceddk5/html/wce50condriverloadingprocess.asp

  The main tool to debug a driver is the kernel debugger shipped in Platform Builder. Details on how to use those tools can be found here: http://msdn.microsoft.com/library/default.asp url=/library/en-us/wcedebug5/html/wce50conplatformdebugging.asp

  
  
  

• ZopoStyle

  You should probably post what SDIO chipset you are using on the hardware end of the SDIO device. There are several. If you have a custom SDIO chipset (made with and 8051 or ARM) then you should contact the manufacturers for their software. As I mentioned before each client driver is different. That's because each SDIO device has different hardware.
  
  

• johnnyXNA

  Hai,

  I am using

  processor - PXA270

  OS - WINCE

  SDCARD - NCP

  
  
  

• calvin_mayo

  JR Lyon wrote:

  That code is given to the client driver from the bus driver. The client driver gets loaded only after the host controller and bus driver have initialized the card. If you are trying to detect insertion and removal events of the SD card then going through the client driver is probably not the correct method. Instead you should catch the system event with the hex value 0x219 or WM_DEVICECHANGE(undocumented) then put these defines in your source: //INSERTION/REMOVAL EVENTS #define WM_SD_INSERTION 0x8000 #define WM_SD_REMOVAL 0x8004 Check these against the WPARAM value for insertion and removal of the card. You can look in dbt.h for more info.

  Hai,

  Thanku for ur reply.Actually i want to write an application to test the hardware(the SDIO interface of the PXA270) before inserting the SDIO Card. Means i want to perform Hardware diagnosis before inserting the card.. After checking the SD interface if it is fine then user can insert the SD Card..Can we do this without checking insertion or removal of the card(Before the client driver is loaded..Because the Bus and Host controller drivers will be loaded at the OS boot time itself)

  .Is there any means to find this ..so that we can tell that SDIO interface is working fine in the Diagnosis phase of the system.

  Thanks in advance

  
  
  

• sun919

  Michael Koster wrote:

  Hi Yes, thats right. The SD Host Controller driver itself gets loaded by the device manager (device.exe) on OS boot time. Read more here: http://msdn.microsoft.com/library/default.asp url=/library/en-us/wceddk5/html/wce50condriverloadingprocess.asp The main tool to debug a driver is the kernel debugger shipped in Platform Builder. Details on how to use those tools can be found here: http://msdn.microsoft.com/library/default.asp url=/library/en-us/wcedebug5/html/wce50conplatformdebugging.asp

  Hai,

  Thank u for ur immediate reply.

  WINCE image is loaded into PXA270 .Are there any commands in WINCE SD Card driver to find the SD Card port (slot)status of PXA270 before loading the client driver i.e., before placing the SD Card. when is the status code SD_API_STATUS_DEVICE_NOT_CONNECTED will come. can we write an application to diagnosis the SD Card port of PXA270

  
  
  

• codekaizen

  It's not the direct handle that you need but the handle that is given t the client driver upon initialization. It's a unique identifier to let the bus driver know which client driver it's talking to. You shouldn't have access to this handle unless you built the client driver which you didn't. So unless the people who built the client driver did some funky design you can not make that call.

  Honestly, I am not making this stuff up. I've built an SDIO client driver. I know what I'm talking about. You can't make that call.

  
  
  

• Sergey424701

  As I have already mentioned to you you need the handle of the bus driver to make the SDCardInfoQuery call. The handle you have retreived is the client driver. You will not have access to the bus driver handle and therefore you can't make that call.

  
  
  

• Aelx

  That code is given to the client driver from the bus driver. The client driver gets loaded only after the host controller and bus driver have initialized the card. If you are trying to detect insertion and removal events of the SD card then going through the client driver is probably not the correct method. Instead you should catch the system event with the hex value 0x219 or WM_DEVICECHANGE(undocumented) then put these defines in your source:

  //INSERTION/REMOVAL EVENTS
  #define WM_SD_INSERTION 0x8000
  #define WM_SD_REMOVAL 0x8004

  Check these against the WPARAM value for insertion and removal of the card.

  You can look in dbt.h for more info.

  
  
  

• gokce

  Hai,

  I wrote a sample application to interact with SD Card.I want to use the existing the Client drivers in WINCE.When executing the application i used SDCardInfoQuery API function.There i am getting exception saying 0XC0000005 :access violation.

  The bus driver and host controller drivers are there in the active registry.But i didnt find any client driver in the active registry.What is the reason behind that..can any one guide me ...what mistake i have done

  
  
  

• ChecMate

  Hai,

  If i am using the handle of the bus driver (SDC1:) then after the function SDCardInfoQuery I am getting the following exception

  first chance exception in the exe : 0xc0000005: Access violation.

  
  
  
• About SDIO Card Driver