libusb-win32-devel

[Libusb-win32-devel] libusb with borland c-builder

[25an <man...@gm...>]

Hi!

I have just started to use the libusb-win32, I am trying to get it to work
with borland c-builder 6 on win XP.
If I run the test application testlibusb-win.exe It works just fine but when
I take the code and change it for the c-builder I get a problem no mather
what I do I cant read the configure descriptor in the usb_device struct the
code that I am using is this:

__fastcall TForm1::TForm1(TComponent* Owner)
  : TForm(Owner)
{
  //these method is called whene the GUI is created
  usb_init();
  usb_find_busses();
  usb_find_devices();
}
//---------------------------------------------------------------------------

void __fastcall TForm1::Button1Click(TObject *Sender)
{
  // whene button1 on the gui is pushed this method is executed
  version = usb_get_version();

  if(version)
  {
    line = "DLL version:\t";
    line += version->dll.major;
    line += ".";
    line += version->dll.minor;
    line += ".";
    line += version->dll.micro;
    line += ".";
    line += version->dll.nano;

    this->Memo1->Lines->Add(line);

    line = "Driver version:\t";
    line += version->driver.major;
    line += ".";
    line += version->driver.minor;
    line += ".";
    line += version->driver.micro;
    line += ".";
    line += version->driver.nano;

    this->Memo1->Lines->Add(line);
  }

  this->Memo1->Lines->Add("bus/device\t idVendor/idProduct");

  for (bus = usb_get_busses(); bus; bus = bus->next) {
    for (dev = bus->devices; dev; dev = dev->next) {
      int ret, i;
      char string[256];
      usb_dev_handle *udev;

      line = bus->dirname;
      line += "/";
      line += dev->filename;
      line += "\t";
      line += IntToHex(dev->descriptor.idVendor,1);
      line += "/";
      line += IntToHex(dev->descriptor.idProduct,1);

      this->Memo1->Lines->Add(line);

      udev = usb_open(dev);

      if (udev) {
        if (dev->descriptor.iManufacturer) {
          ret = usb_get_string_simple(udev, dev->descriptor.iManufacturer,
                                      string, sizeof(string));
          if (ret > 0) {
            line = "- Manufacturer : ";
            line += AnsiString(string);
            this->Memo1->Lines->Add(line);
          } else {
            this->Memo1->Lines->Add("- Unable to fetch manufacturer
string");
          }
        }

        if (dev->descriptor.iProduct) {
          ret = usb_get_string_simple(udev, dev->descriptor.iProduct,
string,
                                      sizeof(string));
          if (ret > 0) {
            line = "- Product : ";
            line += AnsiString(string);
            this->Memo1->Lines->Add(line);
          } else {
            this->Memo1->Lines->Add("- Unable to fetch product string");
          }
        }

        if (dev->descriptor.iSerialNumber) {
          ret = usb_get_string_simple(udev, dev->descriptor.iSerialNumber, 
                                      string, sizeof(string));
          if (ret > 0) {
            line = "- Serial number : ";
            line += AnsiString(string);
            this->Memo1->Lines->Add(line);
          } else {
            this->Memo1->Lines->Add("- Unable to fetch serial number
string");
          }
        }

        usb_close (udev);
      }

      if (!dev->config) {
        this->Memo1->Lines->Add("  Couldn't retrieve descriptors");
        continue;
      }

      i = 0;
      for (i = 0; i < dev->descriptor.bNumConfigurations; i++)
        print_configuration(&dev->config[i]);
    }
  }
}
//---------------------------------------------------------------------------
void TForm1::print_configuration(struct usb_config_descriptor *config)
{
  int i;
  //!!!!!!!The error occur here!!!!!!!!//
  unsigned short wtlength = config->wTotalLength; //<======== When I am
trying to get any variable in the configure descriptor

  line = "  wTotalLength:         ";
  line += wtlength;

  this->Memo1->Lines->Add(line);
 
}

the error that I get is accsses violation.

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Re: [Libusb-win32-devel] libusb with borland c-builder

[Stephan M. <ste...@we...>]

See http://www.nabble.com/Error-compiling-test-program-tf3508594.html#a9870106

> 
> 
> Hi!
> 
> I have just started to use the libusb-win32, I am trying to get it to work
> with borland c-builder 6 on win XP.
> If I run the test application testlibusb-win.exe It works just fine but when
> I take the code and change it for the c-builder I get a problem no mather
> what I do I cant read the configure descriptor in the usb_device struct the
> code that I am using is this:
> 
> __fastcall TForm1::TForm1(TComponent* Owner)
>   : TForm(Owner)
> {
>   //these method is called whene the GUI is created
>   usb_init();
>   usb_find_busses();
>   usb_find_devices();
> }
> //---------------------------------------------------------------------------
> 
> void __fastcall TForm1::Button1Click(TObject *Sender)
> {
>   // whene button1 on the gui is pushed this method is executed
>   version = usb_get_version();
> 
>   if(version)
>   {
>     line = "DLL version:\t";
>     line += version->dll.major;
>     line += ".";
>     line += version->dll.minor;
>     line += ".";
>     line += version->dll.micro;
>     line += ".";
>     line += version->dll.nano;
> 
>     this->Memo1->Lines->Add(line);
> 
>     line = "Driver version:\t";
>     line += version->driver.major;
>     line += ".";
>     line += version->driver.minor;
>     line += ".";
>     line += version->driver.micro;
>     line += ".";
>     line += version->driver.nano;
> 
>     this->Memo1->Lines->Add(line);
>   }
> 
>   this->Memo1->Lines->Add("bus/device\t idVendor/idProduct");
> 
>   for (bus = usb_get_busses(); bus; bus = bus->next) {
>     for (dev = bus->devices; dev; dev = dev->next) {
>       int ret, i;
>       char string[256];
>       usb_dev_handle *udev;
> 
>       line = bus->dirname;
>       line += "/";
>       line += dev->filename;
>       line += "\t";
>       line += IntToHex(dev->descriptor.idVendor,1);
>       line += "/";
>       line += IntToHex(dev->descriptor.idProduct,1);
> 
>       this->Memo1->Lines->Add(line);
> 
>       udev = usb_open(dev);
> 
>       if (udev) {
>         if (dev->descriptor.iManufacturer) {
>           ret = usb_get_string_simple(udev, dev->descriptor.iManufacturer,
>                                       string, sizeof(string));
>           if (ret > 0) {
>             line = "- Manufacturer : ";
>             line += AnsiString(string);
>             this->Memo1->Lines->Add(line);
>           } else {
>             this->Memo1->Lines->Add("- Unable to fetch manufacturer
> string");
>           }
>         }
> 
>         if (dev->descriptor.iProduct) {
>           ret = usb_get_string_simple(udev, dev->descriptor.iProduct,
> string,
>                                       sizeof(string));
>           if (ret > 0) {
>             line = "- Product : ";
>             line += AnsiString(string);
>             this->Memo1->Lines->Add(line);
>           } else {
>             this->Memo1->Lines->Add("- Unable to fetch product string");
>           }
>         }
> 
>         if (dev->descriptor.iSerialNumber) {
>           ret = usb_get_string_simple(udev, dev->descriptor.iSerialNumber, 
>                                       string, sizeof(string));
>           if (ret > 0) {
>             line = "- Serial number : ";
>             line += AnsiString(string);
>             this->Memo1->Lines->Add(line);
>           } else {
>             this->Memo1->Lines->Add("- Unable to fetch serial number
> string");
>           }
>         }
> 
>         usb_close (udev);
>       }
> 
>       if (!dev->config) {
>         this->Memo1->Lines->Add("  Couldn't retrieve descriptors");
>         continue;
>       }
> 
>       i = 0;
>       for (i = 0; i < dev->descriptor.bNumConfigurations; i++)
>         print_configuration(&dev->config[i]);
>     }
>   }
> }
> //---------------------------------------------------------------------------
> void TForm1::print_configuration(struct usb_config_descriptor *config)
> {
>   int i;
>   //!!!!!!!The error occur here!!!!!!!!//
>   unsigned short wtlength = config->wTotalLength; //<======== When I am
> trying to get any variable in the configure descriptor
> 
>   line = "  wTotalLength:         ";
>   line += wtlength;
> 
>   this->Memo1->Lines->Add(line);
>  
> }
> 
> the error that I get is accsses violation.
> 
> -- 
> View this message in context: http://www.nabble.com/libusb-with-borland-c-builder-tf3827103.html#a10833779
> Sent from the LibUSB Dev - Win32 mailing list archive at Nabble.com.
> 
> 
> -------------------------------------------------------------------------
> This SF.net email is sponsored by DB2 Express
> Download DB2 Express C - the FREE version of DB2 express and take
> control of your XML. No limits. Just data. Click to get it now.
> http://sourceforge.net/powerbar/db2/
> _______________________________________________
> Libusb-win32-devel mailing list
> Lib...@li...
> https://lists.sourceforge.net/lists/listinfo/libusb-win32-devel
> 


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Re: [Libusb-win32-devel] libusb with borland c-builder

[25an <man...@gm...>]

Thanks for your quick reply
This is what I did to make It work

In the file usb.h I changed the line where

#include <pshpack1.h>

with

#pragma pack(push, 1)

and at the line where

#include <poppack.h>

with

#pragma pack(pop, 1)

I get some warnings but I will leave them so far

Stephan Meyer wrote:
> 
> 
> See
> http://www.nabble.com/Error-compiling-test-program-tf3508594.html#a9870106
> 
>> 
>> 
>> Hi!
>> 
>> I have just started to use the libusb-win32, I am trying to get it to
>> work
>> with borland c-builder 6 on win XP.
>> If I run the test application testlibusb-win.exe It works just fine but
>> when
>> I take the code and change it for the c-builder I get a problem no mather
>> what I do I cant read the configure descriptor in the usb_device struct
>> the
>> code that I am using is this:
>> 
>> __fastcall TForm1::TForm1(TComponent* Owner)
>>   : TForm(Owner)
>> {
>>   //these method is called whene the GUI is created
>>   usb_init();
>>   usb_find_busses();
>>   usb_find_devices();
>> }
>> //---------------------------------------------------------------------------
>> 
>> void __fastcall TForm1::Button1Click(TObject *Sender)
>> {
>>   // whene button1 on the gui is pushed this method is executed
>>   version = usb_get_version();
>> 
>>   if(version)
>>   {
>>     line = "DLL version:\t";
>>     line += version->dll.major;
>>     line += ".";
>>     line += version->dll.minor;
>>     line += ".";
>>     line += version->dll.micro;
>>     line += ".";
>>     line += version->dll.nano;
>> 
>>     this->Memo1->Lines->Add(line);
>> 
>>     line = "Driver version:\t";
>>     line += version->driver.major;
>>     line += ".";
>>     line += version->driver.minor;
>>     line += ".";
>>     line += version->driver.micro;
>>     line += ".";
>>     line += version->driver.nano;
>> 
>>     this->Memo1->Lines->Add(line);
>>   }
>> 
>>   this->Memo1->Lines->Add("bus/device\t idVendor/idProduct");
>> 
>>   for (bus = usb_get_busses(); bus; bus = bus->next) {
>>     for (dev = bus->devices; dev; dev = dev->next) {
>>       int ret, i;
>>       char string[256];
>>       usb_dev_handle *udev;
>> 
>>       line = bus->dirname;
>>       line += "/";
>>       line += dev->filename;
>>       line += "\t";
>>       line += IntToHex(dev->descriptor.idVendor,1);
>>       line += "/";
>>       line += IntToHex(dev->descriptor.idProduct,1);
>> 
>>       this->Memo1->Lines->Add(line);
>> 
>>       udev = usb_open(dev);
>> 
>>       if (udev) {
>>         if (dev->descriptor.iManufacturer) {
>>           ret = usb_get_string_simple(udev,
>> dev->descriptor.iManufacturer,
>>                                       string, sizeof(string));
>>           if (ret > 0) {
>>             line = "- Manufacturer : ";
>>             line += AnsiString(string);
>>             this->Memo1->Lines->Add(line);
>>           } else {
>>             this->Memo1->Lines->Add("- Unable to fetch manufacturer
>> string");
>>           }
>>         }
>> 
>>         if (dev->descriptor.iProduct) {
>>           ret = usb_get_string_simple(udev, dev->descriptor.iProduct,
>> string,
>>                                       sizeof(string));
>>           if (ret > 0) {
>>             line = "- Product : ";
>>             line += AnsiString(string);
>>             this->Memo1->Lines->Add(line);
>>           } else {
>>             this->Memo1->Lines->Add("- Unable to fetch product string");
>>           }
>>         }
>> 
>>         if (dev->descriptor.iSerialNumber) {
>>           ret = usb_get_string_simple(udev,
>> dev->descriptor.iSerialNumber, 
>>                                       string, sizeof(string));
>>           if (ret > 0) {
>>             line = "- Serial number : ";
>>             line += AnsiString(string);
>>             this->Memo1->Lines->Add(line);
>>           } else {
>>             this->Memo1->Lines->Add("- Unable to fetch serial number
>> string");
>>           }
>>         }
>> 
>>         usb_close (udev);
>>       }
>> 
>>       if (!dev->config) {
>>         this->Memo1->Lines->Add("  Couldn't retrieve descriptors");
>>         continue;
>>       }
>> 
>>       i = 0;
>>       for (i = 0; i < dev->descriptor.bNumConfigurations; i++)
>>         print_configuration(&dev->config[i]);
>>     }
>>   }
>> }
>> //---------------------------------------------------------------------------
>> void TForm1::print_configuration(struct usb_config_descriptor *config)
>> {
>>   int i;
>>   //!!!!!!!The error occur here!!!!!!!!//
>>   unsigned short wtlength = config->wTotalLength; //<======== When I am
>> trying to get any variable in the configure descriptor
>> 
>>   line = "  wTotalLength:         ";
>>   line += wtlength;
>> 
>>   this->Memo1->Lines->Add(line);
>>  
>> }
>> 
>> the error that I get is accsses violation.
>> 
>> -- 
>> View this message in context:
>> http://www.nabble.com/libusb-with-borland-c-builder-tf3827103.html#a10833779
>> Sent from the LibUSB Dev - Win32 mailing list archive at Nabble.com.
>> 
>> 
>> -------------------------------------------------------------------------
>> This SF.net email is sponsored by DB2 Express
>> Download DB2 Express C - the FREE version of DB2 express and take
>> control of your XML. No limits. Just data. Click to get it now.
>> http://sourceforge.net/powerbar/db2/
>> _______________________________________________
>> Libusb-win32-devel mailing list
>> Lib...@li...
>> https://lists.sourceforge.net/lists/listinfo/libusb-win32-devel
>> 
> 
> 
> _______________________________________________________________
> SMS schreiben mit WEB.DE FreeMail - einfach, schnell und
> kostenguenstig. Jetzt gleich testen! http://f.web.de/?mc=021192
> 
> 
> -------------------------------------------------------------------------
> This SF.net email is sponsored by DB2 Express
> Download DB2 Express C - the FREE version of DB2 express and take
> control of your XML. No limits. Just data. Click to get it now.
> http://sourceforge.net/powerbar/db2/
> _______________________________________________
> Libusb-win32-devel mailing list
> Lib...@li...
> https://lists.sourceforge.net/lists/listinfo/libusb-win32-devel
> 
> 

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