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Fatal Error: 8, 3, USB device open fails.

Started by cbugeiro, May 16, 2018, 12:24:48 am

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cbugeiro

Hello, I need to use a code bar reader in a Builder c++ program. So I tried your library using your demos and I sucessfully installed the driver replacing the standard driver, but when I tried to open the device I get this error  Fatal Error: 8, 3, USB device open fails in the log file. Rad Studio 10.2 SO. Windows 7 64. Can you give any hint why this can happen?
TIA.

Roman Novgorodov

Hello

Please show me log file with error info.

Roman Novgorodov
DeepSoftware llc
DeepSoftware llc - The professional components for Delphi/CBuilder/.NET. The high quality custom software development.
Forums.nrCommLib.Com - DeepSoftware Tech Support Forum.

cbugeiro

Thank you for fast reponse!

Here is!



[15/05/2018 23:26:56] nrComm Lib v9.18 Pro  (TRIAL! Please register!) Windows 7 [6.1.7601] Service Pack 1
[15/05/2018 23:26:56] EnumDisks GetDiVolums: C\0Dh\0AhD\0Dh\0AhE\0Dh\0AhF\0Dh\0Ah
[15/05/2018 23:27:13] EnumDisks GetDiVolums: C\0Dh\0AhD\0Dh\0AhE\0Dh\0AhF\0Dh\0Ah
[15/05/2018 23:27:13] EnumDisks GetDiVolums: C\0Dh\0AhD\0Dh\0AhE\0Dh\0AhF\0Dh\0Ah
[15/05/2018 23:27:13] EnumDisks GetDiVolums: C\0Dh\0AhD\0Dh\0AhE\0Dh\0AhF\0Dh\0Ah
[15/05/2018 23:27:13] EnumDisks GetDiVolums: C\0Dh\0AhD\0Dh\0AhE\0Dh\0AhF\0Dh\0Ah
[15/05/2018 23:27:35] Fatal Error: 8, 3, USB device open fails.
[15/05/2018 23:27:43] Fatal Error: 8, 3, USB device open fails.
[15/05/2018 23:48:18] nrComm Lib v9.18 Pro  (TRIAL! Please register!) Windows 7 [6.1.7601] Service Pack 1
[15/05/2018 23:48:18] EnumDisks GetDiVolums: A\0Dh\0AhC\0Dh\0AhE\0Dh\0AhG\0Dh\0AhH\0Dh\0AhK\0Dh\0AhL\0Dh\0Ah
[15/05/2018 23:49:17] EnumDisks GetDiVolums: A\0Dh\0AhC\0Dh\0AhE\0Dh\0AhG\0Dh\0AhH\0Dh\0AhK\0Dh\0AhL\0Dh\0Ah
[15/05/2018 23:49:18] EnumDisks GetDiVolums: A\0Dh\0AhC\0Dh\0AhE\0Dh\0AhG\0Dh\0AhH\0Dh\0AhK\0Dh\0AhL\0Dh\0Ah
[15/05/2018 23:49:18] EnumDisks GetDiVolums: A\0Dh\0AhC\0Dh\0AhE\0Dh\0AhG\0Dh\0AhH\0Dh\0AhK\0Dh\0AhL\0Dh\0Ah


Roman Novgorodov

Hello

Thank you for information.

Code 3 means Path not found system error.
Possible something wrong with usb pipe name or installed driver is not valid for your device or your windows.

What strings do you see in pipe names in USBDeviceDemo for necessary device?
Also give me Windows version and more info about barcode reader.

Roman Novgorodov
DeepSoftware llc
DeepSoftware llc - The professional components for Delphi/CBuilder/.NET. The high quality custom software development.
Forums.nrCommLib.Com - DeepSoftware Tech Support Forum.

cbugeiro

Hi! I find out where the problem is, thanks to your answer. I just reset the scanner to its factory defauts and now its working. I will register soon.
Thank you again.
Regards.

cbugeiro

In one machine worked , when I go back to original I still get the same result.

[18/05/2018 18:46:45] nrComm Lib v9.18 Pro  (TRIAL! Please register!) Windows 7 [6.1.7601] Service Pack 1
[18/05/2018 18:46:45] EnumDisks GetDiVolums: C\0Dh\0AhD\0Dh\0AhE\0Dh\0AhF\0Dh\0AhG\0Dh\0AhH\0Dh\0AhI\0Dh\0Ah
[18/05/2018 18:47:01] EnumDisks GetDiVolums: C\0Dh\0AhD\0Dh\0AhE\0Dh\0AhF\0Dh\0AhG\0Dh\0AhH\0Dh\0AhI\0Dh\0Ah
[18/05/2018 18:47:01] EnumDisks GetDiVolums: C\0Dh\0AhD\0Dh\0AhE\0Dh\0AhF\0Dh\0AhG\0Dh\0AhH\0Dh\0AhI\0Dh\0Ah
[18/05/2018 18:47:01] EnumDisks GetDiVolums: C\0Dh\0AhD\0Dh\0AhE\0Dh\0AhF\0Dh\0AhG\0Dh\0AhH\0Dh\0AhI\0Dh\0Ah
[18/05/2018 18:47:01] EnumDisks GetDiVolums: C\0Dh\0AhD\0Dh\0AhE\0Dh\0AhF\0Dh\0AhG\0Dh\0AhH\0Dh\0AhI\0Dh\0Ah
[18/05/2018 18:47:08] Fatal Error: 8, 3, USB device open fails.

Pipe [1] Interrupt 64 IN
Pipe [2] Interrupt 64 OUT
Pipe [1] Interrupt 64 IN
Pipe [4] Interrupt 64 OUT

Barcode Unitech MS846

Thank you