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DScat
Beginner
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Problems with HS-UART driver for ACPI\VEN_INT&DEV_3512 device used in Apolo Lake board on Windows 10 64 bits

Hello All,

I´m working in a program to read/write serial COM devices. It works correctly with any COM ports and with USB-COM devices, but in this board using UartSub Device drivers from Intel, I have detected some problems in the next Win32 API methods that I use from Windows API (https://docs.microsoft.com/en-us/previous-versions/ms810467(v=msdn.10)):

  • Problem 1: After opening correctly COM port I´m trying to call SetupComm(hCom, 1024, 1024); with valid handle returned but it fails with next error: SetupComm failed with error 31: A device attached to the system is not functioning.
  • Problem 2: When calling ClearCommError(hCom, &dwErrorFlags, &ComStat) and check value returned in ComStat.cbInQue from COMSTAT struct, sometimes in cbInQue the devices is returning invalid values (83886080 bytes or -1460703136 bytes ...)

 

Any ideas or additional tests to do ? I found for new drivers but it seems this is the lastest. The source code used in my program is based on samples of Microsoft and you can see a similar reference in this page: https://wangbaiyuan.cn/en/c-serial-communication-write-reading-2.html

 

Thank you in advance for your help

Best Regards

Jorge

 

PS: I attached a picture with COM devices that apparently are installed correctly in Device Manager and we can open/close port correctly.

DeviceManager.PNG

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1 Reply
Zahar_K_
Beginner
357 Views

Hello Jorge!

Did you resolve this issue? How?

We have the same problem on our board with Skylake and x64 Windows 10.

Thanks!

Best regards, Danilov Igor.

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