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