Operation of Serenum and Serial

This section includes the following topics about operating Serenum and Serial:

Serenum Filtering of I/O Requests

Enumerating Serenum Devices

Enumerating Legacy COM Ports

External Naming of COM Ports

Opening and Initializing a Serial Device

Opening and Initializing a 16550 UART-Compatible Interface

Sharing a Serial Device Interrupt

Powering Up a Serial Device

Setting Read and Write Timeouts for a Serial Device

Removing a Plug and Play Serial Device on an RS-232 Port

Removing a Plug and Play RS-232 Port

Serial Device Control Requests

Determining Which COM Port a Debugger Uses

For more information about operating Serenum and Serial, see the following resources:

• ntddser header

• Serial Port Driver Reference

• Sample code in the \src\kernel\serial and \src\kernel\serenum directories in the Windows Driver Kit (WDK) https://github.com/Microsoft/Windows-driver-samples/tree/main/serial/serenum

• Communications resources that are supported by the Windows Base Services in the Microsoft Windows SDK