WindowsApi:SerialCommunications

lastmod 2026-11-10created 2017-01-045 edits

Serial communication in the Windows API works by opening a COM port like a file and exchanging data through it. You open the port with CreateFile, set the baud rate, parity, and stop bits with the DCB structure and SetCommState, set timeouts with SetCommTimeouts, and then do I/O with ReadFile and WriteFile. It is the Windows-side interface corresponding to POSIX termios.

See also

• Serial Communication
• POSIX:termios
• Minicom
• Software flow control

Favorite site

• MSDN - Serial Communications