Serial Port C Example __link__ Jun 2026

TCSANOW changes occur immediately.

This example opens the serial port /dev/ttyUSB0 , configures it to 9600 bps, 8 data bits, no parity, and 1 stop bit, writes the string "Hello, serial port!" to the serial port, reads data from the serial port, and prints it to the console. serial port c example

| Field | Purpose | |--------------|------------------------------------------------| | c_cflag | Control flags: baud rate, parity, stop bits, CS8/CS7, hardware flow control. | | c_iflag | Input flags: handling of BREAK, parity errors, flow control (software). | | c_oflag | Output flags: output processing (usually set to 0 for raw data). | | c_lflag | Local flags: echoing, signals, canonical mode. | | c_cc[NCCS] | Control characters: VMIN, VTIME for read timeouts. | | c_ispeed | Input baud rate (separate or via cfsetispeed). | | c_ospeed | Output baud rate. | TCSANOW changes occur immediately