This uses Windows API (CreateFile, ReadFile, WriteFile) on Windows and POSIX termios on Unix systems.
Such script configures 8N1 (8 data bits, no parity, 1 stop bit) with hardware flow control disabled, supports standard baud rates from 9600 to 921600, uses overlapped I/O semantics on Windows and O_NONBLOCK on Unix to prevent blocking during read operations, provides real-time bidirectional communication with commands for sending raw hex data (:hex) and text, automatically detects and displays received data in appropriate format (ASCII or hex dump), and proper allocation/deallocation of serial handle structures with error checking.
Does a graceful shutdown on SIGINT/SIGTERM with proper resource cleanup.
Compilation;
- Windows:
gcc -o serial_tool serial_tool.c - Linux/Unix:
gcc -o serial_tool serial_tool.c
Examples;
- Windows:
serial_tool.exe COM3 115200 - Linux:
./serial_tool /dev/ttyUSB0 115200