C Example: Serial Port

#include #include #include // File control definitions #include // Error number definitions #include // POSIX terminal control definitions #include // UNIX standard function definitions int main() = CS8; // 8 bits per byte tty.c_cflag &= ~CRTSCTS; // Disable hardware flow control tty.c_cflag Use code with caution. Critical Configuration Details 1. The Baud Rate

#include <stdio.h> // Standard I/O #include <stdlib.h> // Exit functions #include <fcntl.h> // File control (open) #include <termios.h> // Terminal I/O (serial config) #include <unistd.h> // POSIX (read, write, close) #include <string.h> // String operations serial port c example

int serial_open(const char *device, speed_t baud) IXOFF // Standard I/O #include &lt

int fd = serial_open(device, baud); if (fd < 0) return EXIT_FAILURE; // Exit functions #include &lt

echo "Hello Serial" > /dev/ttyUSB0 cat /dev/ttyUSB0 # Should see "Hello Serial" echoed back