void serial_read(int fd, char *buffer, size_t buf_size) ssize_t n = read(fd, buffer, buf_size - 1); if (n < 0) perror("read"); else if (n > 0) buffer[n] = '\0'; printf("Read %ld bytes: %s\n", n, buffer);
printf("Serial port %s opened at 115200 baud\n", device); serial port c example
Here’s a practical for serial port communication on Linux/POSIX systems. It demonstrates opening, configuring, reading, writing, and closing a serial port. Serial Port Communication in C – Complete Example #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 int serial_open(const char *device, speed_t baud) ECHOE void serial_read(int fd