#include <stdio.h>   /* Standard input/output definitions */
#include <string.h>  /* String function definitions */
#include <unistd.h>  /* UNIX standard function definitions */
#include <fcntl.h>   /* File control definitions */
#include <errno.h>   /* Error number definitions */
#include <termios.h> /* POSIX terminal control definitions */

int main (void)
{
    //open serial device
    int fd;
    fd = open("/dev/ttyS1", O_RDWR | O_NOCTTY | O_NDELAY);
    if (fd == -1)
    {
        perror("open_port: Unable to open /dev/ttyS0 - ");
    }
    else
        fcntl(fd, F_SETFL, 0);
    //Set baudrate to 19200
    struct termios options;
    tcgetattr(fd, &options);
    cfsetispeed(&options, B19200);
    cfsetospeed(&options, B19200);
    options.c_cflag |= (CLOCAL | CREAD);
    tcsetattr(fd, TCSANOW, &options);

    //Write text
    int n;
    n = write(fd, "Hello world!\r", 13);
    if (n < 0)
        fputs("write() failed!\n", stderr);

    n = write(fd, "Printed using the VoCore v1.0\r", 30);
    if (n < 0)
        fputs("write() failed!\n", stderr);

    n = write(fd, ":)\r", 3);
    if (n < 0)
        fputs("write() failed!\n", stderr);

    //close connection
    close(fd);
    return printf("End\n");
}