[ts-7000] Problem in COM2 programming

["qabid" <>]

dear all,
I am working on TS-7300 board and want to test COM2 in loop backback mode. I 
connected pin 2 and 3 of COM2 and tested it with the following piece of code.
--
int main(void)
    {
    // Open serial port ttyAM1 Serial Port
    //
    int fd,n,i;
    struct termios options;
    char buf[255],*bufptr;

    fd = open ("/dev/ttyAM1", O_RDWR | O_NOCTTY | O_NONBLOCK | O_NDELAY);
    if (fd == -1)
    {
    perror ("Open port /dev/ttyAM1 failure\n");
    exit (-1);
    }
    tcgetattr(fd,&options);
    /* Set Baud rate to 115200
    *******************************************/
    cfsetispeed(&options, B57600);
    cfsetospeed(&options, B57600);
    /* Set Parity to 8-N-1
    ***********************************************/
    options.c_cflag &= ~PARENB;
    options.c_cflag &= ~CSTOPB;
    options.c_cflag &= ~CSIZE;
    options.c_cflag |= CS8;
    /* Enable the receiver and set local mode
    ****************************/
    options.c_cflag |= ( CLOCAL | CREAD);
    /* Set Flow control to none
    ******************************************/
    options.c_cflag &= ~(IXON | IXOFF | IXANY);
    /* Set read to raw input
    *********************************************/
    //options.c_lflag &= (ICANON | ECHO | ECHOE | ISIG);
    /* Set Raw Output
    options.c_oflag &= ~OPOST;
    /* Write options
    *****************************************************/
    tcsetattr(fd,TCSANOW,&options);

    n = write(fd,"Hello World Hello World Hello World  XXXXXXXXXXXXXXXXXXX 
ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ\r\n",128);
    printf("Bytes written %i\n",n);

    /* Read input until CR or NL or Buffer full
    **************************/
    i = 1;
    buf[0] = 0;
    while (i == 1)
    {
    n = read(fd,buf,255);
    //printf("buf = %s n = %i\n",buf,n);
    if (n > 0)
    break;
    }

    printf("Result is n = %i char = %s\n",n,buf);
    close(fd);

    }
--
I received the following output.
Bytes written -1
Result is n = 1 char =
�*

It looks that write to the port fails. Can anybody help me out?

Saleem




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