[ts-7000] troubleshooting COM2 code

["lerougegorge" <>]

I wrote the C program below to echo characters received on COM2 (19200 8N1) to the standard out, but I seem to be having the following problems:

1. It always drops the first character.
2. It only echoes about 15 - 20 characters (it varies).
3. It then outputs some random looking data (e.g. 0x1842C202) and then stops echoing.

I tested this by connecting via telnet and connecting COM2 to my computers' serial ports.  I tried this on both a windows machine with hyperterm and an Ubuntu machine with Minicom.  Anyone have any idea what is wrong?

#include <stdio.h>
#include <termios.h>
#include <fcntl.h>
#include <unistd.h>

int main()
{
    printf("Echo program starting\n");
    
    //Open COM2
    int fd = open("/dev/ttyAM1", O_RDWR | O_NOCTTY | O_ND!
 ELAY);
    
    if(fd <= 0)
    {
        printf("Error, failed to open COM2\n");
        return 0;
    }
    
    //Set for COM2 19200 8N1, non-blocking reads
    struct termios options;
    tcgetattr(fd, &options);
  
    options.c_cflag     = CS8 | CLOCAL | CREAD;
    options.c_iflag     = IGNPAR;    
    options.c_oflag     = 0;
    options.c_lflag     = 0;
     options.c_cc[VTIME] = 0;
     options.c_cc[VMIN]  = 0;   

    cfsetispeed(&options, B19200);
    cfsetospeed(&options, B19200);
 &!
 nbsp;  
       tcflush(fd, TC!
 IFLUSH);
     tcsetattr(fd, TCSANOW, &options);
    
    //Loop indefinitely and echo
    while(1)
    {
        char c;
        if(read(fd, &c, 1) > 0)
            printf("received %c\n", c);
    }
}


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