tcgetattr problem

[ahnkle <cygwin at ekers dot idps dot co dot uk>]

hi

I wrote a small program to test some serial stuff. I was puzzled because I recall
that I was able to set baud rate on a serial port before, but now I cannot.

I call tcgetattr() after I open the serial port, but it fails (the tcsetattr() also
fails which first got my attention).

I enclose a short example, and cygwin details, too. Any ideas?

regards,
ahnkle

Attachment: cygcheck.out
Description: Text document

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

#ifndef PORT
#define PORT "com1"
#endif

int
main(int argc, char** argv)
{
  int fd;
  fd = open(PORT, O_RDWR | O_NOCTTY );
  if (fd < 0)
  {
    perror(PORT); return -1;
  }
  else
  {
    struct termios oldtio;
    int rc = tcgetattr(fd,&oldtio); /* save current port settings */
    if (rc != 0)
    {
      printf("ERROR: tcgetattr returned %i (errno=%i)\n", rc, errno);
      return -1;
    }
    
    close(fd);
  }
  return 0;
}

// Local variables:
// compile-command: "gcc -g -Wall test1.cpp -o test1"
// End:

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