[ts-7000] Re: tcgetattr problem

["Rob" <>]

Thanks for the info.  It is a serial port because other routines in the program 
read data off 
the GPS if I manually set the baud rate with "stty -F /dev/ttyAM1 speed 19200" 
(yes this 
GPS is not running 4800).  The only two routines that fail are configuration 
and 
read_configuration.  On your suggestion to check for errors I added

char    err_str[256];

result = tcgetattr (file_id, &options);
if(result != 0)
{
    printf("Error of %d calling tcgetattr\n", result);
    perror(err_str);
}

I get no reported error but the same bad values.

Thanks for the suggestions so far.
Rob

--- In  "Don W. Carr" <> wrote:
>
> First, always check for errors. Capture the return value, and if it is not 0
> (success), then call perror(), to print the error. You must check errors on
> these types of functions and handle them, otherwise, the bigger the program,
> the more likely that you will have mysterious unknown errors at times that
> you can not figure out. For this particular call, you can not call on any
> old fd, it much be a serial port. You might get the error, not a tty or
> something like that as I recall. As I recall, I typically call isatty() to
> check to see if the fd is valid for setting baud rate, before continuing.
> 
> Hope that helps!
> 
> Don.
> 
> 
> 
> 
> -- 
> Dr. Don W. Carr
> J. G. Montenegro 2258
> Guadalajara, Mexico
> +52-333-630-0704
> +52-333-836-4500 ext 2930
>




 
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