[ECOS] quetions about tcgetattr()

[Jonathan Larmour]

li hui wrote:
> 
> I had writen a short program. I use function
> cyg_io_lookup("dev/tty0",handle) to get the device
> handle, and then i use function
> tcgetattr(handle,&termios) to get the runtime
> parametres, but it is failed. I was puzzled by this
> problem!
> I really get the device handle successfully, why i
> can't get the device tuntime parameters by using
> tcgetattr() funtion?

The first argument to tcgetattr() is a file descriptor, as returned by the
POSIX function open(), not a handle as returned by cyg_io_lookup().

You should instead use open() to open /dev/termios0 (look in the termios
configuration options to see the mapping between termios devices and the
underlying real serial devices).

Jifl
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