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quetions about tcgetattr()


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?
 

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