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can't find name of serial device


Hi
I have a pretty basic problem: The example serial uses the function
err = cyg_io_lookup( "/dev/haldiag", &handle ).
The program works, but now I want to change it for output on UART 0 of my AT91SAM7X-EK. I have tried everything - such as console, tty0 tty1 and other instead of haldiag. It does not work, it always return -2 as a result, telling me it can not find the driver. What is the correct name to use?


Thanks and regards Robert

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