Behavior of printf through jtag_uart directed to stdout

<div class='quotetop'>QUOTE (slacker @ Jul 17 2009, 10:11 AM) <{post_snapback}> (index.php?act=findpost&pid=23162)</div>

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This will happen if you don&#39;t have an interval timer defined as your system timer in your system.

- slacker[/b]

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Thank you very much Slacker.

I read one of your old post about the same problem. And I was trying this solution.

But how it works. Does the printf function use the system timer for a timeout ?

Which is the impact for a timing sensitive application ?

I&#39;m wondering which is the best way to do, if I want to have access to debugging message only when I connect a external cable.

Perhaps detecting the precense of the cable and the enabling the messages ?

Claude