[En-Nut-Discussion] Loosing characters on debug interface (uart) using printf

Ole Reinhardt ole.reinhardt at kernelconcepts.de
Mon Jun 7 15:07:29 CEST 2004


I noticed a strange behavior of Nut/Os when I'm using printf.

I first register devDebug0 and assign it as stdout:

NutRegisterDevice(&devDebug0, 0, 0);
freopen("uart0", "w", stdout);
_ioctl(_fileno(stdout), UART_SETSPEED, &baud);

When I now use printf the output is written to uart0. But I often loose
characters or even whole strings. Especially while producing high output

Is this a known problem or normal behavior? Any fixes or workarounds?


Ole Reinhardt

kernel concepts    Tel: +49-271-771091-14
Dreisbachstr. 24   Fax: +49-271-771091-19
D-57250 Netphen    E+ : +49-177-7420433

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