[En-Nut-Discussion] Uart fopen problem

[Thiago A. Corrêa]

Hi,

   I´ve noticed that if I open the uart? with "rw+b" mode, the device
either freezes or sometimes resets itself after an _ioctl() call. I
was able to reproduce the problem on the rs232d sample, by changing
the line:
        cd.cd_tcpip = _fdopen((int) sock, "r+b");
to
        cd.cd_tcpip = _fdopen((int) sock, "rw+b");

   Is this behavior somehow indended/documented? Or simply a bug?

   Using an ethernut 1.3g design, compiled with icc 6.31A

Regards,
   Thiago A. Corrêa