ntoskrnl/kdbg/kdb_serial.c

   1 /*
   2  * COPYRIGHT:       See COPYING in the top level directory
   3  * PROJECT:         ReactOS kernel
   4  * FILE:            ntoskrnl/dbg/kdb_serial.c
   5  * PURPOSE:         Serial driver
   6  *
   7  * PROGRAMMERS:     Victor Kirhenshtein (sauros@iname.com)
   8  *                  Jason Filby (jasonfilby@yahoo.com)
   9  *                  arty
  10  */
  11
  12 /* INCLUDES ****************************************************************/
  13
  14 #include <ntoskrnl.h>
  15 #define NDEBUG
  16 #include <debug.h>
  17
  18 CHAR
  19 KdbpTryGetCharSerial(ULONG Retry)
  20 {
  21     CHAR Result = -1;
  22
  23     if (Retry == 0)
  24         while (!KdPortGetByteEx(&SerialPortInfo, (PUCHAR)&Result));
  25     else
  26         while (!KdPortGetByteEx(&SerialPortInfo, (PUCHAR)&Result) && Retry-- > 0);
  27
  28     return Result;
  29 }