1 /* 2 * PROJECT: ReactOS KDBG Kernel Debugger Terminal Driver 3 * LICENSE: GPL-2.0-or-later (https://spdx.org/licenses/GPL-2.0-or-later) 4 * PURPOSE: Serial driver 5 * COPYRIGHT: Copyright 2004 Art Yerkes <ayerkes@speakeasy.net> 6 * Copyright 2005 Gregor Anich <blight@blight.eu.org> 7 */ 8 9 /* INCLUDES ******************************************************************/ 10 11 #include <ntoskrnl.h> 12 #include "kd.h" 13 14 /* FUNCTIONS *****************************************************************/ 15 16 VOID 17 KdbpSendCommandSerial( 18 _In_ PCSTR Command) 19 { 20 while (*Command) 21 KdPortPutByteEx(&SerialPortInfo, *Command++); 22 } 23 24 CHAR 25 KdbpTryGetCharSerial( 26 _In_ ULONG Retry) 27 { 28 CHAR Result = -1; 29 30 if (Retry == 0) 31 while (!KdPortGetByteEx(&SerialPortInfo, (PUCHAR)&Result)); 32 else 33 while (!KdPortGetByteEx(&SerialPortInfo, (PUCHAR)&Result) && Retry-- > 0); 34 35 return Result; 36 } 37 38 /* EOF */ 39