From 1a30a6f3480b6a5aae015d9eacf173527a615886 Mon Sep 17 00:00:00 2001
From: jesusc <jesusc@4a8a32a2-be11-0410-ad9d-d568d2c75423>
Date: Tue, 24 Oct 2006 08:20:54 +0000
Subject: [PATCH] Added device/lib/serial_io.c: Default putchar() and getchar()
 for mcs51 uses serial port.

git-svn-id: https://sdcc.svn.sourceforge.net/svnroot/sdcc/trunk/sdcc@4433 4a8a32a2-be11-0410-ad9d-d568d2c75423
---
 ChangeLog              |  5 ++++
 device/lib/Makefile.in |  2 +-
 device/lib/libsdcc.lib |  1 +
 device/lib/serial_io.c | 61 ++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 68 insertions(+), 1 deletion(-)
 create mode 100644 device/lib/serial_io.c

diff --git a/ChangeLog b/ChangeLog
index 9612f9af..776b3728 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2006-10-24 Jesus Calvino-Fraga <jesusc at ece.ubc.ca>
+
+	* device/lib/serial_io.c: Default putchar() and getchar() for
+	  mcs51 uses serial port.
+
 2006-10-23 Maarten Brock <sourceforge.brock AT dse.nl>
 
 	* src/mcs51/gen.c (movc): improved check for 0 and 1, see RFE 1582704
diff --git a/device/lib/Makefile.in b/device/lib/Makefile.in
index a41c7d17..6a0ab9c1 100644
--- a/device/lib/Makefile.in
+++ b/device/lib/Makefile.in
@@ -69,7 +69,7 @@ OPT_DISABLE_Z80   = @OPT_DISABLE_Z80@
 SOURCES =	_autobaud.c _bp.c _decdptr.c \
 		_gptrget.c _gptrgetc.c _gptrput.c \
 		_ser.c _setjmp.c \
-		serial.c ser_ir.c \
+		serial.c serial_io.c ser_ir.c \
 		_atof.c _atoi.c _atol.c _itoa.c _ltoa.c \
 		_schar2fs.c _sint2fs.c _slong2fs.c \
 		_uchar2fs.c _uint2fs.c _ulong2fs.c \
diff --git a/device/lib/libsdcc.lib b/device/lib/libsdcc.lib
index eaad6ac5..fc6cf879 100644
--- a/device/lib/libsdcc.lib
+++ b/device/lib/libsdcc.lib
@@ -44,6 +44,7 @@ malloc
 realloc
 free
 serial
+serial_io
 _autobaud
 _startup
 _ser
diff --git a/device/lib/serial_io.c b/device/lib/serial_io.c
new file mode 100644
index 00000000..29ad7460
--- /dev/null
+++ b/device/lib/serial_io.c
@@ -0,0 +1,61 @@
+/* Default putchar and getchar to the serial port
+
+   Written By -  Jesus Calvino-Fraga (October/2006)
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+*/
+
+#ifdef SDCC_mcs51
+#include <8051.h>
+
+bit serial_init_flag=0;
+
+void init_serial (void)
+{
+	TR1=0;
+	TMOD=(TMOD&0x0f)|0x20;
+	PCON|=0x80;
+	TH1=TL1=0xff; //115200 baud with a 22MHz crystal 
+	TR1=1;
+	SCON=0x52;
+	serial_init_flag=1;
+}
+
+void putchar (char c)
+{
+	if(!serial_init_flag) init_serial();
+	if (c=='\n')
+	{
+		while (!TI);
+		TI=0;
+		SBUF='\r';
+	}
+	while (!TI);
+	TI=0;
+	SBUF=c;
+}
+
+char getchar (void)
+{
+	char c;
+	
+	if(!serial_init_flag) init_serial();
+
+	while (!RI);
+	RI=0;
+	c=SBUF;
+	return c;
+}
+#endif
-- 
2.30.2