From 574e8bdd9d61a67d0c2128b511c0ae6b464b2559 Mon Sep 17 00:00:00 2001
From: Laurent Vivier <Laurent@lvivier.info>
Date: Mon, 21 Jun 2004 22:39:25 +0000
Subject: [PATCH] Serial port management

---
 second/serial.c | 226 ++++++++++++++++++++++++++++++++++++++++++++++++
 second/serial.h |  11 +++
 2 files changed, 237 insertions(+)
 create mode 100644 second/serial.c
 create mode 100644 second/serial.h

diff --git a/second/serial.c b/second/serial.c
new file mode 100644
index 0000000..8d95706
--- /dev/null
+++ b/second/serial.c
@@ -0,0 +1,226 @@
+/*
+ * 
+ * (c) 2004 Laurent Vivier <LaurentVivier@wanadoo.fr>
+ *
+ */
+
+#include <string.h>
+#include <unistd.h>
+
+#include "misc.h"
+#include "glue.h"
+
+/*
+ * Technical Note TN1119 "Serial Port Apocrypha"
+ *
+ * from http://developer.apple.com/technotes/tn/tn1119.html
+ *
+ * Inside Macintosh, Devices, "Using the Serial Driver" :
+ *
+ * http://developer.apple.com/documentation/mac/Devices/Devices-315.html
+ *
+ * OpenDriver:
+ *
+ * http://developer.apple.com/documentation/mac/Devices/Devices-23.html
+ *
+ */
+
+/*
+ *
+ * ".AOut" Serial port A (modem) output
+ * ".AIn" Serial port A (modem) input
+ * ".BOut" Serial port B (printer) output
+ * ".BIn" Serial port B (printer) input
+ *
+ */
+
+OSErr OpenDriver(ConstStr255Param name, short *drvrRefNum)
+{
+	OSErr err;
+	ParamBlockRec param;
+
+	memset(&param, 0, sizeof(ParamBlockRec));
+
+	param.ioNamePtr = (u_int32_t)name;
+	param.ioPermssn = fsCurPerm;
+
+	err = PBOpenSync(&param);
+	if (err != noErr)
+		return err;
+
+	*drvrRefNum = param.ioRefNum;
+
+	return param.ioResult;
+}
+
+OSErr CloseDriver(short refNum)
+{
+	OSErr err;
+	ParamBlockRec param;
+
+	memset(&param, 0, sizeof(ParamBlockRec));
+
+	param.ioRefNum = refNum;
+
+	err = PBCloseSync(&param);
+	if (err != noErr)
+		return err;
+
+	return param.ioResult;
+}
+
+int setserial(short refNum, unsigned int bitrate, unsigned int datasize, 
+			    int parity, int stopbits)
+{
+	CntrlParam param;
+	short seropts;
+	int res;
+
+	switch(bitrate)
+	{
+		case 150:
+			seropts = baud150;
+			break;
+
+		case 300:
+			seropts = baud300;
+			break;
+
+		case 600:
+			seropts = baud600;
+			break;
+
+		case 1200:
+			seropts = baud1200;
+			break;
+
+		case 1800:
+			seropts = baud1800;
+			break;
+
+		case 2400:
+			seropts = baud2400;
+			break;
+
+		case 3600:
+			seropts = baud3600;
+			break;
+
+		case 4800:
+			seropts = baud3600;
+			break;
+
+		case 7200:
+			seropts = baud7200;
+			break;
+
+		case 9600:
+			seropts = baud9600;
+			break;
+
+		case 14400:
+			seropts = baud14400;
+			break;
+
+		case 19200:
+			seropts = baud19200;
+			break;
+
+		case 28800:
+			seropts = baud28800;
+			break;
+
+		case 38400:
+			seropts = baud38400;
+			break;
+
+		case 57600:
+			seropts = baud57600;
+			break;
+
+		default:
+			seropts = baud9600;
+			break;
+	}
+
+	switch(datasize)
+	{
+		case 5:
+			seropts |= data5;
+			break;
+
+		case 6:
+			seropts |= data6;
+			break;
+
+		case 7:
+			seropts |= data7;
+			break;
+
+		case 8:
+			seropts |= data8;
+			break;
+
+		default:
+			seropts |= data8;
+			break;
+	}
+
+	switch(parity)
+	{
+		case 0:
+			seropts |= noParity;
+			break;
+
+		case 1:
+			seropts |= oddParity;
+			break;
+
+		case 2:
+			seropts |= evenParity;
+			break;
+	}
+
+	switch(stopbits)
+	{
+		case 0:
+			seropts |= stop10;
+			break;
+
+		case 1:
+			seropts |= stop15;
+			break;
+
+		case 2:
+			seropts |= stop20;
+			break;
+	}
+
+	param.csCode = kSERDConfiguration;
+	param.csParam[0] = seropts;
+	param.ioCRefNum = refNum;
+	param.ioVRefNum = 0;
+	param.ioCompletion = 0;
+	res = PBControlSync((ParmBlkPtr)&param);
+
+	return res;
+}
+
+ssize_t write(int fd, const void *buf, size_t count)
+{
+	int res;
+	ParamBlockRec param;
+
+	param.ioCompletion = 0;
+	param.ioVRefNum = 0;
+	param.ioRefNum = fd;
+	param.ioBuffer = (u_int32_t)buf;
+	param.ioReqCount= count;
+	param.ioPosMode = fsAtMark;
+	param.ioPosOffset = 0;
+	res = PBWriteSync(&param);
+	if (res != noErr)
+		return 0;
+	
+	return param.ioActCount;
+}
diff --git a/second/serial.h b/second/serial.h
new file mode 100644
index 0000000..e6f2807
--- /dev/null
+++ b/second/serial.h
@@ -0,0 +1,11 @@
+/*
+ * 
+ * (c) 2004 Laurent Vivier <LaurentVivier@wanadoo.fr>
+ *
+ */
+
+OSErr OpenDriver(ConstStr255Param name, short *drvrRefNum);
+OSErr CloseDriver(short refNum);
+
+extern int setserial(short refNum, unsigned int bitrate, unsigned int datasize,
+                            int parity, int stopbits);