add Matteo Pillon's lcdserializer ConnectionType patch to the hd44780 driver

server/drivers/hd44780-drivers.h

@@ -21,6 +21,7 @@
 # include "hd44780-bwct-usb.h"
 #endif
 #include "hd44780-picanlcd.h"
+#include "hd44780-lcdserializer.h"
 // add new connection type header files here
 
 static const ConnectionMapping connectionMapping[] = {
@@ -35,6 +36,7 @@ static const ConnectionMapping connectionMapping[] = {
 	{"winamp", hd_init_winamp, "\tnone\n"},
 #endif
 	{"picanlcd", hd_init_picanlcd, "\tnone\n"},
+	{"lcdserializer", hd_init_lcdserializer, "\tnone\n"},
 #ifdef HAVE_LIBUSB
 	{"bwctusb", hd_init_bwct_usb, "\tnone\n"},
 #endif

server/drivers/hd44780-lcdserializer.c

@@ -0,0 +1,133 @@
+/*
+ * LCD Serializer driver
+ * Modification of the code of the PIC-an-LCD driver
+ *
+ * Copyright (c)  1997, Matthias Prinke <m.prinke@trashcan.mcnet.de>
+ *		  1998, Richard Rognlie <rrognlie@gamerz.net>
+ * 		  1999, Ethan Dicks
+ *		  1999-2000, Benjamin Tse <blt@Comports.com>
+ *		  2001, Rene Wagner
+ *		  2001-2002, Joris Robijn <joris@robijn.net>
+ *                2005, Pillon Matteo <matteo.pillon@email.it>
+ *
+ * This file is released under the GNU General Public License. Refer to the
+ * COPYING file distributed with this package.
+ *
+ * LCD Serializer code and documentation:
+ * http://www.mindspring.com/~tcoonan/lcd.html
+ *
+ */
+
+#include "hd44780-lcdserializer.h"
+#include "hd44780-low.h"
+
+#include "report.h"
+
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+
+#include <stdio.h>
+#include <sys/types.h>
+#include <fcntl.h>
+#include <termios.h>
+
+#include <errno.h>
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+// Generally, any function that accesses the LCD control lines needs to be
+// implemented separately for each HW design. This is typically (but not
+// restricted to):
+// HD44780_senddata
+// HD44780_readkeypad
+
+void lcdserializer_HD44780_senddata (PrivateData *p, unsigned char displayID, unsigned char flags, unsigned char ch);
+void lcdserializer_HD44780_backlight (PrivateData *p, unsigned char state);
+unsigned char lcdserializer_HD44780_scankeypad (PrivateData *p);
+
+#define LCDSERIALIZER_LCDI '\xFE'
+
+#define DEFAULT_DEVICE		"/dev/lcd"
+
+// initialise the driver
+int
+hd_init_lcdserializer (Driver *drvthis)
+{
+	PrivateData *p = (PrivateData*) drvthis->private_data;
+
+	struct termios portset;
+	char device[256] = DEFAULT_DEVICE;
+
+	/* READ CONFIG FILE */
+
+	/* Get serial device to use */
+	strncpy(device, drvthis->config_get_string ( drvthis->name , "device" , 0 , DEFAULT_DEVICE),sizeof(device));
+	device[sizeof(device)-1]=0;
+	report (RPT_INFO,"HD44780: LCD Serializer: Using device: %s", device);
+
+	// Set up io port correctly, and open it...
+	p->fd = open(device, O_RDWR | O_NOCTTY | O_NDELAY);
+	if (p->fd == -1) {
+		report(RPT_ERR, "HD44780: LCD Serializer: could not open device %s (%s)\n", device, strerror(errno));
+		return -1;
+	}
+
+	/* Get serial device parameters */
+	tcgetattr(p->fd, &portset);
+
+	/* We use RAW mode */
+#ifdef HAVE_CFMAKERAW
+	/* The easy way */
+	cfmakeraw( &portset );
+#else
+	/* The hard way */
+	portset.c_iflag &= ~( IGNBRK | BRKINT | PARMRK | ISTRIP
+	                      | INLCR | IGNCR | ICRNL | IXON );
+	portset.c_oflag &= ~OPOST;
+	portset.c_lflag &= ~( ECHO | ECHONL | ICANON | ISIG | IEXTEN );
+	portset.c_cflag &= ~( CSIZE | PARENB | CRTSCTS );
+	portset.c_cflag |= CS8 | CREAD | CLOCAL ;
+#endif
+	/* Set port speed to 9600 baud */
+	cfsetospeed(&portset, B9600);
+
+	/* Set TCSANOW mode of serial device */
+	tcsetattr(p->fd, TCSANOW, &portset);
+
+	p->hd44780_functions->senddata = lcdserializer_HD44780_senddata;
+	p->hd44780_functions->backlight = lcdserializer_HD44780_backlight;
+	p->hd44780_functions->scankeypad = lcdserializer_HD44780_scankeypad;
+
+	common_init (p, IF_8BIT);
+
+	return 0;
+}
+
+void
+lcdserializer_HD44780_senddata (PrivateData *p, unsigned char displayID, unsigned char flags, unsigned char ch)
+{
+	static const char instr_byte = LCDSERIALIZER_LCDI;
+
+	if (flags == RS_DATA) {
+		write( p->fd, &ch, 1 );
+	}
+	else {
+		write( p->fd, &instr_byte, 1 );
+		write( p->fd, &ch, 1 );
+	}
+}
+
+void
+lcdserializer_HD44780_backlight (PrivateData *p, unsigned char state)
+{
+	/* No backlight control */
+}
+
+unsigned char
+lcdserializer_HD44780_scankeypad (PrivateData *p)
+{
+	return 0;
+}

server/drivers/hd44780-lcdserializer.h

@@ -0,0 +1,9 @@
+#ifndef HD_LCDSERIALIZER_H
+#define HD_LCDSERIALIZER_H
+
+#include "lcd.h"					  /* for Driver */
+
+// initialise this particular driver
+int hd_init_lcdserializer (Driver *drvthis);
+
+#endif