diff -r 8a7f8272516c -r 644a6106d712 brewpanel/sockio.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/brewpanel/sockio.c	Sat Nov 14 16:52:33 2015 +0100
@@ -0,0 +1,121 @@
+/*****************************************************************************
+ * Copyright (C) 2015
+ *   
+ * Michiel Broek <mbroek at mbse dot eu>
+ *
+ * This file is part of the mbsePi-apps
+ *
+ * mbsePi-apps is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2, or (at your option) any
+ * later version.
+ *
+ * mbsePi-apps 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
+ * General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with mbsePi-apps; see the file COPYING.  If not, write to the Free
+ * Software Foundation, 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ *****************************************************************************/
+
+#include "brewpanel.h"
+#include "slcd.h"
+#include "futil.h"
+#include "sockio.h"
+
+#ifdef HAVE_SDL_SDL_H
+
+#define SLCD_NULL       0x0000
+#define SLCD_CLEAR      0x0001
+#define SLCD_MCLEAR     0x1fff
+#define SLCD_HOME       0x0002
+#define SLCD_MHOME      0x1ffe
+#define SLCD_DGRAM      0x0080
+#define SLCD_MDGRAM     0x1f80
+#define SLCD_DATA       0x0200
+#define SLCD_MDATA      0x1e00
+#define SLCD_LEDS       0x0400
+#define SLCD_MLEDS      0x1c00
+#define SLCD_KEYS       0x0800
+#define SLCD_MKEYS      0x1800
+#define SLCD_MDEV       0xe000
+
+
+int			sock = -1;	/* Unix datagram socket		*/
+struct sockaddr_in	servaddr;	/* Server socket address	*/
+
+
+
+void socket_recv(void)
+{
+    uint16_t		data;
+    struct sockaddr_in	clntaddr;
+    socklen_t		clntlen = sizeof(clntaddr);
+    ssize_t		recv_len;
+    int			fd, my_error;
+
+    recv_len = recvfrom(sock, &data, sizeof(uint16_t), MSG_DONTWAIT, (struct sockaddr *)&clntaddr, &clntlen);
+    if (recv_len == sizeof(uint16_t)) {
+	/*
+	 * Get device from data
+	 */
+	fd = data & SLCD_MDEV >> 13;
+	if (fd)
+	    fprintf(stdout, "Device %d ", fd);
+	if ((data & SLCD_MCLEAR) == SLCD_CLEAR) {
+	    slcdClear(fd);
+	} else if ((data & SLCD_MHOME) == SLCD_HOME) {
+	    slcdHome(fd);
+	} else if ((data & SLCD_MDGRAM) == SLCD_DGRAM) {
+	    fprintf(stdout, "slcdPosition(%d, %d, %d)\n", fd, data & 0x001f, (data & 0x0060) >> 5);
+	    slcdPosition(fd, data & 0x001f, (data & 0x0060) >> 5);
+	} else if ((data & 0xfe00) == SLCD_DATA) {
+	    slcdPutchar(fd, data & 0x00ff);
+	} else {
+	    fprintf(stdout, "socket_recv got %04x\n", data);
+	}
+    } else if (recv_len < 0) {
+	my_error = errno;
+	if (my_error != EAGAIN) {
+	    fprintf(stdout, "socket_recv error: %s", strerror(my_error));
+	}
+    } else {
+	fprintf(stdout, "socket_recv unknown len=%d\n", (int)recv_len);
+    }
+}
+
+
+
+int socket_connect(void)
+{
+    int		s;
+
+    s = socket(AF_INET, SOCK_DGRAM, 0);
+    if (s == -1) {
+	syslog(LOG_NOTICE, "socket_connect() can't create: %s", strerror(errno));
+	return -1;
+    }
+
+    /*
+     * Setup address structure for the server socket.
+     */
+    memset(&servaddr, 0, sizeof(servaddr));
+    servaddr.sin_family = AF_INET;
+    servaddr.sin_port = htons(6554);
+    servaddr.sin_addr.s_addr = inet_addr("127.0.0.1");
+
+    if (bind(s, (struct sockaddr *)&servaddr, sizeof(servaddr)) < 0) {
+	close(s);
+	syslog(LOG_NOTICE, "socket_connect() can't bind socket: %s", strerror(errno));
+	return -1;
+    }
+
+    syslog(LOG_NOTICE, "socket_connect() using socket %d", s);
+    sock = s;
+    return sock;
+}
+
+
+#endif