commandline options

.gitignore

@@ -1 +1,3 @@
 .DS_Store
+irmc
+*.o

AUTHORS

@@ -0,0 +1,8 @@
+Fernan Bolando (VE4FEB)
+Gerolf Ziegenhain (DG6FL)
+
+MorseKOB:
+Lex Kerr
+
+CWCom Protocol:
+John Samien (VK1EME)

README.md

@@ -1,41 +1,82 @@
-=== WIP - Snipplets ===
+irmc - Internet Relay Morse Code
-How to use:
+================================
 
- 1 usage: irmc [hostname] [port] [channel] [id] [serialport]
+IRMC stands for Internet Relay Morse Code and is an implementation of [MOIP](https://github.com/8cH9azbsFifZ/moip).
-./irmc mtc-kob.dyndns.org 7890 103 123 /dev/tty.usbserial 
+It implements the [CWCom protocol](http://kob.sdf.org/morsekob/docs/cwcom.pdf) 
-faeroes.sdf.org.7890
+as adopted by [MorseKOB](http://kob.sdf.org/morsekob/docs/history.pdf). 
+You can try out the software in a [browser](http://kob.sdf.org/morsekob/morsekob30/index.htm) using Java.
+
+![Screenshot on OSX](/doc/screenshot.png?raw=true "Screenshot")
 
 
-TBD: Driver: 
+# How to build?
-serial - 2usb!
+## Install dependency: morse keyer library
+```
+wget https://github.com/8cH9azbsFifZ/morse/archive/v0.1.tar.gz
+tar xzf v0.1.tar.gz
+cd morse-0.1
+libtoolize
+./autogen.sh
+./configure  --with-portaudio
+make
+sudo make install
+```
 
-TBD: OSX - howto install dependencies
+## Debian (Wheezy)
+Some dependencies have to be installed:
+```
+apt-get install -y alsa-oss oss-compat build-essential autoconf libao-dev libtool
+```
+Afterwards compilation with `make` should work. If something went wrong, you may have
+to adjust your `LD_LIBRARY_PATH`. Alternatively try:
+```
+LD_LIBRARY_PATH=/usr/local/lib ./irmc mtc-kob.dyndns.org 7890 33 123 
+```
 
-=== Original post ===
+## OSX (Yosemite)
-I have been using cwcom to practice sending morsecode, unfortunately my main computer at home is running openbsd and it has gotten harder to gain access to a reliable MS Windows machine. So I wrote my own client that works on openbsd. 
+Compilation with make :)
-This is written in C and although not tested it should compile under other OS. If any one wants to try it and send me feedback. you can download version 0.01 here http://fernan.bitbucket.org/irmc.tgz
-Les Kerr of https://home.comcast.net/~morsekob/ has been very patient in answering my questions regarding the cwcom protocol and setting up a test server during debugging.
 
-There are few difference between this and the official cwcom client
+For the USB serial devices you need a PL2303 driver 
-1. It is a command line tool 
+(i.e. [PL2303_Serial-USB_on_OSX_Lion.pkg](http://changux.co/osx-installer-to-pl2303-serial-usb-on-osx-lio/)).
-2. It does not send the characters of the message to the receivers screen.
-3. It does not translate CW for you. You can try fldigi if you just want see the transmission.
-4. Tone pitch is currently hard coded to 650Hz
-5. It does not have a way to show you who is listening.  
 
-Bugs
+## Testing
-There are a few that I am working on right now, but feel free to send me feedback if you get a chance to try it out.
+./irmc morsecode.dyndns.org 7890 2348 test
 
-File(s)
+Or you may want to use tcpdump, i.e.:
-http://fernan.bitbucket.org/irmc.tgz
+```
+sudo tcpdump -i all -vvvv "host faeroes.sdf.org"
+```
 
 
-Resources
+# How to use:
-The following people have helped me a lot to learn the protocols and setting up test servers.
+`./irmc -h`
-Les Kerr -  https://home.comcast.net/~morsekob/
-Bob Denny - http://morse-rss-news.sourceforge.net/
-John Samin - http://www.mrx.com.au/
 
-=== Source: http://fernski.blogspot.de/2013/03/internet-relay-morsecode.html ===
-=== End Original Post ===
                                                       
+## Hardware interface options
+A good description on how to build different interfaces (telegraph key, sounder or both) 
+is given on the [MorseKOB Website](http://kob.sdf.org/morsekob/interface.htm). 
+Landline telegraphs use "closed circuits" for communications; if you have built one at home, 
+you may also use the [loop interface](http://kob.sdf.org/morsekob/docs/loopinterface.pdf).
+
+Connection of a morse key:
+Serial PIN: 4 & 6
+[layout of pins](http://techpubs.sgi.com/library/dynaweb_docs/0650/SGI_Admin/books/MUX_IG/sgi_html/figures/4-2.serial.port.con.gif)
+Connecting the palm radio: keep an eye on the grounding :)
+
+
+  http://kob.sdf.org/morsekob/interface.htm#portpins
+  RS232     DB9     Function    
+  DTR       4       Manual Key / paddle common
+  DSR       6       Manual key / dot paddle
+  CTS       8       Dash paddle
+  RTS       7       Sounder output
+  SG        5       Sounder ground
+
+
+# Changelog
+* v0.2 [zip](https://github.com/8cH9azbsFifZ/irmc/archive/v0.2.zip) - ported to debian wheezy and osx yosemite, DG6FL
+* v0.1 [zip](https://github.com/8cH9azbsFifZ/irmc/archive/v0.1.zip) - original version, VE7FEB
+
+Code Quality
+============
+This is experimental code.

sound.c

@@ -1,94 +0,0 @@
-/* irmc - internet relay morsecode client */
-
-#include <stdio.h>
-#include <unistd.h>
-#include <stdlib.h>
-#include <fcntl.h>
-#include <soundcard.h>
-#include <math.h>
-
-#define SAMPLE_RATE 48000
-
-int sample_rate = SAMPLE_RATE;
-int fd_speaker;
-int zinebuf[SAMPLE_RATE * 2]; 
-int pitch = 650;
-
-void
-init_sound()
-{
-	int i, pr;
-
-	pr = sample_rate / pitch;
-
-	for(i = 0; i < SAMPLE_RATE * 2; i++)
-		zinebuf[i] = 32767 * sin(2 * 3.1415 / pr * (double)i );
-}
-
-void
-play_code_element (int length)
-{
-  	int i;
-  	short buf[SAMPLE_RATE * 4];		
-
-  	int outsz;
-	
-	outsz = abs(length) * SAMPLE_RATE / 1000;
-	
-	if(length == 0 || abs(length) > 2000) return;
-	if(length < 0) {   /* Space */
-		for (i = 0; i < outsz; i++) buf[i] = 0;
-	} else { /* Mark */
-		for (i = 0; i < outsz; i++) buf[i] = zinebuf[i];
-	}
-
-	if (write (fd_speaker, buf, outsz * 2) != (outsz * 2)){
-      		perror ("Audio write");
-      		exit (-1);
-    	}
-}
-
-
-int
-open_audio_device (char *name, int mode)
-{
-  	int tmp, fd;
-
-  	if ((fd = open (name, mode, 0)) == -1){
-      		perror (name);
-      		//exit (-1);
-    	}
-
-  	tmp = AFMT_S16_NE;		/* Native 16 bits */
-  	if (ioctl (fd, SNDCTL_DSP_SETFMT, &tmp) == -1){
-      		perror ("SNDCTL_DSP_SETFMT");
-      		exit (-1);
-    	}
-
-  	if (tmp != AFMT_S16_NE){
-      		fprintf (stderr,
-	       		"The device doesn't support the 16 bit sample format.\n");
-      		exit (-1);
-    	}
-
-  	tmp = 1;
-  	if (ioctl (fd, SNDCTL_DSP_CHANNELS, &tmp) == -1){
-      		perror ("SNDCTL_DSP_CHANNELS");
-      		exit (-1);
-    	}
-
-  	if (tmp != 1){
-      		fprintf (stderr, "The device doesn't support mono mode.\n");
-      		exit (-1);
-    	}
-
-  	//sample_rate = 48000;
-  	if (ioctl (fd, SNDCTL_DSP_SPEED, &sample_rate) == -1){
-      		perror ("SNDCTL_DSP_SPEED");
-      		exit (-1);
-    	}
-
-  	return fd;
-}
-
-

sound.h

@@ -1,3 +0,0 @@
-void init_sound (void);
-void play_code_element (int);
-int open_audio_device (char *, int);

src/Makefile

@@ -1,7 +1,7 @@
-SRC = irmc.c sound.c
+SRC = irmc.c cwprotocol.c
 OBJ = ${SRC:.c=.o}
-LDFLAGS = -lm -lossaudio
+LDFLAGS = -L/usr/local/lib -L/opt/local/lib  -lm -lmorse
-CFLAGS = -Wall  
+CFLAGS = -I/usr/local/include -I/opt/local/include -Wall 
 INSTALLDIR = ${HOME}/bin
 
 all: options irmc 
@@ -21,9 +21,8 @@ irmc:   ${OBJ}
 	@echo CC -o $@
 	@${CC} -o $@ ${OBJ} ${LDFLAGS}
 
-hex: 	${OBJ}
+java:
-	@echo avr-gcc -o $@
+	java -jar test/MorseKOB.jar 
-	avr-gcc -o $@ ${OBJ} ${LDFLAGS}
 
 clean:
 	@echo cleaning

src/cwprotocol.c

@@ -0,0 +1,36 @@
+#include <stdio.h>
+#include "cwprotocol.h"
+
+int prepare_id (struct data_packet_format *id_packet, char *id)
+{
+	id_packet->command = DAT;
+	id_packet->length = SIZE_DATA_PACKET_PAYLOAD;
+	snprintf(id_packet->id, SIZE_ID, id, "%s");
+	id_packet->sequence = 0;
+	id_packet->n = 0;
+	snprintf(id_packet->status, SIZE_ID, INTERFACE_VERSION);
+	id_packet->a21 = 1;     /* These magic numbers was provided by Les Kerr */
+	id_packet->a22 = 755;
+	id_packet->a23 = 65535;
+
+	return 0;
+}
+
+
+int prepare_tx (struct data_packet_format *tx_packet, char *id)
+{
+	int i;
+
+	tx_packet->command = DAT;
+	tx_packet->length = SIZE_DATA_PACKET_PAYLOAD;
+	snprintf(tx_packet->id, SIZE_ID,  id, "%s");
+	tx_packet->sequence = 0;
+	tx_packet->n = 0;
+	for(i = 1; i < 51; i++)tx_packet->code[i] = 0;
+	tx_packet->a21 = 0; /* These magic numbers was provided by Les Kerr */
+	tx_packet->a22 = 755;
+	tx_packet->a23 = 16777215;
+	snprintf(tx_packet->status, SIZE_STATUS, "?");
+	
+	return 0;
+}

src/cwprotocol.h

@@ -0,0 +1,45 @@
+#define INTERFACE_VERSION "irmc v0.02"
+
+// Structures for the packets: unsigned short command
+#define DIS 0x0002 // disconnect
+#define DAT 0x0003 
+#define CON 0x0004 // connect
+#define ACK 0x0005
+
+#define SIZE_COMMAND_PACKET 4
+#define SIZE_DATA_PACKET 496
+#define SIZE_DATA_PACKET_PAYLOAD 492 // = SIZE_DATA_PACKET - SIZE_COMMAND_PACKET
+
+#define SIZE_ID 128
+#define SIZE_STATUS 128
+#define SIZE_CODE 51
+
+// This structure will be used to (dis-)connect to KOB servers
+struct command_packet_format{
+    	unsigned short command; // CON / DIS
+    	unsigned short channel; // Channel number
+};
+
+// This structure will be used for id, rx and tx packets
+struct data_packet_format{
+    	unsigned short command;
+    	unsigned short length;
+    	char id[SIZE_ID];
+    	char a1[4];
+    	unsigned int sequence;
+	unsigned int a21;  
+	unsigned int a22;
+	unsigned int a23;
+    	signed int code[SIZE_CODE];
+    	unsigned int n;
+    	char status[SIZE_STATUS];  /* This is called version in MorseKob */
+    	char a4[8];
+    
+};
+
+// Define the packets used
+#define DEFAULT_CHANNEL 103
+
+
+int prepare_id (struct data_packet_format *id_packet, char *id);
+int prepare_tx (struct data_packet_format *tx_packet, char *id);

src/irmc.c

@@ -11,60 +11,38 @@
 #include <sys/socket.h>
 #include <math.h>
 #include <fcntl.h>
-#include <soundcard.h>
+#include <morse/beep.h>
+#ifdef __MACH__
+#define LIBOSS_INTERNAL
+#include <liboss/soundcard.h> //will not be used for audio any more
+#else
+#include <linux/ioctl.h>
+#include <asm-generic/ioctl.h>
+#include <asm-generic/termios.h>
+#endif 
 #include <signal.h>
 #include <arpa/inet.h>
-#include "sound.h"
+#include <time.h>
+#include <sys/time.h>
+#include <stdio.h>
  
-#define MAXDATASIZE 1024 // max number of bytes we can get at once 
+#ifdef __MACH__
-
+#include <mach/clock.h>
-#define DIS 0x0002
+#include <mach/mach.h>
-#define DAT 0x0003
+#endif
-#define CON 0x0004
-#define ACK 0x0005
  
 #define DEBUG 0
 
-struct command_packet_format{
+#define MAXDATASIZE 1024 // max number of bytes we can get at once 
-    	unsigned short command;
-    	unsigned short channel;
-};
-struct data_packet_format{
-    	unsigned short command;
-    	unsigned short length;
-    	char id[128];
-    	char a1[4];
-    	unsigned int sequence;
-	unsigned int a21;  
-	unsigned int a22;
-	unsigned int a23;
-    	signed int code[51];
-    	unsigned int n;
-    	char status[128];  /* This is called version in MorseKob */
-    	char a4[8];
 
-};
+#include "cwprotocol.h"
-struct code_packet_format{
+struct command_packet_format connect_packet = {CON, DEFAULT_CHANNEL}; 
-    	unsigned short command;
-    	unsigned short length;
-    	char id[128];
-    	char a1[4];
-    	unsigned int sequence;
-	unsigned int a21;
-	unsigned int a22;
-	unsigned int a23;
-    	signed int code[51];
-    	unsigned int n;
-    	char a3[128];
-    	char a4[8];
-};
-
-struct command_packet_format connect_packet;
 struct command_packet_format disconnect_packet = {DIS, 0};
 struct data_packet_format id_packet;
 struct data_packet_format rx_data_packet;
 struct data_packet_format tx_data_packet;
-int serial_status = 0, fd_speaker, fd_serial, fd_socket, numbytes;
+
+int serial_status = 0, fd_serial, fd_socket, numbytes;
 int tx_sequence = 0, rx_sequence;
 
 double tx_timeout = 0;
@@ -73,7 +51,6 @@ long tx_timer = 0;
 #define TX_TIMEOUT 240.0 
 #define KEEPALIVE_CYCLE 100
 
-char soundcard[] = "/dev/audio";
 long key_press_t1;
 long key_release_t1;
 int last_message = 0;
@@ -83,6 +60,22 @@ char last_sender[16];
 int translate = 0;
 int audio_status = 1;
 
+/* portable time, as listed in https://gist.github.com/jbenet/1087739  */
+void current_utc_time(struct timespec *ts) {
+#ifdef __MACH__ // OS X does not have clock_gettime, use clock_get_time
+  clock_serv_t cclock;
+  mach_timespec_t mts;
+  host_get_clock_service(mach_host_self(), CALENDAR_CLOCK, &cclock);
+  clock_get_time(cclock, &mts);
+  mach_port_deallocate(mach_task_self(), cclock);
+  ts->tv_sec = mts.tv_sec;
+  ts->tv_nsec = mts.tv_nsec;
+#else
+  clock_gettime(CLOCK_REALTIME, ts);
+#endif
+ 
+}
+
 /* a better clock() in milliseconds */
 long 
 fastclock(void)
@@ -90,7 +83,7 @@ fastclock(void)
 	struct timespec t;
 	long r;
 
-	clock_gettime(CLOCK_REALTIME, &t);
+	current_utc_time (&t);
 	r = t.tv_sec * 1000;
 	r = r + t.tv_nsec / 1000000;
 	return r;
@@ -123,22 +116,23 @@ void *get_in_addr(struct sockaddr *sa)
 	return &(((struct sockaddr_in6*)sa)->sin6_addr);
 }
 
+// connect to server and send my id.
 void
 identifyclient(void)
 {
 	tx_sequence++;
 	id_packet.sequence = tx_sequence;
-	send(fd_socket, &connect_packet, sizeof(connect_packet), 0);
+	send(fd_socket, &connect_packet, SIZE_COMMAND_PACKET, 0);
-	send(fd_socket, &id_packet, 496, 0);
+	send(fd_socket, &id_packet, SIZE_DATA_PACKET, 0);
 }
 
+// disconnect from the server
 void
 inthandler(int sig)
 {
 	signal(sig, SIG_IGN);
-	send(fd_socket, &disconnect_packet, sizeof(disconnect_packet), 0);	
+	send(fd_socket, &disconnect_packet, SIZE_COMMAND_PACKET, 0);	
 	close(fd_socket);
-	close(fd_speaker);
 	close(fd_serial);
 	exit(1);
 }
@@ -169,7 +163,7 @@ txloop (void)
 			if(tx_timeout > TX_TIMEOUT) return;
 		}
 		key_press_t1 = fastclock();	
-		if(tx_data_packet.n == 50) {
+		if(tx_data_packet.n == SIZE_CODE) {
 			printf("irmc: warning packet is full.\n");
 			return;
 		}
@@ -195,7 +189,7 @@ commandmode(void)
 		tx_data_packet.code[0] = -1;
 		tx_data_packet.code[1] = 1;
 		tx_data_packet.n = 2;
-		for(i = 0; i < 5; i++) send(fd_socket, &tx_data_packet, 496, 0);
+		for(i = 0; i < 5; i++) send(fd_socket, &tx_data_packet, SIZE_DATA_PACKET, 0);
 		tx_data_packet.n = 0;
 		return 0;
 	}
@@ -206,7 +200,7 @@ commandmode(void)
 		tx_data_packet.code[0] = -1;
 		tx_data_packet.code[1] = 2;
 		tx_data_packet.n = 2;
-		for(i = 0; i < 5; i++) send(fd_socket, &tx_data_packet, 496, 0);
+		for(i = 0; i < 5; i++) send(fd_socket, &tx_data_packet, SIZE_DATA_PACKET, 0);
 		tx_data_packet.n = 0;
 		return 0;
 	}
@@ -221,12 +215,10 @@ commandmode(void)
 	
 	if((strncmp(cmd, "aon", 3)) == 0){
 		audio_status = 1;
-		fd_speaker = open_audio_device(soundcard, O_WRONLY);
 		return 0;
 	}
 	if((strncmp(cmd, "aoff", 3)) == 0){
 		audio_status = 0;
-		close(fd_speaker);
 		return 0;
 	}
 	printf("?\n");
@@ -275,47 +267,61 @@ int main(int argc, char *argv[])
 	char hostname[64];
 	char port[16];
 	int channel;
-	char id[128];
+	char id[SIZE_ID];
 	char serialport[64];
 
+	// Set default values
+	snprintf(hostname, 64, "mtc-kob.dyndns.org");
+	snprintf(port, 16, "7890");
+	channel = 103;
+	snprintf(id, SIZE_ID, "irmc-default");
+	snprintf(serialport, 64, "/dev/tty.usbserial");
 
-	if (argc < 4) {
+	// Read commandline
-	    fprintf(stderr," %i usage: irmc [hostname] [port] [channel] [id] [serialport]\n", argc);
+	opterr = 0; 
-	    exit(1);
+	int c;
+	while ((c = getopt (argc, argv, "h:p:c:i:s:")) != -1)
+	{
+		switch (c) 
+		{
+			case 'h':
+				snprintf(hostname, 64, "%s", optarg);
+				break;
+			case 'p':
+				snprintf(port, 16, "%s", optarg);
+				break;
+			case 'c':
+				channel = atoi (optarg);
+				break;
+			case 'i':
+				snprintf(id, SIZE_ID, "%s", optarg);
+				break;
+			case 's':
+				snprintf(serialport, 64, "%s", optarg);
+				break;
+			case '?':
+	    			fprintf(stderr, "irmc - Internet Relay Morse Code\n\n");
+				fprintf(stderr, "usage: irmc [arguments]\n\n");
+				fprintf(stderr, "Arguments:\n\n");
+				fprintf(stderr, "   -h [hostname]     Hostname of morsekob server. Default: %s\n", hostname);
+				fprintf(stderr, "   -p [port]         Port of morsekob server. Default: %s\n", port);
+				fprintf(stderr, "   -c [channel]      Channel. Default: %d\n", channel);
+				fprintf(stderr, "   -i [id]           My ID. Default: %s\n", id);
+				fprintf(stderr, "   -s [serialport]   Serial port device name. Default: %s\n", serialport);
+				return 1;
+			default: 
+				abort ();
+		}
 	}
 
-	snprintf(hostname, 64, argv[1], "%s");
+	// Preparing connection
-	snprintf(port, 16, argv[2], "%s");
+	fprintf(stderr, "irmc - Internet Relay Morse Code\n\n");
-	channel = atoi(argv[3]);
+	fprintf(stderr, "Connecting to %s:%s on channel %d with ID %s.\n", hostname, port, channel, id); 
-	if(argc > 4) snprintf(id, 128, argv[4], "%s");
-	else snprintf(id, 128, "irmc"); 
-	if(argc > 5) snprintf(serialport, 64, argv[5], "%s");
 
-	id_packet.command = DAT;
+	prepare_id (&id_packet, id);
-	id_packet.length = 492;
+	prepare_tx (&tx_data_packet, id);
-	snprintf(id_packet.id, 128, id, "%s");
-	id_packet.sequence = 0;
-	id_packet.n = 0;
-	snprintf(id_packet.status, 128, "irmc v0.02");
-	id_packet.a21 = 1;     /* These magic numbers was provided by Les Kerr */
-	id_packet.a22 = 755;
-	id_packet.a23 = 65535;
-	
-	tx_data_packet.command = DAT;
-	tx_data_packet.length = 492;
-	snprintf(tx_data_packet.id, 128,  id, "%s");
-	tx_data_packet.sequence = 0;
-	tx_data_packet.n = 0;
-	for(i = 1; i < 51; i++)tx_data_packet.code[i] = 0;
-	tx_data_packet.a21 = 0; /* These magic numbers was provided by Les Kerr */
-	tx_data_packet.a22 = 755;
-	tx_data_packet.a23 = 16777215;
-	snprintf(tx_data_packet.status, 128, "?");
-	
-	connect_packet.command = CON;
 	connect_packet.channel = channel;
 	
-	
 	signal(SIGINT, inthandler);
 	
 	memset(&hints, 0, sizeof hints);
@@ -347,22 +353,21 @@ int main(int argc, char *argv[])
     
     	fcntl(fd_socket, F_SETFL, O_NONBLOCK);
 	if (p == NULL) {
-		fprintf(stderr, "irmc: failed to connect\n");
+		fprintf(stderr, "Failed to connect.\n");
 		return 2;
 	}
 
 	inet_ntop(p->ai_family, get_in_addr((struct sockaddr *)p->ai_addr),
 			s, sizeof s);
-	printf("irmc: connected to %s\n", s);
+	fprintf(stderr, "Connected to %s.\n", s);
-	fd_speaker = open_audio_device(soundcard, O_WRONLY);
+	beep_init();
 	fd_serial = open(serialport, O_RDWR | O_NOCTTY | O_NDELAY);
 	if(fd_serial == -1) {
-    		printf("irmc: unable to open serial port.\n");
+    		fprintf(stderr,"Unable to open serial port %s.\n", serialport);
     	}
 	freeaddrinfo(servinfo); /* all done with this structure */
 
 	key_release_t1 = fastclock();
-	init_sound();
 	identifyclient();
     
 	/* Main Loop */
@@ -370,8 +375,8 @@ int main(int argc, char *argv[])
   		if(tx_timer == 0) 
 			if((numbytes = recv(fd_socket, buf, MAXDATASIZE-1, 0)) == -1)
 				usleep(250);
-		if(numbytes == 496 && tx_timer == 0){
+		if(numbytes == SIZE_DATA_PACKET && tx_timer == 0){
-			memcpy(&rx_data_packet, buf, 496);
+			memcpy(&rx_data_packet, buf, SIZE_DATA_PACKET);
 		#if DEBUG  
 			printf("length: %i\n", rx_data_packet.length);
 			printf("id: %s\n", rx_data_packet.id);
@@ -379,7 +384,7 @@ int main(int argc, char *argv[])
 			printf("version: %s\n", rx_data_packet.status);
 			printf("n: %i\n", rx_data_packet.n);
 			printf("code:\n");
-			for(i = 0; i < 51; i++)printf("%i ", rx_data_packet.code[i]); printf("\n");
+			for(i = 0; i < SIZE_CODE; i++)printf("%i ", rx_data_packet.code[i]); printf("\n");
 		#endif
 			if(rx_data_packet.n > 0 && rx_sequence != rx_data_packet.sequence){
 				message(2);
@@ -398,7 +403,22 @@ int main(int argc, char *argv[])
 						break;
 					default:
 						if(audio_status == 1)
-							play_code_element (rx_data_packet.code[i]);
+						{ 
+
+							int length = rx_data_packet.code[i];
+							if(length == 0 || abs(length) > 2000) {
+							}
+							else
+							{
+								if(length < 0) {
+									beep(0.0, abs(length)/1000.);
+								}
+								else
+								{
+									beep(1000.0, length/1000.);
+								}
+							}
+						}
 						break;
 					}
 				}
@@ -409,7 +429,7 @@ int main(int argc, char *argv[])
 		if(tx_data_packet.n > 1 ){
 			tx_sequence++;
 			tx_data_packet.sequence = tx_sequence;
-			for(i = 0; i < 5; i++) send(fd_socket, &tx_data_packet, 496, 0);
+			for(i = 0; i < 5; i++) send(fd_socket, &tx_data_packet, SIZE_DATA_PACKET, 0);
 		#if DEBUG		
 			printf("irmc: sent data packet.\n");
 		#endif
@@ -440,9 +460,8 @@ int main(int argc, char *argv[])
 		}
 	} /* End of mainloop */
 
-	send(fd_socket, &disconnect_packet, sizeof(disconnect_packet), 0);	
+	send(fd_socket, &disconnect_packet, SIZE_COMMAND_PACKET, 0);	
 	close(fd_socket);
-	close(fd_speaker);
 	close(fd_serial);
 
 	exit(0);