diff --git a/serial/essai.sh b/serial/essai.sh
new file mode 100755
index 0000000..3056834
--- /dev/null
+++ b/serial/essai.sh
@@ -0,0 +1,10 @@
+#!/bin/bash
+
+DEVICE="/dev/ttyACM0"
+
+for p in {0..15}
+do
+	echo pass $p
+	./t ${DEVICE} | tee -a foo.dat
+	sleep 8
+done
diff --git a/serial/funcs.c b/serial/funcs.c
index 9dfe358..99c6ae1 100644
--- a/serial/funcs.c
+++ b/serial/funcs.c
@@ -34,3 +34,10 @@ for (foo=0; foo<4; foo++) {
 return value;
 }
 /* ---------------------------------------------------------------- */
+int parse4values(char *line, char cflag, float array[4])
+{
+
+
+return -777;
+}
+/* ---------------------------------------------------------------- */
diff --git a/serial/serial.h b/serial/serial.h
index 294d3c4..6b28d65 100644
--- a/serial/serial.h
+++ b/serial/serial.h
@@ -17,5 +17,6 @@ int getline_to(int fd, char *where, int szm, int to_ms);
 /* auxiliary and test functions */
 
 int parseXvalue(char *asciidatas, char id);
+int parse4values(char *line, char cflag, float array[4]);
 
 
diff --git a/serial/t.c b/serial/t.c
index 03f67bb..27cb32f 100644
--- a/serial/t.c
+++ b/serial/t.c
@@ -12,38 +12,76 @@
 #include  <fcntl.h>			//Used for UART
 #include  <errno.h>
 #include  <termios.h>			//Used for UART
+#include  <getopt.h>
 
 #include  "serial.h"
 
 int	verbosity;
 
 /* ---------------------------------------------------------------- */
+int loop(int sfd, int iters)
+{
+int		count, foo;
+long		temps;
+char		ligne[200];
+
+for (count=0; count<iters; count++) {
+	foo = getline_to(sfd, ligne, 100, 0);
+	//
+	if (verbosity) {
+		fprintf(stderr, "getline #%d -> %d\n", count, foo);
+		fprintf(stderr, "%s\n", ligne);
+		}
+	foo = parseXvalue(ligne, 'X');
+	// 
+	if (foo >= 0) {
+		temps = time(NULL);
+		printf("%ld %d\n", temps, foo);
+		fflush(stdout);
+		}
+	else	{
+		fprintf(stderr, "%s: parse -> %d\n", __func__, foo);
+		}
+	}
+return 0;
+}
 /* ---------------------------------------------------------------- */
 int main (int argc, char *argv[])
 {
-int		serial_in, foo, count;
-char		ligne[200];
+int		serial_in;
+char		*device;
+int		nbre, speed, opt;
+
+/* set some default values */
+verbosity	= 0;
+nbre		= 25;
+speed		= 9600;
+device		= "/dev/ttyACM0";
+
+while ((opt = getopt(argc, argv, "d:n:v")) != -1) {
+	switch (opt) {
+		case 'v':	verbosity++;		break;
+		case 'n':	nbre = atoi(optarg);	break;
+		case 'd':	device = optarg;	break;
+
+		default:
+			fprintf(stderr, "%s : uh ?", argv[0]);
+			exit(1);
+			break;
+		}
 
-if (2 != argc) {
-	fprintf(stderr, "give me a device name, please.\n");
-	return 2;
 	}
 
-serial_in = prepare_UART(argv[1], 9600);
+serial_in = prepare_UART(device, speed);
+if (serial_in < 0) {
+	fprintf(stderr, "%s : open device : error %d on %s\n",
+				argv[0], serial_in, device);
+	exit(1);
+	}
 
 fprintf(stderr, "going to listen on %d\n", serial_in);
 
-for (count=0; count<100000; count++) {
-	foo = getline_to(serial_in, ligne, 100, 0);
-	fprintf(stderr, "getline #%d -> %d\n", count, foo);
-	fprintf(stderr, "%s\n", ligne);
-	foo = parseXvalue(ligne, 'X');
-	// fprintf(stderr, "parse -> %d\n", foo);
-	if (foo>= 0) {
-		printf("%d %d\n", count, foo);
-		fflush(stdout);
-		}
-	}
+(void)loop(serial_in, nbre);
 
 return 0;
 }