Logiciels divers autour du protocole « Open Sound Control » aka OSC
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/*
* LE LASER DE GABY
*
* +---------------------------------------------+
* | transmission des commandes vers l'arduino |
* +---------------------------------------------+
$ oscsend localhost 9001 /joystick/xy ii 32000 -2210
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <termios.h>
#include "../functions/serial.h"
#include "transmit.h"
/* ---------------------------------------------------------------- */
static int fdtx = -1;
/* ---------------------------------------------------------------- */
/*
* parametres :
* fname: a file for dumping data or a serial device
* bauds: speed of serial port, 0 for a file dump
*
*/
int init_transmit(char *fname, int bauds)
{
int fd;
int baudsymb;
fprintf(stderr, ">>> %s ( '%s' %d )\n", __func__, fname, bauds);
if (0 == bauds) {
/* open as a dump file */
fd = open(fname, O_CREAT|O_WRONLY|O_TRUNC, S_IRWXU);
if (fd < 0) {
perror(fname);
exit(1);
}
}
else {
/* open as as a serial out to Arduino */
fprintf(stderr, "bauds are %d, exiting\n", bauds);
exit(1);
/* XXX */
}
fdtx = fd;
fprintf(stderr, "%s: fd is %d\n", __func__, fdtx);
return fd;
}
/* ---------------------------------------------------------------- */
/*
* ici on présupoose que la valeur est un "short int"
* donc 2^16 valeurs -32768 32767
*/
int send_position(char xy, int value)
{
char message[100];
char val8;
int foo;
if (fdtx < 0) {
fprintf(stderr, "%s: fdtx not initialized !\n", __func__);
exit(1);
}
if (xy != 'X' && xy != 'Y') {
fprintf(stderr, "%s: invalid xy tag '%c'\n", __func__, xy);
return -1;
}
val8 = (char)(value / 256); /* -> signed byte */
sprintf(message, "%c%02x", xy, (unsigned char)val8);
fprintf(stderr, " %c %8d %8d %s\n", xy, value, val8, message);
foo = write(fdtx, message, 3);
if (3 != foo) {
perror("write ?");
return -1;
}
return 0;
}
/* ---------------------------------------------------------------- */