Hello everybody !
I'm french, so I'll **TRY** to speak english correctly...
I'm new in C programming (in programming, in fact...) and I work on a
soft for speaking with an effect rack (alesis microverb IV) with sysex
trough rawmidi for saving my patches, remote control this unit, etc...
So, this is my problem : I don't know how to send sysex through
rawmidi !! I'm using the snd_rawmidi_open and snd_rawmidi_write, but I
can't send anything !! Even the rawmidi.c test program from alsa-utils
don't work...
My soundcard is an Sound Blaster Live ! 1024 Player...
This is a piece of my source code :
/* START OF SOURCE */
#include <sys/asoundlib.h>
#include <stdio.h>
#include <stdlib.h>
typedef struct {
int prog; //num of program
int a; //A parameter
int b; //B parameter
int bank; //bank number (0 = preset, 1 = user)
} pdb;
void affiche(unsigned char a[]) {
int i=-1;
printf("The next SySex have been sent trough RawMidi\n");
while (a[i++] != 0xF7) {
printf("%x",a[i]);
printf(" ");
}
printf("\n");
printf("\n");
return;
}
void entete(unsigned char mess[]) {
/* start of SySex */
mess[0]=0xf0;
/* identification Alesis */
mess[1]=0x00;
mess[2]=0x00;
mess[3]=0x0e;
/*identification microverb IV*/
mess[4]=0x12;
/* MIDI channel (0x00 = omni) */
mess[5]=0x00;
}
void sysex_store(unsigned char a[]) {
// head of SySex
entete(a);
//SySex definition STORE
a[6]=0x03;
// EOX
a[7]=0xF7;
}
void dump_store(snd_rawmidi_t *handle) {
unsigned char sysex[8];
ssize_t taille; //### VARIABLE A DECOMMENTER QUAND ON REACTIVE
L'ENVOIE DU SYSEX ###
//creation du unsigned char
sysex_store(sysex);
//envoie du unsigned char
snd_rawmidi_write(handle,sysex,taille);
affiche(sysex);
}
int main (void) {
snd_rawmidi_t *handle;
snd_rawmidi_open(&handle, 0, 0, SND_RAWMIDI_OPEN_DUPLEX);
dump_store(handle);
snd_rawmidi_close(handle);
return 0;
}
/* END OF SOURCE */
Normally, this code create a "store the current program" message and
send it trough rawmidi... But it don't...
So, where is my error ?
Another small question : how can I force a pause in a program ? Is
there a function like [delay(10);] who make a pause of 10 miliseconds
in a execution ? I'll need to make a pause between to sysex later in
program...
Thanx for help a newbie !!
Charles Flèche
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