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#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/time.h>
#include <linux/soundcard.h>
#define DEVICE "/dev/sequencer"
int main(void)
{
int fd;
ssize_t res;
unsigned char ev[4];
fd = open(DEVICE, O_RDWR);
if (fd < 0) { perror( "open (" DEVICE ")" ); return EXIT_FAILURE; }
while ((res = read(fd, &ev, sizeof(ev))) == sizeof(ev)) {
printf("read event: bytes = 0x%x,0x%x,0x%x,0x%x\n", ev[0], ev[1], ev[2], ev[3]);
}
printf("end res = %li\n", (long)res);
close(fd);
return EXIT_SUCCESS;
}
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