I am using this tutorial to learn how to use bluetooth in c on my raspberry pi: https://people.csail.mit.edu/albert/bluez-intro/c404.html
I am currently trying to get running simplescan.c:
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/socket.h>
#include <bluetooth/bluetooth.h>
#include <bluetooth/hci.h>
#include <bluetooth/hci_lib.h>
int main(int argc, char **argv)
{
inquiry_info *ii = NULL;
int max_rsp, num_rsp;
int dev_id, sock, len, flags;
int i;
char addr[19] = { 0 };
char name[248] = { 0 };
dev_id = hci_get_route(NULL);
sock = hci_open_dev( dev_id );
if (dev_id < 0 || sock < 0) {
perror("opening socket");
exit(1);
}
len = 8;
max_rsp = 255;
flags = IREQ_CACHE_FLUSH;
ii = (inquiry_info*)malloc(max_rsp * sizeof(inquiry_info));
num_rsp = hci_inquiry(dev_id, len, max_rsp, NULL, &ii, flags);
if( num_rsp < 0 ) perror("hci_inquiry");
for (i = 0; i < num_rsp; i++) {
ba2str(&(ii+i)->bdaddr, addr);
memset(name, 0, sizeof(name));
if (hci_read_remote_name(sock, &(ii+i)->bdaddr, sizeof(name),
name, 0) < 0)
strcpy(name, "[unknown]");
printf("%s %s\n", addr, name);
}
free( ii );
close( sock );
return 0;
}
When I compile using this command:
gcc -o simplescan simplescan.c -lbluetooth
I get this error:
/usr/bin/ld: cannot find -lbluetooth
collect2: error: ld returned 1 exit status
EDIT: For some reason now when I try to compile the error has changed to this:
simplescan.c:5:10: fatal error: bluetooth/bluetooth.h: No such file or directory
#include <bluetooth/bluetooth.h>
I have read that BlueZ comes pre-installed on Raspbian, and I have the newest version, but I can't seem to find the bluetooth library folder or any of the .h files in it.
This tutorial might be old so things might have moved around. Does the bluetooth library come preinstalled along with bluez? If so, where should I look to confirm?
If this library is not on my RPI where should I get it from?
