linux Bluetooth programming in c

Question

I am trying to run a basic code of c in linux[ubuntu] to search bluetooth device, but i am facing some problem.

By using command sudo apt-get install bluez, to install required blueZ library it is saying that bluez is already newest version.

But error comes that not able to find bluetooth.h and other files in compiling C source code, with gcc -o simplescan simplescan.c -lbluetooth

Is there a complete library package, or do I have to download these header files?.

I am following this link

Answer 1

Maybe you didn't include the essential header.

here's an example of code to scan for bluetooth devices

#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;
}

to compile it on linux, just do

gcc -o simplescan simplescan.c -lbluetooth

EDIT:

Original code can be found in here