From ddfadc840cb02530e07ca33b83138ae1a5034227 Mon Sep 17 00:00:00 2001
From: Mitja Felicijan <mitja.felicijan@gmail.com>
Date: Thu, 9 Jan 2025 09:36:24 +0100
Subject: Added C Bluetooth scan example

---
 c-bluetooth/Makefile  |  6 ++++++
 c-bluetooth/connect.c | 47 +++++++++++++++++++++++++++++++++++++++++++++++
 c-bluetooth/scan.c    | 47 +++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 100 insertions(+)
 create mode 100644 c-bluetooth/Makefile
 create mode 100644 c-bluetooth/connect.c
 create mode 100644 c-bluetooth/scan.c

(limited to 'c-bluetooth')

diff --git a/c-bluetooth/Makefile b/c-bluetooth/Makefile
new file mode 100644
index 0000000..c11dbcf
--- /dev/null
+++ b/c-bluetooth/Makefile
@@ -0,0 +1,6 @@
+scan: scan.c
+	cc -o scan scan.c -lbluetooth
+
+provision:
+	sudo apt-get install libbluetooth-dev
+
diff --git a/c-bluetooth/connect.c b/c-bluetooth/connect.c
new file mode 100644
index 0000000..17fe433
--- /dev/null
+++ b/c-bluetooth/connect.c
@@ -0,0 +1,47 @@
+#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;
+}
+
diff --git a/c-bluetooth/scan.c b/c-bluetooth/scan.c
new file mode 100644
index 0000000..30cfe36
--- /dev/null
+++ b/c-bluetooth/scan.c
@@ -0,0 +1,47 @@
+#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;
+}
+
-- 
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