Added function to libusb interface that allows addressing of devices …

platform/libusb/hci_transport_h2_libusb.c

@@ -225,6 +225,7 @@ static int sco_out_addr;
 
 // device path
 static int usb_path_len;
+static uint8_t dev_addr;
 static uint8_t usb_path[USB_MAX_PATH_LEN];
 
 // transport interface state
@@ -245,11 +246,15 @@ void hci_transport_usb_set_path(int len, uint8_t * port_numbers){
     if (len > USB_MAX_PATH_LEN || !port_numbers){
         log_error("hci_transport_usb_set_path: len or port numbers invalid");
         return;
-    } 
+    }
     usb_path_len = len;
     memcpy(usb_path, port_numbers, len);
 }
 
+void hci_transport_usb_set_address(uint8_t _dev_addr){
+	dev_addr = _dev_addr;
+}
+
 //
 static void queue_transfer(struct libusb_transfer *transfer){
 
@@ -1019,6 +1024,37 @@ static int usb_open(void){
             printf("USB device with given path not found\n");
             return -1;
         }
+   } else if(dev_addr) {
+
+		for (int i=0;i<num_devices;i++)
+		{
+			if(libusb_get_device_address(devs[i]) == dev_addr)
+			{
+				printf("Found Specified USB device\n");
+				handle = try_open_device(devs[i]);
+
+				if (!handle) continue;
+
+				r = prepare_device(handle);
+				if (r < 0) {
+					handle = NULL;
+					continue;
+				}
+
+				dev = devs[i];
+				r = scan_for_bt_endpoints(dev);
+				if (r < 0) {
+					handle = NULL;
+					continue;
+				}
+
+				libusb_state = LIB_USB_INTERFACE_CLAIMED;
+				break;
+			}
+		}
+		if(!handle)
+			printf("Did not find Specified USB device\n");
+
     } else {
 
         int deviceIndex = -1;

src/hci_transport.h

@@ -172,6 +172,11 @@ const hci_transport_t * hci_transport_usb_instance(void);
  */
 void hci_transport_usb_set_path(int len, uint8_t * port_numbers);
 
+/**	
+ * @brief Specify USB Bluetooth device via device address	
+ */
+void hci_transport_usb_set_address(uint8_t _dev_addr);
+
 /* API_END */
 
 #if defined __cplusplus