diff --git a/test_com.c b/test_com.c
new file mode 100644
index 0000000..01e5fb5
--- /dev/null
+++ b/test_com.c
@@ -0,0 +1,51 @@
+#include <libusb-1.0/libusb.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+int main(){
+	// init
+	libusb_context *context;
+	int status = libusb_init(&context);
+	if(status != 0){perror("libusb_init"); exit(-1);}
+
+	// devices list
+	libusb_device **devices;
+	ssize_t devices_count = libusb_get_device_list(context, &devices);
+	if(devices_count < 0){perror("libusb_get_device_list"); exit(-1);}
+	for(int i=0; i<devices_count; i++){
+		libusb_device *device = devices[i];
+
+		// open connection
+		libusb_device_handle *handle;
+		status=libusb_open(device,&handle);
+		if(status!=0){ perror("libusb_open"); exit(-1); }
+
+		// init interface
+		// TODO int interface = valueof("bInterfaceNumber");
+		status = libusb_claim_interface(handle, interface);
+		if(status != 0){perror("libusb_claim_interface"); exit(-1);}
+
+		// detach kernel
+		if(libusb_kernel_driver_active(handle, interface)){
+			status = libusb_detach_kernel_driver(handle, interface);
+			if(status != 0){perror("libusb_detach_kernel_driver"); exit(-1);}
+		}
+
+		// use config
+		// TODO int configuration = valueof("bConfigurationValue");
+		status = libusb_set_configuration(handle, configuration);
+		if(status != 0){perror("libusb_set_configuration"); exit(-1);}
+
+		/* ... some code ... */
+
+		// close interface
+		status = libusb_release_interface(handle, interface);
+		if(status != 0){perror("libusb_release_interface"); exit(-1);}
+
+		// close connection
+		libusb_close(handle);
+	}
+	libusb_free_device_list(devices, 1);
+
+	libusb_exit(context);
+}
diff --git a/test_params.c b/test_params.c
new file mode 100644
index 0000000..dbdd38b
--- /dev/null
+++ b/test_params.c
@@ -0,0 +1,32 @@
+#include <libusb-1.0/libusb.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+int main(){
+	// init
+	libusb_context *context;
+	int status = libusb_init(&context);
+	if(status != 0){perror("libusb_init"); exit(-1);}
+
+	// devices list
+	libusb_device **devices;
+	ssize_t devices_count = libusb_get_device_list(context, &devices);
+	if(devices_count < 0){perror("libusb_get_device_list");exit(-1);}
+	for(int i=0; i<devices_count; i++){
+		libusb_device *device = devices[i];
+
+		struct libusb_device_descriptor desc;
+		int status = libusb_get_device_descriptor(device, &desc);
+		if(status != 0) continue;
+
+		uint8_t bus = libusb_get_bus_number(device);
+		uint8_t address = libusb_get_device_address(device);
+
+		printf("Device Found @ (Bus:Address) %d:%d\n", bus, address);
+		printf("Vendor ID 0x0%x\n", desc.idVendor);
+		printf("Product ID 0x0%x\n", desc.idProduct);
+	}
+	libusb_free_device_list(devices, 1);
+
+	libusb_exit(context);
+}
--
libgit2 0.21.2