test_list_devices.c 944 Bytes
#include <libusb-1.0/libusb.h>
#include <stdio.h>
#include <stdlib.h>

// gcc file.c -l usb-1.0

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);
}