ACL4080 set mode

#include <libusb-1.0/libusb.h>
#include <iostream>
#include <cstdint>

constexpr std::uint16_t vendor_id = 0x0db0;
constexpr std::uint16_t product_id = 0xcd0e;
//constexpr unsigned char mode = 0b00000100;

struct usb_exit
{
    ~usb_exit()
    {
        libusb_exit(nullptr);
    }
};

struct usb_device_guard
{
    libusb_device_handle *m_handle;

    ~usb_device_guard()
    {
        libusb_close(m_handle);
    }
};

int main()
{
    int result = libusb_init(nullptr);
    if ( result < 0 )
    {
        std::cerr << "Error initializing libusb: " << libusb_error_name(result) << '\n';
        return 1;
    }
    usb_exit usb_exit_guard;

    libusb_set_option(nullptr, LIBUSB_OPTION_LOG_LEVEL, LIBUSB_LOG_LEVEL_WARNING);

    auto device_handle = libusb_open_device_with_vid_pid(nullptr, vendor_id, product_id);
    if(!device_handle)
    {
        std::cerr << "Error opening usb device.\n";
        return 1;
    }
    usb_device_guard dguard{device_handle};

    unsigned char data[1] = {0b00000010};
    if ((result = libusb_control_transfer(device_handle, 0x40, 108, 0, 1, data, 1, 0)) < 0)
    {
        std::cerr << "libusb_control_transfer error: " << libusb_error_name(result) << '\n';
        return 1;
    }

    data[0] = 0b00000100;
    if ((result = libusb_control_transfer(device_handle, 0x40, 108, 0, 1, data, 1, 0)) < 0)
    {
        std::cerr << "libusb_control_transfer error: " << libusb_error_name(result) << '\n';
        return 1;
    }

    return 0;
}