Port p;
p.open(port_name);
p.set(9600, Parity::none, StopBits::two, DataBits::eight);
p.write(0x10);
if (auto c = p.read(100ms)) {
    std::cout << "Got: " << *c << std::endl;
} else {
    std::cout << "Didn't receive anything for 100 milliseconds." << std::endl;
}