fn main() -> Result<(), vf60::Error> { let vf60 = vf60::Driver::open()?; println!( "Detected VF60 display: {} (serial no {}, firmware {}, manufactured {})", vf60.read_device_string(vf60::DeviceString::EquipmentRecognition)?, vf60.read_device_string(vf60::DeviceString::SerialNo)?, vf60.read_device_string(vf60::DeviceString::FirmwareRevision)?, vf60.read_device_string(vf60::DeviceString::ManufactureDate)? ); vf60.clear_display()?; vf60.print("Hello, world!")?; Ok(()) }