async fn blink(
        blink::Context {
            shared:
                blink::SharedResources {
                    mut red_led,
                    mut usb_serial,
                    ..
                },
            ..
        }: blink::Context,
    ) {
        loop {
            (&red_led, &usb_serial).lock(|led, s| {
                led.toggle().unwrap();
                let _ = s.write(b"fjdklsf");
            });
            // usb_serial.lock(|s| {
            //     red_led.lock(|led| {
            //         led.toggle().unwrap();
            //         let _ = s.write(b"fjdklsf");
            //     })
            // });
            Mono::delay(2u64.secs()).await;
       }
    }