Macro with_class 

macro_rules! with_class {
    ( $x:expr, $l:expr, $p:ident ) => { ... };
    ( $x:expr, $l:expr, $p:ident, $h:ty ) => { ... };
}

Initialize the USB serial logger from a serial class and return the future to run it. The future never returns.

Arguments specify the buffer size, log level and the serial class, respectively. You can optionally add a RecieverHandler.

Usage

embassy_usb_logger::with_class!(1024, log::LevelFilter::Info, class).await; //never returns.

Safety

This macro should only be invoked only once since it is setting the global logging state of the application.