gistfile1.rs

impl<U: UsbCore> UsbClass<U> for CdcAcmClass<U> {
    fn configure(&mut self, mut config: Config<U>) -> Result<()> {
        const DESC: InterfaceDescriptor = InterfaceDescriptor::class(USB_CLASS_CDC)
            .sub_class(CDC_SUBCLASS_ACM).protocol(CDC_PROTOCOL_NONE);

        config
            .interface_association(|a| a
                .interface(&mut self.comm_if, DESC, |i| i
                    .descriptor(
                        CS_INTERFACE,
                        &[
                            CDC_TYPE_HEADER, // bDescriptorSubtype
                            0x10, 0x01 // bcdCDC (1.10)
                        ])?

                    .descriptor(
                        CS_INTERFACE,
                        &[
                            CDC_TYPE_ACM, // bDescriptorSubtype
                            0x00 // bmCapabilities
                        ])?

                    .descriptor(
                        CS_INTERFACE,
                        &[
                            CDC_TYPE_UNION, // bDescriptorSubtype
                            (&self.comm_if).into(), // bControlInterface
                            (&self.data_if).into() // bSubordinateInterface
                        ])?

                    .descriptor(
                        CS_INTERFACE,
                        &[
                            CDC_TYPE_CALL_MANAGEMENT, // bDescriptorSubtype
                            0x00, // bmCapabilities
                            (&self.data_if).into() // bDataInterface
                        ])?

                    .endpoint_in(&mut self.comm_ep))

                .interface(
                    &mut self.data_if,
                    InterfaceDescriptor::class(USB_CLASS_CDC_DATA),
                    |i| i
                        .endpoint_in(&mut self.write_ep)?
                        .endpoint_out(&mut self.read_ep)?));

        Ok(())
    }
}