Trait UsbContext

Source
pub trait UsbContext {
    // Required method
    fn scan(
        &self,
        usb_vid: Option<u16>,
        usb_pid: Option<u16>,
        usb_protocol: Option<(u8, u8, u8)>,
        usb_serial: Option<&str>,
    ) -> Result<Vec<Box<dyn UsbDevice>>>;

    // Provided methods
    fn device_by_id(
        &self,
        usb_vid: u16,
        usb_pid: u16,
        usb_serial: Option<&str>,
    ) -> Result<Box<dyn UsbDevice>> { ... }
    fn device_by_id_with_timeout(
        &self,
        usb_vid: u16,
        usb_pid: u16,
        usb_serial: Option<&str>,
        timeout: Duration,
    ) -> Result<Box<dyn UsbDevice>> { ... }
    fn device_by_interface(
        &self,
        class: u8,
        subclass: u8,
        protocol: u8,
        usb_serial: Option<&str>,
    ) -> Result<Box<dyn UsbDevice>> { ... }
    fn device_by_interface_with_timeout(
        &self,
        class: u8,
        subclass: u8,
        protocol: u8,
        usb_serial: Option<&str>,
        timeout: Duration,
    ) -> Result<Box<dyn UsbDevice>> { ... }
}
Expand description

A trait which represents a USB context.

Required Methods§

Source

fn scan( &self, usb_vid: Option<u16>, usb_pid: Option<u16>, usb_protocol: Option<(u8, u8, u8)>, usb_serial: Option<&str>, ) -> Result<Vec<Box<dyn UsbDevice>>>

Scan the USB bus for devices matching VID/PID, and optionally also matching a serial number. This method always returns immediately with the list of currently plugged devices matching the requested criteria.

Provided Methods§

Source

fn device_by_id( &self, usb_vid: u16, usb_pid: u16, usb_serial: Option<&str>, ) -> Result<Box<dyn UsbDevice>>

Find a device by VID:PID, and optionally disambiguate by serial number.

If no device matches, this function returns immediately and does not wait.

Source

fn device_by_id_with_timeout( &self, usb_vid: u16, usb_pid: u16, usb_serial: Option<&str>, timeout: Duration, ) -> Result<Box<dyn UsbDevice>>

Find a device by VID:PID, and optionally disambiguate by serial number.

If no device matches, this function will keep trying until the provided timeout expires.

Source

fn device_by_interface( &self, class: u8, subclass: u8, protocol: u8, usb_serial: Option<&str>, ) -> Result<Box<dyn UsbDevice>>

Find a device with a specific interface, and optionally disambiguate by serial number.

If no device matches, this function returns immediately and does not wait.

Source

fn device_by_interface_with_timeout( &self, class: u8, subclass: u8, protocol: u8, usb_serial: Option<&str>, timeout: Duration, ) -> Result<Box<dyn UsbDevice>>

Find a device with a specific interface, and optionally disambiguate by serial number.

If no device matches, this function will keep trying until the provided timeout expires.

Implementors§