Derive macros for ev3dev_lang_rust

This crate provides some derive macros to simplify the codebase.

The following traits can be automatically derived:

• Device
• Findable
• Motor
• TachoMotor
• ServoMotor
• DcMotor
• Sensor

The findable derive needs 3 additional attributes.

• class_name: &str
• driver_name: &str
• port: dyn ev3dev_lang_rust::Motor

Example

The functionallity of the LargeMotor struct consists complitly through derives:

#[derive(Debug, Clone, Device, Findable, Motor, TachoMotor)]
#[class_name = "tacho-motor"]
#[driver_name = "lego-ev3-l-motor"]
#[port = "crate::motors::MotorPort"]
pub struct LargeMotor {
    driver: Driver,
}