ssd1306-i2c 0.1.4

SSD1306 I2C driver
Documentation 
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//! Interface factory
//!
//! This is the easiest way to create a driver instance. You can set various parameters of the
//! driver and give it an interface to use. The builder will return a
//! [`mode::RawMode`](../mode/raw/struct.RawMode.html) object which you should coerce to a richer
//! display mode, like [mode::Graphics](../mode/graphics/struct.GraphicsMode.html) for drawing
//! primitives and text.
//!
//! # Examples
//!
//! Connect over I2C, changing lots of options
//!
//! ```rust,no_run
//! use ssd1306_i2c::{displayrotation::DisplayRotation, displaysize::DisplaySize, Builder};
//!
//! let i2c = /* I2C interface from your HAL of choice */

//!
//! Builder::new()
//!     .with_rotation(DisplayRotation::Rotate180)
//!     .with_i2c_addr(0x3D)
//!     .with_size(DisplaySize::Display128x32)
//!     .connect_i2c(i2c);
//! ```
//!
//! The above examples will produce a [RawMode](../mode/raw/struct.RawMode.html) instance
//! by default. You need to coerce them into a mode by specifying a type on assignment. For
//! example, to use [`GraphicsMode` mode](../mode/graphics/struct.GraphicsMode.html):
//!

use core::marker::PhantomData;
//use hal::{self, digital::v2::OutputPin};
use embedded_hal;

use crate::{
    displayrotation::DisplayRotation,
    displaysize::DisplaySize,
    interface::I2cInterface,
    mode::{displaymode::DisplayMode, raw::RawMode},
    properties::DisplayProperties,
};

/// Builder struct. Driver options and interface are set using its methods.
///
/// See the [module level documentation](crate::builder) for more details.
#[derive(Clone, Copy)]
pub struct Builder {
    display_size: DisplaySize,
    rotation: DisplayRotation,
    i2c_addr: u8,
}

impl Default for Builder {
    fn default() -> Self {
        Self::new()
    }
}

impl Builder {
    /// Create new builder with a default size of 128 x 64 pixels and no rotation.
    pub fn new() -> Builder {
        Builder {
            display_size: DisplaySize::Display128x64,
            rotation: DisplayRotation::Rotate0,
            i2c_addr: 0x3c,
        }
    }
}

impl Builder {
    /// Set the size of the display. Supported sizes are defined by [DisplaySize].
    pub fn with_size(self, display_size: DisplaySize) -> Self {
        Self {
            display_size,
            ..self
        }
    }

    /// Set the I2C address to use. Defaults to 0x3C which is the most common address.
    /// The other address specified in the datasheet is 0x3D. Ignored when using SPI interface.
    pub fn with_i2c_addr(self, i2c_addr: u8) -> Self {
        Self { i2c_addr, ..self }
    }

    /// Set the rotation of the display to one of four values. Defaults to no rotation.
    pub fn with_rotation(self, rotation: DisplayRotation) -> Self {
        Self { rotation, ..self }
    }

    /// Finish the builder and use I2C to communicate with the display
    pub fn connect_i2c<I2C>(self, i2c: I2C) -> DisplayMode<RawMode<I2cInterface<I2C>>>
    where
        I2C: embedded_hal::i2c::I2c,
    {
        let properties = DisplayProperties::new(
            I2cInterface::new(i2c, self.i2c_addr),
            self.display_size,
            self.rotation,
            crate::command::AddrMode::Horizontal,
        );
        DisplayMode::<RawMode<I2cInterface<I2C>>>::new(properties)
    }
}