diff --git a/src/epd2in9b/graphics.rs b/src/epd2in9b/graphics.rs
index cc7b761..f354e96 100644
--- a/src/epd2in9b/graphics.rs
+++ b/src/epd2in9b/graphics.rs
@@ -1,8 +1,11 @@
 use crate::epd2in9b::{DEFAULT_BACKGROUND_COLOR, HEIGHT, NUM_DISPLAY_BITS, WIDTH};
 use crate::graphics::{Display, DisplayRotation};
-use crate::prelude::*;
+use embedded_graphics::pixelcolor::BinaryColor;
 use embedded_graphics::prelude::*;
 
+/// Full size buffer for use with the 2in9b EPD
+///
+/// Can also be manually constructed and be used together with VarDisplay
 pub struct Display2in9b {
     buffer: [u8; NUM_DISPLAY_BITS as usize],
     rotation: DisplayRotation,
@@ -17,12 +20,15 @@ impl Default for Display2in9b {
     }
 }
 
-impl Drawing<Color> for Display2in9b {
-    fn draw<T>(&mut self, item_pixels: T)
-    where
-        T: IntoIterator<Item = Pixel<Color>>,
-    {
-        self.draw_helper(WIDTH, HEIGHT, item_pixels);
+impl DrawTarget<BinaryColor> for Display2in9b {
+    type Error = core::convert::Infallible;
+
+    fn draw_pixel(&mut self, pixel: Pixel<BinaryColor>) -> Result<(), Self::Error> {
+        self.draw_helper(WIDTH, HEIGHT, pixel)
+    }
+
+    fn size(&self) -> Size {
+        Size::new(WIDTH, HEIGHT)
     }
 }
 
diff --git a/src/epd2in9b/mod.rs b/src/epd2in9b/mod.rs
index a567ecc..6327530 100644
--- a/src/epd2in9b/mod.rs
+++ b/src/epd2in9b/mod.rs
@@ -10,11 +10,15 @@ use crate::traits::{
     InternalWiAdditions, RefreshLUT, WaveshareDisplay, WaveshareThreeColorDisplay,
 };
 
+/// Width of epd2in9b in pixels
 pub const WIDTH: u32 = 128;
+/// Height of epd2in9b in pixels
 pub const HEIGHT: u32 = 296;
-pub const NUM_DISPLAY_BITS: u32 = WIDTH * HEIGHT / 8;
+/// Default background color (white) of epd2in9b display
 pub const DEFAULT_BACKGROUND_COLOR: Color = Color::White;
 
+const NUM_DISPLAY_BITS: u32 = WIDTH * HEIGHT / 8;
+
 const IS_BUSY_LOW: bool = true;
 const VCOM_DATA_INTERVAL: u8 = 0x07;
 const WHITE_BORDER: u8 = 0x70;
@@ -32,7 +36,6 @@ mod graphics;
 #[cfg(feature = "graphics")]
 pub use self::graphics::Display2in9b;
 
-
 /// EPD2in9b driver
 pub struct EPD2in9b<SPI, CS, BUSY, DC, RST> {
     interface: DisplayInterface<SPI, CS, BUSY, DC, RST>,
@@ -211,6 +214,12 @@ where
         Ok(())
     }
 
+    fn update_and_display_frame(&mut self, spi: &mut SPI, buffer: &[u8]) -> Result<(), SPI::Error> {
+        self.update_frame(spi, buffer)?;
+        self.display_frame(spi)?;
+        Ok(())
+    }
+
     fn clear_frame(&mut self, spi: &mut SPI) -> Result<(), SPI::Error> {
         self.send_resolution(spi)?;