run cargo fmt over 4in2 example

examples/embedded_linux_epd4in2/src/main.rs

@@ -1,17 +1,14 @@
 // the library for the embedded linux device
 extern crate linux_embedded_hal as lin_hal;
 use lin_hal::spidev::{self, SpidevOptions};
-use lin_hal::{Pin, Spidev};
 use lin_hal::sysfs_gpio::Direction;
 use lin_hal::Delay;
+use lin_hal::{Pin, Spidev};
 
 // the eink library
 extern crate epd_waveshare;
 use epd_waveshare::{
-    epd4in2::{
+    epd4in2::{Buffer4in2, EPD4in2},
-        EPD4in2,
-        Buffer4in2,
-    },
     graphics::{Display, DisplayRotation},
     prelude::*,
 };
@@ -19,7 +16,7 @@ use epd_waveshare::{
 // Graphics
 extern crate embedded_graphics;
 use embedded_graphics::coord::Coord;
-use embedded_graphics::fonts::{Font6x8, Font12x16};
+use embedded_graphics::fonts::{Font12x16, Font6x8};
 use embedded_graphics::prelude::*;
 use embedded_graphics::primitives::{Circle, Line};
 use embedded_graphics::Drawing;
@@ -37,7 +34,6 @@ fn main() {
 }
 
 fn run() -> Result<(), std::io::Error> {
-
     // Configure SPI
     // Settings are taken from
     let mut spi = Spidev::open("/dev/spidev0.0").expect("spidev directory");
@@ -75,8 +71,8 @@ fn run() -> Result<(), std::io::Error> {
 
     let mut delay = Delay {};
 
-    
+    let mut epd4in2 =
-    let mut epd4in2 = EPD4in2::new(&mut spi, cs, busy, dc, rst, &mut delay).expect("eink initalize error");
+        EPD4in2::new(&mut spi, cs, busy, dc, rst, &mut delay).expect("eink initalize error");
 
     println!("Test all the rotations");
     let mut buffer = Buffer4in2::default();
@@ -117,12 +113,12 @@ fn run() -> Result<(), std::io::Error> {
             .into_iter(),
     );
 
-
     epd4in2.update_frame(&mut spi, &display.buffer()).unwrap();
-    epd4in2.display_frame(&mut spi).expect("display frame new graphics");
+    epd4in2
+        .display_frame(&mut spi)
+        .expect("display frame new graphics");
     delay.delay_ms(5000u16);
 
-
     println!("Now test new graphics with default rotation and some special stuff:");
     display.clear_buffer(Color::White);
 
@@ -169,7 +165,6 @@ fn run() -> Result<(), std::io::Error> {
             .into_iter(),
     );
 
-
     // a moving `Hello World!`
     let limit = 10;
     for i in 0..limit {
@@ -187,12 +182,13 @@ fn run() -> Result<(), std::io::Error> {
         );
 
         epd4in2.update_frame(&mut spi, &display.buffer()).unwrap();
-        epd4in2.display_frame(&mut spi).expect("display frame new graphics");
+        epd4in2
+            .display_frame(&mut spi)
+            .expect("display frame new graphics");
 
         delay.delay_ms(1_000u16);
     }
 
-
     println!("Finished tests - going to sleep");
     epd4in2.sleep(&mut spi)
 }