send full buffer instead of loop

examples/embedded_linux_epd4in2/src/main.rs

@@ -112,7 +112,7 @@ fn run() -> Result<(), std::io::Error> {
 
     //TODO: wait for Digital::InputPin
     //fixed currently with the HackInputPin, see further above
-    let mut epd4in2 = EPD4in2::new(&mut spi, cs, busy_in, dc, rst, &mut delay).expect("eink inialize error");
+    let mut epd4in2 = EPD4in2::new(&mut spi, cs, busy_in, dc, rst, &mut delay).expect("eink initalize error");
 
     //let mut buffer =  [0u8, epd4in2.get_width() / 8 * epd4in2.get_height()];
     let mut buffer = [0u8; 15000];

src/epd4in2/mod.rs

@@ -192,9 +192,10 @@ where
 
 
         self.command(spi, Command::DATA_START_TRANSMISSION_1)?;
-        for _ in 0..buffer.len() {
-            self.send_data(spi, &[color_value])?;
-        }
+        self.send_data(spi, &[color_value; WIDTH as usize / 8 * HEIGHT as usize]);
+        //for _ in 0..buffer.len() {
+        //    self.send_data(spi, &[color_value])?;
+        //}
 
         //TODO: Removal of delay. TEST!
         //self.delay_ms(2);