Add clear_screen function

src/graphics_core.rs

@@ -1,5 +1,4 @@
 use crate::Ili9341;
-
 use embedded_graphics_core::{
     pixelcolor::{raw::RawU16, Rgb565},
     prelude::*,
@@ -82,4 +81,8 @@ where
             Ok(())
         }
     }
+
+    fn clear(&mut self, color: Self::Color) -> Result<(), Self::Error> {
+        self.clear_screen(RawU16::from(color).into_inner())
+    }
 }

src/lib.rs

@@ -313,6 +313,12 @@ where
         self.landscape = mode.is_landscape();
         Ok(())
     }
+
+    /// Fill entire screen with specfied color u16 value
+    pub fn clear_screen(&mut self, color: u16) -> Result {
+        let color = core::iter::repeat(color).take(self.width * self.height);
+        self.draw_raw_iter(0, 0, self.width as u16, self.height as u16, color)
+    }
 }
 
 impl<IFACE, RESET> Ili9341<IFACE, RESET> {