Add DisplaySize configuration for 64x32 displays (#166)

Author: carlossless

CHANGELOG.md

@@ -9,6 +9,7 @@
 ### Added
 
 - [#161](https://github.com/jamwaffles/ssd1306/pull/161) Added a `set_mirror` method to enable or disable display mirroring.
+- [#166](https://github.com/jamwaffles/ssd1306/pull/166) Added `DisplaySize` configuration for 64x32 displays
 
 ## [0.7.0] - 2021-07-08
 

src/size.rs

@@ -119,3 +119,18 @@ impl DisplaySize for DisplaySize64x48 {
         Command::ComPinConfig(true, false).send(iface)
     }
 }
+
+/// Size information for the common 64x32 variants
+#[derive(Debug, Copy, Clone)]
+pub struct DisplaySize64x32;
+impl DisplaySize for DisplaySize64x32 {
+    const WIDTH: u8 = 64;
+    const HEIGHT: u8 = 32;
+    const OFFSETX: u8 = 32;
+    const OFFSETY: u8 = 0;
+    type Buffer = [u8; Self::WIDTH as usize * Self::HEIGHT as usize / 8];
+
+    fn configure(&self, iface: &mut impl WriteOnlyDataCommand) -> Result<(), DisplayError> {
+        Command::ComPinConfig(true, false).send(iface)
+    }
+}