fixed size from 32mb to 32kb

core/src/periph/at28c256.rs

@@ -28,7 +28,7 @@ impl RomChip for At28C256 {
         self.data[*offset as usize]
     }
 
-    fn program(new_data: Box<[u8; 33554432]>) -> Box<At28C256> {
+    fn program(new_data: Box<[u8; SIZE_32KB]>) -> Box<At28C256> {
         println!("Writing new chip.");
         let mut working = At28C256::default();
         working.data = Box::new(*new_data);