added begin()

drawBitmap()
      display()
      exports for testing purposes

arduboy-rust/src/lib.rs

@@ -38,3 +38,4 @@ pub use crate::library::ardvoice::{self, ArdVoice};
 pub use crate::library::eeprom::{EEPROM, EEPROMBYTE};
 pub use crate::library::{arduino, c, sprites};
 pub mod serial_print;
+

arduboy-rust/src/library/arduboyfx.rs

@@ -0,0 +1,8 @@
+
+
+
+extern "C" {
+    #[link_name = "arduboyfx_begin"]
+    fn arduboyfx_begin();
+
+}

arduboy-rust/src/library/mod.rs

@@ -7,3 +7,4 @@ pub mod c;
 pub mod eeprom;
 pub mod progmem;
 pub mod sprites;
+pub mod arduboyfx;