mirror of
https://github.com/italicsjenga/gba.git
synced 2024-12-23 19:01:30 +11:00
48 lines
1.2 KiB
Rust
48 lines
1.2 KiB
Rust
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#![no_std]
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#![no_main]
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use core::fmt::Write;
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use gba::prelude::*;
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#[panic_handler]
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fn panic_handler(info: &core::panic::PanicInfo) -> ! {
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if let Ok(mut logger) = MgbaBufferedLogger::try_new(MgbaMessageLevel::Fatal) {
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writeln!(logger, "{info}").ok();
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}
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loop {}
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}
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#[no_mangle]
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extern "C" fn main() -> ! {
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DISPSTAT.write(DisplayStatus::new().with_irq_vblank(true));
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IE.write(IrqBits::VBLANK);
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IME.write(true);
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TIMER0_CONTROL.write(TimerControl::new().with_enabled(true));
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Cga8x8Thick.bitunpack_4bpp(CHARBLOCK0_4BPP.as_region(), 0);
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Cga8x8Thick.bitunpack_4bpp(OBJ_TILES.as_region(), 0);
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BG_PALETTE.index(1).write(Color::MAGENTA);
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OBJ_PALETTE.index(1).write(Color::CYAN);
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let no_display = ObjAttr0::new().with_style(ObjDisplayStyle::NotDisplayed);
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OBJ_ATTR0.iter().for_each(|va| va.write(no_display));
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let mut obj = ObjAttr::new();
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obj.set_x(13);
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obj.set_y(37);
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obj.set_tile_id(1);
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OBJ_ATTR_ALL.index(0).write(obj);
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DISPCNT.write(DisplayControl::new().with_show_obj(true));
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loop {
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VBlankIntrWait();
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let keys = KEYINPUT.read();
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if keys.a() {
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let t = TIMER0_COUNT.read();
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BACKDROP_COLOR.write(Color(t));
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}
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}
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}
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