gba/examples/hello.rs

108 lines
2.8 KiB
Rust
Raw Normal View History

v0.7.0-remake (#168) * Literally clear the repo to nothing for starters * The screen color changes with key presses There's enough code here that the screen color can change when you press the keys. Right now it's most all unsafe code directly in the example file. The strange thing is that llvm is making us define atomic helper functions when it's not supposed to do that, so we need to investigate more before proceeding too much. * can't tell if this is broken or if mgba is busted on mac * unix dumper * don't panic * oops * GbaCell into its own file, also i had broken the rt irq handler. * closer to an acceptable demo. * make IrqFn into just an alias. * wrap most current mmio types. * more stuff * Use paste to remove a whole bunch of repetition (#166) * gba cells are "unwind safe", they can't be in a bad intermediate state, that's the point * Once again we must thank Yandros for saving us from ourselves. * assembly updates. * oops * finish video MMIO basics, no docs yet. * small note. * simplify asm irq handler stack usage. * ewram support. * more cell stuff. * Remove the non-Zlib dependency, sorry Sp00ph :( * add proper dma support. * small docs improvement. * bitmap and oam declarations * more macros * single bit constants will be extremely useful * add `IntrWait` * rename for clarity * improvements * use the new constant * improve sound support * timers * key support * add a prelude module. * fix doc * more and more assembly (mem fns will need global_asm probably) * more comments. * comment updates. * readme * more video support, and put IrqFn alias into interrupts module. * finish working in the EABI code. * CI config. * funding file. * rustc plz inline these functions when you can :3 * "rt0" is unnecessarily cryptic * overhaul the readme. * phrasing Co-authored-by: Sp00ph <61327188+Sp00ph@users.noreply.github.com>
2022-09-28 02:40:05 +10:00
#![no_std]
#![no_main]
use core::fmt::Write;
2022-09-28 09:57:09 +10:00
use gba::{
mgba::{MgbaBufferedLogger, MgbaMessageLevel},
prelude::*,
};
v0.7.0-remake (#168) * Literally clear the repo to nothing for starters * The screen color changes with key presses There's enough code here that the screen color can change when you press the keys. Right now it's most all unsafe code directly in the example file. The strange thing is that llvm is making us define atomic helper functions when it's not supposed to do that, so we need to investigate more before proceeding too much. * can't tell if this is broken or if mgba is busted on mac * unix dumper * don't panic * oops * GbaCell into its own file, also i had broken the rt irq handler. * closer to an acceptable demo. * make IrqFn into just an alias. * wrap most current mmio types. * more stuff * Use paste to remove a whole bunch of repetition (#166) * gba cells are "unwind safe", they can't be in a bad intermediate state, that's the point * Once again we must thank Yandros for saving us from ourselves. * assembly updates. * oops * finish video MMIO basics, no docs yet. * small note. * simplify asm irq handler stack usage. * ewram support. * more cell stuff. * Remove the non-Zlib dependency, sorry Sp00ph :( * add proper dma support. * small docs improvement. * bitmap and oam declarations * more macros * single bit constants will be extremely useful * add `IntrWait` * rename for clarity * improvements * use the new constant * improve sound support * timers * key support * add a prelude module. * fix doc * more and more assembly (mem fns will need global_asm probably) * more comments. * comment updates. * readme * more video support, and put IrqFn alias into interrupts module. * finish working in the EABI code. * CI config. * funding file. * rustc plz inline these functions when you can :3 * "rt0" is unnecessarily cryptic * overhaul the readme. * phrasing Co-authored-by: Sp00ph <61327188+Sp00ph@users.noreply.github.com>
2022-09-28 02:40:05 +10:00
#[panic_handler]
2022-09-28 09:57:09 +10:00
fn panic_handler(info: &core::panic::PanicInfo) -> ! {
if let Ok(mut logger) = MgbaBufferedLogger::try_new(MgbaMessageLevel::Fatal) {
write!(logger, "{info}").ok();
}
v0.7.0-remake (#168) * Literally clear the repo to nothing for starters * The screen color changes with key presses There's enough code here that the screen color can change when you press the keys. Right now it's most all unsafe code directly in the example file. The strange thing is that llvm is making us define atomic helper functions when it's not supposed to do that, so we need to investigate more before proceeding too much. * can't tell if this is broken or if mgba is busted on mac * unix dumper * don't panic * oops * GbaCell into its own file, also i had broken the rt irq handler. * closer to an acceptable demo. * make IrqFn into just an alias. * wrap most current mmio types. * more stuff * Use paste to remove a whole bunch of repetition (#166) * gba cells are "unwind safe", they can't be in a bad intermediate state, that's the point * Once again we must thank Yandros for saving us from ourselves. * assembly updates. * oops * finish video MMIO basics, no docs yet. * small note. * simplify asm irq handler stack usage. * ewram support. * more cell stuff. * Remove the non-Zlib dependency, sorry Sp00ph :( * add proper dma support. * small docs improvement. * bitmap and oam declarations * more macros * single bit constants will be extremely useful * add `IntrWait` * rename for clarity * improvements * use the new constant * improve sound support * timers * key support * add a prelude module. * fix doc * more and more assembly (mem fns will need global_asm probably) * more comments. * comment updates. * readme * more video support, and put IrqFn alias into interrupts module. * finish working in the EABI code. * CI config. * funding file. * rustc plz inline these functions when you can :3 * "rt0" is unnecessarily cryptic * overhaul the readme. * phrasing Co-authored-by: Sp00ph <61327188+Sp00ph@users.noreply.github.com>
2022-09-28 02:40:05 +10:00
loop {}
}
#[link_section = ".ewram"]
2022-10-07 15:11:13 +11:00
static FRAME_KEYS: GbaCell<KeyInput> = GbaCell::new(KeyInput::new());
#[link_section = ".iwram"]
2022-10-07 10:23:32 +11:00
extern "C" fn irq_handler(_: IrqBits) {
2022-10-07 15:11:13 +11:00
// We'll read the keys during vblank and store it for later.
FRAME_KEYS.write(KEYINPUT.read());
v0.7.0-remake (#168) * Literally clear the repo to nothing for starters * The screen color changes with key presses There's enough code here that the screen color can change when you press the keys. Right now it's most all unsafe code directly in the example file. The strange thing is that llvm is making us define atomic helper functions when it's not supposed to do that, so we need to investigate more before proceeding too much. * can't tell if this is broken or if mgba is busted on mac * unix dumper * don't panic * oops * GbaCell into its own file, also i had broken the rt irq handler. * closer to an acceptable demo. * make IrqFn into just an alias. * wrap most current mmio types. * more stuff * Use paste to remove a whole bunch of repetition (#166) * gba cells are "unwind safe", they can't be in a bad intermediate state, that's the point * Once again we must thank Yandros for saving us from ourselves. * assembly updates. * oops * finish video MMIO basics, no docs yet. * small note. * simplify asm irq handler stack usage. * ewram support. * more cell stuff. * Remove the non-Zlib dependency, sorry Sp00ph :( * add proper dma support. * small docs improvement. * bitmap and oam declarations * more macros * single bit constants will be extremely useful * add `IntrWait` * rename for clarity * improvements * use the new constant * improve sound support * timers * key support * add a prelude module. * fix doc * more and more assembly (mem fns will need global_asm probably) * more comments. * comment updates. * readme * more video support, and put IrqFn alias into interrupts module. * finish working in the EABI code. * CI config. * funding file. * rustc plz inline these functions when you can :3 * "rt0" is unnecessarily cryptic * overhaul the readme. * phrasing Co-authored-by: Sp00ph <61327188+Sp00ph@users.noreply.github.com>
2022-09-28 02:40:05 +10:00
}
const TILE_LAYOUT: [u32; 512] = {
// Rust's const eval is limited at the moment, but with a bit of careful math
// we can set up `u32` values that store the right data. Tile maps are 32x32
// `u16` values, so when packing it as `u32` instead we have to throw in some
// `/2` stuff in a few places. Seperately, the tiles that we're using come
// from an image that was drawn as a 16 by 16 tile sheet, so most of the
// layout's area will be left as zero. Thankfully, tile index 0 is a blank
// tile in this tileset, so it all works out.
let mut data = [0; 512];
let mut r = 0;
while r < 16 {
let mut c = 0;
while c < 16 {
let index = r * (32 / 2) + (c / 2);
let a = r * 16 + c;
let b = r * 16 + c + 1;
data[index] = (a as u32) | ((b as u32) << 16);
//
c += 2;
}
//
r += 1;
}
data
};
v0.7.0-remake (#168) * Literally clear the repo to nothing for starters * The screen color changes with key presses There's enough code here that the screen color can change when you press the keys. Right now it's most all unsafe code directly in the example file. The strange thing is that llvm is making us define atomic helper functions when it's not supposed to do that, so we need to investigate more before proceeding too much. * can't tell if this is broken or if mgba is busted on mac * unix dumper * don't panic * oops * GbaCell into its own file, also i had broken the rt irq handler. * closer to an acceptable demo. * make IrqFn into just an alias. * wrap most current mmio types. * more stuff * Use paste to remove a whole bunch of repetition (#166) * gba cells are "unwind safe", they can't be in a bad intermediate state, that's the point * Once again we must thank Yandros for saving us from ourselves. * assembly updates. * oops * finish video MMIO basics, no docs yet. * small note. * simplify asm irq handler stack usage. * ewram support. * more cell stuff. * Remove the non-Zlib dependency, sorry Sp00ph :( * add proper dma support. * small docs improvement. * bitmap and oam declarations * more macros * single bit constants will be extremely useful * add `IntrWait` * rename for clarity * improvements * use the new constant * improve sound support * timers * key support * add a prelude module. * fix doc * more and more assembly (mem fns will need global_asm probably) * more comments. * comment updates. * readme * more video support, and put IrqFn alias into interrupts module. * finish working in the EABI code. * CI config. * funding file. * rustc plz inline these functions when you can :3 * "rt0" is unnecessarily cryptic * overhaul the readme. * phrasing Co-authored-by: Sp00ph <61327188+Sp00ph@users.noreply.github.com>
2022-09-28 02:40:05 +10:00
#[no_mangle]
extern "C" fn main() -> ! {
RUST_IRQ_HANDLER.write(Some(irq_handler));
DISPSTAT.write(DisplayStatus::new().with_irq_vblank(true));
IE.write(IrqBits::VBLANK);
IME.write(true);
2022-09-28 09:57:09 +10:00
if let Ok(mut logger) = MgbaBufferedLogger::try_new(MgbaMessageLevel::Debug) {
writeln!(logger, "hello!").ok();
}
2022-10-07 10:14:34 +11:00
{
// get our tile data into memory.
Cga8x8Thick.bitunpack_4bpp(CHARBLOCK0_4BPP.as_region().sub_slice(..256), 0);
2022-10-07 10:14:34 +11:00
}
2022-10-08 13:52:50 +11:00
{
// get the the tilemap copied into place
let tsb = TextScreenblockAddress::new(31);
tsb.write_words(&TILE_LAYOUT);
2022-10-07 15:11:13 +11:00
}
2022-10-08 13:52:50 +11:00
{
// Set BG0 to use the tilemap we just made, and set it to be shown.
BG0CNT.write(BackgroundControl::new().with_screenblock(31));
DISPCNT.write(DisplayControl::new().with_show_bg0(true));
}
v0.7.0-remake (#168) * Literally clear the repo to nothing for starters * The screen color changes with key presses There's enough code here that the screen color can change when you press the keys. Right now it's most all unsafe code directly in the example file. The strange thing is that llvm is making us define atomic helper functions when it's not supposed to do that, so we need to investigate more before proceeding too much. * can't tell if this is broken or if mgba is busted on mac * unix dumper * don't panic * oops * GbaCell into its own file, also i had broken the rt irq handler. * closer to an acceptable demo. * make IrqFn into just an alias. * wrap most current mmio types. * more stuff * Use paste to remove a whole bunch of repetition (#166) * gba cells are "unwind safe", they can't be in a bad intermediate state, that's the point * Once again we must thank Yandros for saving us from ourselves. * assembly updates. * oops * finish video MMIO basics, no docs yet. * small note. * simplify asm irq handler stack usage. * ewram support. * more cell stuff. * Remove the non-Zlib dependency, sorry Sp00ph :( * add proper dma support. * small docs improvement. * bitmap and oam declarations * more macros * single bit constants will be extremely useful * add `IntrWait` * rename for clarity * improvements * use the new constant * improve sound support * timers * key support * add a prelude module. * fix doc * more and more assembly (mem fns will need global_asm probably) * more comments. * comment updates. * readme * more video support, and put IrqFn alias into interrupts module. * finish working in the EABI code. * CI config. * funding file. * rustc plz inline these functions when you can :3 * "rt0" is unnecessarily cryptic * overhaul the readme. * phrasing Co-authored-by: Sp00ph <61327188+Sp00ph@users.noreply.github.com>
2022-09-28 02:40:05 +10:00
2022-10-07 15:11:13 +11:00
let mut x_off = 0_u32;
let mut y_off = 0_u32;
let mut backdrop_color = Color(0);
v0.7.0-remake (#168) * Literally clear the repo to nothing for starters * The screen color changes with key presses There's enough code here that the screen color can change when you press the keys. Right now it's most all unsafe code directly in the example file. The strange thing is that llvm is making us define atomic helper functions when it's not supposed to do that, so we need to investigate more before proceeding too much. * can't tell if this is broken or if mgba is busted on mac * unix dumper * don't panic * oops * GbaCell into its own file, also i had broken the rt irq handler. * closer to an acceptable demo. * make IrqFn into just an alias. * wrap most current mmio types. * more stuff * Use paste to remove a whole bunch of repetition (#166) * gba cells are "unwind safe", they can't be in a bad intermediate state, that's the point * Once again we must thank Yandros for saving us from ourselves. * assembly updates. * oops * finish video MMIO basics, no docs yet. * small note. * simplify asm irq handler stack usage. * ewram support. * more cell stuff. * Remove the non-Zlib dependency, sorry Sp00ph :( * add proper dma support. * small docs improvement. * bitmap and oam declarations * more macros * single bit constants will be extremely useful * add `IntrWait` * rename for clarity * improvements * use the new constant * improve sound support * timers * key support * add a prelude module. * fix doc * more and more assembly (mem fns will need global_asm probably) * more comments. * comment updates. * readme * more video support, and put IrqFn alias into interrupts module. * finish working in the EABI code. * CI config. * funding file. * rustc plz inline these functions when you can :3 * "rt0" is unnecessarily cryptic * overhaul the readme. * phrasing Co-authored-by: Sp00ph <61327188+Sp00ph@users.noreply.github.com>
2022-09-28 02:40:05 +10:00
loop {
VBlankIntrWait();
2022-10-07 15:11:13 +11:00
// show current frame
BACKDROP_COLOR.write(backdrop_color);
BG0HOFS.write(x_off as u16);
BG0VOFS.write(y_off as u16);
v0.7.0-remake (#168) * Literally clear the repo to nothing for starters * The screen color changes with key presses There's enough code here that the screen color can change when you press the keys. Right now it's most all unsafe code directly in the example file. The strange thing is that llvm is making us define atomic helper functions when it's not supposed to do that, so we need to investigate more before proceeding too much. * can't tell if this is broken or if mgba is busted on mac * unix dumper * don't panic * oops * GbaCell into its own file, also i had broken the rt irq handler. * closer to an acceptable demo. * make IrqFn into just an alias. * wrap most current mmio types. * more stuff * Use paste to remove a whole bunch of repetition (#166) * gba cells are "unwind safe", they can't be in a bad intermediate state, that's the point * Once again we must thank Yandros for saving us from ourselves. * assembly updates. * oops * finish video MMIO basics, no docs yet. * small note. * simplify asm irq handler stack usage. * ewram support. * more cell stuff. * Remove the non-Zlib dependency, sorry Sp00ph :( * add proper dma support. * small docs improvement. * bitmap and oam declarations * more macros * single bit constants will be extremely useful * add `IntrWait` * rename for clarity * improvements * use the new constant * improve sound support * timers * key support * add a prelude module. * fix doc * more and more assembly (mem fns will need global_asm probably) * more comments. * comment updates. * readme * more video support, and put IrqFn alias into interrupts module. * finish working in the EABI code. * CI config. * funding file. * rustc plz inline these functions when you can :3 * "rt0" is unnecessarily cryptic * overhaul the readme. * phrasing Co-authored-by: Sp00ph <61327188+Sp00ph@users.noreply.github.com>
2022-09-28 02:40:05 +10:00
2022-10-07 15:11:13 +11:00
// prep next frame
let k = FRAME_KEYS.read();
backdrop_color = Color(k.to_u16());
if k.up() {
y_off = y_off.wrapping_add(1);
}
if k.down() {
y_off = y_off.wrapping_sub(1);
}
if k.left() {
x_off = x_off.wrapping_add(1);
}
if k.right() {
x_off = x_off.wrapping_sub(1);
}
v0.7.0-remake (#168) * Literally clear the repo to nothing for starters * The screen color changes with key presses There's enough code here that the screen color can change when you press the keys. Right now it's most all unsafe code directly in the example file. The strange thing is that llvm is making us define atomic helper functions when it's not supposed to do that, so we need to investigate more before proceeding too much. * can't tell if this is broken or if mgba is busted on mac * unix dumper * don't panic * oops * GbaCell into its own file, also i had broken the rt irq handler. * closer to an acceptable demo. * make IrqFn into just an alias. * wrap most current mmio types. * more stuff * Use paste to remove a whole bunch of repetition (#166) * gba cells are "unwind safe", they can't be in a bad intermediate state, that's the point * Once again we must thank Yandros for saving us from ourselves. * assembly updates. * oops * finish video MMIO basics, no docs yet. * small note. * simplify asm irq handler stack usage. * ewram support. * more cell stuff. * Remove the non-Zlib dependency, sorry Sp00ph :( * add proper dma support. * small docs improvement. * bitmap and oam declarations * more macros * single bit constants will be extremely useful * add `IntrWait` * rename for clarity * improvements * use the new constant * improve sound support * timers * key support * add a prelude module. * fix doc * more and more assembly (mem fns will need global_asm probably) * more comments. * comment updates. * readme * more video support, and put IrqFn alias into interrupts module. * finish working in the EABI code. * CI config. * funding file. * rustc plz inline these functions when you can :3 * "rt0" is unnecessarily cryptic * overhaul the readme. * phrasing Co-authored-by: Sp00ph <61327188+Sp00ph@users.noreply.github.com>
2022-09-28 02:40:05 +10:00
}
}