38 lines
947 B
Rust
38 lines
947 B
Rust
use anyhow::{anyhow, Result};
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use log::{debug, error, info, warn};
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use std::{
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fs::{File, OpenOptions},
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io::{Read, Write},
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str::from_utf8,
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};
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fn main() -> Result<()> {
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pretty_env_logger::try_init()?;
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let mut controller_data = [0; 4];
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let mut vblank = File::open("vblank")?;
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let mut input = OpenOptions::new().write(true).open("input")?;
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info!("ready");
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loop {
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let mut data = [0; 3];
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debug!("waiting for vblank");
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vblank.read(&mut data)?;
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let str = from_utf8(&data)?;
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debug!("got data: {}", str);
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match str {
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"OK\n" => input.write(&controller_data)?,
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"BYE" => {
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warn!("asked to exit by the game");
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return Ok(());
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},
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_ => {
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error!("got unknown FIFO data {}", str);
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return Err(anyhow!("unknown FIFO data received"));
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}
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};
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}
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}
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