Implement full SSD1306 OLED display support: - Splash screen on boot (1.5s) with project name, version, board - Dashboard showing radio state, config, counters, RSSI/SNR - RSSI history sparkline (64-sample ring buffer, 2px-wide bars) - DisplayOn/DisplayOff host commands routed via dedicated channel - Pure render functions against generic DrawTarget (no hardware coupling) - Display on/off control bypasses radio task entirely Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
#[macro_use(defer)]
extern crate scopeguard;
use scopeguard::guard;
fn f() {
defer! {
println!("Called at return or panic");
}
panic!();
}
use std::fs::File;
use std::io::Write;
fn g() {
let f = File::create("newfile.txt").unwrap();
let mut file = guard(f, |f| {
// write file at return or panic
let _ = f.sync_all();
});
// access the file through the scope guard itself
file.write_all(b"test me\n").unwrap();
}
fn main() {
f();
g();
}