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donglora/build.rs
T
swaits 0943274496 refactor: extract shared ESP32-S3 board module
Move common type aliases, peripheral bundles, and init helpers for
ESP32-S3 boards into src/board/esp32s3.rs. Heltec V3 (146->48 lines)
and V4 (155->57 lines) become thin wrappers containing only
board-specific code (Vext GPIO pin, display reset sequence).

Update build.rs to exclude esp32s3.rs from board discovery and
mod.rs.j2 to include the shared module under an ESP feature gate.
2026-03-31 17:31:55 -06:00

67 lines
2.2 KiB
Rust

use minijinja::{context, Environment};
use owo_colors::OwoColorize;
use std::fs;
fn main() {
// Protocol tests run on the host without a board feature. Cargo doesn't
// expose `cfg(test)` to build scripts, so we rely on an env var set by
// the justfile `test` recipe. See: `just test`
if std::env::var_os("DONGLORA_HOST_TEST").is_some() {
return;
}
let board_dir = "src/board";
let boards: Vec<String> = fs::read_dir(board_dir)
.expect("failed to read src/board directory")
.filter_map(|e| {
let p = e.ok()?.path();
let stem = p.file_stem()?.to_str()?;
// Exclude non-board files: mod.rs, traits.rs, and platform helpers (esp32s3.rs).
if p.is_file()
&& p.extension()? == "rs"
&& !matches!(stem, "mod" | "traits" | "esp32s3")
{
return Some(p.file_stem()?.to_str()?.to_string());
}
None
})
.collect();
let enabled: Vec<_> = std::env::vars()
.filter(|(k, _)| k.starts_with("CARGO_FEATURE_"))
.map(|(k, _)| k.replace("CARGO_FEATURE_", "").to_lowercase())
.filter(|f| boards.contains(f))
.collect();
match enabled.len() {
0 => panic!(
"\n\n{}\n",
format!("No board selected! Found: {:?}", boards)
.red()
.bold()
),
1 => println!("cargo:rustc-cfg=board_selected"),
_ => panic!(
"\n\n{}\n",
format!("Conflict: Multiple boards enabled {:?}", enabled)
.yellow()
.bold()
),
}
let mut env = Environment::new();
let template =
fs::read_to_string("src/board/mod.rs.j2").expect("missing src/board/mod.rs.j2");
env.add_template("mod", &template)
.expect("failed to parse board template");
let rendered = env
.get_template("mod")
.expect("template not found")
.render(context!(boards => boards))
.expect("failed to render board module");
fs::write("src/board/mod.rs", rendered).expect("failed to write src/board/mod.rs");
println!("cargo:rerun-if-changed=src/board/mod.rs.j2");
println!("cargo:rerun-if-changed={}", board_dir);
}