stm32: codegen interrupts

embassy-stm32/build.rs

@@ -0,0 +1,34 @@
+use regex::Regex;
+use std::fmt::Write as _;
+use std::fs::File;
+use std::io::Write;
+use std::path::PathBuf;
+use std::{env, fs};
+
+fn main() {
+    let chip = env::vars_os()
+        .map(|(a, _)| a.to_string_lossy().to_string())
+        .find(|x| x.starts_with("CARGO_FEATURE_STM32"))
+        .expect("No stm32xx Cargo feature enabled")
+        .strip_prefix("CARGO_FEATURE_")
+        .unwrap()
+        .to_ascii_lowercase();
+
+    let mut device_x = String::new();
+
+    let chip_rs = fs::read_to_string(format!("src/chip/{}.rs", chip)).unwrap();
+    let re = Regex::new("declare!\\(([a-zA-Z0-9_]+)\\)").unwrap();
+    for c in re.captures_iter(&chip_rs) {
+        let name = c.get(1).unwrap().as_str();
+        write!(&mut device_x, "PROVIDE({} = DefaultHandler);\n", name).unwrap();
+    }
+
+    let out = &PathBuf::from(env::var_os("OUT_DIR").unwrap());
+    File::create(out.join("device.x"))
+        .unwrap()
+        .write_all(device_x.as_bytes())
+        .unwrap();
+    println!("cargo:rustc-link-search={}", out.display());
+    println!("cargo:rerun-if-changed=src/chip/{}.rs", chip);
+    println!("cargo:rerun-if-changed=build.rs");
+}