esp32c2-hal 0.12.0

HAL for ESP32-C2 microcontrollers
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use std::{env, error::Error, path::PathBuf};

fn main() -> Result<(), Box<dyn Error>> {
    check_features();

    // Put the linker script somewhere the linker can find it
    let out = &PathBuf::from(env::var_os("OUT_DIR").unwrap());
    println!("cargo:rustc-link-search={}", out.display());

    // Only re-run the build script when memory.x is changed,
    // instead of when any part of the source code changes.
    println!("cargo:rerun-if-changed=ld/memory.x");

    #[cfg(feature = "defmt")]
    println!("cargo:rustc-link-arg=-Tdefmt.x");

    Ok(())
}

fn check_features() {
    if cfg!(feature = "xtal-40mhz") && cfg!(feature = "xtal-26mhz") {
        panic!("Only one xtal speed feature can be selected");
    }
}