esp32c2-hal 0.5.1

HAL for ESP32-C2 microcontrollers
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89

use std::{env, fs::File, io::Write, path::PathBuf};

#[cfg(feature = "direct-boot")]
fn main() {
    check_features();

    // Put the linker script somewhere the linker can find it
    let out = &PathBuf::from(env::var_os("OUT_DIR").unwrap());

    File::create(out.join("memory.x"))
        .unwrap()
        .write_all(include_bytes!("ld/db-esp32c2-memory.x"))
        .unwrap();

    File::create(out.join("esp32c2-link.x"))
        .unwrap()
        .write_all(include_bytes!("ld/db-esp32c2-link.x"))
        .unwrap();

    File::create(out.join("riscv-link.x"))
        .unwrap()
        .write_all(include_bytes!("ld/db-riscv-link.x"))
        .unwrap();

    File::create(out.join("linkall.x"))
        .unwrap()
        .write_all(include_bytes!("ld/db-linkall.x"))
        .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");

    add_defaults();
}

#[cfg(not(feature = "direct-boot"))]
fn main() {
    check_features();

    // Put the linker script somewhere the linker can find it
    let out = &PathBuf::from(env::var_os("OUT_DIR").unwrap());
    File::create(out.join("memory.x"))
        .unwrap()
        .write_all(include_bytes!("ld/bl-esp32c2-memory.x"))
        .unwrap();

    File::create(out.join("bl-riscv-link.x"))
        .unwrap()
        .write_all(include_bytes!("ld/bl-riscv-link.x"))
        .unwrap();

    File::create(out.join("linkall.x"))
        .unwrap()
        .write_all(include_bytes!("ld/bl-linkall.x"))
        .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");

    add_defaults();
}

fn check_features() {
    if cfg!(feature = "xtal40mhz") && cfg!(feature = "xtal26mhz") {
        panic!("Only one xtal speed feature can be selected");
    }
}

fn add_defaults() {
    let out = &PathBuf::from(env::var_os("OUT_DIR").unwrap());

    File::create(out.join("hal-defaults.x"))
        .unwrap()
        .write_all(include_bytes!("ld/hal-defaults.x"))
        .unwrap();

    File::create(out.join("rom-functions.x"))
        .unwrap()
        .write_all(include_bytes!("ld/rom-functions.x"))
        .unwrap();

    println!("cargo:rustc-link-search={}", out.display());
}