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TODOS:
1. Ensure memory.x has correct memory regions.
2. Add HAL loop delay.
This commit is contained in:
Lorenzo Good 2026-06-01 13:40:49 -04:00
commit 0f9e7ebb58
Signed by: lorenzo
GPG key ID: 7FCD64BD81180ED0
10 changed files with 647 additions and 0 deletions
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5
.cargo/config.toml Normal file
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[build]
target = "thumbv7m-none-eabi"
rustflags = [
"-C", "link-arg=-Tlink.x",
]

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.gitignore vendored Normal file
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/target

285
Cargo.lock generated Normal file
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# This file is automatically @generated by Cargo.
# It is not intended for manual editing.
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dependencies = [
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]

12
Cargo.toml Normal file
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[package]
name = "horn_driver"
version = "0.1.0"
edition = "2024"
[dependencies]
cortex-m = "0.7.7"
cortex-m-rt = "0.7.5"
panic-halt = "1.0.0"
stm32l4xx-hal = { version = "0.7.1", features = ["rt", "stm32l433"] }

201
LICENSE Normal file
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23
memory.x Normal file
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MEMORY
{
/* NOTE K = KiBi = 1024 bytes */
/* TODO Adjust these memory regions to match your device memory layout */
FLASH : ORIGIN = 0x8000000, LENGTH = 128K
RAM : ORIGIN = 0x20000000, LENGTH = 32K
}
/* This is where the call stack will be allocated. */
/* The stack is of the full descending type. */
/* You may want to use this variable to locate the call stack and static
variables in different memory regions. Below is shown the default value */
/* _stack_start = ORIGIN(RAM) + LENGTH(RAM); */
/* You can use this symbol to customize the location of the .text section */
/* If omitted the .text section will be placed right after the .vector_table
section */
/* This is required only on microcontrollers that store some configuration right
after the vector table */
/* _stext = ORIGIN(FLASH) + 0x400; */
/* Size of the heap (in bytes) */
/* _heap_size = 1024; */

48
nix/flake.lock generated Normal file
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{
"nodes": {
"nixpkgs": {
"locked": {
"lastModified": 1779796641,
"narHash": "sha256-ZsIrKmhp4vbBXoXXmR/tBXA/UCsAQiJL9vsgZEduhVY=",
"owner": "nixos",
"repo": "nixpkgs",
"rev": "25f538306313eae3927264466c70d7001dcea1df",
"type": "github"
},
"original": {
"owner": "nixos",
"ref": "nixos-25.11",
"repo": "nixpkgs",
"type": "github"
}
},
"root": {
"inputs": {
"nixpkgs": "nixpkgs",
"rust-overlay": "rust-overlay"
}
},
"rust-overlay": {
"inputs": {
"nixpkgs": [
"nixpkgs"
]
},
"locked": {
"lastModified": 1780284119,
"narHash": "sha256-y2wR4Mk6D/N1ID4FZa2oUMStCUxyIoRzmgOOpLzoWmo=",
"owner": "oxalica",
"repo": "rust-overlay",
"rev": "51390d0bfca0a68a8c337d215a4bbeddc2ca616e",
"type": "github"
},
"original": {
"owner": "oxalica",
"repo": "rust-overlay",
"type": "github"
}
}
},
"root": "root",
"version": 7
}

48
nix/flake.nix Normal file
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{
inputs = {
nixpkgs.url = "github:nixos/nixpkgs/nixos-25.11";
rust-overlay = {
url = "github:oxalica/rust-overlay";
inputs.nixpkgs.follows = "nixpkgs";
};
};
outputs =
inputs@{ ... }:
let
supportedSystems = [
"x86_64-linux"
"aarch64-linux"
"x86_64-darwin"
"aarch64-darwin"
];
forAllSystems = inputs.nixpkgs.lib.genAttrs supportedSystems;
buildNixpkgs =
system:
import inputs.nixpkgs {
inherit system;
overlays = [ (import inputs.rust-overlay) ];
};
in
{
devShells = forAllSystems (
system:
let
pkgs = buildNixpkgs system;
rust-toolchain = pkgs.rust-bin.fromRustupToolchainFile ../rust-toolchain.toml;
in
{
default = pkgs.mkShell {
buildInputs = with pkgs; [
gcc-arm-embedded-13
treefmt
nixpkgs-fmt
rust-toolchain
];
};
}
);
};
}

5
rust-toolchain.toml Normal file
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[toolchain]
channel = "1.96.0"
profile = "default"
targets = ["thumbv7m-none-eabi"]
components = [ "rustfmt", "rust-analyzer", "clippy", "rust-src"]

19
src/main.rs Normal file
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#![no_std]
#![no_main]
use cortex_m_rt::entry;
#[allow(unused_imports)]
use panic_halt;
use stm32l4xx_hal::{pac, rcc::RccExt};
#[entry]
fn main() -> ! {
let dp = pac::Peripherals::take().unwrap();
// let cp = cortex_m::Peripherals::take().unwrap();
let mut _rcc = dp.RCC.constrain();
loop {}
}