commit b832ef71a20f0ff34ca32e9e479bccd739a0a9fc Author: Lorenzo Good Date: Mon Jun 1 13:40:49 2026 -0400 Initial Commit TODOS: 1. Ensure memory.x has correct memory regions. 2. Add HAL loop delay. diff --git a/.cargo/config.toml b/.cargo/config.toml new file mode 100644 index 0000000..45acf6e --- /dev/null +++ b/.cargo/config.toml @@ -0,0 +1,5 @@ +[build] +target = "thumbv7m-none-eabi" +rustflags = [ + "-C", "link-arg=-Tlink.x", +] diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..ea8c4bf --- /dev/null +++ b/.gitignore @@ -0,0 +1 @@ +/target diff --git a/Cargo.lock b/Cargo.lock new file mode 100644 index 0000000..18afc6b --- /dev/null +++ b/Cargo.lock @@ -0,0 +1,285 @@ +# This file is automatically @generated by Cargo. +# It is not intended for manual editing. +version = 4 + +[[package]] +name = "bare-metal" +version = "0.2.5" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "5deb64efa5bd81e31fcd1938615a6d98c82eafcbcd787162b6f63b91d6bac5b3" +dependencies = [ + "rustc_version 0.2.3", +] + +[[package]] +name = "bare-metal" +version = "1.0.0" +source = "registry+https://github.com/rust-lang/crates.io-index" 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We also recommend that a + file or class name and description of purpose be included on the + same "printed page" as the copyright notice for easier + identification within third-party archives. + + Copyright 2026 Lorenzo Good + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. diff --git a/memory.x b/memory.x new file mode 100644 index 0000000..fdf940d --- /dev/null +++ b/memory.x @@ -0,0 +1,23 @@ +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; */ diff --git a/nix/flake.lock b/nix/flake.lock new file mode 100644 index 0000000..c378f14 --- /dev/null +++ b/nix/flake.lock @@ -0,0 +1,48 @@ +{ + "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 +} diff --git a/nix/flake.nix b/nix/flake.nix new file mode 100644 index 0000000..082393f --- /dev/null +++ b/nix/flake.nix @@ -0,0 +1,48 @@ +{ + 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 + ]; + }; + } + ); + }; +} diff --git a/rust-toolchain.toml b/rust-toolchain.toml new file mode 100644 index 0000000..9f7a8dd --- /dev/null +++ b/rust-toolchain.toml @@ -0,0 +1,5 @@ +[toolchain] +channel = "1.96.0" +profile = "default" +targets = ["thumbv7m-none-eabi"] +components = [ "rustfmt", "rust-analyzer", "clippy", "rust-src"] diff --git a/src/main.rs b/src/main.rs new file mode 100644 index 0000000..6fd0448 --- /dev/null +++ b/src/main.rs @@ -0,0 +1,17 @@ +#![no_std] +#![no_main] + +// Halt on all panics. If breaking on a panic is required, b on `rust_begin_unwind`. +#[allow(unused_imports)] +use panic_halt; + +use cortex_m_rt::entry; +use stm32l4xx_hal::{pac, rcc::RccExt}; + +#[entry] +fn main() -> ! { + let dp = pac::Peripherals::take().unwrap(); + let cp = cortex_m::Peripherals::take().unwrap(); + + loop {} +}