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‎.cargo/config.toml‎

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[target.xtensa-esp32-none-elf]
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runner = "espflash flash --monitor --chip esp32 --log-format defmt"
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[env]
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DEFMT_LOG = "info"
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[build]
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target = "xtensa-esp32-none-elf"
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rustflags = ["-C", "link-arg=-nostartfiles"]
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[unstable]
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build-std = ["alloc", "core"]

‎.devcontainer/Dockerfile‎

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# syntax=docker.io/docker/dockerfile:1.19
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# shellcheck shell=bash
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# see https://github.com/rust-lang/rustup/tags/
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# renovate: datasource=github-releases depName=rust-lang/rustup
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ARG RUSTUP_INIT_VERSION='1.28.2'
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# see https://github.com/cargo-bins/cargo-binstall/releases
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# renovate: datasource=github-releases depName=cargo-bins/cargo-binstall
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ARG CARGO_BINSTALL_VERSION='1.15.9'
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# see https://github.com/esp-rs/espup/releases/
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# renovate: datasource=github-releases depName=esp-rs/espup
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ARG ESPUP_VERSION='0.16.0'
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# see https://github.com/rust-lang/rust/releases
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# NB to make things simpler. keep this in sync with ESP_RUST_VERSION bellow.
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# renovate: datasource=github-tags depName=rust-lang/rust
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ARG RUST_VERSION='1.90.0'
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# see https://github.com/esp-rs/rust-build/releases
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# renovate: datasource=github-releases depName=esp-rs/rust-build
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ARG ESP_RUST_VERSION='1.90.0.0'
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# see https://crates.io/crates/espflash
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# see https://github.com/esp-rs/espflash/releases
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# renovate: datasource=github-releases depName=esp-rs/espflash
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ARG ESPFLASH_VERSION='4.2.0'
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# see https://crates.io/crates/esp-generate
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# see https://github.com/esp-rs/esp-generate/releases
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# renovate: datasource=github-releases depName=esp-rs/esp-generate
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ARG ESP_GENERATE_VERSION='1.0.0'
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# see https://github.com/devcontainers/images/tree/main/src/base-debian/history
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FROM mcr.microsoft.com/devcontainers/base:2.0.2-trixie
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RUN <<'EOF'
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#!/usr/bin/bash
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set -euxo pipefail
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export DEBIAN_FRONTEND=noninteractive
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apt-get update
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apt-get -y install --no-install-recommends \
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bash-completion \
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curl \
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sudo \
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unzip \
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wget
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apt-get clean
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rm -rf /var/lib/apt/lists/*
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EOF
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USER vscode
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# install rustup.
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# see https://github.com/rust-lang/rustup/tags.
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# see https://rust-lang.github.io/rustup/installation/other.html#manual-installation
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# see https://github.com/rgl/my-ubuntu-ansible-playbooks/blob/main/roles/rust/files/install-rust.sh
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ARG RUSTUP_INIT_VERSION
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RUN <<'EOF'
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#!/usr/bin/bash
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set -euxo pipefail
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u="https://static.rust-lang.org/rustup/archive/${RUSTUP_INIT_VERSION}/x86_64-unknown-linux-gnu/rustup-init"
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t="$(mktemp -q -d)"
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wget -qO "$t/rustup-init" "$u"
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chmod +x "$t/rustup-init"
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"$t/rustup-init" \
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-y \
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--no-update-default-toolchain
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rm -rf "$t"
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EOF
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ENV PATH="$PATH:/home/vscode/.cargo/bin"
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# install rust.
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ARG RUST_VERSION
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RUN rustup default "$RUST_VERSION"
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# install cargo-binstall.
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# see https://github.com/cargo-bins/cargo-binstall.
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ARG CARGO_BINSTALL_VERSION
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RUN <<'EOF'
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#!/usr/bin/bash
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set -euxo pipefail
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u="https://github.com/cargo-bins/cargo-binstall/releases/download/v${CARGO_BINSTALL_VERSION}/cargo-binstall-x86_64-unknown-linux-gnu.tgz"
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t="$(mktemp -q -d)"
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wget -qO- "$u" | tar xzf - -C "$t"
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install "$t/cargo-binstall" ~/.cargo/bin
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rm -rf "$t"
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EOF
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# install espup.
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ARG ESPUP_VERSION
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RUN cargo binstall "espup@$ESPUP_VERSION"
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# install esp rust.
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ARG ESP_RUST_VERSION
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RUN <<'EOF'
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#!/usr/bin/bash
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set -euxo pipefail
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espup install \
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--toolchain-version "$ESP_RUST_VERSION" \
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--targets esp32
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echo 'source "$HOME/export-esp.sh"' >>~/.bashrc
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EOF
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# install espflash.
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ARG ESPFLASH_VERSION
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RUN cargo binstall "espflash@$ESPFLASH_VERSION"
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# install esp-generate.
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ARG ESP_GENERATE_VERSION
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RUN cargo binstall "esp-generate@$ESP_GENERATE_VERSION"
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USER root
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RUN <<'EOF'
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#!/usr/bin/bash
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set -euxo pipefail
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# ensure /etc/profile is called at the top of the file, when running in a
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# login shell.
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sed -i '0,/esac/s/esac/&\n\nsource \/etc\/profile/' /home/vscode/.bashrc
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EOF
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COPY .devcontainer/inputrc /etc/inputrc
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COPY .devcontainer/login.sh /etc/profile.d/login.sh

‎.devcontainer/devcontainer.json‎

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{
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"name": "esp32",
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"dockerFile": "Dockerfile",
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"context": "..",
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"runArgs": [
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"--group-add=dialout",
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"--device=/dev/ttyUSB0",
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"-v=${localEnv:HOME}/.ssh/id_rsa:/home/vscode/.ssh/id_rsa:ro",
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"-v=${localEnv:HOME}/.ssh/id_rsa.pub:/home/vscode/.ssh/id_rsa.pub:ro"
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],
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"postCreateCommand": "bash .devcontainer/setup.sh",
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"customizations": {
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"vscode": {
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"extensions": [
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"github.vscode-github-actions",
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"rust-lang.rust-analyzer",
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"streetsidesoftware.code-spell-checker",
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"tamasfe.even-better-toml"
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]
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}
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}
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}

‎.devcontainer/inputrc‎

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set input-meta on
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set output-meta on
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set show-all-if-ambiguous on
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set completion-ignore-case on
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"\e[A": history-search-backward
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"\e[B": history-search-forward
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"\eOD": backward-word
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"\eOC": forward-word

‎.devcontainer/login.sh‎

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# shellcheck shell=bash
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export EDITOR=code
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export PAGER=less
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alias l='ls -lF --color'
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alias ll='l -a'
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alias h='history 25'
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alias j='jobs -l'

‎.devcontainer/setup.sh‎

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#!/bin/bash
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set -euxo pipefail
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pushd /home/vscode
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sudo chown vscode:vscode .ssh && sudo chmod 700 .ssh
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popd

‎.dockerignore‎

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*
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!.devcontainer/*

‎.github/workflows/build.yml‎

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name: build
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on:
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push:
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pull_request:
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workflow_dispatch:
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env:
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CARGO_TERM_COLOR: always
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GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
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jobs:
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build:
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name: Build
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runs-on: ubuntu-24.04
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strategy:
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fail-fast: false
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matrix:
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action:
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- command: build
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args: --release
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- command: fmt
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args: --all -- --check
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- command: clippy
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args: --all-features --workspace -- -D warnings
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steps:
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- name: Checkout
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uses: actions/checkout@v5
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- name: Setup Rust
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uses: esp-rs/xtensa-toolchain@v1.6
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with:
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default: true
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buildtargets: esp32
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version: "1.90.0"
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ldproxy: false
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- name: Enable caching
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uses: Swatinem/rust-cache@v2
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- name: Run command
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run: cargo ${{ matrix.action.command }} ${{ matrix.action.args }}

‎.gitignore‎

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target/
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rust-esp32-hello-world/
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*.tmp

‎.vscode/settings.json‎

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{
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"cSpell.words": [
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"binstall",
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"espflash",
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"espup",
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"rustup"
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],
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"rust-analyzer.cargo.allTargets": false,
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"rust-analyzer.cargo.target": "xtensa-esp32-none-elf",
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"rust-analyzer.server.extraEnv": {
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"RUSTUP_TOOLCHAIN": "1.90.0"
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},
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"rust-analyzer.check.extraEnv": {
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"RUSTUP_TOOLCHAIN": "esp"
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},
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"rust-analyzer.cargo.extraEnv": {
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"RUSTUP_TOOLCHAIN": "esp"
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},
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}

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