Fix compile errors

.codespellrc

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+# See: https://github.com/codespell-project/codespell#using-a-config-file
+[codespell]
+# In the event of a false positive, add the problematic word, in all lowercase, to a comma-separated list here:
+ignore-words-list = hart,pullrequest
+builtin = clear
+check-filenames =
+check-hidden =
+skip = ./.git,./firmwares/arduinoISP,./firmwares/wifishield,./bootloaders

.github/dependabot.yml

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+# See: https://docs.github.com/en/github/administering-a-repository/configuration-options-for-dependency-updates#about-the-dependabotyml-file
+version: 2
+
+updates:
+  # Configure check for outdated GitHub Actions actions in workflows.
+  # See: https://docs.github.com/en/github/administering-a-repository/keeping-your-actions-up-to-date-with-dependabot
+  - package-ecosystem: github-actions
+    directory: / # Check the repository's workflows under /.github/workflows/
+    schedule:
+      interval: daily

.github/workflows/check-arduino.yml

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+name: Check Arduino
+
+# See: https://docs.github.com/en/free-pro-team@latest/actions/reference/events-that-trigger-workflows
+on:
+  push:
+  pull_request:
+  schedule:
+    # Run every Tuesday at 8 AM UTC to catch breakage caused by new rules added to Arduino Lint.
+    - cron: "0 8 * * TUE"
+  workflow_dispatch:
+  repository_dispatch:
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
+      - name: Arduino Lint
+        uses: arduino/arduino-lint-action@v1
+        with:
+          compliance: specification
+          # Always use this setting for official repositories. Remove for 3rd party projects.
+          official: true
+          project-type: platform

.github/workflows/compile-platform-examples.yml

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+name: Compile Examples
+
+# See: https://docs.github.com/en/actions/reference/events-that-trigger-workflows
+on:
+  push:
+    paths:
+      - ".github/workflows/compile-platform-examples.ya?ml"
+      - "cores/**"
+      - "libraries/**"
+      - "variants/**"
+      - "boards.txt"
+      - "platform.txt"
+  pull_request:
+    paths:
+      - ".github/workflows/compile-platform-examples.ya?ml"
+      - "cores/**"
+      - "libraries/**"
+      - "variants/**"
+      - "boards.txt"
+      - "platform.txt"
+  workflow_dispatch:
+  repository_dispatch:
+
+jobs:
+  build:
+    name: ${{ matrix.board.fqbn }}
+    runs-on: ubuntu-latest
+
+    env:
+      SKETCHES_REPORTS_PATH: sketches-reports
+
+    strategy:
+      fail-fast: false
+
+      matrix:
+        board:
+          - fqbn: arduino:avr:yun
+            serial: true
+            softwareserial: true
+          - fqbn: arduino:avr:uno
+            serial: true
+            softwareserial: true
+          - fqbn: arduino:avr:diecimila:cpu=atmega328
+            serial: true
+            softwareserial: true
+          - fqbn: arduino:avr:diecimila:cpu=atmega168
+            serial: true
+            softwareserial: true
+          - fqbn: arduino:avr:nano:cpu=atmega328
+            serial: true
+            softwareserial: true
+          - fqbn: arduino:avr:nano:cpu=atmega328old
+            serial: true
+            softwareserial: true
+          - fqbn: arduino:avr:nano:cpu=atmega168
+            serial: true
+            softwareserial: true
+          - fqbn: arduino:avr:mega:cpu=atmega2560
+            serial: true
+            softwareserial: true
+          - fqbn: arduino:avr:mega:cpu=atmega1280
+            serial: true
+            softwareserial: true
+          - fqbn: arduino:avr:megaADK
+            serial: true
+            softwareserial: true
+          - fqbn: arduino:avr:leonardo
+            serial: true
+            softwareserial: true
+          - fqbn: arduino:avr:leonardoeth
+            serial: true
+            softwareserial: true
+          - fqbn: arduino:avr:micro
+            serial: true
+            softwareserial: true
+          - fqbn: arduino:avr:esplora
+            serial: true
+            softwareserial: true
+          - fqbn: arduino:avr:mini:cpu=atmega328
+            serial: true
+            softwareserial: true
+          - fqbn: arduino:avr:mini:cpu=atmega168
+            serial: true
+            softwareserial: true
+          - fqbn: arduino:avr:ethernet
+            serial: true
+            softwareserial: true
+          - fqbn: arduino:avr:fio
+            serial: true
+            softwareserial: true
+          - fqbn: arduino:avr:bt:cpu=atmega328
+            serial: true
+            softwareserial: true
+          - fqbn: arduino:avr:bt:cpu=atmega168
+            serial: true
+            softwareserial: true
+          - fqbn: arduino:avr:LilyPadUSB
+            serial: true
+            softwareserial: true
+          - fqbn: arduino:avr:lilypad:cpu=atmega328
+            serial: true
+            softwareserial: true
+          - fqbn: arduino:avr:lilypad:cpu=atmega168
+            serial: true
+            softwareserial: true
+          - fqbn: arduino:avr:pro:cpu=16MHzatmega328
+            serial: true
+            softwareserial: true
+          - fqbn: arduino:avr:pro:cpu=8MHzatmega328
+            serial: true
+            softwareserial: true
+          - fqbn: arduino:avr:pro:cpu=16MHzatmega168
+            serial: true
+            softwareserial: true
+          - fqbn: arduino:avr:pro:cpu=8MHzatmega168
+            serial: true
+            softwareserial: true
+          - fqbn: arduino:avr:atmegang:cpu=atmega168
+            serial: true
+            softwareserial: true
+          - fqbn: arduino:avr:atmegang:cpu=atmega8
+            serial: true
+            softwareserial: false
+          - fqbn: arduino:avr:robotControl
+            serial: true
+            softwareserial: false
+          - fqbn: arduino:avr:robotMotor
+            serial: true
+            softwareserial: false
+          - fqbn: arduino:avr:gemma
+            serial: false
+            softwareserial: false
+          - fqbn: arduino:avr:circuitplay32u4cat
+            serial: true
+            softwareserial: true
+          - fqbn: arduino:avr:yunmini
+            serial: true
+            softwareserial: true
+          - fqbn: arduino:avr:chiwawa
+            serial: true
+            softwareserial: true
+          - fqbn: arduino:avr:one
+            serial: true
+            softwareserial: true
+          - fqbn: arduino:avr:unowifi
+            serial: true
+            softwareserial: true
+          - fqbn: arduino:avr:unomini
+            serial: true
+            softwareserial: true
+
+        # Make board type-specific customizations to the matrix jobs
+        include:
+          - board:
+              # Boards with Serial interface
+              serial: true
+            # Compile these sketches in addition to the ones compiled for all boards
+            serial-sketch-paths: |
+              - libraries/EEPROM/examples/eeprom_crc
+              - libraries/EEPROM/examples/eeprom_get
+              - libraries/EEPROM/examples/eeprom_put
+              - libraries/EEPROM/examples/eeprom_read
+              - libraries/SPI
+              - libraries/Wire
+          - board:
+              serial: false
+            serial-sketch-paths: ""
+          - board:
+              # Boards compatible with the SoftwareSerial library
+              softwareserial: true
+            softwareserial-sketch-paths: |
+              - libraries/SoftwareSerial
+          - board:
+              softwareserial: false
+            softwareserial-sketch-paths: ""
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
+      - name: Compile examples
+        uses: arduino/compile-sketches@v1
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          fqbn: ${{ matrix.board.fqbn }}
+          platforms: |
+            # Use Boards Manager to install the latest release of the platform to get the toolchain.
+            - name: arduino:avr
+            # Overwrite the Boards Manager installation with the platform from the repository.
+            - source-path: ./
+              name: arduino:avr
+          sketch-paths: |
+            # Compile these sketches for all boards
+            - libraries/EEPROM/examples/eeprom_clear
+            - libraries/EEPROM/examples/eeprom_iteration
+            - libraries/EEPROM/examples/eeprom_update
+            - libraries/EEPROM/examples/eeprom_write
+            # Board-specific sketches
+            ${{ matrix.serial-sketch-paths }}
+            ${{ matrix.softwareserial-sketch-paths }}
+          enable-deltas-report: true
+          sketches-report-path: ${{ env.SKETCHES_REPORTS_PATH }}
+
+      - name: Save sketches report as workflow artifact
+        uses: actions/upload-artifact@v3
+        with:
+          if-no-files-found: error
+          path: ${{ env.SKETCHES_REPORTS_PATH }}
+          name: ${{ env.SKETCHES_REPORTS_PATH }}

.github/workflows/report-size-deltas.yml

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+name: Report Size Deltas
+
+# See: https://docs.github.com/en/free-pro-team@latest/actions/reference/events-that-trigger-workflows
+on:
+  push:
+    paths:
+      - ".github/workflows/report-size-deltas.yml"
+  schedule:
+    # Run at the minimum interval allowed by GitHub Actions.
+    # Note: GitHub Actions periodically has outages which result in workflow failures.
+    # In this event, the workflows will start passing again once the service recovers.
+    - cron: "*/5 * * * *"
+  workflow_dispatch:
+  repository_dispatch:
+
+jobs:
+  report:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Comment size deltas reports to PRs
+        uses: arduino/report-size-deltas@v1
+        with:
+          # The name of the workflow artifact created by the sketch compilation workflow
+          sketches-reports-source: sketches-reports

.github/workflows/spell-check.yml

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+name: Spell Check
+
+# See: https://docs.github.com/en/free-pro-team@latest/actions/reference/events-that-trigger-workflows
+on:
+  push:
+  pull_request:
+  schedule:
+    # Run every Tuesday at 8 AM UTC to catch new misspelling detections resulting from dictionary updates.
+    - cron: "0 8 * * TUE"
+  workflow_dispatch:
+  repository_dispatch:
+
+jobs:
+  spellcheck:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
+      - name: Spell check
+        uses: codespell-project/actions-codespell@master

README.md

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+# Arduino AVR Boards
+
+[![Check Arduino status](https://github.com/arduino/ArduinoCore-avr/actions/workflows/check-arduino.yml/badge.svg)](https://github.com/arduino/ArduinoCore-avr/actions/workflows/check-arduino.yml)
+[![Compile Examples status](https://github.com/arduino/ArduinoCore-avr/actions/workflows/compile-platform-examples.yml/badge.svg)](https://github.com/arduino/ArduinoCore-avr/actions/workflows/compile-platform-examples.yml)
+[![Spell Check status](https://github.com/arduino/ArduinoCore-avr/actions/workflows/spell-check.yml/badge.svg)](https://github.com/arduino/ArduinoCore-avr/actions/workflows/spell-check.yml)
+
+This repository contains the source code and configuration files of the Arduino AVR Boards
+[platform](https://arduino.github.io/arduino-cli/latest/platform-specification/).