ci: add codespell action

Signed-off-by: Frederic Pillon <frederic.pillon@st.com>

Author: fpistm

.github/workflows/CodeSpell.yml

@@ -0,0 +1,27 @@
+name: codespell
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+  # Allows you to run this workflow manually from the Actions tab
+  workflow_dispatch:
+jobs:
+  codespell:
+    name: Check for spelling errors
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      # See: https://github.com/codespell-project/actions-codespell/blob/master/README.md
+      - name: Spell check
+        uses: codespell-project/actions-codespell@master
+        with:
+          check_filenames: true
+          check_hidden: true
+          # In the event of a false positive, add the word in all lower case to this file:
+          ignore_words_file: ./CI/codespell/.codespellignore
+          skip: ./.git,./CI,./system/Drivers,./system/Middlewares

CI/codespell/.codespellignore

@@ -0,0 +1,8 @@
+busses
+dout
+exten
+hart
+hsi
+noe
+nwe
+

CI/codespell/.codespellrc

@@ -0,0 +1,5 @@
+[codespell]
+check-filenames =
+check-hidden =
+skip = ./.git,./CI,./system/Drivers,./system/Middlewares
+ignore-words = ./CI/codespell/.codespellignore

CI/codespell/codespell.md

@@ -0,0 +1,21 @@
+## [codespell]
+
+[codespell] is used to check common misspellings and fix them.
+
+To execute it within this repository, it has to be installed first, see [installation](https://github.com/codespell-project/codespell#installation).
+Then run from the root folder this command using the configuration file:
+
+* Linux or equivalent:
+
+```console
+codespell --config ./CI/codespell/.codespellrc
+```
+
+* Windows
+
+```console
+codespell.exe --config .\CI\codespell\.codespellrc
+```
+
+
+[codespell]: https://github.com/codespell-project/codespell

README.md

@@ -2,7 +2,7 @@
 [![forums](https://img.shields.io/badge/join-the%20forums-blue.svg)](https://www.stm32duino.com/)
 [![wiki](https://img.shields.io/badge/browse-the%20wiki-orange.svg)](https://github.com/stm32duino/wiki/wiki)
 [![STM32 Core Continuous Integration](https://github.com/stm32duino/Arduino_Core_STM32/workflows/STM32%20Core%20Continuous%20Integration/badge.svg?branch=main)](https://github.com/stm32duino/Arduino_Core_STM32/actions)
-
+[![codespell](https://github.com/stm32duino/Arduino_Core_STM32/workflows/codespell/badge.svg)](https://github.com/stm32duino/Arduino_Core_STM32/actions?workflow=codespell)
 
 
 [![GitHub release](https://img.shields.io/github/release/stm32duino/Arduino_Core_STM32.svg)](https://github.com/stm32duino/Arduino_Core_STM32/releases/latest)