diff --git a/portable/GCC/ARM_CRx_MPU/.clang-format b/portable/GCC/ARM_CRx_MPU/.clang-format
new file mode 100644
index 000000000..b10f7ad5c
--- /dev/null
+++ b/portable/GCC/ARM_CRx_MPU/.clang-format
@@ -0,0 +1,103 @@
+---
+Language: Cpp
+AlignAfterOpenBracket: BlockIndent
+AlignConsecutiveAssignments: None
+AlignConsecutiveBitFields: AcrossEmptyLinesAndComments
+AlignConsecutiveDeclarations: None
+AlignConsecutiveMacros: AcrossEmptyLinesAndComments
+AlignEscapedNewlines: Left
+AlignOperands: AlignAfterOperator
+AlignTrailingComments: true
+AllowAllArgumentsOnNextLine: false
+AllowAllParametersOfDeclarationOnNextLine: false
+AllowShortBlocksOnASingleLine: Never
+AllowShortCaseLabelsOnASingleLine: false
+AllowShortEnumsOnASingleLine: false
+AllowShortFunctionsOnASingleLine: None
+AllowShortIfStatementsOnASingleLine: false
+AllowShortLambdasOnASingleLine: All
+AllowShortLoopsOnASingleLine: false
+AlwaysBreakAfterReturnType: None
+AlwaysBreakBeforeMultilineStrings: false
+AlwaysBreakTemplateDeclarations: Yes
+BinPackArguments: false
+BinPackParameters: false
+BitFieldColonSpacing: Both
+BraceWrapping:
+  AfterCaseLabel: true
+  AfterClass: true
+  AfterControlStatement: Always
+  AfterEnum: true
+  AfterExternBlock: false
+  AfterFunction: true
+  AfterNamespace: true
+  AfterStruct: true
+  AfterUnion: true
+  BeforeCatch: true
+  BeforeElse: true
+  BeforeLambdaBody: false
+  BeforeWhile: false
+  IndentBraces: false
+  SplitEmptyFunction: true
+  SplitEmptyRecord: true
+  SplitEmptyNamespace: true
+BreakBeforeBinaryOperators: None
+BreakBeforeBraces: Custom
+BreakBeforeConceptDeclarations: true
+BreakBeforeTernaryOperators: true
+BreakConstructorInitializers: BeforeColon
+BreakInheritanceList: BeforeColon
+BreakStringLiterals: true
+ColumnLimit: 90
+CompactNamespaces: false
+ContinuationIndentWidth: 4
+Cpp11BracedListStyle: false
+DerivePointerAlignment: false
+EmptyLineBeforeAccessModifier: Always
+FixNamespaceComments: true
+IncludeBlocks: Preserve
+IndentCaseBlocks: false
+IndentCaseLabels: true
+IndentExternBlock: NoIndent
+IndentGotoLabels: true
+IndentPPDirectives: BeforeHash
+IndentWidth: 4
+KeepEmptyLinesAtTheStartOfBlocks: false
+MaxEmptyLinesToKeep: 1
+NamespaceIndentation: None
+PenaltyBreakAssignment: 1000
+PenaltyBreakBeforeFirstCallParameter: 200
+PenaltyBreakComment: 50
+PenaltyBreakFirstLessLess: 120
+PenaltyBreakString: 100
+PenaltyBreakTemplateDeclaration: 10
+PenaltyExcessCharacter: 100
+PenaltyIndentedWhitespace: 0
+PenaltyReturnTypeOnItsOwnLine: 10000
+PointerAlignment: Middle
+ReflowComments: true
+SortIncludes: false
+SortUsingDeclarations: true
+SpaceAfterCStyleCast: true
+SpaceAfterLogicalNot: false
+SpaceAfterTemplateKeyword: false
+SpaceBeforeCpp11BracedList: true
+SpaceBeforeCtorInitializerColon: false
+SpaceBeforeInheritanceColon: false
+SpaceBeforeParens: Never
+SpaceBeforeRangeBasedForLoopColon: false
+SpaceBeforeSquareBrackets: false
+SpaceInEmptyBlock: false
+SpaceInEmptyParentheses: false
+SpacesBeforeTrailingComments: 1
+SpacesInAngles: false
+SpacesInConditionalStatement: true
+SpacesInContainerLiterals: true
+SpacesInCStyleCastParentheses: true
+SpacesInParentheses: true
+SpacesInSquareBrackets: true
+TabWidth: 4
+LineEnding: LF
+UseTab: Never
+...
+