Add Arm Cortex-M0+ interrupt facilities namespace (#38)

Resolves #33 (Add Arm Cortex-M0+ interrupt facilities namespace).

docs/index.md

@@ -8,3 +8,4 @@
 1. [Library Version](library_version.md)
 1. [Library Configuration](library_configuration.md)
 1. [Peripheral Facilities](peripheral.md)
+1. [Interrupt Facilities](interrupt.md)

docs/interrupt.md

@@ -0,0 +1,6 @@
+# Interrupt Facilities
+Arm Cortex-M0+ interrupt facilities are defined in the
+[`include/picolibrary/arm/cortex/m0plus/interrupt.h`](https://github.com/apcountryman/picolibrary-arm-cortex-m0plus/blob/main/include/picolibrary/arm/cortex/m0plus/interrupt.h)/[`source/picolibrary/arm/cortex/m0plus/interrupt.cc`](https://github.com/apcountryman/picolibrary-arm-cortex-m0plus/blob/main/source/picolibrary/arm/cortex/m0plus/interrupt.cc)
+header/source file pair.
+
+## Table of Contents

include/picolibrary/arm/cortex/m0plus/interrupt.h

@@ -0,0 +1,32 @@
+/**
+ * picolibrary-arm-cortex-m0plus
+ *
+ * Copyright 2023, Andrew Countryman <apcountryman@gmail.com> and the
+ * picolibrary-arm-cortex-m0plus contributors
+ *
+ * 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.
+ */
+
+/**
+ * \file
+ * \brief picolibrary::Arm::Cortex::M0PLUS::Interrupt interface.
+ */
+
+#ifndef PICOLIBRARY_ARM_CORTEX_M0PLUS_INTERRUPT_H
+#define PICOLIBRARY_ARM_CORTEX_M0PLUS_INTERRUPT_H
+
+/**
+ * \brief Arm Cortex-M0+ interrupt facilities.
+ */
+namespace picolibrary::Arm::Cortex::M0PLUS::Interrupt {
+} // namespace picolibrary::Arm::Cortex::M0PLUS::Interrupt
+
+#endif // PICOLIBRARY_ARM_CORTEX_M0PLUS_INTERRUPT_H

source/CMakeLists.txt

@@ -25,6 +25,7 @@ set(
     PICOLIBRARY_ARM_CORTEX_M0PLUS_SOURCE_FILES
     "picolibrary/arm/cortex/m0plus.cc"
     "picolibrary/arm/cortex/m0plus/configuration.cc"
+    "picolibrary/arm/cortex/m0plus/interrupt.cc"
     "picolibrary/arm/cortex/m0plus/peripheral.cc"
     "picolibrary/arm/cortex/m0plus/peripheral/mpu.cc"
     "picolibrary/arm/cortex/m0plus/peripheral/nvic.cc"

source/picolibrary/arm/cortex/m0plus/interrupt.cc

@@ -0,0 +1,23 @@
+/**
+ * picolibrary-arm-cortex-m0plus
+ *
+ * Copyright 2023, Andrew Countryman <apcountryman@gmail.com> and the
+ * picolibrary-arm-cortex-m0plus contributors
+ *
+ * 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.
+ */
+
+/**
+ * \file
+ * \brief picolibrary::Arm::Cortex::M0PLUS::Interrupt implementation.
+ */
+
+#include "picolibrary/arm/cortex/m0plus/interrupt.h"