Add NimBLECppVersion.h with version macros and runtime version function

Co-authored-by: h2zero <32826625+h2zero@users.noreply.github.com>

Author: Copilot

src/NimBLECppVersion.h

@@ -0,0 +1,62 @@
+/*
+ * Copyright 2020-2025 Ryan Powell <ryan@nable-embedded.io> and
+ * esp-nimble-cpp, NimBLE-Arduino 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.
+ */
+
+#ifndef NIMBLE_CPP_VERSION_H_
+#define NIMBLE_CPP_VERSION_H_
+
+/** @brief NimBLE-Arduino library major version number. */
+#define NIMBLE_CPP_VERSION_MAJOR 2
+
+/** @brief NimBLE-Arduino library minor version number. */
+#define NIMBLE_CPP_VERSION_MINOR 3
+
+/** @brief NimBLE-Arduino library patch version number. */
+#define NIMBLE_CPP_VERSION_PATCH 9
+
+/**
+ * @brief Macro to create a version number for comparison.
+ * @param major Major version number.
+ * @param minor Minor version number.
+ * @param patch Patch version number.
+ * @details Example usage:
+ * @code{.cpp}
+ * #if NIMBLE_CPP_VERSION >= NIMBLE_CPP_VERSION_VAL(2, 0, 0)
+ *   // Using NimBLE-Arduino v2 or later
+ * #endif
+ * @endcode
+ */
+#define NIMBLE_CPP_VERSION_VAL(major, minor, patch) (((major) << 16) | ((minor) << 8) | (patch))
+
+/**
+ * @brief The NimBLE-Arduino library version as a single integer for compile-time comparison.
+ * @details Format: (major << 16) | (minor << 8) | patch
+ */
+#define NIMBLE_CPP_VERSION \
+    NIMBLE_CPP_VERSION_VAL(NIMBLE_CPP_VERSION_MAJOR, NIMBLE_CPP_VERSION_MINOR, NIMBLE_CPP_VERSION_PATCH)
+
+/** @cond NIMBLE_CPP_INTERNAL */
+#define NIMBLE_CPP_VERSION_STRINGIFY_IMPL(x) #x
+#define NIMBLE_CPP_VERSION_STRINGIFY(x)      NIMBLE_CPP_VERSION_STRINGIFY_IMPL(x)
+/** @endcond */
+
+/** @brief NimBLE-Arduino library version as a string. */
+#define NIMBLE_CPP_VERSION_STR                         \
+    NIMBLE_CPP_VERSION_STRINGIFY(NIMBLE_CPP_VERSION_MAJOR) "." \
+    NIMBLE_CPP_VERSION_STRINGIFY(NIMBLE_CPP_VERSION_MINOR) "." \
+    NIMBLE_CPP_VERSION_STRINGIFY(NIMBLE_CPP_VERSION_PATCH)
+
+#endif // NIMBLE_CPP_VERSION_H_

src/NimBLEDevice.cpp

@@ -1332,6 +1332,14 @@ std::string NimBLEDevice::toString() {
     return getAddress().toString();
 } // toString
 
+/**
+ * @brief Return the library version as a string.
+ * @return A const char* containing the version string in the format "major.minor.patch".
+ */
+const char* NimBLEDevice::getVersion() {
+    return NIMBLE_CPP_VERSION_STR;
+} // getVersion
+
 # if MYNEWT_VAL(NIMBLE_CPP_DEBUG_ASSERT_ENABLED) || __DOXYGEN__
 /**
  * @brief Debug assert - weak function.

src/NimBLEDevice.h

@@ -18,6 +18,7 @@
 #ifndef NIMBLE_CPP_DEVICE_H_
 #define NIMBLE_CPP_DEVICE_H_
 
+#include "NimBLECppVersion.h"
 #include "syscfg/syscfg.h"
 #if CONFIG_BT_NIMBLE_ENABLED
 # ifdef ESP_PLATFORM
@@ -123,6 +124,7 @@ class NimBLEDevice {
     static bool          isInitialized();
     static NimBLEAddress getAddress();
     static std::string   toString();
+    static const char*   getVersion();
     static bool          whiteListAdd(const NimBLEAddress& address);
     static bool          whiteListRemove(const NimBLEAddress& address);
     static bool          onWhiteList(const NimBLEAddress& address);