[nrfconnect] Moved NFC mgr impl from Zephyr to nrfconnect (project-chip#37629)

The NFCOnboardingPayloadManagerImpl that is currently located
in Zephyr is actually nrfconnect specific implementation,
as it includes nrf internal headers that are not available
for any other platform. It seems it was accidentally added
to Zephyr in the past, so it should be moved to nrfconnect.

Author: kkasperczyk-no

src/platform/Zephyr/BUILD.gn

@@ -76,13 +76,6 @@ static_library("Zephyr") {
     }
   }
 
-  if (chip_enable_nfc_onboarding_payload) {
-    sources += [
-      "NFCOnboardingPayloadManagerImpl.cpp",
-      "NFCOnboardingPayloadManagerImpl.h",
-    ]
-  }
-
   if (chip_malloc_sys_heap) {
     sources += [ "SysHeapMalloc.cpp" ]
   }

src/platform/Zephyr/NFCOnboardingPayloadManagerImpl.h

@@ -120,7 +120,7 @@ static_library("nrfconnect") {
 
   if (chip_enable_nfc_onboarding_payload) {
     sources += [
-      "../Zephyr/NFCOnboardingPayloadManagerImpl.cpp",
+      "NFCOnboardingPayloadManagerImpl.cpp",
       "NFCOnboardingPayloadManagerImpl.h",
     ]
   }

src/platform/nrfconnect/BUILD.gn

@@ -1,6 +1,6 @@
 /*
  *
- *    Copyright (c) 2021 Project CHIP Authors
+ *    Copyright (c) 2021-2025 Project CHIP Authors
  *
  *    Licensed under the Apache License, Version 2.0 (the "License");
  *    you may not use this file except in compliance with the License.

src/platform/Zephyr/NFCOnboardingPayloadManagerImpl.cpp src/platform/nrfconnect/NFCOnboardingPayloadManagerImpl.cpp

@@ -1,6 +1,6 @@
 /*
  *
- *    Copyright (c) 2021 Project CHIP Authors
+ *    Copyright (c) 2021-2025 Project CHIP Authors
  *
  *    Licensed under the Apache License, Version 2.0 (the "License");
  *    you may not use this file except in compliance with the License.
@@ -17,10 +17,53 @@
 
 /**
  *    @file
- *      Provides an implementation of the NFCOnboardingPayloadManager interface for nRF Connect
- *      SDK platform, by including Zephyr platform implementation.
+ *      Platform-specific NFCOnboardingPayloadManager implementation for nrfconnect.
  */
 
 #pragma once
 
-#include <platform/Zephyr/NFCOnboardingPayloadManagerImpl.h>
+#include <cstddef>
+#include <cstdint>
+
+namespace chip {
+namespace DeviceLayer {
+
+class NFCOnboardingPayloadManagerImpl final : public NFCOnboardingPayloadManager
+{
+    friend class NFCOnboardingPayloadManager;
+
+private:
+    // ===== Members that implement the NFCOnboardingPayloadManager internal interface.
+
+    CHIP_ERROR _Init();
+    CHIP_ERROR _StartTagEmulation(const char * payload, size_t payloadLength);
+    CHIP_ERROR _StopTagEmulation();
+    bool _IsTagEmulationStarted() const { return mIsStarted; };
+
+    // ===== Members for internal use by this class.
+
+    constexpr static uint8_t kNdefBufferSize = 128;
+
+    uint8_t mNdefBuffer[kNdefBufferSize];
+    bool mIsStarted;
+
+    // ===== Members for internal use by the following friends.
+
+    friend NFCOnboardingPayloadManager & NFCOnboardingPayloadMgr();
+    friend NFCOnboardingPayloadManagerImpl & NFCOnboardingPayloadMgrImpl();
+
+    static NFCOnboardingPayloadManagerImpl sInstance;
+};
+
+inline NFCOnboardingPayloadManager & NFCOnboardingPayloadMgr()
+{
+    return NFCOnboardingPayloadManagerImpl::sInstance;
+}
+
+inline NFCOnboardingPayloadManagerImpl & NFCOnboardingPayloadMgrImpl()
+{
+    return NFCOnboardingPayloadManagerImpl::sInstance;
+}
+
+} // namespace DeviceLayer
+} // namespace chip