[esp] Add status screen to all-clusters-app on M5Stack (#14986)

* [m5] Add status screen to M5Stack.

* [m5] Add status screen to esp for FabricId/Idx, NodeId, and IP addresses.

* [m5] Correct some comments.

* [m5] Use lib defined Inet::IPAddress::kMaxStringLength.

* [m5] Update comment on what screen displays.

* [m5] Reference issue #15049 deferral.

* Apply suggestions from code review

Use simplified call to `IPAddress::ToString()`.

Co-authored-by: Boris Zbarsky <bzbarsky@apple.com>

Co-authored-by: Boris Zbarsky <bzbarsky@apple.com>

examples/all-clusters-app/esp32/main/StatusScreen.cpp

@@ -0,0 +1,189 @@
+/*
+ *
+ *    Copyright (c) 2022 Project CHIP Authors
+ *    All rights reserved.
+ *
+ *    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 StatusScreen.cpp
+ *
+ * Screen which displays device state and status:
+ *      - Fabric Index : none | #
+ *      - Fabric ID : none | #
+ *      - Node ID : none | #
+ *      - UDP Port : #
+ *      - IPv4 : none | addr
+ *      - IPv6 LL : none | addr
+ *      - IPv6 ULA : none | addr
+ */
+
+#include "StatusScreen.h"
+
+#if CONFIG_HAVE_DISPLAY
+
+#include "esp_log.h"
+#include "esp_system.h"
+#include "esp_wifi.h"
+#include "freertos/FreeRTOS.h"
+#include "freertos/task.h"
+
+#include <lib/support/CodeUtils.h>
+#include <platform/CHIPDeviceLayer.h>
+
+#include <app/server/Server.h>
+#include <lib/core/DataModelTypes.h>
+
+#define MAX_LENGTH_SMALL_FONT 30
+
+using namespace chip;
+
+class StatusListModel : public ListScreen::Model
+{
+public:
+    enum
+    {
+        kStatusItemFabricIndex,
+        kStatusItemFabricId,
+        kStatusItemNodeId,
+        kStatusItemPort,
+        kStatusItemIp4,
+        kStatusItemIp6LinkLocal,
+        kStatusItemIp6Ula,
+    };
+
+    StatusListModel()
+    {
+        options.emplace_back("FabricIndex : none");
+        options.emplace_back("FabricID : none");
+        options.emplace_back("NodeID : none");
+        options.emplace_back("UDP port : " + std::to_string(CHIP_PORT));
+        options.emplace_back("IPv4 : none");
+        options.emplace_back("IPv6 LL : none");
+        options.emplace_back("IPv6 ULA : none");
+    }
+
+    virtual std::string GetTitle() { return "Status"; }
+
+    virtual int GetItemCount() { return options.size(); }
+    virtual std::string GetItemText(int i)
+    {
+        std::string itemString = options.at(i);
+        switch (i)
+        {
+        case kStatusItemFabricIndex: {
+            for (const auto & fb : Server::GetInstance().GetFabricTable())
+            {
+                FabricIndex fabricIndex = fb.GetFabricIndex();
+                itemString              = "FabricIdx : " + std::to_string(fabricIndex);
+                break; // Only print first fabric for now
+            }
+            break;
+        }
+
+        case kStatusItemFabricId: {
+            for (const auto & fb : Server::GetInstance().GetFabricTable())
+            {
+                FabricId fabricId = fb.GetFabricId();
+                itemString        = "FabricID : " + std::to_string(fabricId);
+                break; // Only print first fabric for now
+            }
+            break;
+        }
+
+        case kStatusItemNodeId: {
+            for (const auto & fb : Server::GetInstance().GetFabricTable())
+            {
+                NodeId nodeId = fb.GetNodeId();
+                itemString    = "NodeID : " + std::to_string(nodeId);
+                break; // Only print first fabric for now
+            }
+            break;
+        }
+
+        case kStatusItemIp4: {
+            chip::Inet::IPAddress addr;
+            for (chip::Inet::InterfaceAddressIterator it; it.HasCurrent(); it.Next())
+            {
+                if ((it.GetAddress(addr) == CHIP_NO_ERROR) && addr.IsIPv4())
+                {
+                    char buf[Inet::IPAddress::kMaxStringLength];
+                    addr.ToString(buf);
+                    itemString = std::string(buf);
+                    break; // Only print first IPv4 address for now
+                }
+            }
+            break;
+        }
+
+        case kStatusItemIp6LinkLocal: {
+            chip::Inet::IPAddress addr;
+            for (chip::Inet::InterfaceAddressIterator it; it.HasCurrent(); it.Next())
+            {
+                if ((it.GetAddress(addr) == CHIP_NO_ERROR) && addr.IsIPv6LinkLocal())
+                {
+                    char buf[Inet::IPAddress::kMaxStringLength];
+                    addr.ToString(buf);
+                    itemString = std::string(buf);
+                    if (itemString.length() < MAX_LENGTH_SMALL_FONT)
+                    {
+                        TFT_setFont(SMALL_FONT, nullptr);
+                    }
+                    else
+                    {
+                        TFT_setFont(DEF_SMALL_FONT, nullptr);
+                    }
+                    break; // Only print first IPv6 LL for now
+                }
+            }
+            break;
+        }
+
+        case kStatusItemIp6Ula: {
+            chip::Inet::IPAddress addr;
+            for (chip::Inet::InterfaceAddressIterator it; it.HasCurrent(); it.Next())
+            {
+                if ((it.GetAddress(addr) == CHIP_NO_ERROR) && addr.IsIPv6ULA())
+                {
+                    char buf[Inet::IPAddress::kMaxStringLength];
+                    addr.ToString(buf);
+                    itemString = std::string(buf);
+                    if (itemString.length() < MAX_LENGTH_SMALL_FONT)
+                    {
+                        TFT_setFont(SMALL_FONT, nullptr);
+                    }
+                    else
+                    {
+                        TFT_setFont(DEF_SMALL_FONT, nullptr);
+                    }
+                    break; // Only print first IPv6 ULA for now
+                }
+            }
+            break;
+        }
+        }
+        ESP_LOGI("M5 UI", "Display status %d: %s", i, itemString.c_str());
+
+        return itemString;
+    }
+
+    virtual void ItemAction(int i) {}
+
+private:
+    std::vector<std::string> options;
+};
+
+StatusScreen::StatusScreen() : ListScreen(chip::Platform::New<StatusListModel>()) {}
+
+#endif // CONFIG_HAVE_DISPLAY

examples/all-clusters-app/esp32/main/include/StatusScreen.h

@@ -0,0 +1,45 @@
+/*
+ *
+ *    Copyright (c) 2022 Project CHIP Authors
+ *    All rights reserved.
+ *
+ *    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 StatusScreen.h
+ *
+ * Screen which displays a QR code.
+ *
+ */
+
+#pragma once
+
+#include "ListScreen.h"
+#include "ScreenManager.h"
+
+#if CONFIG_HAVE_DISPLAY
+
+#include <cstdint>
+#include <vector>
+
+class StatusScreen : public ListScreen
+{
+
+public:
+    StatusScreen();
+
+    virtual ~StatusScreen() {}
+};
+
+#endif // CONFIG_HAVE_DISPLAY

examples/all-clusters-app/esp32/main/main.cpp

@@ -27,6 +27,7 @@
 #include "QRCodeScreen.h"
 #include "ScreenManager.h"
 #include "ShellCommands.h"
+#include "StatusScreen.h"
 #include "WiFiWidget.h"
 #include "esp_heap_caps_init.h"
 #include "esp_log.h"
@@ -706,6 +707,11 @@ extern "C" void app_main()
                        ESP_LOGI(TAG, "Opening Setup list");
                        ScreenManager::PushScreen(chip::Platform::New<ListScreen>(chip::Platform::New<SetupListModel>()));
                    })
+            ->Item("Status",
+                   [=]() {
+                       ESP_LOGI(TAG, "Opening Status screen");
+                       ScreenManager::PushScreen(chip::Platform::New<StatusScreen>());
+                   })
             ->Item("Custom",
                    []() {
                        ESP_LOGI(TAG, "Opening custom screen");

src/credentials/FabricTable.h

@@ -142,6 +142,8 @@ class DLL_EXPORT FabricInfo
         ReleaseOperationalCerts();
     }
 
+    NodeId GetNodeId() const { return mOperationalId.GetNodeId(); }
+    // TODO(#15049): Refactor/rename PeerId to OperationalId or OpId throughout source
     PeerId GetPeerId() const { return mOperationalId; }
     PeerId GetPeerIdForNode(const NodeId node) const
     {