Adding support for fish shell (CON-1840)

examples/stateful_light_switch/CMakeLists.txt

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+# The following lines of boilerplate have to be in your project's
+# CMakeLists in this exact order for cmake to work correctly
+cmake_minimum_required(VERSION 3.16)
+
+if(NOT DEFINED ENV{ESP_MATTER_PATH})
+    message(FATAL_ERROR "Please set ESP_MATTER_PATH to the path of esp-matter repo")
+endif(NOT DEFINED ENV{ESP_MATTER_PATH})
+
+set(PROJECT_VER "1.0")
+set(PROJECT_VER_NUMBER 1)
+
+set(ESP_MATTER_PATH $ENV{ESP_MATTER_PATH})
+set(MATTER_SDK_PATH ${ESP_MATTER_PATH}/connectedhomeip/connectedhomeip)
+
+# This should be done before using the IDF_TARGET variable.
+include($ENV{IDF_PATH}/tools/cmake/project.cmake)
+include(${ESP_MATTER_PATH}/examples/common/cmake_common/components_include.cmake)
+
+set(EXTRA_COMPONENT_DIRS
+    "${ESP_MATTER_PATH}/examples/common"
+    "${MATTER_SDK_PATH}/config/esp32/components"
+    "${ESP_MATTER_PATH}/components"
+    ${extra_components_dirs_append})
+
+project(stateful_light_switch)
+if(CONFIG_IDF_TARGET_ESP32C2)
+    include(relinker)
+endif()
+
+idf_build_set_property(CXX_COMPILE_OPTIONS "-std=gnu++17;-Os;-DCHIP_HAVE_CONFIG_H;-Wno-overloaded-virtual" APPEND)
+idf_build_set_property(C_COMPILE_OPTIONS "-Os" APPEND)
+# For RISCV chips, project_include.cmake sets -Wno-format, but does not clear various
+# flags that depend on -Wformat
+idf_build_set_property(COMPILE_OPTIONS "-Wno-format-nonliteral;-Wno-format-security" APPEND)

examples/stateful_light_switch/README.md

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+# Stateful Light Switch
+
+A composite Matter device that combines:
+- **Dimmable Light (0x0101)**: Server clusters for On/Off and Level Control, controls local WS2812 LED
+- **Dimmer Switch (0x0104)**: Client clusters for sending commands to bound devices
+
+Both device types are on a single endpoint, allowing the device to act as both a controllable light and a switch controller.
+
+## Hardware Requirements
+
+- ESP32-C6 development board
+- WS2812 RGB LED on **GPIO 8** (used as white light only)
+- Button on **GPIO 9**
+
+## Device Functionality
+
+### Matter Clusters
+
+| Cluster | Role | Purpose |
+|---------|------|---------|
+| On/Off | Server | Receives on/off commands, controls local LED |
+| On/Off | Client | Sends on/off commands to bound devices |
+| LevelControl | Server | Receives brightness commands, controls LED brightness |
+| LevelControl | Client | Sends brightness commands to bound devices |
+| Binding | Server | Stores bindings to remote devices |
+
+### Button Operations
+
+| Press Pattern | Action | Description |
+|--------------|--------|-------------|
+| **Single Short Press** | Toggle | Toggles local LED on/off and sends Toggle command to bound devices |
+| **Hold** | Dim Up | Increases brightness gradually. Sends Move command to bound devices at start, Stop on release |
+| **Short Press + Hold** | Dim Down | Decreases brightness gradually. Press briefly, then hold within 1.5s to dim down |
+
+### LED Behavior
+
+- LED brightness follows the LevelControl CurrentLevel attribute (0-254)
+- LED turns off completely when On/Off attribute is OFF
+- LED can be controlled locally or remotely from a Matter controller (e.g., Home Assistant)
+
+## Building and Flashing
+
+```bash
+cd examples/stateful_light_switch
+idf.py set-target esp32c6
+idf.py build flash monitor
+```
+
+## Post Commissioning Setup
+
+### Bind a Light to the Switch
+
+After commissioning both devices, update the light's ACL and the switch's binding:
+
+1. Update light's ACL to allow switch access:
+```
+chip-tool accesscontrol write acl '[{"privilege": 5, "authMode": 2, "subjects": [112233, <switch_node_id>], "targets": null}]' <light_node_id> 0
+```
+
+2. Add binding on switch to control the light:
+```
+chip-tool binding write binding '[{"node": <light_node_id>, "endpoint": 1, "cluster": 6}, {"node": <light_node_id>, "endpoint": 1, "cluster": 8}]' <switch_node_id> 1
+```
+
+Note: Cluster 6 = On/Off, Cluster 8 = Level Control
+
+## Console Commands
+
+If console is enabled (`CONFIG_ENABLE_CHIP_SHELL=y`):
+
+### Send commands to bound devices
+```
+matter esp bound invoke <local_endpoint_id> <cluster_id> <command_id> [parameters]
+```
+
+Examples:
+- Toggle: `matter esp bound invoke 0x1 0x6 0x2`
+- On: `matter esp bound invoke 0x1 0x6 0x1`
+- Off: `matter esp bound invoke 0x1 0x6 0x0`
+
+## Troubleshooting
+
+### "failed to notify the bound cluster changed"
+This error appears when no devices are bound to the switch. It is expected behavior and will disappear once you configure bindings.
+
+### Brightness changes from controller don't work
+Ensure the device is commissioned and the controller has proper ACL access. The device processes attribute updates in the PRE_UPDATE callback.

examples/stateful_light_switch/main/CMakeLists.txt

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+set(SRC_DIRS_LIST "." "${ESP_MATTER_PATH}/examples/common/app_reset")
+
+if (CONFIG_DYNAMIC_PASSCODE_COMMISSIONABLE_DATA_PROVIDER)
+    list(APPEND SRC_DIRS_LIST "custom_provider")
+endif()
+
+
+idf_component_register(SRC_DIRS          ${SRC_DIRS_LIST}
+                       PRIV_INCLUDE_DIRS  "." "${ESP_MATTER_PATH}/examples/common/utils" "${ESP_MATTER_PATH}/examples/common/app_reset")
+
+target_compile_options(${COMPONENT_LIB} PRIVATE "-DCHIP_HAVE_CONFIG_H")

examples/stateful_light_switch/main/Kconfig.projbuild

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+menu "Example Configuration"
+
+    visible if CUSTOM_COMMISSIONABLE_DATA_PROVIDER
+
+    config DYNAMIC_PASSCODE_COMMISSIONABLE_DATA_PROVIDER
+        bool "Enable Dynamic Passcode Commissionable Data Provider"
+        depends on CUSTOM_COMMISSIONABLE_DATA_PROVIDER
+        default y
+
+    config DYNAMIC_PASSCODE_PROVIDER_DISCRIMINATOR
+        int "Discriminator in Dynamic Passcode Commissionable Data Provider"
+        depends on DYNAMIC_PASSCODE_COMMISSIONABLE_DATA_PROVIDER
+        default 3840
+        range 0 4095
+        help
+            Fixed discriminator in custom dynamic passcode commissionable data provider
+
+    config DYNAMIC_PASSCODE_PROVIDER_ITERATIONS
+        int "Iterations in Dynamic Passcode Commissionable Data Provider"
+        depends on DYNAMIC_PASSCODE_COMMISSIONABLE_DATA_PROVIDER
+        default 10000
+        range 1000 100000
+        help
+            Fixed iterations in custom dynamic passcode commissionable data provider
+
+    config DYNAMIC_PASSCODE_PROVIDER_SALT_BASE64
+        string "Base64-Encoded Salt in Dynamic Passcode Commissionable Data Provider"
+        depends on DYNAMIC_PASSCODE_COMMISSIONABLE_DATA_PROVIDER
+        default "0NHS09TV1tfY2drb3N3e36ChoqOkpaanqKmqq6ytrq8="
+        help
+            Fixed salt in custom dynamic passcode commissionable data provider. It should be a Base64-Encoded string.
+
+    config SUBSCRIBE_TO_ON_OFF_SERVER_AFTER_BINDING
+        bool "Enable subscribe to on/off server after binding"
+        default n
+        help
+            "Enables auto subscription to on/off server from client on change in binding"
+
+endmenu