added instructions to run chip-tool in WSL

docs/en/developing.rst

@@ -36,8 +36,15 @@ Development on Windows is supported using Windows Subsystem for Linux (WSL). Ple
 - Here onwards process for setting esp-matter and building examples is same as other hosts.
 - Please clone the repositories from inside the WSL environment and not inside a mounted directory. 
 
+For using CHIP tool on WSL, please check `Using CHIP-tool in WSL <https://github.com/espressif/esp-matter/blob/main/docs/en/using_chip_tool.rst>`__.
+
 For using VSCode for development, please check `Developing in WSL <https://code.visualstudio.com/docs/remote/wsl>`__.
 
+.. toctree::
+   :hidden:
+   :maxdepth: 1
+   
+   Using CHIP-tool in WSL <using_chip_tool>
 
 2.1.2 Getting the Repositories
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@@ -59,7 +66,7 @@ Cloning esp-idf:
    ::
 
       git clone --recursive https://github.com/espressif/esp-idf.git
-      cd esp-idf; git checkout 6b1f40b9bf; git submodule update --init --recursive;
+      cd esp-idf; git checkout v5.1.2; git submodule update --init --recursive;
       ./install.sh
       cd ..
 

docs/en/using_chip_tool.rst

@@ -0,0 +1,222 @@
+1. Working with the CHIP Tool in WSL2
+=====================================
+
+The CHIP Tool (chip-tool) is a Matter controller implementation that allows to commission a Matter device into the network and to communicate with it using Matter messages, which may encode Data Model actions, such as cluster commands.
+
+The tool also provides other utilities specific to Matter, such as parsing of the setup payload or performing discovery actions.
+
+The CHIP Tool requires access to the local network and bluetooth.
+
+1.1 Requirements
+----------------
+
+- Windows 11 64-Bit Pro/Enterprise/Education [for Hyper-V Manager]
+
+
+1.2 Providing access to local network
+-------------------------------------
+
+WSL2 does not share an IP address with your computer. Because WSL2 was implemented with Hyper-V, it runs with a virtualized ethernet adapter. Your computer hides WSL2 behind a NAT where WSL2 has its own unique IP. 
+
+To provide an IP address from the local network,  WSL2 instance needs to be connected to a virtual Bridge through Hyper-V Manager.
+
+1.2.1 Enabling Hyper-V for use on Windows 10
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+1.2.1.1 Enable Hardware Virtualization in BIOS
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+- In the Startup Menu, enter the BIOS setup.
+- In the BIOS Setup Utility,open the Configuration or Security tab.
+- Enable the Virtualization Technology option
+
+1.2.1.2 Setting Up Hyper-V
+^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Ensure that hardware virtualization support is turned on in the BIOS settings 
+Save the BIOS settings and boot up the machine normally.
+
+- Right click on the Windows button and select ‘Apps and Features’.
+
+- Select Programs and Features on the right under related settings.
+
+- Select Turn Windows Features on or off.
+
+- Select Hyper-V and click OK.
+
+.. image:: ../_static/windows_feature.png
+   :alt: Windows Features
+
+1.2.2 Configure Hyper-V for Bridge Network
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+.. image:: ../_static/HyperV_bridge.png
+   :alt: Configuration of Bridge Network for WSL
+
+- Open Hyper-V Manager.
+
+- From the Actions pane, select Virtual Switch Manager.
+
+- Choose the type of virtual switch as **External**, then select Create Virtual Switch.
+
+- Enter a name for the virtual switch as **Bridge**.
+
+- Choose the wifi network adapter (NIC) that you want to use, then select OK.
+
+You'll be prompted with a warning that the change may disrupt your network connectivity; select Yes if you're happy to continue.
+
+
+Create .wslconfig file on C:/Users/user-name/ and add the following lines to connect to configured virtual Bridge Network.
+
+.. code-block:: ini
+
+    [wsl2]
+    networkingMode = bridged
+    vmSwitch = Bridge
+    ipv6 = true
+
+
+1.2.2.1 Checking the configuration
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+.. code-block:: ini
+    
+    ifconfig
+
+The IPv4 Address assigned to the eth0 will be from the local network and IPv6 Address will also be assigned to it.
+
+.. code-block:: ini
+    
+    avahi-browse _matter._tcp -r 
+
+
+If the configuration was done correctly, all the matter operational nodes performing mDns advertisement on the local network will be shown.
+
+1.2.2.2 Troubleshoot
+^^^^^^^^^^^^^^^^^^^^
+
+**If no IP address assigned to WSL or same IP address as host,  uspipd fails with tcp connect error, not able to ping external network.**
+
+
+
+1) Run  ```wsl --shutdown``` and wait for WSL instance to close.
+2) Run Hyper-V Manager and open Virtual Switch Manager from Actions Pane.
+3) Disconnect and Reconnect to Wi-Fi.
+4) Start WSL instance.
+5) If still no IP is assigned, run ```sudo dhclient```
+
+
+1.3 Providing access to bluetooth
+---------------------------------
+
+
+Bluetooth support is missing in default WSL kernel. To add support for bluetooth, WSL kernel needs to be recompiled with right drivers.
+
+1.3.1 Building custom kernel for bluetooth access in WSL2
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+.. code-block:: ini
+
+    git clone --depth 1 --branch linux-msft-wsl-6.1.21.2 https://github.com/microsoft/WSL2-Linux-Kernel.git
+
+
+Replace branch with the latest available WSL-Linux-Kernel tag.
+
+
+.. code-block:: ini
+
+    cd WSL2-Linux-Kernel
+    git checkout linux-msft-wsl-6.1.21.2
+    cp /proc/config.gz config.gz
+    gunzip config.gz
+    mv config .config
+    sudo make menuconfig
+
+**Select the features to be enabled in the kernel:**
+
+1) Enable Networking support ->Bluetooth subsystem support.
+
+2) Enable Networking Support ->Bluetooth Subsystem Support ->Bluetooth device drivers -> HCI USB driver.
+
+3) Save the config file.
+
+.. code-block:: ini
+
+    sudo make -j$(getconf _NPROCESSORS_ONLN) && sudo make modules_install -j$(getconf _NPROCESSORS_ONLN) && sudo make install -j$(getconf _NPROCESSORS_ONLN)
+
+The new kernel image will be built.
+
+**Copy the new kernel**
+
+.. code-block:: ini
+    
+    cp arch/x86/boot/bzImage /mnt/path/to/kernel/bluetooth-bzImage
+
+1.3.2 Configure WSL to use new custom kernel image
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Add the following line to the created ```.wslconfig``` file.
+
+.. code-block:: ini
+    
+    [wsl2]
+    kernel=c:\\users\\<user>\\bluetooth-bzImage
+
+Replace the path with the path of new custom kernel built.
+
+1.3.3 Attaching Bluetooth module to WSL2
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Get the busid of the bluetooth module.
+.. code-block:: ini
+
+    usbipd wsl list
+
+Attach the bluetooth module to WSL2 instance using usbipd.
+
+.. code-block:: ini
+
+    usbipd wsl attach --distribution Ubuntu-22.04 --busid 1-10
+
+Replace the --distribution and --busid arguments appropriately.
+
+.. code-block:: ini
+
+    $ lsusb
+    Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
+    Bus 001 Device 003: ID 8087:0029 Intel Corp. AX201 Bluetooth
+    Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
+
+The bluetooth module should be available to WSL.
+
+1.3.4 Testing Bluetooth 
+~~~~~~~~~~~~~~~~~~~~~~~
+
+Install bluez library and scan for bluetooth devices.
+
+.. code-block:: ini
+    
+    sudo apt install bluez
+
+Start scanning for available Bluetooth devices.
+
+.. code-block:: ini
+    
+    bluetoothctl scan on
+
+The bluetooth discovery should start.
+
+.. image:: ../_static/bluetooth_scan.png
+   :alt: Bluetooth scanning
+
+1.4 Final .wslconfig file
+-------------------------
+
+.. code-block:: ini
+
+    [wsl2]
+    kernel = D:\\custom-kernel\\bluetooth-bzImage
+    networkingMode = bridged
+    vmSwitch = Bridge
+    ipv6 = true
+
+Replace the kernel path appropriately.