Add an extension to a Matter device

Add the Manufacturer Specific (MS) Cluster to your device

ZCL Advanced Platform (ZAP) is used to configure Matter clusters and other device features. Use the ZAP GUI to add your custom MS cluster to your device. Starting with rootnode_onofflight_bbs1b7IaOV.zap as a base reference device, create a copy of its data model:

$ cd examples/chef
$ cp rootnode_onofflight_bbs1b7IaOV.zap rootnode_onofflight_samplemei.zap

Run the UI using your new device as input:

$ ./chef.py -d rootnode_onofflight_samplemei -t linux -gzb

Once the UI is loaded, click Endpoint - 1:
Search for your cluster by entering its name in the Search Clusters field. Once located, select Not Enabled and change it to Server:
Click the to configure the cluster:
In the Attributes tab, ensure all attributes are enabled:
In the Commands tab ensure all commands are enabled:
Leave the cluster configuration window by clicking on the button.
Save your data model by selecting File > Save or Ctrl+S.
Exit ZAP by selecting File > Exit or Ctrl+Q. The build starts.
Regenerate the ZAP and codegen files with:
```
$ ../../scripts/tools/zap_regen_all.py
```
This content is confidential and only visible to you. Do not share or discuss until authorized to do so.

Notice that examples/chef/devices/rootnode_onofflight_samplemei.matter file was created. The .matter files also define the data model and are used by the Google-provided packaged code generator to generate Android packages for use in the Home APIs.

Run your sample in your local machine with:

$ linux/out/rootnode_onofflight_samplemei

Test using chip-tool

In a different terminal, build chip-tool with your new MS clusters with:

$ cd <chip_root>/examples/chip-tool
$ source <chip_root>/scripts/activate.sh
$ gn gen out
$ ninja -C out

Once you are running your sample in your local machine, use chip-tool to commission it:

out/chip-tool pairing onnetwork 1 20202021

To read from an attribute, enter:

$ out/chip-tool samplemei read flip-flop 1 1 # destination-id, endpoint-id
(...)
CHIP:DMG: ReportDataMessage =
CHIP:DMG: {
CHIP:DMG:       AttributeReportIBs =
CHIP:DMG:  [
CHIP:DMG:    AttributeReportIB =
CHIP:DMG:    {
CHIP:DMG:      AttributeDataIB =
CHIP:DMG:      {
CHIP:DMG:        DataVersion = 0x2999c13f,
CHIP:DMG:        AttributePathIB =
CHIP:DMG:        {
CHIP:DMG:          Endpoint = 0x1,
CHIP:DMG:          Cluster = 0xfff1fc20,
CHIP:DMG:          Attribute = 0x0000_0000,
CHIP:DMG:        }
CHIP:DMG:
CHIP:DMG:        Data = false,
CHIP:DMG:      },
CHIP:DMG:
CHIP:DMG:    },
CHIP:DMG:
CHIP:DMG:  ],
CHIP:DMG:
CHIP:DMG:  SuppressResponse = true,
CHIP:DMG:  InteractionModelRevision = 10
CHIP:DMG: }
CHIP:TOO: Endpoint: 1 Cluster: 0xFFF1_FC20 Attribute 0x0000_0000 DataVersion: 697942335
CHIP:TOO:   FlipFlop: FALSE
(...)

To write to an attribute:

$ out/chip-tool samplemei write flip-flop true 1 1
(...)
CHIP:DMG: WriteResponseMessage =
CHIP:DMG: {
CHIP:DMG:  AttributeStatusIBs =
CHIP:DMG:  [
CHIP:DMG:    AttributeStatusIB =
CHIP:DMG:    {
CHIP:DMG:      AttributePathIB =
CHIP:DMG:      {
CHIP:DMG:        Endpoint = 0x1,
CHIP:DMG:        Cluster = 0xfff1fc20,
CHIP:DMG:        Attribute = 0x0000_0000,
CHIP:DMG:      }
CHIP:DMG:
CHIP:DMG:      StatusIB =
CHIP:DMG:      {
CHIP:DMG:        status = 0x00 (SUCCESS),
CHIP:DMG:      },
CHIP:DMG:
CHIP:DMG:    },
CHIP:DMG:
CHIP:DMG:  ],
CHIP:DMG:
CHIP:DMG:  InteractionModelRevision = 10
CHIP:DMG: }
(...)

And to call a command:

$ out/chip-tool samplemei ping 1 1
(...)
CHIP:DMG: InvokeResponseMessage =
CHIP:DMG: {
CHIP:DMG:  suppressResponse = false,
CHIP:DMG:  InvokeResponseIBs =
CHIP:DMG:  [
CHIP:DMG:    InvokeResponseIB =
CHIP:DMG:    {
CHIP:DMG:      CommandStatusIB =
CHIP:DMG:      {
CHIP:DMG:        CommandPathIB =
CHIP:DMG:        {
CHIP:DMG:          EndpointId = 0x1,
CHIP:DMG:          ClusterId = 0xfff1fc20,
CHIP:DMG:          CommandId = 0x0,
CHIP:DMG:        },
CHIP:DMG:
CHIP:DMG:        StatusIB =
CHIP:DMG:        {
CHIP:DMG:          status = 0x00 (SUCCESS),
CHIP:DMG:        },
CHIP:DMG:
CHIP:DMG:      },
CHIP:DMG:
CHIP:DMG:    },
CHIP:DMG:
CHIP:DMG:  ],
CHIP:DMG:
CHIP:DMG:  InteractionModelRevision = 10
CHIP:DMG: },
(...)