Writing a Code-Driven Application: Silicon Labs (GN)

Writing a Code-Driven Application: Silicon Labs (GN)#

Build and entrypoint deltas for converting examples/all-devices-app/silabs/ into a single-device product application. See Writing a Code-Driven Application for architecture and device class implementation.

1. GN Build Deltas (silabs/BUILD.gn)#

  • Remove Simulator Scaffolding:

    • Remove the enabled_devices.gni import, all-devices-common/device-factory, unused all-devices-common/device/types/* targets, and the shell/KVS device-selection files (DeviceShellCommands.*, AppKeys.h).

  • Keep Platform & Root Node Dependencies:

    • Keep the root-node:wifi, root-node:thread, and root-node:ota conditional blocks, along with the device info provider targets.

  • Link the Product Device:

    • Add your product device sources and depend on the single base device target (e.g., device/types/speaker):

  sources += [
    "include/MyProductSpeaker.h",
    "src/MyProductSpeaker.cpp",
  ]

  deps = [
    "${chip_root}/examples/all-devices-app/all-devices-common/device/types/speaker",
    # ... keep existing :sdk, codedriven, providers, and conditional root-node:wifi / :thread / :ota blocks ...
  ]

2. Entrypoint Deltas (silabs/src/AppTask.cpp)#

  • Keep:

    • Platform initialization, persistence setup, sDataModelProvider creation, and sRootNode (RootNodeWith<...>) construction and registration on kRootEndpointId (0) in AppTask::InitCodeDrivenDataModel().

  • Remove:

    • All DeviceFactory (NoHooksDeviceFactory), build-time device list (enabled_devices.h), KVS device-type selection, and shell device-switching code.

  • Replace:

    • After the existing sRootNode->Register(...) call in AppTask::InitCodeDrivenDataModel(), instantiate and register the product device on kDeviceEndpointId (EndpointId(1)):

    // ... keep existing sRootNode->Register(...) above ...

    sProductDevice = std::make_unique<chip::app::MyProductSpeaker>(sTimerDelegate);
    VerifyOrReturnError(sProductDevice != nullptr, CHIP_ERROR_NO_MEMORY);
    CHIP_ERROR err = sProductDevice->Register(kDeviceEndpointId, *sDataModelProvider);
    if (err != CHIP_NO_ERROR)
    {
        sRootNode->Unregister(*sDataModelProvider);
    }
    return err;