[SL-ONLY] LCD, LED and Button implementation for Oven-app.

[arun-silabs]

Summary

This PR adds the logic to handle the hardware actions in Oven app.The actions mainly are : Updating LED, updating LCD and handling the oven-app behavior on button press.

Related issues

MATTER-5575

Testing

Built oven-app locally and tested the LCD, LED updates by sending onoff command and verified the button 1 implementation locally.

Readability checklist

The checklist below will help the reviewer finish PR review in time and keep the
code readable:

• PR title is
  descriptive
• Apply the
  “When in Rome…”
  rule (coding style)
• PR size is short
• Try to avoid "squashing" and "force-update" in commit history
• CI time didn't increase

See: Pull Request Guidelines

[Sarthak-Shaha]

Is this intended? Seems like double inclusion

[Copilot]

Pull Request Overview

This PR implements hardware UI functionality for the Silabs oven application, including LCD display management, LED control, and button input handling. The implementation adds visual feedback for cooktop state and oven mode, along with button-triggered control of the cooktop endpoint.

Key changes:

• New OvenUI class with LCD rendering methods for cooktop state and oven mode display
• LED control integration with cooktop on/off state
• Button handler for toggling cooktop and triggering binding events

Reviewed Changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
examples/oven-app/silabs/src/OvenUI.cpp	New file implementing LCD UI rendering for oven state visualization
examples/oven-app/silabs/include/OvenUI.h	Header defining OvenUI class interface for LCD drawing functions
examples/oven-app/silabs/src/OvenManager.cpp	Adds initialization of cooktop state and oven mode from cluster attributes, updates LCD on attribute changes
examples/oven-app/silabs/include/OvenManager.h	Adds getter methods for cooktop state, oven mode, and endpoint IDs
examples/oven-app/silabs/src/AppTask.cpp	Implements button handling, LED updates, and LCD refresh on state changes
examples/oven-app/silabs/include/AppTask.h	Adds UpdateLED/UpdateLCD methods and OvenButtonHandler declaration
examples/oven-app/silabs/BUILD.gn	Adds OvenUI.cpp to build sources

[Copilot]

Duplicate include of 'OvenUI.h' - this header is already included at line 25. Remove this duplicate inclusion.

Suggested change

#include "OvenUI.h"

[Copilot]

Using reinterpret_cast<intptr_t>(nullptr) is unnecessarily complex. Since the UpdateClusterState function doesn't use the context parameter, pass 0 directly or use static_cast<intptr_t>(0) for clarity.

Suggested change

	chip::DeviceLayer::PlatformMgr().ScheduleWork(UpdateClusterState, reinterpret_cast<intptr_t>(nullptr));
	chip::DeviceLayer::PlatformMgr().ScheduleWork(UpdateClusterState, 0);

[Copilot]

The OnOff cluster is being set to the current state rather than the new toggled state. Line 225 reads the current state, but the toggle logic should invert this value before setting it. The state should be !currentState to achieve the toggle behavior.

Suggested change

	ChipLogProgress(AppServer, "Updating cooktop OnOff cluster state to %s", currentState ? "On" : "Off");
	// Set the OnOff attribute value for the cooktop endpoint
	Protocols::InteractionModel::Status status =
	OnOffServer::Instance().setOnOffValue(OvenManager::GetCookTopEndpoint(), currentState, false);
	ChipLogProgress(AppServer, "Updating cooktop OnOff cluster state to %s", !currentState ? "On" : "Off");
	// Set the OnOff attribute value for the cooktop endpoint
	Protocols::InteractionModel::Status status =
	OnOffServer::Instance().setOnOffValue(OvenManager::GetCookTopEndpoint(), !currentState, false);

[Sarthak-Shaha]

Does this not apply anymore?