drv_rgb_led

Driver unit applying LED command events to RGB hardware channels.

Inherited Component

RGB_LED_Driver

Inherited Requirements

REQ-IFC-005

Relationship Diagram

SW Unit Relations

Outgoing Relations

Relation	UML Type	Visibility	Target Unit	Description
SWR-019	dependency	private	hal_event_adapter	LED driver uses hardware abstraction events.

Incoming Relations

Relation	UML Type	Visibility	Source Unit	Description
SWR-016	dependency	public	ao_status_indication	Status indication commands LED driver outputs.

Data Types

drv_rgb_led_contextstruct

Internal runtime context for drv_rgb_led.

Struct Members

Name	Type	Description
driver_state	uint8_t	Driver state.
color_code	uint8_t	Applied color code.
blink_period_ms	uint16_t	Applied blink period.
hw_ready	bool	Hardware readiness.

drv_rgb_led_eventstruct

Event payload handled by drv_rgb_led.

Struct Members

Name	Type	Description
signal_id	uint16_t	LED driver event id.
requested_color	uint8_t	Requested color code.
blink_enable	bool	Blink command.
intensity_pct	uint8_t	Requested intensity percent.

drv_rgb_led_resultenum

Result code for drv_rgb_led operations.

Enum Members

Name	Value	Description
OK	0	LED command applied.
HAL_WRITE_ERROR	1	HAL write failed.
UNSUPPORTED_PATTERN	2	Pattern not supported.

Attributes

Attribute	Type	Visibility	Description
ctx	drv_rgb_led_context	private	Runtime context for drv_rgb_led state timing and error tracking.

Methods

dispatch

Return Type: drv_rgb_led_result
Visibility: public
Description: Process one drv_rgb_led event and update runtime outputs.

Parameters

Name	Type	Direction	Description
event	drv_rgb_led_event	in	Process one drv_rgb_led event and update runtime outputs.

init

Return Type: drv_rgb_led_result
Visibility: public
Description: Initialize drv_rgb_led runtime state and dependencies.

Dynamic Behaviour

Activity Diagrams

drv_rgb_led_activity

This activity diagram defines driver level translation from abstract LED intents into hardware channel writes including failure handling behavior when output programming does not complete as requested.

Timing Diagrams

drv_rgb_led_timing

This timing diagram shows driver execution from command reception through hardware mapping and write completion to validate tight actuation timing in the LED indication chain.

Sequence Diagrams

SEQ-003_Status_To_LED_Indication

Diagnostics status outputs are transformed by status indication logic into concrete LED driver commands.