17.4. Wiper Controller - WiprCtlr

• Overview

• Functions

• Ports

• Parameters

Id	WiprCtlr
Version	main
Title	Wiper Controller
System	Wiper Washer
Document Type	Application Software Component Specification Preview

17.4.1. Overview

The Wiper Controller component controls the vehicle’s windshield wipers based on user requests and feedback from the Wiper Driver. It implements a state machine to manage the wiper operation modes and transitions between them. The component also detects and reports faults related to the wiper system.

17.4.2. Functions

	Title	Description
1	Wiper Control State Machine	Implements the main state machine that controls the wiper operation modes (OFF, ON) and the transitions between them based on user requests and wiper status feedback.
2	Wiper Command Generation	Generates the appropriate wiper command (turn off, low speed, high speed) to be sent to the Wiper Driver based on the current state and user request.
3	Wiper Home Position Management	Controls the wiper “stay in home position” command and manages faults related to the wiper failing to reach the home position.
4	Wiper Request Validation	Validates the wiper request signals and sets faults in case of invalid requests.
5	Wiper Status Monitoring	Monitors the wiper status feedback signals from the Wiper Driver and sets faults in case of errors or invalid states.
6	Fault Detection and Reporting	Detects and reports faults related to the wiper system, such as wiper control faults, home position faults, and communication faults.

17.4.3. Ports

	Id	Direction	Data Type	Dimensions	Unit	Description	Keywords
1	WiprReq	Incoming	Enum: CmnenaWiprMod	[1]		Wiper actual request	Wiper Request
2	WiprReqVld	Incoming	boolean	[1]		Wiper actual request validity	Wiper Request Valid
3	WiprHomePosn	Incoming	boolean	[1]		Wiper at home position feedback	Wiper Home Position
4	WiprHomePosnVld	Incoming	boolean	[1]		Wiper at home position validity	Wiper Home Position Valid
5	WiprSt	Incoming	Enum: CmnenaWiprMod	[1]		Wiper actual state	Wiper State
6	WiprStVld	Incoming	boolean	[1]		Wiper actual state validity	Wiper State Valid
7	WiprCmd	Outgoing	Enum: CmnenaWiprMod	[1]		Wiper mode command	Wiper Command
8	WiprStayHomeCmd	Outgoing	boolean	[1]		Stay at home position command	Wiper Stay Home Command
9	Diagc	Outgoing	Bus: WprctrlDiagc	[-1]		Diagnostic bus that contains info about wiper faults: - wiper request is not valid - wiper feedback state is not valid - home position fault - wiper critical fault	Diagnostic

17.4.4. Parameters

	Id	Data Type	Dimensions	Range	Unit	Description	Keywords
1	WprctrlCtlFltTiout	single	[1,1]	Min: 0, Max: 5	sec	Waiting time before control fault flag is raised	Wprctrl Control Fault Timeout
2	WprctrlIgnHome	boolean	[1,1]	Min: 0, Max: 1		Ignore home position input for wipers parking	Wprctrl Ignore Home
3	WprctrlIgnHomeDly	single	[1,1]	Min: 0, Max: 10	sec	Waiting time before wiper command is reset	Wprctrl Ignore Home Delay
4	WprctrlIntmDly	single	[1,1]	Min: 0, Max: 60	sec	Delay between wiper single strokes while in Intermittent Repeat mode	Wprctrl Intermittent Delay
5	WprctrlLtchCtlFlt	boolean	[1,1]	Min: 0, Max: 1		Latch Wiper Control Fault until the successful actuation	Wprctrl Latch Control Fault
6	WprctrlMaxHomePosnTi	single	[1,1]	Min: 0, Max: 60	sec	Maximum time for a wiper to reach home position	Wprctrl Maximum Home Position Time
7	WprctrlStuckHomeFltTiout	single	[1,1]	Min: 0, Max: 10	sec	Waiting time before stopping attempts to remove a wiper from home position	Wprctrl Stuck Home Fault Timeout