#!/bin/bash

# SPDX-License-Identifier: BSD-3-Clause

# Copyright(c) 2021-2025 Intel Corporation. All rights reserved.

# needs usbrelay package: https://github.com/darrylb123/usbrelay

# param1: --debug | switch name

# param2: switch state

usbrelay_switch()

{

if [[ "$1" == "--debug" ]]; then

dlogi "Debug mode: Current status of all relays:"

if usbrelay --debug 2>&1 | grep -q "Found 0 devices"; then

dloge "No relays detected. Found 0 devices. Check hardware connection."

dloge "The usbrelay hw module is not responding or no relays detected. Check hardware connection."

# Skip the test if no relays are detected

exit 2

fi

return 0

fi

# Declare a constant for the relay settle time

local USBRELAY_SETTLE_TIME=0.5

local switch_name=$1

local state=$2

dlogi "Setting usbrelay switch $switch_name to $state."

usbrelay "$switch_name=$state" --quiet || {

die "Failed to set usbrelay switch $switch_name to $state.

The usbrelay hw module is not responding or no relays detected.

Check hardware connection."

}

# wait for the switch to settle

sleep "$USBRELAY_SETTLE_TIME"

# Display current state of the switch

current_state=$(usbrelay | awk -F= -v name="$switch_name" '$1 == name { print $2 }')

# Check if current_state is equal to the requested state

[[ "$current_state" == "$state" ]] || {

die "usbrelay switch $switch_name failed to set to $state (current: $current_state)"

}

case "$current_state" in

'1') dlogi "Current state of $switch_name is: on";;

'0') dlogi "Current state of $switch_name is: off";;

*) die "Invalid state for $switch_name: $current_state";;

esac

}