#!/bin/bash

# Define Modbus communication parameters
DEVICE="/dev/ttyUSB0"
BAUD="19200"
PARITY="none"
ADDRESS="1"
START_COIL="1"
COIL_COUNT="11"

# Function to read coils and return as an array
read_coins() {
    output=$(mbpoll $DEVICE -m rtu -b $BAUD -P $PARITY -a $ADDRESS -r $START_COIL -c $COIL_COUNT -t 0 -1 -o 2 | grep -E '\[\s*[0-9]+\]:')
    coils=()
    while IFS= read -r line; do
        coil=$(echo $line | awk '{print $2}')
        coils+=($coil)
    done <<< "$output"
    echo ${coils[@]}
}

# Function to write coils
write_coins() {
    local values=$@
    mbpoll $DEVICE -m rtu -b $BAUD -P $PARITY -a $ADDRESS -r $START_COIL -t 0 -1 -o 2 $values
}

# Read current state of the first 11 coils
before_coins=$(read_coins)
echo "Before: $before_coins"

# Toggle the 11th coil
coin_array=($before_coins)
if [ ${coin_array[10]} -eq 0 ]; then
    coin_array[10]=1
else
    coin_array[10]=0
fi

# Write to the coils
write_coins ${coin_array[@]}

# Output the current state of the coils
after_coins=$(read_coins)
echo "After: $after_coins"

# Reporting to console
if [ ${coin_array[10]} -eq 1 ]; then
    echo "Manual boost was turned ON."
else
    echo "Manual boost was turned OFF."
fi