#!/bin/bash
# Bash script to control dream-cheeky red button
# Inspirated by Malcolm Sparks <malcolm@congreve.com> C driver
# for the same device.
# developed mostly by Fernando Merces <www.mentebinaria.com.br>
# with some contributions by Alfredo Casanova <atcasanova@gmail.com>
######################################################################

lid_closed=21
button_pressed=22
lid_open=23

last=$lid_closed
buffer="\x08\x00\x00\x00\x00\x00\x00\x02"

while true; do
    sleep 0.05
    echo -ne "$buffer" > /dev/hidraw3
    buf=$(timeout 0.02 head -c1 /dev/hidraw3)
    [ ${#buf} -eq 1 ] || continue
    status=$(echo -ne "$buf" | hexdump -ve '"%d"')
    if (( $last == $lid_closed )) && (( $status == $lid_open )); then
        echo "LID OPEN $last $status"
    elif (( $last != $button_pressed )) && (( $status == $button_pressed )); then
        echo "FIRE $last $status"
    elif (( $last != $lid_closed )) && (( $status == $lid_closed )); then
        echo "LID CLOSED $last $status"
    fi
    last=$status
done