zynq_7010/zynq_7010_code/countdown.sh

#!/bin/sh

# A countdown timer
# GNU GPLv3
value_num=$#
HOU=$2
MIN=$3
SEC=$4
start(){
        # If there are 3 arguments given, they become H, M, and S. Otherwise, the user is asked
        if [ $HOU -eq 0 ] && [ $MIN -eq 0 ] && [ $SEC -eq 0 ] ; then
            HOU=0
            MIN=30
            SEC=0
        fi

        if [ $SEC -lt 60 ] ; then
            SEC=60
        fi

        # Convert input to seconds
        TIMER=$(( ($HOU*3600) + ($MIN*60) + $SEC ))

        # Count down and output remaining time to temp file
        while [ $TIMER -gt 0 ]
        do
            #printf "%02dh:%02dm:%02ds\n" $((TIMER/3600)) $((TIMER%3600/60)) $((TIMER%60))
			printf "%02d:%02d:%02d\n" $((TIMER/3600)) $((TIMER%3600/60)) $((TIMER%60))
            sleep 10
            TIMER=$(( TIMER - 10 ))
        done

        if [ $SEC -gt 0 ] ; then
            sh /mnt/flash-disk/low_power.sh 1

        fi
}

stop(){
    echo "timer need to be killed"
}

if [  "$1" != "" ]; then
        case $1 in
                start|stop) "$1" ;;
        esac
fi