#!/bin/bash
#Eingabegerät
INPUT_DEV="/dev/ttyUSB0";
stty -F $INPUT_DEV 1:0:8bd:0:3:1c:7f:15:4:5:1:0:11:13:1a:0:12:f:17:16:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0

#Datum, Zeit und Datei.
DATE=$(/bin/date +%Y%m%d-%H%M%S);
PFAD=$(dirname "$(readlink -e "$0")");
FILE=$PFAD"/"$DATE."txt";
LOG=$PFAD"/edl.log";

#Datenbank
DB_USER="";
DB_PASS="";
DB_HOST="";
DB_NAME="";
DB_TAB="EdlData";

#Startsequenz
SEQ_START="1B1B1B1B01010101";
#Endsequenz
SEQ_END="001B1B1B1B1A00";
#Beginn Zähler 1.8.0 (Wirkarbeit Bezug)
SEQ_180="070100010800FF";
#Beginn Zähler 2.8.0 (Wirkarbeit Lieferung)
SEQ_280="070100020800FF";
#Beginn aktuelle Wirkleistung
SEQ_PWR="070100100700FF";

INOUT=2147483647;

cat $INPUT_DEV 2>/dev/null | xxd -p -u -l 600 1> $FILE;

STRING=`tr -d "\n" <  $FILE`;
STRING=${STRING#*$SEQ_START};
STRING=${STRING%%$SEQ_END*};

STRING_180=${STRING#*$SEQ_180};
let STRING_180=0x${STRING_180:20:10};

STRING_280=${STRING#*$SEQ_280};
let STRING_280=0x${STRING_280:20:10};

STRING_PWR=${STRING#*$SEQ_PWR};
let STRING_PWR=0x${STRING_PWR:14:8};

#Richtung der Leistung abfangen und in W umrechnen..
if [ $STRING_PWR -gt $INOUT ]; then
 STRING_PWR_OUT=$(echo "(4294967295 - $STRING_PWR) / (10)"|bc);
 STRING_PWR_IN=0;
else
 STRING_PWR_IN=$(echo "$STRING_PWR / 10"|bc);
 STRING_PWR_OUT=0;
fi
#Zählerstände in Wh!
STRING_180=$(echo "scale=4; $STRING_180 / 10" |bc);
STRING_280=$(echo "scale=4; $STRING_280 / 10" |bc);

#LOG
echo $DATE";"$STRING_180";"$STRING_280";"$STRING_PWR_IN";"$STRING_PWR_OUT >> $LOG ;

#DATENBANK
mysql -u $DB_USER -p$DB_PASS -h $DB_HOST -D $DB_NAME <<EOF
INSERT INTO $DB_TAB (TimeStamp,zaehlerstand_in,zaehlerstand_out,active_in,active_out) VALUES (CURRENT_TIMESTAMP,'$STRING_180','$STRING_280','$STRING_PWR_IN','$STRING_PWR_OUT')
EOF

#AUFRAEUMEN
rm $FILE;