#!/bin/bash
#
# log a register (electric energie) of Eastron meter to Volkszaehler.org
#
# example conjob:
# * * * * *	root	/usr/local/bin/sdm_mbrtu.sh
#

# PATH for cronjob
PATH=/usr/local/bin:$PATH

# config Modbus
TTY="/dev/serial/by-id/usb-FTDI_FT232R_USB_UART_A50285BI-if00-port0"
BAUD=2400
ADDR=1
REG=342

# config VZ
HOST=localhost
UUID=6836dd20-00d5-11e0-bab1-856ed5f959ae


# read Modbus
DATA=( $(mbrtu -d$TTY -b$BAUD -pn -s1 -a$ADDR -fi -tf32_dcba -n2 -r$REG) )
if [ -z ${DATA[2]} ]
then
    echo "no data revcieved on modbus"
else
    echo "${DATA[2]}"

    # Timestamp
    TS=$(date +%s)
    TS=$(($TS*1000))

    # write VZ
    echo wget -O - -q "http://$HOST/middleware.php/data/$UUID.json?operation=add&ts=$TS&value=${DATA[2]#DATA=}"
    wget -O - -q "http://$HOST/middleware.php/data/$UUID.json?operation=add&ts=$TS&value=${DATA[2]#DATA=}"
    printf "\n"
fi