Merge pull request #191 from reserve85/dev_DDSU666

add ddsu666 script

GetPowerFromDDSU666.sh

@@ -0,0 +1,53 @@
+#!/bin/sh
+
+# Script to read powermeter values from a DDSU666 Monophase
+# Needs "mbpoll" (command line utility to communicate with ModBus slave) to be installed, e.g. "apt install mbpoll"
+# Usage: GetPowerFromDDSU666 <Device_Number>
+
+# read registers 8196 via ModbusTCP
+
+VE_SYSTEM=$(mbpoll -a "$1" -b 9600 -P none -B -t 4:float -0 -r 8196 -c 1 -1 /dev/ttyUSB0 | grep "\[.*\]:")
+if [ $? -ne 0 ]; then
+        # failed, one more try
+        sleep 1
+        VE_SYSTEM=$(mbpoll -a "$1" -b 9600 -P none -B -t 4:float -0 -r 8196 -c 1 -1 /dev/ttyUSB0 | grep "\[.*\]:")
+        if [ $? -ne 0 ]; then
+                type mbpoll > /dev/null 2>&1
+                if [ $? -ne 0 ]; then
+                        echo "$0: mbpoll must be installed!"
+                else
+                        echo 0
+                fi
+                exit 1
+        fi
+fi
+
+# Get AC_GRID Value in KW
+AC_GRID=$(echo "$VE_SYSTEM" | sed -n -e "s/.*\[8196\]:[[:space:]]*\(-*[0-9]*\.[0-9]*\).*/\1/p")
+
+# Check that AC_GRID is not empty meaning that the GRID return 0
+if [ -z "$AC_GRID" ]; then
+   AC_GRID=$(echo "$VE_SYSTEM" | sed 's/.*: *\(.*\)$/\1/')
+else
+# Convert KW in W
+   AC_GRID=$(echo "$AC_GRID * 1000" | bc)
+fi
+
+#  Keep the integer part only
+AC_GRID=$(echo "$AC_GRID" | cut -d'.' -f1)
+
+# Check if AC_GRID is a number
+if echo "$AC_GRID" | grep -qE '^-*[0-9]+(\.[0-9]+)?$'; then
+    # DSSU666 Hoymiles specific if AC_GRID is positive set it as a Negative value because solar inverter are OverProduction
+    if [ "$(echo "$AC_GRID >= 0" | bc -l)" -eq 1 ]; then
+        AC_GRID=$(echo "$AC_GRID" | awk '{print ($1 < 0) ? -$1 : -$1}')
+    else
+    # DSSU666 Hoymiles specific AC_GRID is negative set it as a Positive value solar inverter are notProducing enough
+        AC_GRID=$(echo "$AC_GRID" | awk '{print ($1 < 0) ? -$1 : $1}')
+    fi
+else
+    echo "AC_GRID is not a valid number."
+fi
+
+echo "$AC_GRID"
+