adds sending of sensor values to homeassistant via mqtt

mqtt/send

@@ -0,0 +1,32 @@
+#!/bin/bash
+
+ROUNDS=5
+
+VOLTAGE=0
+CURRENT=0
+POWER=0
+
+for i in $(seq ${ROUNDS}); do
+    RESULT=$(/usr/bin/ina219)
+
+    VOLTAGE_RAW=$(echo $RESULT | /bin/sed 's/\([0-9]\+\)mV \+\([0-9\.]\+\)mA/\1/')
+    VOLTAGE=$(echo "scale=3; $VOLTAGE+$VOLTAGE_RAW" | /usr/bin/bc)
+
+    CURRENT_RAW=$(echo $RESULT | /bin/sed 's/\([0-9]\+\)mV \+\([0-9\.]\+\)mA/\2/')
+    CURRENT=$(echo "scale=3; $CURRENT+$CURRENT_RAW" | /usr/bin/bc)
+
+done
+    
+VOLTAGE=$(echo "scale=0; $VOLTAGE/$ROUNDS" | /usr/bin/bc)
+CURRENT=$(echo "scale=0; $CURRENT/$ROUNDS" | /usr/bin/bc)
+POWER=$(echo "scale=0; $VOLTAGE*$CURRENT/1000" | /usr/bin/bc)
+
+
+echo "voltage.value $VOLTAGE"
+echo "current.value $CURRENT"
+echo "power.value $POWER"
+
+SENSOR_NAME="voltage" SENSOR_UNIT="mV" DEVICE_NAME="heat-pi ina219" ./mqtt $VOLTAGE
+SENSOR_NAME="current" SENSOR_UNIT="mA" DEVICE_NAME="heat-pi ina219" ./mqtt $CURRENT
+SENSOR_NAME="power" SENSOR_UNIT="mW" DEVICE_NAME="heat-pi ina219" ./mqtt $POWER
+