From e39a8fb5578f679a2c59a6c46d31fd4e5c91f90b Mon Sep 17 00:00:00 2001
From: David Schroeder <david@schroedercity.com>
Date: Sun, 11 Sep 2022 15:25:26 -0500
Subject: [PATCH] Update powerwall.sh

---
 powerwall.sh | 14 ++++++--------
 1 file changed, 6 insertions(+), 8 deletions(-)

diff --git a/powerwall.sh b/powerwall.sh
index fdc0e555..aa686aea 100755
--- a/powerwall.sh
+++ b/powerwall.sh
@@ -111,28 +111,26 @@ CHECKTEMP_SERVICE(){
 }
 
 CHECKACV_SERVICE(){
-	last_volt=0
+	voltstatus=0
 	while true
 	do
 		INPUTACV=$(curl -s "http://10.10.0.61/stats.json" | jq '.inputs .inV')
 		datetime=`date +'%Y-%m-%d %H:%M:%S'`
-		volt_diff=$((${last_volt%.*} - ${INPUTACV%.*}))
-		[ $volt_diff -lt 0 ] && volt_diff=$(($volt_diff * -1))
-		if [ ${INPUTACV%.*} -ge ${min_volt} ]; then
+		if [ ${INPUTACV} -ge ${min_volt} ]; then
 			echo "($datetime) normal voltage: ${INPUTACV}V"
-			if [ $last_volt -lt ${min_volt} ]; then
+			if [ $voltstatus -eq 3 ]; then
 				echo -e "($datetime) Normal voltage detected\nVOLTAGE: ${INPUTACV}V" | mail -s "POWER NOMINAL AGAIN" $email_alert
-			elif [ "$last_volt" = "0" ]; then
+			elif [ $voltstatus -eq 0 ]; then
 				echo -e "($datetime) Normal voltage detected\nVOLTAGE: ${INPUTACV}V" | mail -s "Power Nominal" $email_alert
 			fi
 			last_volt=1
 		else
-			last_volt=${INPUTACV}
 			echo "($datetime) LOW voltage: ${INPUTACV}V"
-			if [ $volt_diff -gt 1 ] || [ "$last_volt" = "1" ]; then
+			if [ $voltstatus -lt 3 ]; then
 				echo -e "($datetime) Power off or low voltage detected\nVOLTAGE: ${INPUTACV}V" | mail -s "POWER ALERT - LOW POWER!!" $email_alert
 				
 			fi
+			voltstatus=3
 		fi
 	    sleep 30
 	done # &