From dcc80243439bb0e91898de2104541c80695f5797 Mon Sep 17 00:00:00 2001
From: AAPohl <82733706+AAPohl@users.noreply.github.com>
Date: Sat, 19 Oct 2024 12:13:26 +0200
Subject: [PATCH] SMA EVCharger: add api.EnergyMeter (#16731)

---
 charger/smaevcharger.go | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/charger/smaevcharger.go b/charger/smaevcharger.go
index f557b81c6..b25555f62 100644
--- a/charger/smaevcharger.go
+++ b/charger/smaevcharger.go
@@ -233,6 +233,14 @@ func (wb *Smaevcharger) MaxCurrentMillis(current float64) error {
 	return wb.Send(value("Parameter.Inverter.AcALim", fmt.Sprintf("%.2f", current)))
 }
 
+var _ api.MeterEnergy = (*Smaevcharger)(nil)
+
+// TotalEnergy implements the api.MeterEnergy interface
+func (wb *Smaevcharger) TotalEnergy() (float64, error) {
+	val, err := wb.getMeasurement("Measurement.Metering.GridMs.TotWhIn")
+	return val / 1e3, err
+}
+
 var _ api.Meter = (*Smaevcharger)(nil)
 
 // CurrentPower implements the api.Meter interface