ABL: fix detecting enabled state (evcc-io#1815)

MeirSD · Oct 31, 2021 · 788fc72 · 788fc72
1 parent 7de8729
commit 788fc72
Showing 1 changed file with 4 additions and 3 deletions.
diff --git a/charger/abl.go b/charger/abl.go
@@ -37,6 +37,7 @@ type ABLeMH struct {
 const (
 	ablRegFirmware   = 0x01
 	ablRegStatus     = 0x04
+	ablRegEnabled    = 0x0F
 	ablRegAmpsConfig = 0x14
 	ablRegStatusLong = 0x2E
 
@@ -145,13 +146,13 @@ func (wb *ABLeMH) Status() (api.ChargeStatus, error) {
 
 // Enabled implements the api.Charger interface
 func (wb *ABLeMH) Enabled() (bool, error) {
-	_, _ = wb.conn.ReadHoldingRegisters(ablRegStatusLong, 5)
-	b, err := wb.conn.ReadHoldingRegisters(ablRegStatusLong, 5)
+	_, _ = wb.conn.ReadHoldingRegisters(ablRegEnabled, 5)
+	b, err := wb.conn.ReadHoldingRegisters(ablRegEnabled, 5)
 	if err != nil {
 		return false, err
 	}
 
-	u := binary.BigEndian.Uint16(b[2:]) & 0x0FFF
+	u := binary.BigEndian.Uint16(b[6:]) & 0x0FFF
 	return u != ablAmpsDisabled, nil
 }