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sungrow-charger: wip #13492

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Apr 18, 2024
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sungrow-charger: wip #13492

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76 changes: 60 additions & 16 deletions charger/sungrow.go
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Original file line number Diff line number Diff line change
Expand Up @@ -25,7 +25,7 @@ import (
"github.com/evcc-io/evcc/util"
"github.com/evcc-io/evcc/util/modbus"
"github.com/evcc-io/evcc/util/sponsor"
"github.com/volkszaehler/mbmd/encoding"
"github.com/volkszaehler/mbmd/meters/rs485"
)

// Sungrow charger implementation
Expand All @@ -39,19 +39,21 @@ const (
sgRegEnable = 21210 // uint16
sgRegMaxCurrent = 21202 // uint16 0.01A
sgRegPhases = 21203 // uint16
sgRegWorkingMode = 21262 // uint16
sgRegWorkingMode = 21262 // uint16 [Network=0, Plug&Play=2, EMS=6]

// input
sgRegState = 21316 // uint16
sgRegActivePower = 21307 // uint16 1W
sgRegChargedEnergy = 21309 // uint32 1Wh
sgRegTotalEnergy = 21299 // uint32 1Wh
sgRegPhasesPower = 21224 // uint16
sgRegPhasesState = 21269 // uint16
sgRegTotalEnergy = 21299 // uint32s 1Wh
sgRegActivePower = 21307 // uint32s 1W
sgRegChargedEnergy = 21309 // uint32s 1Wh
sgRegStartMode = 21313 // uint16 [EMS=1, Swiping=2]
sgRegState = 21316 // uint16
)

var (
sgRegCurrents = []uint16{21301, 21303, 21305} // 3x uint16 0.1V
sgRegVoltages = []uint16{21302, 21304, 21306} // 3x uint16 0.1A
sgRegVoltages = []uint16{21301, 21303, 21305} // uint16 0.1V
sgRegCurrents = []uint16{21302, 21304, 21306} // uint16 0.1A
)

func init() {
Expand Down Expand Up @@ -102,7 +104,7 @@ func (wb *Sungrow) getPhaseValues(regs []uint16, divider float64) (float64, floa
return 0, 0, 0, err
}

res[i] = float64(binary.BigEndian.Uint16(b)) / divider
res[i] = rs485.RTUUint16ToFloat64(b) / divider
}

return res[0], res[1], res[2], nil
Expand All @@ -115,10 +117,9 @@ func (wb *Sungrow) Status() (api.ChargeStatus, error) {
return api.StatusNone, err
}

switch s := encoding.Uint16(b); s {
switch s := binary.BigEndian.Uint16(b); s {
case
1, // "Available"
8: // "Disabled"
1: // "Idle"
return api.StatusA, nil
case
2, // "Standby"
Expand All @@ -131,6 +132,7 @@ func (wb *Sungrow) Status() (api.ChargeStatus, error) {
return api.StatusC, nil
case
7, // "Reserved"
8, // "Disabled"
9: // "Faulted"
return api.StatusF, nil
default:
Expand All @@ -145,7 +147,7 @@ func (wb *Sungrow) Enabled() (bool, error) {
return false, err
}

return encoding.Uint16(b) == 1, nil
return binary.BigEndian.Uint16(b) == 1, nil
}

// Enable implements the api.Charger interface
Expand Down Expand Up @@ -187,7 +189,7 @@ func (wb *Sungrow) CurrentPower() (float64, error) {
return 0, err
}

return float64(binary.BigEndian.Uint32(b)) / 1e3, err
return rs485.RTUUint32ToFloat64Swapped(b), err
}

var _ api.PhaseCurrents = (*Sungrow)(nil)
Expand All @@ -201,7 +203,19 @@ var _ api.PhaseVoltages = (*Sungrow)(nil)

// Voltages implements the api.PhaseVoltages interface
func (wb *Sungrow) Voltages() (float64, float64, float64, error) {
return wb.getPhaseValues(sgRegVoltages, 1)
return wb.getPhaseValues(sgRegVoltages, 10)
}

var _ api.ChargeRater = (*Sungrow)(nil)

// ChargedEnergy implements the api.MeterEnergy interface
func (wb *Sungrow) ChargedEnergy() (float64, error) {
b, err := wb.conn.ReadHoldingRegisters(sgRegChargedEnergy, 2)
if err != nil {
return 0, err
}

return rs485.RTUUint32ToFloat64Swapped(b) / 1e3, err
}

var _ api.MeterEnergy = (*Sungrow)(nil)
Expand All @@ -213,7 +227,7 @@ func (wb *Sungrow) TotalEnergy() (float64, error) {
return 0, err
}

return float64(binary.BigEndian.Uint32(b)) / 1e3, err
return rs485.RTUUint32ToFloat64Swapped(b) / 1e3, err
}

var _ api.PhaseSwitcher = (*Sungrow)(nil)
Expand All @@ -230,3 +244,33 @@ func (wb *Sungrow) Phases1p3p(phases int) error {

return err
}

var _ api.Diagnosis = (*Sungrow)(nil)

// Diagnose implements the api.Diagnosis interface
func (wb *Sungrow) Diagnose() {
if b, err := wb.conn.ReadHoldingRegisters(sgRegMaxCurrent, 1); err == nil {
fmt.Printf("\tMaxCurrent:\t%d\n", binary.BigEndian.Uint16(b))
}
if b, err := wb.conn.ReadHoldingRegisters(sgRegPhases, 1); err == nil {
fmt.Printf("\tPhases:\t%d\n", binary.BigEndian.Uint16(b))
}
if b, err := wb.conn.ReadHoldingRegisters(sgRegEnable, 1); err == nil {
fmt.Printf("\tEnable:\t%d\n", binary.BigEndian.Uint16(b))
}
if b, err := wb.conn.ReadHoldingRegisters(sgRegWorkingMode, 1); err == nil {
fmt.Printf("\tWorkingMode:\t%d\n", binary.BigEndian.Uint16(b))
}
if b, err := wb.conn.ReadInputRegisters(sgRegPhasesPower, 1); err == nil {
fmt.Printf("\tPhasesPower:\t%d\n", binary.BigEndian.Uint16(b))
}
if b, err := wb.conn.ReadInputRegisters(sgRegPhasesState, 1); err == nil {
fmt.Printf("\tPhasesState:\t%d\n", binary.BigEndian.Uint16(b))
}
if b, err := wb.conn.ReadInputRegisters(sgRegStartMode, 1); err == nil {
fmt.Printf("\tStartMode:\t%d\n", binary.BigEndian.Uint16(b))
}
if b, err := wb.conn.ReadInputRegisters(sgRegState, 1); err == nil {
fmt.Printf("\tState:\t%d\n", binary.BigEndian.Uint16(b))
}
}
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