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Add E3DC native implementation (evcc-io#13413)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,301 @@ | ||
| package meter | ||
|
|
||
| import ( | ||
| "errors" | ||
| "net" | ||
| "slices" | ||
| "strconv" | ||
| "sync" | ||
| "time" | ||
|
|
||
| "github.com/evcc-io/evcc/api" | ||
| "github.com/evcc-io/evcc/util" | ||
| "github.com/evcc-io/evcc/util/request" | ||
| "github.com/evcc-io/evcc/util/templates" | ||
| "github.com/samber/lo" | ||
| "github.com/sirupsen/logrus" | ||
| "github.com/spali/go-rscp/rscp" | ||
| "github.com/spf13/cast" | ||
| ) | ||
|
|
||
| type E3dc struct { | ||
| capacity float64 | ||
| dischargeLimit uint32 | ||
| usage templates.Usage // TODO check if we really want to depend on templates | ||
| conn *rscp.Client | ||
| } | ||
|
|
||
| func init() { | ||
| registry.Add("e3dc-rscp", NewE3dcFromConfig) | ||
| } | ||
|
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| //go:generate go run ../cmd/tools/decorate.go -f decorateE3dc -b *E3dc -r api.Meter -t "api.BatteryCapacity,Capacity,func() float64" -t "api.Battery,Soc,func() (float64, error)" -t "api.BatteryController,SetBatteryMode,func(api.BatteryMode) error" | ||
|
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| func NewE3dcFromConfig(other map[string]interface{}) (api.Meter, error) { | ||
| cc := struct { | ||
| Usage templates.Usage | ||
| Uri string | ||
| User string | ||
| Password string | ||
| Key string | ||
| Battery uint16 // battery id | ||
| DischargeLimit uint32 | ||
| Timeout time.Duration | ||
| }{ | ||
| Timeout: request.Timeout, | ||
| } | ||
|
|
||
| if err := util.DecodeOther(other, &cc); err != nil { | ||
| return nil, err | ||
| } | ||
|
|
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| host, port_, err := net.SplitHostPort(util.DefaultPort(cc.Uri, 5033)) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| port, _ := strconv.Atoi(port_) | ||
|
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| cfg := rscp.ClientConfig{ | ||
| Address: host, | ||
| Port: uint16(port), | ||
| Username: cc.User, | ||
| Password: cc.Password, | ||
| Key: cc.Key, | ||
| ConnectionTimeout: cc.Timeout, | ||
| SendTimeout: cc.Timeout, | ||
| ReceiveTimeout: cc.Timeout, | ||
| } | ||
|
|
||
| return NewE3dc(cfg, cc.Usage, cc.Battery, cc.DischargeLimit) | ||
| } | ||
|
|
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| var e3dcOnce sync.Once | ||
|
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| func NewE3dc(cfg rscp.ClientConfig, usage templates.Usage, batteryId uint16, dischargeLimit uint32) (api.Meter, error) { | ||
| e3dcOnce.Do(func() { | ||
| log := util.NewLogger("e3dc") | ||
| rscp.Log.SetLevel(logrus.DebugLevel) | ||
| rscp.Log.SetOutput(log.TRACE.Writer()) | ||
| }) | ||
|
|
||
| conn, err := rscp.NewClient(cfg) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| m := &E3dc{ | ||
| usage: usage, | ||
| conn: conn, | ||
| dischargeLimit: dischargeLimit, | ||
| } | ||
|
|
||
| // decorate api.BatterySoc | ||
| var ( | ||
| batterySoc func() (float64, error) | ||
| batteryCapacity func() float64 | ||
| batteryMode func(api.BatteryMode) error | ||
| ) | ||
|
|
||
| if usage == templates.UsageBattery { | ||
| batterySoc = m.batterySoc | ||
| batteryCapacity = m.batteryCapacity | ||
| batteryMode = m.setBatteryMode | ||
|
|
||
| res, err := m.conn.Send(rscp.Message{ | ||
| Tag: rscp.BAT_REQ_DATA, | ||
| DataType: rscp.Container, | ||
| Value: []rscp.Message{ | ||
| { | ||
| Tag: rscp.BAT_INDEX, | ||
| DataType: rscp.UInt16, | ||
| Value: batteryId, | ||
| }, | ||
| { | ||
| Tag: rscp.BAT_REQ_SPECIFICATION, | ||
| DataType: rscp.None, | ||
| }, | ||
| }, | ||
| }) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| batSpec, err := rscpContains(res, rscp.BAT_SPECIFICATION) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| batCap, err := rscpContains(&batSpec, rscp.BAT_SPECIFIED_CAPACITY) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| cap, err := rscpValue(batCap, cast.ToFloat64E) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
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| m.capacity = cap / 1e3 | ||
| } | ||
|
|
||
| return decorateE3dc(m, batteryCapacity, batterySoc, batteryMode), nil | ||
| } | ||
|
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| func (m *E3dc) CurrentPower() (float64, error) { | ||
| switch m.usage { | ||
| case templates.UsageGrid: | ||
| res, err := m.conn.Send(*rscp.NewMessage(rscp.EMS_REQ_POWER_GRID, nil)) | ||
| if err != nil { | ||
| return 0, err | ||
| } | ||
| return rscpValue(*res, cast.ToFloat64E) | ||
|
|
||
| case templates.UsagePV: | ||
| res, err := m.conn.SendMultiple([]rscp.Message{ | ||
| *rscp.NewMessage(rscp.EMS_REQ_POWER_PV, nil), | ||
| *rscp.NewMessage(rscp.EMS_REQ_POWER_ADD, nil), | ||
| }) | ||
| if err != nil { | ||
| return 0, err | ||
| } | ||
|
|
||
| values, err := rscpValues(res, cast.ToFloat64E) | ||
| if err != nil { | ||
| return 0, err | ||
| } | ||
|
|
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| return lo.Sum(values), nil | ||
|
|
||
| case templates.UsageBattery: | ||
| res, err := m.conn.Send(*rscp.NewMessage(rscp.EMS_REQ_POWER_BAT, nil)) | ||
| if err != nil { | ||
| return 0, err | ||
| } | ||
| pwr, err := rscpValue(*res, cast.ToFloat64E) | ||
| if err != nil { | ||
| return 0, err | ||
| } | ||
|
|
||
| return -pwr, nil | ||
|
|
||
| default: | ||
| return 0, api.ErrNotAvailable | ||
| } | ||
| } | ||
|
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||
| func (m *E3dc) batteryCapacity() float64 { | ||
| return m.capacity | ||
| } | ||
|
|
||
| func (m *E3dc) batterySoc() (float64, error) { | ||
| res, err := m.conn.Send(*rscp.NewMessage(rscp.EMS_REQ_BAT_SOC, nil)) | ||
| if err != nil { | ||
| return 0, err | ||
| } | ||
| return rscpValue(*res, cast.ToFloat64E) | ||
| } | ||
|
|
||
| func (m *E3dc) setBatteryMode(mode api.BatteryMode) error { | ||
| var ( | ||
| res []rscp.Message | ||
| err error | ||
| ) | ||
|
|
||
| switch mode { | ||
| case api.BatteryNormal: | ||
| res, err = m.conn.SendMultiple([]rscp.Message{ | ||
| e3dcDischargeBatteryLimit(false, 0), | ||
| e3dcBatteryCharge(0), | ||
| }) | ||
|
|
||
| case api.BatteryHold: | ||
| res, err = m.conn.SendMultiple([]rscp.Message{ | ||
| e3dcDischargeBatteryLimit(true, m.dischargeLimit), | ||
| e3dcBatteryCharge(0), | ||
| }) | ||
|
|
||
| case api.BatteryCharge: | ||
| res, err = m.conn.SendMultiple([]rscp.Message{ | ||
| e3dcDischargeBatteryLimit(false, 0), | ||
| e3dcBatteryCharge(10000), // 10kWh | ||
| }) | ||
|
|
||
| default: | ||
| return api.ErrNotAvailable | ||
| } | ||
|
|
||
| if err == nil { | ||
| err = rscpError(res...) | ||
| } | ||
| return err | ||
| } | ||
|
|
||
| func e3dcDischargeBatteryLimit(active bool, limit uint32) rscp.Message { | ||
| contents := []rscp.Message{ | ||
| *rscp.NewMessage(rscp.EMS_POWER_LIMITS_USED, active), | ||
| } | ||
|
|
||
| if active { | ||
| contents = append(contents, *rscp.NewMessage(rscp.EMS_MAX_DISCHARGE_POWER, limit)) | ||
| } | ||
|
|
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| return *rscp.NewMessage(rscp.EMS_REQ_SET_POWER_SETTINGS, contents) | ||
| } | ||
|
|
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| func e3dcBatteryCharge(amount uint32) rscp.Message { | ||
| return *rscp.NewMessage(rscp.EMS_REQ_START_MANUAL_CHARGE, amount) | ||
| } | ||
|
|
||
| func rscpError(msg ...rscp.Message) error { | ||
| var errs []error | ||
| for _, m := range msg { | ||
| if m.DataType == rscp.Error { | ||
| errs = append(errs, errors.New(rscp.RscpError(cast.ToUint32(m.Value)).String())) | ||
| } | ||
| } | ||
| return errors.Join(errs...) | ||
| } | ||
|
|
||
| func rscpContains(msg *rscp.Message, tag rscp.Tag) (rscp.Message, error) { | ||
| var zero rscp.Message | ||
|
|
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| slice, ok := msg.Value.([]rscp.Message) | ||
| if !ok { | ||
| return zero, errors.New("not a slice looking for " + tag.String()) | ||
| } | ||
|
|
||
| idx := slices.IndexFunc(slice, func(m rscp.Message) bool { | ||
| return m.Tag == tag | ||
| }) | ||
| if idx < 0 { | ||
| return zero, errors.New("missing " + tag.String()) | ||
| } | ||
|
|
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| res := slice[idx] | ||
| return res, rscpError(res) | ||
| } | ||
|
|
||
| func rscpValue[T any](msg rscp.Message, fun func(any) (T, error)) (T, error) { | ||
| var zero T | ||
| if err := rscpError(msg); err != nil { | ||
| return zero, err | ||
| } | ||
|
|
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| return fun(msg.Value) | ||
| } | ||
|
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| func rscpValues[T any](msg []rscp.Message, fun func(any) (T, error)) ([]T, error) { | ||
| res := make([]T, 0, len(msg)) | ||
|
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| for _, m := range msg { | ||
| v, err := rscpValue(m, fun) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
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| res = append(res, v) | ||
| } | ||
|
|
||
| return res, nil | ||
| } |
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