90 lines
2.1 KiB
Go
90 lines
2.1 KiB
Go
package meter
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import (
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"math"
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"strings"
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"time"
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"github.com/evcc-io/evcc/api"
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"github.com/evcc-io/evcc/api/implement"
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"github.com/evcc-io/evcc/meter/shelly"
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"github.com/evcc-io/evcc/util"
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)
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// Shelly meter considering usage
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type Shelly struct {
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implement.Caps
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conn *shelly.Connection
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usage string
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}
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// Shelly meter implementation
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func init() {
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registry.Add("shelly", NewShellyFromConfig)
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}
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// NewShellyFromConfig creates a Shelly charger from generic config
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func NewShellyFromConfig(other map[string]any) (api.Meter, error) {
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cc := struct {
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URI string
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User string
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Password string
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Channel int
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Usage string
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Cache time.Duration
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}{
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Cache: time.Second,
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}
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if err := util.DecodeOther(other, &cc); err != nil {
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return nil, err
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}
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c, err := NewShelly(cc.URI, cc.User, cc.Password, strings.ToLower(cc.Usage), cc.Channel, cc.Cache)
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if err != nil {
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return nil, err
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}
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// Three-phase Shelly energy meters count each phase separately (non-balanced),
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// making their totals unsuitable for bidirectional grid metering.
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if !(c.usage == "grid" && c.conn.IsThreePhase()) {
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implement.Has(c, implement.MeterEnergy(c.conn.TotalEnergy))
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implement.Has(c, implement.MeterReturnEnergy(c.conn.ReturnEnergy))
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}
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if phases, ok := c.conn.Generation.(shelly.Phases); ok {
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implement.Has(c, implement.PhaseVoltages(phases.Voltages))
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implement.Has(c, implement.PhaseCurrents(phases.Currents))
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implement.Has(c, implement.PhasePowers(phases.Powers))
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}
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return c, nil
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}
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// NewShelly creates Shelly meter
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func NewShelly(uri, user, password, usage string, channel int, cache time.Duration) (*Shelly, error) {
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conn, err := shelly.NewConnection(uri, user, password, channel, cache)
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if err != nil {
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return nil, err
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}
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c := &Shelly{
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Caps: implement.New(),
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conn: conn,
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usage: usage,
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}
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return c, nil
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}
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var _ api.Meter = (*Shelly)(nil)
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// CurrentPower implements the api.Meter interface
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func (c *Shelly) CurrentPower() (float64, error) {
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power, err := c.conn.CurrentPower()
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if err != nil {
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return 0, err
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}
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if c.usage == "pv" {
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power = math.Abs(power)
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}
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return power, nil
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}
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