Add myStrom switch (#3832)

charger/helper.go

@@ -0,0 +1,30 @@
+package charger
+
+import "github.com/evcc-io/evcc/api"
+
+// switchStatus calculates a generic switches status
+func switchStatus(
+	enabled func() (bool, error),
+	currentPower func() (float64, error),
+	standbypower float64,
+) (api.ChargeStatus, error) {
+	res := api.StatusB
+
+	// static mode
+	if standbypower < 0 {
+		on, err := enabled()
+		if on {
+			res = api.StatusC
+		}
+
+		return res, err
+	}
+
+	// standby power mode
+	power, err := currentPower()
+	if power > standbypower {
+		res = api.StatusC
+	}
+
+	return res, err
+}

charger/mystrom.go

@@ -0,0 +1,78 @@
+package charger
+
+import (
+	"fmt"
+	"time"
+
+	"github.com/evcc-io/evcc/api"
+	"github.com/evcc-io/evcc/meter/mystrom"
+	"github.com/evcc-io/evcc/provider"
+	"github.com/evcc-io/evcc/util"
+)
+
+// myStrom switch:
+// https://api.mystrom.ch/#fbb2c698-e37a-4584-9324-3f8b2f615fe2
+
+func init() {
+	registry.Add("mystrom", NewMyStromFromConfig)
+}
+
+// MyStrom charger implementation
+type MyStrom struct {
+	*mystrom.Connection
+	standbypower float64
+	cache        time.Duration
+	reportG      func() (mystrom.Report, error)
+}
+
+// NewMyStromFromConfig creates a myStrom charger from generic config
+func NewMyStromFromConfig(other map[string]interface{}) (api.Charger, error) {
+	cc := struct {
+		URI          string
+		StandbyPower float64
+		Cache        time.Duration
+	}{
+		Cache: time.Second,
+	}
+
+	if err := util.DecodeOther(other, &cc); err != nil {
+		return nil, err
+	}
+
+	c := &MyStrom{
+		Connection:   mystrom.NewConnection(cc.URI),
+		standbypower: cc.StandbyPower,
+		cache:        cc.Cache,
+	}
+
+	c.reportG = provider.Cached(c.Report, c.cache)
+
+	return c, nil
+}
+
+var _ api.Meter = (*MyStrom)(nil)
+
+// Status implements the api.Charger interface
+func (c *MyStrom) Status() (api.ChargeStatus, error) {
+	return switchStatus(c.Enabled, c.CurrentPower, c.standbypower)
+}
+
+// Enabled implements the api.Charger interface
+func (c *MyStrom) Enabled() (bool, error) {
+	res, err := c.reportG()
+	return res.Relay, err
+}
+
+// Enable implements the api.Charger interface
+func (c *MyStrom) Enable(enable bool) error {
+	// reset cache
+	c.reportG = provider.Cached(c.Report, c.cache)
+
+	onoff := map[bool]int{false: 0, true: 1}
+	return c.Request(fmt.Sprintf("relay/state=%d", onoff[enable]))
+}
+
+// MaxCurrent implements the api.Charger interface
+func (c *MyStrom) MaxCurrent(current int64) error {
+	return nil
+}

meter/mystrom.go

@@ -0,0 +1,27 @@
+package meter
+
+import (
+	"github.com/evcc-io/evcc/api"
+	"github.com/evcc-io/evcc/meter/mystrom"
+	"github.com/evcc-io/evcc/util"
+)
+
+// myStrom switch:
+// https://api.mystrom.ch/#fbb2c698-e37a-4584-9324-3f8b2f615fe2
+
+func init() {
+	registry.Add("mystrom", NewMyStromFromConfig)
+}
+
+// NewMyStromFromConfig creates a myStrom meter from generic config
+func NewMyStromFromConfig(other map[string]interface{}) (api.Meter, error) {
+	var cc struct {
+		URI string
+	}
+
+	if err := util.DecodeOther(other, &cc); err != nil {
+		return nil, err
+	}
+
+	return mystrom.NewConnection(cc.URI), nil
+}

meter/mystrom/mystrom.go

@@ -0,0 +1,46 @@
+package mystrom
+
+import (
+	"fmt"
+
+	"github.com/evcc-io/evcc/api"
+	"github.com/evcc-io/evcc/util"
+	"github.com/evcc-io/evcc/util/request"
+)
+
+type Report struct {
+	Power float64
+	Relay bool
+}
+
+type Connection struct {
+	*request.Helper
+	uri string
+}
+
+func NewConnection(uri string) *Connection {
+	return &Connection{
+		uri:    uri,
+		Helper: request.NewHelper(util.NewLogger("mystrom")),
+	}
+}
+
+func (c *Connection) Request(path string) error {
+	uri := fmt.Sprintf("%s/%s", c.uri, path)
+	return c.GetJSON(uri, nil)
+}
+
+func (c *Connection) Report() (Report, error) {
+	var res Report
+	uri := fmt.Sprintf("%s/report", c.uri)
+	err := c.GetJSON(uri, &res)
+	return res, err
+}
+
+var _ api.Meter = (*Connection)(nil)
+
+// CurrentPower implements the api.Meter interface
+func (c *Connection) CurrentPower() (float64, error) {
+	res, err := c.Report()
+	return res.Power, err
+}

templates/definition/charger/mystrom.yaml

@@ -0,0 +1,16 @@
+template: mystrom
+products:
+  - brand: myStrom
+    description:
+      generic: Switch
+group: switchsockets
+params:
+  - name: usage
+    choice: ["pv", "charge"]
+  - name: host
+  - name: standbypower
+    default: 15
+render: |
+  type: mystrom
+  uri: http://{{ .host }}
+  standbypower: {{ .standbypower }}

templates/definition/meter/mystrom.yaml

@@ -0,0 +1,13 @@
+template: mystrom
+products:
+  - brand: myStrom
+    description:
+      generic: Switch
+group: switchsockets
+params:
+  - name: usage
+    choice: ["pv", "charge"]
+  - name: host
+render: |
+  type: mystrom
+  uri: http://{{ .host }}

templates/docs/charger/mystrom_0.yaml

@@ -0,0 +1,19 @@
+product:
+  brand: myStrom
+  description: Switch
+  group: Schaltbare Steckdosen
+render:
+  - usage: pv
+    default: |
+      type: template
+      template: mystrom
+      usage: pv
+      host: 192.0.2.2 # IP-Adresse oder Hostname
+      standbypower: 15 # Leistung oberhalb des angegebenen Wertes wird als Ladeleistung gewertet # Optional
+  - usage: charge
+    default: |
+      type: template
+      template: mystrom
+      usage: charge
+      host: 192.0.2.2 # IP-Adresse oder Hostname
+      standbypower: 15 # Leistung oberhalb des angegebenen Wertes wird als Ladeleistung gewertet # Optional

templates/docs/meter/mystrom_0.yaml

@@ -0,0 +1,17 @@
+product:
+  brand: myStrom
+  description: Switch
+  group: Schaltbare Steckdosen
+render:
+  - usage: pv
+    default: |
+      type: template
+      template: mystrom
+      usage: pv
+      host: 192.0.2.2 # IP-Adresse oder Hostname
+  - usage: charge
+    default: |
+      type: template
+      template: mystrom
+      usage: charge
+      host: 192.0.2.2 # IP-Adresse oder Hostname

templates/evcc.io/brands.json

@@ -44,6 +44,7 @@
  "SmartPlugs": [
   "AVM",
   "Homematic IP",
+  "myStrom",
   "Shelly",
   "Tasmota",
   "TP-Link"
@@ -62,6 +63,7 @@
   "Janitza",
   "Kostal",
   "LG",
+  "myStrom",
   "OpenEMS",
   "Powerfox",
   "RCT",
@@ -92,6 +94,7 @@
   "Janitza",
   "Kostal",
   "LG",
+  "myStrom",
   "OpenEMS",
   "RCT",
   "SENEC",