Add Peblar

charger/peblar.go

@@ -0,0 +1,282 @@
+package charger
+
+// LICENSE
+
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+
+// Details on the Peblar modbus server obtained from: https://developer.peblar.com/modbus-api
+
+import (
+	"encoding/binary"
+	"fmt"
+
+	"github.com/evcc-io/evcc/api"
+	"github.com/evcc-io/evcc/util"
+	"github.com/evcc-io/evcc/util/modbus"
+	"github.com/volkszaehler/mbmd/encoding"
+)
+
+// Peblar charger implementation
+type Peblar struct {
+	conn    *modbus.Connection
+	curr    uint32
+	enabled bool
+	phases  uint16
+}
+
+const (
+	// Meter addresses
+	peblarRegEnergyTotal   = 30000
+	peblarRegSessionEnergy = 30004
+	peblarRegPowerPhase1   = 30008
+	peblarRegPowerPhase2   = 30010
+	peblarRegPowerPhase3   = 30012
+	peblarRegPowerTotal    = 30014
+	peblarRegVoltages      = 30016
+	peblarRegCurrents      = 30022
+
+	// Config addresses
+	peblarRegSerialNumber  = 30050
+	peblarRegProductNumber = 30062
+	peblarRegFwIdentifier  = 30074
+	peblarRegPhaseCount    = 30092
+	peblarRegIndepRelay    = 30093
+
+	// Control addresses
+	peblarRegCurrentLimitSource = 30112
+	peblarRegCurrentLimitActual = 30113
+	peblarRegModbusCurrentLimit = 40000
+	peblarRegForce1Phase        = 40002
+
+	// Diagnostic addresses
+	peblarRegCpState = 30110
+)
+
+func init() {
+	registry.Add("peblar", NewPeblarFromConfig)
+}
+
+//go:generate go run ../cmd/tools/decorate.go -f decoratePeblar -b *Peblar -r api.Charger -t "api.PhaseSwitcher,Phases1p3p,func(int) error" -t "api.PhaseGetter,GetPhases,func() (int, error)"
+
+// NewPeblarFromConfig creates a Peblar charger from generic config
+func NewPeblarFromConfig(other map[string]interface{}) (api.Charger, error) {
+	cc := modbus.TcpSettings{
+		ID: 255,
+	}
+
+	if err := util.DecodeOther(other, &cc); err != nil {
+		return nil, err
+	}
+
+	return NewPeblar(cc.URI, cc.ID)
+}
+
+// NewPeblar creates Peblar charger
+func NewPeblar(uri string, id uint8) (api.Charger, error) {
+	conn, err := modbus.NewConnection(uri, "", "", 0, modbus.Tcp, id)
+	if err != nil {
+		return nil, err
+	}
+
+	// Register contains the physically connected phases
+	b, err := conn.ReadInputRegisters(peblarRegPhaseCount, 1)
+	if err != nil {
+		return nil, err
+	}
+
+	wb := &Peblar{
+		conn:   conn,
+		curr:   6000,                       // assume min current
+		phases: binary.BigEndian.Uint16(b), // required for retrieving the right amount of voltage/current registers
+	}
+
+	b, err = conn.ReadInputRegisters(peblarRegIndepRelay, 1)
+	if err != nil {
+		return nil, err
+	}
+
+	var phasesS func(int) error
+	var phasesG func() (int, error)
+
+	if binary.BigEndian.Uint16(b) == 1 {
+		phasesS = wb.phases1p3p
+		phasesG = wb.getPhases
+	}
+
+	return decoratePeblar(wb, phasesS, phasesG), err
+}
+
+// Status implements the api.Charger interface
+func (wb *Peblar) Status() (api.ChargeStatus, error) {
+	b, err := wb.conn.ReadInputRegisters(peblarRegCpState, 1)
+	if err != nil {
+		return api.StatusNone, err
+	}
+
+	switch s := rune(encoding.Uint16(b)); s {
+	case 'A', 'B', 'C':
+		return api.ChargeStatus(s), nil
+	default:
+		return api.StatusNone, fmt.Errorf("invalid status: %d", s)
+	}
+}
+
+// Enabled implements the api.Charger interface
+func (wb *Peblar) Enabled() (bool, error) {
+	return verifyEnabled(wb, wb.enabled)
+}
+
+// Enable implements the api.Charger interface
+func (wb *Peblar) Enable(enable bool) error {
+	var current uint32
+	if enable {
+		current = wb.curr
+	}
+
+	err := wb.setCurrent(current)
+	if err == nil {
+		wb.enabled = enable
+	}
+
+	return err
+}
+
+// setCurrent writes the current limit in mA
+func (wb *Peblar) setCurrent(current uint32) error {
+	b := make([]byte, 4)
+	binary.BigEndian.PutUint32(b, current)
+
+	_, err := wb.conn.WriteMultipleRegisters(peblarRegModbusCurrentLimit, 2, b)
+	return err
+}
+
+// MaxCurrent implements the api.Charger interface
+func (wb *Peblar) MaxCurrent(current int64) error {
+	return wb.MaxCurrentMillis(float64(current))
+}
+
+var _ api.ChargerEx = (*Peblar)(nil)
+
+// MaxCurrent implements the api.ChargerEx interface
+func (wb *Peblar) MaxCurrentMillis(current float64) error {
+	if current < 6 {
+		return fmt.Errorf("invalid current %.1f", current)
+	}
+
+	err := wb.setCurrent(wb.curr)
+	if err == nil {
+		wb.curr = uint32(current * 1e3)
+	}
+
+	return err
+}
+
+var _ api.Meter = (*Peblar)(nil)
+
+// CurrentPower implements the api.Meter interface
+func (wb *Peblar) CurrentPower() (float64, error) {
+	b, err := wb.conn.ReadInputRegisters(peblarRegPowerTotal, 2)
+	if err != nil {
+		return 0, err
+	}
+
+	return float64(binary.BigEndian.Uint32(b)), err
+}
+
+var _ api.ChargeRater = (*Peblar)(nil)
+
+// ChargedEnergy implements the api.MeterEnergy interface
+func (wb *Peblar) ChargedEnergy() (float64, error) {
+	b, err := wb.conn.ReadInputRegisters(peblarRegSessionEnergy, 4)
+	if err != nil {
+		return 0, err
+	}
+
+	return float64(encoding.Int64(b)) / 1e3, err
+}
+
+// TotalEnergy implements the api.MeterEnergy interface
+func (wb *Peblar) TotalEnergy() (float64, error) {
+	b, err := wb.conn.ReadInputRegisters(peblarRegEnergyTotal, 4)
+	if err != nil {
+		return 0, err
+	}
+
+	return float64(encoding.Int64(b)) / 1e3, nil
+}
+
+// getPhaseValues returns 1..3 sequential register values
+func (wb *Peblar) getPhaseValues(reg uint16, divider float64) (float64, float64, float64, error) {
+	b, err := wb.conn.ReadInputRegisters(reg, wb.phases*2)
+	if err != nil {
+		return 0, 0, 0, err
+	}
+
+	var res [3]float64
+	for i := 0; i < int(wb.phases); i++ {
+		res[i] = float64(binary.BigEndian.Uint32(b[4*i:])) / divider
+	}
+
+	return res[0], res[1], res[2], nil
+}
+
+var _ api.PhaseCurrents = (*Peblar)(nil)
+
+// Currents implements the api.PhaseCurrents interface
+func (wb *Peblar) Currents() (float64, float64, float64, error) {
+	return wb.getPhaseValues(peblarRegCurrents, 1e3)
+}
+
+var _ api.PhaseVoltages = (*Peblar)(nil)
+
+// Voltages implements the api.PhaseVoltages interface
+func (wb *Peblar) Voltages() (float64, float64, float64, error) {
+	return wb.getPhaseValues(peblarRegVoltages, 1)
+}
+
+// phases1p3p implements the api.PhaseSwitcher interface via the decorator
+func (wb *Peblar) phases1p3p(phases int) error {
+	var b uint16
+	if phases == 1 {
+		b = 1
+	}
+
+	_, err := wb.conn.WriteSingleRegister(peblarRegForce1Phase, b)
+	return err
+}
+
+// getPhases implements the api.PhaseGetter interface
+func (wb *Peblar) getPhases() (int, error) {
+	b, err := wb.conn.ReadHoldingRegisters(peblarRegForce1Phase, 1)
+	if err != nil {
+		return 0, err
+	}
+
+	phases := 3
+	if binary.BigEndian.Uint16(b) == 1 {
+		phases = 1
+	}
+
+	return phases, nil
+}
+
+var _ api.Diagnosis = (*Peblar)(nil)
+
+// Diagnose implements the api.Diagnosis interface
+func (wb *Peblar) Diagnose() {
+	if b, err := wb.conn.ReadInputRegisters(peblarRegSerialNumber, 12); err == nil {
+		fmt.Printf("\tSN:\t%s\n", b)
+	}
+	if b, err := wb.conn.ReadInputRegisters(peblarRegProductNumber, 12); err == nil {
+		fmt.Printf("\tPN:\t%s\n", b)
+	}
+	if b, err := wb.conn.ReadInputRegisters(peblarRegFwIdentifier, 12); err == nil {
+		fmt.Printf("\tFirmware:\t%s\n", b)
+	}
+}

templates/definition/charger/peblar.yaml

@@ -0,0 +1,16 @@
+template: peblar
+products:
+  - brand: Peblar
+    description:
+      generic: Home, Home Plus, Business
+capabilities: ["1p3p", "mA"]
+requirements:
+  description:
+    de: Peblar-Ladegeräte mit Firmware-Version 1.6 und höher unterstützen Modbus TCP über Port 502. Der Modbus-Server muss über die Weboberfläche des Ladegeräts aktiviert werden. Stellen Sie sicher, dass Smart-Charging-Strategien deaktiviert und auf Standard gesetzt sind.
+    en: Peblar chargers with firmware version 1.6 and onwards support Modbus TCP via port 502. The Modbus server needs to be enabled via the charger web interface. Ensure that smart charging strategies are disabled and set to Default.
+params:
+  - name: modbus
+    choice: ["tcpip"]
+render: |
+  type: peblar
+  {{- include "modbus" . }}