Add Pulsares (#10145)

charger/pulsares.go

@@ -0,0 +1,196 @@
+package charger
+
+// LICENSE
+
+// Copyright (c) 2023 premultiply
+
+// This module is NOT covered by the MIT license. All rights reserved.
+
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+
+// 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.
+
+import (
+	"encoding/binary"
+	"fmt"
+	"time"
+
+	"github.com/evcc-io/evcc/api"
+	"github.com/evcc-io/evcc/util"
+	"github.com/evcc-io/evcc/util/modbus"
+)
+
+// Pulsares charger implementation
+type Pulsares struct {
+	log  *util.Logger
+	conn *modbus.Connection
+	curr uint16
+}
+
+const (
+	pulsaresRegStatus  = 0x1f
+	pulsaresRegCurrent = 0x5d
+	pulsaresRegBackup  = 0x61
+)
+
+func init() {
+	registry.Add("pulsares", NewPulsaresFromConfig)
+}
+
+// NewPulsaresFromConfig creates a Pulsares charger from generic config
+func NewPulsaresFromConfig(other map[string]interface{}) (api.Charger, error) {
+	cc := struct {
+		modbus.Settings `mapstructure:",squash"`
+	}{
+		Settings: modbus.Settings{
+			ID: 1,
+		},
+	}
+
+	if err := util.DecodeOther(other, &cc); err != nil {
+		return nil, err
+	}
+
+	return NewPulsares(cc.URI, cc.Device, cc.Comset, cc.Baudrate, modbus.ProtocolFromRTU(cc.RTU), cc.ID)
+}
+
+// NewPulsares creates Pulsares charger
+func NewPulsares(uri, device, comset string, baudrate int, proto modbus.Protocol, slaveID uint8) (api.Charger, error) {
+	conn, err := modbus.NewConnection(uri, device, comset, baudrate, proto, slaveID)
+	if err != nil {
+		return nil, err
+	}
+
+	log := util.NewLogger("pulsares")
+	conn.Logger(log.TRACE)
+
+	wb := &Pulsares{
+		conn: conn,
+		curr: 6000,
+	}
+
+	// get initial state from charger
+	curr, err := wb.getCurrent()
+	if err != nil {
+		return nil, fmt.Errorf("current limit: %w", err)
+	}
+	if curr >= 6000 {
+		wb.curr = curr
+	}
+
+	// get failsafe timeout from charger
+	b, err := wb.conn.ReadHoldingRegisters(pulsaresRegBackup, 1)
+	if err != nil {
+		return nil, fmt.Errorf("failsafe timeout: %w", err)
+	}
+
+	var t time.Duration
+	switch u := binary.BigEndian.Uint16(b); u {
+	case 2:
+		t = 2 * time.Second
+	case 3:
+		t = 5 * time.Second
+	case 4:
+		t = 10 * time.Second
+	case 5:
+		t = 30 * time.Second
+	case 6:
+		t = 60 * time.Second
+	}
+
+	if t > 0 {
+		go wb.heartbeat(t / 2)
+	}
+
+	return wb, err
+}
+
+func (wb *Pulsares) heartbeat(timeout time.Duration) {
+	for range time.Tick(timeout) {
+		if _, err := wb.conn.ReadHoldingRegisters(pulsaresRegBackup, 1); err != nil {
+			wb.log.ERROR.Println("heartbeat:", err)
+		}
+	}
+}
+
+func (wb *Pulsares) setCurrent(current uint16) error {
+	b := make([]byte, 2)
+	binary.BigEndian.PutUint16(b, uint16(current))
+
+	_, err := wb.conn.WriteMultipleRegisters(pulsaresRegCurrent, 1, b)
+
+	return err
+}
+
+func (wb *Pulsares) getCurrent() (uint16, error) {
+	b, err := wb.conn.ReadHoldingRegisters(pulsaresRegCurrent, 1)
+	if err != nil {
+		return 0, err
+	}
+
+	return binary.BigEndian.Uint16(b), nil
+}
+
+// Status implements the api.Charger interface
+func (wb *Pulsares) Status() (api.ChargeStatus, error) {
+	b, err := wb.conn.ReadHoldingRegisters(pulsaresRegStatus, 1)
+	if err != nil {
+		return api.StatusNone, err
+	}
+
+	switch u := binary.BigEndian.Uint16(b); u {
+	case 0:
+		return api.StatusA, nil
+	case 1, 2:
+		return api.StatusB, nil
+	case 3, 4:
+		return api.StatusC, nil
+	default:
+		return api.StatusNone, fmt.Errorf("invalid status: %d", u)
+	}
+}
+
+// Enabled implements the api.Charger interface
+func (wb *Pulsares) Enabled() (bool, error) {
+	curr, err := wb.getCurrent()
+
+	return curr >= 6000, err
+}
+
+// Enable implements the api.Charger interface
+func (wb *Pulsares) Enable(enable bool) error {
+	var curr uint16
+	if enable {
+		curr = wb.curr
+	}
+
+	return wb.setCurrent(curr)
+}
+
+// MaxCurrent implements the api.Charger interface
+func (wb *Pulsares) MaxCurrent(current int64) error {
+	return wb.MaxCurrentMillis(float64(current))
+}
+
+var _ api.ChargerEx = (*Pulsares)(nil)
+
+// MaxCurrent implements the api.ChargerEx interface
+func (wb *Pulsares) MaxCurrentMillis(current float64) error {
+	if current < 6 {
+		return fmt.Errorf("invalid current %.1f", current)
+	}
+
+	err := wb.setCurrent(wb.curr)
+	if err == nil {
+		wb.curr = uint16(current * 1e3)
+	}
+
+	return err
+}

templates/definition/charger/pulsares.yaml

@@ -0,0 +1,13 @@
+template: pulsares
+products:
+  - brand: Pulsares
+    description:
+      generic: SimpleBox
+params:
+  - name: modbus
+    choice: ["rs485"]
+    baudrate: 9600
+    comset: 8N1
+render: |
+  type: pulsares
+  {{- include "modbus" . }}

templates/evcc.io/brands.json

@@ -48,6 +48,7 @@
   "Phoenix Contact",
   "Porsche",
   "Pracht",
+  "Pulsares",
   "Schneider",
   "Schrack",
   "SENEC",