316 lines
9 KiB
Go
316 lines
9 KiB
Go
package charger
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// LICENSE
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// Copyright (c) evcc.io (andig, naltatis, premultiply)
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// This module is NOT covered by the MIT license. All rights reserved.
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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import (
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"context"
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"encoding/binary"
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"fmt"
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"math"
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"time"
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"github.com/evcc-io/evcc/api"
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"github.com/evcc-io/evcc/util"
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"github.com/evcc-io/evcc/util/modbus"
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"github.com/evcc-io/evcc/util/sponsor"
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"github.com/volkszaehler/mbmd/encoding"
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)
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// MennekesCompact is an api.Charger implementation
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type MennekesCompact struct {
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log *util.Logger
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conn *modbus.Connection
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}
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const (
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mennekesRegModbusVersion = 0x0000 // uint16
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mennekesRegFirmwareVersion = 0x0001 // ascii[16]
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mennekesRegSerialNumber = 0x0013 // ascii[16]
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mennekesRegEvseState = 0x0100 // uint16
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mennekesRegAuthorizationStatus = 0x0101 // uint16
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mennekesRegCpState = 0x0108 // uint16
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mennekesRegChargingCurrentEM = 0x0302 // float32 [Heartbeat]
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mennekesRegPhaseOptionsHW = 0x030C // uint16
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mennekesRegGridPhasesConnected = 0x0311 // uint16
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mennekesRegAuthorization = 0x0312 // uint16
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mennekesRegCurrents = 0x0500 // float32[3]
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mennekesRegVoltages = 0x0506 // float32[3]
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mennekesRegPower = 0x0512 // float32
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mennekesRegChargedEnergySession = 0x0B02 // float32
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mennekesRegDurationSession = 0x0B04 // uint32
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mennekesRegHeartbeat = 0x0D00 // uint16 [Heartbeat]
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mennekesRegRequestedPhases = 0x0D04 // uint16
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mennekesRegChargingReleaseEM = 0x0D05 // uint16 [Heartbeat]
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mennekesRegChargedEnergyTotal = 0x1000 // float32
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mennekesAllowed = 1
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mennekesHeartbeatInterval = 5 * time.Second
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mennekesHeartbeatToken = 0x55AA // 21930
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)
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func init() {
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registry.AddCtx("mennekes-compact", NewMennekesCompactFromConfig)
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}
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// NewMennekesCompactFromConfig creates a new Mennekes ModbusTCP charger
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func NewMennekesCompactFromConfig(ctx context.Context, other map[string]interface{}) (api.Charger, error) {
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cc := struct {
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modbus.Settings `mapstructure:",squash"`
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Timeout time.Duration
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}{
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Settings: modbus.Settings{
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Baudrate: 57600,
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Comset: "8N2",
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ID: 50,
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},
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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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return NewMennekesCompact(ctx, cc.URI, cc.Device, cc.Comset, cc.Baudrate, cc.Settings.Protocol(), cc.ID, cc.Timeout)
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}
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//go:generate go tool decorate -f decorateMennekesCompact -b *MennekesCompact -r api.Charger -t "api.PhaseSwitcher,Phases1p3p,func(int) error"
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// NewMennekesCompact creates Mennekes charger
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func NewMennekesCompact(ctx context.Context, uri, device, comset string, baudrate int, proto modbus.Protocol, slaveID uint8, timeout time.Duration) (api.Charger, error) {
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conn, err := modbus.NewConnection(ctx, uri, device, comset, baudrate, proto, slaveID)
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if err != nil {
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return nil, err
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}
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if timeout > 0 {
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conn.Timeout(timeout)
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}
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if !sponsor.IsAuthorized() {
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return nil, api.ErrSponsorRequired
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}
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log := util.NewLogger("mennekes")
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conn.Logger(log.TRACE)
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wb := &MennekesCompact{
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log: log,
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conn: conn,
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}
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// check phase switching support
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var phasesS func(int) error
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if b, err := wb.conn.ReadHoldingRegisters(mennekesRegPhaseOptionsHW, 1); err == nil && encoding.Uint16(b) == 2 {
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phasesS = wb.phases1p3p
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}
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// failsafe
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go wb.heartbeat(ctx, mennekesHeartbeatInterval)
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return decorateMennekesCompact(wb, phasesS), nil
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}
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func (wb *MennekesCompact) heartbeat(ctx context.Context, timeout time.Duration) {
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for tick := time.Tick(timeout); ; {
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select {
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case <-tick:
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case <-ctx.Done():
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return
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}
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if _, err := wb.conn.WriteSingleRegister(mennekesRegHeartbeat, mennekesHeartbeatToken); err != nil {
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wb.log.ERROR.Println("heartbeat:", err)
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}
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}
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}
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// Status implements the api.Charger interface
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func (wb *MennekesCompact) Status() (api.ChargeStatus, error) {
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b, err := wb.conn.ReadHoldingRegisters(mennekesRegEvseState, 1)
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if err != nil {
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return api.StatusNone, err
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}
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switch status := encoding.Uint16(b); status {
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case 1:
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return api.StatusA, nil
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case 2, 3, 4:
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return api.StatusB, nil
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case 5:
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return api.StatusC, nil
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case 6:
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b := make([]byte, 4)
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if _, err := wb.conn.WriteMultipleRegisters(mennekesRegChargingCurrentEM, 2, b); err != nil {
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return api.StatusNone, err
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}
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if _, err := wb.conn.WriteSingleRegister(mennekesRegChargingReleaseEM, mennekesAllowed); err != nil {
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return api.StatusNone, err
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}
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return api.StatusNone, nil
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default:
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return api.StatusNone, fmt.Errorf("invalid status: %d", status)
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}
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}
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// Enabled implements the api.Charger interface
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func (wb *MennekesCompact) Enabled() (bool, error) {
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b, err := wb.conn.ReadHoldingRegisters(mennekesRegChargingReleaseEM, 1)
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if err != nil {
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return false, err
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}
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u := encoding.Uint16(b)
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return u == mennekesAllowed, nil
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}
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// Enable implements the api.Charger interface
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func (wb *MennekesCompact) Enable(enable bool) error {
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var u uint16
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if enable {
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u = mennekesAllowed
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}
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_, err := wb.conn.WriteSingleRegister(mennekesRegChargingReleaseEM, u)
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return err
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}
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// MaxCurrent implements the api.Charger interface
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func (wb *MennekesCompact) MaxCurrent(current int64) error {
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return wb.MaxCurrentMillis(float64(current))
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}
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var _ api.ChargerEx = (*MennekesCompact)(nil)
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// MaxCurrentMillis implements the api.ChargerEx interface
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func (wb *MennekesCompact) MaxCurrentMillis(current float64) error {
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b := make([]byte, 4)
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binary.BigEndian.PutUint32(b, math.Float32bits(float32(current)))
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_, err := wb.conn.WriteMultipleRegisters(mennekesRegChargingCurrentEM, 2, b)
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return err
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}
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// CurrentPower implements the api.Meter interface
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func (wb *MennekesCompact) CurrentPower() (float64, error) {
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b, err := wb.conn.ReadHoldingRegisters(mennekesRegPower, 2)
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if err != nil {
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return 0, err
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}
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return float64(encoding.Float32(b)), nil
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}
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var _ api.MeterEnergy = (*MennekesCompact)(nil)
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// TotalEnergy implements the api.MeterEnergy interface
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func (wb *MennekesCompact) TotalEnergy() (float64, error) {
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b, err := wb.conn.ReadHoldingRegisters(mennekesRegChargedEnergyTotal, 2)
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if err != nil {
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return 0, err
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}
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return float64(encoding.Float32(b)), nil
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}
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var _ api.PhaseCurrents = (*MennekesCompact)(nil)
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// Currents implements the api.PhaseCurrents interface
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func (wb *MennekesCompact) Currents() (float64, float64, float64, error) {
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return wb.getPhaseValues(mennekesRegCurrents)
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}
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var _ api.PhaseVoltages = (*MennekesCompact)(nil)
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// Voltages implements the api.PhaseVoltages interface
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func (wb *MennekesCompact) Voltages() (float64, float64, float64, error) {
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return wb.getPhaseValues(mennekesRegVoltages)
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}
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// getPhaseValues returns 3 sequential phase values
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func (wb *MennekesCompact) getPhaseValues(reg uint16) (float64, float64, float64, error) {
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b, err := wb.conn.ReadHoldingRegisters(reg, 6)
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if err != nil {
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return 0, 0, 0, err
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}
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var res [3]float64
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for i := range res {
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res[i] = float64(encoding.Float32(b[4*i:]))
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}
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return res[0], res[1], res[2], nil
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}
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/*
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var _ api.ChargeRater = (*MennekesCompact)(nil)
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// ChargedEnergy implements the api.MeterEnergy interface
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func (wb *MennekesCompact) ChargedEnergy() (float64, error) {
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b, err := wb.conn.ReadHoldingRegisters(mennekesRegChargedEnergySession, 2)
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if err != nil {
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return 0, err
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}
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return float64(encoding.Float32(b)), err
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}
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var _ api.ChargeTimer = (*MennekesCompact)(nil)
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// ChargeDuration implements the api.ChargeTimer interface
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func (wb *MennekesCompact) ChargeDuration() (time.Duration, error) {
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b, err := wb.conn.ReadHoldingRegisters(mennekesRegDurationSession, 2)
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if err != nil {
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return 0, err
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}
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return time.Duration(encoding.Uint32(b)) * time.Second, nil
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}
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*/
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// Phases1p3p implements the api.PhaseSwitcher interface
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func (wb *MennekesCompact) phases1p3p(phases int) error {
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var u uint16
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if phases == 1 {
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u = 1
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}
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// temporarily disable charger during phase switching
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if en, err := wb.Enabled(); err == nil && en {
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if err := wb.Enable(false); err != nil {
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return err
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}
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defer wb.Enable(true)
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}
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_, err := wb.conn.WriteSingleRegister(mennekesRegRequestedPhases, u)
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return err
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}
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var _ api.Diagnosis = (*MennekesCompact)(nil)
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// Diagnose implements the api.Diagnosis interface
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func (wb *MennekesCompact) Diagnose() {
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if b, err := wb.conn.ReadHoldingRegisters(mennekesRegModbusVersion, 1); err == nil {
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fmt.Printf("\tModbus: %03X\n", encoding.Uint16(b))
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}
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if b, err := wb.conn.ReadHoldingRegisters(mennekesRegFirmwareVersion, 8); err == nil {
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fmt.Printf("\tFirmware: %s\n", string(b))
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}
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if b, err := wb.conn.ReadHoldingRegisters(mennekesRegSerialNumber, 8); err == nil {
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fmt.Printf("\tSerial: %s\n", string(b))
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}
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}
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