298 lines
7.6 KiB
Go
298 lines
7.6 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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"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/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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)
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// KSE charger implementation
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type KSE struct {
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implement.Caps
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log *util.Logger
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conn *modbus.Connection
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curr uint16
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hasRfid bool
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has1p3p bool
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}
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const (
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kseRegSetMaxCurrent = 0x03 // Externe Stromvorgabe via Bussystem / Ladefreigabe
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kseRegChargeMode = 0x0E // Lademodus
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kseRegVehicleState = 0x10 // State der Statemachine
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kseRegVoltages = 0x11 // Phasenspannung (3)
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kseRegCurrents = 0x14 // Phasenstrom (3)
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kseRegCurrentLoadedEnergy = 0x17 // Zwischen anstecken und abstecken geladene Energie (10 Wh)
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kseRegActualPower = 0x18 // Aktuelle Ladeleistung (W)
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kseRegFirmwareVersion = 0x30 // Firmware Version
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kseRegRFIDinstalled = 0x31 // RFID-Leser vorhanden
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kseRegRelayMode = 0x35 // Umschalten 1 phasiges oder 3 phasiges Laden
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kseRegEnergy = 0x60
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kseRegNFCTransactionID = 0x67 // Tag ID (8 Bytes)
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)
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func init() {
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registry.AddCtx("kse", NewKSEFromConfig)
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}
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// NewKSEFromConfig creates a KSE charger from generic config
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func NewKSEFromConfig(ctx context.Context, other map[string]any) (api.Charger, error) {
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cc := modbus.Settings{
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ID: 100,
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Baudrate: 9600,
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Comset: "8E1",
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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 NewKSE(ctx, cc)
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}
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// NewKSE creates KSE charger
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func NewKSE(ctx context.Context, settings modbus.Settings) (api.Charger, error) {
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conn, err := settings.Connection(ctx, modbus.Rtu)
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if err != nil {
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return nil, err
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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("kse")
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conn.Logger(log.TRACE)
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wb := &KSE{
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Caps: implement.New(),
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log: log,
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conn: conn,
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curr: 6, // assume min current
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}
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// check presence of 1p3p switching
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if b, err := wb.conn.ReadInputRegisters(kseRegFirmwareVersion, 1); err == nil && b[0] >= 0x52 { // >= HW Rev „R”
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wb.has1p3p = true
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implement.Has(wb, implement.PhaseSwitcher(wb.phases1p3p))
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implement.Has(wb, implement.PhaseGetter(wb.getPhases))
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}
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// check presence of rfid
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if b, err := wb.conn.ReadDiscreteInputs(kseRegRFIDinstalled, 1); err == nil && b[0] != 0 {
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wb.hasRfid = true
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implement.Has(wb, implement.Identifier(wb.identify))
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}
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return wb, nil
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}
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// Status implements the api.Charger interface
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func (wb *KSE) Status() (api.ChargeStatus, error) {
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b, err := wb.conn.ReadInputRegisters(kseRegVehicleState, 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 := binary.BigEndian.Uint16(b); status {
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case 0, 1, 3:
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return api.StatusA, nil
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case 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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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 *KSE) Enabled() (bool, error) {
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b, err := wb.conn.ReadHoldingRegisters(kseRegSetMaxCurrent, 1)
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if err != nil {
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return false, err
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}
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cur := binary.BigEndian.Uint16(b)
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return cur != 0, nil
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}
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// Enable implements the api.Charger interface
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func (wb *KSE) Enable(enable bool) error {
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var u uint16
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if enable {
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u = wb.curr
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}
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_, err := wb.conn.WriteSingleRegister(kseRegSetMaxCurrent, 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 *KSE) MaxCurrent(current int64) error {
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if current < 6 {
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return fmt.Errorf("invalid current %d", current)
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}
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_, err := wb.conn.WriteSingleRegister(kseRegSetMaxCurrent, uint16(current))
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if err == nil {
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wb.curr = uint16(current)
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}
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return err
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}
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var _ api.Meter = (*KSE)(nil)
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// CurrentPower implements the api.Meter interface
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func (wb *KSE) CurrentPower() (float64, error) {
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b, err := wb.conn.ReadInputRegisters(kseRegActualPower, 1)
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if err != nil {
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return 0, err
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}
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return float64(binary.BigEndian.Uint16(b)), err
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}
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var _ api.ChargeRater = (*KSE)(nil)
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// ChargedEnergy implements the api.MeterEnergy interface
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func (wb *KSE) ChargedEnergy() (float64, error) {
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b, err := wb.conn.ReadInputRegisters(kseRegCurrentLoadedEnergy, 1)
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if err != nil {
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return 0, err
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}
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return float64(binary.BigEndian.Uint16(b)) / 100, err
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}
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var _ api.MeterEnergy = (*KSE)(nil)
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// TotalEnergy implements the api.MeterEnergy interface
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func (wb *KSE) TotalEnergy() (float64, error) {
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b, err := wb.conn.ReadInputRegisters(kseRegEnergy, 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(binary.BigEndian.Uint32(b)) / 1e3, nil
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}
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var _ api.PhaseVoltages = (*KSE)(nil)
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// Voltages implements the api.PhaseVoltages interface
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func (wb *KSE) Voltages() (float64, float64, float64, error) {
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b, err := wb.conn.ReadInputRegisters(kseRegVoltages, 3)
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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(binary.BigEndian.Uint16(b[2*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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var _ api.PhaseCurrents = (*KSE)(nil)
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// Currents implements the api.PhaseCurrents interface
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func (wb *KSE) Currents() (float64, float64, float64, error) {
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b, err := wb.conn.ReadInputRegisters(kseRegCurrents, 3)
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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(binary.BigEndian.Uint16(b[2*i:])) / 1e3
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}
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return res[0], res[1], res[2], nil
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}
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// phases1p3p implements the api.PhaseSwitcher interface
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func (wb *KSE) phases1p3p(phases int) error {
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var b uint16 = 0 // 3p
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if phases == 1 {
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b = 1 // 1p
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}
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_, err := wb.conn.WriteSingleRegister(kseRegRelayMode, b)
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return err
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}
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// getPhases implements the api.PhaseGetter interface
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func (wb *KSE) getPhases() (int, error) {
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b, err := wb.conn.ReadHoldingRegisters(kseRegRelayMode, 1)
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if err != nil {
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return 0, err
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}
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if binary.BigEndian.Uint16(b) == 0 {
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return 3, nil
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}
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return 1, nil
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}
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// Identify implements the api.Identifier interface
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func (wb *KSE) identify() ([]string, error) {
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b, err := wb.conn.ReadHoldingRegisters(kseRegNFCTransactionID, 4)
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if err != nil {
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return nil, err
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}
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return []string{bytesAsString(b)}, nil
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}
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var _ api.Diagnosis = (*KSE)(nil)
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// Diagnose implements the api.Diagnosis interface
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func (wb *KSE) Diagnose() {
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if b, err := wb.conn.ReadInputRegisters(kseRegFirmwareVersion, 1); err == nil {
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fmt.Printf("\tFirmware:\t%x\n", b)
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}
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if b, err := wb.conn.ReadInputRegisters(kseRegChargeMode, 1); err == nil {
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fmt.Printf("\tCharge Mode:\t%d\n", binary.BigEndian.Uint16(b))
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}
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if b, err := wb.conn.ReadInputRegisters(kseRegVehicleState, 1); err == nil {
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fmt.Printf("\tState:\t%d\n", binary.BigEndian.Uint16(b))
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}
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if wb.has1p3p {
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if b, err := wb.conn.ReadHoldingRegisters(kseRegRelayMode, 1); err == nil {
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fmt.Printf("\tPhases:\t%d\n", binary.BigEndian.Uint16(b))
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}
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}
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if wb.hasRfid {
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if b, err := wb.conn.ReadHoldingRegisters(kseRegNFCTransactionID, 4); err == nil {
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fmt.Printf("\tNFC ID:\t%s\n", b)
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}
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}
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}
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