252 lines
7.1 KiB
Go
252 lines
7.1 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/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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// Voltie charger implementation
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// https://voltie.eu
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// Modbus API documentation v1.02
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const (
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voltieRegChargerID = 0x0000 // R, INT16, Voltie Charger ID
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voltieRegFirmware = 0x0001 // R, INT16, FW version
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voltieRegStatus = 0x000A // R, INT16, EVSE_STATE
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voltieRegAutoStart = 0x000B // R/W, INT16, Auto Start enabled
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voltieRegChargingEnabled = 0x000C // R/W, INT16, Charging enabled
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voltieRegCharging = 0x000D // R, INT16, Charging (0=no charging, 1=charging)
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voltieRegPhases = 0x000E // R, INT16, Number of phases in use
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voltieRegStopReason = 0x0012 // R, INT16, Charge stop reason
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voltieRegCurrentLimit = 0x0014 // R/W, INT16, Software current limit [mA]
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voltieRegVoltages = 0x2000 // R, INT32, Phase L1 voltage [mV]
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voltieRegCurrents = 0x2006 // R, INT32, Phase L1 charging current [mA]
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voltieRegChargeDuration = 0x200C // R, INT32, Charge duration [s]
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voltieRegChargedEnergy = 0x200E // R, INT32, Charged energy in current session [Ws]
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voltieRegChargingPower = 0x2010 // R, INT32, Charging power [W]
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)
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// Voltie is an api.Charger implementation for Voltie wallboxes
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type Voltie struct {
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conn *modbus.Connection
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}
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func init() {
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registry.AddCtx("voltie", NewVoltieFromConfig)
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}
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// NewVoltieFromConfig creates a Voltie charger from generic config
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func NewVoltieFromConfig(ctx context.Context, other map[string]any) (api.Charger, error) {
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cc := struct {
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modbus.TcpSettings `mapstructure:",squash"`
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}{
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TcpSettings: modbus.TcpSettings{
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ID: 1,
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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 NewVoltie(ctx, cc.URI, cc.ID)
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}
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// NewVoltie creates a Voltie charger
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func NewVoltie(ctx context.Context, uri string, slaveID uint8) (*Voltie, error) {
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conn, err := modbus.NewConnection(ctx, uri, "", "", 0, modbus.Tcp, slaveID)
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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("voltie")
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conn.Logger(log.TRACE)
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wb := &Voltie{
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conn: conn,
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}
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// Disable auto start
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if _, err := wb.conn.WriteSingleRegister(voltieRegAutoStart, 0); err != nil {
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return nil, err
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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 *Voltie) Status() (api.ChargeStatus, error) {
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b, err := wb.conn.ReadHoldingRegisters(voltieRegStatus, 1)
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if err != nil {
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return api.StatusNone, err
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}
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status := binary.BigEndian.Uint16(b)
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// EVSE states:
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// 0x01: vehicle in state A – not connected
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// 0x02: vehicle in state B – connected, ready
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// 0x03: vehicle in state C – charging
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// 0x04: vehicle in state D – charging, ventilation required
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// 0x0D: vehicle in state E – vehicle error
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// 0x05-0x0C, 0x0E-0x11: internal error states
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// 0xFF: charger disabled, not functioning
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switch status {
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case 0x01:
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return api.StatusA, nil
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case 0x02:
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return api.StatusB, nil
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case 0x03, 0x04:
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return api.StatusC, nil
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default:
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return api.StatusNone, fmt.Errorf("invalid status: %0x", 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 *Voltie) Enabled() (bool, error) {
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b, err := wb.conn.ReadHoldingRegisters(voltieRegChargingEnabled, 1)
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if err != nil {
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return false, err
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}
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return binary.BigEndian.Uint16(b) != 0, nil
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}
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// Enable implements the api.Charger interface
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func (wb *Voltie) Enable(enable bool) error {
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var u uint16
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if enable {
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u = 1
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}
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_, err := wb.conn.WriteSingleRegister(voltieRegChargingEnabled, 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 *Voltie) MaxCurrent(current int64) error {
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return wb.MaxCurrentMillis(float64(current))
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}
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var _ api.ChargerEx = (*Voltie)(nil)
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// MaxCurrentMillis implements the api.ChargerEx interface
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func (wb *Voltie) MaxCurrentMillis(current float64) error {
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if current < 6 {
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return fmt.Errorf("invalid current %.1f", current)
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}
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_, err := wb.conn.WriteSingleRegister(voltieRegCurrentLimit, uint16(current*1000))
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return err
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}
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var _ api.Meter = (*Voltie)(nil)
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// CurrentPower implements the api.Meter interface
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func (wb *Voltie) CurrentPower() (float64, error) {
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b, err := wb.conn.ReadHoldingRegisters(voltieRegChargingPower, 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)), nil
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}
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var _ api.ChargeRater = (*Voltie)(nil)
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// ChargedEnergy implements the api.ChargeRater interface
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func (wb *Voltie) ChargedEnergy() (float64, error) {
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b, err := wb.conn.ReadHoldingRegisters(voltieRegChargedEnergy, 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)) / 3.6e6, nil // Ws to kWh
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}
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var _ api.PhaseCurrents = (*Voltie)(nil)
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// Currents implements the api.PhaseCurrents interface
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func (wb *Voltie) Currents() (float64, float64, float64, error) {
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b, err := wb.conn.ReadHoldingRegisters(voltieRegCurrents, 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(binary.BigEndian.Uint32(b[4*i:])) / 1e3 // mA to A
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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.PhaseVoltages = (*Voltie)(nil)
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// Voltages implements the api.PhaseVoltages interface
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func (wb *Voltie) Voltages() (float64, float64, float64, error) {
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b, err := wb.conn.ReadHoldingRegisters(voltieRegVoltages, 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(binary.BigEndian.Uint32(b[4*i:])) / 1e3 // mV to V
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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.Diagnosis = (*Voltie)(nil)
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// Diagnose implements the api.Diagnosis interface
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func (wb *Voltie) Diagnose() {
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if b, err := wb.conn.ReadHoldingRegisters(voltieRegChargerID, 1); err == nil {
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fmt.Printf("\tCharger ID:\t%d\n", binary.BigEndian.Uint16(b))
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}
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if b, err := wb.conn.ReadHoldingRegisters(voltieRegFirmware, 1); err == nil {
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fmt.Printf("\tFirmware:\t%d\n", binary.BigEndian.Uint16(b))
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}
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if b, err := wb.conn.ReadHoldingRegisters(voltieRegStatus, 1); err == nil {
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fmt.Printf("\tStatus:\t\t0x%04X\n", binary.BigEndian.Uint16(b))
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}
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if b, err := wb.conn.ReadHoldingRegisters(voltieRegPhases, 1); err == nil {
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fmt.Printf("\tPhases:\t\t%d\n", binary.BigEndian.Uint16(b))
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}
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if b, err := wb.conn.ReadHoldingRegisters(voltieRegStopReason, 1); err == nil {
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fmt.Printf("\tStop reason:\t%d\n", binary.BigEndian.Uint16(b))
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}
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}
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