235 lines
6.1 KiB
Go
235 lines
6.1 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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)
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// https://api.library.loxone.com/downloader/file/2425/Modbus%20Protocol%20RAEDIAN%20AC%20Wallbox%20v0.3.pdf
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// Raedian charger implementation
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type Raedian struct {
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log *util.Logger
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conn *modbus.Connection
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curr uint32 // mA
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enabled bool
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}
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const (
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raedianRegStatus = 0x800C // uint32 RO ENUM
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raedianRegCurrents = 0x8010 // uint32 RO mA
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raedianRegVoltages = 0x8016 // uint32 RO 0.1V
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raedianRegPower = 0x801C // uint32 RO W
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raedianRegChargedEnergy = 0x801E // uint32 RO Wh
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raedianRegMaxCurrent = 0x8100 // uint32 WO mA
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raedianRegPhases = 0x8102 // uint16 WO
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raedianRegStartStop = 0x8105 // uint16 WO 1=start, 0=stop
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)
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func init() {
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registry.AddCtx("raedian", NewRaedianFromConfig)
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}
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// NewRaedianFromConfig creates a Raedian charger from generic config
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func NewRaedianFromConfig(ctx context.Context, other map[string]any) (api.Charger, error) {
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cc := modbus.Settings{
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ID: 1,
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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 NewRaedian(ctx, cc.URI, cc.Device, cc.Comset, cc.Baudrate, cc.Protocol(), cc.ID)
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}
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// NewRaedian creates Raedian charger
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func NewRaedian(ctx context.Context, uri, device, comset string, baudrate int, proto modbus.Protocol, slaveID uint8) (*Raedian, 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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log := util.NewLogger("raedian")
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conn.Logger(log.TRACE)
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wb := &Raedian{
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log: log,
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conn: conn,
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curr: 6000, // assume min current
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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 *Raedian) Status() (api.ChargeStatus, error) {
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b, err := wb.conn.ReadHoldingRegisters(raedianRegStatus, 2)
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if err != nil {
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return api.StatusNone, err
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}
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// Register layout: A3 A2 A1 A0 (big-endian)
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// A1 (b[2]): Bit7 = current limit flag, Bits 6~0 = charging state
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// Bit 6~0
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// 0x00: State A: Idle
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// 0x01: State B1: EV Plug in, pending authorization
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// 0x02: State B2: EV Plug in, EVSE ready for charging(PWM)
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// 0x03: State C1: EV Ready for charge, S2 closed(no PWM)
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// 0x04: State C2: Charging Contact closed, energy delivering.
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// 0x05: Other
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state := b[2] & 0x7F
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switch state {
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case 0x00:
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return api.StatusA, nil
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case 0x01:
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wb.enabled = false
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return api.StatusB, nil
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case 0x02:
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wb.enabled = true
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return api.StatusB, nil
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case 0x03:
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wb.enabled = false
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return api.StatusC, nil
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case 0x04:
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wb.enabled = true
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return api.StatusC, nil
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default:
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return api.StatusNone, fmt.Errorf("invalid status: %#x", state)
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}
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}
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// Enabled implements the api.Charger interface
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func (wb *Raedian) Enabled() (bool, error) {
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return wb.enabled, nil
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}
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// Enable implements the api.Charger interface
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func (wb *Raedian) Enable(enable bool) error {
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var cur uint32
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if enable {
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cur = wb.curr
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}
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b := make([]byte, 4)
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binary.BigEndian.PutUint32(b, cur)
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_, err := wb.conn.WriteMultipleRegisters(raedianRegMaxCurrent, 2, b)
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if err == nil {
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wb.enabled = enable
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}
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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 *Raedian) MaxCurrent(current int64) error {
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return wb.MaxCurrentMillis(float64(current))
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}
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var _ api.ChargerEx = (*Raedian)(nil)
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// MaxCurrentMillis implements the api.ChargerEx interface
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func (wb *Raedian) MaxCurrentMillis(current float64) error {
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curr := uint32(current * 1000) // convert A to mA
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b := make([]byte, 4)
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binary.BigEndian.PutUint32(b, curr)
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_, err := wb.conn.WriteMultipleRegisters(raedianRegMaxCurrent, 2, b)
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if err == nil {
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wb.curr = curr
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}
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return err
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}
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var _ api.Meter = (*Raedian)(nil)
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// CurrentPower implements the api.Meter interface
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func (wb *Raedian) CurrentPower() (float64, error) {
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b, err := wb.conn.ReadHoldingRegisters(raedianRegPower, 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 = (*Raedian)(nil)
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// ChargedEnergy implements the api.ChargeRater interface
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func (wb *Raedian) ChargedEnergy() (float64, error) {
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b, err := wb.conn.ReadHoldingRegisters(raedianRegChargedEnergy, 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)) / 1000, nil
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}
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// getPhaseValues reads 3 sequential uint32 registers in a single Modbus operation
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func (wb *Raedian) getPhaseValues(reg uint16, divider float64) (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(binary.BigEndian.Uint32(b[4*i:])) / divider
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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 = (*Raedian)(nil)
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// Currents implements the api.PhaseCurrents interface
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func (wb *Raedian) Currents() (float64, float64, float64, error) {
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return wb.getPhaseValues(raedianRegCurrents, 1e3)
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}
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var _ api.PhaseVoltages = (*Raedian)(nil)
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// Voltages implements the api.PhaseVoltages interface
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func (wb *Raedian) Voltages() (float64, float64, float64, error) {
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return wb.getPhaseValues(raedianRegVoltages, 10)
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}
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var _ api.PhaseSwitcher = (*Raedian)(nil)
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// Phases1p3p implements the api.PhaseSwitcher interface
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func (wb *Raedian) Phases1p3p(phases int) error {
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u := uint16(0x01)
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if phases == 3 {
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u = 0x02
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}
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_, err := wb.conn.WriteSingleRegister(raedianRegPhases, u)
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return err
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}
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