/
phoenix-ev-eth.go
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/
phoenix-ev-eth.go
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package charger
import (
"fmt"
"time"
"github.com/thommyho/robotui/api"
"github.com/thommyho/robotui/util"
"github.com/thommyho/robotui/util/modbus"
"github.com/volkszaehler/mbmd/meters/rs485"
)
const (
phxEVEthRegStatus = 100 // Input
phxEVEthRegChargeTime = 102 // Input
phxEVEthRegMaxCurrent = 528 // Holding
phxEVEthRegEnable = 400 // Coil
phxEVEthRegPower = 120 // power reading
phxEVEthRegEnergy = 904 // energy reading, 128 for fw <= 1.11
)
var phxEVEthRegCurrents = []uint16{114, 116, 118} // current readings
// PhoenixEVEth is an api.Charger implementation for Phoenix EV-***-ETH controller models
// EV-CC-AC1-M3-CBC-RCM-ETH, EV-CC-AC1-M3-CBC-RCM-ETH-3G, EV-CC-AC1-M3-RCM-ETH-XP, EV-CC-AC1-M3-RCM-ETH-3G-XP
// It uses Modbus TCP to communicate with the controller at modbus client id 255.
type PhoenixEVEth struct {
conn *modbus.Connection
}
func init() {
registry.Add("phoenix-ev-eth", NewPhoenixEVEthFromConfig)
}
//go:generate go run ../cmd/tools/decorate.go -f decoratePhoenixEVEth -b *PhoenixEVEth -r api.Charger -t "api.Meter,CurrentPower,func() (float64, error)" -t "api.MeterEnergy,TotalEnergy,func() (float64, error)" -t "api.PhaseCurrents,Currents,func() (float64, float64, float64, error)"
// NewPhoenixEVEthFromConfig creates a Phoenix charger from generic config
func NewPhoenixEVEthFromConfig(other map[string]interface{}) (api.Charger, error) {
cc := struct {
URI string
ID uint8
Meter struct {
Power, Energy, Currents bool
}
}{
URI: "192.168.0.8:502", // default
ID: 255, // default
}
if err := util.DecodeOther(other, &cc); err != nil {
return nil, err
}
wb, err := NewPhoenixEVEth(cc.URI, cc.ID)
var currentPower func() (float64, error)
if cc.Meter.Power {
currentPower = wb.currentPower
}
var totalEnergy func() (float64, error)
if cc.Meter.Energy {
totalEnergy = wb.totalEnergy
}
var currents func() (float64, float64, float64, error)
if cc.Meter.Currents {
currents = wb.currents
}
return decoratePhoenixEVEth(wb, currentPower, totalEnergy, currents), err
}
// NewPhoenixEVEth creates a Phoenix charger
func NewPhoenixEVEth(uri string, id uint8) (*PhoenixEVEth, error) {
conn, err := modbus.NewConnection(uri, "", "", 0, modbus.Tcp, id)
if err != nil {
return nil, err
}
log := util.NewLogger("ev-eth")
conn.Logger(log.TRACE)
wb := &PhoenixEVEth{
conn: conn,
}
return wb, nil
}
// Status implements the api.Charger interface
func (wb *PhoenixEVEth) Status() (api.ChargeStatus, error) {
b, err := wb.conn.ReadInputRegisters(phxEVEthRegStatus, 1)
if err != nil {
return api.StatusNone, err
}
return api.ChargeStatusString(string(b[1]))
}
// Enabled implements the api.Charger interface
func (wb *PhoenixEVEth) Enabled() (bool, error) {
b, err := wb.conn.ReadCoils(phxEVEthRegEnable, 1)
if err != nil {
return false, err
}
return b[0] == 1, nil
}
// Enable implements the api.Charger interface
func (wb *PhoenixEVEth) Enable(enable bool) error {
var u uint16
if enable {
u = modbus.CoilOn
}
_, err := wb.conn.WriteSingleCoil(phxEVEthRegEnable, u)
return err
}
// MaxCurrent implements the api.Charger interface
func (wb *PhoenixEVEth) MaxCurrent(current int64) error {
if current < 6 {
return fmt.Errorf("invalid current %d", current)
}
_, err := wb.conn.WriteSingleRegister(phxEVEthRegMaxCurrent, uint16(current))
return err
}
var _ api.ChargeTimer = (*PhoenixEVEth)(nil)
// ChargingTime implements the api.ChargeTimer interface
func (wb *PhoenixEVEth) ChargingTime() (time.Duration, error) {
b, err := wb.conn.ReadInputRegisters(phxEVEthRegChargeTime, 2)
if err != nil {
return 0, err
}
// 2 words, least significant word first
secs := uint64(b[3])<<16 | uint64(b[2])<<24 | uint64(b[1]) | uint64(b[0])<<8
return time.Duration(secs) * time.Second, nil
}
// CurrentPower implements the api.Meter interface
func (wb *PhoenixEVEth) currentPower() (float64, error) {
b, err := wb.conn.ReadInputRegisters(phxEVEthRegPower, 2)
if err != nil {
return 0, err
}
return rs485.RTUUint32ToFloat64Swapped(b), err
}
// totalEnergy implements the api.MeterEnergy interface
func (wb *PhoenixEVEth) totalEnergy() (float64, error) {
b, err := wb.conn.ReadHoldingRegisters(phxEVEthRegEnergy, 2)
if err != nil {
return 0, err
}
return rs485.RTUUint32ToFloat64Swapped(b) / 1000, err
}
// currents implements the api.PhaseCurrents interface
func (wb *PhoenixEVEth) currents() (float64, float64, float64, error) {
var currents []float64
for _, regCurrent := range phxEVEthRegCurrents {
b, err := wb.conn.ReadInputRegisters(regCurrent, 2)
if err != nil {
return 0, 0, 0, err
}
currents = append(currents, rs485.RTUUint32ToFloat64Swapped(b))
}
return currents[0], currents[1], currents[2], nil
}