161 lines
3.7 KiB
Go
161 lines
3.7 KiB
Go
package charger
|
|
|
|
// LICENSE
|
|
|
|
// Copyright (c) evcc.io (andig, naltatis, premultiply)
|
|
|
|
// This module is NOT covered by the MIT license. All rights reserved.
|
|
|
|
// The above copyright notice and this permission notice shall be included in all
|
|
// copies or substantial portions of the Software.
|
|
|
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
// SOFTWARE.
|
|
|
|
import (
|
|
"context"
|
|
"encoding/binary"
|
|
"fmt"
|
|
"time"
|
|
|
|
"github.com/evcc-io/evcc/api"
|
|
"github.com/evcc-io/evcc/util"
|
|
"github.com/evcc-io/evcc/util/modbus"
|
|
"github.com/evcc-io/evcc/util/sponsor"
|
|
)
|
|
|
|
// https://shop.alphatec-systeme.de/media/pdf/4d/0e/64/MontageanleitungwlFxbRgs4NKK3.pdf
|
|
|
|
// Alphatec charger implementation
|
|
type Alphatec struct {
|
|
conn *modbus.Connection
|
|
curr uint16
|
|
}
|
|
|
|
const (
|
|
alphatecRegStatus = 0
|
|
alphatecRegAmpsConfig = 5
|
|
)
|
|
|
|
func init() {
|
|
registry.AddCtx("alphatec", NewAlphatecFromConfig)
|
|
}
|
|
|
|
// NewAlphatecFromConfig creates a Alphatec charger from generic config
|
|
func NewAlphatecFromConfig(ctx context.Context, other map[string]any) (api.Charger, error) {
|
|
cc := modbus.Settings{
|
|
ID: 1,
|
|
}
|
|
|
|
if err := util.DecodeOther(other, &cc); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return NewAlphatec(ctx, cc.URI, cc.Device, cc.Comset, cc.Baudrate, cc.Protocol(), cc.ID)
|
|
}
|
|
|
|
// NewAlphatec creates Alphatec charger
|
|
func NewAlphatec(ctx context.Context, uri, device, comset string, baudrate int, proto modbus.Protocol, slaveID uint8) (api.Charger, error) {
|
|
conn, err := modbus.NewConnection(ctx, uri, device, comset, baudrate, proto, slaveID)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
conn.Delay(20 * time.Millisecond)
|
|
|
|
if !sponsor.IsAuthorized() {
|
|
return nil, api.ErrSponsorRequired
|
|
}
|
|
|
|
log := util.NewLogger("alphatec")
|
|
conn.Logger(log.TRACE)
|
|
|
|
wb := &Alphatec{
|
|
conn: conn,
|
|
curr: 6,
|
|
}
|
|
|
|
// get initial state from charger
|
|
curr, err := wb.getCurrent()
|
|
if err != nil {
|
|
return nil, fmt.Errorf("current limit: %w", err)
|
|
}
|
|
if curr > 0 {
|
|
wb.curr = curr
|
|
}
|
|
|
|
return wb, err
|
|
}
|
|
|
|
func (wb *Alphatec) setCurrent(current uint16) error {
|
|
b := make([]byte, 2)
|
|
binary.BigEndian.PutUint16(b, current)
|
|
|
|
_, err := wb.conn.WriteMultipleRegisters(alphatecRegAmpsConfig, 1, b)
|
|
|
|
return err
|
|
}
|
|
|
|
func (wb *Alphatec) getCurrent() (uint16, error) {
|
|
b, err := wb.conn.ReadHoldingRegisters(alphatecRegAmpsConfig, 1)
|
|
if err != nil {
|
|
return 0, err
|
|
}
|
|
|
|
return binary.BigEndian.Uint16(b), nil
|
|
}
|
|
|
|
// Status implements the api.Charger interface
|
|
func (wb *Alphatec) Status() (api.ChargeStatus, error) {
|
|
b, err := wb.conn.ReadHoldingRegisters(alphatecRegStatus, 1)
|
|
if err != nil {
|
|
return api.StatusNone, err
|
|
}
|
|
|
|
switch u := binary.BigEndian.Uint16(b); u {
|
|
case 1:
|
|
return api.StatusA, nil
|
|
case 2, 8:
|
|
return api.StatusB, nil
|
|
case 3:
|
|
return api.StatusC, nil
|
|
default:
|
|
return api.StatusNone, fmt.Errorf("invalid status: %d", u)
|
|
}
|
|
}
|
|
|
|
// Enabled implements the api.Charger interface
|
|
func (wb *Alphatec) Enabled() (bool, error) {
|
|
curr, err := wb.getCurrent()
|
|
|
|
return curr >= 6, err
|
|
}
|
|
|
|
// Enable implements the api.Charger interface
|
|
func (wb *Alphatec) Enable(enable bool) error {
|
|
var curr uint16
|
|
if enable {
|
|
curr = wb.curr
|
|
}
|
|
|
|
return wb.setCurrent(curr)
|
|
}
|
|
|
|
// MaxCurrent implements the api.Charger interface
|
|
func (wb *Alphatec) MaxCurrent(current int64) error {
|
|
if current < 6 {
|
|
return fmt.Errorf("invalid current %d", current)
|
|
}
|
|
|
|
err := wb.setCurrent(uint16(current))
|
|
if err == nil {
|
|
wb.curr = uint16(current)
|
|
}
|
|
|
|
return err
|
|
}
|