XBOS EVSE

Interface: i.xbos.evse

Description: Standard XBOS electric vehicle supply equipment (charging station)

PONUM: 2.1.1.7

Properties

Name Type Description Units Required
charging_time_left integer Seconds left until car is fully charged s false
current double Active charge current A true
current_limit double Maximum allowed current for charging A true
state boolean Charge state of the EVSE on/off true
time integer nanoseconds since the Unix epoch ns true
voltage double Active charge voltage V true

Signals

  • info:
    • current_limit
    • current
    • state
    • voltage
    • charging_time_left
    • time

Slots

  • state:
    • current_limit
    • state

Interfacing in Go

package main

import (
    "fmt"
    bw2 "gopkg.in/immesys/bw2bind.v5"
)

func main() {
    client := bw2.ConnectOrExit("")
    client.OverrideAutoChainTo(true)
    client.SetEntityFromEnvironOrExit()

    base_uri := "EVSE uri goes here ending in i.xbos.evse"

    // subscribe
    type signal struct {
        Current_limit      float64 `msgpack:"current_limit"`
        Current            float64 `msgpack:"current"`
        State              bool    `msgpack:"state"`
        Voltage            float64 `msgpack:"voltage"`
        Charging_time_left int64   `msgpack:"charging_time_left"`
        Time               int64   `msgpack:"time"`
    }
    c, err := client.Subscribe(&bw2.SubscribeParams{
        URI: base_uri + "/signal/info",
    })
    if err != nil {
        panic(err)
    }

    for msg := range c {
        var current_state signal
        po := msg.GetOnePODF("2.1.1.7/32")
        err := po.(bw2.MsgPackPayloadObject).ValueInto(&current_state)
        if err != nil {
            fmt.Println(err)
        } else {
            fmt.Println(current_state)
        }
    }
}

Interfacing in Python


import time
import msgpack

from bw2python.bwtypes import PayloadObject
from bw2python.client import Client

bw_client = Client()
bw_client.setEntityFromEnviron()
bw_client.overrideAutoChainTo(True)

def onMessage(bw_message):
  for po in bw_message.payload_objects:
    if po.type_dotted == (2,1,1,7):
      print msgpack.unpackb(po.content)

bw_client.subscribe("EVSE uri ending in i.xbos.evse/signal/info", onMessage)

print "Subscribing. Ctrl-C to quit."
while True:
  time.sleep(10000)

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