| // |
| // Licensed to the Apache Software Foundation (ASF) under one |
| // or more contributor license agreements. See the NOTICE file |
| // distributed with this work for additional information |
| // regarding copyright ownership. The ASF licenses this file |
| // to you under the Apache License, Version 2.0 (the |
| // "License"); you may not use this file except in compliance |
| // with the License. You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, |
| // software distributed under the License is distributed on an |
| // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| // KIND, either express or implied. See the License for the |
| // specific language governing permissions and limitations |
| // under the License. |
| // |
| package main |
| |
| import ( |
| "fmt" |
| "github.com/apache/plc4x/plc4go/pkg/plc4go" |
| "github.com/apache/plc4x/plc4go/pkg/plc4go/drivers" |
| "github.com/apache/plc4x/plc4go/pkg/plc4go/model" |
| "github.com/apache/plc4x/plc4go/pkg/plc4go/transports" |
| ) |
| |
| func main() { |
| driverManager := plc4go.NewPlcDriverManager() |
| transports.RegisterUdpTransport(driverManager) |
| drivers.RegisterKnxDriver(driverManager) |
| |
| // Get a connection to a remote PLC |
| crc := driverManager.GetConnection("knxnet-ip:udp://192.168.42.11") |
| |
| // Wait for the driver to connect (or not) |
| connectionResult := <-crc |
| if connectionResult.Err != nil { |
| fmt.Printf("error connecting to PLC: %s", connectionResult.Err.Error()) |
| return |
| } |
| connection := connectionResult.Connection |
| |
| // Make sure the connection is closed at the end |
| defer connection.BlockingClose() |
| |
| // Prepare a read-request |
| rrb := connection.ReadRequestBuilder() |
| rrb.AddQuery("firstFlorTemperatures", "2/[1,2,4,6]/10:DPT_Value_Temp") |
| rrb.AddQuery("secondFlorTemperatures", "3/[2,3,4,6]/10:DPT_Value_Temp") |
| readRequest, err := rrb.Build() |
| if err != nil { |
| fmt.Printf("error preparing read-request: %s", connectionResult.Err.Error()) |
| return |
| } |
| |
| // Execute a read-request |
| rrc := readRequest.Execute() |
| |
| // Wait for the response to finish |
| rrr := <-rrc |
| if rrr.Err != nil { |
| fmt.Printf("error executing read-request: %s", rrr.Err.Error()) |
| return |
| } |
| |
| // Do something with the response |
| for _, fieldName := range rrr.Response.GetFieldNames() { |
| if rrr.Response.GetResponseCode(fieldName) != model.PlcResponseCode_OK { |
| fmt.Printf("error an non-ok return code for field %s: %s\n", fieldName, rrr.Response.GetResponseCode(fieldName).GetName()) |
| continue |
| } |
| |
| value := rrr.Response.GetValue(fieldName) |
| if value != nil { |
| fmt.Printf("Got nil for field %s\n", fieldName) |
| } else if value.GetStruct() != nil { |
| for address, structValue := range value.GetStruct() { |
| fmt.Printf("Got result for field %s with address: %s: %s °C\n", fieldName, address, structValue.GetString()) |
| } |
| } else { |
| fmt.Printf("Got result for field %s: %s °C\n", fieldName, value.GetString()) |
| } |
| } |
| } |
