-
Notifications
You must be signed in to change notification settings - Fork 389
/
TsapIdEncoder.go
42 lines (36 loc) · 1.39 KB
/
TsapIdEncoder.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
/*
* 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
*
* https://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 s7
import "github.com/apache/plc4x/plc4go/protocols/s7/readwrite/model"
func encodeS7TsapId(deviceGroup model.DeviceGroup, rack int32, slot int32) uint16 {
firstByte := int32(deviceGroup) << 8
secondByte := (rack << 4) | (slot & 0x0F)
return uint16(firstByte | secondByte)
}
func decodeDeviceGroup(tsapId int32) model.DeviceGroup {
deviceGroupCode := uint8((tsapId >> 8) & (0xFF))
value, _ := model.DeviceGroupByValue(deviceGroupCode)
return value
}
func decodeRack(tsapId int32) int64 {
return int64((tsapId >> 4) & 0xF)
}
func decodeSlot(tsapId int32) int64 {
return int64(tsapId & 0xF)
}