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Wiki source code of ThingsBoard

Version 93.1 by Dilisi S on 2025/03/08 03:59
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1 **Table of Contents:**
2
3 {{toc/}}
4
5 {{warning}}
6 Draft Document
7 {{/warning}}
8
9
10
11
12 = 1. Introduction =
13
14
15 This document guides you on integrating Dragino **-NB** and **-CB** series devices data with ThingsBoard. For this guide, we use ThingsBoard Cloud, which is one of the ThingsBoard versions that allows you to try it for free.
16
17 The **NB series** devices end with the suffix **-NB**, and the **CB series** devices end with the suffix **-CB**. For example, **S31B-NB** is an **NB device**, and **S31-CB** is a **CB device**.
18
19
20
21
22
23 = 2. Data Converters =
24
25
26 In **ThingsBoard**, **Data Converters** are components used to transform incoming or outgoing data between different formats, typically to convert raw telemetry data from devices into a structured format that ThingsBoard can understand, or vice versa.
27
28
29 == 2.1 Uplink ==
30
31
32 In the left navigation, click **Integrations center**, and then click **Data converters**.
33
34
35
36 [[image:data-converters-list-empty.png]]
37
38
39 On the **Data converters** page, click on the ‘**+**’ button, and then click on the **Create new converter** from the dropdown menu.
40
41
42
43 [[image:create-new-converter-menu.png||height="259" width="500"]]
44
45
46 The **Add data converter** window will appear. Name it ‘**MQTT Uplink Converter NB/CB**’ and select the Type as **Uplink**.
47
48 Click on the **TBEL** button if not selected it by default. Delete the existing decoder function in the code editor. Now copy and paste the following decoder function written in **TBEL (ThingsBoard Expression Language)** in to the **code editor**. This decoder function is compatible for both NB and CB series devices.
49
50 {{code language="JavaScript"}}
51 /** Decoder **/
52
53 // decode payload to string
54 var payloadStr = decodeToString(payload);
55 var data = JSON.parse(payloadStr);
56
57 var deviceName = metadata.topic.split("/")[3];
58 // decode payload to JSON
59 var deviceType = 'sensor';
60
61 // Result object with device attributes/telemetry data
62 var result = {
63 deviceName: deviceName,
64 deviceType: deviceType,
65 attributes: {
66 integrationName: metadata['integrationName'],
67 },
68 telemetry: {
69 temperature: data.temperature,
70 humidity: data.humidity,
71 }
72 };
73
74 /** Helper functions 'decodeToString' and 'decodeToJson' are already built-in **/
75
76 return result;
77 {{/code}}
78
79
80 Click on the **Add** button.
81
82
83
84 [[image:add-uplink-data-converter.png||height="529" width="500"]]
85
86
87 You should see that the newly added **MQTT Uplink converter **NB/CB is listed on the **Data Converters** page.
88
89 [[image:data-converter-list-showing-uplink-dc.png]]
90
91
92 == 3.2 Downlink ==
93
94
95 On the **Data converters** page, click on the ‘**+**’ button, and then click on the **Create new converter** from the dropdown menu.
96
97 [[image:ThingsBoard-new-data-converter.png||height="282" width="500"]]
98
99
100 The **Add data converter** window will appear. Name it ‘**MQTT Downlink Converter NB/CB**’ and select the Type as **Downlink**.
101
102 Click on the **TBEL** button if not selected it by default. Now copy and paste the following encoder function written in **TBEL (ThingsBoard Expression Language)** in to the **code editor**. This encoder function is compatible for both NB and CB series devices.
103
104
105 {{code language="JavaScript"}}
106 // Encode downlink data from incoming Rule Engine message
107
108 // msg - JSON message payload downlink message json
109 // msgType - type of message, for ex. 'ATTRIBUTES_UPDATED', 'POST_TELEMETRY_REQUEST', etc.
110 // metadata - list of key-value pairs with additional data about the message
111 // integrationMetadata - list of key-value pairs with additional data defined in Integration executing this converter
112
113 /** Encoder **/
114
115 var data = {};
116
117 // Process data from incoming message and metadata
118
119 data.tempFreq = msg.temperatureUploadFrequency;
120 data.humFreq = msg.humidityUploadFrequency;
121
122 data.devSerialNumber = metadata['ss_serialNumber'];
123
124 // Result object with encoded downlink payload
125 var result = {
126
127 // downlink data content type: JSON, TEXT or BINARY (base64 format)
128 contentType: "JSON",
129
130 // downlink data
131 data: JSON.stringify(data),
132
133 // Optional metadata object presented in key/value format
134 metadata: {
135 topic: metadata['deviceType']+'/'+metadata['deviceName']+'/upload'
136 }
137
138 };
139
140 return result;
141 {{/code}}
142
143
144 Click on the **Add** button.
145
146
147
148 [[image:add-downlink-data-converter.png||height="529" width="500"]]
149
150
151 You should see that the newly added **MQTT Downlink** Converter NB/CB is listed on the **Data Converters** page.
152
153
154
155 [[image:data-converters-list.png]]
156
157 = 3. Add Integration =
158
159
160 In the left navigation, click **Integrations center**, and then click **Integrations**.
161
162 On the **Integrations** page, click on the '**+**' button.
163
164 [[image:data-converter-list-page.png]]
165
166
167 The **Add integration** window appears.
168
169 In the **Add integration** window, configure the following settings:
170
171
172 **Basic settings:**
173
174 * **Integration type**: MQTT
175 * **Name**: MQTT integration NB/CB
176
177 Click **Next** button.
178
179 [[image:add-integration-basic-settings.png||height="511" width="500"]]
180
181
182 **Uplink data converter:**
183
184 * Click on the **Select existing** button.
185 * **Uplink data converter**: Select **MQTT Uplink Converter NB/CB **from the dropdown list.
186
187 Click **Next** button.
188
189 [[image:add-integration-uplink-data-converter.png||width="500"]]
190
191
192 **Downlink data converter:**
193
194 * Click on the **Select existing** button.
195 * **Downlink data converter**: Select **MQTT Downlink Converter NB/CB **from the dropdown list.
196
197 Click **Next** button.
198
199 [[image:add-integration-downlink-data-converter.png||height="510" width="500"]]
200
201
202 **Connection:**
203
204 * **Host**: Cluster URL (Eg. 011731f7928541588a6cdfbbedfc63f4.s1.eu.hivemq.cloud)
205 * **Port**: 8883
206 * **Credentials**: Basic
207 * **Enable SSL**: YES
208 * **Username**: Username (from your HiveMQ Cloud Cluster with your credentials)
209 * **Password:** Password (from your HiveMQ Cloud Cluster with your credentials)
210 * **Topic:** tb/mqtt-integration-tutorial/sensors/+/telemetry (the + replaces any 'device name' and creates devices in the Entities -> Devices)
211 * **QoS:** 0-At most once
212 * **Clean session:** NO
213 * **Retained**: NO
214
215 Click on the **Check connection** button to verify the MQTT connection using the provided parameters.
216
217 [[image:add-integration-connection.png||width="500"]]
218
219
220 If the connection is successful, you will see the **Connected** message.
221
222 Click on the **Add** button.
223
224 [[image:add-connection-success.png||height="511" width="500"]]
225
226
227 You should see that the newly added integration is listed on the **Integrations** page.
228
229 Since we haven't received data from a device yet, the integration **Status** is shown as **Pending.**
230
231 [[image:integrations-list-added-pending.png]]
232
233
234 = 5. Verifying the receipt of data from the device =
235
236
237 On the terminal, issue the following MQTT command which simulates the device S31B-NB.
238
239 {{code language="none"}}
240 mosquitto_pub -d -q 1 -h mqtt.eu.thingsboard.cloud -p 1883 -t v1/devices/S31B-NB/telemetry -u "24vk3w9h7sqdld1me5eh" -m "{temperature:20}"
241 {{/code}}
242
243 If the integration was performed without errors, after the transmission of the first telemetry, a new device with the name “S31B-NB” will appear in the Devices → All. Also, you can verify the input and output data, respectively, before and after conversion in Data converters → UDP Uplink Converter NB/CB → Events.
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245