Wiki source code of LA66 LoRaWAN Module

Version 72.1 by Edwin Chen on 2022/07/03 00:02
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1 {{box cssClass="floatinginfobox" title="**Contents**"}}
2 {{toc/}}
3 {{/box}}
4
5 = LA66 LoRaWAN Module =
6
7 == What is LA66 LoRaWAN Module ==
8
9 (% style="color:blue" %)**Dragino LA66**(%%) is a small wireless LoRaWAN module that offers a very compelling mix of long-range, low power consumption, and secure data transmission. It is designed to facilitate developers to quickly deploy industrial-level LoRaWAN and IoT solutions. It helps users to turn the idea into a practical application and make the Internet of Things a reality. It is easy to create and connect your things everywhere.
10
11 (% style="color:blue" %)**LA66**(%%) is a ready-to-use module that includes the (% style="color:blue" %)**LoRaWAN v1.0.4 protocol**(%%). The LoRaWAN stack used in LA66 is used in more than 1 million LoRaWAN End Devices deployed world widely. This mature LoRaWAN stack greatly reduces the risk to make stable LoRaWAN Sensors to support different LoRaWAN servers and different countries' standards. External MCU can use AT command to call LA66 and start to transmit data via the LoRaWAN protocol.
12
13 Each LA66 module includes a (% style="color:blue" %)**world-unique OTAA key**(%%) for LoRaWAN registration.
14
15 Besides the support of the LoRaWAN protocol, LA66 also supports (% style="color:blue" %)**open-source peer-to-peer LoRa Protocol**(%%) for the none-LoRaWAN application.
16
17 LA66 is equipped with (% style="color:blue" %)**TCXO crystal**(%%) which ensures the module can achieve stable performance in extreme temperatures.
18
19
20 == Features ==
21
22 * Support LoRaWAN v1.0.4 protocol
23 * Support peer-to-peer protocol
24 * TCXO crystal to ensure RF performance on low temperature
25 * SMD Antenna pad and i-pex antenna connector
26 * Available in different frequency LoRaWAN frequency bands.
27 * World-wide unique OTAA keys.
28 * AT Command via UART-TTL interface
29 * Firmware upgradable via UART interface
30 * Ultra-long RF range
31
32 == Specification ==
33
34 * CPU: 32-bit 48 MHz
35 * Flash: 256KB
36 * RAM: 64KB
37 * Input Power Range: 1.8v ~~ 3.7v
38 * Power Consumption: < 4uA.
39 * Frequency Range: 150 MHz ~~ 960 MHz
40 * Maximum Power +22 dBm constant RF output
41 * High sensitivity: -148 dBm
42 * Temperature:
43 ** Storage: -55 ~~ +125℃
44 ** Operating: -40 ~~ +85℃
45 * Humidity:
46 ** Storage: 5 ~~ 95% (Non-Condensing)
47 ** Operating: 10 ~~ 95% (Non-Condensing)
48 * LoRa Tx Current: <90 mA at +17 dBm, 108 mA at +22 dBm
49 * LoRa Rx current: <9 mA
50 * I/O Voltage: 3.3v
51
52 == AT Command ==
53
54 AT Command is valid over Main TXD and Main RXD. Serial Baud Rate is 9600. AT commands can be found in AT Command documents.
55
56
57 == Dimension ==
58
59 [[image:image-20220517072526-1.png]]
60
61
62 == Pin Mapping ==
63
64 [[image:image-20220523101537-1.png]]
65
66 == Land Pattern ==
67
68 [[image:image-20220517072821-2.png]]
69
70
71 == Order Info ==
72
73 Part Number: **LA66-XXX**
74
75 **XX**: The default frequency band
76
77 * **AS923**: LoRaWAN AS923 band
78 * **AU915**: LoRaWAN AU915 band
79 * **EU433**: LoRaWAN EU433 band
80 * **EU868**: LoRaWAN EU868 band
81 * **KR920**: LoRaWAN KR920 band
82 * **US915**: LoRaWAN US915 band
83 * **IN865**: LoRaWAN IN865 band
84 * **CN470**: LoRaWAN CN470 band
85 * **PP**: Peer to Peer LoRa Protocol
86
87
88 = LA66 LoRaWAN Shield =
89
90 == Overview ==
91
92 LA66 LoRaWAN Shield is the Arduino shield base on LA66. Users can use LA66 LoRaWAN Shield to rapidly add LoRaWAN or peer-to-peer LoRa wireless function to  Arduino projects.
93
94
95 == Features ==
96
97 * Arduino Shield base on LA66 LoRaWAN module
98 * Support LoRaWAN v1.0.4 protocol
99 * Support peer-to-peer protocol
100 * TCXO crystal to ensure RF performance on low temperature
101 * SMA connector
102 * Available in different frequency LoRaWAN frequency bands.
103 * World-wide unique OTAA keys.
104 * AT Command via UART-TTL interface
105 * Firmware upgradable via UART interface
106 * Ultra-long RF range
107
108 == Specification ==
109
110 * CPU: 32-bit 48 MHz
111 * Flash: 256KB
112 * RAM: 64KB
113 * Input Power Range: 1.8v ~~ 3.7v
114 * Power Consumption: < 4uA.
115 * Frequency Range: 150 MHz ~~ 960 MHz
116 * Maximum Power +22 dBm constant RF output
117 * High sensitivity: -148 dBm
118 * Temperature:
119 ** Storage: -55 ~~ +125℃
120 ** Operating: -40 ~~ +85℃
121 * Humidity:
122 ** Storage: 5 ~~ 95% (Non-Condensing)
123 ** Operating: 10 ~~ 95% (Non-Condensing)
124 * LoRa Tx Current: <90 mA at +17 dBm, 108 mA at +22 dBm
125 * LoRa Rx current: <9 mA
126 * I/O Voltage: 3.3v
127
128 == Pin Mapping & LED ==
129
130 == Example: Use AT Command to communicate with LA66 module via Arduino UNO. ==
131
132 == Example: Join TTN network and send an uplink message, get downlink message. ==
133
134 == Example: Log Temperature Sensor(DHT11) and send data to TTN, show it in DataCake. ==
135
136 == Upgrade Firmware of LA66 LoRaWAN Shield ==
137
138 === what needs to be used ===
139
140 1.LA66 LoRaWAN Shield that needs to be upgraded
141
142 2.Arduino
143
144 3.USB TO TTL
145
146 [[image:image-20220602100052-2.png]]
147
148 === Wiring Schematic ===
149
150 [[image:image-20220602101311-3.png]]
151
152 LA66 LoRaWAN Shield  >>>>>>>>>>>>USB TTL
153
154 GND  >>>>>>>>>>>>GND
155
156 TXD  >>>>>>>>>>>>TXD
157
158 RXD  >>>>>>>>>>>>RXD
159
160 JP6 of LA66 LoRaWAN Shield needs to be connected with yellow jumper cap
161
162 Connect to the PC after connecting the wires
163
164 [[image:image-20220602102240-4.png]]
165
166 === Upgrade steps ===
167
168 ==== Dial the SW1 of the LA66 LoRaWAN Shield to the ISP's location as shown in the figure below ====
169
170 [[image:image-20220602102824-5.png]]
171
172 ==== Press the RST switch on the LA66 LoRaWAN Shield once ====
173
174 [[image:image-20220602104701-12.png]]
175
176 ==== Open the upgrade application software ====
177
178 Software download link:  [[https:~~/~~/www.dragino.com/downloads/index.php?dir=LSN50-LoRaST/Utility/LSN50N/>>https://www.dragino.com/downloads/index.php?dir=LSN50-LoRaST/Utility/LSN50N/]]
179
180 [[image:image-20220602103227-6.png]]
181
182 [[image:image-20220602103357-7.png]]
183
184 ===== Select the COM port corresponding to USB TTL =====
185
186 [[image:image-20220602103844-8.png]]
187
188 ===== Select the bin file to burn =====
189
190 [[image:image-20220602104144-9.png]]
191
192 [[image:image-20220602104251-10.png]]
193
194 [[image:image-20220602104402-11.png]]
195
196 ===== Click to start the download =====
197
198 [[image:image-20220602104923-13.png]]
199
200 ===== The following figure appears to prove that the burning is in progress =====
201
202 [[image:image-20220602104948-14.png]]
203
204 ===== The following picture appears to prove that the burning is successful =====
205
206 [[image:image-20220602105251-15.png]]
207
208 (% class="wikigeneratedid" %)
209 = =
210
211 == Order Info ==
212
213 Part Number: **LA66-LoRaWAN-Shield-XXX**
214
215 **XX**: The default frequency band
216
217 * **AS923**: LoRaWAN AS923 band
218 * **AU915**: LoRaWAN AU915 band
219 * **EU433**: LoRaWAN EU433 band
220 * **EU868**: LoRaWAN EU868 band
221 * **KR920**: LoRaWAN KR920 band
222 * **US915**: LoRaWAN US915 band
223 * **IN865**: LoRaWAN IN865 band
224 * **CN470**: LoRaWAN CN470 band
225 * **PP**: Peer to Peer LoRa Protocol
226
227
228 (% class="wikigeneratedid" %)
229 == Package Info ==
230
231 * LA66 LoRaWAN Shield x 1
232 * RF Antenna x 1
233
234
235
236
237
238 = LA66 USB LoRaWAN Adapter =
239
240 LA66 USB LoRaWAN Adapter is the USB Adapter for LA66, it combines a USB TTL Chip and LA66 module which can easy to test the LoRaWAN feature by using PC or embedded device which has USB Interface.
241
242 Before use, please make sure that the computer has installed the CP2102 driver
243
244 == Pin Mapping & LED ==
245
246 == Example Send & Get Messages via LoRaWAN in PC ==
247
248 Connect the LA66 LoRa Shield to the PC
249
250 [[image:image-20220602171217-1.png||height="615" width="915"]]
251
252 Open the serial port tool
253
254 [[image:image-20220602161617-8.png]]
255
256 [[image:image-20220602161718-9.png||height="529" width="927"]]
257
258 Press the reset switch RST on the LA66 LoRa Shield.
259
260 The following picture appears to prove that the LA66 LoRa Shield successfully entered the network
261
262 [[image:image-20220602161935-10.png]]
263
264 send instructions: AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data>
265
266 example: AT+SENDB=01,02,8,05820802581ea0a5
267
268 [[image:image-20220602162157-11.png]]
269
270 Check to see if TTN received the message
271
272 [[image:image-20220602162331-12.png||height="547" width="1044"]]
273
274 == Example Send & Get Messages via LoRaWAN in RPi ==
275
276 Connect the LA66 LoRa Shield to the RPI
277
278 [[image:image-20220602171233-2.png||height="592" width="881"]]
279
280 Log in to the RPI's terminal and connect to the serial port
281
282 [[image:image-20220602153146-3.png]]
283
284 Press the reset switch RST on the LA66 LoRa Shield.
285 The following picture appears to prove that the LA66 LoRa Shield successfully entered the network
286
287 [[image:image-20220602154928-5.png]]
288
289 send instructions: AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data>
290
291 example: AT+SENDB=01,02,8,05820802581ea0a5
292
293 [[image:image-20220602160339-6.png]]
294
295 Check to see if TTN received the message
296
297 [[image:image-20220602160627-7.png||height="468" width="1013"]]
298
299 === Install Minicom ===
300
301 Enter the following command in the RPI terminal
302
303 apt update
304
305 [[image:image-20220602143155-1.png]]
306
307 apt install minicom
308
309 [[image:image-20220602143744-2.png]]
310
311 === Send PC's CPU/RAM usage to TTN via script. ===
312
313 ==== Take python as an example： ====
314
315 ===== Preconditions: =====
316
317 1.LA66 USB LoRaWAN Adapter works fine
318
319 2.LA66 USB LoRaWAN Adapter  is registered with TTN
320
321 ===== Steps for usage =====
322
323 1.Press the reset switch RESET on the LA66 USB LoRaWAN Adapter
324
325 2.Run the script and see the TTN
326
327 [[image:image-20220602115852-3.png]]
328
329
330
331 == Example: LA66 USB Module got a message from LA66 LoRa Shield and send the sensor data to NodeRed. ==
332
333
334 == Upgrade Firmware of LA66 USB LoRaWAN Adapter ==
335
336

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