Skip to Content

Wiki source code of LA66 LoRaWAN Module

Version 87.2 by Xiaoling on 2022/07/13 09:34
Show last authors
1
2
3 {{box cssClass="floatinginfobox" title="**Contents**"}}
4 {{toc/}}
5 {{/box}}
6
7 {{toc/}}
8
9
10
11 = 1.  LA66 LoRaWAN Module =
12
13
14 == 1.1  What is LA66 LoRaWAN Module ==
15
16
17 (% 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.
18
19 (% 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.
20
21 Each LA66 module includes a (% style="color:blue" %)**world-unique OTAA key**(%%) for LoRaWAN registration.
22
23 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.
24
25 LA66 is equipped with (% style="color:blue" %)**TCXO crystal**(%%) which ensures the module can achieve stable performance in extreme temperatures.
26
27
28 == 1.2  Features ==
29
30 * Support LoRaWAN v1.0.4 protocol
31 * Support peer-to-peer protocol
32 * TCXO crystal to ensure RF performance on low temperature
33 * SMD Antenna pad and i-pex antenna connector
34 * Available in different frequency LoRaWAN frequency bands.
35 * World-wide unique OTAA keys.
36 * AT Command via UART-TTL interface
37 * Firmware upgradable via UART interface
38 * Ultra-long RF range
39
40
41 == 1.3  Specification ==
42
43 * CPU: 32-bit 48 MHz
44 * Flash: 256KB
45 * RAM: 64KB
46 * Input Power Range: 1.8v ~~ 3.7v
47 * Power Consumption: < 4uA.
48 * Frequency Range: 150 MHz ~~ 960 MHz
49 * Maximum Power +22 dBm constant RF output
50 * High sensitivity: -148 dBm
51 * Temperature:
52 ** Storage: -55 ~~ +125℃
53 ** Operating: -40 ~~ +85℃
54 * Humidity:
55 ** Storage: 5 ~~ 95% (Non-Condensing)
56 ** Operating: 10 ~~ 95% (Non-Condensing)
57 * LoRa Tx Current: <90 mA at +17 dBm, 108 mA at +22 dBm
58 * LoRa Rx current: <9 mA
59 * I/O Voltage: 3.3v
60
61
62 == 1.4  AT Command ==
63
64 AT Command is valid over Main TXD and Main RXD. Serial Baud Rate is 9600. AT commands can be found in AT Command documents.
65
66
67 == 1.5  Dimension ==
68
69 [[image:image-20220517072526-1.png]]
70
71
72
73 == 1.6  Pin Mapping ==
74
75
76 [[image:image-20220523101537-1.png]]
77
78
79
80 == 1.7  Land Pattern ==
81
82 [[image:image-20220517072821-2.png]]
83
84
85
86 = 2.  LA66 LoRaWAN Shield =
87
88
89 == 2.1  Overview ==
90
91 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.
92
93
94 == 2.2  Features ==
95
96 * Arduino Shield base on LA66 LoRaWAN module
97 * Support LoRaWAN v1.0.4 protocol
98 * Support peer-to-peer protocol
99 * TCXO crystal to ensure RF performance on low temperature
100 * SMA connector
101 * Available in different frequency LoRaWAN frequency bands.
102 * World-wide unique OTAA keys.
103 * AT Command via UART-TTL interface
104 * Firmware upgradable via UART interface
105 * Ultra-long RF range
106
107
108 == 2.3  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
129 == 2.4  Pin Mapping & LED ==
130
131
132
133 == 2.5  Example: Use AT Command to communicate with LA66 module via Arduino UNO. ==
134
135
136
137 == 2.6  Example: Join TTN network and send an uplink message, get downlink message. ==
138
139
140
141 == 2.7  Example: Log Temperature Sensor(DHT11) and send data to TTN, show it in DataCake. ==
142
143
144
145 == 2.8  Upgrade Firmware of LA66 LoRaWAN Shield ==
146
147
148 === 2.8.1  Items needed for update ===
149
150 1. LA66 LoRaWAN Shield
151 1. Arduino
152 1. USB TO TTL Adapter
153
154 [[image:image-20220602100052-2.png||height="385" width="600"]]
155
156
157 === 2.8.2  Connection ===
158
159
160 [[image:image-20220602101311-3.png||height="276" width="600"]]
161
162
163 (% style="color:blue" %)**LA66 LoRaWAN Shield**(%%)  **<->** (% style="color:blue" %)**USB TTL**
164
165
166 (% style="background-color:yellow" %)**GND  <-> GND
167 TXD  <->  TXD
168 RXD  <->  RXD**
169
170
171 Put a jumper cap on JP6 of LA66 LoRaWAN Shield. ( the jumper is to power on LA66 module)
172
173 Connect USB TTL Adapter to PC after connecting the wires
174
175
176 [[image:image-20220602102240-4.png||height="304" width="600"]]
177
178
179 === 2.8.3  Upgrade steps ===
180
181
182 ==== 1.  Switch SW1 to put in ISP position ====
183
184
185 [[image:image-20220602102824-5.png||height="306" width="600"]]
186
187
188 ==== 2.  Press the RST switch once ====
189
190 [[image:image-20220602104701-12.png||height="285" width="600"]]
191
192
193 ==== 3.  Open the Upgrade tool (Tremo Programmer) in PC and Upgrade ====
194
195
196 (% style="color:blue" %)**1. 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/]]**
197
198
199 [[image:image-20220602103227-6.png]]
200
201
202 [[image:image-20220602103357-7.png]]
203
204
205
206 (% class="wikigeneratedid" id="HSelecttheCOMportcorrespondingtoUSBTTL" %)
207 (% style="color:blue" %)**2. Select the COM port corresponding to USB TTL**
208
209
210 [[image:image-20220602103844-8.png]]
211
212
213
214 (% class="wikigeneratedid" id="HSelectthebinfiletoburn" %)
215 (% style="color:blue" %)**3. Select the bin file to burn**
216
217
218 [[image:image-20220602104144-9.png]]
219
220
221 [[image:image-20220602104251-10.png]]
222
223
224 [[image:image-20220602104402-11.png]]
225
226
227
228 (% class="wikigeneratedid" id="HClicktostartthedownload" %)
229 (% style="color:blue" %)**4. Click to start the download**
230
231 [[image:image-20220602104923-13.png]]
232
233
234 (% class="wikigeneratedid" id="HThefollowingfigureappearstoprovethattheburningisinprogress" %)
235 (% style="color:blue" %)**5. Check update process**
236
237
238 [[image:image-20220602104948-14.png]]
239
240
241
242 (% class="wikigeneratedid" id="HThefollowingpictureappearstoprovethattheburningissuccessful" %)
243 (% style="color:blue" %)**The following picture shows that the burning is successful**
244
245 [[image:image-20220602105251-15.png]]
246
247
248
249 = 3.  LA66 USB LoRaWAN Adapter =
250
251
252 == 3.1  Overview ==
253
254 LA66 USB LoRaWAN Adapter is designed to fast turn USB devices to support LoRaWAN wireless features. It combines a CP2101 USB TTL Chip and LA66 LoRaWAN module which can easy to add LoRaWAN wireless feature to PC / Mobile phone or an embedded device that has USB Interface.
255
256
257 == 3.2  Features ==
258
259 * LoRaWAN USB adapter base on LA66 LoRaWAN module
260 * Ultra-long RF range
261 * Support LoRaWAN v1.0.4 protocol
262 * Support peer-to-peer protocol
263 * TCXO crystal to ensure RF performance on low temperature
264 * Spring RF antenna
265 * Available in different frequency LoRaWAN frequency bands.
266 * World-wide unique OTAA keys.
267 * AT Command via UART-TTL interface
268 * Firmware upgradable via UART interface
269
270 == Specification ==
271
272 * CPU: 32-bit 48 MHz
273 * Flash: 256KB
274 * RAM: 64KB
275 * Input Power Range: 5v
276 * Frequency Range: 150 MHz ~~ 960 MHz
277 * Maximum Power +22 dBm constant RF output
278 * High sensitivity: -148 dBm
279 * Temperature:
280 ** Storage: -55 ~~ +125℃
281 ** Operating: -40 ~~ +85℃
282 * Humidity:
283 ** Storage: 5 ~~ 95% (Non-Condensing)
284 ** Operating: 10 ~~ 95% (Non-Condensing)
285 * LoRa Tx Current: <90 mA at +17 dBm, 108 mA at +22 dBm
286 * LoRa Rx current: <9 mA
287
288 == Pin Mapping & LED ==
289
290 == Example Send & Get Messages via LoRaWAN in PC ==
291
292 Assume user already input the LA66 USB LoRaWAN Adapter OTAA Keys in TTN and there is already TTN network coverage.
293
294 ~1. Connect the LA66 USB LoRaWAN adapter to PC
295
296 [[image:image-20220602171217-1.png||height="538" width="800"]]
297
298 Open the serial port tool
299
300 [[image:image-20220602161617-8.png]]
301
302 [[image:image-20220602161718-9.png||height="457" width="800"]]
303
304
305 2. Press the reset switch RST on the LA66 USB LoRaWAN Adapter to reset it.
306
307 The following picture appears to prove that the LA66 USB LoRaWAN Adapter successfully Join the LoRaWAN network
308
309 [[image:image-20220602161935-10.png||height="498" width="800"]]
310
311
312 3. See Uplink Command
313
314 Command format: AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data>
315
316 example: AT+SENDB=01,02,8,05820802581ea0a5
317
318 [[image:image-20220602162157-11.png||height="497" width="800"]]
319
320
321 4. Check to see if TTN received the message
322
323 [[image:image-20220602162331-12.png||height="420" width="800"]]
324
325
326
327 == Example:Send PC's CPU/RAM usage to TTN via python ==
328
329 (% class="wikigeneratedid" id="HUsepythonasanexampleFF1A" %)
330 **Use python as an example：**[[https:~~/~~/github.com/dragino/LA66/blob/main/Send_information_to_TTN_WindosPC.py>>https://github.com/dragino/LA66/blob/main/Send_information_to_TTN_WindosPC.py]]
331
332 (% class="wikigeneratedid" id="HPreconditions:" %)
333 **Preconditions:**
334
335 1.LA66 USB LoRaWAN Adapter works fine
336
337 2.LA66 USB LoRaWAN Adapter  is registered with TTN
338
339 (% class="wikigeneratedid" id="HStepsforusage" %)
340 **Steps for usage**
341
342 1.Press the reset switch RESET on the LA66 USB LoRaWAN Adapter
343
344 2.Run the python script in PC and see the TTN
345
346 [[image:image-20220602115852-3.png||height="450" width="1187"]]
347
348
349
350 == Example Send & Get Messages via LoRaWAN in RPi ==
351
352 Assume user already input the LA66 USB LoRaWAN Adapter OTAA Keys in TTN and there is already TTN network coverage.
353
354 ~1. Connect the LA66 USB LoRaWAN Adapter to the Raspberry Pi
355
356 [[image:image-20220602171233-2.png||height="538" width="800"]]
357
358
359 2. Install Minicom in RPi.
360
361 (% id="cke_bm_509388S" style="display:none" %) (%%)Enter the following command in the RPi terminal
362
363 (% class="mark" %)apt update
364
365 (% class="mark" %)apt install minicom
366
367
368 Use minicom to connect to the RPI's terminal
369
370 [[image:image-20220602153146-3.png||height="439" width="500"]]
371
372
373 3. Press the reset switch RST on the LA66 USB LoRaWAN Adapter.
374 The following picture appears to prove that the LA66 USB LoRaWAN Adapter successfully entered the network
375
376 [[image:image-20220602154928-5.png||height="436" width="500"]]
377
378
379 4. Send Uplink message
380
381 Format: AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data>
382
383 example: AT+SENDB=01,02,8,05820802581ea0a5
384
385 [[image:image-20220602160339-6.png||height="517" width="600"]]
386
387 Check to see if TTN received the message
388
389 [[image:image-20220602160627-7.png||height="369" width="800"]]
390
391
392
393 == Example: LA66 USB Module got a message from LA66 LoRa Shield and send the sensor data to NodeRed. ==
394
395
396 == Upgrade Firmware of LA66 USB LoRaWAN Adapter ==
397
398
399
400 = Order Info =
401
402 Part Number:
403
404 **LA66-XXX**, **LA66-LoRaWAN-Shield-XXX** or **LA66-USB-LoRaWAN-Adapter-XXX**
405
406 **XXX**: The default frequency band
407
408 * **AS923**: LoRaWAN AS923 band
409 * **AU915**: LoRaWAN AU915 band
410 * **EU433**: LoRaWAN EU433 band
411 * **EU868**: LoRaWAN EU868 band
412 * **KR920**: LoRaWAN KR920 band
413 * **US915**: LoRaWAN US915 band
414 * **IN865**: LoRaWAN IN865 band
415 * **CN470**: LoRaWAN CN470 band
416 * **PP**: Peer to Peer LoRa Protocol
417
418 = Reference =
419
420 * Hardware Design File for LA66 LoRaWAN Shield, LA66 USB LoRaWAN Adapter : [[Download>>https://www.dropbox.com/sh/a3wbmdcvqjxaqw5/AADZfvAiykJTK624RgMquH86a?dl=0]]
421
422