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Last modified by Xiaoling on 2023/09/19 09:20
From version 162.2
edited by Xiaoling
on 2023/06/05 15:32
Change comment: There is no comment for this version
To version 130.1
edited by Herong Lu
on 2022/07/23 17:39
Change comment: Uploaded new attachment "image-20220723173950-11.png", version {1}

Summary

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Title
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1 -LA66 LoRaWAN Module User Manual
1 +LA66 LoRaWAN Module
Author
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1 -XWiki.Xiaoling
1 +XWiki.Lu
Content
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1 -
1 +0
2 2  
3 3  **Table of Contents:**
4 4  
... ... @@ -8,6 +8,7 @@
8 8  
9 9  = 1.  LA66 LoRaWAN Module =
10 10  
11 +
11 11  == 1.1  What is LA66 LoRaWAN Module ==
12 12  
13 13  
... ... @@ -48,10 +48,10 @@
48 48  )))
49 49  
50 50  
52 +
51 51  == 1.2  Features ==
52 52  
53 -
54 -* Support LoRaWAN v1.0.3 protocol
55 +* Support LoRaWAN v1.0.4 protocol
55 55  * Support peer-to-peer protocol
56 56  * TCXO crystal to ensure RF performance on low temperature
57 57  * SMD Antenna pad and i-pex antenna connector
... ... @@ -63,7 +63,6 @@
63 63  
64 64  == 1.3  Specification ==
65 65  
66 -
67 67  * CPU: 32-bit 48 MHz
68 68  * Flash: 256KB
69 69  * RAM: 64KB
... ... @@ -85,169 +85,547 @@
85 85  == 1.4  AT Command ==
86 86  
87 87  
88 -AT Command is valid over Main TXD and Main RXD. Serial Baud Rate is 9600. AT commands can be found in[[ AT Command documents>>https://www.dropbox.com/sh/wtq43za8sykpgta/AABAEE02uEAsRU-JV7bzEhMba?dl=0]].
88 +AT Command is valid over Main TXD and Main RXD. Serial Baud Rate is 9600. AT commands can be found in AT Command documents.
89 89  
90 90  
91 +
91 91  == 1.5  Dimension ==
92 92  
93 -
94 94  [[image:image-20220718094750-3.png]]
95 95  
96 96  
97 +
97 97  == 1.6  Pin Mapping ==
98 98  
99 99  [[image:image-20220720111850-1.png]]
100 100  
101 101  
103 +
102 102  == 1.7  Land Pattern ==
103 103  
104 -
105 105  [[image:image-20220517072821-2.png]]
106 106  
107 107  
108 -= 2.  FAQ =
109 109  
110 -== 2.1  Where to find examples of how to use LA66? ==
110 += 2.  LA66 LoRaWAN Shield =
111 111  
112 112  
113 -(% class="wikigeneratedid" %)
114 -Below products are made by LA66. User can use their examples as reference:
113 +== 2.1  Overview ==
115 115  
116 -* [[LA66 Shield for Arduino>>doc:Main.User Manual for LoRaWAN End Nodes.LA66 LoRaWAN Shield User Manual.WebHome]]
117 -* [[LA66 USB Adapter>>doc:Main.User Manual for LoRaWAN End Nodes.LA66 USB LoRaWAN Adapter User Manual.WebHome]]
118 118  
119 -== 2.2  How to Compile Source Code for LA66? ==
116 +(((
117 +[[image:image-20220715000826-2.png||height="145" width="220"]]
118 +)))
120 120  
120 +(((
121 +
122 +)))
121 121  
122 -Compile and Upload Code to ASR6601 Platform：[[Instruction>>Compile and Upload Code to ASR6601 Platform]]
124 +(((
125 +(% style="color:blue" %)**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.
126 +)))
123 123  
128 +(((
129 +(((
130 +(% style="color:blue" %)**LA66**(%%) is a ready-to-use module that includes the (% style="color:blue" %)**LoRaWAN v1.0.3 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.
131 +)))
132 +)))
124 124  
125 -== 2.3  Can i use LA66 module's internal I/O without external MCU, So to save product cost? ==
134 +(((
135 +(((
136 +Each LA66 module includes a (% style="color:blue" %)**world-unique OTAA key**(%%) for LoRaWAN registration.
137 +)))
138 +)))
126 126  
140 +(((
141 +(((
142 +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.
143 +)))
144 +)))
127 127  
128 -Yes, this is possible, user can refer[[ the source code from ASR >>https://github.com/asrlora/asr_lora_6601/tree/master/projects/ASR6601SE-EVAL/examples/lora]]to get examples for how to its I/O Interfaces.
146 +(((
147 +(((
148 +LA66 is equipped with (% style="color:blue" %)**TCXO crystal**(%%) which ensures the module can achieve stable performance in extreme temperatures.
149 +)))
150 +)))
129 129  
130 130  
131 -== 2.4  Where to find Peer-to-Peer firmware of LA66? ==
132 132  
154 +== 2.2  Features ==
133 133  
134 -Instruction for LA66 Peer to Peer firmware :[[ Instruction >>doc:Main.User Manual for LoRaWAN End Nodes.LA66 LoRaWAN Shield User Manual.Instruction for LA66 Peer to Peer firmware.WebHome]]
156 +* Arduino Shield base on LA66 LoRaWAN module
157 +* Support LoRaWAN v1.0.4 protocol
158 +* Support peer-to-peer protocol
159 +* TCXO crystal to ensure RF performance on low temperature
160 +* SMA connector
161 +* Available in different frequency LoRaWAN frequency bands.
162 +* World-wide unique OTAA keys.
163 +* AT Command via UART-TTL interface
164 +* Firmware upgradable via UART interface
165 +* Ultra-long RF range
135 135  
167 +== 2.3  Specification ==
136 136  
137 -== 2.5 How can i use J-LInk to debug LA66? ==
169 +* CPU: 32-bit 48 MHz
170 +* Flash: 256KB
171 +* RAM: 64KB
172 +* Input Power Range: 1.8v ~~ 3.7v
173 +* Power Consumption: < 4uA.
174 +* Frequency Range: 150 MHz ~~ 960 MHz
175 +* Maximum Power +22 dBm constant RF output
176 +* High sensitivity: -148 dBm
177 +* Temperature:
178 +** Storage: -55 ~~ +125℃
179 +** Operating: -40 ~~ +85℃
180 +* Humidity:
181 +** Storage: 5 ~~ 95% (Non-Condensing)
182 +** Operating: 10 ~~ 95% (Non-Condensing)
183 +* LoRa Tx Current: <90 mA at +17 dBm, 108 mA at +22 dBm
184 +* LoRa Rx current: <9 mA
185 +* I/O Voltage: 3.3v
138 138  
187 +== 2.4  LED ==
139 139  
140 -(% style="color:#037691" %)**The steps are as follows:**
189 +~1. The LED lights up red when there is an upstream data packet
190 +2. When the network is successfully connected, the green light will be on for 5 seconds
191 +3. Purple light on when receiving downlink data packets
141 141  
142 142  
143 -(% style="color:blue" %)**1. Install J-Link software from**
194 +== 2.5  Example: Use AT Command to communicate with LA66 module via Arduino UNO. ==
144 144  
145 -[[https:~~/~~/www.segger.com/downloads/jlink/>>url:https://www.segger.com/downloads/jlink/]]
196 +Show connection diagram：
146 146  
198 +[[image:image-20220723170210-2.png||height="908" width="681"]]
147 147  
148 -(% style="color:blue" %)**2. Expose PA6 / PA7 / RSTN of LA66.**
200 +1.open Arduino IDE
149 149  
202 +[[image:image-20220723170545-4.png]]
150 150  
151 -[[image:image-20230605151850-1.png]]
204 +2.Open project
152 152  
206 +[[image:image-20220723170750-5.png]]
153 153  
154 -[[image:image-20230605151850-2.png]]
208 +3.Click the button marked 1 in the figure to compile, and after the compilation is complete, click the button marked 2 in the figure to upload
155 155  
210 +[[image:image-20220723171228-6.png]]
156 156  
157 -(% style="color:blue" %)**3. Connect JLINK, and switch mother board SW1 to ISP. Wire connection as below:**
212 +4.After the upload is successful, open the serial port monitoring and send the AT command
158 158  
159 -**LA66 PA6 < ~-~- > JLINK SWDIO (Pin 7)**
160 160  
161 -**LA66 PA7 < ~-~- > JLINK SWCLK (Pin 9)**
215 +== 2.6  Example: Join TTN network and send an uplink message, get downlink message. ==
162 162  
163 -**LA66 RSTN < ~-~- > JLINK RESET (Pin 15)**
164 164  
165 -**LA66 GND  < ~-~- > JLINK GND (Pin 8)**
166 166  
167 -[[image:image-20230605151850-3.png||height="629" width="1182"]]
219 +== 2.7  Example: Log Temperature Sensor(DHT11) and send data to TTN, show it in DataCake. ==
168 168  
169 -(% style="display:none" %) (%%)
170 170  
171 -(% style="color:blue" %)**4. Copy \SN50v3\tools\FLM\ASR6601.FLM to \Keil\ARM\ Flash\**
172 172  
173 -(% style="display:none" %) [[image:image-20230605151850-4.png]]
223 +== 2.8  Upgrade Firmware of LA66 LoRaWAN Shield ==
174 174  
175 175  
176 -(% style="color:blue" %)**Add ASR6601 256KB Flash to Flash Download**
226 +=== 2.8.1  Items needed for update ===
177 177  
178 -[[image:image-20230605152412-12.png]]
228 +1. LA66 LoRaWAN Shield
229 +1. Arduino
230 +1. USB TO TTL Adapter
179 179  
232 +[[image:image-20220602100052-2.png||height="385" width="600"]]
180 180  
181 -[[image:image-20230605151851-6.png]]
182 182  
235 +=== 2.8.2  Connection ===
183 183  
184 -(% style="color:blue" %)**5. Modify \SN50v3\Projects\Applications\DRAGINO-LRWAN-AT\cfg\gcc.ld, to 0x08000000.**
185 185  
186 -[[image:image-20230605151851-7.png]]
238 +[[image:image-20220602101311-3.png||height="276" width="600"]]
187 187  
188 -[[image:image-20230605151851-8.png]]
189 189  
241 +(((
242 +(% style="color:blue" %)**LA66 LoRaWAN Shield**(%%)  **<->** (% style="color:blue" %)**USB TTL**
243 +)))
190 190  
191 -(% style="color:red" %)Note**: After debug, user should change the Flash address back to 0x0800D000, and upload the OTA bootloader to LA66. Otherwise, the compiled program doesn’t support OTA update.**
245 +(((
246 +(% style="background-color:yellow" %)**GND  <-> GND
247 +TXD  <->  TXD
248 +RXD  <->  RXD**
249 +)))
192 192  
193 193  
194 -(% style="color:blue" %)**6. Comment the low power function in main.c.**
252 +Put a jumper cap on JP6 of LA66 LoRaWAN Shield. ( the jumper is to power on LA66 module)
195 195  
254 +Connect USB TTL Adapter to PC after connecting the wires
196 196  
197 -[[image:image-20230605151851-9.png]]
198 198  
257 +[[image:image-20220602102240-4.png||height="304" width="600"]]
199 199  
200 -(% style="color:blue" %)**Click Debug mode to debug.**
201 201  
202 -[[image:image-20230605151851-10.png||height="293" width="1275"]]
260 +=== 2.8.3  Upgrade steps ===
203 203  
204 204  
205 -[[image:image-20230605151851-11.png||height="739" width="1275"]](% style="display:none" %)
263 +==== 1.  Switch SW1 to put in ISP position ====
206 206  
207 -(% style="display:none" %) (%%)
208 208  
209 -= 3.  Order Info =
266 +[[image:image-20220602102824-5.png||height="306" width="600"]]
210 210  
211 211  
212 -**Part Number:**  (% style="color:blue" %)**LA66-XXX**
213 213  
214 -(% style="color:blue" %)**XXX**(%%): The default frequency band
270 +==== 2.  Press the RST switch once ====
215 215  
216 -* (% style="color:red" %)**AS923**(%%):  LoRaWAN AS923 band
217 -* (% style="color:red" %)**AU915**(%%):  LoRaWAN AU915 band
218 -* (% style="color:red" %)**EU433**(%%):  LoRaWAN EU433 band
219 -* (% style="color:red" %)**EU868**(%%):  LoRaWAN EU868 band
220 -* (% style="color:red" %)**KR920**(%%):  LoRaWAN KR920 band
221 -* (% style="color:red" %)**US915**(%%):  LoRaWAN US915 band
222 -* (% style="color:red" %)**IN865**(%%):  LoRaWAN IN865 band
223 -* (% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
224 -* (% style="color:red" %)**PP**(%%):  Peer to Peer LoRa Protocol
225 225  
226 -= 4.  FCC Statement =
273 +[[image:image-20220602104701-12.png||height="285" width="600"]]
227 227  
228 228  
229 -(% style="color:red" %)**FCC Caution:**
230 230  
231 -Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
277 +==== 3.  Open the Upgrade tool (Tremo Programmer) in PC and Upgrade ====
232 232  
233 -This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
234 234  
280 +(((
281 +(% 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/]]**
282 +)))
235 235  
236 -(% style="color:red" %)**IMPORTANT NOTE: **
237 237  
238 -(% style="color:red" %)**Note:**(%%) This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
285 +[[image:image-20220602103227-6.png]]
239 239  
240 -—Reorient or relocate the receiving antenna.
241 241  
242 -—Increase the separation between the equipment and receiver.
288 +[[image:image-20220602103357-7.png]]
243 243  
244 -—Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
245 245  
246 -—Consult the dealer or an experienced radio/TV technician for help.
247 247  
292 +(% class="wikigeneratedid" id="HSelecttheCOMportcorrespondingtoUSBTTL" %)
293 +(% style="color:blue" %)**2. Select the COM port corresponding to USB TTL**
248 248  
249 -(% style="color:red" %)**FCC Radiation Exposure Statement: **
250 250  
251 -This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment.This equipment should be installed and operated with minimum distance 20cm between the radiator& your body.
296 +[[image:image-20220602103844-8.png]]
252 252  
253 -
298 +
299 +
300 +(% class="wikigeneratedid" id="HSelectthebinfiletoburn" %)
301 +(% style="color:blue" %)**3. Select the bin file to burn**
302 +
303 +
304 +[[image:image-20220602104144-9.png]]
305 +
306 +
307 +[[image:image-20220602104251-10.png]]
308 +
309 +
310 +[[image:image-20220602104402-11.png]]
311 +
312 +
313 +
314 +(% class="wikigeneratedid" id="HClicktostartthedownload" %)
315 +(% style="color:blue" %)**4. Click to start the download**
316 +
317 +[[image:image-20220602104923-13.png]]
318 +
319 +
320 +
321 +(% class="wikigeneratedid" id="HThefollowingfigureappearstoprovethattheburningisinprogress" %)
322 +(% style="color:blue" %)**5. Check update process**
323 +
324 +
325 +[[image:image-20220602104948-14.png]]
326 +
327 +
328 +
329 +(% class="wikigeneratedid" id="HThefollowingpictureappearstoprovethattheburningissuccessful" %)
330 +(% style="color:blue" %)**The following picture shows that the burning is successful**
331 +
332 +[[image:image-20220602105251-15.png]]
333 +
334 +
335 +
336 += 3.  LA66 USB LoRaWAN Adapter =
337 +
338 +
339 +== 3.1  Overview ==
340 +
341 +
342 +[[image:image-20220715001142-3.png||height="145" width="220"]]
343 +
344 +
345 +(((
346 +(% style="color:blue" %)**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.
347 +)))
348 +
349 +(((
350 +(% style="color:blue" %)**LA66**(%%) is a ready-to-use module that includes the (% style="color:blue" %)**LoRaWAN v1.0.3 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.
351 +)))
352 +
353 +(((
354 +Each LA66 module includes a (% style="color:blue" %)**world-unique OTAA key**(%%) for LoRaWAN registration.
355 +)))
356 +
357 +(((
358 +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.
359 +)))
360 +
361 +(((
362 +LA66 is equipped with (% style="color:blue" %)**TCXO crystal**(%%) which ensures the module can achieve stable performance in extreme temperatures.
363 +)))
364 +
365 +
366 +
367 +== 3.2  Features ==
368 +
369 +* LoRaWAN USB adapter base on LA66 LoRaWAN module
370 +* Ultra-long RF range
371 +* Support LoRaWAN v1.0.4 protocol
372 +* Support peer-to-peer protocol
373 +* TCXO crystal to ensure RF performance on low temperature
374 +* Spring RF antenna
375 +* Available in different frequency LoRaWAN frequency bands.
376 +* World-wide unique OTAA keys.
377 +* AT Command via UART-TTL interface
378 +* Firmware upgradable via UART interface
379 +* Open Source Mobile App for LoRaWAN signal detect and GPS tracking.
380 +
381 +== 3.3  Specification ==
382 +
383 +* CPU: 32-bit 48 MHz
384 +* Flash: 256KB
385 +* RAM: 64KB
386 +* Input Power Range: 5v
387 +* Frequency Range: 150 MHz ~~ 960 MHz
388 +* Maximum Power +22 dBm constant RF output
389 +* High sensitivity: -148 dBm
390 +* Temperature:
391 +** Storage: -55 ~~ +125℃
392 +** Operating: -40 ~~ +85℃
393 +* Humidity:
394 +** Storage: 5 ~~ 95% (Non-Condensing)
395 +** Operating: 10 ~~ 95% (Non-Condensing)
396 +* LoRa Tx Current: <90 mA at +17 dBm, 108 mA at +22 dBm
397 +* LoRa Rx current: <9 mA
398 +
399 +== 3.4  Pin Mapping & LED ==
400 +
401 +
402 +
403 +== 3.5  Example: Send & Get Messages via LoRaWAN in PC ==
404 +
405 +
406 +(((
407 +Assume user already input the LA66 USB LoRaWAN Adapter OTAA Keys in TTN and there is already TTN network coverage.
408 +)))
409 +
410 +
411 +(% style="color:blue" %)**1. Connect the LA66 USB LoRaWAN adapter to PC**
412 +
413 +
414 +[[image:image-20220723100027-1.png]]
415 +
416 +
417 +Open the serial port tool
418 +
419 +[[image:image-20220602161617-8.png]]
420 +
421 +[[image:image-20220602161718-9.png||height="457" width="800"]]
422 +
423 +
424 +
425 +(% style="color:blue" %)**2. Press the reset switch RST on the LA66 USB LoRaWAN Adapter to reset it.**
426 +
427 +The following picture appears to prove that the LA66 USB LoRaWAN Adapter successfully Join the LoRaWAN network
428 +
429 +
430 +[[image:image-20220602161935-10.png||height="498" width="800"]]
431 +
432 +
433 +
434 +(% style="color:blue" %)**3. See Uplink Command**
435 +
436 +Command format: (% style="color:#4472c4" %)** AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data>**
437 +
438 +example: AT+SENDB=01,02,8,05820802581ea0a5
439 +
440 +[[image:image-20220602162157-11.png||height="497" width="800"]]
441 +
442 +
443 +
444 +(% style="color:blue" %)**4. Check to see if TTN received the message**
445 +
446 +[[image:image-20220602162331-12.png||height="420" width="800"]]
447 +
448 +
449 +
450 +== 3.6  Example: Send PC's CPU/RAM usage to TTN via python ==
451 +
452 +
453 +**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]]
454 +
455 +(**Raspberry Pi example: **[[https:~~/~~/github.com/dragino/LA66/blob/main/Send_information_to_TTN_Raspberry%20Pi.py>>https://github.com/dragino/LA66/blob/main/Send_information_to_TTN_Raspberry%20Pi.py]])
456 +
457 +(% style="color:red" %)**Preconditions:**
458 +
459 +(% style="color:red" %)**1. LA66 USB LoRaWAN Adapter works fine**
460 +
461 +(% style="color:red" %)**2. LA66 USB LoRaWAN Adapter  is registered with TTN**
462 +
463 +
464 +
465 +(% style="color:blue" %)**Steps for usage:**
466 +
467 +(% style="color:blue" %)**1.**(%%) Press the reset switch RESET on the LA66 USB LoRaWAN Adapter
468 +
469 +(% style="color:blue" %)**2.**(%%) Run the python script in PC and see the TTN
470 +
471 +[[image:image-20220602115852-3.png||height="450" width="1187"]]
472 +
473 +
474 +
475 +== 3.7  Example: Send & Get Messages via LoRaWAN in RPi ==
476 +
477 +
478 +Assume user already input the LA66 USB LoRaWAN Adapter OTAA Keys in TTN and there is already TTN network coverage.
479 +
480 +
481 +(% style="color:blue" %)**1. Connect the LA66 USB LoRaWAN Adapter to the Raspberry Pi**
482 +
483 +[[image:image-20220723100439-2.png]]
484 +
485 +
486 +
487 +(% style="color:blue" %)**2. Install Minicom in RPi.**
488 +
489 +(% id="cke_bm_509388S" style="display:none" %) (%%)Enter the following command in the RPi terminal
490 +
491 + (% style="background-color:yellow" %)**apt update**
492 +
493 + (% style="background-color:yellow" %)**apt install minicom**
494 +
495 +
496 +Use minicom to connect to the RPI's terminal
497 +
498 +[[image:image-20220602153146-3.png||height="439" width="500"]]
499 +
500 +
501 +
502 +(% style="color:blue" %)**3. Press the reset switch RST on the LA66 USB LoRaWAN Adapter.**
503 +
504 +The following picture appears to prove that the LA66 USB LoRaWAN Adapter successfully entered the network.
505 +
506 +
507 +[[image:image-20220602154928-5.png||height="436" width="500"]]
508 +
509 +
510 +
511 +(% style="color:blue" %)**4. Send Uplink message**
512 +
513 +Format: (% style="color:#4472c4" %)**AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data>**
514 +
515 +example: AT+SENDB=01,02,8,05820802581ea0a5
516 +
517 +
518 +[[image:image-20220602160339-6.png||height="517" width="600"]]
519 +
520 +
521 +
522 +Check to see if TTN received the message
523 +
524 +[[image:image-20220602160627-7.png||height="369" width="800"]]
525 +
526 +
527 +
528 +== 3.8  Example: Use of LA66 USB LoRaWAN Module and DRAGINO-LA66-APP. ==
529 +
530 +=== 3.8.1 DRAGINO-LA66-APP ===
531 +
532 +[[image:image-20220723102027-3.png]]
533 +
534 +==== Overview： ====
535 +
536 +DRAGINO-LA66-APP is a mobile APP for LA66 USB LoRaWAN Module. DRAGINO-LA66-APP can obtain the positioning information of the mobile phone and send it to the LoRaWAN platform through the LA66 USB LoRaWAN Module.
537 +
538 +View the communication signal strength between the node and the gateway through the RSSI value（DRAGINO-LA66-APP currently only supports Android system）
539 +
540 +==== Conditions of Use： ====
541 +
542 +Requires a type-c to USB adapter
543 +
544 +[[image:image-20220723104754-4.png]]
545 +
546 +==== Use of APP: ====
547 +
548 +Function and page introduction
549 +
550 +[[image:image-20220723113448-7.png||height="1481" width="670"]]
551 +
552 +1.Display LA66 USB LoRaWAN Module connection status
553 +
554 +2.Check and reconnect
555 +
556 +3.Turn send timestamps on or off
557 +
558 +4.Display LoRaWan connection status
559 +
560 +5.Check LoRaWan connection status
561 +
562 +6.The RSSI value of the node when the ACK is received
563 +
564 +7.Node's Signal Strength Icon
565 +
566 +8.Set the packet sending interval of the node in seconds
567 +
568 +9.AT command input box
569 +
570 +10.Send AT command button
571 +
572 +11.Node log box
573 +
574 +12.clear log button
575 +
576 +13.exit button
577 +
578 +LA66 USB LoRaWAN Module not connected
579 +
580 +[[image:image-20220723110520-5.png||height="903" width="677"]]
581 +
582 +Connect LA66 USB LoRaWAN Module
583 +
584 +[[image:image-20220723110626-6.png||height="906" width="680"]]
585 +
586 +=== 3.8.2 Use DRAGINO-LA66-APP to obtain positioning information and send it to TTNV3 through LA66 USB LoRaWAN Module and integrate it into Node-RED ===
587 +
588 +1.Register LA66 USB LoRaWAN Module to TTNV3
589 +
590 +[[image:image-20220723134549-8.png]]
591 +
592 +2.Open Node-RED,And import the JSON file to generate the flow
593 +
594 +Sample JSON file please go to this link to download：放置JSON文件的链接
595 +
596 +For the usage of Node-RED, please refer to: [[http:~~/~~/8.211.40.43:8080/xwiki/bin/view/Main/Node-RED/>>http://8.211.40.43:8080/xwiki/bin/view/Main/Node-RED/]]
597 +
598 +The following is the positioning effect map
599 +
600 +[[image:image-20220723144339-1.png]]
601 +
602 +== 3.9  Upgrade Firmware of LA66 USB LoRaWAN Adapter ==
603 +
604 +The LA66 USB LoRaWAN Module is the same as the LA66 LoRaWAN Shield update method
605 +
606 +Just use the yellow jumper cap to short the BOOT corner and the RX corner, and then press the RESET button (without the jumper cap, you can directly short the BOOT corner and the RX corner with a wire to achieve the same effect)
607 +
608 +[[image:image-20220723150132-2.png]]
609 +
610 +
611 += 4.  Order Info =
612 +
613 +
614 +**Part Number:**  (% style="color:blue" %)**LA66-XXX**(%%), (% style="color:blue" %)**LA66-LoRaWAN-Shield-XXX** (%%) **or**  (% style="color:blue" %)**LA66-USB-LoRaWAN-Adapter-XXX**
615 +
616 +
617 +(% style="color:blue" %)**XXX**(%%): The default frequency band
618 +
619 +* (% style="color:red" %)**AS923**(%%):  LoRaWAN AS923 band
620 +* (% style="color:red" %)**AU915**(%%):  LoRaWAN AU915 band
621 +* (% style="color:red" %)**EU433**(%%):  LoRaWAN EU433 band
622 +* (% style="color:red" %)**EU868**(%%):  LoRaWAN EU868 band
623 +* (% style="color:red" %)**KR920**(%%):  LoRaWAN KR920 band
624 +* (% style="color:red" %)**US915**(%%):  LoRaWAN US915 band
625 +* (% style="color:red" %)**IN865**(%%):  LoRaWAN IN865 band
626 +* (% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
627 +* (% style="color:red" %)**PP**(%%):  Peer to Peer LoRa Protocol
628 +
629 += 5.  Reference =
630 +
631 +* Hardware Design File for LA66 LoRaWAN Shield, LA66 USB LoRaWAN Adapter : [[Download>>https://www.dropbox.com/sh/a3wbmdcvqjxaqw5/AADZfvAiykJTK624RgMquH86a?dl=0]]
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