Wiki source code of LA66 LoRaWAN Module

Version 72.1 by Edwin Chen on 2022/07/03 00:02
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Edwin Chen 1.1 1 {{box cssClass="floatinginfobox" title="**Contents**"}}
2 {{toc/}}
3 {{/box}}
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Edwin Chen 6.1 5 = LA66 LoRaWAN Module =
Edwin Chen 1.1 6
Edwin Chen 6.1 7 == What is LA66 LoRaWAN Module ==
8
Edwin Chen 65.1 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.
Edwin Chen 1.1 10
Edwin Chen 65.1 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.
Edwin Chen 1.1 12
Edwin Chen 65.1 13 Each LA66 module includes a (% style="color:blue" %)**world-unique OTAA key**(%%) for LoRaWAN registration.
Edwin Chen 1.1 14
Edwin Chen 65.1 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.
Edwin Chen 1.1 16
Edwin Chen 65.1 17 LA66 is equipped with (% style="color:blue" %)**TCXO crystal**(%%) which ensures the module can achieve stable performance in extreme temperatures.
Edwin Chen 1.1 18
Edwin Chen 67.1 19
Edwin Chen 65.1 20 == Features ==
Edwin Chen 64.1 21
Edwin Chen 68.1 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.
Edwin Chen 69.1 28 * AT Command via UART-TTL interface
29 * Firmware upgradable via UART interface
30 * Ultra-long RF range
Edwin Chen 64.1 31
Edwin Chen 6.1 32 == Specification ==
Edwin Chen 1.1 33
Edwin Chen 68.1 34 * CPU: 32-bit 48 MHz
35 * Flash: 256KB
36 * RAM: 64KB
Edwin Chen 66.1 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
Edwin Chen 1.1 51
Edwin Chen 66.1 52 == AT Command ==
Edwin Chen 1.1 53
Edwin Chen 66.1 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.
Edwin Chen 1.1 55
Edwin Chen 3.1 56
Edwin Chen 66.1 57 == Dimension ==
Edwin Chen 3.1 58
Edwin Chen 66.1 59 [[image:image-20220517072526-1.png]]
Edwin Chen 3.1 60
61
Edwin Chen 6.1 62 == Pin Mapping ==
Edwin Chen 5.1 63
Xiaoling 10.2 64 [[image:image-20220523101537-1.png]]
Edwin Chen 5.1 65
Edwin Chen 6.1 66 == Land Pattern ==
Edwin Chen 5.1 67
68 [[image:image-20220517072821-2.png]]
69
70
Edwin Chen 72.1 71 == Order Info ==
Edwin Chen 5.1 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
Edwin Chen 68.1 85 * **PP**: Peer to Peer LoRa Protocol
Edwin Chen 6.1 86
Edwin Chen 71.1 87
Edwin Chen 6.1 88 = LA66 LoRaWAN Shield =
89
Edwin Chen 71.1 90 == Overview ==
Edwin Chen 6.1 91
Edwin Chen 71.1 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
Edwin Chen 11.1 128 == Pin Mapping & LED ==
Edwin Chen 6.1 129
Edwin Chen 11.1 130 == 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
Edwin Chen 13.1 136 == Upgrade Firmware of LA66 LoRaWAN Shield ==
Edwin Chen 11.1 137
Herong Lu 20.1 138 === what needs to be used ===
Edwin Chen 11.1 139
Herong Lu 20.1 140 1.LA66 LoRaWAN Shield that needs to be upgraded
Edwin Chen 13.1 141
Herong Lu 20.1 142 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
Herong Lu 32.1 168 ==== Dial the SW1 of the LA66 LoRaWAN Shield to the ISP's location as shown in the figure below ====
Herong Lu 20.1 169
Herong Lu 32.1 170 [[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
Herong Lu 39.1 178 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
Herong Lu 32.1 180 [[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
Edwin Chen 72.1 208 (% 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
Edwin Chen 6.1 238 = LA66 USB LoRaWAN Adapter =
239
Edwin Chen 7.1 240 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
Herong Lu 52.1 242 Before use, please make sure that the computer has installed the CP2102 driver
243
Edwin Chen 14.1 244 == Pin Mapping & LED ==
Edwin Chen 7.1 245
Edwin Chen 11.1 246 == Example Send & Get Messages via LoRaWAN in PC ==
Edwin Chen 7.1 247
Herong Lu 58.1 248 Connect the LA66 LoRa Shield to the PC
249
Herong Lu 61.1 250 [[image:image-20220602171217-1.png||height="615" width="915"]]
Herong Lu 58.1 251
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
Edwin Chen 11.1 274 == Example Send & Get Messages via LoRaWAN in RPi ==
275
Herong Lu 52.1 276 Connect the LA66 LoRa Shield to the RPI
Edwin Chen 12.1 277
Herong Lu 61.1 278 [[image:image-20220602171233-2.png||height="592" width="881"]]
Herong Lu 43.1 279
Herong Lu 52.1 280 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
Edwin Chen 8.1 299 === Install Minicom ===
300
Herong Lu 46.1 301 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
Herong Lu 38.1 311 === Send PC's CPU/RAM usage to TTN via script. ===
Edwin Chen 11.1 312
Herong Lu 38.1 313 ==== Take python as an example： ====
Edwin Chen 11.1 314
Herong Lu 38.1 315 ===== Preconditions: =====
316
Herong Lu 62.1 317 1.LA66 USB LoRaWAN Adapter works fine
Herong Lu 38.1 318
Herong Lu 62.1 319 2.LA66 USB LoRaWAN Adapter  is registered with TTN
Herong Lu 38.1 320
321 ===== Steps for usage =====
322
Herong Lu 62.1 323 1.Press the reset switch RESET on the LA66 USB LoRaWAN Adapter
Herong Lu 38.1 324
325 2.Run the script and see the TTN
326
327 [[image:image-20220602115852-3.png]]
328
329
330
Edwin Chen 11.1 331 == Example: LA66 USB Module got a message from LA66 LoRa Shield and send the sensor data to NodeRed. ==
332
Edwin Chen 13.1 333
334 == Upgrade Firmware of LA66 USB LoRaWAN Adapter ==
Herong Lu 63.1 335
336

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