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Wiki source code of LA66 LoRaWAN Module

Version 87.13 by Xiaoling on 2022/07/13 10:05
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Xiaoling 87.2 1
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Xiaoling 87.13 3 **Table of Contents:**
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Edwin Chen 1.1 5 {{toc/}}
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Edwin Chen 6.1 8
Xiaoling 87.2 9 = 1.  LA66 LoRaWAN Module =
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11
12 == 1.1  What is LA66 LoRaWAN Module ==
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Edwin Chen 65.1 15 (% 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 16
Edwin Chen 65.1 17 (% 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 18
Edwin Chen 65.1 19 Each LA66 module includes a (% style="color:blue" %)**world-unique OTAA key**(%%) for LoRaWAN registration.
Edwin Chen 1.1 20
Edwin Chen 65.1 21 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 22
Edwin Chen 65.1 23 LA66 is equipped with (% style="color:blue" %)**TCXO crystal**(%%) which ensures the module can achieve stable performance in extreme temperatures.
Edwin Chen 1.1 24
Edwin Chen 67.1 25
Xiaoling 87.2 26 == 1.2  Features ==
Edwin Chen 64.1 27
Edwin Chen 68.1 28 * Support LoRaWAN v1.0.4 protocol
29 * Support peer-to-peer protocol
30 * TCXO crystal to ensure RF performance on low temperature
31 * SMD Antenna pad and i-pex antenna connector
32 * Available in different frequency LoRaWAN frequency bands.
33 * World-wide unique OTAA keys.
Edwin Chen 69.1 34 * AT Command via UART-TTL interface
35 * Firmware upgradable via UART interface
36 * Ultra-long RF range
Edwin Chen 64.1 37
Xiaoling 87.7 38
Xiaoling 87.2 39 == 1.3  Specification ==
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Edwin Chen 68.1 41 * CPU: 32-bit 48 MHz
42 * Flash: 256KB
43 * RAM: 64KB
Edwin Chen 66.1 44 * Input Power Range: 1.8v ~~ 3.7v
45 * Power Consumption: < 4uA.
46 * Frequency Range: 150 MHz ~~ 960 MHz
47 * Maximum Power +22 dBm constant RF output
48 * High sensitivity: -148 dBm
49 * Temperature:
50 ** Storage: -55 ~~ +125℃
51 ** Operating: -40 ~~ +85℃
52 * Humidity:
53 ** Storage: 5 ~~ 95% (Non-Condensing)
54 ** Operating: 10 ~~ 95% (Non-Condensing)
55 * LoRa Tx Current: <90 mA at +17 dBm, 108 mA at +22 dBm
56 * LoRa Rx current: <9 mA
57 * I/O Voltage: 3.3v
Edwin Chen 1.1 58
Xiaoling 87.7 59
Xiaoling 87.2 60 == 1.4  AT Command ==
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Edwin Chen 66.1 62 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 63
Edwin Chen 3.1 64
Xiaoling 87.2 65 == 1.5  Dimension ==
Edwin Chen 3.1 66
Edwin Chen 66.1 67 [[image:image-20220517072526-1.png]]
Edwin Chen 3.1 68
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Edwin Chen 5.1 70
Xiaoling 87.2 71 == 1.6  Pin Mapping ==
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Xiaoling 10.2 74 [[image:image-20220523101537-1.png]]
Edwin Chen 5.1 75
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Xiaoling 87.2 77
78 == 1.7  Land Pattern ==
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Edwin Chen 5.1 80 [[image:image-20220517072821-2.png]]
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Xiaoling 87.2 84 = 2.  LA66 LoRaWAN Shield =
Edwin Chen 6.1 85
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Xiaoling 87.2 87 == 2.1  Overview ==
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Edwin Chen 71.1 89 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.
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Xiaoling 87.2 92 == 2.2  Features ==
Edwin Chen 71.1 93
94 * Arduino Shield base on LA66 LoRaWAN module
95 * Support LoRaWAN v1.0.4 protocol
96 * Support peer-to-peer protocol
97 * TCXO crystal to ensure RF performance on low temperature
98 * SMA connector
99 * Available in different frequency LoRaWAN frequency bands.
100 * World-wide unique OTAA keys.
101 * AT Command via UART-TTL interface
102 * Firmware upgradable via UART interface
103 * Ultra-long RF range
104
Xiaoling 87.8 105
Xiaoling 87.2 106 == 2.3  Specification ==
107
Edwin Chen 71.1 108 * CPU: 32-bit 48 MHz
109 * Flash: 256KB
110 * RAM: 64KB
111 * Input Power Range: 1.8v ~~ 3.7v
112 * Power Consumption: < 4uA.
113 * Frequency Range: 150 MHz ~~ 960 MHz
114 * Maximum Power +22 dBm constant RF output
115 * High sensitivity: -148 dBm
116 * Temperature:
117 ** Storage: -55 ~~ +125℃
118 ** Operating: -40 ~~ +85℃
119 * Humidity:
120 ** Storage: 5 ~~ 95% (Non-Condensing)
121 ** Operating: 10 ~~ 95% (Non-Condensing)
122 * LoRa Tx Current: <90 mA at +17 dBm, 108 mA at +22 dBm
123 * LoRa Rx current: <9 mA
124 * I/O Voltage: 3.3v
125
Xiaoling 87.8 126
Xiaoling 87.2 127 == 2.4  Pin Mapping & LED ==
Edwin Chen 11.1 128
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Xiaoling 87.2 131 == 2.5  Example: Use AT Command to communicate with LA66 module via Arduino UNO. ==
Edwin Chen 11.1 132
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Xiaoling 87.2 134
135 == 2.6  Example: Join TTN network and send an uplink message, get downlink message. ==
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139 == 2.7  Example: Log Temperature Sensor(DHT11) and send data to TTN, show it in DataCake. ==
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143 == 2.8  Upgrade Firmware of LA66 LoRaWAN Shield ==
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145
146 === 2.8.1  Items needed for update ===
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Edwin Chen 74.1 148 1. LA66 LoRaWAN Shield
149 1. Arduino
150 1. USB TO TTL Adapter
Edwin Chen 13.1 151
Edwin Chen 75.1 152 [[image:image-20220602100052-2.png||height="385" width="600"]]
Herong Lu 20.1 153
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Xiaoling 87.2 155 === 2.8.2  Connection ===
Herong Lu 20.1 156
Xiaoling 87.2 157
Edwin Chen 75.1 158 [[image:image-20220602101311-3.png||height="276" width="600"]]
Herong Lu 20.1 159
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Xiaoling 87.2 161 (% style="color:blue" %)**LA66 LoRaWAN Shield**(%%)  **<->** (% style="color:blue" %)**USB TTL**
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163 (% style="background-color:yellow" %)**GND  <-> GND
Xiaoling 87.8 164 TXD  <->  TXD
165 RXD  <->  RXD**
Xiaoling 87.2 166
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Edwin Chen 77.1 168 Put a jumper cap on JP6 of LA66 LoRaWAN Shield. ( the jumper is to power on LA66 module)
Herong Lu 20.1 169
Edwin Chen 75.1 170 Connect USB TTL Adapter to PC after connecting the wires
Herong Lu 20.1 171
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Edwin Chen 75.1 173 [[image:image-20220602102240-4.png||height="304" width="600"]]
Herong Lu 20.1 174
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Xiaoling 87.2 176 === 2.8.3  Upgrade steps ===
Herong Lu 20.1 177
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Xiaoling 87.2 179 ==== 1.  Switch SW1 to put in ISP position ====
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Edwin Chen 75.1 182 [[image:image-20220602102824-5.png||height="306" width="600"]]
Herong Lu 32.1 183
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Xiaoling 87.9 185
Xiaoling 87.2 186 ==== 2.  Press the RST switch once ====
Herong Lu 32.1 187
Xiaoling 87.10 188
Edwin Chen 75.1 189 [[image:image-20220602104701-12.png||height="285" width="600"]]
Herong Lu 32.1 190
Edwin Chen 75.1 191
Xiaoling 87.9 192
Xiaoling 87.2 193 ==== 3.  Open the Upgrade tool (Tremo Programmer) in PC and Upgrade ====
Edwin Chen 75.1 194
Herong Lu 39.1 195
Xiaoling 87.2 196 (% 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/]]**
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Herong Lu 32.1 199 [[image:image-20220602103227-6.png]]
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Xiaoling 87.2 201
Herong Lu 32.1 202 [[image:image-20220602103357-7.png]]
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Xiaoling 87.2 205
Edwin Chen 76.1 206 (% class="wikigeneratedid" id="HSelecttheCOMportcorrespondingtoUSBTTL" %)
Xiaoling 87.2 207 (% style="color:blue" %)**2. Select the COM port corresponding to USB TTL**
Edwin Chen 76.1 208
Xiaoling 87.2 209
Herong Lu 32.1 210 [[image:image-20220602103844-8.png]]
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Xiaoling 87.2 213
Edwin Chen 76.1 214 (% class="wikigeneratedid" id="HSelectthebinfiletoburn" %)
Xiaoling 87.2 215 (% style="color:blue" %)**3. Select the bin file to burn**
Edwin Chen 76.1 216
Xiaoling 87.2 217
Herong Lu 32.1 218 [[image:image-20220602104144-9.png]]
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Xiaoling 87.2 220
Herong Lu 32.1 221 [[image:image-20220602104251-10.png]]
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Xiaoling 87.2 223
Herong Lu 32.1 224 [[image:image-20220602104402-11.png]]
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Xiaoling 87.2 227
Edwin Chen 76.1 228 (% class="wikigeneratedid" id="HClicktostartthedownload" %)
Xiaoling 87.2 229 (% style="color:blue" %)**4. Click to start the download**
Edwin Chen 76.1 230
Herong Lu 32.1 231 [[image:image-20220602104923-13.png]]
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Xiaoling 87.10 234
Edwin Chen 76.1 235 (% class="wikigeneratedid" id="HThefollowingfigureappearstoprovethattheburningisinprogress" %)
Xiaoling 87.2 236 (% style="color:blue" %)**5. Check update process**
Edwin Chen 76.1 237
Xiaoling 87.2 238
Herong Lu 32.1 239 [[image:image-20220602104948-14.png]]
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Xiaoling 87.2 242
Edwin Chen 76.1 243 (% class="wikigeneratedid" id="HThefollowingpictureappearstoprovethattheburningissuccessful" %)
Xiaoling 87.2 244 (% style="color:blue" %)**The following picture shows that the burning is successful**
Edwin Chen 76.1 245
Herong Lu 32.1 246 [[image:image-20220602105251-15.png]]
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Edwin Chen 72.1 248
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Xiaoling 87.2 250 = 3.  LA66 USB LoRaWAN Adapter =
Edwin Chen 6.1 251
Edwin Chen 7.1 252
Xiaoling 87.2 253 == 3.1  Overview ==
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Edwin Chen 73.1 255 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.
Herong Lu 52.1 256
Edwin Chen 73.1 257
Xiaoling 87.2 258 == 3.2  Features ==
Edwin Chen 73.1 259
260 * LoRaWAN USB adapter base on LA66 LoRaWAN module
261 * Ultra-long RF range
262 * Support LoRaWAN v1.0.4 protocol
263 * Support peer-to-peer protocol
264 * TCXO crystal to ensure RF performance on low temperature
265 * Spring RF antenna
266 * Available in different frequency LoRaWAN frequency bands.
267 * World-wide unique OTAA keys.
268 * AT Command via UART-TTL interface
269 * Firmware upgradable via UART interface
270
Xiaoling 87.10 271
Xiaoling 87.3 272 == 3.3  Specification ==
Edwin Chen 73.1 273
274 * CPU: 32-bit 48 MHz
275 * Flash: 256KB
276 * RAM: 64KB
277 * Input Power Range: 5v
278 * Frequency Range: 150 MHz ~~ 960 MHz
279 * Maximum Power +22 dBm constant RF output
280 * High sensitivity: -148 dBm
281 * Temperature:
282 ** Storage: -55 ~~ +125℃
283 ** Operating: -40 ~~ +85℃
284 * Humidity:
285 ** Storage: 5 ~~ 95% (Non-Condensing)
286 ** Operating: 10 ~~ 95% (Non-Condensing)
287 * LoRa Tx Current: <90 mA at +17 dBm, 108 mA at +22 dBm
288 * LoRa Rx current: <9 mA
289
Xiaoling 87.10 290
Xiaoling 87.3 291 == 3.4  Pin Mapping & LED ==
Edwin Chen 7.1 292
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Xiaoling 87.3 294
295 == 3.5  Example: Send & Get Messages via LoRaWAN in PC ==
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Edwin Chen 78.2 298 Assume user already input the LA66 USB LoRaWAN Adapter OTAA Keys in TTN and there is already TTN network coverage.
Herong Lu 58.1 299
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Xiaoling 87.3 301 (% style="color:blue" %)**1. Connect the LA66 USB LoRaWAN adapter to PC**
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Edwin Chen 78.2 304 [[image:image-20220602171217-1.png||height="538" width="800"]]
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Xiaoling 87.3 306
Herong Lu 58.1 307 Open the serial port tool
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309 [[image:image-20220602161617-8.png]]
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Edwin Chen 78.2 311 [[image:image-20220602161718-9.png||height="457" width="800"]]
Herong Lu 58.1 312
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Xiaoling 87.3 315 (% style="color:blue" %)**2. Press the reset switch RST on the LA66 USB LoRaWAN Adapter to reset it.**
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Edwin Chen 78.2 317 The following picture appears to prove that the LA66 USB LoRaWAN Adapter successfully Join the LoRaWAN network
Herong Lu 58.1 318
Xiaoling 87.3 319
Edwin Chen 78.2 320 [[image:image-20220602161935-10.png||height="498" width="800"]]
Herong Lu 58.1 321
Edwin Chen 78.2 322
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Xiaoling 87.3 324 (% style="color:blue" %)**3. See Uplink Command**
Edwin Chen 78.2 325
Xiaoling 87.3 326 Command format: (% style="color:#4472c4" %)** AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data>**
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Herong Lu 58.1 328 example: AT+SENDB=01,02,8,05820802581ea0a5
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Edwin Chen 78.2 330 [[image:image-20220602162157-11.png||height="497" width="800"]]
Herong Lu 58.1 331
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Xiaoling 87.3 334 (% style="color:blue" %)**4. Check to see if TTN received the message**
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Edwin Chen 78.2 336 [[image:image-20220602162331-12.png||height="420" width="800"]]
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Xiaoling 87.3 340 == 3.6  Example: Send PC's CPU/RAM usage to TTN via python ==
Edwin Chen 81.1 341
Xiaoling 87.3 342
Edwin Chen 87.1 343 **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]]
Edwin Chen 81.1 344
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Xiaoling 87.3 346 (% style="color:red" %)**Preconditions:**
Edwin Chen 81.1 347
Xiaoling 87.3 348 (% style="color:red" %)**1. LA66 USB LoRaWAN Adapter works fine**
Edwin Chen 81.1 349
Xiaoling 87.3 350 (% style="color:red" %)**2. LA66 USB LoRaWAN Adapter  is registered with TTN**
Edwin Chen 81.1 351
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Xiaoling 87.3 354 (% style="color:blue" %)**Steps for usage:**
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356 (% style="color:blue" %)**1.**(%%) Press the reset switch RESET on the LA66 USB LoRaWAN Adapter
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358 (% style="color:blue" %)**2.**(%%) Run the python script in PC and see the TTN
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Edwin Chen 81.1 360 [[image:image-20220602115852-3.png||height="450" width="1187"]]
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Xiaoling 87.4 364 == 3.7  Example: Send & Get Messages via LoRaWAN in RPi ==
Edwin Chen 11.1 365
Xiaoling 87.4 366
Edwin Chen 79.1 367 Assume user already input the LA66 USB LoRaWAN Adapter OTAA Keys in TTN and there is already TTN network coverage.
Edwin Chen 12.1 368
Edwin Chen 79.1 369
Xiaoling 87.5 370 (% style="color:blue" %)**1. Connect the LA66 USB LoRaWAN Adapter to the Raspberry Pi**
Xiaoling 87.4 371
Edwin Chen 78.2 372 [[image:image-20220602171233-2.png||height="538" width="800"]]
Herong Lu 43.1 373
Herong Lu 52.1 374
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Xiaoling 87.4 376 (% style="color:blue" %)**2. Install Minicom in RPi.**
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Edwin Chen 79.1 378 (% id="cke_bm_509388S" style="display:none" %) (%%)Enter the following command in the RPi terminal
Herong Lu 52.1 379
Xiaoling 87.4 380 (% style="background-color:yellow" %)**apt update**
Herong Lu 52.1 381
Xiaoling 87.4 382 (% style="background-color:yellow" %)**apt install minicom**
Herong Lu 52.1 383
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Edwin Chen 79.1 385 Use minicom to connect to the RPI's terminal
Herong Lu 52.1 386
Edwin Chen 79.1 387 [[image:image-20220602153146-3.png||height="439" width="500"]]
Herong Lu 52.1 388
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Xiaoling 87.4 390
Xiaoling 87.11 391 (% style="color:blue" %)**3. Press the reset switch RST on the LA66 USB LoRaWAN Adapter.**
Edwin Chen 8.1 392
Xiaoling 87.11 393 The following picture appears to prove that the LA66 USB LoRaWAN Adapter successfully entered the network.
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Edwin Chen 79.1 396 [[image:image-20220602154928-5.png||height="436" width="500"]]
Herong Lu 46.1 397
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Xiaoling 87.4 400 (% style="color:blue" %)**4. Send Uplink message**
Herong Lu 46.1 401
Xiaoling 87.5 402 Format: (% style="color:#4472c4" %)**AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data>**
Xiaoling 87.4 403
Edwin Chen 79.1 404 example: AT+SENDB=01,02,8,05820802581ea0a5
Herong Lu 46.1 405
Xiaoling 87.4 406
Edwin Chen 79.1 407 [[image:image-20220602160339-6.png||height="517" width="600"]]
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Xiaoling 87.4 409
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Edwin Chen 79.1 411 Check to see if TTN received the message
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413 [[image:image-20220602160627-7.png||height="369" width="800"]]
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Xiaoling 87.4 417 == 3.8  Example: LA66 USB Module got a message from LA66 LoRa Shield and send the sensor data to NodeRed. ==
Edwin Chen 11.1 418
Edwin Chen 13.1 419
Herong Lu 63.1 420
Xiaoling 87.4 421 == 3.9  Upgrade Firmware of LA66 USB LoRaWAN Adapter ==
Edwin Chen 73.1 422
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Xiaoling 87.4 426 = 4.  Order Info =
Edwin Chen 73.1 427
Xiaoling 87.4 428
Xiaoling 87.5 429 **Part Number:**  (% style="color:blue" %)**LA66-XXX**(%%), (% style="color:blue" %)**LA66-LoRaWAN-Shield-XXX** (%%) **or**  (% style="color:blue" %)**LA66-USB-LoRaWAN-Adapter-XXX**
Xiaoling 87.4 430
431
Xiaoling 87.5 432 (% style="color:blue" %)**XXX**(%%): The default frequency band
Edwin Chen 86.1 433
Xiaoling 87.5 434 * (% style="color:red" %)**AS923**(%%):  LoRaWAN AS923 band
435 * (% style="color:red" %)**AU915**(%%):  LoRaWAN AU915 band
436 * (% style="color:red" %)**EU433**(%%):  LoRaWAN EU433 band
437 * (% style="color:red" %)**EU868**(%%):  LoRaWAN EU868 band
438 * (% style="color:red" %)**KR920**(%%):  LoRaWAN KR920 band
439 * (% style="color:red" %)**US915**(%%):  LoRaWAN US915 band
440 * (% style="color:red" %)**IN865**(%%):  LoRaWAN IN865 band
441 * (% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
442 * (% style="color:red" %)**PP**(%%):  Peer to Peer LoRa Protocol
Edwin Chen 73.1 443
Edwin Chen 78.1 444
Xiaoling 87.4 445
446 = 5.  Reference =
447
Edwin Chen 78.1 448 * 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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Edwin Chen 79.1 450