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Wiki source code of LA66 LoRaWAN Module

Version 87.14 by Xiaoling on 2022/07/13 10:06
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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 =
10
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 87.14 39
Xiaoling 87.2 40 == 1.3  Specification ==
41
Edwin Chen 68.1 42 * CPU: 32-bit 48 MHz
43 * Flash: 256KB
44 * RAM: 64KB
Edwin Chen 66.1 45 * Input Power Range: 1.8v ~~ 3.7v
46 * Power Consumption: < 4uA.
47 * Frequency Range: 150 MHz ~~ 960 MHz
48 * Maximum Power +22 dBm constant RF output
49 * High sensitivity: -148 dBm
50 * Temperature:
51 ** Storage: -55 ~~ +125℃
52 ** Operating: -40 ~~ +85℃
53 * Humidity:
54 ** Storage: 5 ~~ 95% (Non-Condensing)
55 ** Operating: 10 ~~ 95% (Non-Condensing)
56 * LoRa Tx Current: <90 mA at +17 dBm, 108 mA at +22 dBm
57 * LoRa Rx current: <9 mA
58 * I/O Voltage: 3.3v
Edwin Chen 1.1 59
Xiaoling 87.7 60
Xiaoling 87.14 61
Xiaoling 87.2 62 == 1.4  AT Command ==
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Edwin Chen 66.1 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.
Edwin Chen 1.1 65
Edwin Chen 3.1 66
Xiaoling 87.2 67 == 1.5  Dimension ==
Edwin Chen 3.1 68
Edwin Chen 66.1 69 [[image:image-20220517072526-1.png]]
Edwin Chen 3.1 70
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Edwin Chen 5.1 72
Xiaoling 87.2 73 == 1.6  Pin Mapping ==
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Xiaoling 10.2 76 [[image:image-20220523101537-1.png]]
Edwin Chen 5.1 77
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Xiaoling 87.2 79
80 == 1.7  Land Pattern ==
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Edwin Chen 5.1 82 [[image:image-20220517072821-2.png]]
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Xiaoling 87.2 86 = 2.  LA66 LoRaWAN Shield =
Edwin Chen 6.1 87
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Xiaoling 87.2 89 == 2.1  Overview ==
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Edwin Chen 71.1 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.
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Xiaoling 87.2 94 == 2.2  Features ==
Edwin Chen 71.1 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
Xiaoling 87.8 107
Xiaoling 87.14 108
Xiaoling 87.2 109 == 2.3  Specification ==
110
Edwin Chen 71.1 111 * CPU: 32-bit 48 MHz
112 * Flash: 256KB
113 * RAM: 64KB
114 * Input Power Range: 1.8v ~~ 3.7v
115 * Power Consumption: < 4uA.
116 * Frequency Range: 150 MHz ~~ 960 MHz
117 * Maximum Power +22 dBm constant RF output
118 * High sensitivity: -148 dBm
119 * Temperature:
120 ** Storage: -55 ~~ +125℃
121 ** Operating: -40 ~~ +85℃
122 * Humidity:
123 ** Storage: 5 ~~ 95% (Non-Condensing)
124 ** Operating: 10 ~~ 95% (Non-Condensing)
125 * LoRa Tx Current: <90 mA at +17 dBm, 108 mA at +22 dBm
126 * LoRa Rx current: <9 mA
127 * I/O Voltage: 3.3v
128
Xiaoling 87.8 129
Xiaoling 87.14 130
Xiaoling 87.2 131 == 2.4  Pin Mapping & LED ==
Edwin Chen 11.1 132
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Xiaoling 87.2 135 == 2.5  Example: Use AT Command to communicate with LA66 module via Arduino UNO. ==
Edwin Chen 11.1 136
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Xiaoling 87.2 138
139 == 2.6  Example: Join TTN network and send an uplink message, get downlink message. ==
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143 == 2.7  Example: Log Temperature Sensor(DHT11) and send data to TTN, show it in DataCake. ==
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146
147 == 2.8  Upgrade Firmware of LA66 LoRaWAN Shield ==
148
149
150 === 2.8.1  Items needed for update ===
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Edwin Chen 74.1 152 1. LA66 LoRaWAN Shield
153 1. Arduino
154 1. USB TO TTL Adapter
Edwin Chen 13.1 155
Xiaoling 87.14 156
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Edwin Chen 75.1 159 [[image:image-20220602100052-2.png||height="385" width="600"]]
Herong Lu 20.1 160
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Xiaoling 87.2 162 === 2.8.2  Connection ===
Herong Lu 20.1 163
Xiaoling 87.2 164
Edwin Chen 75.1 165 [[image:image-20220602101311-3.png||height="276" width="600"]]
Herong Lu 20.1 166
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Xiaoling 87.2 168 (% style="color:blue" %)**LA66 LoRaWAN Shield**(%%)  **<->** (% style="color:blue" %)**USB TTL**
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170 (% style="background-color:yellow" %)**GND  <-> GND
Xiaoling 87.8 171 TXD  <->  TXD
172 RXD  <->  RXD**
Xiaoling 87.2 173
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Edwin Chen 77.1 175 Put a jumper cap on JP6 of LA66 LoRaWAN Shield. ( the jumper is to power on LA66 module)
Herong Lu 20.1 176
Edwin Chen 75.1 177 Connect USB TTL Adapter to PC after connecting the wires
Herong Lu 20.1 178
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Edwin Chen 75.1 180 [[image:image-20220602102240-4.png||height="304" width="600"]]
Herong Lu 20.1 181
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Xiaoling 87.2 183 === 2.8.3  Upgrade steps ===
Herong Lu 20.1 184
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Xiaoling 87.2 186 ==== 1.  Switch SW1 to put in ISP position ====
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Edwin Chen 75.1 189 [[image:image-20220602102824-5.png||height="306" width="600"]]
Herong Lu 32.1 190
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Xiaoling 87.9 192
Xiaoling 87.2 193 ==== 2.  Press the RST switch once ====
Herong Lu 32.1 194
Xiaoling 87.10 195
Edwin Chen 75.1 196 [[image:image-20220602104701-12.png||height="285" width="600"]]
Herong Lu 32.1 197
Edwin Chen 75.1 198
Xiaoling 87.9 199
Xiaoling 87.2 200 ==== 3.  Open the Upgrade tool (Tremo Programmer) in PC and Upgrade ====
Edwin Chen 75.1 201
Herong Lu 39.1 202
Xiaoling 87.2 203 (% 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 32.1 206 [[image:image-20220602103227-6.png]]
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Xiaoling 87.2 208
Herong Lu 32.1 209 [[image:image-20220602103357-7.png]]
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Xiaoling 87.2 212
Edwin Chen 76.1 213 (% class="wikigeneratedid" id="HSelecttheCOMportcorrespondingtoUSBTTL" %)
Xiaoling 87.2 214 (% style="color:blue" %)**2. Select the COM port corresponding to USB TTL**
Edwin Chen 76.1 215
Xiaoling 87.2 216
Herong Lu 32.1 217 [[image:image-20220602103844-8.png]]
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Xiaoling 87.2 220
Edwin Chen 76.1 221 (% class="wikigeneratedid" id="HSelectthebinfiletoburn" %)
Xiaoling 87.2 222 (% style="color:blue" %)**3. Select the bin file to burn**
Edwin Chen 76.1 223
Xiaoling 87.2 224
Herong Lu 32.1 225 [[image:image-20220602104144-9.png]]
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Xiaoling 87.2 227
Herong Lu 32.1 228 [[image:image-20220602104251-10.png]]
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Xiaoling 87.2 230
Herong Lu 32.1 231 [[image:image-20220602104402-11.png]]
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Xiaoling 87.2 234
Edwin Chen 76.1 235 (% class="wikigeneratedid" id="HClicktostartthedownload" %)
Xiaoling 87.2 236 (% style="color:blue" %)**4. Click to start the download**
Edwin Chen 76.1 237
Herong Lu 32.1 238 [[image:image-20220602104923-13.png]]
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Xiaoling 87.10 241
Edwin Chen 76.1 242 (% class="wikigeneratedid" id="HThefollowingfigureappearstoprovethattheburningisinprogress" %)
Xiaoling 87.2 243 (% style="color:blue" %)**5. Check update process**
Edwin Chen 76.1 244
Xiaoling 87.2 245
Herong Lu 32.1 246 [[image:image-20220602104948-14.png]]
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Xiaoling 87.2 249
Edwin Chen 76.1 250 (% class="wikigeneratedid" id="HThefollowingpictureappearstoprovethattheburningissuccessful" %)
Xiaoling 87.2 251 (% style="color:blue" %)**The following picture shows that the burning is successful**
Edwin Chen 76.1 252
Herong Lu 32.1 253 [[image:image-20220602105251-15.png]]
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Edwin Chen 72.1 255
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Xiaoling 87.2 257 = 3.  LA66 USB LoRaWAN Adapter =
Edwin Chen 6.1 258
Edwin Chen 7.1 259
Xiaoling 87.2 260 == 3.1  Overview ==
261
Edwin Chen 73.1 262 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 52.1 263
Edwin Chen 73.1 264
Xiaoling 87.2 265 == 3.2  Features ==
Edwin Chen 73.1 266
267 * LoRaWAN USB adapter base on LA66 LoRaWAN module
268 * Ultra-long RF range
269 * Support LoRaWAN v1.0.4 protocol
270 * Support peer-to-peer protocol
271 * TCXO crystal to ensure RF performance on low temperature
272 * Spring RF antenna
273 * Available in different frequency LoRaWAN frequency bands.
274 * World-wide unique OTAA keys.
275 * AT Command via UART-TTL interface
276 * Firmware upgradable via UART interface
277
Xiaoling 87.10 278
Xiaoling 87.14 279
Xiaoling 87.3 280 == 3.3  Specification ==
Edwin Chen 73.1 281
282 * CPU: 32-bit 48 MHz
283 * Flash: 256KB
284 * RAM: 64KB
285 * Input Power Range: 5v
286 * Frequency Range: 150 MHz ~~ 960 MHz
287 * Maximum Power +22 dBm constant RF output
288 * High sensitivity: -148 dBm
289 * Temperature:
290 ** Storage: -55 ~~ +125℃
291 ** Operating: -40 ~~ +85℃
292 * Humidity:
293 ** Storage: 5 ~~ 95% (Non-Condensing)
294 ** Operating: 10 ~~ 95% (Non-Condensing)
295 * LoRa Tx Current: <90 mA at +17 dBm, 108 mA at +22 dBm
296 * LoRa Rx current: <9 mA
297
Xiaoling 87.10 298
Xiaoling 87.14 299
Xiaoling 87.3 300 == 3.4  Pin Mapping & LED ==
Edwin Chen 7.1 301
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Xiaoling 87.3 303
304 == 3.5  Example: Send & Get Messages via LoRaWAN in PC ==
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Edwin Chen 78.2 307 Assume user already input the LA66 USB LoRaWAN Adapter OTAA Keys in TTN and there is already TTN network coverage.
Herong Lu 58.1 308
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Xiaoling 87.3 310 (% style="color:blue" %)**1. Connect the LA66 USB LoRaWAN adapter to PC**
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Edwin Chen 78.2 313 [[image:image-20220602171217-1.png||height="538" width="800"]]
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Xiaoling 87.3 315
Herong Lu 58.1 316 Open the serial port tool
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318 [[image:image-20220602161617-8.png]]
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Edwin Chen 78.2 320 [[image:image-20220602161718-9.png||height="457" width="800"]]
Herong Lu 58.1 321
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Xiaoling 87.3 324 (% style="color:blue" %)**2. Press the reset switch RST on the LA66 USB LoRaWAN Adapter to reset it.**
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Edwin Chen 78.2 326 The following picture appears to prove that the LA66 USB LoRaWAN Adapter successfully Join the LoRaWAN network
Herong Lu 58.1 327
Xiaoling 87.3 328
Edwin Chen 78.2 329 [[image:image-20220602161935-10.png||height="498" width="800"]]
Herong Lu 58.1 330
Edwin Chen 78.2 331
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Xiaoling 87.3 333 (% style="color:blue" %)**3. See Uplink Command**
Edwin Chen 78.2 334
Xiaoling 87.3 335 Command format: (% style="color:#4472c4" %)** AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data>**
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Herong Lu 58.1 337 example: AT+SENDB=01,02,8,05820802581ea0a5
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Edwin Chen 78.2 339 [[image:image-20220602162157-11.png||height="497" width="800"]]
Herong Lu 58.1 340
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Xiaoling 87.3 343 (% style="color:blue" %)**4. Check to see if TTN received the message**
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Edwin Chen 78.2 345 [[image:image-20220602162331-12.png||height="420" width="800"]]
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Xiaoling 87.3 349 == 3.6  Example: Send PC's CPU/RAM usage to TTN via python ==
Edwin Chen 81.1 350
Xiaoling 87.3 351
Edwin Chen 87.1 352 **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 81.1 353
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Xiaoling 87.3 355 (% style="color:red" %)**Preconditions:**
Edwin Chen 81.1 356
Xiaoling 87.3 357 (% style="color:red" %)**1. LA66 USB LoRaWAN Adapter works fine**
Edwin Chen 81.1 358
Xiaoling 87.3 359 (% style="color:red" %)**2. LA66 USB LoRaWAN Adapter  is registered with TTN**
Edwin Chen 81.1 360
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Xiaoling 87.3 363 (% style="color:blue" %)**Steps for usage:**
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365 (% style="color:blue" %)**1.**(%%) Press the reset switch RESET on the LA66 USB LoRaWAN Adapter
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367 (% style="color:blue" %)**2.**(%%) Run the python script in PC and see the TTN
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Edwin Chen 81.1 369 [[image:image-20220602115852-3.png||height="450" width="1187"]]
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Xiaoling 87.4 373 == 3.7  Example: Send & Get Messages via LoRaWAN in RPi ==
Edwin Chen 11.1 374
Xiaoling 87.4 375
Edwin Chen 79.1 376 Assume user already input the LA66 USB LoRaWAN Adapter OTAA Keys in TTN and there is already TTN network coverage.
Edwin Chen 12.1 377
Edwin Chen 79.1 378
Xiaoling 87.5 379 (% style="color:blue" %)**1. Connect the LA66 USB LoRaWAN Adapter to the Raspberry Pi**
Xiaoling 87.4 380
Edwin Chen 78.2 381 [[image:image-20220602171233-2.png||height="538" width="800"]]
Herong Lu 43.1 382
Herong Lu 52.1 383
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Xiaoling 87.4 385 (% style="color:blue" %)**2. Install Minicom in RPi.**
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Edwin Chen 79.1 387 (% id="cke_bm_509388S" style="display:none" %) (%%)Enter the following command in the RPi terminal
Herong Lu 52.1 388
Xiaoling 87.4 389 (% style="background-color:yellow" %)**apt update**
Herong Lu 52.1 390
Xiaoling 87.4 391 (% style="background-color:yellow" %)**apt install minicom**
Herong Lu 52.1 392
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Edwin Chen 79.1 394 Use minicom to connect to the RPI's terminal
Herong Lu 52.1 395
Edwin Chen 79.1 396 [[image:image-20220602153146-3.png||height="439" width="500"]]
Herong Lu 52.1 397
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Xiaoling 87.4 399
Xiaoling 87.11 400 (% style="color:blue" %)**3. Press the reset switch RST on the LA66 USB LoRaWAN Adapter.**
Edwin Chen 8.1 401
Xiaoling 87.11 402 The following picture appears to prove that the LA66 USB LoRaWAN Adapter successfully entered the network.
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Edwin Chen 79.1 405 [[image:image-20220602154928-5.png||height="436" width="500"]]
Herong Lu 46.1 406
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Xiaoling 87.4 409 (% style="color:blue" %)**4. Send Uplink message**
Herong Lu 46.1 410
Xiaoling 87.5 411 Format: (% style="color:#4472c4" %)**AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data>**
Xiaoling 87.4 412
Edwin Chen 79.1 413 example: AT+SENDB=01,02,8,05820802581ea0a5
Herong Lu 46.1 414
Xiaoling 87.4 415
Edwin Chen 79.1 416 [[image:image-20220602160339-6.png||height="517" width="600"]]
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Xiaoling 87.4 418
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Edwin Chen 79.1 420 Check to see if TTN received the message
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422 [[image:image-20220602160627-7.png||height="369" width="800"]]
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Xiaoling 87.4 426 == 3.8  Example: LA66 USB Module got a message from LA66 LoRa Shield and send the sensor data to NodeRed. ==
Edwin Chen 11.1 427
Edwin Chen 13.1 428
Herong Lu 63.1 429
Xiaoling 87.4 430 == 3.9  Upgrade Firmware of LA66 USB LoRaWAN Adapter ==
Edwin Chen 73.1 431
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Xiaoling 87.4 435 = 4.  Order Info =
Edwin Chen 73.1 436
Xiaoling 87.4 437
Xiaoling 87.5 438 **Part Number:**  (% style="color:blue" %)**LA66-XXX**(%%), (% style="color:blue" %)**LA66-LoRaWAN-Shield-XXX** (%%) **or**  (% style="color:blue" %)**LA66-USB-LoRaWAN-Adapter-XXX**
Xiaoling 87.4 439
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Xiaoling 87.5 441 (% style="color:blue" %)**XXX**(%%): The default frequency band
Edwin Chen 86.1 442
Xiaoling 87.5 443 * (% style="color:red" %)**AS923**(%%):  LoRaWAN AS923 band
444 * (% style="color:red" %)**AU915**(%%):  LoRaWAN AU915 band
445 * (% style="color:red" %)**EU433**(%%):  LoRaWAN EU433 band
446 * (% style="color:red" %)**EU868**(%%):  LoRaWAN EU868 band
447 * (% style="color:red" %)**KR920**(%%):  LoRaWAN KR920 band
448 * (% style="color:red" %)**US915**(%%):  LoRaWAN US915 band
449 * (% style="color:red" %)**IN865**(%%):  LoRaWAN IN865 band
450 * (% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
451 * (% style="color:red" %)**PP**(%%):  Peer to Peer LoRa Protocol
Edwin Chen 73.1 452
Edwin Chen 78.1 453
Xiaoling 87.4 454
455 = 5.  Reference =
456
Edwin Chen 78.1 457 * 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 79.1 459