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Wiki source code of LA66 LoRaWAN Module

Version 87.4 by Xiaoling on 2022/07/13 09:55
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Xiaoling 87.2 1
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Edwin Chen 1.1 3 {{box cssClass="floatinginfobox" title="**Contents**"}}
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Xiaoling 87.2 7 {{toc/}}
Edwin Chen 1.1 8
Edwin Chen 6.1 9
Xiaoling 87.2 10
11 = 1.  LA66 LoRaWAN Module =
12
13
14 == 1.1  What is LA66 LoRaWAN Module ==
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Edwin Chen 65.1 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.
Edwin Chen 1.1 18
Edwin Chen 65.1 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.
Edwin Chen 1.1 20
Edwin Chen 65.1 21 Each LA66 module includes a (% style="color:blue" %)**world-unique OTAA key**(%%) for LoRaWAN registration.
Edwin Chen 1.1 22
Edwin Chen 65.1 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.
Edwin Chen 1.1 24
Edwin Chen 65.1 25 LA66 is equipped with (% style="color:blue" %)**TCXO crystal**(%%) which ensures the module can achieve stable performance in extreme temperatures.
Edwin Chen 1.1 26
Edwin Chen 67.1 27
Xiaoling 87.2 28 == 1.2  Features ==
Edwin Chen 64.1 29
Edwin Chen 68.1 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.
Edwin Chen 69.1 36 * AT Command via UART-TTL interface
37 * Firmware upgradable via UART interface
38 * Ultra-long RF range
Edwin Chen 64.1 39
Xiaoling 87.2 40 == 1.3  Specification ==
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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 87.2 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 ==
79
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 87.2 105 == 2.3  Specification ==
106
Edwin Chen 71.1 107 * CPU: 32-bit 48 MHz
108 * Flash: 256KB
109 * RAM: 64KB
110 * Input Power Range: 1.8v ~~ 3.7v
111 * Power Consumption: < 4uA.
112 * Frequency Range: 150 MHz ~~ 960 MHz
113 * Maximum Power +22 dBm constant RF output
114 * High sensitivity: -148 dBm
115 * Temperature:
116 ** Storage: -55 ~~ +125℃
117 ** Operating: -40 ~~ +85℃
118 * Humidity:
119 ** Storage: 5 ~~ 95% (Non-Condensing)
120 ** Operating: 10 ~~ 95% (Non-Condensing)
121 * LoRa Tx Current: <90 mA at +17 dBm, 108 mA at +22 dBm
122 * LoRa Rx current: <9 mA
123 * I/O Voltage: 3.3v
124
Xiaoling 87.2 125 == 2.4  Pin Mapping & LED ==
Edwin Chen 11.1 126
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Xiaoling 87.2 129 == 2.5  Example: Use AT Command to communicate with LA66 module via Arduino UNO. ==
Edwin Chen 11.1 130
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Xiaoling 87.2 132
133 == 2.6  Example: Join TTN network and send an uplink message, get downlink message. ==
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137 == 2.7  Example: Log Temperature Sensor(DHT11) and send data to TTN, show it in DataCake. ==
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141 == 2.8  Upgrade Firmware of LA66 LoRaWAN Shield ==
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143
144 === 2.8.1  Items needed for update ===
145
Edwin Chen 74.1 146 1. LA66 LoRaWAN Shield
147 1. Arduino
148 1. USB TO TTL Adapter
Edwin Chen 13.1 149
Edwin Chen 75.1 150 [[image:image-20220602100052-2.png||height="385" width="600"]]
Herong Lu 20.1 151
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Xiaoling 87.2 153 === 2.8.2  Connection ===
Herong Lu 20.1 154
Xiaoling 87.2 155
Edwin Chen 75.1 156 [[image:image-20220602101311-3.png||height="276" width="600"]]
Herong Lu 20.1 157
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Xiaoling 87.2 159 (% style="color:blue" %)**LA66 LoRaWAN Shield**(%%)  **<->** (% style="color:blue" %)**USB TTL**
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162 (% style="background-color:yellow" %)**GND  <-> GND
163 TXD  <->  TXD
164 RXD  <->  RXD**
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Edwin Chen 77.1 167 Put a jumper cap on JP6 of LA66 LoRaWAN Shield. ( the jumper is to power on LA66 module)
Herong Lu 20.1 168
Edwin Chen 75.1 169 Connect USB TTL Adapter to PC after connecting the wires
Herong Lu 20.1 170
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Edwin Chen 75.1 172 [[image:image-20220602102240-4.png||height="304" width="600"]]
Herong Lu 20.1 173
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Xiaoling 87.2 175 === 2.8.3  Upgrade steps ===
Herong Lu 20.1 176
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Xiaoling 87.2 178 ==== 1.  Switch SW1 to put in ISP position ====
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Edwin Chen 75.1 181 [[image:image-20220602102824-5.png||height="306" width="600"]]
Herong Lu 32.1 182
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Xiaoling 87.2 184 ==== 2.  Press the RST switch once ====
Herong Lu 32.1 185
Edwin Chen 75.1 186 [[image:image-20220602104701-12.png||height="285" width="600"]]
Herong Lu 32.1 187
Edwin Chen 75.1 188
Xiaoling 87.2 189 ==== 3.  Open the Upgrade tool (Tremo Programmer) in PC and Upgrade ====
Edwin Chen 75.1 190
Herong Lu 39.1 191
Xiaoling 87.2 192 (% 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 32.1 195 [[image:image-20220602103227-6.png]]
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Xiaoling 87.2 197
Herong Lu 32.1 198 [[image:image-20220602103357-7.png]]
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Xiaoling 87.2 201
Edwin Chen 76.1 202 (% class="wikigeneratedid" id="HSelecttheCOMportcorrespondingtoUSBTTL" %)
Xiaoling 87.2 203 (% style="color:blue" %)**2. Select the COM port corresponding to USB TTL**
Edwin Chen 76.1 204
Xiaoling 87.2 205
Herong Lu 32.1 206 [[image:image-20220602103844-8.png]]
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Xiaoling 87.2 209
Edwin Chen 76.1 210 (% class="wikigeneratedid" id="HSelectthebinfiletoburn" %)
Xiaoling 87.2 211 (% style="color:blue" %)**3. Select the bin file to burn**
Edwin Chen 76.1 212
Xiaoling 87.2 213
Herong Lu 32.1 214 [[image:image-20220602104144-9.png]]
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Xiaoling 87.2 216
Herong Lu 32.1 217 [[image:image-20220602104251-10.png]]
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Xiaoling 87.2 219
Herong Lu 32.1 220 [[image:image-20220602104402-11.png]]
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Xiaoling 87.2 223
Edwin Chen 76.1 224 (% class="wikigeneratedid" id="HClicktostartthedownload" %)
Xiaoling 87.2 225 (% style="color:blue" %)**4. Click to start the download**
Edwin Chen 76.1 226
Herong Lu 32.1 227 [[image:image-20220602104923-13.png]]
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Edwin Chen 76.1 230 (% class="wikigeneratedid" id="HThefollowingfigureappearstoprovethattheburningisinprogress" %)
Xiaoling 87.2 231 (% style="color:blue" %)**5. Check update process**
Edwin Chen 76.1 232
Xiaoling 87.2 233
Herong Lu 32.1 234 [[image:image-20220602104948-14.png]]
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Xiaoling 87.2 237
Edwin Chen 76.1 238 (% class="wikigeneratedid" id="HThefollowingpictureappearstoprovethattheburningissuccessful" %)
Xiaoling 87.2 239 (% style="color:blue" %)**The following picture shows that the burning is successful**
Edwin Chen 76.1 240
Herong Lu 32.1 241 [[image:image-20220602105251-15.png]]
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Edwin Chen 72.1 243
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Xiaoling 87.2 245 = 3.  LA66 USB LoRaWAN Adapter =
Edwin Chen 6.1 246
Edwin Chen 7.1 247
Xiaoling 87.2 248 == 3.1  Overview ==
249
Edwin Chen 73.1 250 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 52.1 251
Edwin Chen 73.1 252
Xiaoling 87.2 253 == 3.2  Features ==
Edwin Chen 73.1 254
255 * LoRaWAN USB adapter base on LA66 LoRaWAN module
256 * Ultra-long RF range
257 * Support LoRaWAN v1.0.4 protocol
258 * Support peer-to-peer protocol
259 * TCXO crystal to ensure RF performance on low temperature
260 * Spring RF antenna
261 * Available in different frequency LoRaWAN frequency bands.
262 * World-wide unique OTAA keys.
263 * AT Command via UART-TTL interface
264 * Firmware upgradable via UART interface
265
Xiaoling 87.3 266 == 3.3  Specification ==
Edwin Chen 73.1 267
268 * CPU: 32-bit 48 MHz
269 * Flash: 256KB
270 * RAM: 64KB
271 * Input Power Range: 5v
272 * Frequency Range: 150 MHz ~~ 960 MHz
273 * Maximum Power +22 dBm constant RF output
274 * High sensitivity: -148 dBm
275 * Temperature:
276 ** Storage: -55 ~~ +125℃
277 ** Operating: -40 ~~ +85℃
278 * Humidity:
279 ** Storage: 5 ~~ 95% (Non-Condensing)
280 ** Operating: 10 ~~ 95% (Non-Condensing)
281 * LoRa Tx Current: <90 mA at +17 dBm, 108 mA at +22 dBm
282 * LoRa Rx current: <9 mA
283
Xiaoling 87.3 284 == 3.4  Pin Mapping & LED ==
Edwin Chen 7.1 285
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Xiaoling 87.3 287
288 == 3.5  Example: Send & Get Messages via LoRaWAN in PC ==
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Edwin Chen 78.2 291 Assume user already input the LA66 USB LoRaWAN Adapter OTAA Keys in TTN and there is already TTN network coverage.
Herong Lu 58.1 292
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Xiaoling 87.3 294 (% style="color:blue" %)**1. Connect the LA66 USB LoRaWAN adapter to PC**
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Edwin Chen 78.2 297 [[image:image-20220602171217-1.png||height="538" width="800"]]
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Xiaoling 87.3 299
Herong Lu 58.1 300 Open the serial port tool
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302 [[image:image-20220602161617-8.png]]
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Edwin Chen 78.2 304 [[image:image-20220602161718-9.png||height="457" width="800"]]
Herong Lu 58.1 305
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Xiaoling 87.3 308 (% style="color:blue" %)**2. Press the reset switch RST on the LA66 USB LoRaWAN Adapter to reset it.**
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Edwin Chen 78.2 310 The following picture appears to prove that the LA66 USB LoRaWAN Adapter successfully Join the LoRaWAN network
Herong Lu 58.1 311
Xiaoling 87.3 312
Edwin Chen 78.2 313 [[image:image-20220602161935-10.png||height="498" width="800"]]
Herong Lu 58.1 314
Edwin Chen 78.2 315
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Xiaoling 87.3 317 (% style="color:blue" %)**3. See Uplink Command**
Edwin Chen 78.2 318
Xiaoling 87.3 319 Command format: (% style="color:#4472c4" %)** AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data>**
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Herong Lu 58.1 321 example: AT+SENDB=01,02,8,05820802581ea0a5
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Edwin Chen 78.2 323 [[image:image-20220602162157-11.png||height="497" width="800"]]
Herong Lu 58.1 324
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Xiaoling 87.3 327 (% style="color:blue" %)**4. Check to see if TTN received the message**
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Edwin Chen 78.2 329 [[image:image-20220602162331-12.png||height="420" width="800"]]
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Xiaoling 87.3 333 == 3.6  Example: Send PC's CPU/RAM usage to TTN via python ==
Edwin Chen 81.1 334
Xiaoling 87.3 335
Edwin Chen 87.1 336 **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 81.1 337
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Xiaoling 87.3 339 (% style="color:red" %)**Preconditions:**
Edwin Chen 81.1 340
Xiaoling 87.3 341 (% style="color:red" %)**1. LA66 USB LoRaWAN Adapter works fine**
Edwin Chen 81.1 342
Xiaoling 87.3 343 (% style="color:red" %)**2. LA66 USB LoRaWAN Adapter  is registered with TTN**
Edwin Chen 81.1 344
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Xiaoling 87.3 347 (% style="color:blue" %)**Steps for usage:**
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349 (% style="color:blue" %)**1.**(%%) Press the reset switch RESET on the LA66 USB LoRaWAN Adapter
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351 (% style="color:blue" %)**2.**(%%) Run the python script in PC and see the TTN
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Edwin Chen 81.1 353 [[image:image-20220602115852-3.png||height="450" width="1187"]]
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Xiaoling 87.4 357 == 3.7  Example: Send & Get Messages via LoRaWAN in RPi ==
Edwin Chen 11.1 358
Xiaoling 87.4 359
Edwin Chen 79.1 360 Assume user already input the LA66 USB LoRaWAN Adapter OTAA Keys in TTN and there is already TTN network coverage.
Edwin Chen 12.1 361
Edwin Chen 79.1 362
Xiaoling 87.4 363 (% style="color:blue" %)**~1. Connect the LA66 USB LoRaWAN Adapter to the Raspberry Pi**
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Edwin Chen 78.2 365 [[image:image-20220602171233-2.png||height="538" width="800"]]
Herong Lu 43.1 366
Herong Lu 52.1 367
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Xiaoling 87.4 369 (% style="color:blue" %)**2. Install Minicom in RPi.**
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Edwin Chen 79.1 371 (% id="cke_bm_509388S" style="display:none" %) (%%)Enter the following command in the RPi terminal
Herong Lu 52.1 372
Xiaoling 87.4 373 (% style="background-color:yellow" %)**apt update**
Herong Lu 52.1 374
Xiaoling 87.4 375 (% style="background-color:yellow" %)**apt install minicom**
Herong Lu 52.1 376
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Edwin Chen 79.1 378 Use minicom to connect to the RPI's terminal
Herong Lu 52.1 379
Edwin Chen 79.1 380 [[image:image-20220602153146-3.png||height="439" width="500"]]
Herong Lu 52.1 381
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Xiaoling 87.4 383
384 (% style="color:blue" %)**3. Press the reset switch RST on the LA66 USB LoRaWAN Adapter.**
Edwin Chen 79.1 385 The following picture appears to prove that the LA66 USB LoRaWAN Adapter successfully entered the network
Edwin Chen 8.1 386
Edwin Chen 79.1 387 [[image:image-20220602154928-5.png||height="436" width="500"]]
Herong Lu 46.1 388
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Xiaoling 87.4 391 (% style="color:blue" %)**4. Send Uplink message**
Herong Lu 46.1 392
Xiaoling 87.4 393 Format: **(% style="color:#4472C4" %)AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data>**
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Edwin Chen 79.1 395 example: AT+SENDB=01,02,8,05820802581ea0a5
Herong Lu 46.1 396
Xiaoling 87.4 397
Edwin Chen 79.1 398 [[image:image-20220602160339-6.png||height="517" width="600"]]
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Xiaoling 87.4 400
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Edwin Chen 79.1 402 Check to see if TTN received the message
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404 [[image:image-20220602160627-7.png||height="369" width="800"]]
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Xiaoling 87.4 408 == 3.8  Example: LA66 USB Module got a message from LA66 LoRa Shield and send the sensor data to NodeRed. ==
Edwin Chen 11.1 409
Edwin Chen 13.1 410
Herong Lu 63.1 411
Xiaoling 87.4 412 == 3.9  Upgrade Firmware of LA66 USB LoRaWAN Adapter ==
Edwin Chen 73.1 413
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Xiaoling 87.4 417 = 4.  Order Info =
Edwin Chen 73.1 418
Xiaoling 87.4 419
420 Part Number: **LA66-XXX**, **LA66-LoRaWAN-Shield-XXX**  or  **LA66-USB-LoRaWAN-Adapter-XXX**
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422
Edwin Chen 86.1 423 **XXX**: The default frequency band
424
Xiaoling 87.4 425 * **AS923**:  LoRaWAN AS923 band
426 * **AU915**:  LoRaWAN AU915 band
427 * **EU433**:  LoRaWAN EU433 band
428 * **EU868**:  LoRaWAN EU868 band
429 * **KR920**:  LoRaWAN KR920 band
430 * **US915**:  LoRaWAN US915 band
431 * **IN865**:  LoRaWAN IN865 band
Edwin Chen 73.1 432 * **CN470**: LoRaWAN CN470 band
Xiaoling 87.4 433 * **PP**:  Peer to Peer LoRa Protocol
Edwin Chen 73.1 434
Edwin Chen 78.1 435
Xiaoling 87.4 436
437
438 = 5.  Reference =
439
Edwin Chen 78.1 440 * 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 79.1 442