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Wiki source code of LA66 LoRaWAN Module

Version 87.16 by Xiaoling on 2022/07/13 10:10
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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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14
Xiaoling 87.15 15 (((
Edwin Chen 65.1 16 (% 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.
Xiaoling 87.15 17 )))
Edwin Chen 1.1 18
Xiaoling 87.15 19 (((
Edwin Chen 65.1 20 (% 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.
Xiaoling 87.15 21 )))
Edwin Chen 1.1 22
Xiaoling 87.15 23 (((
Edwin Chen 65.1 24 Each LA66 module includes a (% style="color:blue" %)**world-unique OTAA key**(%%) for LoRaWAN registration.
Xiaoling 87.15 25 )))
Edwin Chen 1.1 26
Xiaoling 87.15 27 (((
Edwin Chen 65.1 28 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.
Xiaoling 87.15 29 )))
Edwin Chen 1.1 30
Xiaoling 87.15 31 (((
Edwin Chen 65.1 32 LA66 is equipped with (% style="color:blue" %)**TCXO crystal**(%%) which ensures the module can achieve stable performance in extreme temperatures.
Xiaoling 87.15 33 )))
Edwin Chen 1.1 34
Edwin Chen 67.1 35
Xiaoling 87.2 36 == 1.2  Features ==
Edwin Chen 64.1 37
Edwin Chen 68.1 38 * Support LoRaWAN v1.0.4 protocol
39 * Support peer-to-peer protocol
40 * TCXO crystal to ensure RF performance on low temperature
41 * SMD Antenna pad and i-pex antenna connector
42 * Available in different frequency LoRaWAN frequency bands.
43 * World-wide unique OTAA keys.
Edwin Chen 69.1 44 * AT Command via UART-TTL interface
45 * Firmware upgradable via UART interface
46 * Ultra-long RF range
Edwin Chen 64.1 47
Xiaoling 87.7 48
Xiaoling 87.14 49
Xiaoling 87.2 50 == 1.3  Specification ==
51
Edwin Chen 68.1 52 * CPU: 32-bit 48 MHz
53 * Flash: 256KB
54 * RAM: 64KB
Edwin Chen 66.1 55 * Input Power Range: 1.8v ~~ 3.7v
56 * Power Consumption: < 4uA.
57 * Frequency Range: 150 MHz ~~ 960 MHz
58 * Maximum Power +22 dBm constant RF output
59 * High sensitivity: -148 dBm
60 * Temperature:
61 ** Storage: -55 ~~ +125℃
62 ** Operating: -40 ~~ +85℃
63 * Humidity:
64 ** Storage: 5 ~~ 95% (Non-Condensing)
65 ** Operating: 10 ~~ 95% (Non-Condensing)
66 * LoRa Tx Current: <90 mA at +17 dBm, 108 mA at +22 dBm
67 * LoRa Rx current: <9 mA
68 * I/O Voltage: 3.3v
Edwin Chen 1.1 69
Xiaoling 87.7 70
Xiaoling 87.14 71
Xiaoling 87.2 72 == 1.4  AT Command ==
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Edwin Chen 66.1 74 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 75
Edwin Chen 3.1 76
Xiaoling 87.2 77 == 1.5  Dimension ==
Edwin Chen 3.1 78
Edwin Chen 66.1 79 [[image:image-20220517072526-1.png]]
Edwin Chen 3.1 80
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Edwin Chen 5.1 82
Xiaoling 87.2 83 == 1.6  Pin Mapping ==
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Xiaoling 10.2 86 [[image:image-20220523101537-1.png]]
Edwin Chen 5.1 87
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Xiaoling 87.2 89
90 == 1.7  Land Pattern ==
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Edwin Chen 5.1 92 [[image:image-20220517072821-2.png]]
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Xiaoling 87.2 96 = 2.  LA66 LoRaWAN Shield =
Edwin Chen 6.1 97
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Xiaoling 87.2 99 == 2.1  Overview ==
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Edwin Chen 71.1 101 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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103
Xiaoling 87.2 104 == 2.2  Features ==
Edwin Chen 71.1 105
106 * Arduino Shield base on LA66 LoRaWAN module
107 * Support LoRaWAN v1.0.4 protocol
108 * Support peer-to-peer protocol
109 * TCXO crystal to ensure RF performance on low temperature
110 * SMA connector
111 * Available in different frequency LoRaWAN frequency bands.
112 * World-wide unique OTAA keys.
113 * AT Command via UART-TTL interface
114 * Firmware upgradable via UART interface
115 * Ultra-long RF range
116
Xiaoling 87.8 117
Xiaoling 87.14 118
Xiaoling 87.2 119 == 2.3  Specification ==
120
Edwin Chen 71.1 121 * CPU: 32-bit 48 MHz
122 * Flash: 256KB
123 * RAM: 64KB
124 * Input Power Range: 1.8v ~~ 3.7v
125 * Power Consumption: < 4uA.
126 * Frequency Range: 150 MHz ~~ 960 MHz
127 * Maximum Power +22 dBm constant RF output
128 * High sensitivity: -148 dBm
129 * Temperature:
130 ** Storage: -55 ~~ +125℃
131 ** Operating: -40 ~~ +85℃
132 * Humidity:
133 ** Storage: 5 ~~ 95% (Non-Condensing)
134 ** Operating: 10 ~~ 95% (Non-Condensing)
135 * LoRa Tx Current: <90 mA at +17 dBm, 108 mA at +22 dBm
136 * LoRa Rx current: <9 mA
137 * I/O Voltage: 3.3v
138
Xiaoling 87.8 139
Xiaoling 87.14 140
Xiaoling 87.2 141 == 2.4  Pin Mapping & LED ==
Edwin Chen 11.1 142
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Xiaoling 87.2 145 == 2.5  Example: Use AT Command to communicate with LA66 module via Arduino UNO. ==
Edwin Chen 11.1 146
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Xiaoling 87.2 148
149 == 2.6  Example: Join TTN network and send an uplink message, get downlink message. ==
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153 == 2.7  Example: Log Temperature Sensor(DHT11) and send data to TTN, show it in DataCake. ==
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157 == 2.8  Upgrade Firmware of LA66 LoRaWAN Shield ==
158
159
160 === 2.8.1  Items needed for update ===
161
Edwin Chen 74.1 162 1. LA66 LoRaWAN Shield
163 1. Arduino
164 1. USB TO TTL Adapter
Edwin Chen 13.1 165
Xiaoling 87.14 166
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Edwin Chen 75.1 169 [[image:image-20220602100052-2.png||height="385" width="600"]]
Herong Lu 20.1 170
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Xiaoling 87.2 172 === 2.8.2  Connection ===
Herong Lu 20.1 173
Xiaoling 87.2 174
Edwin Chen 75.1 175 [[image:image-20220602101311-3.png||height="276" width="600"]]
Herong Lu 20.1 176
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Xiaoling 87.2 178 (% style="color:blue" %)**LA66 LoRaWAN Shield**(%%)  **<->** (% style="color:blue" %)**USB TTL**
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Xiaoling 87.16 180 (((
Xiaoling 87.2 181 (% style="background-color:yellow" %)**GND  <-> GND
Xiaoling 87.8 182 TXD  <->  TXD
183 RXD  <->  RXD**
Xiaoling 87.16 184 )))
Xiaoling 87.2 185
186
Edwin Chen 77.1 187 Put a jumper cap on JP6 of LA66 LoRaWAN Shield. ( the jumper is to power on LA66 module)
Herong Lu 20.1 188
Edwin Chen 75.1 189 Connect USB TTL Adapter to PC after connecting the wires
Herong Lu 20.1 190
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Edwin Chen 75.1 192 [[image:image-20220602102240-4.png||height="304" width="600"]]
Herong Lu 20.1 193
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Xiaoling 87.2 195 === 2.8.3  Upgrade steps ===
Herong Lu 20.1 196
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Xiaoling 87.2 198 ==== 1.  Switch SW1 to put in ISP position ====
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Edwin Chen 75.1 201 [[image:image-20220602102824-5.png||height="306" width="600"]]
Herong Lu 32.1 202
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Xiaoling 87.9 204
Xiaoling 87.2 205 ==== 2.  Press the RST switch once ====
Herong Lu 32.1 206
Xiaoling 87.10 207
Edwin Chen 75.1 208 [[image:image-20220602104701-12.png||height="285" width="600"]]
Herong Lu 32.1 209
Edwin Chen 75.1 210
Xiaoling 87.9 211
Xiaoling 87.2 212 ==== 3.  Open the Upgrade tool (Tremo Programmer) in PC and Upgrade ====
Edwin Chen 75.1 213
Herong Lu 39.1 214
Xiaoling 87.2 215 (% 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 32.1 218 [[image:image-20220602103227-6.png]]
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Xiaoling 87.2 220
Herong Lu 32.1 221 [[image:image-20220602103357-7.png]]
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Xiaoling 87.2 224
Edwin Chen 76.1 225 (% class="wikigeneratedid" id="HSelecttheCOMportcorrespondingtoUSBTTL" %)
Xiaoling 87.2 226 (% style="color:blue" %)**2. Select the COM port corresponding to USB TTL**
Edwin Chen 76.1 227
Xiaoling 87.2 228
Herong Lu 32.1 229 [[image:image-20220602103844-8.png]]
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Xiaoling 87.2 232
Edwin Chen 76.1 233 (% class="wikigeneratedid" id="HSelectthebinfiletoburn" %)
Xiaoling 87.2 234 (% style="color:blue" %)**3. Select the bin file to burn**
Edwin Chen 76.1 235
Xiaoling 87.2 236
Herong Lu 32.1 237 [[image:image-20220602104144-9.png]]
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Xiaoling 87.2 239
Herong Lu 32.1 240 [[image:image-20220602104251-10.png]]
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Xiaoling 87.2 242
Herong Lu 32.1 243 [[image:image-20220602104402-11.png]]
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Xiaoling 87.2 246
Edwin Chen 76.1 247 (% class="wikigeneratedid" id="HClicktostartthedownload" %)
Xiaoling 87.2 248 (% style="color:blue" %)**4. Click to start the download**
Edwin Chen 76.1 249
Herong Lu 32.1 250 [[image:image-20220602104923-13.png]]
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Xiaoling 87.10 253
Edwin Chen 76.1 254 (% class="wikigeneratedid" id="HThefollowingfigureappearstoprovethattheburningisinprogress" %)
Xiaoling 87.2 255 (% style="color:blue" %)**5. Check update process**
Edwin Chen 76.1 256
Xiaoling 87.2 257
Herong Lu 32.1 258 [[image:image-20220602104948-14.png]]
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Xiaoling 87.2 261
Edwin Chen 76.1 262 (% class="wikigeneratedid" id="HThefollowingpictureappearstoprovethattheburningissuccessful" %)
Xiaoling 87.2 263 (% style="color:blue" %)**The following picture shows that the burning is successful**
Edwin Chen 76.1 264
Herong Lu 32.1 265 [[image:image-20220602105251-15.png]]
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Edwin Chen 72.1 267
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Xiaoling 87.2 269 = 3.  LA66 USB LoRaWAN Adapter =
Edwin Chen 6.1 270
Edwin Chen 7.1 271
Xiaoling 87.2 272 == 3.1  Overview ==
273
Edwin Chen 73.1 274 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 52.1 275
Edwin Chen 73.1 276
Xiaoling 87.2 277 == 3.2  Features ==
Edwin Chen 73.1 278
279 * LoRaWAN USB adapter base on LA66 LoRaWAN module
280 * Ultra-long RF range
281 * Support LoRaWAN v1.0.4 protocol
282 * Support peer-to-peer protocol
283 * TCXO crystal to ensure RF performance on low temperature
284 * Spring RF antenna
285 * Available in different frequency LoRaWAN frequency bands.
286 * World-wide unique OTAA keys.
287 * AT Command via UART-TTL interface
288 * Firmware upgradable via UART interface
289
Xiaoling 87.10 290
Xiaoling 87.14 291
Xiaoling 87.3 292 == 3.3  Specification ==
Edwin Chen 73.1 293
294 * CPU: 32-bit 48 MHz
295 * Flash: 256KB
296 * RAM: 64KB
297 * Input Power Range: 5v
298 * Frequency Range: 150 MHz ~~ 960 MHz
299 * Maximum Power +22 dBm constant RF output
300 * High sensitivity: -148 dBm
301 * Temperature:
302 ** Storage: -55 ~~ +125℃
303 ** Operating: -40 ~~ +85℃
304 * Humidity:
305 ** Storage: 5 ~~ 95% (Non-Condensing)
306 ** Operating: 10 ~~ 95% (Non-Condensing)
307 * LoRa Tx Current: <90 mA at +17 dBm, 108 mA at +22 dBm
308 * LoRa Rx current: <9 mA
309
Xiaoling 87.10 310
Xiaoling 87.14 311
Xiaoling 87.3 312 == 3.4  Pin Mapping & LED ==
Edwin Chen 7.1 313
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Xiaoling 87.3 315
316 == 3.5  Example: Send & Get Messages via LoRaWAN in PC ==
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Edwin Chen 78.2 319 Assume user already input the LA66 USB LoRaWAN Adapter OTAA Keys in TTN and there is already TTN network coverage.
Herong Lu 58.1 320
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Xiaoling 87.3 322 (% style="color:blue" %)**1. Connect the LA66 USB LoRaWAN adapter to PC**
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Edwin Chen 78.2 325 [[image:image-20220602171217-1.png||height="538" width="800"]]
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Xiaoling 87.3 327
Herong Lu 58.1 328 Open the serial port tool
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330 [[image:image-20220602161617-8.png]]
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Edwin Chen 78.2 332 [[image:image-20220602161718-9.png||height="457" width="800"]]
Herong Lu 58.1 333
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Xiaoling 87.3 336 (% style="color:blue" %)**2. Press the reset switch RST on the LA66 USB LoRaWAN Adapter to reset it.**
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Edwin Chen 78.2 338 The following picture appears to prove that the LA66 USB LoRaWAN Adapter successfully Join the LoRaWAN network
Herong Lu 58.1 339
Xiaoling 87.3 340
Edwin Chen 78.2 341 [[image:image-20220602161935-10.png||height="498" width="800"]]
Herong Lu 58.1 342
Edwin Chen 78.2 343
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Xiaoling 87.3 345 (% style="color:blue" %)**3. See Uplink Command**
Edwin Chen 78.2 346
Xiaoling 87.3 347 Command format: (% style="color:#4472c4" %)** AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data>**
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Herong Lu 58.1 349 example: AT+SENDB=01,02,8,05820802581ea0a5
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Edwin Chen 78.2 351 [[image:image-20220602162157-11.png||height="497" width="800"]]
Herong Lu 58.1 352
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Xiaoling 87.3 355 (% style="color:blue" %)**4. Check to see if TTN received the message**
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Edwin Chen 78.2 357 [[image:image-20220602162331-12.png||height="420" width="800"]]
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Xiaoling 87.3 361 == 3.6  Example: Send PC's CPU/RAM usage to TTN via python ==
Edwin Chen 81.1 362
Xiaoling 87.3 363
Edwin Chen 87.1 364 **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 81.1 365
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Xiaoling 87.3 367 (% style="color:red" %)**Preconditions:**
Edwin Chen 81.1 368
Xiaoling 87.3 369 (% style="color:red" %)**1. LA66 USB LoRaWAN Adapter works fine**
Edwin Chen 81.1 370
Xiaoling 87.3 371 (% style="color:red" %)**2. LA66 USB LoRaWAN Adapter  is registered with TTN**
Edwin Chen 81.1 372
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Xiaoling 87.3 375 (% style="color:blue" %)**Steps for usage:**
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377 (% style="color:blue" %)**1.**(%%) Press the reset switch RESET on the LA66 USB LoRaWAN Adapter
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379 (% style="color:blue" %)**2.**(%%) Run the python script in PC and see the TTN
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Edwin Chen 81.1 381 [[image:image-20220602115852-3.png||height="450" width="1187"]]
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Xiaoling 87.4 385 == 3.7  Example: Send & Get Messages via LoRaWAN in RPi ==
Edwin Chen 11.1 386
Xiaoling 87.4 387
Edwin Chen 79.1 388 Assume user already input the LA66 USB LoRaWAN Adapter OTAA Keys in TTN and there is already TTN network coverage.
Edwin Chen 12.1 389
Edwin Chen 79.1 390
Xiaoling 87.5 391 (% style="color:blue" %)**1. Connect the LA66 USB LoRaWAN Adapter to the Raspberry Pi**
Xiaoling 87.4 392
Edwin Chen 78.2 393 [[image:image-20220602171233-2.png||height="538" width="800"]]
Herong Lu 43.1 394
Herong Lu 52.1 395
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Xiaoling 87.4 397 (% style="color:blue" %)**2. Install Minicom in RPi.**
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Edwin Chen 79.1 399 (% id="cke_bm_509388S" style="display:none" %) (%%)Enter the following command in the RPi terminal
Herong Lu 52.1 400
Xiaoling 87.4 401 (% style="background-color:yellow" %)**apt update**
Herong Lu 52.1 402
Xiaoling 87.4 403 (% style="background-color:yellow" %)**apt install minicom**
Herong Lu 52.1 404
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Edwin Chen 79.1 406 Use minicom to connect to the RPI's terminal
Herong Lu 52.1 407
Edwin Chen 79.1 408 [[image:image-20220602153146-3.png||height="439" width="500"]]
Herong Lu 52.1 409
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Xiaoling 87.4 411
Xiaoling 87.11 412 (% style="color:blue" %)**3. Press the reset switch RST on the LA66 USB LoRaWAN Adapter.**
Edwin Chen 8.1 413
Xiaoling 87.11 414 The following picture appears to prove that the LA66 USB LoRaWAN Adapter successfully entered the network.
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Edwin Chen 79.1 417 [[image:image-20220602154928-5.png||height="436" width="500"]]
Herong Lu 46.1 418
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Xiaoling 87.4 421 (% style="color:blue" %)**4. Send Uplink message**
Herong Lu 46.1 422
Xiaoling 87.5 423 Format: (% style="color:#4472c4" %)**AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data>**
Xiaoling 87.4 424
Edwin Chen 79.1 425 example: AT+SENDB=01,02,8,05820802581ea0a5
Herong Lu 46.1 426
Xiaoling 87.4 427
Edwin Chen 79.1 428 [[image:image-20220602160339-6.png||height="517" width="600"]]
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Xiaoling 87.4 430
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Edwin Chen 79.1 432 Check to see if TTN received the message
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434 [[image:image-20220602160627-7.png||height="369" width="800"]]
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Xiaoling 87.4 438 == 3.8  Example: LA66 USB Module got a message from LA66 LoRa Shield and send the sensor data to NodeRed. ==
Edwin Chen 11.1 439
Edwin Chen 13.1 440
Herong Lu 63.1 441
Xiaoling 87.4 442 == 3.9  Upgrade Firmware of LA66 USB LoRaWAN Adapter ==
Edwin Chen 73.1 443
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Xiaoling 87.4 447 = 4.  Order Info =
Edwin Chen 73.1 448
Xiaoling 87.4 449
Xiaoling 87.5 450 **Part Number:**  (% style="color:blue" %)**LA66-XXX**(%%), (% style="color:blue" %)**LA66-LoRaWAN-Shield-XXX** (%%) **or**  (% style="color:blue" %)**LA66-USB-LoRaWAN-Adapter-XXX**
Xiaoling 87.4 451
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Xiaoling 87.5 453 (% style="color:blue" %)**XXX**(%%): The default frequency band
Edwin Chen 86.1 454
Xiaoling 87.5 455 * (% style="color:red" %)**AS923**(%%):  LoRaWAN AS923 band
456 * (% style="color:red" %)**AU915**(%%):  LoRaWAN AU915 band
457 * (% style="color:red" %)**EU433**(%%):  LoRaWAN EU433 band
458 * (% style="color:red" %)**EU868**(%%):  LoRaWAN EU868 band
459 * (% style="color:red" %)**KR920**(%%):  LoRaWAN KR920 band
460 * (% style="color:red" %)**US915**(%%):  LoRaWAN US915 band
461 * (% style="color:red" %)**IN865**(%%):  LoRaWAN IN865 band
462 * (% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
463 * (% style="color:red" %)**PP**(%%):  Peer to Peer LoRa Protocol
Edwin Chen 73.1 464
Edwin Chen 78.1 465
Xiaoling 87.4 466
467 = 5.  Reference =
468
Edwin Chen 78.1 469 * 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 79.1 471