Changes for page LA66 LoRaWAN Shield User Manual
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... ... @@ -1,469 +1,264 @@ 1 - 2 - 3 -**Table of Contents:** 4 - 1 +{{box cssClass="floatinginfobox" title="**Contents**"}} 5 5 {{toc/}} 3 +{{/box}} 6 6 5 += LA66 LoRaWAN Module = 7 7 7 +== What is LA66 LoRaWAN Module == 8 8 9 -= 1. LA66 LoRaWAN Module = 10 - 11 - 12 -== 1.1 What is LA66 LoRaWAN Module == 13 - 14 - 15 -((( 16 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. 17 -))) 18 18 19 -((( 20 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. 21 -))) 22 22 23 -((( 24 24 Each LA66 module includes a (% style="color:blue" %)**world-unique OTAA key**(%%) for LoRaWAN registration. 25 -))) 26 26 27 -((( 28 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. 29 -))) 30 30 31 -((( 32 32 LA66 is equipped with (% style="color:blue" %)**TCXO crystal**(%%) which ensures the module can achieve stable performance in extreme temperatures. 33 -))) 34 34 19 +== Features == 35 35 36 -== 1.2 Features == 37 37 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. 44 -* AT Command via UART-TTL interface 45 -* Firmware upgradable via UART interface 46 -* Ultra-long RF range 22 +== Specification == 47 47 48 - 49 - 50 -== 1.3 Specification == 51 - 52 -* CPU: 32-bit 48 MHz 53 -* Flash: 256KB 54 -* RAM: 64KB 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 69 - 70 - 71 - 72 -== 1.4 AT Command == 73 - 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. 75 - 76 - 77 -== 1.5 Dimension == 78 - 79 79 [[image:image-20220517072526-1.png]] 80 80 26 +Input Power Range: 1.8v ~~ 3.7v 81 81 28 +Power Consumption: < 4uA. 82 82 83 - == 1.6 PinMapping==30 +Frequency Range: 150 MHz ~~ 960 MHz 84 84 32 +Maximum Power +22 dBm constant RF output 85 85 86 - [[image:image-20220523101537-1.png]]34 +High sensitivity: -148 dBm 87 87 36 +Temperature: 88 88 38 +* Storage: -55 ~~ +125℃ 39 +* Operating: -40 ~~ +85℃ 89 89 90 - == 1.7 LandPattern ==41 +Humidity: 91 91 92 -[[image:image-20220517072821-2.png]] 43 +* Storage: 5 ~~ 95% (Non-Condensing) 44 +* Operating: 10 ~~ 95% (Non-Condensing) 93 93 46 +LoRa Tx Current: <90 mA at +17 dBm, 108 mA at +22 dBm 94 94 48 +LoRa Rx current: <9 mA 95 95 96 - =2. LA66 LoRaWAN Shield=50 +I/O Voltage: 3.3v 97 97 98 98 99 -== 2.1Overview==53 +== AT Command == 100 100 101 - LA66LoRaWAN Shield isthe Arduino shieldbaseon LA66. UserscanuseLA66 LoRaWANShieldtorapidlyaddLoRaWAN or peer-to-peerLoRawirelessfunctiontoArduinoprojects.55 +AT Command is valid over Main TXD and Main RXD. Serial Baud Rate is 9600. AT commands can be found in AT Command documents. 102 102 103 103 104 -== 2.2Features==58 +== Pin Mapping == 105 105 106 -* 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 60 +[[image:image-20220523101537-1.png]] 116 116 62 +== Land Pattern == 117 117 64 +[[image:image-20220517072821-2.png]] 118 118 119 -== 2.3 Specification == 120 120 121 -* 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 67 +== Part Number == 138 138 69 +Part Number: **LA66-XXX** 139 139 71 +**XX**: The default frequency band 140 140 141 -== 2.4 Pin Mapping & LED == 73 +* **AS923**: LoRaWAN AS923 band 74 +* **AU915**: LoRaWAN AU915 band 75 +* **EU433**: LoRaWAN EU433 band 76 +* **EU868**: LoRaWAN EU868 band 77 +* **KR920**: LoRaWAN KR920 band 78 +* **US915**: LoRaWAN US915 band 79 +* **IN865**: LoRaWAN IN865 band 80 +* **CN470**: LoRaWAN CN470 band 142 142 82 += LA66 LoRaWAN Shield = 143 143 84 +LA66 LoRaWAN Shield is the Arduino Breakout PCB to fast test the features of LA66 module and turn Arduino to support LoRaWAN. 144 144 145 -== 2.5Example: Use AT Commandtocommunicate withLA66module via Arduino UNO.==86 +== Pin Mapping & LED == 146 146 88 +== Example: Use AT Command to communicate with LA66 module via Arduino UNO. == 147 147 90 +== Example: Join TTN network and send an uplink message, get downlink message. == 148 148 149 -== 2.6Example:JoinTTN networkand send an uplink message,getdownlinkmessage. ==92 +== Example: Log Temperature Sensor(DHT11) and send data to TTN, show it in DataCake. == 150 150 94 +== Upgrade Firmware of LA66 LoRaWAN Shield == 151 151 96 +=== what needs to be used === 152 152 153 - == 2.7Example:Log TemperatureSensor(DHT11) andsend dataoTTN,showitinDataCake. ==98 +1.LA66 LoRaWAN Shield that needs to be upgraded 154 154 100 +2.Arduino 155 155 102 +3.USB TO TTL 156 156 157 - == 2.8 UpgradeFirmwareof LA66 LoRaWAN Shield ==104 +[[image:image-20220602100052-2.png]] 158 158 106 +=== Wiring Schematic === 159 159 160 - === 2.8.1 Items needed for update===108 +[[image:image-20220602101311-3.png]] 161 161 162 -1. LA66 LoRaWAN Shield 163 -1. Arduino 164 -1. USB TO TTL Adapter 110 +LA66 LoRaWAN Shield >>>>>>>>>>>>USB TTL 165 165 112 +GND >>>>>>>>>>>>GND 166 166 114 +TXD >>>>>>>>>>>>TXD 167 167 116 +RXD >>>>>>>>>>>>RXD 168 168 169 - [[image:image-20220602100052-2.png||height="385"width="600"]]118 +JP6 of LA66 LoRaWAN Shield needs to be connected with yellow jumper cap 170 170 120 +Connect to the PC after connecting the wires 171 171 172 - ===2.8.2Connection ===122 +[[image:image-20220602102240-4.png]] 173 173 124 +=== Upgrade steps === 174 174 175 - [[image:image-20220602101311-3.png||height="276"width="600"]]126 +==== Dial the SW1 of the LA66 LoRaWAN Shield to the ISP's location as shown in the figure below ==== 176 176 128 +[[image:image-20220602102824-5.png]] 177 177 178 - (%style="color:blue"%)**LA66 LoRaWAN Shield**(%%)**<->** (% style="color:blue"%)**USB TTL**130 +==== Press the RST switch on the LA66 LoRaWAN Shield once ==== 179 179 180 -(% style="background-color:yellow" %)**GND <-> GND 181 -TXD <-> TXD 182 -RXD <-> RXD** 132 +[[image:image-20220602104701-12.png]] 183 183 134 +==== Open the upgrade application software ==== 184 184 185 - Put ajumpercaponJP6ofLA66LoRaWANShield. (the jumpers topoweronA66 module)136 +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/]] 186 186 187 -Connect USB TTL Adapter to PC after connecting the wires 188 - 189 - 190 -[[image:image-20220602102240-4.png||height="304" width="600"]] 191 - 192 - 193 -=== 2.8.3 Upgrade steps === 194 - 195 - 196 -==== 1. Switch SW1 to put in ISP position ==== 197 - 198 - 199 -[[image:image-20220602102824-5.png||height="306" width="600"]] 200 - 201 - 202 - 203 -==== 2. Press the RST switch once ==== 204 - 205 - 206 -[[image:image-20220602104701-12.png||height="285" width="600"]] 207 - 208 - 209 - 210 -==== 3. Open the Upgrade tool (Tremo Programmer) in PC and Upgrade ==== 211 - 212 - 213 -(% 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/]]** 214 - 215 - 216 216 [[image:image-20220602103227-6.png]] 217 217 218 - 219 219 [[image:image-20220602103357-7.png]] 220 220 142 +===== Select the COM port corresponding to USB TTL ===== 221 221 222 - 223 -(% class="wikigeneratedid" id="HSelecttheCOMportcorrespondingtoUSBTTL" %) 224 -(% style="color:blue" %)**2. Select the COM port corresponding to USB TTL** 225 - 226 - 227 227 [[image:image-20220602103844-8.png]] 228 228 146 +===== Select the bin file to burn ===== 229 229 230 - 231 -(% class="wikigeneratedid" id="HSelectthebinfiletoburn" %) 232 -(% style="color:blue" %)**3. Select the bin file to burn** 233 - 234 - 235 235 [[image:image-20220602104144-9.png]] 236 236 237 - 238 238 [[image:image-20220602104251-10.png]] 239 239 240 - 241 241 [[image:image-20220602104402-11.png]] 242 242 154 +===== Click to start the download ===== 243 243 244 - 245 -(% class="wikigeneratedid" id="HClicktostartthedownload" %) 246 -(% style="color:blue" %)**4. Click to start the download** 247 - 248 248 [[image:image-20220602104923-13.png]] 249 249 158 +===== The following figure appears to prove that the burning is in progress ===== 250 250 251 - 252 -(% class="wikigeneratedid" id="HThefollowingfigureappearstoprovethattheburningisinprogress" %) 253 -(% style="color:blue" %)**5. Check update process** 254 - 255 - 256 256 [[image:image-20220602104948-14.png]] 257 257 162 +===== The following picture appears to prove that the burning is successful ===== 258 258 259 - 260 -(% class="wikigeneratedid" id="HThefollowingpictureappearstoprovethattheburningissuccessful" %) 261 -(% style="color:blue" %)**The following picture shows that the burning is successful** 262 - 263 263 [[image:image-20220602105251-15.png]] 264 264 166 += LA66 USB LoRaWAN Adapter = 265 265 168 +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. 266 266 267 - =3.LA66USB LoRaWANAdapter=170 +Before use, please make sure that the computer has installed the CP2102 driver 268 268 172 +== Pin Mapping & LED == 269 269 270 -== 3.1Overview==174 +== Example Send & Get Messages via LoRaWAN in PC == 271 271 272 - LA66 USB LoRaWAN Adapter is designed to fast turnUSB devicestosupportLoRaWAN wirelessfeatures. It combines a CP2101 USB TTLChip and LA66 LoRaWANmodule which caneasytoadd LoRaWAN wireless featuretoPC/ Mobile phone or an embedded device that has USB Interface.176 +Connect the LA66 LoRa Shield to the PC 273 273 178 +[[image:image-20220602171217-1.png||height="615" width="915"]] 274 274 275 -== 3.2 Features == 276 - 277 -* LoRaWAN USB adapter base on LA66 LoRaWAN module 278 -* Ultra-long RF range 279 -* Support LoRaWAN v1.0.4 protocol 280 -* Support peer-to-peer protocol 281 -* TCXO crystal to ensure RF performance on low temperature 282 -* Spring RF antenna 283 -* Available in different frequency LoRaWAN frequency bands. 284 -* World-wide unique OTAA keys. 285 -* AT Command via UART-TTL interface 286 -* Firmware upgradable via UART interface 287 - 288 - 289 - 290 -== 3.3 Specification == 291 - 292 -* CPU: 32-bit 48 MHz 293 -* Flash: 256KB 294 -* RAM: 64KB 295 -* Input Power Range: 5v 296 -* Frequency Range: 150 MHz ~~ 960 MHz 297 -* Maximum Power +22 dBm constant RF output 298 -* High sensitivity: -148 dBm 299 -* Temperature: 300 -** Storage: -55 ~~ +125℃ 301 -** Operating: -40 ~~ +85℃ 302 -* Humidity: 303 -** Storage: 5 ~~ 95% (Non-Condensing) 304 -** Operating: 10 ~~ 95% (Non-Condensing) 305 -* LoRa Tx Current: <90 mA at +17 dBm, 108 mA at +22 dBm 306 -* LoRa Rx current: <9 mA 307 - 308 - 309 - 310 -== 3.4 Pin Mapping & LED == 311 - 312 - 313 - 314 -== 3.5 Example: Send & Get Messages via LoRaWAN in PC == 315 - 316 - 317 -Assume user already input the LA66 USB LoRaWAN Adapter OTAA Keys in TTN and there is already TTN network coverage. 318 - 319 - 320 -(% style="color:blue" %)**1. Connect the LA66 USB LoRaWAN adapter to PC** 321 - 322 - 323 -[[image:image-20220602171217-1.png||height="538" width="800"]] 324 - 325 - 326 326 Open the serial port tool 327 327 328 328 [[image:image-20220602161617-8.png]] 329 329 330 -[[image:image-20220602161718-9.png||height=" 457" width="800"]]184 +[[image:image-20220602161718-9.png||height="529" width="927"]] 331 331 186 +Press the reset switch RST on the LA66 LoRa Shield. 332 332 188 +The following picture appears to prove that the LA66 LoRa Shield successfully entered the network 333 333 334 - (% style="color:blue" %)**2. Press the reset switch RST on theLA66USB LoRaWAN Adapter to reset it.**190 +[[image:image-20220602161935-10.png]] 335 335 336 - Thefollowingpicture appearstoprove that the LA66 USBLoRaWAN Adapterccessfully Jointhe LoRaWAN network192 +send instructions: AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data> 337 337 338 - 339 -[[image:image-20220602161935-10.png||height="498" width="800"]] 340 - 341 - 342 - 343 -(% style="color:blue" %)**3. See Uplink Command** 344 - 345 -Command format: (% style="color:#4472c4" %)** AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data>** 346 - 347 347 example: AT+SENDB=01,02,8,05820802581ea0a5 348 348 349 -[[image:image-20220602162157-11.png ||height="497" width="800"]]196 +[[image:image-20220602162157-11.png]] 350 350 198 +Check to see if TTN received the message 351 351 200 +[[image:image-20220602162331-12.png||height="547" width="1044"]] 352 352 353 - (%style="color:blue"%)**4.ChecktoseeifTTNreceivedthemessage**202 +== Example Send & Get Messages via LoRaWAN in RPi == 354 354 355 - [[image:image-20220602162331-12.png||height="420"width="800"]]204 +Connect the LA66 LoRa Shield to the RPI 356 356 206 +[[image:image-20220602171233-2.png||height="592" width="881"]] 357 357 208 +Log in to the RPI's terminal and connect to the serial port 358 358 359 - == 3.6 Example: Send PC's CPU/RAM usageto TTN viaython==210 +[[image:image-20220602153146-3.png]] 360 360 212 +Press the reset switch RST on the LA66 LoRa Shield. 213 +The following picture appears to prove that the LA66 LoRa Shield successfully entered the network 361 361 362 - **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]]215 +[[image:image-20220602154928-5.png]] 363 363 217 +send instructions: AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data> 364 364 365 -(% style="color:red" %)**Preconditions:** 366 - 367 -(% style="color:red" %)**1. LA66 USB LoRaWAN Adapter works fine** 368 - 369 -(% style="color:red" %)**2. LA66 USB LoRaWAN Adapter is registered with TTN** 370 - 371 - 372 - 373 -(% style="color:blue" %)**Steps for usage:** 374 - 375 -(% style="color:blue" %)**1.**(%%) Press the reset switch RESET on the LA66 USB LoRaWAN Adapter 376 - 377 -(% style="color:blue" %)**2.**(%%) Run the python script in PC and see the TTN 378 - 379 -[[image:image-20220602115852-3.png||height="450" width="1187"]] 380 - 381 - 382 - 383 -== 3.7 Example: Send & Get Messages via LoRaWAN in RPi == 384 - 385 - 386 -Assume user already input the LA66 USB LoRaWAN Adapter OTAA Keys in TTN and there is already TTN network coverage. 387 - 388 - 389 -(% style="color:blue" %)**1. Connect the LA66 USB LoRaWAN Adapter to the Raspberry Pi** 390 - 391 -[[image:image-20220602171233-2.png||height="538" width="800"]] 392 - 393 - 394 - 395 -(% style="color:blue" %)**2. Install Minicom in RPi.** 396 - 397 -(% id="cke_bm_509388S" style="display:none" %) (%%)Enter the following command in the RPi terminal 398 - 399 - (% style="background-color:yellow" %)**apt update** 400 - 401 - (% style="background-color:yellow" %)**apt install minicom** 402 - 403 - 404 -Use minicom to connect to the RPI's terminal 405 - 406 -[[image:image-20220602153146-3.png||height="439" width="500"]] 407 - 408 - 409 - 410 -(% style="color:blue" %)**3. Press the reset switch RST on the LA66 USB LoRaWAN Adapter.** 411 - 412 -The following picture appears to prove that the LA66 USB LoRaWAN Adapter successfully entered the network. 413 - 414 - 415 -[[image:image-20220602154928-5.png||height="436" width="500"]] 416 - 417 - 418 - 419 -(% style="color:blue" %)**4. Send Uplink message** 420 - 421 -Format: (% style="color:#4472c4" %)**AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data>** 422 - 423 423 example: AT+SENDB=01,02,8,05820802581ea0a5 424 424 221 +[[image:image-20220602160339-6.png]] 425 425 426 -[[image:image-20220602160339-6.png||height="517" width="600"]] 427 - 428 - 429 - 430 430 Check to see if TTN received the message 431 431 432 -[[image:image-20220602160627-7.png||height=" 369" width="800"]]225 +[[image:image-20220602160627-7.png||height="468" width="1013"]] 433 433 227 +=== Install Minicom === 434 434 229 +Enter the following command in the RPI terminal 435 435 436 - == 3.8 Example: LA66 USB Module gota message from LA66 LoRa Shieldnd sendthesensor data to NodeRed. ==231 +apt update 437 437 233 +[[image:image-20220602143155-1.png]] 438 438 235 +apt install minicom 439 439 440 - == 3.9 UpgradeFirmwareof LA66 USB LoRaWAN Adapter ==237 +[[image:image-20220602143744-2.png]] 441 441 239 +=== Send PC's CPU/RAM usage to TTN via script. === 442 442 241 +==== Take python as an example: ==== 443 443 243 +===== Preconditions: ===== 444 444 445 - = 4.OrderInfo=245 +1.LA66 USB LoRaWAN Adapter works fine 446 446 247 +2.LA66 USB LoRaWAN Adapter is registered with TTN 447 447 448 - **Part Number:** (% style="color:blue" %)**LA66-XXX**(%%), (% style="color:blue"%)**LA66-LoRaWAN-Shield-XXX**(%%) **or**(% style="color:blue" %)**LA66-USB-LoRaWAN-Adapter-XXX**249 +===== Steps for usage ===== 449 449 251 +1.Press the reset switch RESET on the LA66 USB LoRaWAN Adapter 450 450 451 - (%style="color:blue"%)**XXX**(%%):Thedefaultfrequencyband253 +2.Run the script and see the TTN 452 452 453 -* (% style="color:red" %)**AS923**(%%): LoRaWAN AS923 band 454 -* (% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band 455 -* (% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band 456 -* (% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band 457 -* (% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band 458 -* (% style="color:red" %)**US915**(%%): LoRaWAN US915 band 459 -* (% style="color:red" %)**IN865**(%%): LoRaWAN IN865 band 460 -* (% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band 461 -* (% style="color:red" %)**PP**(%%): Peer to Peer LoRa Protocol 255 +[[image:image-20220602115852-3.png]] 462 462 463 463 464 464 465 -= 5.Reference =259 +== Example: LA66 USB Module got a message from LA66 LoRa Shield and send the sensor data to NodeRed. == 466 466 467 -* Hardware Design File for LA66 LoRaWAN Shield, LA66 USB LoRaWAN Adapter : [[Download>>https://www.dropbox.com/sh/a3wbmdcvqjxaqw5/AADZfvAiykJTK624RgMquH86a?dl=0]] 468 468 262 +== Upgrade Firmware of LA66 USB LoRaWAN Adapter == 263 + 469 469