Last modified by Mengting Qiu on 2024/04/02 16:54

From version 33.2
edited by Xiaoling
on 2022/09/13 09:14
Change comment: There is no comment for this version
To version 33.6
edited by Xiaoling
on 2022/09/13 09:50
Change comment: There is no comment for this version

Summary

Details

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Content
... ... @@ -71,6 +71,9 @@
71 71  * - B20 @H-FDD: 800MHz
72 72  * - B28 @H-FDD: 700MHz
73 73  
74 +
75 +
76 +
74 74  == 1.4  Probe Specification ==
75 75  
76 76  
... ... @@ -90,11 +90,17 @@
90 90  * IP67 Protection
91 91  * Length: 3.5 meters
92 92  
96 +
97 +
98 +
93 93  == 1.5 ​ Applications ==
94 94  
95 95  
96 96  * Smart Agriculture
97 97  
104 +
105 +
106 +
98 98  == 1.6  Pin mapping and power on ==
99 99  
100 100  
... ... @@ -193,8 +193,6 @@
193 193  * (% style="color:#037691" %)**AT+SERVADDR=120.24.4.116,5683   ** (%%) ~/~/  to set CoAP server address and port
194 194  * (% style="color:#037691" %)**AT+URI=5,11,"mqtt",11,"coap",12,"0",15,"c=text1",23,"0" ** (%%) ~/~/  Set COAP resource path
195 195  
196 -
197 -
198 198  For parameter description, please refer to AT command set
199 199  
200 200  [[image:image-20220907171221-9.png]]
... ... @@ -212,7 +212,7 @@
212 212  This feature is supported since firmware version v1.0.1
213 213  
214 214  * (% style="color:#037691" %)**AT+PRO=2   ** (%%) ~/~/  Set to use UDP protocol to uplink
215 -* (% style="color:#037691" %)**AT+SERVADDR=120.24.4.116,5601  ** (%%) ~/~/  to set UDP server address and port
222 +* (% style="color:#037691" %)**AT+SERVADDR=120.24.4.116,5601     ** (%%) ~/~/  to set UDP server address and port
216 216  * (% style="color:#037691" %)**AT+CFM=1       ** (%%) ~/~/  If the server does not respond, this command is unnecessary
217 217  
218 218  
... ... @@ -238,8 +238,6 @@
238 238  * (% style="color:#037691" %)**AT+PUBTOPIC=PUB                    ** (%%) ~/~/  Set the sending topic of MQTT
239 239  * (% style="color:#037691" %)**AT+SUBTOPIC=SUB          ** (%%) ~/~/  Set the subscription topic of MQTT
240 240  
241 -
242 -
243 243  ​ [[image:image-20220907171221-13.png]]
244 244  
245 245  
... ... @@ -296,7 +296,6 @@
296 296  |(% style="width:96px" %)**Size(bytes)**|(% style="width:82px" %)**8**|(% style="width:42px" %)**2**|(% style="width:48px" %)**2**|(% style="width:124px" %)1|(% style="width:58px" %)1|(% style="width:82px" %)1|(% style="width:113px" %)2|(% style="width:134px" %)2|(% style="width:100px" %)4|(% style="width:137px" %)2|(% style="width:110px" %)2|(% style="width:122px" %)4
297 297  |(% style="width:96px" %)**Value**|(% style="width:82px" %)Device ID|(% style="width:42px" %)Ver|(% style="width:48px" %)BAT|(% style="width:124px" %)Signal Strength|(% style="width:58px" %)MOD|(% style="width:82px" %)Interrupt|(% style="width:113px" %)Leaf moisture|(% style="width:134px" %)Leaf Temperature|(% style="width:100px" %)Time stamp|(% style="width:137px" %)Leaf Temperature|(% style="width:110px" %)Leaf moisture|(% style="width:122px" %)Time stamp  .....
298 298  
299 -
300 300  If we use the MQTT client to subscribe to this MQTT topic, we can see the following information when the NLMS01 uplink data.
301 301  
302 302  
... ... @@ -325,26 +325,35 @@
325 325  
326 326  == 2.4  Payload Explanation and Sensor Interface ==
327 327  
332 +
328 328  === 2.4.1  Device ID ===
329 329  
335 +
330 330  By default, the Device ID equal to the last 15 bits of IMEI.
331 331  
332 -User can use **AT+DEUI** to set Device ID
338 +User can use (% style="color:#037691" %)**AT+DEUI**(%%) to set Device ID
333 333  
334 -**Example:**
335 335  
341 +(% style="color:blue" %)**Example**:
342 +
336 336  AT+DEUI=868411056754138
337 337  
338 338  The Device ID is stored in a none-erase area, Upgrade the firmware or run AT+FDR won't erase Device ID.
339 339  
347 +
348 +
340 340  === 2.4.2  Version Info ===
341 341  
351 +
342 342  Specify the software version: 0x64=100, means firmware version 1.00.
343 343  
344 344  For example: 0x00 64 : this device is NLMS01 with firmware version 1.0.0.
345 345  
356 +
357 +
346 346  === 2.4.3  Battery Info ===
347 347  
360 +
348 348  Check the battery voltage for NLMS01.
349 349  
350 350  Ex1: 0x0B45 = 2885mV
... ... @@ -351,12 +351,16 @@
351 351  
352 352  Ex2: 0x0B49 = 2889mV
353 353  
367 +
368 +
354 354  === 2.4.4  Signal Strength ===
355 355  
371 +
356 356  NB-IoT Network signal Strength.
357 357  
358 -**Ex1: 0x1d = 29**
359 359  
375 +(% style="color:blue" %)**Ex1: 0x1d = 29**
376 +
360 360  **0**  -113dBm or less
361 361  
362 362  **1**  -111dBm
... ... @@ -367,37 +367,49 @@
367 367  
368 368  **99**    Not known or not detectable
369 369  
387 +
388 +
370 370  === 2.4.5  Leaf moisture ===
371 371  
372 -Get the moisture of the **Leaf**. The value range of the register is 300-1000(Decimal), divide this value by 100 to get the percentage of moisture in the **Leaf**.
373 373  
374 -For example, if the data you get from the register is **__0x05 0xDC__**, the moisture content in the **Leaf** is
392 +Get the moisture of the (% style="color:#037691" %)**Leaf**(%%). The value range of the register is 300-1000(Decimal), divide this value by 100 to get the percentage of moisture in the Leaf.
375 375  
376 -**0229(H) = 549(D) /100 = 54.9.**
394 +For example, if the data you get from the register is (% style="color:#037691" %)**__0x05 0xDC__**(%%), the moisture content in the (% style="color:#037691" %)**Leaf**(%%) is
377 377  
396 +(% style="color:blue" %)**0229(H) = 549(D) /100 = 54.9.**
397 +
398 +
399 +
378 378  === 2.4.6  Leaf Temperature ===
379 379  
380 -Get the temperature in the **Leaf**. The value range of the register is -4000 - +800(Decimal), divide this value by 100 to get the temperature in the **Leaf**. For example, if the data you get from the register is **__0x09 0xEC__**, the temperature content in the **Leaf **is
381 381  
382 -**Example**:
403 +Get the temperature in the Leaf. The value range of the register is -4000 - +800(Decimal), divide this value by 100 to get the temperature in the Leaf. For example, if the data you get from the register is (% style="color:#037691" %)**__0x09 0xEC__**(%%), the temperature content in the (% style="color:#037691" %)**Leaf **(%%)is
383 383  
384 -If payload is 0105H: ((0x0105 & 0x8000)>>15 === 0),temp = 0105(H)/10 = 26.1 °C
405 +(% style="color:blue" %)**Example**:
385 385  
386 -If payload is FF7EH: ((FF7E & 0x8000)>>15 ===1),temp = (FF7E(H)-FFFF(H))/10 = -12.9 °C
407 +If payload is **0105H**: ((0x0105 & 0x8000)>>15 === 0),temp = 0105(H)/10 = 26.1 °C
387 387  
409 +If payload is **FF7EH**: ((FF7E & 0x8000)>>15 ===1),temp = (FF7E(H)-FFFF(H))/10 = -12.9 °C
410 +
411 +
412 +
388 388  === 2.4.7  Timestamp ===
389 389  
415 +
390 390  Time stamp : 0x6315537b =1662342011
391 391  
392 392  Convert Unix timestamp to time 2022-9-5 9:40:11.
393 393  
420 +
421 +
394 394  === 2.4.8  Digital Interrupt ===
395 395  
396 -Digital Interrupt refers to pin **GPIO_EXTI**, and there are different trigger methods. When there is a trigger, the NLMS01 will send a packet to the server.
397 397  
425 +Digital Interrupt refers to pin (% style="color:#037691" %)**GPIO_EXTI**(%%), and there are different trigger methods. When there is a trigger, the NLMS01 will send a packet to the server.
426 +
398 398  The command is:
399 399  
400 -**AT+INTMOD=3 ** ~/~/(more info about INMOD please refer [[**AT Command Manual**>>url:https://www.dragino.com/downloads/downloads/NB-IoT/NBSN95/DRAGINO_NBSN95-NB_AT%20Commands_v1.1.0.pdf]])**.**
429 +(% style="color:blue" %)**AT+INTMOD=3 ** (%%) ~/~/  (more info about INMOD please refer [[**AT Command Manual**>>url:https://www.dragino.com/downloads/downloads/NB-IoT/NBSN95/DRAGINO_NBSN95-NB_AT%20Commands_v1.1.0.pdf]])**.**
401 401  
402 402  The lower four bits of this data field shows if this packet is generated by interrupt or not. Click here for the hardware and software set up.
403 403  
... ... @@ -407,27 +407,34 @@
407 407  
408 408  0x(01): Interrupt Uplink Packet.
409 409  
439 +
440 +
410 410  === 2.4.9  ​+5V Output ===
411 411  
443 +
412 412  NLMS01 will enable +5V output before all sampling and disable the +5v after all sampling. 
413 413  
414 414  The 5V output time can be controlled by AT Command.
415 415  
416 -**AT+5VT=1000**
448 +(% style="color:blue" %)**AT+5VT=1000**
417 417  
418 418  Means set 5V valid time to have 1000ms. So the real 5V output will actually have 1000ms + sampling time for other sensors.** **
419 419  
420 420  
453 +
421 421  == 2.5  Downlink Payload ==
422 422  
456 +
423 423  By default, NLMS01 prints the downlink payload to console port.
424 424  
425 425  [[image:image-20220907171221-18.png]] ​
426 426  
427 -**Examples:**
428 428  
429 -* **Set TDC**
462 +(% style="color:blue" %)**Examples:**
430 430  
464 +
465 +* (% style="color:#037691" %)**Set TDC**
466 +
431 431  If the payload=0100003C, it means set the END Node's TDC to 0x00003C=60(S), while type code is 01.
432 432  
433 433  Payload:    01 00 00 1E    TDC=30S
... ... @@ -434,16 +434,23 @@
434 434  
435 435  Payload:    01 00 00 3C    TDC=60S
436 436  
437 -* **Reset**
438 438  
474 +
475 +* (% style="color:#037691" %)**Reset**
476 +
439 439  If payload = 0x04FF, it will reset the NLMS01
440 440  
441 -* **INTMOD**
442 442  
480 +
481 +* (% style="color:#037691" %)**INTMOD**
482 +
443 443  Downlink Payload: 06000003, Set AT+INTMOD=3
444 444  
485 +
486 +
445 445  == 2.6  ​LED Indicator ==
446 446  
489 +
447 447  The NLMS01 has an internal LED which is to show the status of different state.
448 448  
449 449  * When power on, NLMS01 will detect if sensor probe is connected, if probe detected, LED will blink four times. (no blinks in this step is no probe)
... ... @@ -451,18 +451,27 @@
451 451  * After NLMS01 join NB-IoT network. The LED will be ON for 3 seconds.
452 452  * For each uplink probe, LED will be on for 500ms.
453 453  
454 -== 2.7 Installation ==
455 455  
498 +
499 +
500 +
501 +== 2.7  Installation ==
502 +
503 +
456 456  NLMS01 probe has two sides. The side without words are the sense side. Please be ware when install the sensor.
457 457  
506 +
458 458  [[image:image-20220907171221-19.png]]
459 459  
460 -== 2.8 Moisture and Temperature alarm function ==
461 461  
462 -➢ AT Command:
463 463  
464 -AT+ HUMALARM =min,max
511 +== 2.8  Moisture and Temperature alarm function ==
465 465  
513 +
514 +(% style="color:blue" %)**➢ AT Command:**
515 +
516 +(% style="color:#037691" %)**AT+ HUMALARM =min,max**
517 +
466 466  ² When min=0, and max≠0, Alarm higher than max
467 467  
468 468  ² When min≠0, and max=0, Alarm lower than min
... ... @@ -469,8 +469,9 @@
469 469  
470 470  ² When min≠0 and max≠0, Alarm higher than max or lower than min
471 471  
472 -Example:
473 473  
525 +(% style="color:blue" %)**Example:**
526 +
474 474  AT+ HUMALARM =50,60 ~/~/ Alarm when moisture lower than 50.
475 475  
476 476  AT+ TEMPALARM=min,max
... ... @@ -481,41 +481,54 @@
481 481  
482 482  ² When min≠0 and max≠0, Alarm higher than max or lower than min
483 483  
484 -Example:
485 485  
538 +(% style="color:blue" %)**Example:**
539 +
486 486  AT+ TEMPALARM=20,30 ~/~/ Alarm when temperature lower than 20.
487 487  
488 488  
489 -== 2.9 Set the number of data to be uploaded and the recording time ==
490 490  
491 - AT Command:
544 +== 2.9  Set the number of data to be uploaded and the recording time ==
492 492  
493 -AT+TR=900  ~/~/The unit is seconds, and the default is to record data once every 900 seconds.( The minimum can be set to 180 seconds)
494 494  
495 -AT+NOUD=8  ~/~/The device uploads 8 sets of recorded data by default. Up to 32 sets of record data can be uploaded.
547 +(% style="color:blue" %)**➢ AT Command:**
496 496  
497 -== 2.10 Read or Clear cached data ==
549 +* (% style="color:#037691" %)**AT+TR=900**   (%%) ~/~/  The unit is seconds, and the default is to record data once every 900 seconds.( The minimum can be set to 180 seconds)
550 +* (% style="color:#037691" %)**AT+NOUD=8**  (%%)~/~/  The device uploads 8 sets of recorded data by default. Up to 32 sets of record data can be uploaded.
498 498  
499 -➢ AT Command:
500 500  
501 -AT+CDP    ~/~/ Read cached data
502 502  
503 -[[image:image-20220907171221-20.png]]
504 504  
505 505  
506 -AT+CDP=0    ~/~/ Clear cached data
556 +== 2.1Read or Clear cached data ==
507 507  
508 508  
559 +(% style="color:blue" %)**➢ AT Command:**
560 +
561 +* (% style="color:#037691" %)**AT+CDP**      (%%) ~/~/  Read cached data
562 +* (% style="color:#037691" %)**AT+CDP=0  ** (%%) ~/~/  Clear cached data
563 +
564 +
565 +
566 +[[image:image-20220907171221-20.png]]
567 +
568 +
569 +
509 509  == 2.11  ​Firmware Change Log ==
510 510  
511 -Download URL & Firmware Change log: [[https:~~/~~/www.dropbox.com/sh/1zmcakvbkf24f8x/AACmq2dZ3iRB9F1nVWeEB9Moa?dl=0>>url:https://www.dropbox.com/sh/1zmcakvbkf24f8x/AACmq2dZ3iRB9F1nVWeEB9Moa?dl=0]]
512 512  
513 -Upgrade Instruction: [[Upgrade Firmware>>path:#H5.1200BHowtoUpgradeFirmware]]
573 +Download URL & Firmware Change log: [[https:~~/~~/www.dropbox.com/sh/qdc3js2iu1vlipx/AACMHI3CvVb8g7YQMrIHY673a?dl=0>>https://www.dropbox.com/sh/qdc3js2iu1vlipx/AACMHI3CvVb8g7YQMrIHY673a?dl=0]]
514 514  
575 +Upgrade Instruction: [[Upgrade Firmware>>||anchor="H5.1200BHowtoUpgradeFirmware"]]
576 +
577 +
578 +
515 515  == 2.12  ​Battery Analysis ==
516 516  
581 +
517 517  === 2.12.1  ​Battery Type ===
518 518  
584 +
519 519  The NLMS01 battery is a combination of an 8500mAh Li/SOCI2 Battery and a Super Capacitor. The battery is none-rechargeable battery type with a low discharge rate (<2% per year). This type of battery is commonly used in IoT devices such as water meter.
520 520  
521 521  The battery is designed to last for several years depends on the actually use environment and update interval. 
... ... @@ -528,15 +528,18 @@
528 528  
529 529  [[image:image-20220907171221-21.png]] ​
530 530  
597 +
598 +
531 531  === 2.12.2  Power consumption Analyze ===
532 532  
601 +
533 533  Dragino battery powered product are all runs in Low Power mode. We have an update battery calculator which base on the measurement of the real device. User can use this calculator to check the battery life and calculate the battery life if want to use different transmit interval.
534 534  
535 535  Instruction to use as below:
536 536  
537 -**Step 1:  **Downlink the up-to-date DRAGINO_Battery_Life_Prediction_Table.xlsx from: [[https:~~/~~/www.dragino.com/downloads/index.php?dir=LoRa_End_Node/Battery_Analyze/>>url:https://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/Battery_Analyze/]]
606 +(% style="color:blue" %)**Step 1:  **(%%)Downlink the up-to-date DRAGINO_Battery_Life_Prediction_Table.xlsx from: [[https:~~/~~/www.dragino.com/downloads/index.php?dir=LoRa_End_Node/Battery_Analyze/>>url:https://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/Battery_Analyze/]]
538 538  
539 -**Step 2: ** Open it and choose
608 +(% style="color:blue" %)**Step 2: **(%%) Open it and choose
540 540  
541 541  * Product Model
542 542  * Uplink Interval
... ... @@ -546,26 +546,39 @@
546 546  
547 547  [[image:image-20220907171221-22.jpeg]] ​
548 548  
618 +
549 549  === 2.12.3  ​Battery Note ===
550 550  
621 +
551 551  The Li-SICO battery is designed for small current / long period application. It is not good to use a high current, short period transmit method. The recommended minimum period for use of this battery is 5 minutes. If you use a shorter period time to transmit LoRa, then the battery life may be decreased.
552 552  
624 +
625 +
553 553  === 2.12.4  Replace the battery ===
554 554  
628 +
555 555  The default battery pack of NLMS01 includes a ER26500 plus super capacitor. If user can't find this pack locally, they can find ER26500 or equivalence without the SPC1520 capacitor, which will also work in most case. The SPC can enlarge the battery life for high frequency use (update period below 5 minutes).
556 556  
631 +
632 +
557 557  = 3. ​ Access NB-IoT Module =
558 558  
635 +
559 559  Users can directly access the AT command set of the NB-IoT module.
560 560  
561 561  The AT Command set can refer the BC35-G NB-IoT Module AT Command: [[https:~~/~~/www.dragino.com/downloads/index.php?dir=datasheet/other_vendors/BC35-G/>>url:https://www.dragino.com/downloads/index.php?dir=datasheet/other_vendors/BC35-G/]] 
562 562  
640 +
563 563  [[image:image-20220907171221-23.png]] ​
564 564  
643 +
644 +
565 565  = 4.  Using the AT Commands =
566 566  
647 +
567 567  == 4.1  Access AT Commands ==
568 568  
650 +
569 569  See this link for detail:  [[https:~~/~~/www.dropbox.com/sh/351dwor6joz8nwh/AADn1BQaAAxLF_QMyU8NkW47a?dl=0>>url:https://www.dropbox.com/sh/351dwor6joz8nwh/AADn1BQaAAxLF_QMyU8NkW47a?dl=0]]
570 570  
571 571  AT+<CMD>?  : Help on <CMD>
... ... @@ -576,8 +576,9 @@
576 576  
577 577  AT+<CMD>=?  : Get the value
578 578  
579 -**General Commands**      
580 580  
662 +(% style="color:#037691" %)**General Commands**      
663 +
581 581  AT  : Attention       
582 582  
583 583  AT?  : Short Help     
... ... @@ -619,16 +619,18 @@
619 619  AT+HUMALARM     : Get or Set alarm of PH
620 620  
621 621  
622 -**COAP Management**      
705 +(% style="color:#037691" %)**COAP Management**      
623 623  
624 624  AT+URI            : Resource parameters
625 625  
626 -**UDP Management**
627 627  
710 +(% style="color:#037691" %)**UDP Management**
711 +
628 628  AT+CFM          : Upload confirmation mode (only valid for UDP)
629 629  
630 -**MQTT Management**
631 631  
715 +(% style="color:#037691" %)**MQTT Management**
716 +
632 632  AT+CLIENT               : Get or Set MQTT client
633 633  
634 634  AT+UNAME  : Get or Set MQTT Username
... ... @@ -639,43 +639,62 @@
639 639  
640 640  AT+SUBTOPIC  : Get or Set MQTT subscription topic
641 641  
642 -**Information**          
643 643  
728 +(% style="color:#037691" %)**Information**          
729 +
644 644  AT+FDR  : Factory Data Reset
645 645  
646 646  AT+PWORD  : Serial Access Password
647 647  
734 +
735 +
648 648  = ​5.  FAQ =
649 649  
738 +
650 650  == 5.1 ​ How to Upgrade Firmware ==
651 651  
741 +
652 652  User can upgrade the firmware for 1) bug fix, 2) new feature release.
653 653  
654 654  Please see this link for how to upgrade:  [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/Firmware%20Upgrade%20Instruction%20for%20STM32%20base%20products/#H2.HardwareUpgradeMethodSupportList>>url:http://wiki.dragino.com/xwiki/bin/view/Main/Firmware%20Upgrade%20Instruction%20for%20STM32%20base%20products/#H2.HardwareUpgradeMethodSupportList]]
655 655  
656 -**Notice, **NLMS01 **and **NLMS01 **share the same mother board. They use the same connection and method to update.**
657 657  
747 +(% style="color:red" %)**Notice, NLMS01 and LLMS01 share the same mother board. They use the same connection and method to update.**
748 +
749 +
750 +
658 658  = 6.  Trouble Shooting =
659 659  
753 +
660 660  == 6.1  ​Connection problem when uploading firmware ==
661 661  
756 +
662 662  **Please see: **[[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/Firmware%20Upgrade%20Instruction%20for%20STM32%20base%20products/#H3.3Troubleshooting>>url:http://wiki.dragino.com/xwiki/bin/view/Main/Firmware%20Upgrade%20Instruction%20for%20STM32%20base%20products/#H3.3Troubleshooting]]
663 663  
759 +
760 +
664 664  == 6.2  AT Command input doesn't work ==
665 665  
666 -In the case if user can see the console output but can't type input to the device. Please check if you already include the **ENTER** while sending out the command. Some serial tool doesn't send **ENTER** while press the send key, user need to add ENTER in their string.
667 667  
764 +In the case if user can see the console output but can't type input to the device. Please check if you already include the (% style="color:green" %)**ENTER**(%%) while sending out the command. Some serial tool doesn't send (% style="color:green" %)**ENTER**(%%) while press the send key, user need to add ENTER in their string.
765 +
766 +
767 +
668 668  = 7. ​ Order Info =
669 669  
770 +
670 670  Part Number**:** NLMS01
671 671  
773 +
774 +
672 672  = 8.  Packing Info =
673 673  
674 -**Package Includes**:
675 675  
778 +(% style="color:#037691" %)**Package Includes:**
779 +
676 676  * NLMS01 NB-IoT Leaf Moisture Sensor x 1
677 677  
678 -**Dimension and weight**:
782 +(% style="color:#037691" %)**Dimension and weight**:
679 679  
680 680  * Device Size: cm
681 681  * Device Weight: g
... ... @@ -682,8 +682,12 @@
682 682  * Package Size / pcs : cm
683 683  * Weight / pcs : g
684 684  
789 +
790 +
791 +
685 685  = 9.  Support =
686 686  
794 +
687 687  * Support is provided Monday to Friday, from 09:00 to 18:00 GMT+8. Due to different timezones we cannot offer live support. However, your questions will be answered as soon as possible in the before-mentioned schedule.
688 688  * Provide as much information as possible regarding your enquiry (product models, accurately describe your problem and steps to replicate it etc) and send a mail to [[support@dragino.com>>url:http://../../../../../../D:%5C%E5%B8%82%E5%9C%BA%E8%B5%84%E6%96%99%5C%E8%AF%B4%E6%98%8E%E4%B9%A6%5CLoRa%5CLT%E7%B3%BB%E5%88%97%5Csupport@dragino.com]]
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