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Last modified by Mengting Qiu on 2025/08/06 17:02
From version 173.7
edited by Xiaoling
on 2022/06/15 10:22
Change comment: There is no comment for this version
To version 175.12
edited by Xiaoling
on 2022/06/15 10:59
Change comment: There is no comment for this version

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... ... @@ -405,7 +405,7 @@
405 405  While using TTN network, you can add the payload format to decode the payload.
406 406  
407 407  
408 -[[image:1654850829385-439.png]]
408 +[[image:1655261164557-670.png]]
409 409  
410 410  The payload decoder function for TTN V3 is here:
411 411  
... ... @@ -493,8 +493,6 @@
493 493  * Solid ON for 5 seconds once device successful Join the network.
494 494  * Blink once when device transmit a packet.
495 495  
496 -
497 -
498 498  == 2.7  ​Firmware Change Log ==
499 499  
500 500  
... ... @@ -512,41 +512,40 @@
512 512  
513 513  
514 514  
515 -== 2.9  Mechanical ==
513 +== 2.8  Battery Analysis ==
516 516  
517 517  
518 -[[image:image-20220610172003-1.png]]
519 519  
520 520  
521 -[[image:image-20220610172003-2.png]]
518 +=== 2.8.1  Battery Type ===
522 522  
520 +The LDDS20 battery is a combination of a 8500mAh Li/SOCI2 Battery and a Super Capacitor. The battery is non-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.
523 523  
524 524  
525 -== 2.10  Battery Analysis ==
526 -
527 -=== 2.10.1  Battery Type ===
528 -
529 -The LDDS75 battery is a combination of a 4000mAh or 8500mAh Li/SOCI2 Battery and a Super Capacitor. The battery is non-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.
530 -
531 -
532 532  The battery related documents as below:
533 533  
534 534  * (((
535 -[[Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/&file=LSN50-Battery-Dimension.pdf]],
526 +[[Battery Dimension>>https://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]],
536 536  )))
537 537  * (((
538 -[[Lithium-Thionyl Chloride Battery  datasheet>>url:https://www.dragino.com/downloads/downloads/datasheet/Battery/ER26500/ER26500_Datasheet-EN.pdf]],
529 +[[Lithium-Thionyl Chloride Battery  datasheet>>https://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]],
539 539  )))
540 540  * (((
541 -[[Lithium-ion Battery-Capacitor datasheet>>url:http://www.dragino.com/downloads/downloads/datasheet/Battery/SPC_1520_datasheet.jpg]], [[Tech Spec>>url:http://www.dragino.com/downloads/downloads/datasheet/Battery/SPC1520%20Technical%20Specification20171123.pdf]]
532 +[[Lithium-ion Battery-Capacitor datasheet>>https://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]]
542 542  )))
543 543  
544 - [[image:image-20220610172400-3.png]]
535 + [[image:image-20220615102527-16.png]]
545 545  
546 546  
547 547  
548 -=== 2.10.2  Replace the battery ===
539 +== 2.8.2  Battery Note ==
549 549  
541 +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 uplink data, then the battery life may be decreased.
542 +
543 +
544 +
545 +=== 2.8.3  Replace the battery ===
546 +
550 550  (((
551 551  You can change the battery in the LDDS75.The type of battery is not limited as long as the output is between 3v to 3.6v. On the main board, there is a diode (D1) between the battery and the main circuit. If you need to use a battery with less than 3.3v, please remove the D1 and shortcut the two pads of it so there won't be voltage drop between battery and main board.
552 552  )))
... ... @@ -561,138 +561,152 @@
561 561  
562 562  
563 563  
564 -= 3.  Configure LDDS75 via AT Command or LoRaWAN Downlink =
561 +== 2.8.4  Battery Life Analyze ==
565 565  
566 -(((
567 -(((
568 -Use can configure LDDS75 via AT Command or LoRaWAN Downlink.
569 -)))
570 -)))
563 +Dragino battery powered products are all run in Low Power mode. User can check the guideline from this link to calculate the estimate battery life:
571 571  
572 -* (((
573 -(((
574 -AT Command Connection: See [[FAQ>>||anchor="H4.A0FAQ"]].
575 -)))
576 -)))
577 -* (((
578 -(((
579 -LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
580 -)))
581 -)))
565 +[[https:~~/~~/www.dragino.com/downloads/downloads/LoRa_End_Node/Battery_Analyze/DRAGINO_Battery_Life_Guide.pdf>>url:https://www.dragino.com/downloads/downloads/LoRa_End_Node/Battery_Analyze/DRAGINO_Battery_Life_Guide.pdf]]
582 582  
583 -(((
584 -(((
585 -
586 -)))
587 587  
588 -(((
589 -There are two kinds of commands to configure LDDS75, they are:
590 -)))
591 -)))
592 592  
593 -* (((
594 -(((
595 -(% style="color:#4f81bd" %)** General Commands**.
596 -)))
597 -)))
569 += 3.  Using the AT Commands =
598 598  
599 599  (((
600 600  (((
601 -These commands are to configure:
573 +
602 602  )))
603 603  )))
604 604  
605 -* (((
606 -(((
607 -General system settings like: uplink interval.
608 -)))
609 -)))
610 -* (((
611 -(((
612 -LoRaWAN protocol & radio related command.
613 -)))
614 -)))
577 +== 3.1  Access AT Commands ==
615 615  
616 -(((
617 -(((
618 -They are same for all Dragino Device which support DLWS-005 LoRaWAN Stack. These commands can be found on the wiki: [[End Device AT Commands and Downlink Command>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]
619 -)))
620 -)))
579 +LDDS20 supports AT Command set in the stock firmware. You can use a USB to TTL adapter to connect to LDDS20 for using AT command, as below.
621 621  
622 -(((
623 -(((
624 -
625 -)))
626 -)))
627 627  
628 -* (((
629 -(((
630 -(% style="color:#4f81bd" %)** Commands special design for LDDS75**
631 -)))
632 -)))
582 +[[image:image-20220610172924-4.png||height="483" width="988"]]
633 633  
584 +
585 +Or if you have below board, use below connection:
586 +
587 +
588 +[[image:image-20220610172924-5.png]]
589 +
590 +
634 634  (((
635 -(((
636 -These commands only valid for LDDS75, as below:
592 +In the PC, you need to set the serial baud rate to (% style="color:green" %)**9600**(%%) to access the serial console for LDDS20. LDDS20 will output system info once power on as below:
637 637  )))
638 -)))
639 639  
640 640  
596 + [[image:image-20220610172924-6.png||height="601" width="860"]]
641 641  
642 -== 3.1  Access AT Commands ==
598 +Below are the available commands, a more detailed AT Command manual can be found at [[AT Command Manual>>https://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSE01/]].
643 643  
644 -LDDS75 supports AT Command set in the stock firmware. You can use a USB to TTL adapter to connect to LDDS75 for using AT command, as below.
645 645  
646 -[[image:image-20220610172924-4.png||height="483" width="988"]]
601 +AT+<CMD>?  :  Help on <CMD>
647 647  
603 +AT+<CMD>  :  Run <CMD>
648 648  
649 -Or if you have below board, use below connection:
605 +AT+<CMD>=<value>  :  Set the value
650 650  
607 +AT+<CMD>=?  :  Get the value
651 651  
652 -[[image:image-20220610172924-5.png]]
653 653  
610 +(% style="color:#037691" %)** General Commands :**     
654 654  
655 -(((
656 -In the PC, you need to set the serial baud rate to (% style="color:green" %)**9600**(%%) to access the serial console for LDDS75. LDDS75 will output system info once power on as below:
657 -)))
612 +AT  :  Attention       
658 658  
614 +AT?  :  Short Help     
659 659  
660 - [[image:image-20220610172924-6.png||height="601" width="860"]]
616 +ATZ :  MCU Reset    
661 661  
618 +AT+TDC :  Application Data Transmission Interval 
662 662  
663 663  
664 -== 3.2  Set Transmit Interval Time ==
621 +(% style="color:#037691" %)** Keys, IDs and EUIs management :**
665 665  
666 -Feature: Change LoRaWAN End Node Transmit Interval.
623 +AT+APPEUI  :  Application EUI      
667 667  
668 -(% style="color:#037691" %)**AT Command: AT+TDC**
625 +AT+APPKEY  :  Application Key     
669 669  
670 -[[image:image-20220610173409-7.png]]
627 +AT+APPSKEY  :  Application Session Key
671 671  
629 +AT+DADDR :  Device Address     
672 672  
673 -(((
674 -(% style="color:#037691" %)**Downlink Command: 0x01**
675 -)))
631 +AT+DEUI :  Device EUI     
676 676  
677 -(((
678 -(((
679 -Format: Command Code (0x01) followed by 3 bytes time value.
633 +AT+NWKID  :  Network ID (You can enter this command change only after successful network connection) 
680 680  
681 -(((
682 -If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
683 -)))
635 +AT+NWKSKEY  : Network Session Key Joining and sending date on LoRa network  
684 684  
685 -* Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
686 -* Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
687 -)))
688 -)))
637 +AT+CFM :  Confirm Mode       
689 689  
639 +AT+CFS :  Confirm Status       
690 690  
641 +AT+JOIN  :  Join LoRa? Network       
691 691  
643 +AT+NJM  :  LoRa? Network Join Mode    
692 692  
645 +AT+NJS  :  LoRa? Network Join Status    
693 693  
694 -== 3.3  Set Interrupt Mode ==
647 +AT+RECV  :  Print Last Received Data in Raw Format
695 695  
649 +AT+RECVB :  Print Last Received Data in Binary Format      
650 +
651 +AT+SEND  :  Send Text Data      
652 +
653 +AT+SENB  :  Send Hexadecimal Data
654 +
655 +
656 +(% style="color:#037691" %)** LoRa Network Management :**
657 +
658 +AT+ADR  :  Adaptive Rate
659 +
660 +AT+CLASS  :  LoRa Class(Currently only support class A
661 +
662 +AT+DCS  :  Duty Cycle Setting 
663 +
664 +AT+DR  :  Data Rate (Can Only be Modified after ADR=0)     
665 +
666 +AT+FCD  :  Frame Counter Downlink       
667 +
668 +AT+FCU  :  Frame Counter Uplink   
669 +
670 +AT+JN1DL  :  Join Accept Delay1
671 +
672 +AT+JN2DL  :  Join Accept Delay2
673 +
674 +AT+PNM  :  Public Network Mode   
675 +
676 +AT+RX1DL  :  Receive Delay1      
677 +
678 +AT+RX2DL  :  Receive Delay2      
679 +
680 +AT+RX2DR  :  Rx2 Window Data Rate 
681 +
682 +AT+RX2FQ  :  Rx2 Window Frequency
683 +
684 +AT+TXP  :  Transmit Power
685 +
686 +
687 +(% style="color:#037691" %)** Information :**
688 +
689 +AT+RSSI  :  RSSI of the Last Received Packet   
690 +
691 +AT+SNR  :  SNR of the Last Received Packet   
692 +
693 +AT+VER  :  Image Version and Frequency Band       
694 +
695 +AT+FDR  :  Factory Data Reset
696 +
697 +AT+PORT  :  Application Port    
698 +
699 +AT+CHS  :  Get or Set Frequency (Unit: Hz) for Single Channel Mode
700 +
701 + AT+CHE  :  Get or Set eight channels mode, Only for US915, AU915, CN470
702 +
703 +
704 +
705 +== 3.2  Set Interrupt Mode ==
706 +
696 696  Feature, Set Interrupt mode for GPIO_EXIT.
697 697  
698 698  (% style="color:#037691" %)**Downlink Command: AT+INTMOD**
... ... @@ -711,27 +711,22 @@
711 711  * Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
712 712  * Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
713 713  
725 +
714 714  = 4.  FAQ =
715 715  
716 -== 4.1  What is the frequency plan for LDDS75? ==
728 +== 4.1  What is the frequency plan for LDDS20? ==
717 717  
718 -LDDS75 use the same frequency as other Dragino products. User can see the detail from this link:  [[Introduction>>doc:Main.End Device Frequency Band.WebHome||anchor="H1.Introduction"]]
730 +LDDS20 use the same frequency as other Dragino products. User can see the detail from this link:  [[Introduction>>doc:Main.End Device Frequency Band.WebHome||anchor="H1.Introduction"]]
719 719  
720 720  
721 721  
722 722  == 4.2  How to change the LoRa Frequency Bands/Region ==
723 723  
724 -You can follow the instructions for [[how to upgrade image>>||anchor="H2.8A0200BFirmwareChangeLog"]].
736 +You can follow the instructions for [[how to upgrade image>>||anchor="H2.7A0200BFirmwareChangeLog"]].
725 725  When downloading the images, choose the required image file for download. ​
726 726  
727 727  
728 728  
729 -== 4.3  Can I use LDDS75 in condensation environment? ==
730 -
731 -LDDS75 is not suitable to be used in condensation environment. Condensation on the LDDS75 probe will affect the reading and always got 0.
732 -
733 -
734 -
735 735  = 5.  Trouble Shooting =
736 736  
737 737  == 5.1  Why I can’t join TTN V3 in US915 / AU915 bands? ==
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