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Last modified by Mengting Qiu on 2025/08/06 17:02
From version 175.12
edited by Xiaoling
on 2022/06/15 10:59
Change comment: There is no comment for this version
To version 173.4
edited by Xiaoling
on 2022/06/15 10:13
Change comment: There is no comment for this version

Summary

Details

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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:1655261164557-670.png]]
408 +[[image:1654850829385-439.png]]
409 409  
410 410  The payload decoder function for TTN V3 is here:
411 411  
... ... @@ -483,227 +483,682 @@
483 483  
484 484  
485 485  
486 -== 2.6  LED Indicator ==
486 +== 2.6  Frequency Plans ==
487 487  
488 -The LDDS20 has an internal LED which is to show the status of different state.
488 +(((
489 +The LDDS75 uses OTAA mode and below frequency plans by default. If user want to use it with different frequency plan, please refer the AT command sets.
490 +)))
489 489  
490 490  
491 -* Blink once when device power on.
492 -* The device detects the sensor and flashes 5 times.
493 -* Solid ON for 5 seconds once device successful Join the network.
494 -* Blink once when device transmit a packet.
495 495  
496 -== 2.7  ​Firmware Change Log ==
494 +=== 2.6.1  EU863-870 (EU868) ===
497 497  
496 +(((
497 +(% style="color:blue" %)**Uplink:**
498 +)))
498 498  
499 499  (((
500 -**Firmware download link:  **[[http:~~/~~/www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSE01/Firmware/>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSE01/Firmware/]]
501 +868.1 - SF7BW125 to SF12BW125
501 501  )))
502 502  
503 503  (((
505 +868.3 - SF7BW125 to SF12BW125 and SF7BW250
506 +)))
507 +
508 +(((
509 +868.5 - SF7BW125 to SF12BW125
510 +)))
511 +
512 +(((
513 +867.1 - SF7BW125 to SF12BW125
514 +)))
515 +
516 +(((
517 +867.3 - SF7BW125 to SF12BW125
518 +)))
519 +
520 +(((
521 +867.5 - SF7BW125 to SF12BW125
522 +)))
523 +
524 +(((
525 +867.7 - SF7BW125 to SF12BW125
526 +)))
527 +
528 +(((
529 +867.9 - SF7BW125 to SF12BW125
530 +)))
531 +
532 +(((
533 +868.8 - FSK
534 +)))
535 +
536 +(((
504 504  
505 505  )))
506 506  
507 507  (((
508 -**Firmware Upgrade Method:  [[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]**
541 +(% style="color:blue" %)**Downlink:**
509 509  )))
510 510  
544 +(((
545 +Uplink channels 1-9 (RX1)
546 +)))
511 511  
548 +(((
549 +869.525 - SF9BW125 (RX2 downlink only)
550 +)))
512 512  
513 -== 2.8  Battery Analysis ==
514 514  
515 515  
554 +=== 2.6.2  US902-928(US915) ===
516 516  
556 +(((
557 +Used in USA, Canada and South America. Default use CHE=2
517 517  
518 -=== 2.8.1  Battery Type ===
559 +(% style="color:blue" %)**Uplink:**
519 519  
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.
561 +903.9 - SF7BW125 to SF10BW125
521 521  
563 +904.1 - SF7BW125 to SF10BW125
522 522  
523 -The battery related documents as below:
565 +904.3 - SF7BW125 to SF10BW125
524 524  
525 -* (((
526 -[[Battery Dimension>>https://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]],
567 +904.5 - SF7BW125 to SF10BW125
568 +
569 +904.7 - SF7BW125 to SF10BW125
570 +
571 +904.9 - SF7BW125 to SF10BW125
572 +
573 +905.1 - SF7BW125 to SF10BW125
574 +
575 +905.3 - SF7BW125 to SF10BW125
576 +
577 +
578 +(% style="color:blue" %)**Downlink:**
579 +
580 +923.3 - SF7BW500 to SF12BW500
581 +
582 +923.9 - SF7BW500 to SF12BW500
583 +
584 +924.5 - SF7BW500 to SF12BW500
585 +
586 +925.1 - SF7BW500 to SF12BW500
587 +
588 +925.7 - SF7BW500 to SF12BW500
589 +
590 +926.3 - SF7BW500 to SF12BW500
591 +
592 +926.9 - SF7BW500 to SF12BW500
593 +
594 +927.5 - SF7BW500 to SF12BW500
595 +
596 +923.3 - SF12BW500(RX2 downlink only)
597 +
598 +
599 +
527 527  )))
528 -* (((
529 -[[Lithium-Thionyl Chloride Battery  datasheet>>https://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]],
601 +
602 +=== 2.6.3  CN470-510 (CN470) ===
603 +
604 +(((
605 +Used in China, Default use CHE=1
530 530  )))
531 -* (((
532 -[[Lithium-ion Battery-Capacitor datasheet>>https://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]]
607 +
608 +(((
609 +(% style="color:blue" %)**Uplink:**
533 533  )))
534 534  
535 - [[image:image-20220615102527-16.png]]
612 +(((
613 +486.3 - SF7BW125 to SF12BW125
614 +)))
536 536  
616 +(((
617 +486.5 - SF7BW125 to SF12BW125
618 +)))
537 537  
620 +(((
621 +486.7 - SF7BW125 to SF12BW125
622 +)))
538 538  
539 -== 2.8.2  Battery Note ==
624 +(((
625 +486.9 - SF7BW125 to SF12BW125
626 +)))
540 540  
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.
628 +(((
629 +487.1 - SF7BW125 to SF12BW125
630 +)))
542 542  
632 +(((
633 +487.3 - SF7BW125 to SF12BW125
634 +)))
543 543  
636 +(((
637 +487.5 - SF7BW125 to SF12BW125
638 +)))
544 544  
545 -=== 2.8.3  Replace the battery ===
640 +(((
641 +487.7 - SF7BW125 to SF12BW125
642 +)))
546 546  
547 547  (((
548 -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.
645 +
549 549  )))
550 550  
551 551  (((
649 +(% style="color:blue" %)**Downlink:**
650 +)))
651 +
652 +(((
653 +506.7 - SF7BW125 to SF12BW125
654 +)))
655 +
656 +(((
657 +506.9 - SF7BW125 to SF12BW125
658 +)))
659 +
660 +(((
661 +507.1 - SF7BW125 to SF12BW125
662 +)))
663 +
664 +(((
665 +507.3 - SF7BW125 to SF12BW125
666 +)))
667 +
668 +(((
669 +507.5 - SF7BW125 to SF12BW125
670 +)))
671 +
672 +(((
673 +507.7 - SF7BW125 to SF12BW125
674 +)))
675 +
676 +(((
677 +507.9 - SF7BW125 to SF12BW125
678 +)))
679 +
680 +(((
681 +508.1 - SF7BW125 to SF12BW125
682 +)))
683 +
684 +(((
685 +505.3 - SF12BW125 (RX2 downlink only)
686 +)))
687 +
688 +
689 +
690 +=== 2.6.4  AU915-928(AU915) ===
691 +
692 +(((
693 +Default use CHE=2
694 +
695 +(% style="color:blue" %)**Uplink:**
696 +
697 +916.8 - SF7BW125 to SF12BW125
698 +
699 +917.0 - SF7BW125 to SF12BW125
700 +
701 +917.2 - SF7BW125 to SF12BW125
702 +
703 +917.4 - SF7BW125 to SF12BW125
704 +
705 +917.6 - SF7BW125 to SF12BW125
706 +
707 +917.8 - SF7BW125 to SF12BW125
708 +
709 +918.0 - SF7BW125 to SF12BW125
710 +
711 +918.2 - SF7BW125 to SF12BW125
712 +
713 +
714 +(% style="color:blue" %)**Downlink:**
715 +
716 +923.3 - SF7BW500 to SF12BW500
717 +
718 +923.9 - SF7BW500 to SF12BW500
719 +
720 +924.5 - SF7BW500 to SF12BW500
721 +
722 +925.1 - SF7BW500 to SF12BW500
723 +
724 +925.7 - SF7BW500 to SF12BW500
725 +
726 +926.3 - SF7BW500 to SF12BW500
727 +
728 +926.9 - SF7BW500 to SF12BW500
729 +
730 +927.5 - SF7BW500 to SF12BW500
731 +
732 +923.3 - SF12BW500(RX2 downlink only)
733 +
734 +
552 552  
553 553  )))
554 554  
738 +=== 2.6.5  AS920-923 & AS923-925 (AS923) ===
739 +
555 555  (((
556 -The default battery pack of LDDS75 includes a ER18505 plus super capacitor. If user can't find this pack locally, they can find ER18505 or equivalence, which will also work in most case. The SPC can enlarge the battery life for high frequency use (update period below 5 minutes)
741 +(% style="color:blue" %)**Default Uplink channel:**
557 557  )))
558 558  
744 +(((
745 +923.2 - SF7BW125 to SF10BW125
746 +)))
559 559  
748 +(((
749 +923.4 - SF7BW125 to SF10BW125
750 +)))
560 560  
561 -== 2.8.4  Battery Life Analyze ==
752 +(((
753 +
754 +)))
562 562  
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:
756 +(((
757 +(% style="color:blue" %)**Additional Uplink Channel**:
758 +)))
564 564  
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]]
760 +(((
761 +(OTAA mode, channel added by JoinAccept message)
762 +)))
566 566  
764 +(((
765 +
766 +)))
567 567  
768 +(((
769 +(% style="color:blue" %)**AS920~~AS923 for Japan, Malaysia, Singapore**:
770 +)))
568 568  
569 -= 3.  Using the AT Commands =
772 +(((
773 +922.2 - SF7BW125 to SF10BW125
774 +)))
570 570  
571 571  (((
777 +922.4 - SF7BW125 to SF10BW125
778 +)))
779 +
572 572  (((
781 +922.6 - SF7BW125 to SF10BW125
782 +)))
783 +
784 +(((
785 +922.8 - SF7BW125 to SF10BW125
786 +)))
787 +
788 +(((
789 +923.0 - SF7BW125 to SF10BW125
790 +)))
791 +
792 +(((
793 +922.0 - SF7BW125 to SF10BW125
794 +)))
795 +
796 +(((
573 573  
574 574  )))
799 +
800 +(((
801 +(% style="color:blue" %)**AS923 ~~ AS925 for Brunei, Cambodia, Hong Kong, Indonesia, Laos, Taiwan, Thailand, Vietnam**:
575 575  )))
576 576  
577 -== 3.1  Access AT Commands ==
804 +(((
805 +923.6 - SF7BW125 to SF10BW125
806 +)))
578 578  
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.
808 +(((
809 +923.8 - SF7BW125 to SF10BW125
810 +)))
580 580  
812 +(((
813 +924.0 - SF7BW125 to SF10BW125
814 +)))
581 581  
582 -[[image:image-20220610172924-4.png||height="483" width="988"]]
816 +(((
817 +924.2 - SF7BW125 to SF10BW125
818 +)))
583 583  
820 +(((
821 +924.4 - SF7BW125 to SF10BW125
822 +)))
584 584  
585 -Or if you have below board, use below connection:
824 +(((
825 +924.6 - SF7BW125 to SF10BW125
826 +)))
586 586  
828 +(((
829 +
830 +)))
587 587  
588 -[[image:image-20220610172924-5.png]]
832 +(((
833 +(% style="color:blue" %)**Downlink:**
834 +)))
589 589  
836 +(((
837 +Uplink channels 1-8 (RX1)
838 +)))
590 590  
591 591  (((
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:
841 +923.2 - SF10BW125 (RX2)
593 593  )))
594 594  
595 595  
596 - [[image:image-20220610172924-6.png||height="601" width="860"]]
597 597  
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/]].
846 +=== 2.6.6  KR920-923 (KR920) ===
599 599  
848 +(((
849 +(% style="color:blue" %)**Default channel:**
850 +)))
600 600  
601 -AT+<CMD>?  :  Help on <CMD>
852 +(((
853 +922.1 - SF7BW125 to SF12BW125
854 +)))
602 602  
603 -AT+<CMD>  :  Run <CMD>
856 +(((
857 +922.3 - SF7BW125 to SF12BW125
858 +)))
604 604  
605 -AT+<CMD>=<value>  :  Set the value
860 +(((
861 +922.5 - SF7BW125 to SF12BW125
862 +)))
606 606  
607 -AT+<CMD>=?  :  Get the value
864 +(((
865 +
866 +)))
608 608  
868 +(((
869 +(% style="color:blue" %)**Uplink: (OTAA mode, channel added by JoinAccept message)**
870 +)))
609 609  
610 -(% style="color:#037691" %)** General Commands :**     
872 +(((
873 +922.1 - SF7BW125 to SF12BW125
874 +)))
611 611  
612 -AT  :  Attention       
876 +(((
877 +922.3 - SF7BW125 to SF12BW125
878 +)))
613 613  
614 -AT?  :  Short Help     
880 +(((
881 +922.5 - SF7BW125 to SF12BW125
882 +)))
615 615  
616 -ATZ :  MCU Reset    
884 +(((
885 +922.7 - SF7BW125 to SF12BW125
886 +)))
617 617  
618 -AT+TDC :  Application Data Transmission Interval 
888 +(((
889 +922.9 - SF7BW125 to SF12BW125
890 +)))
619 619  
892 +(((
893 +923.1 - SF7BW125 to SF12BW125
894 +)))
620 620  
621 -(% style="color:#037691" %)** Keys, IDs and EUIs management :**
896 +(((
897 +923.3 - SF7BW125 to SF12BW125
898 +)))
622 622  
623 -AT+APPEUI  :  Application EUI      
900 +(((
901 +
902 +)))
624 624  
625 -AT+APPKEY  :  Application Key     
904 +(((
905 +(% style="color:blue" %)**Downlink:**
906 +)))
626 626  
627 -AT+APPSKEY  :  Application Session Key
908 +(((
909 +Uplink channels 1-7(RX1)
910 +)))
628 628  
629 -AT+DADDR :  Device Address     
912 +(((
913 +921.9 - SF12BW125 (RX2 downlink only; SF12BW125 might be changed to SF9BW125)
914 +)))
630 630  
631 -AT+DEUI :  Device EUI     
632 632  
633 -AT+NWKID  :  Network ID (You can enter this command change only after successful network connection) 
634 634  
635 -AT+NWKSKEY  : Network Session Key Joining and sending date on LoRa network  
918 +=== 2.6.7  IN865-867 (IN865) ===
636 636  
637 -AT+CFM :  Confirm Mode       
920 +(((
921 +(% style="color:blue" %)**Uplink:**
922 +)))
638 638  
639 -AT+CFS :  Confirm Status       
924 +(((
925 +865.0625 - SF7BW125 to SF12BW125
926 +)))
640 640  
641 -AT+JOIN  :  Join LoRa? Network       
928 +(((
929 +865.4025 - SF7BW125 to SF12BW125
930 +)))
642 642  
643 -AT+NJM  :  LoRa? Network Join Mode    
932 +(((
933 +865.9850 - SF7BW125 to SF12BW125
934 +)))
644 644  
645 -AT+NJS  :  LoRa? Network Join Status    
936 +(((
937 +
938 +)))
646 646  
647 -AT+RECV  :  Print Last Received Data in Raw Format
940 +(((
941 +(% style="color:blue" %)**Downlink:**
942 +)))
648 648  
649 -AT+RECVB :  Print Last Received Data in Binary Format      
944 +(((
945 +Uplink channels 1-3 (RX1)
946 +)))
650 650  
651 -AT+SEND  :  Send Text Data      
948 +(((
949 +866.550 - SF10BW125 (RX2)
950 +)))
652 652  
653 -AT+SENB  :  Send Hexadecimal Data
654 654  
655 655  
656 -(% style="color:#037691" %)** LoRa Network Management :**
954 +== 2.7  LED Indicator ==
657 657  
658 -AT+ADR  :  Adaptive Rate
956 +The LDDS75 has an internal LED which is to show the status of different state.
659 659  
660 -AT+CLASS  :  LoRa Class(Currently only support class A
661 661  
662 -AT+DCS  :  Duty Cycle Setting 
959 +* Blink once when device power on.
960 +* The device detects the sensor and flashes 5 times.
961 +* Solid ON for 5 seconds once device successful Join the network.
962 +* Blink once when device transmit a packet.
663 663  
664 -AT+DR  :  Data Rate (Can Only be Modified after ADR=0)     
964 +== 2.8  ​Firmware Change Log ==
665 665  
666 -AT+FCD  :  Frame Counter Downlink       
667 667  
668 -AT+FCU  :  Frame Counter Uplink   
967 +(((
968 +**Firmware download link: **[[http:~~/~~/www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSE01/Firmware/>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSE01/Firmware/]]
969 +)))
669 669  
670 -AT+JN1DL  :  Join Accept Delay1
971 +(((
972 +
973 +)))
671 671  
672 -AT+JN2DL  :  Join Accept Delay2
975 +(((
976 +**Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
977 +)))
673 673  
674 -AT+PNM  :  Public Network Mode   
675 675  
676 -AT+RX1DL  :  Receive Delay1      
677 677  
678 -AT+RX2DL  :  Receive Delay2      
981 +== 2.9  Mechanical ==
679 679  
680 -AT+RX2DR  :  Rx2 Window Data Rate 
681 681  
682 -AT+RX2FQ  :  Rx2 Window Frequency
984 +[[image:image-20220610172003-1.png]]
683 683  
684 -AT+TXP  :  Transmit Power
685 685  
987 +[[image:image-20220610172003-2.png]]
686 686  
687 -(% style="color:#037691" %)** Information :**
688 688  
689 -AT+RSSI  :  RSSI of the Last Received Packet   
690 690  
691 -AT+SNR  :  SNR of the Last Received Packet   
991 +== 2.10  Battery Analysis ==
692 692  
693 -AT+VER  :  Image Version and Frequency Band       
993 +=== 2.10.1  Battery Type ===
694 694  
695 -AT+FDR  :  Factory Data Reset
995 +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.
696 696  
697 -AT+PORT  :  Application Port    
698 698  
699 -AT+CHS  :  Get or Set Frequency (Unit: Hz) for Single Channel Mode
998 +The battery related documents as below:
700 700  
701 - AT+CHE  :  Get or Set eight channels mode, Only for US915, AU915, CN470
1000 +* (((
1001 +[[Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/&file=LSN50-Battery-Dimension.pdf]],
1002 +)))
1003 +* (((
1004 +[[Lithium-Thionyl Chloride Battery  datasheet>>url:https://www.dragino.com/downloads/downloads/datasheet/Battery/ER26500/ER26500_Datasheet-EN.pdf]],
1005 +)))
1006 +* (((
1007 +[[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]]
1008 +)))
702 702  
1010 + [[image:image-20220610172400-3.png]]
703 703  
704 704  
705 -== 3.2  Set Interrupt Mode ==
706 706  
1014 +=== 2.10.2  Replace the battery ===
1015 +
1016 +(((
1017 +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.
1018 +)))
1019 +
1020 +(((
1021 +
1022 +)))
1023 +
1024 +(((
1025 +The default battery pack of LDDS75 includes a ER18505 plus super capacitor. If user can't find this pack locally, they can find ER18505 or equivalence, which will also work in most case. The SPC can enlarge the battery life for high frequency use (update period below 5 minutes)
1026 +)))
1027 +
1028 +
1029 +
1030 += 3.  Configure LDDS75 via AT Command or LoRaWAN Downlink =
1031 +
1032 +(((
1033 +(((
1034 +Use can configure LDDS75 via AT Command or LoRaWAN Downlink.
1035 +)))
1036 +)))
1037 +
1038 +* (((
1039 +(((
1040 +AT Command Connection: See [[FAQ>>||anchor="H4.A0FAQ"]].
1041 +)))
1042 +)))
1043 +* (((
1044 +(((
1045 +LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
1046 +)))
1047 +)))
1048 +
1049 +(((
1050 +(((
1051 +
1052 +)))
1053 +
1054 +(((
1055 +There are two kinds of commands to configure LDDS75, they are:
1056 +)))
1057 +)))
1058 +
1059 +* (((
1060 +(((
1061 +(% style="color:#4f81bd" %)** General Commands**.
1062 +)))
1063 +)))
1064 +
1065 +(((
1066 +(((
1067 +These commands are to configure:
1068 +)))
1069 +)))
1070 +
1071 +* (((
1072 +(((
1073 +General system settings like: uplink interval.
1074 +)))
1075 +)))
1076 +* (((
1077 +(((
1078 +LoRaWAN protocol & radio related command.
1079 +)))
1080 +)))
1081 +
1082 +(((
1083 +(((
1084 +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]]
1085 +)))
1086 +)))
1087 +
1088 +(((
1089 +(((
1090 +
1091 +)))
1092 +)))
1093 +
1094 +* (((
1095 +(((
1096 +(% style="color:#4f81bd" %)** Commands special design for LDDS75**
1097 +)))
1098 +)))
1099 +
1100 +(((
1101 +(((
1102 +These commands only valid for LDDS75, as below:
1103 +)))
1104 +)))
1105 +
1106 +
1107 +
1108 +== 3.1  Access AT Commands ==
1109 +
1110 +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.
1111 +
1112 +[[image:image-20220610172924-4.png||height="483" width="988"]]
1113 +
1114 +
1115 +Or if you have below board, use below connection:
1116 +
1117 +
1118 +[[image:image-20220610172924-5.png]]
1119 +
1120 +
1121 +(((
1122 +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:
1123 +)))
1124 +
1125 +
1126 + [[image:image-20220610172924-6.png||height="601" width="860"]]
1127 +
1128 +
1129 +
1130 +== 3.2  Set Transmit Interval Time ==
1131 +
1132 +Feature: Change LoRaWAN End Node Transmit Interval.
1133 +
1134 +(% style="color:#037691" %)**AT Command: AT+TDC**
1135 +
1136 +[[image:image-20220610173409-7.png]]
1137 +
1138 +
1139 +(((
1140 +(% style="color:#037691" %)**Downlink Command: 0x01**
1141 +)))
1142 +
1143 +(((
1144 +(((
1145 +Format: Command Code (0x01) followed by 3 bytes time value.
1146 +
1147 +(((
1148 +If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
1149 +)))
1150 +
1151 +* Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1152 +* Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1153 +)))
1154 +)))
1155 +
1156 +
1157 +
1158 +
1159 +
1160 +== 3.3  Set Interrupt Mode ==
1161 +
707 707  Feature, Set Interrupt mode for GPIO_EXIT.
708 708  
709 709  (% style="color:#037691" %)**Downlink Command: AT+INTMOD**
... ... @@ -722,22 +722,27 @@
722 722  * Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
723 723  * Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
724 724  
725 -
726 726  = 4.  FAQ =
727 727  
728 -== 4.1  What is the frequency plan for LDDS20? ==
1182 +== 4.1  What is the frequency plan for LDDS75? ==
729 729  
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"]]
1184 +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"]]
731 731  
732 732  
733 733  
734 734  == 4.2  How to change the LoRa Frequency Bands/Region ==
735 735  
736 -You can follow the instructions for [[how to upgrade image>>||anchor="H2.7A0200BFirmwareChangeLog"]].
1190 +You can follow the instructions for [[how to upgrade image>>||anchor="H2.8A0200BFirmwareChangeLog"]].
737 737  When downloading the images, choose the required image file for download. ​
738 738  
739 739  
740 740  
1195 +== 4.3  Can I use LDDS75 in condensation environment? ==
1196 +
1197 +LDDS75 is not suitable to be used in condensation environment. Condensation on the LDDS75 probe will affect the reading and always got 0.
1198 +
1199 +
1200 +
741 741  = 5.  Trouble Shooting =
742 742  
743 743  == 5.1  Why I can’t join TTN V3 in US915 / AU915 bands? ==
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