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Last modified by Mengting Qiu on 2025/08/06 17:02
From version 175.2
edited by Xiaoling
on 2022/06/15 10:46
Change comment: There is no comment for this version
To version 173.3
edited by Xiaoling
on 2022/06/15 10:11
Change comment: There is no comment for this version

Summary

Details

Page properties
Content
... ... @@ -198,6 +198,7 @@
198 198  * Smart liquid control solution.
199 199  * Smart liquefied gas solution.
200 200  
201 +
201 201  == 1.7  Precautions ==
202 202  
203 203  * At room temperature, containers of different materials, such as steel, glass, iron, ceramics, non-foamed plastics and other dense materials, have different detection blind areas and detection limit heights.
... ... @@ -204,6 +204,7 @@
204 204  * For containers of the same material at room temperature, the detection blind zone and detection limit height are also different for the thickness of the container.
205 205  * When the detected liquid level exceeds the effective detection value of the sensor, and the liquid level of the liquid to be measured shakes or tilts, the detected liquid height is unstable.
206 206  
208 +
207 207  == 1.8  Pin mapping and power on ==
208 208  
209 209  
... ... @@ -406,7 +406,7 @@
406 406  While using TTN network, you can add the payload format to decode the payload.
407 407  
408 408  
409 -[[image:1655261164557-670.png]]
411 +[[image:1654850829385-439.png]]
410 410  
411 411  The payload decoder function for TTN V3 is here:
412 412  
... ... @@ -473,7 +473,7 @@
473 473  
474 474  (% style="color:blue" %)**Step 3**(%%)**: Create an account or log in Datacake.**
475 475  
476 -(% style="color:blue" %)**Step 4**(%%)**: Search the LDDS75 and add DevEUI.(% style="color:red" %)(Note: LDDS20 use same payload as LDDS75)(%%)**
478 +(% style="color:blue" %)**Step 4**(%%)**: Search the LDDS75 and add DevEUI.**
477 477  
478 478  [[image:1654851029373-510.png]]
479 479  
... ... @@ -484,226 +484,650 @@
484 484  
485 485  
486 486  
487 -== 2.6  LED Indicator ==
489 +== 2.6  Frequency Plans ==
488 488  
489 -The LDDS20 has an internal LED which is to show the status of different state.
491 +(((
492 +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.
493 +)))
490 490  
491 491  
492 -* Blink once when device power on.
493 -* The device detects the sensor and flashes 5 times.
494 -* Solid ON for 5 seconds once device successful Join the network.
495 -* Blink once when device transmit a packet.
496 496  
497 +=== 2.6.1  EU863-870 (EU868) ===
497 497  
498 -== 2.7  ​Firmware Change Log ==
499 +(((
500 +(% style="color:blue" %)**Uplink:**
501 +)))
499 499  
503 +(((
504 +868.1 - SF7BW125 to SF12BW125
505 +)))
500 500  
501 501  (((
502 -**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/]]
508 +868.3 - SF7BW125 to SF12BW125 and SF7BW250
503 503  )))
504 504  
505 505  (((
512 +868.5 - SF7BW125 to SF12BW125
513 +)))
514 +
515 +(((
516 +867.1 - SF7BW125 to SF12BW125
517 +)))
518 +
519 +(((
520 +867.3 - SF7BW125 to SF12BW125
521 +)))
522 +
523 +(((
524 +867.5 - SF7BW125 to SF12BW125
525 +)))
526 +
527 +(((
528 +867.7 - SF7BW125 to SF12BW125
529 +)))
530 +
531 +(((
532 +867.9 - SF7BW125 to SF12BW125
533 +)))
534 +
535 +(((
536 +868.8 - FSK
537 +)))
538 +
539 +(((
506 506  
507 507  )))
508 508  
509 509  (((
510 -**Firmware Upgrade Method:  [[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]**
544 +(% style="color:blue" %)**Downlink:**
511 511  )))
512 512  
547 +(((
548 +Uplink channels 1-9 (RX1)
549 +)))
513 513  
551 +(((
552 +869.525 - SF9BW125 (RX2 downlink only)
553 +)))
514 514  
515 -== 2.8  Battery Analysis ==
516 516  
517 517  
557 +=== 2.6.2  US902-928(US915) ===
518 518  
559 +(((
560 +Used in USA, Canada and South America. Default use CHE=2
519 519  
520 -=== 2.8.1  Battery Type ===
562 +(% style="color:blue" %)**Uplink:**
521 521  
522 -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.
564 +903.9 - SF7BW125 to SF10BW125
523 523  
566 +904.1 - SF7BW125 to SF10BW125
524 524  
525 -The battery related documents as below:
568 +904.3 - SF7BW125 to SF10BW125
526 526  
527 -* (((
528 -[[Battery Dimension>>https://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]],
570 +904.5 - SF7BW125 to SF10BW125
571 +
572 +904.7 - SF7BW125 to SF10BW125
573 +
574 +904.9 - SF7BW125 to SF10BW125
575 +
576 +905.1 - SF7BW125 to SF10BW125
577 +
578 +905.3 - SF7BW125 to SF10BW125
579 +
580 +
581 +(% style="color:blue" %)**Downlink:**
582 +
583 +923.3 - SF7BW500 to SF12BW500
584 +
585 +923.9 - SF7BW500 to SF12BW500
586 +
587 +924.5 - SF7BW500 to SF12BW500
588 +
589 +925.1 - SF7BW500 to SF12BW500
590 +
591 +925.7 - SF7BW500 to SF12BW500
592 +
593 +926.3 - SF7BW500 to SF12BW500
594 +
595 +926.9 - SF7BW500 to SF12BW500
596 +
597 +927.5 - SF7BW500 to SF12BW500
598 +
599 +923.3 - SF12BW500(RX2 downlink only)
600 +
601 +
602 +
529 529  )))
530 -* (((
531 -[[Lithium-Thionyl Chloride Battery  datasheet>>https://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]],
604 +
605 +=== 2.6.3  CN470-510 (CN470) ===
606 +
607 +(((
608 +Used in China, Default use CHE=1
532 532  )))
533 -* (((
534 -[[Lithium-ion Battery-Capacitor datasheet>>https://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]]
610 +
611 +(((
612 +(% style="color:blue" %)**Uplink:**
535 535  )))
536 536  
537 - [[image:image-20220615102527-16.png]]
615 +(((
616 +486.3 - SF7BW125 to SF12BW125
617 +)))
538 538  
619 +(((
620 +486.5 - SF7BW125 to SF12BW125
621 +)))
539 539  
623 +(((
624 +486.7 - SF7BW125 to SF12BW125
625 +)))
540 540  
541 -== 2.8.2  Battery Note ==
627 +(((
628 +486.9 - SF7BW125 to SF12BW125
629 +)))
542 542  
543 -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.
631 +(((
632 +487.1 - SF7BW125 to SF12BW125
633 +)))
544 544  
635 +(((
636 +487.3 - SF7BW125 to SF12BW125
637 +)))
545 545  
639 +(((
640 +487.5 - SF7BW125 to SF12BW125
641 +)))
546 546  
547 -=== 2.8.3  Replace the battery ===
643 +(((
644 +487.7 - SF7BW125 to SF12BW125
645 +)))
548 548  
549 549  (((
550 -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.
648 +
551 551  )))
552 552  
553 553  (((
652 +(% style="color:blue" %)**Downlink:**
653 +)))
654 +
655 +(((
656 +506.7 - SF7BW125 to SF12BW125
657 +)))
658 +
659 +(((
660 +506.9 - SF7BW125 to SF12BW125
661 +)))
662 +
663 +(((
664 +507.1 - SF7BW125 to SF12BW125
665 +)))
666 +
667 +(((
668 +507.3 - SF7BW125 to SF12BW125
669 +)))
670 +
671 +(((
672 +507.5 - SF7BW125 to SF12BW125
673 +)))
674 +
675 +(((
676 +507.7 - SF7BW125 to SF12BW125
677 +)))
678 +
679 +(((
680 +507.9 - SF7BW125 to SF12BW125
681 +)))
682 +
683 +(((
684 +508.1 - SF7BW125 to SF12BW125
685 +)))
686 +
687 +(((
688 +505.3 - SF12BW125 (RX2 downlink only)
689 +)))
690 +
691 +
692 +
693 +=== 2.6.4  AU915-928(AU915) ===
694 +
695 +(((
696 +Default use CHE=2
697 +
698 +(% style="color:blue" %)**Uplink:**
699 +
700 +916.8 - SF7BW125 to SF12BW125
701 +
702 +917.0 - SF7BW125 to SF12BW125
703 +
704 +917.2 - SF7BW125 to SF12BW125
705 +
706 +917.4 - SF7BW125 to SF12BW125
707 +
708 +917.6 - SF7BW125 to SF12BW125
709 +
710 +917.8 - SF7BW125 to SF12BW125
711 +
712 +918.0 - SF7BW125 to SF12BW125
713 +
714 +918.2 - SF7BW125 to SF12BW125
715 +
716 +
717 +(% style="color:blue" %)**Downlink:**
718 +
719 +923.3 - SF7BW500 to SF12BW500
720 +
721 +923.9 - SF7BW500 to SF12BW500
722 +
723 +924.5 - SF7BW500 to SF12BW500
724 +
725 +925.1 - SF7BW500 to SF12BW500
726 +
727 +925.7 - SF7BW500 to SF12BW500
728 +
729 +926.3 - SF7BW500 to SF12BW500
730 +
731 +926.9 - SF7BW500 to SF12BW500
732 +
733 +927.5 - SF7BW500 to SF12BW500
734 +
735 +923.3 - SF12BW500(RX2 downlink only)
736 +
737 +
554 554  
555 555  )))
556 556  
741 +=== 2.6.5  AS920-923 & AS923-925 (AS923) ===
742 +
557 557  (((
558 -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)
744 +(% style="color:blue" %)**Default Uplink channel:**
559 559  )))
560 560  
747 +(((
748 +923.2 - SF7BW125 to SF10BW125
749 +)))
561 561  
751 +(((
752 +923.4 - SF7BW125 to SF10BW125
753 +)))
562 562  
563 -== 2.8.4  Battery Life Analyze ==
755 +(((
756 +
757 +)))
564 564  
565 -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:
759 +(((
760 +(% style="color:blue" %)**Additional Uplink Channel**:
761 +)))
566 566  
567 -[[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]]
763 +(((
764 +(OTAA mode, channel added by JoinAccept message)
765 +)))
568 568  
767 +(((
768 +
769 +)))
569 569  
771 +(((
772 +(% style="color:blue" %)**AS920~~AS923 for Japan, Malaysia, Singapore**:
773 +)))
570 570  
571 -= 3.  Using the AT Commands =
775 +(((
776 +922.2 - SF7BW125 to SF10BW125
777 +)))
572 572  
573 573  (((
780 +922.4 - SF7BW125 to SF10BW125
781 +)))
782 +
574 574  (((
784 +922.6 - SF7BW125 to SF10BW125
785 +)))
786 +
787 +(((
788 +922.8 - SF7BW125 to SF10BW125
789 +)))
790 +
791 +(((
792 +923.0 - SF7BW125 to SF10BW125
793 +)))
794 +
795 +(((
796 +922.0 - SF7BW125 to SF10BW125
797 +)))
798 +
799 +(((
575 575  
576 576  )))
802 +
803 +(((
804 +(% style="color:blue" %)**AS923 ~~ AS925 for Brunei, Cambodia, Hong Kong, Indonesia, Laos, Taiwan, Thailand, Vietnam**:
577 577  )))
578 578  
579 -== 3.1  Access AT Commands ==
807 +(((
808 +923.6 - SF7BW125 to SF10BW125
809 +)))
580 580  
581 -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.
811 +(((
812 +923.8 - SF7BW125 to SF10BW125
813 +)))
582 582  
815 +(((
816 +924.0 - SF7BW125 to SF10BW125
817 +)))
583 583  
584 -[[image:image-20220610172924-4.png||height="483" width="988"]]
819 +(((
820 +924.2 - SF7BW125 to SF10BW125
821 +)))
585 585  
823 +(((
824 +924.4 - SF7BW125 to SF10BW125
825 +)))
586 586  
587 -Or if you have below board, use below connection:
827 +(((
828 +924.6 - SF7BW125 to SF10BW125
829 +)))
588 588  
831 +(((
832 +
833 +)))
589 589  
590 -[[image:image-20220610172924-5.png]]
835 +(((
836 +(% style="color:blue" %)**Downlink:**
837 +)))
591 591  
839 +(((
840 +Uplink channels 1-8 (RX1)
841 +)))
592 592  
593 593  (((
594 -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:
844 +923.2 - SF10BW125 (RX2)
595 595  )))
596 596  
597 597  
598 - [[image:image-20220610172924-6.png||height="601" width="860"]]
599 599  
600 -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/]].
849 +=== 2.6.6  KR920-923 (KR920) ===
601 601  
851 +(((
852 +(% style="color:blue" %)**Default channel:**
853 +)))
602 602  
603 -AT+<CMD>?  :  Help on <CMD>
855 +(((
856 +922.1 - SF7BW125 to SF12BW125
857 +)))
604 604  
605 -AT+<CMD>  :  Run <CMD>
859 +(((
860 +922.3 - SF7BW125 to SF12BW125
861 +)))
606 606  
607 -AT+<CMD>=<value>  :  Set the value
863 +(((
864 +922.5 - SF7BW125 to SF12BW125
865 +)))
608 608  
609 -AT+<CMD>=?  :  Get the value
867 +(((
868 +
869 +)))
610 610  
871 +(((
872 +(% style="color:blue" %)**Uplink: (OTAA mode, channel added by JoinAccept message)**
873 +)))
611 611  
612 -(% style="color:#037691" %)** General Commands :**     
875 +(((
876 +922.1 - SF7BW125 to SF12BW125
877 +)))
613 613  
614 -AT                    : Attention       
879 +(((
880 +922.3 - SF7BW125 to SF12BW125
881 +)))
615 615  
616 -AT?                            : Short Help     
883 +(((
884 +922.5 - SF7BW125 to SF12BW125
885 +)))
617 617  
618 -ATZ                            : MCU Reset    
887 +(((
888 +922.7 - SF7BW125 to SF12BW125
889 +)))
619 619  
620 -AT+TDC           : Application Data Transmission Interval 
891 +(((
892 +922.9 - SF7BW125 to SF12BW125
893 +)))
621 621  
895 +(((
896 +923.1 - SF7BW125 to SF12BW125
897 +)))
622 622  
623 -(% style="color:#037691" %)** Keys, IDs and EUIs management :**
899 +(((
900 +923.3 - SF7BW125 to SF12BW125
901 +)))
624 624  
625 -AT+APPEUI              : Application EUI      
903 +(((
904 +
905 +)))
626 626  
627 -AT+APPKEY              : Application Key     
907 +(((
908 +(% style="color:blue" %)**Downlink:**
909 +)))
628 628  
629 -AT+APPSKEY            : Application Session Key
911 +(((
912 +Uplink channels 1-7(RX1)
913 +)))
630 630  
631 -AT+DADDR              : Device Address     
915 +(((
916 +921.9 - SF12BW125 (RX2 downlink only; SF12BW125 might be changed to SF9BW125)
917 +)))
632 632  
633 -AT+DEUI                   : Device EUI     
634 634  
635 -AT+NWKID               : Network ID (You can enter this command change only after successful network connection) 
636 636  
637 -AT+NWKSKEY          : Network Session Key Joining and sending date on LoRa network  
921 +=== 2.6.7  IN865-867 (IN865) ===
638 638  
639 -AT+CFM          : Confirm Mode       
923 +(((
924 +(% style="color:blue" %)**Uplink:**
925 +)))
640 640  
641 -AT+CFS                     : Confirm Status       
927 +(((
928 +865.0625 - SF7BW125 to SF12BW125
929 +)))
642 642  
643 -AT+JOIN          : Join LoRa? Network       
931 +(((
932 +865.4025 - SF7BW125 to SF12BW125
933 +)))
644 644  
645 -AT+NJM          : LoRa? Network Join Mode    
935 +(((
936 +865.9850 - SF7BW125 to SF12BW125
937 +)))
646 646  
647 -AT+NJS                     : LoRa? Network Join Status    
939 +(((
940 +
941 +)))
648 648  
649 -AT+RECV                  : Print Last Received Data in Raw Format
943 +(((
944 +(% style="color:blue" %)**Downlink:**
945 +)))
650 650  
651 -AT+RECVB                : Print Last Received Data in Binary Format      
947 +(((
948 +Uplink channels 1-3 (RX1)
949 +)))
652 652  
653 -AT+SEND                  : Send Text Data      
951 +(((
952 +866.550 - SF10BW125 (RX2)
953 +)))
654 654  
655 -AT+SENB                  : Send Hexadecimal Data
656 656  
657 657  
658 -(% style="color:#037691" %)** LoRa Network Management :**
957 +== 2.7  LED Indicator ==
659 659  
660 -AT+ADR          : Adaptive Rate
959 +The LDDS75 has an internal LED which is to show the status of different state.
661 661  
662 -AT+CLASS                : LoRa Class(Currently only support class A
663 663  
664 -AT+DCS           : Duty Cycle Setting 
962 +* Blink once when device power on.
963 +* The device detects the sensor and flashes 5 times.
964 +* Solid ON for 5 seconds once device successful Join the network.
965 +* Blink once when device transmit a packet.
665 665  
666 -AT+DR                      : Data Rate (Can Only be Modified after ADR=0)     
967 +== 2.8  ​Firmware Change Log ==
667 667  
668 -AT+FCD           : Frame Counter Downlink       
669 669  
670 -AT+FCU           : Frame Counter Uplink   
970 +(((
971 +**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/]]
972 +)))
671 671  
672 -AT+JN1DL                : Join Accept Delay1
974 +(((
975 +
976 +)))
673 673  
674 -AT+JN2DL                : Join Accept Delay2
978 +(((
979 +**Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
980 +)))
675 675  
676 -AT+PNM                   : Public Network Mode   
677 677  
678 -AT+RX1DL                : Receive Delay1      
679 679  
680 -AT+RX2DL                : Receive Delay2      
984 +== 2.9  Mechanical ==
681 681  
682 -AT+RX2DR               : Rx2 Window Data Rate 
683 683  
684 -AT+RX2FQ               : Rx2 Window Frequency
987 +[[image:image-20220610172003-1.png]]
685 685  
686 -AT+TXP           : Transmit Power
687 687  
990 +[[image:image-20220610172003-2.png]]
688 688  
689 -(% style="color:#037691" %)** Information :**
690 690  
691 -AT+RSSI           : RSSI of the Last Received Packet   
692 692  
693 -AT+SNR           : SNR of the Last Received Packet   
994 +== 2.10  Battery Analysis ==
694 694  
695 -AT+VER           : Image Version and Frequency Band       
996 +=== 2.10.1  Battery Type ===
696 696  
697 -AT+FDR           : Factory Data Reset
998 +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.
698 698  
699 -AT+PORT                  : Application Port    
700 700  
701 -AT+CHS           : Get or Set Frequency (Unit: Hz) for Single Channel Mode
1001 +The battery related documents as below:
702 702  
703 - AT+CHE                   : Get or Set eight channels mode, Only for US915, AU915, CN470
1003 +* (((
1004 +[[Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/&file=LSN50-Battery-Dimension.pdf]],
1005 +)))
1006 +* (((
1007 +[[Lithium-Thionyl Chloride Battery  datasheet>>url:https://www.dragino.com/downloads/downloads/datasheet/Battery/ER26500/ER26500_Datasheet-EN.pdf]],
1008 +)))
1009 +* (((
1010 +[[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]]
1011 +)))
704 704  
1013 + [[image:image-20220610172400-3.png]]
705 705  
706 706  
1016 +
1017 +=== 2.10.2  Replace the battery ===
1018 +
1019 +(((
1020 +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.
1021 +)))
1022 +
1023 +(((
1024 +
1025 +)))
1026 +
1027 +(((
1028 +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)
1029 +)))
1030 +
1031 +
1032 +
1033 += 3.  Configure LDDS75 via AT Command or LoRaWAN Downlink =
1034 +
1035 +(((
1036 +(((
1037 +Use can configure LDDS75 via AT Command or LoRaWAN Downlink.
1038 +)))
1039 +)))
1040 +
1041 +* (((
1042 +(((
1043 +AT Command Connection: See [[FAQ>>||anchor="H4.A0FAQ"]].
1044 +)))
1045 +)))
1046 +* (((
1047 +(((
1048 +LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
1049 +)))
1050 +)))
1051 +
1052 +(((
1053 +(((
1054 +
1055 +)))
1056 +
1057 +(((
1058 +There are two kinds of commands to configure LDDS75, they are:
1059 +)))
1060 +)))
1061 +
1062 +* (((
1063 +(((
1064 +(% style="color:#4f81bd" %)** General Commands**.
1065 +)))
1066 +)))
1067 +
1068 +(((
1069 +(((
1070 +These commands are to configure:
1071 +)))
1072 +)))
1073 +
1074 +* (((
1075 +(((
1076 +General system settings like: uplink interval.
1077 +)))
1078 +)))
1079 +* (((
1080 +(((
1081 +LoRaWAN protocol & radio related command.
1082 +)))
1083 +)))
1084 +
1085 +(((
1086 +(((
1087 +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]]
1088 +)))
1089 +)))
1090 +
1091 +(((
1092 +(((
1093 +
1094 +)))
1095 +)))
1096 +
1097 +* (((
1098 +(((
1099 +(% style="color:#4f81bd" %)** Commands special design for LDDS75**
1100 +)))
1101 +)))
1102 +
1103 +(((
1104 +(((
1105 +These commands only valid for LDDS75, as below:
1106 +)))
1107 +)))
1108 +
1109 +
1110 +
1111 +== 3.1  Access AT Commands ==
1112 +
1113 +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.
1114 +
1115 +[[image:image-20220610172924-4.png||height="483" width="988"]]
1116 +
1117 +
1118 +Or if you have below board, use below connection:
1119 +
1120 +
1121 +[[image:image-20220610172924-5.png]]
1122 +
1123 +
1124 +(((
1125 +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:
1126 +)))
1127 +
1128 +
1129 + [[image:image-20220610172924-6.png||height="601" width="860"]]
1130 +
1131 +
1132 +
707 707  == 3.2  Set Transmit Interval Time ==
708 708  
709 709  Feature: Change LoRaWAN End Node Transmit Interval.
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