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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 173.3
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  
... ... @@ -362,6 +362,7 @@
362 362  * If the sensor value is 0x0000, it means system doesn't detect ultrasonic sensor.
363 363  * If the sensor value lower than 0x0014 (20mm), the sensor value will be invalid.
364 364  
367 +
365 365  === 2.3.3  Interrupt Pin ===
366 366  
367 367  This data field shows if this packet is generated by interrupt or not. [[Click here>>||anchor="H3.2A0SetInterruptMode"]] for the hardware and software set up.
... ... @@ -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]]
411 +[[image:1654850829385-439.png]]
409 409  
410 410  The payload decoder function for TTN V3 is here:
411 411  
... ... @@ -472,7 +472,7 @@
472 472  
473 473  (% style="color:blue" %)**Step 3**(%%)**: Create an account or log in Datacake.**
474 474  
475 -(% 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.**
476 476  
477 477  [[image:1654851029373-510.png]]
478 478  
... ... @@ -483,227 +483,682 @@
483 483  
484 484  
485 485  
486 -== 2.6  LED Indicator ==
489 +== 2.6  Frequency Plans ==
487 487  
488 -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 +)))
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 ==
497 +=== 2.6.1  EU863-870 (EU868) ===
497 497  
499 +(((
500 +(% style="color:blue" %)**Uplink:**
501 +)))
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/]]
504 +868.1 - SF7BW125 to SF12BW125
501 501  )))
502 502  
503 503  (((
508 +868.3 - SF7BW125 to SF12BW125 and SF7BW250
509 +)))
510 +
511 +(((
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 +(((
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]]**
544 +(% style="color:blue" %)**Downlink:**
509 509  )))
510 510  
547 +(((
548 +Uplink channels 1-9 (RX1)
549 +)))
511 511  
551 +(((
552 +869.525 - SF9BW125 (RX2 downlink only)
553 +)))
512 512  
513 -== 2.8  Battery Analysis ==
514 514  
515 515  
557 +=== 2.6.2  US902-928(US915) ===
516 516  
559 +(((
560 +Used in USA, Canada and South America. Default use CHE=2
517 517  
518 -=== 2.8.1  Battery Type ===
562 +(% 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.
564 +903.9 - SF7BW125 to SF10BW125
521 521  
566 +904.1 - SF7BW125 to SF10BW125
522 522  
523 -The battery related documents as below:
568 +904.3 - SF7BW125 to SF10BW125
524 524  
525 -* (((
526 -[[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 +
527 527  )))
528 -* (((
529 -[[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
530 530  )))
531 -* (((
532 -[[Lithium-ion Battery-Capacitor datasheet>>https://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]]
610 +
611 +(((
612 +(% style="color:blue" %)**Uplink:**
533 533  )))
534 534  
535 - [[image:image-20220615102527-16.png]]
615 +(((
616 +486.3 - SF7BW125 to SF12BW125
617 +)))
536 536  
619 +(((
620 +486.5 - SF7BW125 to SF12BW125
621 +)))
537 537  
623 +(((
624 +486.7 - SF7BW125 to SF12BW125
625 +)))
538 538  
539 -== 2.8.2  Battery Note ==
627 +(((
628 +486.9 - SF7BW125 to SF12BW125
629 +)))
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.
631 +(((
632 +487.1 - SF7BW125 to SF12BW125
633 +)))
542 542  
635 +(((
636 +487.3 - SF7BW125 to SF12BW125
637 +)))
543 543  
639 +(((
640 +487.5 - SF7BW125 to SF12BW125
641 +)))
544 544  
545 -=== 2.8.3  Replace the battery ===
643 +(((
644 +487.7 - SF7BW125 to SF12BW125
645 +)))
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.
648 +
549 549  )))
550 550  
551 551  (((
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 +
552 552  
553 553  )))
554 554  
741 +=== 2.6.5  AS920-923 & AS923-925 (AS923) ===
742 +
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)
744 +(% style="color:blue" %)**Default Uplink channel:**
557 557  )))
558 558  
747 +(((
748 +923.2 - SF7BW125 to SF10BW125
749 +)))
559 559  
751 +(((
752 +923.4 - SF7BW125 to SF10BW125
753 +)))
560 560  
561 -== 2.8.4  Battery Life Analyze ==
755 +(((
756 +
757 +)))
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:
759 +(((
760 +(% style="color:blue" %)**Additional Uplink Channel**:
761 +)))
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]]
763 +(((
764 +(OTAA mode, channel added by JoinAccept message)
765 +)))
566 566  
767 +(((
768 +
769 +)))
567 567  
771 +(((
772 +(% style="color:blue" %)**AS920~~AS923 for Japan, Malaysia, Singapore**:
773 +)))
568 568  
569 -= 3.  Using the AT Commands =
775 +(((
776 +922.2 - SF7BW125 to SF10BW125
777 +)))
570 570  
571 571  (((
780 +922.4 - SF7BW125 to SF10BW125
781 +)))
782 +
572 572  (((
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 +(((
573 573  
574 574  )))
802 +
803 +(((
804 +(% 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 ==
807 +(((
808 +923.6 - SF7BW125 to SF10BW125
809 +)))
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.
811 +(((
812 +923.8 - SF7BW125 to SF10BW125
813 +)))
580 580  
815 +(((
816 +924.0 - SF7BW125 to SF10BW125
817 +)))
581 581  
582 -[[image:image-20220610172924-4.png||height="483" width="988"]]
819 +(((
820 +924.2 - SF7BW125 to SF10BW125
821 +)))
583 583  
823 +(((
824 +924.4 - SF7BW125 to SF10BW125
825 +)))
584 584  
585 -Or if you have below board, use below connection:
827 +(((
828 +924.6 - SF7BW125 to SF10BW125
829 +)))
586 586  
831 +(((
832 +
833 +)))
587 587  
588 -[[image:image-20220610172924-5.png]]
835 +(((
836 +(% style="color:blue" %)**Downlink:**
837 +)))
589 589  
839 +(((
840 +Uplink channels 1-8 (RX1)
841 +)))
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:
844 +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/]].
849 +=== 2.6.6  KR920-923 (KR920) ===
599 599  
851 +(((
852 +(% style="color:blue" %)**Default channel:**
853 +)))
600 600  
601 -AT+<CMD>?  :  Help on <CMD>
855 +(((
856 +922.1 - SF7BW125 to SF12BW125
857 +)))
602 602  
603 -AT+<CMD>  :  Run <CMD>
859 +(((
860 +922.3 - SF7BW125 to SF12BW125
861 +)))
604 604  
605 -AT+<CMD>=<value>  :  Set the value
863 +(((
864 +922.5 - SF7BW125 to SF12BW125
865 +)))
606 606  
607 -AT+<CMD>=?  :  Get the value
867 +(((
868 +
869 +)))
608 608  
871 +(((
872 +(% style="color:blue" %)**Uplink: (OTAA mode, channel added by JoinAccept message)**
873 +)))
609 609  
610 -(% style="color:#037691" %)** General Commands :**     
875 +(((
876 +922.1 - SF7BW125 to SF12BW125
877 +)))
611 611  
612 -AT  :  Attention       
879 +(((
880 +922.3 - SF7BW125 to SF12BW125
881 +)))
613 613  
614 -AT?  :  Short Help     
883 +(((
884 +922.5 - SF7BW125 to SF12BW125
885 +)))
615 615  
616 -ATZ :  MCU Reset    
887 +(((
888 +922.7 - SF7BW125 to SF12BW125
889 +)))
617 617  
618 -AT+TDC :  Application Data Transmission Interval 
891 +(((
892 +922.9 - SF7BW125 to SF12BW125
893 +)))
619 619  
895 +(((
896 +923.1 - SF7BW125 to SF12BW125
897 +)))
620 620  
621 -(% style="color:#037691" %)** Keys, IDs and EUIs management :**
899 +(((
900 +923.3 - SF7BW125 to SF12BW125
901 +)))
622 622  
623 -AT+APPEUI  :  Application EUI      
903 +(((
904 +
905 +)))
624 624  
625 -AT+APPKEY  :  Application Key     
907 +(((
908 +(% style="color:blue" %)**Downlink:**
909 +)))
626 626  
627 -AT+APPSKEY  :  Application Session Key
911 +(((
912 +Uplink channels 1-7(RX1)
913 +)))
628 628  
629 -AT+DADDR :  Device Address     
915 +(((
916 +921.9 - SF12BW125 (RX2 downlink only; SF12BW125 might be changed to SF9BW125)
917 +)))
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  
921 +=== 2.6.7  IN865-867 (IN865) ===
636 636  
637 -AT+CFM :  Confirm Mode       
923 +(((
924 +(% style="color:blue" %)**Uplink:**
925 +)))
638 638  
639 -AT+CFS :  Confirm Status       
927 +(((
928 +865.0625 - SF7BW125 to SF12BW125
929 +)))
640 640  
641 -AT+JOIN  :  Join LoRa? Network       
931 +(((
932 +865.4025 - SF7BW125 to SF12BW125
933 +)))
642 642  
643 -AT+NJM  :  LoRa? Network Join Mode    
935 +(((
936 +865.9850 - SF7BW125 to SF12BW125
937 +)))
644 644  
645 -AT+NJS  :  LoRa? Network Join Status    
939 +(((
940 +
941 +)))
646 646  
647 -AT+RECV  :  Print Last Received Data in Raw Format
943 +(((
944 +(% style="color:blue" %)**Downlink:**
945 +)))
648 648  
649 -AT+RECVB :  Print Last Received Data in Binary Format      
947 +(((
948 +Uplink channels 1-3 (RX1)
949 +)))
650 650  
651 -AT+SEND  :  Send Text Data      
951 +(((
952 +866.550 - SF10BW125 (RX2)
953 +)))
652 652  
653 -AT+SENB  :  Send Hexadecimal Data
654 654  
655 655  
656 -(% style="color:#037691" %)** LoRa Network Management :**
957 +== 2.7  LED Indicator ==
657 657  
658 -AT+ADR  :  Adaptive Rate
959 +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 
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.
663 663  
664 -AT+DR  :  Data Rate (Can Only be Modified after ADR=0)     
967 +== 2.8  ​Firmware Change Log ==
665 665  
666 -AT+FCD  :  Frame Counter Downlink       
667 667  
668 -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 +)))
669 669  
670 -AT+JN1DL  :  Join Accept Delay1
974 +(((
975 +
976 +)))
671 671  
672 -AT+JN2DL  :  Join Accept Delay2
978 +(((
979 +**Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
980 +)))
673 673  
674 -AT+PNM  :  Public Network Mode   
675 675  
676 -AT+RX1DL  :  Receive Delay1      
677 677  
678 -AT+RX2DL  :  Receive Delay2      
984 +== 2.9  Mechanical ==
679 679  
680 -AT+RX2DR  :  Rx2 Window Data Rate 
681 681  
682 -AT+RX2FQ  :  Rx2 Window Frequency
987 +[[image:image-20220610172003-1.png]]
683 683  
684 -AT+TXP  :  Transmit Power
685 685  
990 +[[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   
994 +== 2.10  Battery Analysis ==
692 692  
693 -AT+VER  :  Image Version and Frequency Band       
996 +=== 2.10.1  Battery Type ===
694 694  
695 -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.
696 696  
697 -AT+PORT  :  Application Port    
698 698  
699 -AT+CHS  :  Get or Set Frequency (Unit: Hz) for Single Channel Mode
1001 +The battery related documents as below:
700 700  
701 - 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 +)))
702 702  
1013 + [[image:image-20220610172400-3.png]]
703 703  
704 704  
705 -== 3.2  Set Interrupt Mode ==
706 706  
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 +
1133 +== 3.2  Set Transmit Interval Time ==
1134 +
1135 +Feature: Change LoRaWAN End Node Transmit Interval.
1136 +
1137 +(% style="color:#037691" %)**AT Command: AT+TDC**
1138 +
1139 +[[image:image-20220610173409-7.png]]
1140 +
1141 +
1142 +(((
1143 +(% style="color:#037691" %)**Downlink Command: 0x01**
1144 +)))
1145 +
1146 +(((
1147 +(((
1148 +Format: Command Code (0x01) followed by 3 bytes time value.
1149 +
1150 +(((
1151 +If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
1152 +)))
1153 +
1154 +* Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1155 +* Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1156 +)))
1157 +)))
1158 +
1159 +
1160 +
1161 +
1162 +
1163 +== 3.3  Set Interrupt Mode ==
1164 +
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? ==
1185 +== 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"]]
1187 +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"]].
1193 +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  
1198 +== 4.3  Can I use LDDS75 in condensation environment? ==
1199 +
1200 +LDDS75 is not suitable to be used in condensation environment. Condensation on the LDDS75 probe will affect the reading and always got 0.
1201 +
1202 +
1203 +
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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