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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 174.8
edited by Xiaoling
on 2022/06/15 10:37
Change comment: There is no comment for this version

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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  
365 +
366 +
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.
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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]]
410 +[[image:1654850829385-439.png]]
409 409  
410 410  The payload decoder function for TTN V3 is here:
411 411  
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493 493  * Solid ON for 5 seconds once device successful Join the network.
494 494  * Blink once when device transmit a packet.
495 495  
498 +
499 +
496 496  == 2.7  ​Firmware Change Log ==
497 497  
498 498  
... ... @@ -589,121 +589,46 @@
589 589  
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:
596 +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:
593 593  )))
594 594  
595 595  
596 596   [[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/]].
599 599  
600 600  
601 -AT+<CMD>?  :  Help on <CMD>
604 +== 3.2  Set Transmit Interval Time ==
602 602  
603 -AT+<CMD>  :  Run <CMD>
606 +Feature: Change LoRaWAN End Node Transmit Interval.
604 604  
605 -AT+<CMD>=<value>  :  Set the value
608 +(% style="color:#037691" %)**AT Command: AT+TDC**
606 606  
607 -AT+<CMD>=?  :  Get the value
610 +[[image:image-20220610173409-7.png]]
608 608  
609 609  
610 -(% style="color:#037691" %)** General Commands :**     
613 +(((
614 +(% style="color:#037691" %)**Downlink Command: 0x01**
615 +)))
611 611  
612 -AT  :  Attention       
617 +(((
618 +(((
619 +Format: Command Code (0x01) followed by 3 bytes time value.
613 613  
614 -AT?  :  Short Help     
621 +(((
622 +If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
623 +)))
615 615  
616 -ATZ :  MCU Reset    
625 +* Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
626 +* Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
627 +)))
628 +)))
617 617  
618 -AT+TDC :  Application Data Transmission Interval 
619 619  
620 620  
621 -(% style="color:#037691" %)** Keys, IDs and EUIs management :**
622 622  
623 -AT+APPEUI  :  Application EUI      
624 624  
625 -AT+APPKEY  :  Application Key     
634 +== 3.3  Set Interrupt Mode ==
626 626  
627 -AT+APPSKEY  :  Application Session Key
628 -
629 -AT+DADDR :  Device Address     
630 -
631 -AT+DEUI :  Device EUI     
632 -
633 -AT+NWKID  :  Network ID (You can enter this command change only after successful network connection) 
634 -
635 -AT+NWKSKEY  : Network Session Key Joining and sending date on LoRa network  
636 -
637 -AT+CFM :  Confirm Mode       
638 -
639 -AT+CFS :  Confirm Status       
640 -
641 -AT+JOIN  :  Join LoRa? Network       
642 -
643 -AT+NJM  :  LoRa? Network Join Mode    
644 -
645 -AT+NJS  :  LoRa? Network Join Status    
646 -
647 -AT+RECV  :  Print Last Received Data in Raw Format
648 -
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 -
707 707  Feature, Set Interrupt mode for GPIO_EXIT.
708 708  
709 709  (% style="color:#037691" %)**Downlink Command: AT+INTMOD**
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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? ==
656 +== 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"]]
658 +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"]].
664 +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  
669 +== 4.3  Can I use LDDS75 in condensation environment? ==
670 +
671 +LDDS75 is not suitable to be used in condensation environment. Condensation on the LDDS75 probe will affect the reading and always got 0.
672 +
673 +
674 +
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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