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Last modified by Xiaoling on 2023/07/18 10:12
From version 170.28
edited by Xiaoling
on 2022/06/22 11:17
Change comment: There is no comment for this version
To version 170.30
edited by Xiaoling
on 2022/06/22 11:22
Change comment: There is no comment for this version

Summary

Details

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Content
... ... @@ -59,7 +59,6 @@
59 59  * Datalog feature
60 60  
61 61  
62 -
63 63  == 1.3 Specification ==
64 64  
65 65  
... ... @@ -85,7 +85,6 @@
85 85  * Operating Range: -55 °C ~~ 125 °C
86 86  
87 87  
88 -
89 89  = 2. Connect LHT65N to IoT Server =
90 90  
91 91  == 2.1 How does LHT65N work? ==
... ... @@ -267,6 +267,10 @@
267 267  * The 7th byte (EXT #): defines the external sensor model.
268 268  * The 8(% _msthash="734578" _msttexthash="21372" _mstvisible="4" %)^^th^^(%%) ~~ 11(% _msthash="734579" _msttexthash="21372" _mstvisible="4" %)^^th^^(%%) byte: the value for external sensor value. The definition is based on external sensor type. (If EXT=0, there won’t be these four bytes.)
269 269  
268 +
269 +
270 +
271 +
270 270  === 2.4.1 Decoder in TTN V3 ===
271 271  
272 272  When the uplink payload arrives TTNv3, it shows HEX format and not friendly to read. We can add LHT65N decoder in TTNv3 for friendly reading.
... ... @@ -297,6 +297,10 @@
297 297  * BAT status=(0Xcba4>>14)&0xFF=11(B)，very good
298 298  * Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV
299 299  
302 +
303 +
304 +
305 +
300 300  === 2.4.3 Built-in Temperature ===
301 301  
302 302  [[image:image-20220522235639-2.png||_mstalt="431756" _mstvisible="3" height="138" width="722"]]
... ... @@ -307,6 +307,10 @@
307 307  
308 308  * Temperature:  (0xF5C6-65536)/100=-26.18℃
309 309  
316 +
317 +
318 +
319 +
310 310  === 2.4.4 Built-in Humidity ===
311 311  
312 312  [[image:image-20220522235639-4.png||_mstalt="432484" _mstvisible="3" height="138" width="722"]]
... ... @@ -313,6 +313,10 @@
313 313  
314 314  * Humidity:    0x025C/10=60.4%
315 315  
326 +
327 +
328 +
329 +
316 316  === 2.4.5 Ext # ===
317 317  
318 318  Bytes for External Sensor:
... ... @@ -465,6 +465,10 @@
465 465  * Sync time OK:  1: Set time ok，0: N/A. After time SYNC request is sent, LHT65N will set this bit to 0 until got the time stamp from the application server.
466 466  * Unix Time Request:  1: Request server downlink Unix time, 0 : N/A. In this mode, LHT65N will set this bit to 1 every 10 days to request a time SYNC. (AT+SYNCMOD to set this)
467 467  
482 +
483 +
484 +
485 +
468 468  ==== 2.4.6.3 Ext~=6, ADC Sensor (use with E2 Cable) ====
469 469  
470 470  In this mode, user can connect external ADC sensor to check ADC value. The 3V3_OUT can
... ... @@ -539,6 +539,10 @@
539 539  1. IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specify time range.
540 540  1. Set [[PNACKMD=1>>||anchor="H4.13AutoSendNone-ACKmessages"]], LHT65N will wait for ACK for every uplink, when there is no LoRaWAN network, LHT65N will store the sensor data, and it will send all messages after network recover.
541 541  
560 +
561 +
562 +
563 +
542 542  === 2.6.2 Unix TimeStamp ===
543 543  
544 544  
... ... @@ -561,20 +561,37 @@
561 561  
562 562  === 2.6.3 Set Device Time ===
563 563  
586 +(((
564 564  There are two ways to set device's time:
588 +)))
565 565  
590 +(((
566 566  **~1. Through LoRaWAN MAC Command (Default settings)**
592 +)))
567 567  
594 +(((
568 568  User need to set SYNCMOD=1 to enable sync time via MAC command.
596 +)))
569 569  
598 +(((
570 570  Once LHT65N Joined LoRaWAN network, it will send the MAC command (DeviceTimeReq) and the server will reply with (DeviceTimeAns) to send the current time to LHT65N. If LHT65N fails to get the time from the server, LHT65N will use the internal time and wait for next time request (AT+SYNCTDC to set the time request period, default is 10 days).
600 +)))
571 571  
602 +(((
572 572  (% style="color:red" %)Note: LoRaWAN Server need to support LoRaWAN v1.0.3(MAC v1.0.3) or higher to support this MAC command feature, Chirpstack,TTN V3 v3 and loriot support but TTN V3 v2 doesn’t support. If server doesn’t support this command, it will through away uplink packet with this command, so user will lose the packet with time request for TTN V3 v2 if SYNCMOD=1.
604 +)))
573 573  
606 +(((
607 +
608 +)))
574 574  
610 +(((
575 575  **2. Manually Set Time**
612 +)))
576 576  
614 +(((
577 577  User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
616 +)))
578 578  
579 579  
580 580  
... ... @@ -741,9 +741,11 @@
741 741  (% _mstvisible="2" %)
742 742  (((
743 743  (% _msthash="736723" _msttexthash="2005003" _mstvisible="3" %)
783 +(((
744 744  Poll Message Flag: 1: This message is a poll message reply.
745 745  )))
746 746  )))
787 +)))
747 747  
748 748  (% _mstvisible="1" %)
749 749  * (% _mstvisible="3" %)
... ... @@ -751,17 +751,21 @@
751 751  (% _mstvisible="4" %)
752 752  (((
753 753  (% _msthash="1197157" _msttexthash="561548" _mstvisible="5" %)
795 +(((
754 754  Poll Message Flag is set to 1.
755 755  )))
756 756  )))
799 +)))
757 757  * (% _mstvisible="3" %)
758 758  (((
759 759  (% _mstvisible="4" %)
760 760  (((
761 761  (% _msthash="1197158" _msttexthash="9284964" _mstvisible="5" %)
805 +(((
762 762  Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.
763 763  )))
764 764  )))
809 +)))
765 765  
766 766  (% _mstvisible="1" %)
767 767  (((
... ... @@ -768,12 +768,16 @@
768 768  (% _mstvisible="2" %)
769 769  (((
770 770  (% _msthash="736724" _msttexthash="2242344" _mstvisible="3" %)
816 +(((
771 771  
818 +)))
772 772  
773 773  (% _msthash="736724" _msttexthash="2242344" _mstvisible="3" %)
821 +(((
774 774  For example, in US915 band, the max payload for different DR is:
775 775  )))
776 776  )))
825 +)))
777 777  
778 778  (% _mstvisible="1" %)
779 779  (((
... ... @@ -780,9 +780,11 @@
780 780  (% _mstvisible="2" %)
781 781  (((
782 782  (% _msthash="736725" _msttexthash="1065532" _mstvisible="3" %)
832 +(((
783 783  a) DR0: max is 11 bytes so one entry of data
784 784  )))
785 785  )))
836 +)))
786 786  
787 787  (% _mstvisible="1" %)
788 788  (((
... ... @@ -789,9 +789,11 @@
789 789  (% _mstvisible="2" %)
790 790  (((
791 791  (% _msthash="736726" _msttexthash="3265665" _mstvisible="3" %)
843 +(((
792 792  b) DR1: max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
793 793  )))
794 794  )))
847 +)))
795 795  
796 796  (% _mstvisible="1" %)
797 797  (((
... ... @@ -798,9 +798,11 @@
798 798  (% _mstvisible="2" %)
799 799  (((
800 800  (% _msthash="736727" _msttexthash="1454115" _mstvisible="3" style="text-align: left;" %)
854 +(((
801 801  c) DR2: total payload includes 11 entries of data
802 802  )))
803 803  )))
858 +)))
804 804  
805 805  (% _mstvisible="1" %)
806 806  (((
... ... @@ -807,9 +807,11 @@
807 807  (% _mstvisible="2" %)
808 808  (((
809 809  (% _msthash="736728" _msttexthash="1483924" _mstvisible="3" style="text-align: left;" %)
865 +(((
810 810  d) DR3: total payload includes 22 entries of data.
811 811  )))
812 812  )))
869 +)))
813 813  
814 814  (% _mstvisible="1" %)
815 815  (((
... ... @@ -816,9 +816,11 @@
816 816  (% _mstvisible="2" %)
817 817  (((
818 818  (% _msthash="736729" _msttexthash="5848349" _mstvisible="3" style="text-align: left;" %)
876 +(((
819 819  If devise doesn’t have any data in the polling time. Device will uplink 11 bytes of 0   
820 820  )))
821 821  )))
880 +)))
822 822  
823 823  
824 824  (% _mstvisible="1" style="text-align: left;" %)
... ... @@ -864,28 +864,44 @@
864 864  [[image:image-20220523001219-13.png||_mstalt="451204" _mstvisible="3" height="421" style="text-align:left" width="727"]]
865 865  
866 866  (% _msthash="315271" _msttexthash="12012546" _mstvisible="1" style="text-align: left;" %)
926 +(((
867 867  7FFF089801464160065F977FFF088E014B41600660097FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
928 +)))
868 868  
869 869  (% _msthash="315237" _msttexthash="1385839" %)
931 +(((
870 870  Where the first 11 bytes is for the first entry:
933 +)))
871 871  
872 872  (% _msthash="315238" _msttexthash="274846" %)
936 +(((
873 873  7FFF089801464160065F97
938 +)))
874 874  
875 875  (% _msthash="315239" _msttexthash="617435" %)
941 +(((
876 876  Ext sensor data=0x7FFF/100=327.67
943 +)))
877 877  
878 878  (% _msthash="315240" _msttexthash="270543" %)
946 +(((
879 879  Temp=0x0898/100=22.00
948 +)))
880 880  
881 881  (% _msthash="315241" _msttexthash="211783" %)
951 +(((
882 882  Hum=0x0146/10=32.6
953 +)))
883 883  
884 884  (% _msthash="315242" _msttexthash="1569776" %)
956 +(((
885 885  poll message flag & Ext=0x41,means reply data,Ext=1
958 +)))
886 886  
887 887  (% _msthash="315243" _msttexthash="1120509" %)
961 +(((
888 888  Unix time is 0x60065F97=1611030423s=21/1/19 04:27:03
963 +)))
889 889  
890 890  
891 891