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Last modified by Xiaoling on 2023/07/18 10:12
From version 170.26
edited by Xiaoling
on 2022/06/22 11:16
Change comment: There is no comment for this version
To version 170.29
edited by Xiaoling
on 2022/06/22 11:21
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  
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85 85  * Operating Range: -55 °C ~~ 125 °C
86 86  
87 87  
88 -
89 -
90 90  = 2. Connect LHT65N to IoT Server =
91 91  
92 92  == 2.1 How does LHT65N work? ==
93 93  
91 +(((
94 94  LHT65N is configured as LoRaWAN OTAA Class A mode by default. Each LHT65N is shipped with a worldwide unique set of OTAA keys. To use LHT65N in a LoRaWAN network, first, we need to put the OTAA keys in LoRaWAN Network Server and then activate LHT65N.
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95 95  
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96 96  If LHT65N is under the coverage of this LoRaWAN network. LHT65N can join the LoRaWAN network automatically. After successfully joining, LHT65N will start to measure environment temperature and humidity, and start to transmit sensor data to the LoRaWAN server. The default period for each uplink is 20 minutes.
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97 97  
98 98  
99 99  == 2.2 How to Activate LHT65N? ==
100 100  
102 +(((
101 101  The LHT65N has two working modes:
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102 102  
103 -* (% style="color:blue" %)**Deep Sleep Mode**(%%): LHT65N doesn’t have any LoRaWAN activation. This mode is used for storage and shipping to save battery life.
104 -* (% style="color:blue" %)**Working Mode**(%%):  In this mode, LHT65N works as LoRaWAN Sensor mode to Join LoRaWAN network and send out the sensor data to the server. Between each sampling/tx/rx periodically, LHT65N will be in STOP mode (IDLE mode), in STOP mode, LHT65N has the same power consumption as Deep Sleep mode. 
106 +* (((
107 +(% style="color:blue" %)**Deep Sleep Mode**(%%): LHT65N doesn’t have any LoRaWAN activation. This mode is used for storage and shipping to save battery life.
108 +)))
109 +* (((
110 +(% style="color:blue" %)**Working Mode**(%%):  In this mode, LHT65N works as LoRaWAN Sensor mode to Join LoRaWAN network and send out the sensor data to the server. Between each sampling/tx/rx periodically, LHT65N will be in STOP mode (IDLE mode), in STOP mode, LHT65N has the same power consumption as Deep Sleep mode. 
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105 105  
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106 106  The LHT65N is set in deep sleep mode by default; The ACT button on the front is to switch to different modes:
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107 107  
108 108  
109 109  [[image:image-20220515123819-1.png||_mstalt="430742" _mstvisible="3" height="379" width="317"]]
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257 257  * 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.)
258 258  
259 259  
269 +
270 +
271 +
260 260  === 2.4.1 Decoder in TTN V3 ===
261 261  
262 262  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.
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287 287  * BAT status=(0Xcba4>>14)&0xFF=11(B)，very good
288 288  * Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV
289 289  
302 +
303 +
304 +
305 +
290 290  === 2.4.3 Built-in Temperature ===
291 291  
292 292  [[image:image-20220522235639-2.png||_mstalt="431756" _mstvisible="3" height="138" width="722"]]
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297 297  
298 298  * Temperature:  (0xF5C6-65536)/100=-26.18℃
299 299  
316 +
317 +
318 +
319 +
300 300  === 2.4.4 Built-in Humidity ===
301 301  
302 302  [[image:image-20220522235639-4.png||_mstalt="432484" _mstvisible="3" height="138" width="722"]]
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303 303  
304 304  * Humidity:    0x025C/10=60.4%
305 305  
326 +
327 +
328 +
329 +
306 306  === 2.4.5 Ext # ===
307 307  
308 308  Bytes for External Sensor:
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455 455  * 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.
456 456  * 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)
457 457  
482 +
483 +
484 +
485 +
458 458  ==== 2.4.6.3 Ext~=6, ADC Sensor (use with E2 Cable) ====
459 459  
460 460  In this mode, user can connect external ADC sensor to check ADC value. The 3V3_OUT can
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530 530  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.
531 531  
532 532  
561 +
562 +
563 +
533 533  === 2.6.2 Unix TimeStamp ===
534 534  
535 535  
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552 552  
553 553  === 2.6.3 Set Device Time ===
554 554  
586 +(((
555 555  There are two ways to set device's time:
588 +)))
556 556  
590 +(((
557 557  **~1. Through LoRaWAN MAC Command (Default settings)**
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558 558  
594 +(((
559 559  User need to set SYNCMOD=1 to enable sync time via MAC command.
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560 560  
598 +(((
561 561  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).
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562 562  
602 +(((
563 563  (% 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.
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564 564  
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607 +
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565 565  
610 +(((
566 566  **2. Manually Set Time**
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567 567  
614 +(((
568 568  User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
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569 569  
570 570  
571 571  
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917 917  * RED LED when external sensor is not connected
918 918  * For each success downlink, the PURPLE LED will blink once
919 919  
920 -
921 921  == 2.9 installation ==
922 922  
923 923  (% _mstvisible="1" %)
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952 952  * Operating Range: -40 ~~ 125 °C
953 953  * Working voltage 2.35v ~~ 5v
954 954  
955 -
956 956  = 4. Configure LHT65N via AT command or LoRaWAN downlink =
957 957  
958 958  Use can configure LHT65N via AT Command or LoRaWAN Downlink.
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1090 1090  
1091 1091  * There is no downlink command to set to Sleep mode.
1092 1092  
1093 -
1094 1094  == 4.7 Set system time ==
1095 1095  
1096 1096  Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
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1187 1187  
1188 1188  * Example: 0xA301 ~/~/Same as AT+CLRDTA
1189 1189  
1190 -
1191 1191  == 4.13 Auto Send None-ACK messages ==
1192 1192  
1193 1193  (% _msthash="315394" _msttexthash="51837149" _mstvisible="1" %)
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1611 1611  
1612 1612  * (% style="color:red" %)**E3**(%%): External Temperature Probe
1613 1613  
1614 -
1615 1615  = 8. Packing Info =
1616 1616  
1617 1617