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Last modified by Xiaoling on 2023/07/18 10:12
From version 176.1
edited by Bei Jinggeng
on 2022/06/23 11:43
Change comment: There is no comment for this version
To version 189.7
edited by Xiaoling
on 2022/07/22 11:10
Change comment: There is no comment for this version

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Author
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1 -XWiki.Bei
1 +XWiki.Xiaoling
Content
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60 60  
61 61  
62 62  
63 -
64 64  == 1.3 Specification ==
65 65  
66 66  
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87 87  
88 88  
89 89  
90 -
91 91  = 2. Connect LHT65N to IoT Server =
92 92  
93 93  == 2.1 How does LHT65N work? ==
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166 166  [[image:image-20220522232954-5.png||_mstalt="431847" _mstvisible="3"]]
167 167  
168 168  
169 -Note: LHT65N use same payload as LHT65.
170 170  
168 +(% style="color:red" %)**Note: LHT65N use same payload as LHT65.**
171 171  
170 +
172 172  [[image:image-20220522233026-6.png||_mstalt="429403" _mstvisible="3"]]
173 173  
174 174  
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267 267  
268 268  * The First 6 bytes: has fix meanings for every LHT65N.
269 269  * The 7th byte (EXT #): defines the external sensor model.
270 -* 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 +* 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.)
271 271  
272 272  
273 273  
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469 469  
470 470  * (% _msthash="504956" _msttexthash="245037" _mstvisible="4" %)**Status & Ext Byte**
471 471  
472 -[[image:image-20220523152434-16.png||_mstalt="453921" _mstvisible="3"]]
471 +(% border="1" cellspacing="8" style="background-color:#ffffcc; color:green; width:520px" %)
472 +|(% style="width:60px" %)**Bits**|(% style="width:90px" %)**7**|(% style="width:100px" %)**6**|(% style="width:90px" %)**5**|(% style="width:100px" %)**4**|(% style="width:60px" %)**[3:0]**
473 +|(% style="width:96px" %)**Status&Ext**|(% style="width:124px" %)None-ACK Flag|(% style="width:146px" %)Poll Message FLAG|(% style="width:109px" %)Sync time OK|(% style="width:143px" %)Unix Time Request|(% style="width:106px" %)Ext: 0b(1001)
473 473  
474 -* Poll Message Flag:  1: This message is a poll message reply, 0: means this is a normal uplink.
475 -* 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.
476 -* 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)
475 +* (% style="color:blue" %)**Poll Message Flag**:(%%)  1: This message is a poll message reply, 0: means this is a normal uplink.
476 +* (% style="color:blue" %)**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.
477 +* (% style="color:blue" %)**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)
477 477  
478 478  
479 479  
481 +
480 480  ==== 2.4.6.3 Ext~=6, ADC Sensor (use with E2 Cable) ====
481 481  
482 482  In this mode, user can connect external ADC sensor to check ADC value. The 3V3_OUT can
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487 487  
488 488  AT+EXT=6,timeout  (% _msthash="506085" _msttexthash="8782189" _mstvisible="3" style="color:red" %)Time to power this sensor, from 0 ~~ 65535ms
489 489  
492 +For example:
490 490  
494 +AT+EXT=6,1000 will power this sensor for 1000ms before sampling the ADC value.
491 491  
496 +
497 +Or use **downlink command A2** to set the same.
498 +
499 +The measuring range of the node is only about 0.1V to 1.1V The voltage resolution is about 0.24mv.
500 +
501 +When the measured output voltage of the sensor is not within the range of 0.1V and 1.1V, the output voltage terminal of the sensor shall be divided The example in the following figure is to reduce the output voltage of the sensor by three times If it is necessary to reduce more times, calculate according to the formula in the figure and connect the corresponding resistance in series.
502 +
503 +[[image:image-20220628150112-1.png||height="241" width="285"]]
504 +
505 +
506 +When ADC_IN1 pin is connected to GND or suspended, ADC value is 0
507 +
508 +[[image:image-20220628150714-4.png]]
509 +
510 +
511 +When the voltage collected by ADC_IN1 is less than the minimum range, the minimum range will be used as the output; Similarly, when the collected voltage is greater than the maximum range, the maximum range will be used as the output.
512 +
513 +1) The minimum range is about 0.1V. Each chip has internal calibration, so this value is close to 0.1V
514 +
515 +[[image:image-20220628151005-5.png]]
516 +
517 +
518 +2) The maximum range is about 1.1V. Each chip has internal calibration, so this value is close to 1.1v
519 +
520 +[[image:image-20220628151056-6.png]]
521 +
522 +
523 +3) Within range
524 +
525 +[[image:image-20220628151143-7.png]]
526 +
527 +
528 +
492 492  == 2.5 Show data on Datacake ==
493 493  
494 494  (((
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548 548  
549 549  There are two methods:
550 550  
551 -1. IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specify time range.
552 -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.
588 +1. IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specifying time range.
589 +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 the network recovery.
553 553  
591 +Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
554 554  
593 +[[image:image-20220703111700-2.png||height="381" width="1119"]]
555 555  
595 +
556 556  === 2.6.2 Unix TimeStamp ===
557 557  
558 558  
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993 993  )))
994 994  )))
995 995  
1036 +(% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
996 996  
1038 +Total bytes: 8 bytes
997 997  
1040 +**Example:**AA0100010001003C
1041 +
1042 +WMOD=01
1043 +
1044 +CITEMP=0001
1045 +
1046 +TEMPlow=0001
1047 +
1048 +TEMPhigh=003C
1049 +
1050 +
998 998  == 2.8 LED Indicator ==
999 999  
1000 1000  The LHT65 has a triple color LED which for easy showing different stage .
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1023 1023  
1024 1024  [[image:image-20220619092222-1.png||height="182" width="188"]][[image:image-20220619092313-2.png||height="182" width="173"]]
1025 1025  
1026 -1m long breakout cable for LHT65N
1079 +**1m long breakout cable for LHT65N. Features:**
1027 1027  
1081 +* (((
1082 +Use for AT Command， works for both LHT52/LHT65N
1083 +)))
1084 +* (((
1085 +Update firmware for LHT65N, works for both LHT52/LHT65N
1086 +)))
1087 +* (((
1088 +Supports ADC mode to monitor external ADC
1089 +)))
1090 +* (((
1091 +Supports Interrupt mode
1092 +)))
1093 +* (((
1094 +Exposed All pins from the LHT65N Type-C connector.
1095 +)))
1096 +
1028 1028  [[image:image-20220619092421-3.png||height="371" width="529"]]
1029 1029  
1030 1030  
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1720 1720  [[image:image-20220615154519-3.png||height="672" width="807"]]
1721 1721  
1722 1722  
1723 -== 6.6 How to use  USB-TYPE-C to connect PC to upgrade firmware? ==
1792 +== 6.7 How to use  USB-TYPE-C to connect PC to upgrade firmware? ==
1724 1724  
1725 1725  [[image:image-20220623110706-1.png]]
1726 1726  
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