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Last modified by Xiaoling on 2023/07/18 10:12
From version 189.6
edited by Xiaoling
on 2022/07/22 10:36
Change comment: There is no comment for this version
To version 175.1
edited by Bei Jinggeng
on 2022/06/23 11:40
Change comment: Uploaded new attachment "image-20220623113959-5.png", version {1}

Summary

Details

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Author
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1 -XWiki.Xiaoling
1 +XWiki.Bei
Content
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61 61  
62 62  
63 63  
64 +
64 64  == 1.3 Specification ==
65 65  
66 66  
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88 88  
89 89  
90 90  
92 +
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  
171 +Note: LHT65N use same payload as LHT65.
169 169  
170 -(% style="color:red" %)**Note: LHT65N use same payload as LHT65.**
171 171  
172 -
173 173  [[image:image-20220522233026-6.png||_mstalt="429403" _mstvisible="3"]]
174 174  
175 175  
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272 272  
273 273  
274 274  
276 +
275 275  === 2.4.1 Decoder in TTN V3 ===
276 276  
277 277  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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304 304  
305 305  
306 306  
309 +
307 307  === 2.4.3 Built-in Temperature ===
308 308  
309 309  [[image:image-20220522235639-2.png||_mstalt="431756" _mstvisible="3" height="138" width="722"]]
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316 316  
317 317  
318 318  
322 +
319 319  === 2.4.4 Built-in Humidity ===
320 320  
321 321  [[image:image-20220522235639-4.png||_mstalt="432484" _mstvisible="3" height="138" width="722"]]
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324 324  
325 325  
326 326  
331 +
327 327  === 2.4.5 Ext # ===
328 328  
329 329  Bytes for External Sensor:
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470 470  
471 471  * (% _msthash="504956" _msttexthash="245037" _mstvisible="4" %)**Status & Ext Byte**
472 472  
473 -(% border="1" cellspacing="8" style="background-color:#ffffcc; color:green; width:520px" %)
474 -|(% 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]**
475 -|(% 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)
478 +[[image:image-20220523152434-16.png||_mstalt="453921" _mstvisible="3"]]
476 476  
477 -* (% style="color:blue" %)**Poll Message Flag**:(%%)  1: This message is a poll message reply, 0: means this is a normal uplink.
478 -* (% 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.
479 -* (% 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)
480 +* Poll Message Flag:  1: This message is a poll message reply, 0: means this is a normal uplink.
481 +* 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.
482 +* 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)
480 480  
481 481  
485 +
486 +
482 482  ==== 2.4.6.3 Ext~=6, ADC Sensor (use with E2 Cable) ====
483 483  
484 484  In this mode, user can connect external ADC sensor to check ADC value. The 3V3_OUT can
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489 489  
490 490  AT+EXT=6,timeout  (% _msthash="506085" _msttexthash="8782189" _mstvisible="3" style="color:red" %)Time to power this sensor, from 0 ~~ 65535ms
491 491  
492 -For example:
493 493  
494 -AT+EXT=6,1000 will power this sensor for 1000ms before sampling the ADC value.
495 495  
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 -
529 529  == 2.5 Show data on Datacake ==
530 530  
531 531  (((
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585 585  
586 586  There are two methods:
587 587  
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.
558 +1. IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specify time range.
559 +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.
590 590  
591 -Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
592 592  
593 -[[image:image-20220703111700-2.png||height="381" width="1119"]]
594 594  
595 595  
596 596  === 2.6.2 Unix TimeStamp ===
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1033 1033  )))
1034 1034  )))
1035 1035  
1036 -(% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
1037 1037  
1038 -Total bytes: 8 bytes
1039 1039  
1040 -**Example:**AA0100010001003C
1041 -
1042 -WMOD=01
1043 -
1044 -CITEMP=0001
1045 -
1046 -TEMPlow=0001
1047 -
1048 -TEMPhigh=003C
1049 -
1050 -
1051 1051  == 2.8 LED Indicator ==
1052 1052  
1053 1053  The LHT65 has a triple color LED which for easy showing different stage .
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1077 1077  
1078 1078  [[image:image-20220619092222-1.png||height="182" width="188"]][[image:image-20220619092313-2.png||height="182" width="173"]]
1079 1079  
1080 -**1m long breakout cable for LHT65N. Features:**
1035 +1m long breakout cable for LHT65N
1081 1081  
1082 -* (((
1083 -Use for AT Command， works for both LHT52/LHT65N
1084 -)))
1085 -* (((
1086 -Update firmware for LHT65N, works for both LHT52/LHT65N
1087 -)))
1088 -* (((
1089 -Supports ADC mode to monitor external ADC
1090 -)))
1091 -* (((
1092 -Supports Interrupt mode
1093 -)))
1094 -* (((
1095 -Exposed All pins from the LHT65N Type-C connector.
1096 -)))
1097 -
1098 1098  [[image:image-20220619092421-3.png||height="371" width="529"]]
1099 1099  
1100 1100  
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1780 1780  Finally, unplug the DuPont cable on port4, and then use the DuPont cable to short circuit port3 and port1 to reset the device.
1781 1781  
1782 1782  
1783 -== 6.6 Using USB-TYPE-C to connect to the computer using the AT command ==
1784 1784  
1785 -[[image:image-20220623110706-1.png]]
1786 -
1787 -
1788 -[[image:image-20220623112117-4.png||height="459" width="343"]]
1789 -
1790 -(((
1791 -In PC, User needs to set serial tool(such as [[**putty**>>https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]], SecureCRT) baud rate to (% style="color:green" %)**9600** (%%)to access to access serial console for LHT65N. The AT commands are disable by default and need to enter password (default:(% style="color:green" %)**123456**(% style="color:red" %))(%%) to active it. Timeout to input AT Command is 5 min, after 5-minute, user need to input password again. User can use AT+DISAT command to disable AT command before timeout.
1792 -)))
1793 -
1794 -
1795 -Input password and ATZ to activate LHT65N,As shown below:
1796 -
1797 -[[image:image-20220615154519-3.png||height="672" width="807"]]
1798 -
1799 -
1800 -== 6.7 How to use  USB-TYPE-C to connect PC to upgrade firmware? ==
1801 -
1802 -[[image:image-20220623110706-1.png]]
1803 -
1804 -(% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
1805 -
1806 -[[image:image-20220615170542-5.png]]
1807 -
1808 -
1809 -(% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
1810 -
1811 -(% _msthash="506146" _msttexthash="52173160" %)
1812 -First connect the four lines；
1813 -
1814 -(% _msthash="506146" _msttexthash="52173160" %)
1815 -[[image:image-20220623113959-5.png||height="528" width="397"]]
1816 -
1817 -(% _msthash="506146" _msttexthash="52173160" %)
1818 -Press and hold the start key to restart and enter  (% _mstvisible="1" %)bootlaod(%%) mode.
1819 -
1820 -(% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1821 -
1822 -[[image:image-20220615171334-6.png]]
1823 -
1824 -
1825 -Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1826 -
1827 -
1828 -When this interface appears, it indicates that the download has been completed.
1829 -
1830 -[[image:image-20220620160723-8.png]]
1831 -
1832 -
1833 -Finally,restart reset device again
1834 -
1835 -
1836 1836  = 7. Order Info =
1837 1837  
1838 1838  
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