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Last modified by Xiaoling on 2023/07/18 10:12
From version 174.1
edited by Bei Jinggeng
on 2022/06/23 11:21
Change comment: Uploaded new attachment "image-20220623112117-4.png", version {1}
To version 189.6
edited by Xiaoling
on 2022/07/22 10:36
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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61 61  
62 62  
63 63  
64 -
65 65  == 1.3 Specification ==
66 66  
67 67  
... ... @@ -89,7 +89,6 @@
89 89  
90 90  
91 91  
92 -
93 93  = 2. Connect LHT65N to IoT Server =
94 94  
95 95  == 2.1 How does LHT65N work? ==
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168 168  [[image:image-20220522232954-5.png||_mstalt="431847" _mstvisible="3"]]
169 169  
170 170  
171 -Note: LHT65N use same payload as LHT65.
172 172  
170 +(% style="color:red" %)**Note: LHT65N use same payload as LHT65.**
173 173  
172 +
174 174  [[image:image-20220522233026-6.png||_mstalt="429403" _mstvisible="3"]]
175 175  
176 176  
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273 273  
274 274  
275 275  
276 -
277 277  === 2.4.1 Decoder in TTN V3 ===
278 278  
279 279  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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306 306  
307 307  
308 308  
309 -
310 310  === 2.4.3 Built-in Temperature ===
311 311  
312 312  [[image:image-20220522235639-2.png||_mstalt="431756" _mstvisible="3" height="138" width="722"]]
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319 319  
320 320  
321 321  
322 -
323 323  === 2.4.4 Built-in Humidity ===
324 324  
325 325  [[image:image-20220522235639-4.png||_mstalt="432484" _mstvisible="3" height="138" width="722"]]
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328 328  
329 329  
330 330  
331 -
332 332  === 2.4.5 Ext # ===
333 333  
334 334  Bytes for External Sensor:
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475 475  
476 476  * (% _msthash="504956" _msttexthash="245037" _mstvisible="4" %)**Status & Ext Byte**
477 477  
478 -[[image:image-20220523152434-16.png||_mstalt="453921" _mstvisible="3"]]
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)
479 479  
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)
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)
483 483  
484 484  
485 -
486 -
487 487  ==== 2.4.6.3 Ext~=6, ADC Sensor (use with E2 Cable) ====
488 488  
489 489  In this mode, user can connect external ADC sensor to check ADC value. The 3V3_OUT can
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494 494  
495 495  AT+EXT=6,timeout  (% _msthash="506085" _msttexthash="8782189" _mstvisible="3" style="color:red" %)Time to power this sensor, from 0 ~~ 65535ms
496 496  
492 +For example:
497 497  
494 +AT+EXT=6,1000 will power this sensor for 1000ms before sampling the ADC value.
498 498  
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 +
499 499  == 2.5 Show data on Datacake ==
500 500  
501 501  (((
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555 555  
556 556  There are two methods:
557 557  
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.
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.
560 560  
591 +Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
561 561  
593 +[[image:image-20220703111700-2.png||height="381" width="1119"]]
562 562  
563 563  
564 564  === 2.6.2 Unix TimeStamp ===
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1001 1001  )))
1002 1002  )))
1003 1003  
1036 +(% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
1004 1004  
1038 +Total bytes: 8 bytes
1005 1005  
1040 +**Example:**AA0100010001003C
1041 +
1042 +WMOD=01
1043 +
1044 +CITEMP=0001
1045 +
1046 +TEMPlow=0001
1047 +
1048 +TEMPhigh=003C
1049 +
1050 +
1006 1006  == 2.8 LED Indicator ==
1007 1007  
1008 1008  The LHT65 has a triple color LED which for easy showing different stage .
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1032 1032  
1033 1033  [[image:image-20220619092222-1.png||height="182" width="188"]][[image:image-20220619092313-2.png||height="182" width="173"]]
1034 1034  
1035 -1m long breakout cable for LHT65N
1080 +**1m long breakout cable for LHT65N. Features:**
1036 1036  
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 +
1037 1037  [[image:image-20220619092421-3.png||height="371" width="529"]]
1038 1038  
1039 1039  
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1719 1719  Finally, unplug the DuPont cable on port4, and then use the DuPont cable to short circuit port3 and port1 to reset the device.
1720 1720  
1721 1721  
1783 +== 6.6 Using USB-TYPE-C to connect to the computer using the AT command ==
1722 1722  
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 +
1723 1723  = 7. Order Info =
1724 1724  
1725 1725  
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