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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 188.1
edited by Edwin Chen
on 2022/07/03 11:17
Change comment: There is no comment for this version

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1 +XWiki.Edwin
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61 61  
62 62  
63 63  
64 -
65 65  == 1.3 Specification ==
66 66  
67 67  
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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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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  
495 +For example:
497 497  
497 +AT+EXT=6,1000 will power this sensor for 1000ms before sampling the ADC value.
498 498  
499 +
500 +Or use **downlink command A2** to set the same.
501 +
502 +The measuring range of the node is only about 0.1V to 1.1V The voltage resolution is about 0.24mv.
503 +
504 +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.
505 +
506 +[[image:image-20220628150112-1.png||height="241" width="285"]]
507 +
508 +
509 +When ADC_IN1 pin is connected to GND or suspended, ADC value is 0
510 +
511 +[[image:image-20220628150714-4.png]]
512 +
513 +
514 +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.
515 +
516 +1) The minimum range is about 0.1V. Each chip has internal calibration, so this value is close to 0.1V
517 +
518 +[[image:image-20220628151005-5.png]]
519 +
520 +
521 +2) The maximum range is about 1.1V. Each chip has internal calibration, so this value is close to 1.1v
522 +
523 +[[image:image-20220628151056-6.png]]
524 +
525 +
526 +3) Within range
527 +
528 +[[image:image-20220628151143-7.png]]
529 +
530 +
531 +
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.
591 +1. IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specifying time range.
592 +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  
594 +Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
561 561  
596 +[[image:image-20220703111700-2.png||height="381" width="1119"]]
562 562  
563 563  
564 564  === 2.6.2 Unix TimeStamp ===
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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
1070 +**1m long breakout cable for LHT65N. Features:**
1036 1036  
1072 +* (((
1073 +Use for AT Command， works for both LHT52/LHT65N
1074 +)))
1075 +* (((
1076 +Update firmware for LHT65N, works for both LHT52/LHT65N
1077 +)))
1078 +* (((
1079 +Supports ADC mode to monitor external ADC
1080 +)))
1081 +* (((
1082 +Supports Interrupt mode
1083 +)))
1084 +* (((
1085 +Exposed All pins from the LHT65N Type-C connector.
1086 +)))
1087 +
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  
1773 +== 6.6 Using USB-TYPE-C to connect to the computer using the AT command ==
1722 1722  
1775 +[[image:image-20220623110706-1.png]]
1776 +
1777 +
1778 +[[image:image-20220623112117-4.png||height="459" width="343"]]
1779 +
1780 +(((
1781 +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.
1782 +)))
1783 +
1784 +
1785 +Input password and ATZ to activate LHT65N,As shown below:
1786 +
1787 +[[image:image-20220615154519-3.png||height="672" width="807"]]
1788 +
1789 +
1790 +== 6.7 How to use  USB-TYPE-C to connect PC to upgrade firmware? ==
1791 +
1792 +[[image:image-20220623110706-1.png]]
1793 +
1794 +(% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
1795 +
1796 +[[image:image-20220615170542-5.png]]
1797 +
1798 +
1799 +(% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
1800 +
1801 +(% _msthash="506146" _msttexthash="52173160" %)
1802 +First connect the four lines；
1803 +
1804 +(% _msthash="506146" _msttexthash="52173160" %)
1805 +[[image:image-20220623113959-5.png||height="528" width="397"]]
1806 +
1807 +(% _msthash="506146" _msttexthash="52173160" %)
1808 +Press and hold the start key to restart and enter  (% _mstvisible="1" %)bootlaod(%%) mode.
1809 +
1810 +(% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1811 +
1812 +[[image:image-20220615171334-6.png]]
1813 +
1814 +
1815 +Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1816 +
1817 +
1818 +When this interface appears, it indicates that the download has been completed.
1819 +
1820 +[[image:image-20220620160723-8.png]]
1821 +
1822 +
1823 +Finally,restart reset device again
1824 +
1825 +
1723 1723  = 7. Order Info =
1724 1724  
1725 1725  
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