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Last modified by Xiaoling on 2023/07/18 10:12
From version 225.2
edited by Xiaoling
on 2022/12/10 09:35
Change comment: There is no comment for this version
To version 228.4
edited by Xiaoling
on 2023/02/17 09:28
Change comment: There is no comment for this version

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... ... @@ -46,7 +46,6 @@
46 46  == 1.2 Features ==
47 47  
48 48  
49 -* Wall mountable
50 50  * LoRaWAN v1.0.3 Class A protocol
51 51  * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915
52 52  * AT Commands to change parameters
... ... @@ -317,11 +317,16 @@
317 317  
318 318  * External temperature= (0xF54F-65536)/100=-27.37℃
319 319  
319 +F54F :  (F54F & 8000 == 1) , temp = (F54F - 65536)/100 = 27.37℃
320 +
321 +（0105 & 8000：Judge whether the highest bit is 1, when the highest bit is 1, it is negative）
322 +
320 320  The last 2 bytes of data are meaningless
321 321  
322 322  If the external sensor is 0x01, and there is no external temperature connected. The temperature will be set to 7FFF which is 327.67℃
323 323  
324 324  
328 +
325 325  ==== 2.4.6.2 Ext~=9, E3 sensor with Unix Timestamp ====
326 326  
327 327  
... ... @@ -435,6 +435,7 @@
435 435  [[image:image-20220628151143-7.png||_mstalt="431210"]]
436 436  
437 437  
442 +
438 438  ==== 2.4.6.4 Ext~=2 TMP117 Sensor （Since Firmware v1.3） ====
439 439  
440 440  
... ... @@ -451,6 +451,7 @@
451 451  The external cable NE2 can be use for MOD4 and MOD8
452 452  
453 453  
459 +
454 454  ==== 2.4.6.5 Ext~=4 Interrupt Mode （Since Firmware v1.3） ====
455 455  
456 456  
... ... @@ -497,6 +497,7 @@
497 497  [[image:image-20220906101145-3.png||_mstalt="428688"]]
498 498  
499 499  
506 +
500 500  ==== 2.4.6.6 Ext~=8 Counting Mode（Since Firmware v1.3） ====
501 501  
502 502  
... ... @@ -864,6 +864,7 @@
864 864  
865 865  ==== **Sampling multiple times and uplink together** ====
866 866  
874 +
867 867  **AT+WMOD=3,1,60,20,-16,32,1**   
868 868  
869 869  Explain:
... ... @@ -1589,7 +1589,6 @@
1589 1589  **Downlink commands:**
1590 1590  
1591 1591  
1592 -
1593 1593  (% style="color:blue" %)**TTN:**
1594 1594  
1595 1595  [[image:image-20220615092124-2.png||_mstalt="429221" height="649" width="688"]]
... ... @@ -1688,6 +1688,12 @@
1688 1688  [[image:image-20220623110706-1.png||_mstalt="427869"]]
1689 1689  
1690 1690  
1698 +**UART Port of LHT65N:**
1699 +
1700 +* (% class="mark" %)**PB0: RXD**
1701 +* (% class="mark" %)**PB1: TXD**
1702 +* (% class="mark" %)**GND**
1703 +
1691 1691  [[image:image-20220623112117-4.png||_mstalt="428350" height="459" width="343"]]
1692 1692  
1693 1693