Last modified by Edwin Chen on 2022/11/22 09:38
<
From version < 19.4 >
edited by Xiaoling
on 2022/11/15 09:14
To version < 25.1 >
edited by Edwin Chen
on 2022/11/19 09:37
>
Change comment: There is no comment for this version

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Author
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1 -XWiki.Xiaoling
1 +XWiki.Edwin
Content
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11 11  
12 12  
13 13  Shipped LT-22222-L is base on LoRaWAN protocol. We also develop a open source Point to Point LoRa protocol for LT-22222-L. The source code and hex file can be found at:
14 -)))
15 15  
16 -(((
17 -[[Point to Point Software for LT-22222-L>>https://github.com/dragino/LT-22222-L]].
15 +* [[Source Code>>https://github.com/dragino/LT-22222-L]].
16 +* [[Firmware>>https://github.com/dragino/LT-22222-L/releases]].
18 18  )))
19 19  
20 -
21 21  = 2. Features for this firmware =
22 22  
23 23  == 2.1  Point To Point ==
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43 43  |(% style="width:179px" %)AT+DI2TODO2=2 |(% style="width:177px" %)AT+DI2TODO2=2
44 44  |(% style="width:179px" %)AT+DI2TORO2=2|(% style="width:177px" %)AT+DI2TORO2=2
45 45  
46 -
47 -
48 48  === 2.2.3 Serial port display ===
49 49  
50 50  
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372 372  )))
373 373  
374 374  
375 -=== 2.3.1 TRIG command is configured in the transmit LT. (LT1)(Since firmware 1.3) ===
371 +=== 2.3.1 TRIG command is configured in the transmit LT. (LT1)(Since firmware 1.3.2) ===
376 376  
377 377  
378 378  **AT+TRIGx=a          **Trigger transmit directly without triggering time
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404 404  
405 405  **Command:**
406 406  
407 -**AT+TRIG2=2,50,60**  Once there is falling edge or rising edge on DI2 of LT1, LT1 will transmit trigger to LT2 and LT2 can sync the status of RO/DO.
403 +**AT+TRIG2=2,50,60**  Once there is falling edge or rising edge on DI2 of LT1, LT1 will transmit trigger to LT2 and LT2 can sync the status of RO/DO. After power off, power on, LT1 will send trigger without falling/rising edge, so the DI changes during power off will be sync as well.
408 408  
409 409  
410 -=== 2.3.2 RO/DO is configured in the receiver LT (LT2)(Since firmware 1.3) ===
406 +=== 2.3.2 RO/DO is configured in the receiver LT (LT2)(Since firmware 1.3.2) ===
411 411  
412 412  
413 -AT+DI1TODO1= maps value[,latch time]
409 +AT+DI1TODO1= maps value[,latch time, timeout_state]
414 414  
415 -AT+DI1TORO1= maps value[,latch time]
411 +AT+DI1TORO1= maps value[,latch time, timeout_state]
416 416  
417 -AT+DI2TODO2= maps value[,latch time]
413 +AT+DI2TODO2= maps value[,latch time, timeout_state]
418 418  
419 -AT+DI2TORO2= maps value[,latch time]
415 +AT+DI2TORO2= maps value[,latch time, timeout_state]
420 420  
421 421  
422 422  (% border="1" style="background-color:#f7faff; color:black; width:774px" %)
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434 434  )))
435 435  |(% style="width:105px" %)3|(% style="width:415px" %)DOx state flip|(% style="width:249px" %)ROx state flip
436 436  
437 -latch time, if latch time is defined, DO or RO will go back to the original status after latch time, if there is a new trigger comes, the LT2 will use the new latch time settings and ignore the old one.
433 +**latch time**, if latch time is defined, DO or RO will go back to the original status after latch time, if there is a new trigger comes, the LT2 will use the new latch time settings and ignore the old one.
438 438  
439 439  
436 +**Timeout_State**:
437 +
438 +0: **No change** after timeout
439 +
440 +1: Change to **DO:0** or **RO: Open** after timeout
441 +
442 +2: Change to **DO:1** or **RO: Close** after timeout
443 +
444 +3: Change **back to state** before last trigger arrive.
445 +
446 +
440 440  (% style="color:blue" %)**Case1**:
441 441  
442 442  AT+DI1TODO1=1  ~/~/ LT2 DO1 will follow LT1 DI1 trigger command, if DI1 of LT1 is trigger high, DO1 of LT2 will output low, if DI1 of LT1 is trigger low, DO2 of LT2 will output high.
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444 444  
445 445  (% style="color:blue" %)**Case2**:
446 446  
447 -AT+DI1TODO1=1,60  ~/~/ LT2 DO1 will follow LT1 DI1 trigger command, DO1 will keep the status 60 seconds and then go back to original state.
454 +AT+DI1TODO1=1,60,1  ~/~/ LT2 DO1 will follow LT1 DI1 trigger command, DO1 will keep the status 60 seconds and then change to open.
448 448  
449 449  
450 450  === 2.3.3 Save the RO/DO status during power off(Since firmware 1.3) ===
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483 483  
484 484  When DI2 is enabled as sleep pin, a falling trigger (with 500ms pulse) will set LT into sleep mode. A raising trigger will wake up it again.
485 485  
493 +In sleep mode, DORO will keep its initial state if AT+DOROSAVE=2, otherwise DORO will be in OFF state
486 486  
495 +
487 487  == 2.4 Data Format ==
488 488  
489 489  
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492 492  )))
493 493  
494 494  (((
495 -(% style="color:blue" %)**Payload:**
504 +(% style="color:blue" %)**Payload:Payload triggered by TDC or DI**
496 496  )))
497 497  
498 498  (% border="1" style="background-color:#f7faff; color:black; width:825px" %)
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623 623  ACK
624 624  )))|(% style="width:85px" %)(((
625 625  (((
626 -DO1&
627 -DO1 level
635 +DOI1&
636 +DOI2 level
628 628  )))
629 629  )))|(% style="width:90px" %)(((
630 630  DI1TODO1
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655 655  
656 656  (((
657 657  (((
658 -(% style="color:#037691" %)**The fourth byte**(%%)**:**  the high four bits are 1 to represent DO1, and the low four bits are the level of DO1 when the interrupt is triggered.
667 +(% style="color:#037691" %)**The fourth byte**(%%)**:**  the high four bits are 1 to represent DOI1, and the low four bits are the level of DOI2 when the interrupt is triggered.
659 659  )))
660 660  )))
661 661  

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