Last modified by Edwin Chen on 2022/11/22 09:38
<
From version < 21.1 >
edited by Bei Jinggeng
on 2022/11/15 10:28
To version < 16.1 >
edited by Xiaoling
on 2022/06/02 14:53
>
Change comment: There is no comment for this version

Summary

Details

Page properties
Title
... ... @@ -1,1 +1,1 @@
1 -Point to Point Communication of LT-22222-L
1 + Point to Point Communication of LT-22222-L
Author
... ... @@ -1,1 +1,1 @@
1 -XWiki.Bei
1 +XWiki.Xiaoling
Content
... ... @@ -1,15 +1,10 @@
1 -**Table of Contents： **
2 -
1 +{{box cssClass="floatinginfobox" title="**Contents**"}}
3 3  {{toc/}}
3 +{{/box}}
4 4  
5 += **1. Overview** =
5 5  
6 -
7 -
8 -= 1. Overview =
9 -
10 10  (((
11 -
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 14  )))
15 15  
... ... @@ -17,35 +17,39 @@
17 17  [[Point to Point Software for LT-22222-L>>https://github.com/dragino/LT-22222-L]].
18 18  )))
19 19  
15 +== ==
20 20  
21 -= 2. Features for this firmware =
17 += **2. Features for this firmware** =
22 22  
23 -== 2.1  Point To Point ==
24 24  
25 -=== 2.1.1 Overview ===
20 +== **2.1  Point To Point** ==
26 26  
22 +=== **2.1.1 Overview** ===
27 27  
24 +
28 28  [[image:image-20220602111219-1.png||height="472" width="972"]]
29 29  
30 30  
31 -=== 2.2.2 Configure ===
28 +=== **2.2.2 Configure** ===
32 32  
33 33  
34 -(% border="1" style="background-color:#f7faff; color:black; width:360px" %)
35 -|=(% style="width: 179px;" %)**A's configuration**|=(% style="width: 177px;" %)**B's configuration**
36 -|(% style="width:179px" %)AT+GROUPMOD=0|(% style="width:177px" %)AT+GROUPMOD=0
37 -|(% style="width:179px" %)AT+TXCHS=868700000|(% style="width:177px" %)AT+TXCHS=869000000
38 -|(% style="width:179px" %)AT+RXCHS=869000000|(% style="width:177px" %)AT+RXCHS=868700000
39 -|(% style="width:179px" %)AT+TRIG1=2,50|(% style="width:177px" %)AT+TRIG1=2,50
40 -|(% style="width:179px" %)AT+TRIG2=2,50|(% style="width:177px" %)AT+TRIG2=2,50
41 -|(% style="width:179px" %)AT+DI1TODO1=2|(% style="width:177px" %)AT+DI1TODO1=2
42 -|(% style="width:179px" %)AT+DI1TORO1=2|(% style="width:177px" %)AT+DI1TORO1=2
43 -|(% style="width:179px" %)AT+DI2TODO2=2 |(% style="width:177px" %)AT+DI2TODO2=2
44 -|(% style="width:179px" %)AT+DI2TORO2=2|(% style="width:177px" %)AT+DI2TORO2=2
31 +(% border="1" style="background-color:#f7faff; color:black; width:500px" %)
32 +|=**A's configuration**|=**B's configuration**
33 +|AT+GROUPMOD=0|AT+GROUPMOD=0
34 +|AT+TXCHS=868700000|AT+TXCHS=869000000
35 +|AT+RXCHS=869000000|AT+RXCHS=868700000
36 +|AT+TRIG1=2,50|AT+TRIG1=2,50
37 +|AT+TRIG2=2,50|AT+TRIG2=2,50
38 +|AT+DI1TODO1=2|AT+DI1TODO1=2
39 +|AT+DI1TORO1=2|AT+DI1TORO1=2
40 +|AT+DI2TODO2=2 |AT+DI2TODO2=2
41 +|AT+DI2TORO2=2|AT+DI2TORO2=2
45 45  
46 -=== 2.2.3 Serial port display ===
47 47  
48 48  
45 +=== **2.2.3 Serial port display** ===
46 +
47 +
49 49  (% class="wikigeneratedid" %)
50 50  [[image:image-20220602111219-2.png]]
51 51  
... ... @@ -53,23 +53,22 @@
53 53  (% class="wikigeneratedid" %)
54 54  [[image:image-20220602111219-3.png]]
55 55  
56 -
57 57  (% class="wikigeneratedid" %)
58 58  If the sender does not get the ACK reply from the receiver, it will retransmit up to 4 times, each interval is 6 seconds, and the UplinkCounter of the retransmission will not increase.
59 59  
60 60  
61 -== 2.2  Point To Mult-Point ==
59 +== **2.2  Point To Mult-Point ** ==
62 62  
63 -=== 2.2.1 Overview ===
61 +=== **2.2.1 Overview** ===
64 64  
65 65  
66 66  [[image:1654152390874-192.png]]
67 67  
68 68  
69 -=== 2.2.2  Configure ===
67 +=== **2.2.2  Configure** ===
70 70  
71 71  
72 -(% style="color:blue" %)**Configuration of the TX group:**
70 +(% style="color:#4f81bd" %)**Configuration of the TX group:**
73 73  
74 74  AT+GROUPMOD=0,2
75 75  
... ... @@ -90,7 +90,7 @@
90 90  AT+DI2TORO2=1
91 91  
92 92  
93 -(% style="color:blue" %)**Configuration for RX group number 1:**
91 +(% style="color:#4f81bd" %)**Configuration for RX group number 1:**
94 94  
95 95  AT+GROUPMOD=1,1
96 96  
... ... @@ -99,7 +99,7 @@
99 99  AT+RXCHS=868700000
100 100  
101 101  
102 -(% style="color:blue" %)**Configuration for RX group number 2:**
100 +(% style="color:#4f81bd" %)**Configuration for RX group number 2:**
103 103  
104 104  AT+GROUPMOD=1,2
105 105  
... ... @@ -108,7 +108,7 @@
108 108  AT+RXCHS=868700000
109 109  
110 110  
111 -=== 2.2.3 Serial port display ===
109 +=== **2.2.3 Serial port display** ===
112 112  
113 113  
114 114  [[image:image-20220602144747-1.png]]
... ... @@ -116,13 +116,12 @@
116 116  
117 117  [[image:image-20220602144747-2.png]]
118 118  
119 -
120 120  (((
121 121  If the TX group does not receive all the ACK replies from the RX group, it will retransmit up to 4 times, each time interval is 30 seconds, and the retransmission UplinkCounter will not increase.
122 122  )))
123 123  
124 124  
125 -== 2.3 AT command ==
122 +== **2.3 AT command** ==
126 126  
127 127  
128 128  (((
... ... @@ -223,18 +223,28 @@
223 223  (% style="color:#037691" %)**AT+DI2TORO2 **(%%)**:    **Set or get the mode in which DI2 maps to RO2(default 0)
224 224  )))
225 225  
223 +(((
224 +
225 +)))
226 226  
227 227  (((
228 -(% style="color:blue" %)**Example 1:**
228 +
229 229  )))
230 230  
231 231  (((
232 +(% style="color:#4f81bd" %)**Example 1:**
233 +)))
234 +
235 +(((
232 232  **AT+SEND=01020304 **will send a payload of 01020304
233 233  )))
234 234  
239 +(((
240 +
241 +)))
235 235  
236 236  (((
237 -(% style="color:blue" %)**Example 2: **
244 +(% style="color:#4f81bd" %)**Example 2: **
238 238  )))
239 239  
240 240  (((
... ... @@ -246,28 +246,31 @@
246 246  )))
247 247  
248 248  (((
249 -**a=0:** falling edge;
256 +a=0: falling edge;
250 250  )))
251 251  
252 252  (((
253 -**a=1: **rising edge;
260 +a=1: rising edge;
254 254  )))
255 255  
256 256  (((
257 -**a=2:** falling edge or rising edge;
264 +a=2: falling edge or rising edge;
258 258  )))
259 259  
260 260  (((
261 -**b:**  triggering time in milliseconds.
268 +b:  triggering time in milliseconds.
262 262  )))
263 263  
264 264  (((
265 -**AT+TRIGx=2,50**  Falling edge or rising edge trigger, and the trigger time exceeds 50ms.
272 +AT+TRIGx=2,50  Falling edge or rising edge trigger, and the trigger time exceeds 50ms.
266 266  )))
267 267  
275 +(((
276 +
277 +)))
268 268  
269 269  (((
270 -(% style="color:blue" %)**Example 3: **
280 +(% style="color:#4f81bd" %)**Example 3: **
271 271  )))
272 272  
273 273  (((
... ... @@ -290,12 +290,12 @@
290 290  
291 291  )))
292 292  
293 -(% border="1" style="background-color:#f7faff; color:black; width:690px" %)
303 +(% border="1" style="background-color:#f7faff; color:black; width:706px" %)
294 294  |=(% style="width: 102px;" %)(((
295 295  Maps value
296 296  )))|=(% style="width: 331px;" %)(((
297 297  DIx to DOx
298 -)))|=(% style="width: 251px;" %)(((
308 +)))|=(% style="width: 268px;" %)(((
299 299  DIx to ROx
300 300  )))
301 301  |(% style="width:102px" %)(((
... ... @@ -302,7 +302,7 @@
302 302  0
303 303  )))|(% style="width:331px" %)(((
304 304  No Action
305 -)))|(% style="width:251px" %)(((
315 +)))|(% style="width:268px" %)(((
306 306  No Action
307 307  )))
308 308  |(% style="width:102px" %)(((
... ... @@ -309,7 +309,7 @@
309 309  1
310 310  )))|(% style="width:331px" %)(((
311 311  If DIx is high, control DOx to output low level, If DIx is low, control DOx to output high level
312 -)))|(% style="width:251px" %)(((
322 +)))|(% style="width:268px" %)(((
313 313  (((
314 314  If DIx is high, control ROx to close,
315 315  )))
... ... @@ -322,7 +322,7 @@
322 322  2
323 323  )))|(% style="width:331px" %)(((
324 324  If DIx is high, control DOx to output high level, If DIx is low, control DOx to output low level
325 -)))|(% style="width:251px" %)(((
335 +)))|(% style="width:268px" %)(((
326 326  (((
327 327  If DIx is high, control ROx to open,
328 328  )))
... ... @@ -335,14 +335,12 @@
335 335  3
336 336  )))|(% style="width:331px" %)(((
337 337  DOx state flip
338 -)))|(% style="width:251px" %)(((
348 +)))|(% style="width:268px" %)(((
339 339  ROx state flip
340 340  )))
341 341  
342 342  (((
343 -
344 -
345 -(% style="color:blue" %)**Example 4: **
353 +(% style="color:#4f81bd" %)**Example 4: **
346 346  )))
347 347  
348 348  (((
... ... @@ -354,8 +354,10 @@
354 354  )))
355 355  
356 356  (((
365 +(((
357 357  **AT+GROUPMOD=1,bb**  Set to the RX group controlled by the TX group, numbered bb(The maximum value of aa is 8)
358 358  )))
368 +)))
359 359  
360 360  (((
361 361  **AT+GROUPMOD=0,2**  Set to control the TX group of the two RX groups
... ... @@ -370,272 +370,73 @@
370 370  )))
371 371  
372 372  
373 -=== 2.3.1 TRIG command is configured in the transmit LT. (LT1)(Since firmware 1.3) ===
383 +== **2.4 Data Format** ==
374 374  
375 -
376 -**AT+TRIGx=a          **Trigger transmit directly without triggering time
377 -
378 -**AT+TRIGx=a,b**  Trigger transmit with triggering time threshold
379 -
380 -**AT+TRIGx=a,b,c    **Trigger transmit with triggering time threshold, and continue to transmit every xx seconds if DI status no change.
381 -
382 -
383 -**a=0:** falling edge;
384 -
385 -**a=1:** rising edge;
386 -
387 -**a=2:** falling edge or rising edge;
388 -
389 -**b:**  triggering time in milliseconds.
390 -
391 -**c:** transmit interval
392 -
393 -
394 -(% style="color:blue" %)**Use Case 1**(%%):  Once the DI1 port status change ( either from low to high or high to low, LT1 sends a trigger to LT-2)
395 -
396 -**Command:**
397 -
398 -**AT+TRIG1=2,50**  Falling edge or rising edge trigger, and the trigger time should exceed 50ms.
399 -
400 -
401 -(% style="color:blue" %)**Use Case 2:  **(%%)Sync LT2 RO / DO status with LT1 every minute.
402 -
403 -**Command:**
404 -
405 -**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.
406 -
407 -
408 -=== 2.3.2 RO/DO is configured in the receiver LT (LT2)(Since firmware 1.3) ===
409 -
410 -
411 -AT+DI1TODO1= maps value[,latch time]
412 -
413 -AT+DI1TORO1= maps value[,latch time]
414 -
415 -AT+DI2TODO2= maps value[,latch time]
416 -
417 -AT+DI2TORO2= maps value[,latch time]
418 -
419 -
420 -(% border="1" style="background-color:#f7faff; color:black; width:774px" %)
421 -|(% style="width:105px" %) **Maps value**|(% style="width:415px" %)**DIx to DOx**|(% style="width:249px" %)**DIx to ROx**
422 -|(% style="width:105px" %)0|(% style="width:415px" %)No Action|(% style="width:249px" %)No Action
423 -|(% style="width:105px" %)1|(% style="width:415px" %)If DIx is high, control DOx to output low level, If DIx is low, control DOx to output high level|(% style="width:249px" %)(((
424 -If DIx is high, control ROx to close,
425 -
426 -if DIx is low, control ROx to open
385 +(((
386 +8 bytes of GROUPID + 9 bytes of payload + 4 bytes of checksum
427 427  )))
428 -|(% style="width:105px" %)2|(% style="width:415px" %)If DIx is high, control DOx to output high level, If DIx is low, control DOx to output low level|(% style="width:249px" %)(((
429 -If DIx is high, control ROx to open,
430 430  
431 -if DIx is low, control ROx to close
432 -)))
433 -|(% style="width:105px" %)3|(% style="width:415px" %)DOx state flip|(% style="width:249px" %)ROx state flip
434 -
435 -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.
436 -
437 -
438 -(% style="color:blue" %)**Case1**:
439 -
440 -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.
441 -
442 -
443 -(% style="color:blue" %)**Case2**:
444 -
445 -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.
446 -
447 -
448 -=== 2.3.3 Save the RO/DO status during power off(Since firmware 1.3) ===
449 -
450 -
451 -Enable/Disbale retain Digital Output/Relay Output after power off / Power On
452 -
453 -**AT+DOROSAVE=0**  ~/~/ Disable Retain after power off/on
454 -
455 -**AT+DOROSAVE=1**  ~/~/ Enable Retain after power off/on
456 -
457 -**AT+DOROSAVE=2,a,b,c,d**  ~/~/ set DO/RO port to default state after power on.
458 -
459 -**a: **for DO1
460 -
461 -**b:** for DO2
462 -
463 -**c: **for RO1
464 -
465 -**d:** for RO2.
466 -
467 -
468 -**Example:**
469 -
470 -AT+DOROSAVE=2,0,0,0,1  ~/~/ Set DO1/DO2 to Low, RO1 to open after power on , set RO2 to close after power on.
471 -
472 -
473 -=== 2.3.4 Control Sleep status.(Since firmware 1.3) ===
474 -
475 -
476 -DI2 can be used to set LT into sleep mode.
477 -
478 -**AT+DI2SLEEP=1**  ~/~/  Enable DI2 as Sleep pin
479 -
480 -**AT+DI2SLEEP=0**  ~/~/  Disable DI2 as Sleep pin
481 -
482 -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.
483 -
484 -
485 -== 2.4 Data Format ==
486 -
487 -
488 488  (((
489 -8 bytes of GROUPID + 9 bytes of payload + 4 bytes of checksum
390 +
490 490  )))
491 491  
492 492  (((
493 -(% style="color:blue" %)**Payload:**
394 +(% style="color:#4f81bd" %)**Payload:**
494 494  )))
495 495  
496 -(% border="1" style="background-color:#f7faff; color:black; width:825px" %)
497 -|=(% style="width: 102px;" %)(((
397 +(% border="1" style="background-color:#f7faff; color:black; width:938px" %)
398 +|=(% style="width: 123px;" %)(((
498 498  **Size (bytes)**
499 -)))|=(% style="width: 74px;" %)(((
400 +)))|=(% style="width: 107px;" %)(((
500 500  1
501 -)))|=(% style="width: 72px;" %)(((
402 +)))|=(% style="width: 107px;" %)(((
502 502  1
503 -)))|=(% style="width: 47px;" %)(((
404 +)))|=(% style="width: 107px;" %)(((
504 504  1
505 -)))|=(% style="width: 83px;" %)(((
406 +)))|=(% style="width: 107px;" %)(((
506 506  1
507 -)))|=(% style="width: 90px;" %)(((
408 +)))|=(% style="width: 107px;" %)(((
508 508  1
509 -)))|=(% style="width: 92px;" %)(((
410 +)))|=(% style="width: 107px;" %)(((
510 510  1
511 -)))|=(% style="width: 78px;" %)(((
412 +)))|=(% style="width: 107px;" %)(((
512 512  1
513 -)))|=(% style="width: 91px;" %)(((
414 +)))|=(% style="width: 107px;" %)(((
514 514  1
515 -)))|=(% style="width: 91px;" %)(((
416 +)))|=(% style="width: 107px;" %)(((
516 516  1
517 517  )))
518 -|(% style="width:102px" %)(((
419 +|(% style="width:123px" %)(((
519 519  **Value**
520 -)))|(% style="width:74px" %)(((
421 +)))|(% style="width:38px" %)(((
521 521  address
522 -)))|(% style="width:72px" %)(((
423 +)))|(% style="width:70px" %)(((
523 523  request
524 -)))|(% style="width:47px" %)(((
425 +)))|(% style="width:52px" %)(((
525 525  ACK
526 -)))|(% style="width:83px" %)(((
427 +)))|(% style="width:127px" %)(((
527 527  (((
528 528  DI1&
430 +)))
431 +
432 +(((
529 529  DI1 level
530 530  )))
531 -)))|(% style="width:90px" %)(((
435 +)))|(% style="width:101px" %)(((
532 532  DI1TODO1
533 -)))|(% style="width:92px" %)(((
437 +)))|(% style="width:91px" %)(((
534 534  DI1TORO1
535 -)))|(% style="width:78px" %)(((
439 +)))|(% style="width:111px" %)(((
536 536  (((
537 537  DI2&
538 -DI2 leve
539 539  )))
540 -)))|(% style="width:91px" %)(((
541 -DI2TODO2
542 -)))|(% style="width:91px" %)(((
543 -DI2TORO2
544 -)))
545 545  
546 546  (((
547 -(% style="color:#037691" %)**The first byte**(%%)**:**  00 is the broadcast address, 01-08 is the RX group number.
445 +DI2 level
548 548  )))
549 -
550 -(((
551 -(% style="color:#037691" %)**The second byte**(%%)**:**  send mapping request when not 0, not request when it is 0.
552 -)))
553 -
554 -(((
555 -(% style="color:#037691" %)**The third byte**(%%)**:**  ACK returned to the sender after the mapping is completed.
556 -)))
557 -
558 -(((
559 -(((
560 -(% style="color:#037691" %)**The fourth byte**(%%)**:**  the high four bits are 1 to represent DI1, and the low four bits are the level of DI1 when the interrupt is triggered.
561 -)))
562 -)))
563 -
564 -(((
565 -(% style="color:#037691" %)**The Fifth byte**(%%)**:       **DI1TODO1 when the interrupt is triggered, 0 when the interrupt is not triggered.
566 -)))
567 -
568 -(((
569 -(% style="color:#037691" %)**The Sixth byte**(%%)**:**  0 does not trigger interrupt when DI1TORO1 interrupt is triggered.
570 -)))
571 -
572 -(((
573 -(((
574 -(% style="color:#037691" %)**The seventh byte**(%%)**:**  the high four bits are 2 to represent DI2, and the low four bits are the level of DI2 when the interrupt is triggered.
575 -)))
576 -)))
577 -
578 -(((
579 -(% style="color:#037691" %)**The 8th byte**(%%)**:          **DI2TODO2 when the interrupt is triggered, 0 when the interrupt is not triggered.
580 -)))
581 -
582 -(((
583 -(% style="color:#037691" %)**The 9th byte**(%%)**:**  DI2TORO2 when an interrupt is triggered, 0 when an interrupt is not triggered.
584 -)))
585 -
586 -(((
587 -
588 -
589 -(% style="color:blue" %)**Payload:（Since firmware 1.3）The receiver replies to the sent packet**
590 -)))
591 -
592 -(% border="1" style="background-color:#f7faff; color:black; width:822px" %)
593 -|=(% style="width: 97px;" %)(((
594 -**Size(bytes)**
595 -)))|=(% style="width: 71px;" %)(((
596 -1
597 -)))|=(% style="width: 70px;" %)(((
598 -1
599 -)))|=(% style="width: 48px;" %)(((
600 -1
601 -)))|=(% style="width: 85px;" %)(((
602 -1
603 -)))|=(% style="width: 90px;" %)(((
604 -1
605 -)))|=(% style="width: 88px;" %)(((
606 -1
607 -)))|=(% style="width: 86px;" %)(((
608 -1
609 -)))|=(% style="width: 92px;" %)(((
610 -1
611 -)))|=(% style="width: 92px;" %)(((
612 -1
613 -)))
614 -|(% style="width:97px" %)(((
615 -**Value**
616 -)))|(% style="width:71px" %)(((
617 -address
618 -)))|(% style="width:70px" %)(((
619 -request
620 -)))|(% style="width:48px" %)(((
621 -ACK
622 -)))|(% style="width:85px" %)(((
623 -(((
624 -DOI1&
625 -DOI2 level
626 -)))
627 -)))|(% style="width:90px" %)(((
628 -DI1TODO1
629 -)))|(% style="width:88px" %)(((
630 -DI1TORO1
631 -)))|(% style="width:86px" %)(((
632 -(((
633 -RO2&
634 -RO2 level
635 -)))
636 -)))|(% style="width:92px" %)(((
447 +)))|(% style="width:105px" %)(((
637 637  DI2TODO2
638 -)))|(% style="width:92px" %)(((
449 +)))|(% style="width:106px" %)(((
639 639  DI2TORO2
640 640  )))
641 641  
... ... @@ -653,7 +653,7 @@
653 653  
654 654  (((
655 655  (((
656 -(% 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.
467 +(% style="color:#037691" %)**The fourth byte**(%%)**:**  the high four bits are 1 to represent DI1, and the low four bits are the level of DI1 when the interrupt is triggered.
657 657  )))
658 658  )))
659 659  
... ... @@ -667,7 +667,7 @@
667 667  
668 668  (((
669 669  (((
670 -(% style="color:#037691" %)**The seventh byte**(%%)**:**  the high four bits are 2 to represent RO2, and the low four bits are the level of RO2 when the interrupt is triggered.
481 +(% style="color:#037691" %)**The seventh byte**(%%)**:**  the high four bits are 2 to represent DI2, and the low four bits are the level of DI2 when the interrupt is triggered.
671 671  )))
672 672  )))
673 673  

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