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 < 16.2 >
edited by Xiaoling
on 2022/06/02 14:57
>
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
Content
... ... @@ -1,4 +1,4 @@
1 -**Table of Contents： **
1 +**Contents： **
2 2  
3 3  {{toc/}}
4 4  
... ... @@ -5,11 +5,9 @@
5 5  
6 6  
7 7  
8 -= 1. Overview =
8 += **1. Overview** =
9 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  
... ... @@ -18,36 +18,35 @@
18 18  )))
19 19  
20 20  
21 -= 2. Features for this firmware =
19 += **2. Features for this firmware** =
22 22  
23 -== 2.1  Point To Point ==
21 +== **2.1  Point To Point** ==
24 24  
25 -=== 2.1.1 Overview ===
23 +=== **2.1.1 Overview** ===
26 26  
27 27  
28 28  [[image:image-20220602111219-1.png||height="472" width="972"]]
29 29  
30 30  
31 -=== 2.2.2 Configure ===
29 +=== **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
32 +(% border="1" style="background-color:#f7faff; color:black; width:500px" %)
33 +|=**A's configuration**|=**B's configuration**
34 +|AT+GROUPMOD=0|AT+GROUPMOD=0
35 +|AT+TXCHS=868700000|AT+TXCHS=869000000
36 +|AT+RXCHS=869000000|AT+RXCHS=868700000
37 +|AT+TRIG1=2,50|AT+TRIG1=2,50
38 +|AT+TRIG2=2,50|AT+TRIG2=2,50
39 +|AT+DI1TODO1=2|AT+DI1TODO1=2
40 +|AT+DI1TORO1=2|AT+DI1TORO1=2
41 +|AT+DI2TODO2=2 |AT+DI2TODO2=2
42 +|AT+DI2TORO2=2|AT+DI2TORO2=2
45 45  
46 46  
45 +=== **2.2.3 Serial port display** ===
47 47  
48 -=== 2.2.3 Serial port display ===
49 49  
50 -
51 51  (% class="wikigeneratedid" %)
52 52  [[image:image-20220602111219-2.png]]
53 53  
... ... @@ -55,23 +55,22 @@
55 55  (% class="wikigeneratedid" %)
56 56  [[image:image-20220602111219-3.png]]
57 57  
58 -
59 59  (% class="wikigeneratedid" %)
60 60  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.
61 61  
62 62  
63 -== 2.2  Point To Mult-Point ==
59 +== **2.2  Point To Mult-Point ** ==
64 64  
65 -=== 2.2.1 Overview ===
61 +=== **2.2.1 Overview** ===
66 66  
67 67  
68 68  [[image:1654152390874-192.png]]
69 69  
70 70  
71 -=== 2.2.2  Configure ===
67 +=== **2.2.2  Configure** ===
72 72  
73 73  
74 -(% style="color:blue" %)**Configuration of the TX group:**
70 +(% style="color:#4f81bd" %)**Configuration of the TX group:**
75 75  
76 76  AT+GROUPMOD=0,2
77 77  
... ... @@ -92,7 +92,7 @@
92 92  AT+DI2TORO2=1
93 93  
94 94  
95 -(% style="color:blue" %)**Configuration for RX group number 1:**
91 +(% style="color:#4f81bd" %)**Configuration for RX group number 1:**
96 96  
97 97  AT+GROUPMOD=1,1
98 98  
... ... @@ -101,7 +101,7 @@
101 101  AT+RXCHS=868700000
102 102  
103 103  
104 -(% style="color:blue" %)**Configuration for RX group number 2:**
100 +(% style="color:#4f81bd" %)**Configuration for RX group number 2:**
105 105  
106 106  AT+GROUPMOD=1,2
107 107  
... ... @@ -110,7 +110,7 @@
110 110  AT+RXCHS=868700000
111 111  
112 112  
113 -=== 2.2.3 Serial port display ===
109 +=== **2.2.3 Serial port display** ===
114 114  
115 115  
116 116  [[image:image-20220602144747-1.png]]
... ... @@ -118,13 +118,12 @@
118 118  
119 119  [[image:image-20220602144747-2.png]]
120 120  
121 -
122 122  (((
123 123  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.
124 124  )))
125 125  
126 126  
127 -== 2.3 AT command ==
122 +== **2.3 AT command** ==
128 128  
129 129  
130 130  (((
... ... @@ -225,18 +225,28 @@
225 225  (% style="color:#037691" %)**AT+DI2TORO2 **(%%)**:    **Set or get the mode in which DI2 maps to RO2(default 0)
226 226  )))
227 227  
223 +(((
224 +
225 +)))
228 228  
229 229  (((
230 -(% style="color:blue" %)**Example 1:**
228 +
231 231  )))
232 232  
233 233  (((
232 +(% style="color:#4f81bd" %)**Example 1:**
233 +)))
234 +
235 +(((
234 234  **AT+SEND=01020304 **will send a payload of 01020304
235 235  )))
236 236  
239 +(((
240 +
241 +)))
237 237  
238 238  (((
239 -(% style="color:blue" %)**Example 2: **
244 +(% style="color:#4f81bd" %)**Example 2: **
240 240  )))
241 241  
242 242  (((
... ... @@ -248,28 +248,31 @@
248 248  )))
249 249  
250 250  (((
251 -**a=0:** falling edge;
256 +a=0: falling edge;
252 252  )))
253 253  
254 254  (((
255 -**a=1: **rising edge;
260 +a=1: rising edge;
256 256  )))
257 257  
258 258  (((
259 -**a=2:** falling edge or rising edge;
264 +a=2: falling edge or rising edge;
260 260  )))
261 261  
262 262  (((
263 -**b:**  triggering time in milliseconds.
268 +b:  triggering time in milliseconds.
264 264  )))
265 265  
266 266  (((
267 -**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.
268 268  )))
269 269  
275 +(((
276 +
277 +)))
270 270  
271 271  (((
272 -(% style="color:blue" %)**Example 3: **
280 +(% style="color:#4f81bd" %)**Example 3: **
273 273  )))
274 274  
275 275  (((
... ... @@ -292,12 +292,12 @@
292 292  
293 293  )))
294 294  
295 -(% border="1" style="background-color:#f7faff; color:black; width:690px" %)
303 +(% border="1" style="background-color:#f7faff; color:black; width:706px" %)
296 296  |=(% style="width: 102px;" %)(((
297 297  Maps value
298 298  )))|=(% style="width: 331px;" %)(((
299 299  DIx to DOx
300 -)))|=(% style="width: 251px;" %)(((
308 +)))|=(% style="width: 268px;" %)(((
301 301  DIx to ROx
302 302  )))
303 303  |(% style="width:102px" %)(((
... ... @@ -304,7 +304,7 @@
304 304  0
305 305  )))|(% style="width:331px" %)(((
306 306  No Action
307 -)))|(% style="width:251px" %)(((
315 +)))|(% style="width:268px" %)(((
308 308  No Action
309 309  )))
310 310  |(% style="width:102px" %)(((
... ... @@ -311,7 +311,7 @@
311 311  1
312 312  )))|(% style="width:331px" %)(((
313 313  If DIx is high, control DOx to output low level, If DIx is low, control DOx to output high level
314 -)))|(% style="width:251px" %)(((
322 +)))|(% style="width:268px" %)(((
315 315  (((
316 316  If DIx is high, control ROx to close,
317 317  )))
... ... @@ -324,7 +324,7 @@
324 324  2
325 325  )))|(% style="width:331px" %)(((
326 326  If DIx is high, control DOx to output high level, If DIx is low, control DOx to output low level
327 -)))|(% style="width:251px" %)(((
335 +)))|(% style="width:268px" %)(((
328 328  (((
329 329  If DIx is high, control ROx to open,
330 330  )))
... ... @@ -337,14 +337,12 @@
337 337  3
338 338  )))|(% style="width:331px" %)(((
339 339  DOx state flip
340 -)))|(% style="width:251px" %)(((
348 +)))|(% style="width:268px" %)(((
341 341  ROx state flip
342 342  )))
343 343  
344 344  (((
345 -
346 -
347 -(% style="color:blue" %)**Example 4: **
353 +(% style="color:#4f81bd" %)**Example 4: **
348 348  )))
349 349  
350 350  (((
... ... @@ -356,8 +356,10 @@
356 356  )))
357 357  
358 358  (((
365 +(((
359 359  **AT+GROUPMOD=1,bb**  Set to the RX group controlled by the TX group, numbered bb(The maximum value of aa is 8)
360 360  )))
368 +)))
361 361  
362 362  (((
363 363  **AT+GROUPMOD=0,2**  Set to control the TX group of the two RX groups
... ... @@ -372,272 +372,73 @@
372 372  )))
373 373  
374 374  
375 -=== 2.3.1 TRIG command is configured in the transmit LT. (LT1)(Since firmware 1.3) ===
383 +== **2.4 Data Format** ==
376 376  
377 -
378 -**AT+TRIGx=a          **Trigger transmit directly without triggering time
379 -
380 -**AT+TRIGx=a,b**  Trigger transmit with triggering time threshold
381 -
382 -**AT+TRIGx=a,b,c    **Trigger transmit with triggering time threshold, and continue to transmit every xx seconds if DI status no change.
383 -
384 -
385 -**a=0:** falling edge;
386 -
387 -**a=1:** rising edge;
388 -
389 -**a=2:** falling edge or rising edge;
390 -
391 -**b:**  triggering time in milliseconds.
392 -
393 -**c:** transmit interval
394 -
395 -
396 -(% 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)
397 -
398 -**Command:**
399 -
400 -**AT+TRIG1=2,50**  Falling edge or rising edge trigger, and the trigger time should exceed 50ms.
401 -
402 -
403 -(% style="color:blue" %)**Use Case 2:  **(%%)Sync LT2 RO / DO status with LT1 every minute.
404 -
405 -**Command:**
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.
408 -
409 -
410 -=== 2.3.2 RO/DO is configured in the receiver LT (LT2)(Since firmware 1.3) ===
411 -
412 -
413 -AT+DI1TODO1= maps value[,latch time]
414 -
415 -AT+DI1TORO1= maps value[,latch time]
416 -
417 -AT+DI2TODO2= maps value[,latch time]
418 -
419 -AT+DI2TORO2= maps value[,latch time]
420 -
421 -
422 -(% border="1" style="background-color:#f7faff; color:black; width:774px" %)
423 -|(% style="width:105px" %) **Maps value**|(% style="width:415px" %)**DIx to DOx**|(% style="width:249px" %)**DIx to ROx**
424 -|(% style="width:105px" %)0|(% style="width:415px" %)No Action|(% style="width:249px" %)No Action
425 -|(% 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" %)(((
426 -If DIx is high, control ROx to close,
427 -
428 -if DIx is low, control ROx to open
385 +(((
386 +8 bytes of GROUPID + 9 bytes of payload + 4 bytes of checksum
429 429  )))
430 -|(% 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" %)(((
431 -If DIx is high, control ROx to open,
432 432  
433 -if DIx is low, control ROx to close
434 -)))
435 -|(% style="width:105px" %)3|(% style="width:415px" %)DOx state flip|(% style="width:249px" %)ROx state flip
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.
438 -
439 -
440 -(% style="color:blue" %)**Case1**:
441 -
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.
443 -
444 -
445 -(% style="color:blue" %)**Case2**:
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.
448 -
449 -
450 -=== 2.3.3 Save the RO/DO status during power off(Since firmware 1.3) ===
451 -
452 -
453 -Enable/Disbale retain Digital Output/Relay Output after power off / Power On
454 -
455 -**AT+DOROSAVE=0**  ~/~/ Disable Retain after power off/on
456 -
457 -**AT+DOROSAVE=1**  ~/~/ Enable Retain after power off/on
458 -
459 -**AT+DOROSAVE=2,a,b,c,d**  ~/~/ set DO/RO port to default state after power on.
460 -
461 -**a: **for DO1
462 -
463 -**b:** for DO2
464 -
465 -**c: **for RO1
466 -
467 -**d:** for RO2.
468 -
469 -
470 -**Example:**
471 -
472 -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.
473 -
474 -
475 -=== 2.3.4 Control Sleep status.(Since firmware 1.3) ===
476 -
477 -
478 -DI2 can be used to set LT into sleep mode.
479 -
480 -**AT+DI2SLEEP=1**  ~/~/  Enable DI2 as Sleep pin
481 -
482 -**AT+DI2SLEEP=0**  ~/~/  Disable DI2 as Sleep pin
483 -
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 -
486 -
487 -== 2.4 Data Format ==
488 -
489 -
490 490  (((
491 -8 bytes of GROUPID + 9 bytes of payload + 4 bytes of checksum
390 +
492 492  )))
493 493  
494 494  (((
495 -(% style="color:blue" %)**Payload:**
394 +(% style="color:#4f81bd" %)**Payload:**
496 496  )))
497 497  
498 -(% border="1" style="background-color:#f7faff; color:black; width:825px" %)
499 -|=(% style="width: 102px;" %)(((
397 +(% border="1" style="background-color:#f7faff; color:black; width:938px" %)
398 +|=(% style="width: 123px;" %)(((
500 500  **Size (bytes)**
501 -)))|=(% style="width: 74px;" %)(((
400 +)))|=(% style="width: 107px;" %)(((
502 502  1
503 -)))|=(% style="width: 72px;" %)(((
402 +)))|=(% style="width: 107px;" %)(((
504 504  1
505 -)))|=(% style="width: 47px;" %)(((
404 +)))|=(% style="width: 107px;" %)(((
506 506  1
507 -)))|=(% style="width: 83px;" %)(((
406 +)))|=(% style="width: 107px;" %)(((
508 508  1
509 -)))|=(% style="width: 90px;" %)(((
408 +)))|=(% style="width: 107px;" %)(((
510 510  1
511 -)))|=(% style="width: 92px;" %)(((
410 +)))|=(% style="width: 107px;" %)(((
512 512  1
513 -)))|=(% style="width: 78px;" %)(((
412 +)))|=(% style="width: 107px;" %)(((
514 514  1
515 -)))|=(% style="width: 91px;" %)(((
414 +)))|=(% style="width: 107px;" %)(((
516 516  1
517 -)))|=(% style="width: 91px;" %)(((
416 +)))|=(% style="width: 107px;" %)(((
518 518  1
519 519  )))
520 -|(% style="width:102px" %)(((
419 +|(% style="width:123px" %)(((
521 521  **Value**
522 -)))|(% style="width:74px" %)(((
421 +)))|(% style="width:38px" %)(((
523 523  address
524 -)))|(% style="width:72px" %)(((
423 +)))|(% style="width:70px" %)(((
525 525  request
526 -)))|(% style="width:47px" %)(((
425 +)))|(% style="width:52px" %)(((
527 527  ACK
528 -)))|(% style="width:83px" %)(((
427 +)))|(% style="width:127px" %)(((
529 529  (((
530 530  DI1&
430 +)))
431 +
432 +(((
531 531  DI1 level
532 532  )))
533 -)))|(% style="width:90px" %)(((
435 +)))|(% style="width:101px" %)(((
534 534  DI1TODO1
535 -)))|(% style="width:92px" %)(((
437 +)))|(% style="width:91px" %)(((
536 536  DI1TORO1
537 -)))|(% style="width:78px" %)(((
439 +)))|(% style="width:111px" %)(((
538 538  (((
539 539  DI2&
540 -DI2 leve
541 541  )))
542 -)))|(% style="width:91px" %)(((
543 -DI2TODO2
544 -)))|(% style="width:91px" %)(((
545 -DI2TORO2
546 -)))
547 547  
548 548  (((
549 -(% style="color:#037691" %)**The first byte**(%%)**:**  00 is the broadcast address, 01-08 is the RX group number.
445 +DI2 level
550 550  )))
551 -
552 -(((
553 -(% style="color:#037691" %)**The second byte**(%%)**:**  send mapping request when not 0, not request when it is 0.
554 -)))
555 -
556 -(((
557 -(% style="color:#037691" %)**The third byte**(%%)**:**  ACK returned to the sender after the mapping is completed.
558 -)))
559 -
560 -(((
561 -(((
562 -(% 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.
563 -)))
564 -)))
565 -
566 -(((
567 -(% style="color:#037691" %)**The Fifth byte**(%%)**:       **DI1TODO1 when the interrupt is triggered, 0 when the interrupt is not triggered.
568 -)))
569 -
570 -(((
571 -(% style="color:#037691" %)**The Sixth byte**(%%)**:**  0 does not trigger interrupt when DI1TORO1 interrupt is triggered.
572 -)))
573 -
574 -(((
575 -(((
576 -(% 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.
577 -)))
578 -)))
579 -
580 -(((
581 -(% style="color:#037691" %)**The 8th byte**(%%)**:          **DI2TODO2 when the interrupt is triggered, 0 when the interrupt is not triggered.
582 -)))
583 -
584 -(((
585 -(% style="color:#037691" %)**The 9th byte**(%%)**:**  DI2TORO2 when an interrupt is triggered, 0 when an interrupt is not triggered.
586 -)))
587 -
588 -(((
589 -
590 -
591 -(% style="color:blue" %)**Payload:（Since firmware 1.3）The receiver replies to the sent packet**
592 -)))
593 -
594 -(% border="1" style="background-color:#f7faff; color:black; width:822px" %)
595 -|=(% style="width: 97px;" %)(((
596 -**Size(bytes)**
597 -)))|=(% style="width: 71px;" %)(((
598 -1
599 -)))|=(% style="width: 70px;" %)(((
600 -1
601 -)))|=(% style="width: 48px;" %)(((
602 -1
603 -)))|=(% style="width: 85px;" %)(((
604 -1
605 -)))|=(% style="width: 90px;" %)(((
606 -1
607 -)))|=(% style="width: 88px;" %)(((
608 -1
609 -)))|=(% style="width: 86px;" %)(((
610 -1
611 -)))|=(% style="width: 92px;" %)(((
612 -1
613 -)))|=(% style="width: 92px;" %)(((
614 -1
615 -)))
616 -|(% style="width:97px" %)(((
617 -**Value**
618 -)))|(% style="width:71px" %)(((
619 -address
620 -)))|(% style="width:70px" %)(((
621 -request
622 -)))|(% style="width:48px" %)(((
623 -ACK
624 -)))|(% style="width:85px" %)(((
625 -(((
626 -DO1&
627 -DO1 level
628 -)))
629 -)))|(% style="width:90px" %)(((
630 -DI1TODO1
631 -)))|(% style="width:88px" %)(((
632 -DI1TORO1
633 -)))|(% style="width:86px" %)(((
634 -(((
635 -RO2&
636 -RO2 level
637 -)))
638 -)))|(% style="width:92px" %)(((
447 +)))|(% style="width:105px" %)(((
639 639  DI2TODO2
640 -)))|(% style="width:92px" %)(((
449 +)))|(% style="width:106px" %)(((
641 641  DI2TORO2
642 642  )))
643 643  
... ... @@ -655,7 +655,7 @@
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.
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.
659 659  )))
660 660  )))
661 661  
... ... @@ -669,7 +669,7 @@
669 669  
670 670  (((
671 671  (((
672 -(% 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.
673 673  )))
674 674  )))
675 675  

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