Last modified by Edwin Chen on 2022/11/22 09:38
<
From version < 24.1 >
edited by Edwin Chen
on 2022/11/16 15:38
To version < 15.2 >
edited by Xiaoling
on 2022/06/02 14:51
>
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.Edwin
1 +XWiki.Xiaoling
Content
... ... @@ -1,52 +1,48 @@
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  
16 16  (((
17 - [[LT22222-L_PingPong_Software>>https://github.com/dragino/LT-22222-L]]
18 -
19 -
12 +[[Point to Point Software for LT-22222-L>>https://github.com/dragino/LT-22222-L]].
20 20  )))
21 21  
22 -= 2. Features for this firmware =
15 +== ==
23 23  
24 -== 2.1  Point To Point ==
17 += **2. Features for this firmware** =
25 25  
26 -=== 2.1.1 Overview ===
27 27  
20 +== **2.1  Point To Point** ==
28 28  
22 +=== **2.1.1 Overview** ===
23 +
29 29  [[image:image-20220602111219-1.png||height="472" width="972"]]
30 30  
31 31  
32 -=== 2.2.2 Configure ===
27 +=== **2.2.2 Configure** ===
33 33  
29 +(% border="1" style="background-color:#f7faff; color:black; width:500px" %)
30 +|=**A's configuration**|=**B's configuration**
31 +|AT+GROUPMOD=0|AT+GROUPMOD=0
32 +|AT+TXCHS=868700000|AT+TXCHS=869000000
33 +|AT+RXCHS=869000000|AT+RXCHS=868700000
34 +|AT+TRIG1=2,50|AT+TRIG1=2,50
35 +|AT+TRIG2=2,50|AT+TRIG2=2,50
36 +|AT+DI1TODO1=2|AT+DI1TODO1=2
37 +|AT+DI1TORO1=2|AT+DI1TORO1=2
38 +|AT+DI2TODO2=2 |AT+DI2TODO2=2
39 +|AT+DI2TORO2=2|AT+DI2TORO2=2
34 34  
35 -(% border="1" style="background-color:#f7faff; color:black; width:360px" %)
36 -|=(% style="width: 179px;" %)**A's configuration**|=(% style="width: 177px;" %)**B's configuration**
37 -|(% style="width:179px" %)AT+GROUPMOD=0|(% style="width:177px" %)AT+GROUPMOD=0
38 -|(% style="width:179px" %)AT+TXCHS=868700000|(% style="width:177px" %)AT+TXCHS=869000000
39 -|(% style="width:179px" %)AT+RXCHS=869000000|(% style="width:177px" %)AT+RXCHS=868700000
40 -|(% style="width:179px" %)AT+TRIG1=2,50|(% style="width:177px" %)AT+TRIG1=2,50
41 -|(% style="width:179px" %)AT+TRIG2=2,50|(% style="width:177px" %)AT+TRIG2=2,50
42 -|(% style="width:179px" %)AT+DI1TODO1=2|(% style="width:177px" %)AT+DI1TODO1=2
43 -|(% style="width:179px" %)AT+DI1TORO1=2|(% style="width:177px" %)AT+DI1TORO1=2
44 -|(% style="width:179px" %)AT+DI2TODO2=2 |(% style="width:177px" %)AT+DI2TODO2=2
45 -|(% style="width:179px" %)AT+DI2TORO2=2|(% style="width:177px" %)AT+DI2TORO2=2
46 46  
47 -=== 2.2.3 Serial port display ===
48 48  
43 +=== **2.2.3 Serial port display** ===
49 49  
45 +
50 50  (% class="wikigeneratedid" %)
51 51  [[image:image-20220602111219-2.png]]
52 52  
... ... @@ -54,23 +54,22 @@
54 54  (% class="wikigeneratedid" %)
55 55  [[image:image-20220602111219-3.png]]
56 56  
57 -
58 58  (% class="wikigeneratedid" %)
59 59  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.
60 60  
61 61  
62 -== 2.2  Point To Mult-Point ==
57 +== **2.2  Point To Mult-Point ** ==
63 63  
64 -=== 2.2.1 Overview ===
59 +=== **2.2.1 Overview** ===
65 65  
66 66  
67 67  [[image:1654152390874-192.png]]
68 68  
69 69  
70 -=== 2.2.2  Configure ===
65 +=== **2.2.2  Configure** ===
71 71  
72 72  
73 -(% style="color:blue" %)**Configuration of the TX group:**
68 +(% style="color:#4f81bd" %)**Configuration of the TX group:**
74 74  
75 75  AT+GROUPMOD=0,2
76 76  
... ... @@ -91,7 +91,7 @@
91 91  AT+DI2TORO2=1
92 92  
93 93  
94 -(% style="color:blue" %)**Configuration for RX group number 1:**
89 +(% style="color:#4f81bd" %)**Configuration for RX group number 1:**
95 95  
96 96  AT+GROUPMOD=1,1
97 97  
... ... @@ -100,7 +100,7 @@
100 100  AT+RXCHS=868700000
101 101  
102 102  
103 -(% style="color:blue" %)**Configuration for RX group number 2:**
98 +(% style="color:#4f81bd" %)**Configuration for RX group number 2:**
104 104  
105 105  AT+GROUPMOD=1,2
106 106  
... ... @@ -109,7 +109,7 @@
109 109  AT+RXCHS=868700000
110 110  
111 111  
112 -=== 2.2.3 Serial port display ===
107 +=== **2.2.3 Serial port display** ===
113 113  
114 114  
115 115  [[image:image-20220602144747-1.png]]
... ... @@ -117,15 +117,16 @@
117 117  
118 118  [[image:image-20220602144747-2.png]]
119 119  
120 -
121 121  (((
122 122  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.
123 123  )))
124 124  
125 125  
126 -== 2.3 AT command ==
127 127  
128 128  
122 +== **2.3 AT command** ==
123 +
124 +
129 129  (((
130 130  (% style="color:#037691" %)**ATZ** (%%)**: ** Trig a reset of the MCU
131 131  )))
... ... @@ -224,18 +224,28 @@
224 224  (% style="color:#037691" %)**AT+DI2TORO2 **(%%)**:    **Set or get the mode in which DI2 maps to RO2(default 0)
225 225  )))
226 226  
223 +(((
224 +
225 +)))
227 227  
228 228  (((
229 -(% style="color:blue" %)**Example 1:**
228 +
230 230  )))
231 231  
232 232  (((
232 +(% style="color:#4f81bd" %)**Example 1:**
233 +)))
234 +
235 +(((
233 233  **AT+SEND=01020304 **will send a payload of 01020304
234 234  )))
235 235  
239 +(((
240 +
241 +)))
236 236  
237 237  (((
238 -(% style="color:blue" %)**Example 2: **
244 +(% style="color:#4f81bd" %)**Example 2: **
239 239  )))
240 240  
241 241  (((
... ... @@ -247,28 +247,31 @@
247 247  )))
248 248  
249 249  (((
250 -**a=0:** falling edge;
256 +a=0: falling edge;
251 251  )))
252 252  
253 253  (((
254 -**a=1: **rising edge;
260 +a=1: rising edge;
255 255  )))
256 256  
257 257  (((
258 -**a=2:** falling edge or rising edge;
264 +a=2: falling edge or rising edge;
259 259  )))
260 260  
261 261  (((
262 -**b:**  triggering time in milliseconds.
268 +b:  triggering time in milliseconds.
263 263  )))
264 264  
265 265  (((
266 -**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.
267 267  )))
268 268  
275 +(((
276 +
277 +)))
269 269  
270 270  (((
271 -(% style="color:blue" %)**Example 3: **
280 +(% style="color:#4f81bd" %)**Example 3: **
272 272  )))
273 273  
274 274  (((
... ... @@ -291,12 +291,12 @@
291 291  
292 292  )))
293 293  
294 -(% border="1" style="background-color:#f7faff; color:black; width:690px" %)
303 +(% border="1" style="background-color:#f7faff; color:black; width:706px" %)
295 295  |=(% style="width: 102px;" %)(((
296 296  Maps value
297 297  )))|=(% style="width: 331px;" %)(((
298 298  DIx to DOx
299 -)))|=(% style="width: 251px;" %)(((
308 +)))|=(% style="width: 268px;" %)(((
300 300  DIx to ROx
301 301  )))
302 302  |(% style="width:102px" %)(((
... ... @@ -303,7 +303,7 @@
303 303  0
304 304  )))|(% style="width:331px" %)(((
305 305  No Action
306 -)))|(% style="width:251px" %)(((
315 +)))|(% style="width:268px" %)(((
307 307  No Action
308 308  )))
309 309  |(% style="width:102px" %)(((
... ... @@ -310,7 +310,7 @@
310 310  1
311 311  )))|(% style="width:331px" %)(((
312 312  If DIx is high, control DOx to output low level, If DIx is low, control DOx to output high level
313 -)))|(% style="width:251px" %)(((
322 +)))|(% style="width:268px" %)(((
314 314  (((
315 315  If DIx is high, control ROx to close,
316 316  )))
... ... @@ -323,7 +323,7 @@
323 323  2
324 324  )))|(% style="width:331px" %)(((
325 325  If DIx is high, control DOx to output high level, If DIx is low, control DOx to output low level
326 -)))|(% style="width:251px" %)(((
335 +)))|(% style="width:268px" %)(((
327 327  (((
328 328  If DIx is high, control ROx to open,
329 329  )))
... ... @@ -336,14 +336,12 @@
336 336  3
337 337  )))|(% style="width:331px" %)(((
338 338  DOx state flip
339 -)))|(% style="width:251px" %)(((
348 +)))|(% style="width:268px" %)(((
340 340  ROx state flip
341 341  )))
342 342  
343 343  (((
344 -
345 -
346 -(% style="color:blue" %)**Example 4: **
353 +(% style="color:#4f81bd" %)**Example 4: **
347 347  )))
348 348  
349 349  (((
... ... @@ -355,8 +355,10 @@
355 355  )))
356 356  
357 357  (((
365 +(((
358 358  **AT+GROUPMOD=1,bb**  Set to the RX group controlled by the TX group, numbered bb(The maximum value of aa is 8)
359 359  )))
368 +)))
360 360  
361 361  (((
362 362  **AT+GROUPMOD=0,2**  Set to control the TX group of the two RX groups
... ... @@ -371,274 +371,73 @@
371 371  )))
372 372  
373 373  
374 -=== 2.3.1 TRIG command is configured in the transmit LT. (LT1)(Since firmware 1.3) ===
383 +== **2.4 Data Format** ==
375 375  
376 -
377 -**AT+TRIGx=a          **Trigger transmit directly without triggering time
378 -
379 -**AT+TRIGx=a,b**  Trigger transmit with triggering time threshold
380 -
381 -**AT+TRIGx=a,b,c    **Trigger transmit with triggering time threshold, and continue to transmit every xx seconds if DI status no change.
382 -
383 -
384 -**a=0:** falling edge;
385 -
386 -**a=1:** rising edge;
387 -
388 -**a=2:** falling edge or rising edge;
389 -
390 -**b:**  triggering time in milliseconds.
391 -
392 -**c:** transmit interval
393 -
394 -
395 -(% 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)
396 -
397 -**Command:**
398 -
399 -**AT+TRIG1=2,50**  Falling edge or rising edge trigger, and the trigger time should exceed 50ms.
400 -
401 -
402 -(% style="color:blue" %)**Use Case 2:  **(%%)Sync LT2 RO / DO status with LT1 every minute.
403 -
404 -**Command:**
405 -
406 -**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.
407 -
408 -
409 -=== 2.3.2 RO/DO is configured in the receiver LT (LT2)(Since firmware 1.3) ===
410 -
411 -
412 -AT+DI1TODO1= maps value[,latch time]
413 -
414 -AT+DI1TORO1= maps value[,latch time]
415 -
416 -AT+DI2TODO2= maps value[,latch time]
417 -
418 -AT+DI2TORO2= maps value[,latch time]
419 -
420 -
421 -(% border="1" style="background-color:#f7faff; color:black; width:774px" %)
422 -|(% style="width:105px" %) **Maps value**|(% style="width:415px" %)**DIx to DOx**|(% style="width:249px" %)**DIx to ROx**
423 -|(% style="width:105px" %)0|(% style="width:415px" %)No Action|(% style="width:249px" %)No Action
424 -|(% 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" %)(((
425 -If DIx is high, control ROx to close,
426 -
427 -if DIx is low, control ROx to open
385 +(((
386 +8 bytes of GROUPID + 9 bytes of payload + 4 bytes of checksum
428 428  )))
429 -|(% 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" %)(((
430 -If DIx is high, control ROx to open,
431 431  
432 -if DIx is low, control ROx to close
433 -)))
434 -|(% style="width:105px" %)3|(% style="width:415px" %)DOx state flip|(% style="width:249px" %)ROx state flip
435 -
436 -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.
437 -
438 -
439 -(% style="color:blue" %)**Case1**:
440 -
441 -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.
442 -
443 -
444 -(% style="color:blue" %)**Case2**:
445 -
446 -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.
447 -
448 -
449 -=== 2.3.3 Save the RO/DO status during power off(Since firmware 1.3) ===
450 -
451 -
452 -Enable/Disbale retain Digital Output/Relay Output after power off / Power On
453 -
454 -**AT+DOROSAVE=0**  ~/~/ Disable Retain after power off/on
455 -
456 -**AT+DOROSAVE=1**  ~/~/ Enable Retain after power off/on
457 -
458 -**AT+DOROSAVE=2,a,b,c,d**  ~/~/ set DO/RO port to default state after power on.
459 -
460 -**a: **for DO1
461 -
462 -**b:** for DO2
463 -
464 -**c: **for RO1
465 -
466 -**d:** for RO2.
467 -
468 -
469 -**Example:**
470 -
471 -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.
472 -
473 -
474 -=== 2.3.4 Control Sleep status.(Since firmware 1.3) ===
475 -
476 -
477 -DI2 can be used to set LT into sleep mode.
478 -
479 -**AT+DI2SLEEP=1**  ~/~/  Enable DI2 as Sleep pin
480 -
481 -**AT+DI2SLEEP=0**  ~/~/  Disable DI2 as Sleep pin
482 -
483 -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.
484 -
485 -In sleep mode, DORO will keep its initial state if AT+DOROSAVE=2, otherwise DORO will be in OFF state
486 -
487 -
488 -== 2.4 Data Format ==
489 -
490 -
491 491  (((
492 -8 bytes of GROUPID + 9 bytes of payload + 4 bytes of checksum
390 +
493 493  )))
494 494  
495 495  (((
496 -(% style="color:blue" %)**Payload:Payload triggered by TDC or DI**
394 +(% style="color:#4f81bd" %)**Payload:**
497 497  )))
498 498  
499 -(% border="1" style="background-color:#f7faff; color:black; width:825px" %)
500 -|=(% style="width: 102px;" %)(((
397 +(% border="1" style="background-color:#f7faff; color:black; width:938px" %)
398 +|=(% style="width: 123px;" %)(((
501 501  **Size (bytes)**
502 -)))|=(% style="width: 74px;" %)(((
400 +)))|=(% style="width: 107px;" %)(((
503 503  1
504 -)))|=(% style="width: 72px;" %)(((
402 +)))|=(% style="width: 107px;" %)(((
505 505  1
506 -)))|=(% style="width: 47px;" %)(((
404 +)))|=(% style="width: 107px;" %)(((
507 507  1
508 -)))|=(% style="width: 83px;" %)(((
406 +)))|=(% style="width: 107px;" %)(((
509 509  1
510 -)))|=(% style="width: 90px;" %)(((
408 +)))|=(% style="width: 107px;" %)(((
511 511  1
512 -)))|=(% style="width: 92px;" %)(((
410 +)))|=(% style="width: 107px;" %)(((
513 513  1
514 -)))|=(% style="width: 78px;" %)(((
412 +)))|=(% style="width: 107px;" %)(((
515 515  1
516 -)))|=(% style="width: 91px;" %)(((
414 +)))|=(% style="width: 107px;" %)(((
517 517  1
518 -)))|=(% style="width: 91px;" %)(((
416 +)))|=(% style="width: 107px;" %)(((
519 519  1
520 520  )))
521 -|(% style="width:102px" %)(((
419 +|(% style="width:123px" %)(((
522 522  **Value**
523 -)))|(% style="width:74px" %)(((
421 +)))|(% style="width:38px" %)(((
524 524  address
525 -)))|(% style="width:72px" %)(((
423 +)))|(% style="width:70px" %)(((
526 526  request
527 -)))|(% style="width:47px" %)(((
425 +)))|(% style="width:52px" %)(((
528 528  ACK
529 -)))|(% style="width:83px" %)(((
427 +)))|(% style="width:127px" %)(((
530 530  (((
531 531  DI1&
430 +)))
431 +
432 +(((
532 532  DI1 level
533 533  )))
534 -)))|(% style="width:90px" %)(((
435 +)))|(% style="width:101px" %)(((
535 535  DI1TODO1
536 -)))|(% style="width:92px" %)(((
437 +)))|(% style="width:91px" %)(((
537 537  DI1TORO1
538 -)))|(% style="width:78px" %)(((
439 +)))|(% style="width:111px" %)(((
539 539  (((
540 540  DI2&
541 -DI2 leve
542 542  )))
543 -)))|(% style="width:91px" %)(((
544 -DI2TODO2
545 -)))|(% style="width:91px" %)(((
546 -DI2TORO2
547 -)))
548 548  
549 549  (((
550 -(% style="color:#037691" %)**The first byte**(%%)**:**  00 is the broadcast address, 01-08 is the RX group number.
445 +DI2 level
551 551  )))
552 -
553 -(((
554 -(% style="color:#037691" %)**The second byte**(%%)**:**  send mapping request when not 0, not request when it is 0.
555 -)))
556 -
557 -(((
558 -(% style="color:#037691" %)**The third byte**(%%)**:**  ACK returned to the sender after the mapping is completed.
559 -)))
560 -
561 -(((
562 -(((
563 -(% 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.
564 -)))
565 -)))
566 -
567 -(((
568 -(% style="color:#037691" %)**The Fifth byte**(%%)**:       **DI1TODO1 when the interrupt is triggered, 0 when the interrupt is not triggered.
569 -)))
570 -
571 -(((
572 -(% style="color:#037691" %)**The Sixth byte**(%%)**:**  0 does not trigger interrupt when DI1TORO1 interrupt is triggered.
573 -)))
574 -
575 -(((
576 -(((
577 -(% 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.
578 -)))
579 -)))
580 -
581 -(((
582 -(% style="color:#037691" %)**The 8th byte**(%%)**:          **DI2TODO2 when the interrupt is triggered, 0 when the interrupt is not triggered.
583 -)))
584 -
585 -(((
586 -(% style="color:#037691" %)**The 9th byte**(%%)**:**  DI2TORO2 when an interrupt is triggered, 0 when an interrupt is not triggered.
587 -)))
588 -
589 -(((
590 -
591 -
592 -(% style="color:blue" %)**Payload:（Since firmware 1.3）The receiver replies to the sent packet**
593 -)))
594 -
595 -(% border="1" style="background-color:#f7faff; color:black; width:822px" %)
596 -|=(% style="width: 97px;" %)(((
597 -**Size(bytes)**
598 -)))|=(% style="width: 71px;" %)(((
599 -1
600 -)))|=(% style="width: 70px;" %)(((
601 -1
602 -)))|=(% style="width: 48px;" %)(((
603 -1
604 -)))|=(% style="width: 85px;" %)(((
605 -1
606 -)))|=(% style="width: 90px;" %)(((
607 -1
608 -)))|=(% style="width: 88px;" %)(((
609 -1
610 -)))|=(% style="width: 86px;" %)(((
611 -1
612 -)))|=(% style="width: 92px;" %)(((
613 -1
614 -)))|=(% style="width: 92px;" %)(((
615 -1
616 -)))
617 -|(% style="width:97px" %)(((
618 -**Value**
619 -)))|(% style="width:71px" %)(((
620 -address
621 -)))|(% style="width:70px" %)(((
622 -request
623 -)))|(% style="width:48px" %)(((
624 -ACK
625 -)))|(% style="width:85px" %)(((
626 -(((
627 -DOI1&
628 -DOI2 level
629 -)))
630 -)))|(% style="width:90px" %)(((
631 -DI1TODO1
632 -)))|(% style="width:88px" %)(((
633 -DI1TORO1
634 -)))|(% style="width:86px" %)(((
635 -(((
636 -RO2&
637 -RO2 level
638 -)))
639 -)))|(% style="width:92px" %)(((
447 +)))|(% style="width:105px" %)(((
640 640  DI2TODO2
641 -)))|(% style="width:92px" %)(((
449 +)))|(% style="width:106px" %)(((
642 642  DI2TORO2
643 643  )))
644 644  
... ... @@ -656,7 +656,7 @@
656 656  
657 657  (((
658 658  (((
659 -(% 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.
660 660  )))
661 661  )))
662 662  
... ... @@ -670,7 +670,7 @@
670 670  
671 671  (((
672 672  (((
673 -(% 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.
674 674  )))
675 675  )))
676 676  

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