Last modified by Edwin Chen on 2022/11/22 09:38
<
From version < 11.3 >
edited by Xiaoling
on 2022/06/02 14:34
To version < 19.3 >
edited by Xiaoling
on 2022/11/15 09:02
>
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
... ... @@ -1,10 +1,15 @@
1 -{{box cssClass="floatinginfobox" title="**Contents**"}}
1 +**Table of Contents： **
2 +
2 2  {{toc/}}
3 -{{/box}}
4 4  
5 -= **1. Overview** =
6 6  
6 +
7 +
8 += 1. Overview =
9 +
7 7  (((
11 +
12 +
8 8  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:
9 9  )))
10 10  
... ... @@ -12,46 +12,114 @@
12 12  [[Point to Point Software for LT-22222-L>>https://github.com/dragino/LT-22222-L]].
13 13  )))
14 14  
15 -== ==
16 16  
17 -= **2. Features for this firmware** =
21 += 2. Features for this firmware =
18 18  
23 +== 2.1  Point To Point ==
19 19  
20 -== **2.1  Point To Point** ==
25 +=== 2.1.1 Overview ===
21 21  
22 22  
23 23  [[image:image-20220602111219-1.png||height="472" width="972"]]
24 24  
25 25  
26 -(% class="wikigeneratedid" id="H2.2.Configure" %)
27 -(% style="color:blue" %)**Configure:**
31 +=== 2.2.2 Configure ===
28 28  
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
40 40  
41 -== **2.2  Point To Mult-Point ** ==
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
42 42  
43 43  
47 +
48 +=== 2.2.3 Serial port display ===
49 +
50 +
51 +(% class="wikigeneratedid" %)
44 44  [[image:image-20220602111219-2.png]]
45 45  
46 46  
55 +(% class="wikigeneratedid" %)
47 47  [[image:image-20220602111219-3.png]]
48 48  
49 -(((
58 +
59 +(% class="wikigeneratedid" %)
50 50  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 +
62 +
63 +== 2.2  Point To Mult-Point ==
64 +
65 +=== 2.2.1 Overview ===
66 +
67 +
68 +[[image:1654152390874-192.png]]
69 +
70 +
71 +=== 2.2.2  Configure ===
72 +
73 +
74 +(% style="color:blue" %)**Configuration of the TX group:**
75 +
76 +AT+GROUPMOD=0,2
77 +
78 +AT+TXCHS=868700000
79 +
80 +AT+RXCHS=869000000
81 +
82 +AT+TRIG1=2,50
83 +
84 +AT+TRIG2=2,50
85 +
86 +AT+DI1TODO1=1
87 +
88 +AT+DI1TORO1=1
89 +
90 +AT+DI2TODO2=1
91 +
92 +AT+DI2TORO2=1
93 +
94 +
95 +(% style="color:blue" %)**Configuration for RX group number 1:**
96 +
97 +AT+GROUPMOD=1,1
98 +
99 +AT+TXCHS=869000000
100 +
101 +AT+RXCHS=868700000
102 +
103 +
104 +(% style="color:blue" %)**Configuration for RX group number 2:**
105 +
106 +AT+GROUPMOD=1,2
107 +
108 +AT+TXCHS=869000000
109 +
110 +AT+RXCHS=868700000
111 +
112 +
113 +=== 2.2.3 Serial port display ===
114 +
115 +
116 +[[image:image-20220602144747-1.png]]
117 +
118 +
119 +[[image:image-20220602144747-2.png]]
120 +
121 +
122 +(((
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.
51 51  )))
52 52  
53 53  
54 -== **2.3 AT command** ==
127 +== 2.3 AT command ==
55 55  
56 56  
57 57  (((
... ... @@ -152,28 +152,18 @@
152 152  (% style="color:#037691" %)**AT+DI2TORO2 **(%%)**:    **Set or get the mode in which DI2 maps to RO2(default 0)
153 153  )))
154 154  
155 -(((
156 -
157 -)))
158 158  
159 159  (((
160 -
230 +(% style="color:blue" %)**Example 1:**
161 161  )))
162 162  
163 163  (((
164 -(% style="color:#4f81bd" %)**Example 1:**
165 -)))
166 -
167 -(((
168 168  **AT+SEND=01020304 **will send a payload of 01020304
169 169  )))
170 170  
171 -(((
172 -
173 -)))
174 174  
175 175  (((
176 -(% style="color:#4f81bd" %)**Example 2: **
239 +(% style="color:blue" %)**Example 2: **
177 177  )))
178 178  
179 179  (((
... ... @@ -185,31 +185,28 @@
185 185  )))
186 186  
187 187  (((
188 -a=0: falling edge;
251 +**a=0:** falling edge;
189 189  )))
190 190  
191 191  (((
192 -a=1: rising edge;
255 +**a=1: **rising edge;
193 193  )))
194 194  
195 195  (((
196 -a=2: falling edge or rising edge;
259 +**a=2:** falling edge or rising edge;
197 197  )))
198 198  
199 199  (((
200 -b:  triggering time in milliseconds.
263 +**b:**  triggering time in milliseconds.
201 201  )))
202 202  
203 203  (((
204 -AT+TRIGx=2,50  Falling edge or rising edge trigger, and the trigger time exceeds 50ms.
267 +**AT+TRIGx=2,50**  Falling edge or rising edge trigger, and the trigger time exceeds 50ms.
205 205  )))
206 206  
207 -(((
208 -
209 -)))
210 210  
211 211  (((
212 -(% style="color:#4f81bd" %)**Example 3: **
272 +(% style="color:blue" %)**Example 3: **
213 213  )))
214 214  
215 215  (((
... ... @@ -232,12 +232,12 @@
232 232  
233 233  )))
234 234  
235 -(% border="1" style="background-color:#f7faff; color:black; width:706px" %)
295 +(% border="1" style="background-color:#f7faff; color:black; width:690px" %)
236 236  |=(% style="width: 102px;" %)(((
237 237  Maps value
238 238  )))|=(% style="width: 331px;" %)(((
239 239  DIx to DOx
240 -)))|=(% style="width: 268px;" %)(((
300 +)))|=(% style="width: 251px;" %)(((
241 241  DIx to ROx
242 242  )))
243 243  |(% style="width:102px" %)(((
... ... @@ -244,7 +244,7 @@
244 244  0
245 245  )))|(% style="width:331px" %)(((
246 246  No Action
247 -)))|(% style="width:268px" %)(((
307 +)))|(% style="width:251px" %)(((
248 248  No Action
249 249  )))
250 250  |(% style="width:102px" %)(((
... ... @@ -251,7 +251,7 @@
251 251  1
252 252  )))|(% style="width:331px" %)(((
253 253  If DIx is high, control DOx to output low level, If DIx is low, control DOx to output high level
254 -)))|(% style="width:268px" %)(((
314 +)))|(% style="width:251px" %)(((
255 255  (((
256 256  If DIx is high, control ROx to close,
257 257  )))
... ... @@ -264,7 +264,7 @@
264 264  2
265 265  )))|(% style="width:331px" %)(((
266 266  If DIx is high, control DOx to output high level, If DIx is low, control DOx to output low level
267 -)))|(% style="width:268px" %)(((
327 +)))|(% style="width:251px" %)(((
268 268  (((
269 269  If DIx is high, control ROx to open,
270 270  )))
... ... @@ -277,12 +277,14 @@
277 277  3
278 278  )))|(% style="width:331px" %)(((
279 279  DOx state flip
280 -)))|(% style="width:268px" %)(((
340 +)))|(% style="width:251px" %)(((
281 281  ROx state flip
282 282  )))
283 283  
284 284  (((
285 -(% style="color:#4f81bd" %)**Example 4: **
345 +
346 +
347 +(% style="color:blue" %)**Example 4: **
286 286  )))
287 287  
288 288  (((
... ... @@ -294,10 +294,8 @@
294 294  )))
295 295  
296 296  (((
297 -(((
298 298  **AT+GROUPMOD=1,bb**  Set to the RX group controlled by the TX group, numbered bb(The maximum value of aa is 8)
299 299  )))
300 -)))
301 301  
302 302  (((
303 303  **AT+GROUPMOD=0,2**  Set to control the TX group of the two RX groups
... ... @@ -312,73 +312,272 @@
312 312  )))
313 313  
314 314  
315 -== **2.4 Data Format** ==
375 +=== 2.3.1 TRIG command is configured in the transmit LT. (LT1)(Since firmware 1.3) ===
316 316  
317 -(((
318 -8 bytes of GROUPID + 9 bytes of payload + 4 bytes of checksum
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
319 319  )))
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,
320 320  
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 +
321 321  (((
322 -
491 +8 bytes of GROUPID + 9 bytes of payload + 4 bytes of checksum
323 323  )))
324 324  
325 325  (((
326 -(% style="color:#4f81bd" %)**Payload:**
495 +(% style="color:blue" %)**Payload:**
327 327  )))
328 328  
329 -(% border="1" style="background-color:#f7faff; color:black; width:938px" %)
330 -|=(% style="width: 123px;" %)(((
498 +(% border="1" style="background-color:#f7faff; color:black; width:825px" %)
499 +|=(% style="width: 102px;" %)(((
331 331  **Size (bytes)**
332 -)))|=(% style="width: 107px;" %)(((
501 +)))|=(% style="width: 74px;" %)(((
333 333  1
334 -)))|=(% style="width: 107px;" %)(((
503 +)))|=(% style="width: 72px;" %)(((
335 335  1
336 -)))|=(% style="width: 107px;" %)(((
505 +)))|=(% style="width: 47px;" %)(((
337 337  1
338 -)))|=(% style="width: 107px;" %)(((
507 +)))|=(% style="width: 83px;" %)(((
339 339  1
340 -)))|=(% style="width: 107px;" %)(((
509 +)))|=(% style="width: 90px;" %)(((
341 341  1
342 -)))|=(% style="width: 107px;" %)(((
511 +)))|=(% style="width: 92px;" %)(((
343 343  1
344 -)))|=(% style="width: 107px;" %)(((
513 +)))|=(% style="width: 78px;" %)(((
345 345  1
346 -)))|=(% style="width: 107px;" %)(((
515 +)))|=(% style="width: 91px;" %)(((
347 347  1
348 -)))|=(% style="width: 107px;" %)(((
517 +)))|=(% style="width: 91px;" %)(((
349 349  1
350 350  )))
351 -|(% style="width:123px" %)(((
520 +|(% style="width:102px" %)(((
352 352  **Value**
353 -)))|(% style="width:38px" %)(((
522 +)))|(% style="width:74px" %)(((
354 354  address
355 -)))|(% style="width:70px" %)(((
524 +)))|(% style="width:72px" %)(((
356 356  request
357 -)))|(% style="width:52px" %)(((
526 +)))|(% style="width:47px" %)(((
358 358  ACK
359 -)))|(% style="width:127px" %)(((
528 +)))|(% style="width:83px" %)(((
360 360  (((
361 361  DI1&
362 -)))
363 -
364 -(((
365 365  DI1 level
366 366  )))
367 -)))|(% style="width:101px" %)(((
533 +)))|(% style="width:90px" %)(((
368 368  DI1TODO1
369 -)))|(% style="width:91px" %)(((
535 +)))|(% style="width:92px" %)(((
370 370  DI1TORO1
371 -)))|(% style="width:111px" %)(((
537 +)))|(% style="width:78px" %)(((
372 372  (((
373 373  DI2&
540 +DI2 leve
374 374  )))
542 +)))|(% style="width:91px" %)(((
543 +DI2TODO2
544 +)))|(% style="width:91px" %)(((
545 +DI2TORO2
546 +)))
375 375  
376 376  (((
377 -DI2 level
549 +(% style="color:#037691" %)**The first byte**(%%)**:**  00 is the broadcast address, 01-08 is the RX group number.
378 378  )))
379 -)))|(% style="width:105px" %)(((
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" %)(((
380 380  DI2TODO2
381 -)))|(% style="width:106px" %)(((
640 +)))|(% style="width:92px" %)(((
382 382  DI2TORO2
383 383  )))
384 384  
... ... @@ -396,7 +396,7 @@
396 396  
397 397  (((
398 398  (((
399 -(% 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.
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.
400 400  )))
401 401  )))
402 402  
... ... @@ -410,7 +410,7 @@
410 410  
411 411  (((
412 412  (((
413 -(% 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.
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.
414 414  )))
415 415  )))
416 416  
1654152390874-192.png
Author
... ... @@ -1,0 +1,1 @@
1 +XWiki.Xiaoling
Size
... ... @@ -1,0 +1,1 @@
1 +287.9 KB
Content
image-20220602144747-1.png
Author
... ... @@ -1,0 +1,1 @@
1 +XWiki.Xiaoling
Size
... ... @@ -1,0 +1,1 @@
1 +36.9 KB
Content
image-20220602144747-2.png
Author
... ... @@ -1,0 +1,1 @@
1 +XWiki.Xiaoling
Size
... ... @@ -1,0 +1,1 @@
1 +21.9 KB
Content

Applications

Navigation

Copyright ©2010-2022 Dragino Technology Co., LTD. All rights reserved
Dragino Wiki v2.0