Changes for page Point to Point Communication of LT-22222-L
Last modified by Edwin Chen on 2022/11/22 09:38
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... ... @@ -1,1 +1,1 @@ 1 -Point to Point Communication of LT-22222-L 1 + Point to Point Communication of LT-22222-L - Content
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... ... @@ -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 ... ... @@ -17,37 +17,37 @@ 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 -== =2.1.1Overview===20 +== **2.1 Point To Point** == 26 26 22 +=== **2.1.1 Overview** === 27 27 28 28 [[image:image-20220602111219-1.png||height="472" width="972"]] 29 29 30 30 31 -=== 2.2.2 Configure === 27 +=== **2.2.2 Configure** === 32 32 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 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 45 45 42 +(% class="wikigeneratedid" %) 43 +2.2.3 Serial port display 46 46 47 47 48 -=== 2.2.3 Serial port display === 49 - 50 - 51 51 (% class="wikigeneratedid" %) 52 52 [[image:image-20220602111219-2.png]] 53 53 ... ... @@ -55,76 +55,23 @@ 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 == 64 64 65 -== =2.2.1Overview===58 +== **2.2 Point To Mult-Point ** == 66 66 67 67 68 -[[image:1654152390874-192.png]] 69 69 70 70 71 -=== 2.2.2 Configure === 72 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 - 122 122 ((( 123 - Ifthe 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.65 + 124 124 ))) 125 125 126 126 127 -== 2.3 AT command == 69 +== **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 ))) 227 227 170 +((( 171 + 172 +))) 228 228 229 229 ((( 230 - (%style="color:blue" %)**Example 1:**175 + 231 231 ))) 232 232 233 233 ((( 179 +(% style="color:#4f81bd" %)**Example 1:** 180 +))) 181 + 182 +((( 234 234 **AT+SEND=01020304 **will send a payload of 01020304 235 235 ))) 236 236 186 +((( 187 + 188 +))) 237 237 238 238 ((( 239 -(% style="color:b lue" %)**Example 2: **191 +(% 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;203 +a=0: falling edge; 252 252 ))) 253 253 254 254 ((( 255 - **a=1:**rising edge;207 +a=1: rising edge; 256 256 ))) 257 257 258 258 ((( 259 - **a=2:**falling edge or rising edge;211 +a=2: falling edge or rising edge; 260 260 ))) 261 261 262 262 ((( 263 - **b:**triggering time in milliseconds.215 +b: triggering time in milliseconds. 264 264 ))) 265 265 266 266 ((( 267 - **AT+TRIGx=2,50**219 +AT+TRIGx=2,50 Falling edge or rising edge trigger, and the trigger time exceeds 50ms. 268 268 ))) 269 269 222 +((( 223 + 224 +))) 270 270 271 271 ((( 272 -(% style="color:b lue" %)**Example 3: **227 +(% 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" %)250 +(% 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: 2 51px;" %)(((255 +)))|=(% 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:2 51px" %)(((262 +)))|(% 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:2 51px" %)(((269 +)))|(% 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:2 51px" %)(((282 +)))|(% 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:2 51px" %)(((295 +)))|(% style="width:268px" %)((( 341 341 ROx state flip 342 342 ))) 343 343 344 344 ((( 345 - 346 - 347 -(% style="color:blue" %)**Example 4: ** 300 +(% style="color:#4f81bd" %)**Example 4: ** 348 348 ))) 349 349 350 350 ((( ... ... @@ -356,8 +356,10 @@ 356 356 ))) 357 357 358 358 ((( 312 +((( 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 ))) 315 +))) 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 -== =2.3.1TRIG command is configured inthe transmitLT. (LT1)(Since firmware1.3)===330 +== **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 332 +((( 333 +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 - 8bytes of GROUPID + 9 bytes of payload + 4 bytes of checksum337 + 492 492 ))) 493 493 494 494 ((( 495 -(% style="color:b lue" %)**Payload:**341 +(% style="color:#4f81bd" %)**Payload:** 496 496 ))) 497 497 498 -(% border="1" style="background-color:#f7faff; color:black; width:8 25px" %)499 -|=(% style="width: 1 02px;" %)(((344 +(% border="1" style="background-color:#f7faff; color:black; width:938px" %) 345 +|=(% style="width: 123px;" %)((( 500 500 **Size (bytes)** 501 -)))|=(% style="width: 7 4px;" %)(((347 +)))|=(% style="width: 107px;" %)((( 502 502 1 503 -)))|=(% style="width: 7 2px;" %)(((349 +)))|=(% style="width: 107px;" %)((( 504 504 1 505 -)))|=(% style="width: 47px;" %)(((351 +)))|=(% style="width: 107px;" %)((( 506 506 1 507 -)))|=(% style="width: 83px;" %)(((353 +)))|=(% style="width: 107px;" %)((( 508 508 1 509 -)))|=(% style="width: 90px;" %)(((355 +)))|=(% style="width: 107px;" %)((( 510 510 1 511 -)))|=(% style="width: 92px;" %)(((357 +)))|=(% style="width: 107px;" %)((( 512 512 1 513 -)))|=(% style="width: 7 8px;" %)(((359 +)))|=(% style="width: 107px;" %)((( 514 514 1 515 -)))|=(% style="width: 91px;" %)(((361 +)))|=(% style="width: 107px;" %)((( 516 516 1 517 -)))|=(% style="width: 91px;" %)(((363 +)))|=(% style="width: 107px;" %)((( 518 518 1 519 519 ))) 520 -|(% style="width:1 02px" %)(((366 +|(% style="width:123px" %)((( 521 521 **Value** 522 -)))|(% style="width: 74px" %)(((368 +)))|(% style="width:38px" %)((( 523 523 address 524 -)))|(% style="width:7 2px" %)(((370 +)))|(% style="width:70px" %)((( 525 525 request 526 -)))|(% style="width: 47px" %)(((372 +)))|(% style="width:52px" %)((( 527 527 ACK 528 -)))|(% style="width: 83px" %)(((374 +)))|(% style="width:127px" %)((( 529 529 ((( 530 530 DI1& 377 +))) 378 + 379 +((( 531 531 DI1 level 532 532 ))) 533 -)))|(% style="width: 90px" %)(((382 +)))|(% style="width:101px" %)((( 534 534 DI1TODO1 535 -)))|(% style="width:9 2px" %)(((384 +)))|(% style="width:91px" %)((( 536 536 DI1TORO1 537 -)))|(% style="width: 78px" %)(((386 +)))|(% 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" %)**Thefirst byte**(%%)**:** 00 is the broadcast address, 01-08 is the RX group number.392 +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" %)((( 394 +)))|(% style="width:105px" %)((( 639 639 DI2TODO2 640 -)))|(% style="width: 92px" %)(((396 +)))|(% 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 D O1, and the low four bits are the level of DO1 when the interrupt is triggered.414 +(% 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 ofRO2 when the interrupt is triggered.428 +(% 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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