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 - Author
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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 ... ... @@ -17,36 +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 -=== 2.2.3 Serial port display === 48 48 49 - 50 50 (% class="wikigeneratedid" %) 51 51 [[image:image-20220602111219-2.png]] 52 52 ... ... @@ -54,76 +54,23 @@ 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 == 63 63 64 -== =2.2.1Overview===58 +== **2.2 Point To Mult-Point ** == 65 65 66 66 67 -[[image:1654152390874-192.png]] 68 68 69 69 70 -=== 2.2.2 Configure === 71 71 72 - 73 -(% style="color:blue" %)**Configuration of the TX group:** 74 - 75 -AT+GROUPMOD=0,2 76 - 77 -AT+TXCHS=868700000 78 - 79 -AT+RXCHS=869000000 80 - 81 -AT+TRIG1=2,50 82 - 83 -AT+TRIG2=2,50 84 - 85 -AT+DI1TODO1=1 86 - 87 -AT+DI1TORO1=1 88 - 89 -AT+DI2TODO2=1 90 - 91 -AT+DI2TORO2=1 92 - 93 - 94 -(% style="color:blue" %)**Configuration for RX group number 1:** 95 - 96 -AT+GROUPMOD=1,1 97 - 98 -AT+TXCHS=869000000 99 - 100 -AT+RXCHS=868700000 101 - 102 - 103 -(% style="color:blue" %)**Configuration for RX group number 2:** 104 - 105 -AT+GROUPMOD=1,2 106 - 107 -AT+TXCHS=869000000 108 - 109 -AT+RXCHS=868700000 110 - 111 - 112 -=== 2.2.3 Serial port display === 113 - 114 - 115 -[[image:image-20220602144747-1.png]] 116 - 117 - 118 -[[image:image-20220602144747-2.png]] 119 - 120 - 121 121 ((( 122 - 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 + 123 123 ))) 124 124 125 125 126 -== 2.3 AT command == 69 +== **2.3 AT command** == 127 127 128 128 129 129 ((( ... ... @@ -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 ))) 226 226 170 +((( 171 + 172 +))) 227 227 228 228 ((( 229 - (%style="color:blue" %)**Example 1:**175 + 230 230 ))) 231 231 232 232 ((( 179 +(% style="color:#4f81bd" %)**Example 1:** 180 +))) 181 + 182 +((( 233 233 **AT+SEND=01020304 **will send a payload of 01020304 234 234 ))) 235 235 186 +((( 187 + 188 +))) 236 236 237 237 ((( 238 -(% style="color:b lue" %)**Example 2: **191 +(% 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;203 +a=0: falling edge; 251 251 ))) 252 252 253 253 ((( 254 - **a=1:**rising edge;207 +a=1: rising edge; 255 255 ))) 256 256 257 257 ((( 258 - **a=2:**falling edge or rising edge;211 +a=2: falling edge or rising edge; 259 259 ))) 260 260 261 261 ((( 262 - **b:**triggering time in milliseconds.215 +b: triggering time in milliseconds. 263 263 ))) 264 264 265 265 ((( 266 - **AT+TRIGx=2,50**219 +AT+TRIGx=2,50 Falling edge or rising edge trigger, and the trigger time exceeds 50ms. 267 267 ))) 268 268 222 +((( 223 + 224 +))) 269 269 270 270 ((( 271 -(% style="color:b lue" %)**Example 3: **227 +(% 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" %)250 +(% 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: 2 51px;" %)(((255 +)))|=(% 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:2 51px" %)(((262 +)))|(% 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:2 51px" %)(((269 +)))|(% 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:2 51px" %)(((282 +)))|(% 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:2 51px" %)(((295 +)))|(% style="width:268px" %)((( 340 340 ROx state flip 341 341 ))) 342 342 343 343 ((( 344 - 345 - 346 -(% style="color:blue" %)**Example 4: ** 300 +(% style="color:#4f81bd" %)**Example 4: ** 347 347 ))) 348 348 349 349 ((( ... ... @@ -355,8 +355,10 @@ 355 355 ))) 356 356 357 357 ((( 312 +((( 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 ))) 315 +))) 360 360 361 361 ((( 362 362 **AT+GROUPMOD=0,2** Set to control the TX group of the two RX groups ... ... @@ -371,272 +371,73 @@ 371 371 ))) 372 372 373 373 374 -== =2.3.1TRIG command is configured inthe transmitLT. (LT1)(Since firmware1.3)===330 +== **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. 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 332 +((( 333 +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 - 486 -== 2.4 Data Format == 487 - 488 - 489 489 ((( 490 - 8bytes of GROUPID + 9 bytes of payload + 4 bytes of checksum337 + 491 491 ))) 492 492 493 493 ((( 494 -(% style="color:b lue" %)**Payload:**341 +(% style="color:#4f81bd" %)**Payload:** 495 495 ))) 496 496 497 -(% border="1" style="background-color:#f7faff; color:black; width:8 25px" %)498 -|=(% style="width: 1 02px;" %)(((344 +(% border="1" style="background-color:#f7faff; color:black; width:938px" %) 345 +|=(% style="width: 123px;" %)((( 499 499 **Size (bytes)** 500 -)))|=(% style="width: 7 4px;" %)(((347 +)))|=(% style="width: 107px;" %)((( 501 501 1 502 -)))|=(% style="width: 7 2px;" %)(((349 +)))|=(% style="width: 107px;" %)((( 503 503 1 504 -)))|=(% style="width: 47px;" %)(((351 +)))|=(% style="width: 107px;" %)((( 505 505 1 506 -)))|=(% style="width: 83px;" %)(((353 +)))|=(% style="width: 107px;" %)((( 507 507 1 508 -)))|=(% style="width: 90px;" %)(((355 +)))|=(% style="width: 107px;" %)((( 509 509 1 510 -)))|=(% style="width: 92px;" %)(((357 +)))|=(% style="width: 107px;" %)((( 511 511 1 512 -)))|=(% style="width: 7 8px;" %)(((359 +)))|=(% style="width: 107px;" %)((( 513 513 1 514 -)))|=(% style="width: 91px;" %)(((361 +)))|=(% style="width: 107px;" %)((( 515 515 1 516 -)))|=(% style="width: 91px;" %)(((363 +)))|=(% style="width: 107px;" %)((( 517 517 1 518 518 ))) 519 -|(% style="width:1 02px" %)(((366 +|(% style="width:123px" %)((( 520 520 **Value** 521 -)))|(% style="width: 74px" %)(((368 +)))|(% style="width:38px" %)((( 522 522 address 523 -)))|(% style="width:7 2px" %)(((370 +)))|(% style="width:70px" %)((( 524 524 request 525 -)))|(% style="width: 47px" %)(((372 +)))|(% style="width:52px" %)((( 526 526 ACK 527 -)))|(% style="width: 83px" %)(((374 +)))|(% style="width:127px" %)((( 528 528 ((( 529 529 DI1& 377 +))) 378 + 379 +((( 530 530 DI1 level 531 531 ))) 532 -)))|(% style="width: 90px" %)(((382 +)))|(% style="width:101px" %)((( 533 533 DI1TODO1 534 -)))|(% style="width:9 2px" %)(((384 +)))|(% style="width:91px" %)((( 535 535 DI1TORO1 536 -)))|(% style="width: 78px" %)(((386 +)))|(% style="width:111px" %)((( 537 537 ((( 538 538 DI2& 539 -DI2 leve 540 540 ))) 541 -)))|(% style="width:91px" %)((( 542 -DI2TODO2 543 -)))|(% style="width:91px" %)((( 544 -DI2TORO2 545 -))) 546 546 547 547 ((( 548 - (%style="color:#037691" %)**Thefirst byte**(%%)**:** 00 is the broadcast address, 01-08 is the RX group number.392 +DI2 level 549 549 ))) 550 - 551 -((( 552 -(% style="color:#037691" %)**The second byte**(%%)**:** send mapping request when not 0, not request when it is 0. 553 -))) 554 - 555 -((( 556 -(% style="color:#037691" %)**The third byte**(%%)**:** ACK returned to the sender after the mapping is completed. 557 -))) 558 - 559 -((( 560 -((( 561 -(% 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. 562 -))) 563 -))) 564 - 565 -((( 566 -(% style="color:#037691" %)**The Fifth byte**(%%)**: **DI1TODO1 when the interrupt is triggered, 0 when the interrupt is not triggered. 567 -))) 568 - 569 -((( 570 -(% style="color:#037691" %)**The Sixth byte**(%%)**:** 0 does not trigger interrupt when DI1TORO1 interrupt is triggered. 571 -))) 572 - 573 -((( 574 -((( 575 -(% 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. 576 -))) 577 -))) 578 - 579 -((( 580 -(% style="color:#037691" %)**The 8th byte**(%%)**: **DI2TODO2 when the interrupt is triggered, 0 when the interrupt is not triggered. 581 -))) 582 - 583 -((( 584 -(% style="color:#037691" %)**The 9th byte**(%%)**:** DI2TORO2 when an interrupt is triggered, 0 when an interrupt is not triggered. 585 -))) 586 - 587 -((( 588 - 589 - 590 -(% style="color:blue" %)**Payload:(Since firmware 1.3)The receiver replies to the sent packet** 591 -))) 592 - 593 -(% border="1" style="background-color:#f7faff; color:black; width:822px" %) 594 -|=(% style="width: 97px;" %)((( 595 -**Size(bytes)** 596 -)))|=(% style="width: 71px;" %)((( 597 -1 598 -)))|=(% style="width: 70px;" %)((( 599 -1 600 -)))|=(% style="width: 48px;" %)((( 601 -1 602 -)))|=(% style="width: 85px;" %)((( 603 -1 604 -)))|=(% style="width: 90px;" %)((( 605 -1 606 -)))|=(% style="width: 88px;" %)((( 607 -1 608 -)))|=(% style="width: 86px;" %)((( 609 -1 610 -)))|=(% style="width: 92px;" %)((( 611 -1 612 -)))|=(% style="width: 92px;" %)((( 613 -1 614 -))) 615 -|(% style="width:97px" %)((( 616 -**Value** 617 -)))|(% style="width:71px" %)((( 618 -address 619 -)))|(% style="width:70px" %)((( 620 -request 621 -)))|(% style="width:48px" %)((( 622 -ACK 623 -)))|(% style="width:85px" %)((( 624 -((( 625 -DOI1& 626 -DOI2 level 627 -))) 628 -)))|(% style="width:90px" %)((( 629 -DI1TODO1 630 -)))|(% style="width:88px" %)((( 631 -DI1TORO1 632 -)))|(% style="width:86px" %)((( 633 -((( 634 -RO2& 635 -RO2 level 636 -))) 637 -)))|(% style="width:92px" %)((( 394 +)))|(% style="width:105px" %)((( 638 638 DI2TODO2 639 -)))|(% style="width: 92px" %)(((396 +)))|(% style="width:106px" %)((( 640 640 DI2TORO2 641 641 ))) 642 642 ... ... @@ -654,7 +654,7 @@ 654 654 655 655 ((( 656 656 ((( 657 -(% style="color:#037691" %)**The fourth byte**(%%)**:** the high four bits are 1 to represent D OI1, and the low four bits are the level of DOI1 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. 658 658 ))) 659 659 ))) 660 660 ... ... @@ -668,7 +668,7 @@ 668 668 669 669 ((( 670 670 ((( 671 -(% 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. 672 672 ))) 673 673 ))) 674 674
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