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 - 1 +Point to Point Communication of LT-22222-L - Author
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... ... @@ -1,1 +1,1 @@ 1 -XWiki. Xiaoling1 +XWiki.Edwin - Content
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... ... @@ -1,50 +1,49 @@ 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 -))) 10 10 11 - (((12 -[[ Point to Point Softwarefor LT-22222-L>>https://github.com/dragino/LT-22222-L]].15 +* [[Source Code>>https://github.com/dragino/LT-22222-L]]. 16 +* [[Firmware>>https://github.com/dragino/LT-22222-L/releases]]. 13 13 ))) 14 14 15 -= ===19 += 2. Features for this firmware = 16 16 17 -= **2.Featuresforthisfirmware**=21 +== 2.1 Point To Point == 18 18 23 +=== 2.1.1 Overview === 19 19 20 -== **2.1 Point To Point** == 21 21 22 -=== **2.1.1 Overview** === 23 - 24 - 25 25 [[image:image-20220602111219-1.png||height="472" width="972"]] 26 26 27 27 28 -=== **2.2.2 Configure**===29 +=== 2.2.2 Configure === 29 29 30 30 31 -(% border="1" style="background-color:#f7faff; color:black; width: 500px" %)32 -|=**A's configuration**|=**B's configuration** 33 -|AT+GROUPMOD=0|AT+GROUPMOD=0 34 -|AT+TXCHS=868700000|AT+TXCHS=869000000 35 -|AT+RXCHS=869000000|AT+RXCHS=868700000 36 -|AT+TRIG1=2,50|AT+TRIG1=2,50 37 -|AT+TRIG2=2,50|AT+TRIG2=2,50 38 -|AT+DI1TODO1=2|AT+DI1TODO1=2 39 -|AT+DI1TORO1=2|AT+DI1TORO1=2 40 -|AT+DI2TODO2=2 |AT+DI2TODO2=2 41 -|AT+DI2TORO2=2|AT+DI2TORO2=2 32 +(% border="1" style="background-color:#f7faff; color:black; width:360px" %) 33 +|=(% style="width: 179px;" %)**A's configuration**|=(% style="width: 177px;" %)**B's configuration** 34 +|(% style="width:179px" %)AT+GROUPMOD=0|(% style="width:177px" %)AT+GROUPMOD=0 35 +|(% style="width:179px" %)AT+TXCHS=868700000|(% style="width:177px" %)AT+TXCHS=869000000 36 +|(% style="width:179px" %)AT+RXCHS=869000000|(% style="width:177px" %)AT+RXCHS=868700000 37 +|(% style="width:179px" %)AT+TRIG1=2,50|(% style="width:177px" %)AT+TRIG1=2,50 38 +|(% style="width:179px" %)AT+TRIG2=2,50|(% style="width:177px" %)AT+TRIG2=2,50 39 +|(% style="width:179px" %)AT+DI1TODO1=2|(% style="width:177px" %)AT+DI1TODO1=2 40 +|(% style="width:179px" %)AT+DI1TORO1=2|(% style="width:177px" %)AT+DI1TORO1=2 41 +|(% style="width:179px" %)AT+DI2TODO2=2 |(% style="width:177px" %)AT+DI2TODO2=2 42 +|(% style="width:179px" %)AT+DI2TORO2=2|(% style="width:177px" %)AT+DI2TORO2=2 42 42 44 +=== 2.2.3 Serial port display === 43 43 44 44 45 -=== **2.2.3 Serial port display** === 46 - 47 - 48 48 (% class="wikigeneratedid" %) 49 49 [[image:image-20220602111219-2.png]] 50 50 ... ... @@ -52,22 +52,23 @@ 52 52 (% class="wikigeneratedid" %) 53 53 [[image:image-20220602111219-3.png]] 54 54 54 + 55 55 (% class="wikigeneratedid" %) 56 56 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. 57 57 58 58 59 -== **2.2 Point To Mult-Point**==59 +== 2.2 Point To Mult-Point == 60 60 61 -=== **2.2.1 Overview**===61 +=== 2.2.1 Overview === 62 62 63 63 64 64 [[image:1654152390874-192.png]] 65 65 66 66 67 -=== **2.2.2 Configure**===67 +=== 2.2.2 Configure === 68 68 69 69 70 -(% style="color: #4f81bd" %)**Configuration of the TX group:**70 +(% style="color:blue" %)**Configuration of the TX group:** 71 71 72 72 AT+GROUPMOD=0,2 73 73 ... ... @@ -88,7 +88,7 @@ 88 88 AT+DI2TORO2=1 89 89 90 90 91 -(% style="color: #4f81bd" %)**Configuration for RX group number 1:**91 +(% style="color:blue" %)**Configuration for RX group number 1:** 92 92 93 93 AT+GROUPMOD=1,1 94 94 ... ... @@ -97,7 +97,7 @@ 97 97 AT+RXCHS=868700000 98 98 99 99 100 -(% style="color: #4f81bd" %)**Configuration for RX group number 2:**100 +(% style="color:blue" %)**Configuration for RX group number 2:** 101 101 102 102 AT+GROUPMOD=1,2 103 103 ... ... @@ -106,7 +106,7 @@ 106 106 AT+RXCHS=868700000 107 107 108 108 109 -=== **2.2.3 Serial port display**===109 +=== 2.2.3 Serial port display === 110 110 111 111 112 112 [[image:image-20220602144747-1.png]] ... ... @@ -114,16 +114,15 @@ 114 114 115 115 [[image:image-20220602144747-2.png]] 116 116 117 + 117 117 ((( 118 118 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. 119 119 ))) 120 120 121 121 123 +== 2.3 AT command == 122 122 123 123 124 -== **2.3 AT command** == 125 - 126 - 127 127 ((( 128 128 (% style="color:#037691" %)**ATZ** (%%)**: ** Trig a reset of the MCU 129 129 ))) ... ... @@ -222,28 +222,18 @@ 222 222 (% style="color:#037691" %)**AT+DI2TORO2 **(%%)**: **Set or get the mode in which DI2 maps to RO2(default 0) 223 223 ))) 224 224 225 -((( 226 - 227 -))) 228 228 229 229 ((( 230 - 226 +(% style="color:blue" %)**Example 1:** 231 231 ))) 232 232 233 233 ((( 234 -(% style="color:#4f81bd" %)**Example 1:** 235 -))) 236 - 237 -((( 238 238 **AT+SEND=01020304 **will send a payload of 01020304 239 239 ))) 240 240 241 -((( 242 - 243 -))) 244 244 245 245 ((( 246 -(% style="color: #4f81bd" %)**Example 2: **235 +(% style="color:blue" %)**Example 2: ** 247 247 ))) 248 248 249 249 ((( ... ... @@ -255,31 +255,28 @@ 255 255 ))) 256 256 257 257 ((( 258 -a=0: falling edge; 247 +**a=0:** falling edge; 259 259 ))) 260 260 261 261 ((( 262 -a=1: rising edge; 251 +**a=1: **rising edge; 263 263 ))) 264 264 265 265 ((( 266 -a=2: falling edge or rising edge; 255 +**a=2:** falling edge or rising edge; 267 267 ))) 268 268 269 269 ((( 270 -b: triggering time in milliseconds. 259 +**b:** triggering time in milliseconds. 271 271 ))) 272 272 273 273 ((( 274 -AT+TRIGx=2,50 Falling edge or rising edge trigger, and the trigger time exceeds 50ms. 263 +**AT+TRIGx=2,50** Falling edge or rising edge trigger, and the trigger time exceeds 50ms. 275 275 ))) 276 276 277 -((( 278 - 279 -))) 280 280 281 281 ((( 282 -(% style="color: #4f81bd" %)**Example 3: **268 +(% style="color:blue" %)**Example 3: ** 283 283 ))) 284 284 285 285 ((( ... ... @@ -302,12 +302,12 @@ 302 302 303 303 ))) 304 304 305 -(% border="1" style="background-color:#f7faff; color:black; width: 706px" %)291 +(% border="1" style="background-color:#f7faff; color:black; width:690px" %) 306 306 |=(% style="width: 102px;" %)((( 307 307 Maps value 308 308 )))|=(% style="width: 331px;" %)((( 309 309 DIx to DOx 310 -)))|=(% style="width: 2 68px;" %)(((296 +)))|=(% style="width: 251px;" %)((( 311 311 DIx to ROx 312 312 ))) 313 313 |(% style="width:102px" %)((( ... ... @@ -314,7 +314,7 @@ 314 314 0 315 315 )))|(% style="width:331px" %)((( 316 316 No Action 317 -)))|(% style="width:2 68px" %)(((303 +)))|(% style="width:251px" %)((( 318 318 No Action 319 319 ))) 320 320 |(% style="width:102px" %)((( ... ... @@ -321,7 +321,7 @@ 321 321 1 322 322 )))|(% style="width:331px" %)((( 323 323 If DIx is high, control DOx to output low level, If DIx is low, control DOx to output high level 324 -)))|(% style="width:2 68px" %)(((310 +)))|(% style="width:251px" %)((( 325 325 ((( 326 326 If DIx is high, control ROx to close, 327 327 ))) ... ... @@ -334,7 +334,7 @@ 334 334 2 335 335 )))|(% style="width:331px" %)((( 336 336 If DIx is high, control DOx to output high level, If DIx is low, control DOx to output low level 337 -)))|(% style="width:2 68px" %)(((323 +)))|(% style="width:251px" %)((( 338 338 ((( 339 339 If DIx is high, control ROx to open, 340 340 ))) ... ... @@ -347,12 +347,14 @@ 347 347 3 348 348 )))|(% style="width:331px" %)((( 349 349 DOx state flip 350 -)))|(% style="width:2 68px" %)(((336 +)))|(% style="width:251px" %)((( 351 351 ROx state flip 352 352 ))) 353 353 354 354 ((( 355 -(% style="color:#4f81bd" %)**Example 4: ** 341 + 342 + 343 +(% style="color:blue" %)**Example 4: ** 356 356 ))) 357 357 358 358 ((( ... ... @@ -364,10 +364,8 @@ 364 364 ))) 365 365 366 366 ((( 367 -((( 368 368 **AT+GROUPMOD=1,bb** Set to the RX group controlled by the TX group, numbered bb(The maximum value of aa is 8) 369 369 ))) 370 -))) 371 371 372 372 ((( 373 373 **AT+GROUPMOD=0,2** Set to control the TX group of the two RX groups ... ... @@ -382,73 +382,285 @@ 382 382 ))) 383 383 384 384 385 -== **2.4DataFormat**==371 +=== 2.3.1 TRIG command is configured in the transmit LT. (LT1)(Since firmware 1.3.2) === 386 386 387 -((( 388 -8 bytes of GROUPID + 9 bytes of payload + 4 bytes of checksum 373 + 374 +**AT+TRIGx=a **Trigger transmit directly without triggering time 375 + 376 +**AT+TRIGx=a,b** Trigger transmit with triggering time threshold 377 + 378 +**AT+TRIGx=a,b,c **Trigger transmit with triggering time threshold, and continue to transmit every xx seconds if DI status no change. 379 + 380 + 381 +**a=0:** falling edge; 382 + 383 +**a=1:** rising edge; 384 + 385 +**a=2:** falling edge or rising edge; 386 + 387 +**b:** triggering time in milliseconds. 388 + 389 +**c:** transmit interval 390 + 391 + 392 +(% 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) 393 + 394 +**Command:** 395 + 396 +**AT+TRIG1=2,50** Falling edge or rising edge trigger, and the trigger time should exceed 50ms. 397 + 398 + 399 +(% style="color:blue" %)**Use Case 2: **(%%)Sync LT2 RO / DO status with LT1 every minute. 400 + 401 +**Command:** 402 + 403 +**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. 404 + 405 + 406 +=== 2.3.2 RO/DO is configured in the receiver LT (LT2)(Since firmware 1.3.2) === 407 + 408 + 409 +AT+DI1TODO1= maps value[,latch time, timeout_state] 410 + 411 +AT+DI1TORO1= maps value[,latch time, timeout_state] 412 + 413 +AT+DI2TODO2= maps value[,latch time, timeout_state] 414 + 415 +AT+DI2TORO2= maps value[,latch time, timeout_state] 416 + 417 + 418 +(% border="1" style="background-color:#f7faff; color:black; width:774px" %) 419 +|(% style="width:105px" %) **Maps value**|(% style="width:415px" %)**DIx to DOx**|(% style="width:249px" %)**DIx to ROx** 420 +|(% style="width:105px" %)0|(% style="width:415px" %)No Action|(% style="width:249px" %)No Action 421 +|(% 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" %)((( 422 +If DIx is high, control ROx to close, 423 + 424 +if DIx is low, control ROx to open 389 389 ))) 426 +|(% 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" %)((( 427 +If DIx is high, control ROx to open, 390 390 429 +if DIx is low, control ROx to close 430 +))) 431 +|(% style="width:105px" %)3|(% style="width:415px" %)DOx state flip|(% style="width:249px" %)ROx state flip 432 + 433 +**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. 434 + 435 + 436 +**Timeout_State**: 437 + 438 +0: **No change** after timeout 439 + 440 +1: Change to **DO:0** or **RO: Open** after timeout 441 + 442 +2: Change to **DO:1** or **RO: Close** after timeout 443 + 444 +3: Change **back to state** before last trigger arrive. 445 + 446 + 447 +(% style="color:blue" %)**Case1**: 448 + 449 +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. 450 + 451 + 452 +(% style="color:blue" %)**Case2**: 453 + 454 +AT+DI1TODO1=1,60,1 ~/~/ LT2 DO1 will follow LT1 DI1 trigger command, DO1 will keep the status 60 seconds and then change to open. 455 + 456 + 457 +=== 2.3.3 Save the RO/DO status during power off(Since firmware 1.3) === 458 + 459 + 460 +Enable/Disbale retain Digital Output/Relay Output after power off / Power On 461 + 462 +**AT+DOROSAVE=0** ~/~/ Disable Retain after power off/on 463 + 464 +**AT+DOROSAVE=1** ~/~/ Enable Retain after power off/on 465 + 466 +**AT+DOROSAVE=2,a,b,c,d** ~/~/ set DO/RO port to default state after power on. 467 + 468 +**a: **for DO1 469 + 470 +**b:** for DO2 471 + 472 +**c: **for RO1 473 + 474 +**d:** for RO2. 475 + 476 + 477 +**Example:** 478 + 479 +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. 480 + 481 + 482 +=== 2.3.4 Control Sleep status.(Since firmware 1.3) === 483 + 484 + 485 +DI2 can be used to set LT into sleep mode. 486 + 487 +**AT+DI2SLEEP=1** ~/~/ Enable DI2 as Sleep pin 488 + 489 +**AT+DI2SLEEP=0** ~/~/ Disable DI2 as Sleep pin 490 + 491 +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. 492 + 493 +In sleep mode, DORO will keep its initial state if AT+DOROSAVE=2, otherwise DORO will be in OFF state 494 + 495 + 496 +== 2.4 Data Format == 497 + 498 + 391 391 ((( 392 - 500 +8 bytes of GROUPID + 9 bytes of payload + 4 bytes of checksum 393 393 ))) 394 394 395 395 ((( 396 -(% style="color: #4f81bd" %)**Payload:**504 +(% style="color:blue" %)**Payload:Payload triggered by TDC or DI** 397 397 ))) 398 398 399 -(% border="1" style="background-color:#f7faff; color:black; width: 938px" %)400 -|=(% style="width: 12 3px;" %)(((507 +(% border="1" style="background-color:#f7faff; color:black; width:825px" %) 508 +|=(% style="width: 102px;" %)((( 401 401 **Size (bytes)** 402 -)))|=(% style="width: 107px;" %)(((510 +)))|=(% style="width: 74px;" %)((( 403 403 1 404 -)))|=(% style="width: 107px;" %)(((512 +)))|=(% style="width: 72px;" %)((( 405 405 1 406 -)))|=(% style="width: 107px;" %)(((514 +)))|=(% style="width: 47px;" %)((( 407 407 1 408 -)))|=(% style="width: 107px;" %)(((516 +)))|=(% style="width: 83px;" %)((( 409 409 1 410 -)))|=(% style="width: 107px;" %)(((518 +)))|=(% style="width: 90px;" %)((( 411 411 1 412 -)))|=(% style="width: 107px;" %)(((520 +)))|=(% style="width: 92px;" %)((( 413 413 1 414 -)))|=(% style="width: 107px;" %)(((522 +)))|=(% style="width: 78px;" %)((( 415 415 1 416 -)))|=(% style="width: 1 07px;" %)(((524 +)))|=(% style="width: 91px;" %)((( 417 417 1 418 -)))|=(% style="width: 1 07px;" %)(((526 +)))|=(% style="width: 91px;" %)((( 419 419 1 420 420 ))) 421 -|(% style="width:12 3px" %)(((529 +|(% style="width:102px" %)((( 422 422 **Value** 423 -)))|(% style="width: 38px" %)(((531 +)))|(% style="width:74px" %)((( 424 424 address 425 -)))|(% style="width:7 0px" %)(((533 +)))|(% style="width:72px" %)((( 426 426 request 427 -)))|(% style="width: 52px" %)(((535 +)))|(% style="width:47px" %)((( 428 428 ACK 429 -)))|(% style="width: 127px" %)(((537 +)))|(% style="width:83px" %)((( 430 430 ((( 431 431 DI1& 432 -))) 433 - 434 -((( 435 435 DI1 level 436 436 ))) 437 -)))|(% style="width: 101px" %)(((542 +)))|(% style="width:90px" %)((( 438 438 DI1TODO1 439 -)))|(% style="width:9 1px" %)(((544 +)))|(% style="width:92px" %)((( 440 440 DI1TORO1 441 -)))|(% style="width: 111px" %)(((546 +)))|(% style="width:78px" %)((( 442 442 ((( 443 443 DI2& 549 +DI2 leve 444 444 ))) 551 +)))|(% style="width:91px" %)((( 552 +DI2TODO2 553 +)))|(% style="width:91px" %)((( 554 +DI2TORO2 555 +))) 445 445 446 446 ((( 447 - DI2level558 +(% style="color:#037691" %)**The first byte**(%%)**:** 00 is the broadcast address, 01-08 is the RX group number. 448 448 ))) 449 -)))|(% style="width:105px" %)((( 560 + 561 +((( 562 +(% style="color:#037691" %)**The second byte**(%%)**:** send mapping request when not 0, not request when it is 0. 563 +))) 564 + 565 +((( 566 +(% style="color:#037691" %)**The third byte**(%%)**:** ACK returned to the sender after the mapping is completed. 567 +))) 568 + 569 +((( 570 +((( 571 +(% 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. 572 +))) 573 +))) 574 + 575 +((( 576 +(% style="color:#037691" %)**The Fifth byte**(%%)**: **DI1TODO1 when the interrupt is triggered, 0 when the interrupt is not triggered. 577 +))) 578 + 579 +((( 580 +(% style="color:#037691" %)**The Sixth byte**(%%)**:** 0 does not trigger interrupt when DI1TORO1 interrupt is triggered. 581 +))) 582 + 583 +((( 584 +((( 585 +(% 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. 586 +))) 587 +))) 588 + 589 +((( 590 +(% style="color:#037691" %)**The 8th byte**(%%)**: **DI2TODO2 when the interrupt is triggered, 0 when the interrupt is not triggered. 591 +))) 592 + 593 +((( 594 +(% style="color:#037691" %)**The 9th byte**(%%)**:** DI2TORO2 when an interrupt is triggered, 0 when an interrupt is not triggered. 595 +))) 596 + 597 +((( 598 + 599 + 600 +(% style="color:blue" %)**Payload:(Since firmware 1.3)The receiver replies to the sent packet** 601 +))) 602 + 603 +(% border="1" style="background-color:#f7faff; color:black; width:822px" %) 604 +|=(% style="width: 97px;" %)((( 605 +**Size(bytes)** 606 +)))|=(% style="width: 71px;" %)((( 607 +1 608 +)))|=(% style="width: 70px;" %)((( 609 +1 610 +)))|=(% style="width: 48px;" %)((( 611 +1 612 +)))|=(% style="width: 85px;" %)((( 613 +1 614 +)))|=(% style="width: 90px;" %)((( 615 +1 616 +)))|=(% style="width: 88px;" %)((( 617 +1 618 +)))|=(% style="width: 86px;" %)((( 619 +1 620 +)))|=(% style="width: 92px;" %)((( 621 +1 622 +)))|=(% style="width: 92px;" %)((( 623 +1 624 +))) 625 +|(% style="width:97px" %)((( 626 +**Value** 627 +)))|(% style="width:71px" %)((( 628 +address 629 +)))|(% style="width:70px" %)((( 630 +request 631 +)))|(% style="width:48px" %)((( 632 +ACK 633 +)))|(% style="width:85px" %)((( 634 +((( 635 +DOI1& 636 +DOI2 level 637 +))) 638 +)))|(% style="width:90px" %)((( 639 +DI1TODO1 640 +)))|(% style="width:88px" %)((( 641 +DI1TORO1 642 +)))|(% style="width:86px" %)((( 643 +((( 644 +RO2& 645 +RO2 level 646 +))) 647 +)))|(% style="width:92px" %)((( 450 450 DI2TODO2 451 -)))|(% style="width: 106px" %)(((649 +)))|(% style="width:92px" %)((( 452 452 DI2TORO2 453 453 ))) 454 454 ... ... @@ -466,7 +466,7 @@ 466 466 467 467 ((( 468 468 ((( 469 -(% style="color:#037691" %)**The fourth byte**(%%)**:** the high four bits are 1 to represent DI1, and the low four bits are the level of DI 1when the interrupt is triggered.667 +(% 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. 470 470 ))) 471 471 ))) 472 472 ... ... @@ -480,7 +480,7 @@ 480 480 481 481 ((( 482 482 ((( 483 -(% style="color:#037691" %)**The seventh byte**(%%)**:** the high four bits are 2 to represent DI2, and the low four bits are the level ofDI2 when the interrupt is triggered.681 +(% 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. 484 484 ))) 485 485 ))) 486 486