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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... ... @@ -1,57 +1,126 @@ 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 - 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:** 29 +=== 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 ** == 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 46 + 47 +(% class="wikigeneratedid" %) 44 44 [[image:image-20220602111219-2.png]] 45 45 46 46 51 +(% class="wikigeneratedid" %) 47 47 [[image:image-20220602111219-3.png]] 48 48 49 -((( 54 + 55 +(% 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. 57 + 58 + 59 +== 2.2 Point To Mult-Point == 60 + 61 +=== 2.2.1 Overview === 62 + 63 + 64 +[[image:1654152390874-192.png]] 65 + 66 + 67 +=== 2.2.2 Configure === 68 + 69 + 70 +(% style="color:blue" %)**Configuration of the TX group:** 71 + 72 +AT+GROUPMOD=0,2 73 + 74 +AT+TXCHS=868700000 75 + 76 +AT+RXCHS=869000000 77 + 78 +AT+TRIG1=2,50 79 + 80 +AT+TRIG2=2,50 81 + 82 +AT+DI1TODO1=1 83 + 84 +AT+DI1TORO1=1 85 + 86 +AT+DI2TODO2=1 87 + 88 +AT+DI2TORO2=1 89 + 90 + 91 +(% style="color:blue" %)**Configuration for RX group number 1:** 92 + 93 +AT+GROUPMOD=1,1 94 + 95 +AT+TXCHS=869000000 96 + 97 +AT+RXCHS=868700000 98 + 99 + 100 +(% style="color:blue" %)**Configuration for RX group number 2:** 101 + 102 +AT+GROUPMOD=1,2 103 + 104 +AT+TXCHS=869000000 105 + 106 +AT+RXCHS=868700000 107 + 108 + 109 +=== 2.2.3 Serial port display === 110 + 111 + 112 +[[image:image-20220602144747-1.png]] 113 + 114 + 115 +[[image:image-20220602144747-2.png]] 116 + 117 + 118 +((( 119 +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**==123 +== 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 - 226 +(% 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: **235 +(% 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; 247 +**a=0:** falling edge; 189 189 ))) 190 190 191 191 ((( 192 -a=1: rising edge; 251 +**a=1: **rising edge; 193 193 ))) 194 194 195 195 ((( 196 -a=2: falling edge or rising edge; 255 +**a=2:** falling edge or rising edge; 197 197 ))) 198 198 199 199 ((( 200 -b: triggering time in milliseconds. 259 +**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. 263 +**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: **268 +(% 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" %)291 +(% 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: 2 68px;" %)(((296 +)))|=(% 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:2 68px" %)(((303 +)))|(% 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:2 68px" %)(((310 +)))|(% 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:2 68px" %)(((323 +)))|(% 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:2 68px" %)(((336 +)))|(% style="width:251px" %)((( 281 281 ROx state flip 282 282 ))) 283 283 284 284 ((( 285 -(% style="color:#4f81bd" %)**Example 4: ** 341 + 342 + 343 +(% 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 +312,288 @@ 312 312 ))) 313 313 314 314 315 -== **2.4DataFormat**==371 +=== 2.3.1 TRIG command is configured in the transmit LT. (LT1)(Since firmware 1.3.2) === 316 316 317 -((( 318 -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 transmit LT. (LT1) and receiver LT (LT2)(Since firmware 1.3.2) === 407 + 408 + 409 +(% style="color:red" %)Notice:(%%) LT1 MUST have a AT+DIxTODOx commands to send out the trigger. If LT2 has AT+DIxTOROx configured, LT2 will follow its configured and ignore LT1's AT+DIxTOROx settings. 410 + 411 + 412 +AT+DI1TODO1= maps value[,latch time, timeout_state] 413 + 414 +AT+DI1TORO1= maps value[,latch time, timeout_state] 415 + 416 +AT+DI2TODO2= maps value[,latch time, timeout_state] 417 + 418 +AT+DI2TORO2= maps value[,latch time, timeout_state] 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 319 319 ))) 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, 320 320 432 +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 +**Timeout_State**: 440 + 441 +0: **No change** after timeout 442 + 443 +1: Change to **DO:0** or **RO: Open** after timeout 444 + 445 +2: Change to **DO:1** or **RO: Close** after timeout 446 + 447 +3: Change **back to state** before last trigger arrive. 448 + 449 + 450 +(% style="color:blue" %)**Case1**: 451 + 452 +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. 453 + 454 + 455 +(% style="color:blue" %)**Case2**: 456 + 457 +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. 458 + 459 + 460 +=== 2.3.3 Save the RO/DO status during power off(Since firmware 1.3) === 461 + 462 + 463 +Enable/Disbale retain Digital Output/Relay Output after power off / Power On 464 + 465 +**AT+DOROSAVE=0** ~/~/ Disable Retain after power off/on 466 + 467 +**AT+DOROSAVE=1** ~/~/ Enable Retain after power off/on 468 + 469 +**AT+DOROSAVE=2,a,b,c,d** ~/~/ set DO/RO port to default state after power on. 470 + 471 +**a: **for DO1 472 + 473 +**b:** for DO2 474 + 475 +**c: **for RO1 476 + 477 +**d:** for RO2. 478 + 479 + 480 +**Example:** 481 + 482 +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. 483 + 484 + 485 +=== 2.3.4 Control Sleep status.(Since firmware 1.3) === 486 + 487 + 488 +DI2 can be used to set LT into sleep mode. 489 + 490 +**AT+DI2SLEEP=1** ~/~/ Enable DI2 as Sleep pin 491 + 492 +**AT+DI2SLEEP=0** ~/~/ Disable DI2 as Sleep pin 493 + 494 +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. 495 + 496 +In sleep mode, DORO will keep its initial state if AT+DOROSAVE=2, otherwise DORO will be in OFF state 497 + 498 + 499 +== 2.4 Data Format == 500 + 501 + 321 321 ((( 322 - 503 +8 bytes of GROUPID + 9 bytes of payload + 4 bytes of checksum 323 323 ))) 324 324 325 325 ((( 326 -(% style="color: #4f81bd" %)**Payload:**507 +(% style="color:blue" %)**Payload:Payload triggered by TDC or DI** 327 327 ))) 328 328 329 -(% border="1" style="background-color:#f7faff; color:black; width: 938px" %)330 -|=(% style="width: 12 3px;" %)(((510 +(% border="1" style="background-color:#f7faff; color:black; width:825px" %) 511 +|=(% style="width: 102px;" %)((( 331 331 **Size (bytes)** 332 -)))|=(% style="width: 107px;" %)(((513 +)))|=(% style="width: 74px;" %)((( 333 333 1 334 -)))|=(% style="width: 107px;" %)(((515 +)))|=(% style="width: 72px;" %)((( 335 335 1 336 -)))|=(% style="width: 107px;" %)(((517 +)))|=(% style="width: 47px;" %)((( 337 337 1 338 -)))|=(% style="width: 107px;" %)(((519 +)))|=(% style="width: 83px;" %)((( 339 339 1 340 -)))|=(% style="width: 107px;" %)(((521 +)))|=(% style="width: 90px;" %)((( 341 341 1 342 -)))|=(% style="width: 107px;" %)(((523 +)))|=(% style="width: 92px;" %)((( 343 343 1 344 -)))|=(% style="width: 107px;" %)(((525 +)))|=(% style="width: 78px;" %)((( 345 345 1 346 -)))|=(% style="width: 1 07px;" %)(((527 +)))|=(% style="width: 91px;" %)((( 347 347 1 348 -)))|=(% style="width: 1 07px;" %)(((529 +)))|=(% style="width: 91px;" %)((( 349 349 1 350 350 ))) 351 -|(% style="width:12 3px" %)(((532 +|(% style="width:102px" %)((( 352 352 **Value** 353 -)))|(% style="width: 38px" %)(((534 +)))|(% style="width:74px" %)((( 354 354 address 355 -)))|(% style="width:7 0px" %)(((536 +)))|(% style="width:72px" %)((( 356 356 request 357 -)))|(% style="width: 52px" %)(((538 +)))|(% style="width:47px" %)((( 358 358 ACK 359 -)))|(% style="width: 127px" %)(((540 +)))|(% style="width:83px" %)((( 360 360 ((( 361 361 DI1& 362 -))) 363 - 364 -((( 365 365 DI1 level 366 366 ))) 367 -)))|(% style="width: 101px" %)(((545 +)))|(% style="width:90px" %)((( 368 368 DI1TODO1 369 -)))|(% style="width:9 1px" %)(((547 +)))|(% style="width:92px" %)((( 370 370 DI1TORO1 371 -)))|(% style="width: 111px" %)(((549 +)))|(% style="width:78px" %)((( 372 372 ((( 373 373 DI2& 552 +DI2 leve 374 374 ))) 554 +)))|(% style="width:91px" %)((( 555 +DI2TODO2 556 +)))|(% style="width:91px" %)((( 557 +DI2TORO2 558 +))) 375 375 376 376 ((( 377 - DI2level561 +(% style="color:#037691" %)**The first byte**(%%)**:** 00 is the broadcast address, 01-08 is the RX group number. 378 378 ))) 379 -)))|(% style="width:105px" %)((( 563 + 564 +((( 565 +(% style="color:#037691" %)**The second byte**(%%)**:** send mapping request when not 0, not request when it is 0. 566 +))) 567 + 568 +((( 569 +(% style="color:#037691" %)**The third byte**(%%)**:** ACK returned to the sender after the mapping is completed. 570 +))) 571 + 572 +((( 573 +((( 574 +(% 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. 575 +))) 576 +))) 577 + 578 +((( 579 +(% style="color:#037691" %)**The Fifth byte**(%%)**: **DI1TODO1 when the interrupt is triggered, 0 when the interrupt is not triggered. 580 +))) 581 + 582 +((( 583 +(% style="color:#037691" %)**The Sixth byte**(%%)**:** 0 does not trigger interrupt when DI1TORO1 interrupt is triggered. 584 +))) 585 + 586 +((( 587 +((( 588 +(% 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. 589 +))) 590 +))) 591 + 592 +((( 593 +(% style="color:#037691" %)**The 8th byte**(%%)**: **DI2TODO2 when the interrupt is triggered, 0 when the interrupt is not triggered. 594 +))) 595 + 596 +((( 597 +(% style="color:#037691" %)**The 9th byte**(%%)**:** DI2TORO2 when an interrupt is triggered, 0 when an interrupt is not triggered. 598 +))) 599 + 600 +((( 601 + 602 + 603 +(% style="color:blue" %)**Payload:(Since firmware 1.3)The receiver replies to the sent packet** 604 +))) 605 + 606 +(% border="1" style="background-color:#f7faff; color:black; width:822px" %) 607 +|=(% style="width: 97px;" %)((( 608 +**Size(bytes)** 609 +)))|=(% style="width: 71px;" %)((( 610 +1 611 +)))|=(% style="width: 70px;" %)((( 612 +1 613 +)))|=(% style="width: 48px;" %)((( 614 +1 615 +)))|=(% style="width: 85px;" %)((( 616 +1 617 +)))|=(% style="width: 90px;" %)((( 618 +1 619 +)))|=(% style="width: 88px;" %)((( 620 +1 621 +)))|=(% style="width: 86px;" %)((( 622 +1 623 +)))|=(% style="width: 92px;" %)((( 624 +1 625 +)))|=(% style="width: 92px;" %)((( 626 +1 627 +))) 628 +|(% style="width:97px" %)((( 629 +**Value** 630 +)))|(% style="width:71px" %)((( 631 +address 632 +)))|(% style="width:70px" %)((( 633 +request 634 +)))|(% style="width:48px" %)((( 635 +ACK 636 +)))|(% style="width:85px" %)((( 637 +((( 638 +DOI1& 639 +DOI2 level 640 +))) 641 +)))|(% style="width:90px" %)((( 642 +DI1TODO1 643 +)))|(% style="width:88px" %)((( 644 +DI1TORO1 645 +)))|(% style="width:86px" %)((( 646 +((( 647 +RO2& 648 +RO2 level 649 +))) 650 +)))|(% style="width:92px" %)((( 380 380 DI2TODO2 381 -)))|(% style="width: 106px" %)(((652 +)))|(% 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 DI 1when the interrupt is triggered.670 +(% 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. 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 ofDI2 when the interrupt is triggered.684 +(% 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
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