Last modified by Edwin Chen on 2022/11/22 09:38
<
From version < 8.9 >
edited by Xiaoling
on 2022/06/02 14:23
To version < 19.2 >
edited by Xiaoling
on 2022/11/15 08:47
>
Change comment: There is no comment for this version

Summary

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Title
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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 +**Contents： **
2 +
2 2  {{toc/}}
3 -{{/box}}
4 4  
5 +
6 +
7 +
5 5  = **1. Overview** =
6 6  
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  
... ... @@ -12,20 +12,20 @@
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 17  = **2. Features for this firmware** =
18 18  
19 -
20 20  == **2.1  Point To Point** ==
21 21  
25 +=== **2.1.1 Overview** ===
22 22  
27 +
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  
33 +
29 29  (% border="1" style="background-color:#f7faff; color:black; width:500px" %)
30 30  |=**A's configuration**|=**B's configuration**
31 31  |AT+GROUPMOD=0|AT+GROUPMOD=0
... ... @@ -39,16 +39,82 @@
39 39  |AT+DI2TORO2=2|AT+DI2TORO2=2
40 40  
41 41  
42 -== **2.2  Point To Mult-Point ** ==
43 43  
48 +=== **2.2.3 Serial port display** ===
44 44  
50 +
51 +(% class="wikigeneratedid" %)
45 45  [[image:image-20220602111219-2.png]]
46 46  
47 47  
55 +(% class="wikigeneratedid" %)
48 48  [[image:image-20220602111219-3.png]]
49 49  
50 -(((
58 +
59 +(% class="wikigeneratedid" %)
51 51  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 +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.
52 52  )))
53 53  
54 54  
... ... @@ -55,154 +55,573 @@
55 55  == **2.3 AT command** ==
56 56  
57 57  
129 +(((
58 58  (% style="color:#037691" %)**ATZ** (%%)**: ** Trig a reset of the MCU
131 +)))
59 59  
133 +(((
60 60  (% style="color:#037691" %)**AT+FDR** (%%)**:**  Reset Parameters to Factory Default, Keys Reserve
135 +)))
61 61  
137 +(((
62 62  (% style="color:#037691" %)**AT+FCU** (%%)**:**  Get or Set the Frame Counter Uplink
139 +)))
63 63  
141 +(((
64 64  (% style="color:#037691" %)**AT+FCD** (%%)**:**  Get or Set the Frame Counter Downlink
143 +)))
65 65  
145 +(((
66 66  (% style="color:#037691" %)**AT+TXP** (%%)**:**  Get or Set the transmit power, the maximum is 20dBm (default is 14dBm)
147 +)))
67 67  
149 +(((
68 68  (% style="color:#037691" %)**AT+SYNC** (%%)**:**  Get or Set the Sync word [1:0x34,0:0x12] (default is 1)
151 +)))
69 69  
153 +(((
70 70  (% style="color:#037691" %)**AT+PMB** (%%)**:    **Get or Set the preamble (default:8)
155 +)))
71 71  
157 +(((
72 72  (% style="color:#037691" %)**AT+TXCHS **(%%)**:** Get or Set the transmit frequency of TX (default:868700000)
159 +)))
73 73  
161 +(((
74 74  (% style="color:#037691" %)**AT+TXSF **(%%)**:**  Get or Set the spreading factor of TX (7 to 12) (default:12)
163 +)))
75 75  
165 +(((
76 76  (% style="color:#037691" %)**AT+RXCHS **(%%)**:** Get or Set the transmit frequency of RX (default:869000000)
167 +)))
77 77  
169 +(((
78 78  (% style="color:#037691" %)**AT+RXSF **(%%)**:**  Get or Set the spreading factor of RX (7 to 12) (default:12)
171 +)))
79 79  
80 -(% style="color:#037691" %)**AT+BW **(%%)**:  **Get or Set the bandwidth [0:125khz,1:250khz,2:500khz] (default:0)
173 +(((
174 +(% style="color:#037691" %)**AT+BW **(%%)**:       **Get or Set the bandwidth [0:125khz,1:250khz,2:500khz] (default:0)
175 +)))
81 81  
177 +(((
82 82  (% style="color:#037691" %)**AT+CR **(%%)**:        **Get or Set the coding rate [1: 4/5, 2: 4/6, 3: 4/7, 4: 4/8] (default:1)
179 +)))
83 83  
181 +(((
84 84  (% style="color:#037691" %)**AT+TDC **(%%)**:**  Get or set the application data transmission interval in ms(default 10 minutes)
183 +)))
85 85  
185 +(((
86 86  (% style="color:#037691" %)**AT+VER **(%%)**:**  Get firmware version number
187 +)))
87 87  
88 -(% style="color:#037691" %)**AT+SEND **(%%)**:  **Set Custom sent hex data
189 +(((
190 +(% style="color:#037691" %)**AT+SEND **(%%)**:   **Set Custom sent hex data
191 +)))
89 89  
193 +(((
90 90  (% style="color:#037691" %)**AT+GROUPMOD **(%%)**: **Set or Get the grouping mode of the device (default: 0)
195 +)))
91 91  
197 +(((
198 +(((
92 92  (% style="color:#037691" %)**AT+GROUPID **(%%)**:      **Set or Get the password for matching between TX group and RX group, which can be composed of numbers or characters (default: 12345678)
200 +)))
201 +)))
93 93  
203 +(((
94 94  (% style="color:#037691" %)**AT+TRIG1 **(%%)**:**  Set or Get the DI1 pin interrupt trigger mode (default 0,0)
205 +)))
95 95  
207 +(((
96 96  (% style="color:#037691" %)**AT+TRIG2 **(%%)**:            **Set or Get the DI2 pin interrupt trigger mode (default 0,0)
209 +)))
97 97  
211 +(((
98 98  (% style="color:#037691" %)**AT+DI1TODO1 **(%%)**:    **Set or get the mode in which DI1 maps to DO1 (default 0)
213 +)))
99 99  
215 +(((
100 100  (% style="color:#037691" %)**AT+DI1TORO1 **(%%)**:    **Set or get the mode in which DI1 maps to RO1(default 0)
217 +)))
101 101  
219 +(((
102 102  (% style="color:#037691" %)**AT+DI2TODO2 **(%%)**:**  Set or get the mode in which DI2 maps to DO2(default 0)
221 +)))
103 103  
223 +(((
104 104  (% style="color:#037691" %)**AT+DI2TORO2 **(%%)**:    **Set or get the mode in which DI2 maps to RO2(default 0)
225 +)))
105 105  
106 106  
107 107  
229 +(((
108 108  (% style="color:#4f81bd" %)**Example 1:**
231 +)))
109 109  
233 +(((
110 110  **AT+SEND=01020304 **will send a payload of 01020304
235 +)))
111 111  
112 112  
113 -(% style="color:#4f81bd" %)**Example 2: **
114 114  
239 +(((
240 +(% style="color:blue" %)**Example 2: **
241 +)))
242 +
243 +(((
115 115  **AT+TRIGx=a    **Trigger directly without triggering time
245 +)))
116 116  
247 +(((
117 117  **AT+TRIGx=a,b**
249 +)))
118 118  
251 +(((
119 119  a=0: falling edge;
253 +)))
120 120  
255 +(((
121 121  a=1: rising edge;
257 +)))
122 122  
259 +(((
123 123  a=2: falling edge or rising edge;
261 +)))
124 124  
263 +(((
125 125  b:  triggering time in milliseconds.
265 +)))
126 126  
267 +(((
127 127  AT+TRIGx=2,50  Falling edge or rising edge trigger, and the trigger time exceeds 50ms.
269 +)))
128 128  
129 129  
130 -(% style="color:#4f81bd" %)**Example 3: **
272 +(((
273 +(% style="color:blue" %)**Example 3: **
274 +)))
131 131  
276 +(((
132 132  **AT+DI1TODO1= maps value**
278 +)))
133 133  
280 +(((
134 134  **AT+DI1TORO1= maps value**
282 +)))
135 135  
284 +(((
136 136  **AT+DI2TODO2= maps value**
286 +)))
137 137  
288 +(((
138 138  **AT+DI2TORO2= maps value**
290 +)))
139 139  
292 +(((
293 +
294 +)))
140 140  
141 141  (% border="1" style="background-color:#f7faff; color:black; width:706px" %)
142 -|=(% style="width: 102px;" %)Maps value|=(% style="width: 331px;" %)DIx to DOx|=(% style="width: 268px;" %)DIx to ROx
143 -|(% style="width:102px" %)0|(% style="width:331px" %)No Action|(% style="width:268px" %)No Action
144 -|(% style="width:102px" %)1|(% style="width:331px" %)If DIx is high, control DOx to output low level, If DIx is low, control DOx to output high level|(% style="width:268px" %)(((
297 +|=(% style="width: 102px;" %)(((
298 +Maps value
299 +)))|=(% style="width: 331px;" %)(((
300 +DIx to DOx
301 +)))|=(% style="width: 268px;" %)(((
302 +DIx to ROx
303 +)))
304 +|(% style="width:102px" %)(((
305 +0
306 +)))|(% style="width:331px" %)(((
307 +No Action
308 +)))|(% style="width:268px" %)(((
309 +No Action
310 +)))
311 +|(% style="width:102px" %)(((
312 +1
313 +)))|(% style="width:331px" %)(((
314 +If DIx is high, control DOx to output low level, If DIx is low, control DOx to output high level
315 +)))|(% style="width:268px" %)(((
316 +(((
145 145  If DIx is high, control ROx to close,
318 +)))
146 146  
320 +(((
147 147  if DIx is low, control ROx to open
148 148  )))
149 -|(% style="width:102px" %)2|(% style="width:331px" %)If DIx is high, control DOx to output high level, If DIx is low, control DOx to output low level|(% style="width:268px" %)(((
323 +)))
324 +|(% style="width:102px" %)(((
325 +2
326 +)))|(% style="width:331px" %)(((
327 +If DIx is high, control DOx to output high level, If DIx is low, control DOx to output low level
328 +)))|(% style="width:268px" %)(((
329 +(((
150 150  If DIx is high, control ROx to open,
331 +)))
151 151  
333 +(((
152 152  if DIx is low, control ROx to close
153 153  )))
154 -|(% style="width:102px" %)3|(% style="width:331px" %)DOx state flip|(% style="width:268px" %)ROx state flip
336 +)))
337 +|(% style="width:102px" %)(((
338 +3
339 +)))|(% style="width:331px" %)(((
340 +DOx state flip
341 +)))|(% style="width:268px" %)(((
342 +ROx state flip
343 +)))
155 155  
156 -(% style="color:#4f81bd" %)**Example 4: **
345 +(((
346 +(% style="color:blue" %)**Example 4: **
347 +)))
157 157  
349 +(((
158 158  **AT+GROUPMOD=0**  Set to point to point mode
351 +)))
159 159  
353 +(((
160 160  **AT+GROUPMOD=0,aa**  Set the TX group that controls the number of aa (The maximum value of aa is 8)
355 +)))
161 161  
357 +
358 +(((
162 162  **AT+GROUPMOD=1,bb**  Set to the RX group controlled by the TX group, numbered bb(The maximum value of aa is 8)
360 +)))
163 163  
362 +
363 +(((
164 164  **AT+GROUPMOD=0,2**  Set to control the TX group of the two RX groups
365 +)))
165 165  
367 +(((
166 166  **AT+GROUPMOD=1,1**  Set the RX group numbered 1
369 +)))
167 167  
371 +(((
168 168  **AT+GROUPMOD=1,2**  Set the RX group numbered 2
373 +)))
169 169  
170 170  
376 +=== 2.3.1 TRIG command is configured in the transmit LT. (LT1)(Since firmware 1.3) ===
377 +
378 +
379 +**AT+TRIGx=a     **Trigger transmit directly without triggering time
380 +
381 +**AT+TRIGx=a,b**  Trigger transmit with triggering time threshold
382 +
383 +**AT+TRIGx=a,b,c **Trigger transmit with triggering time threshold, and continue to transmit every xx seconds if DI status no change.
384 +
385 +
386 +a=0: falling edge;
387 +
388 +a=1: rising edge;
389 +
390 +a=2: falling edge or rising edge;
391 +
392 +b:  triggering time in milliseconds.
393 +
394 +c: transmit interval
395 +
396 +
397 +**(% 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)
398 +
399 +Command:
400 +
401 +AT+TRIG1=2,50  Falling edge or rising edge trigger, and the trigger time should exceed 50ms.
402 +
403 +
404 +**(% style="color:blue" %)Use Case 2: **(%%)Sync LT2 RO / DO status with LT1 every minute.
405 +
406 +Command:
407 +
408 +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.
409 +
410 +
411 +=== 2.3.2 RO/DO is configured in the receiver LT (LT2)(Since firmware 1.3) ===
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:706px" %)
423 +| **Maps value**|DIx to DOx|DIx to ROx
424 +|0|No Action|No Action
425 +|1|If DIx is high, control DOx to output low level, If DIx is low, control DOx to output high level|(((
426 +If DIx is high, control ROx to close,
427 +
428 +if DIx is low, control ROx to open
429 +)))
430 +|2|If DIx is high, control DOx to output high level, If DIx is low, control DOx to output low level|(((
431 +If DIx is high, control ROx to open,
432 +
433 +if DIx is low, control ROx to close
434 +)))
435 +|3|DOx state flip|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 +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 +DI2 can be used to set LT into sleep mode.
477 +
478 +AT+DI2SLEEP=1 ~/~/Enable DI2 as Sleep pin
479 +
480 +AT+DI2SLEEP=0 ~/~/Disable DI2 as Sleep pin
481 +
482 +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.
483 +
484 +
171 171  == **2.4 Data Format** ==
172 172  
487 +
488 +(((
173 173  8 bytes of GROUPID + 9 bytes of payload + 4 bytes of checksum
490 +)))
174 174  
492 +(((
493 +
494 +)))
175 175  
176 -(% style="color:#4f81bd" %)**Payload:**
496 +(((
497 +(% style="color:blue" %)**Payload:**
498 +)))
177 177  
178 178  (% border="1" style="background-color:#f7faff; color:black; width:938px" %)
179 -|=(% style="width: 123px;" %)**Size (bytes)**|=(% style="width: 107px;" %)1|=(% style="width: 107px;" %)1|=(% style="width: 107px;" %)1|=(% style="width: 107px;" %)1|=(% style="width: 107px;" %)1|=(% style="width: 107px;" %)1|=(% style="width: 107px;" %)1|=(% style="width: 107px;" %)1|=(% style="width: 107px;" %)1
180 -|(% style="width:123px" %)**Value**|(% style="width:38px" %)address|(% style="width:70px" %)request|(% style="width:52px" %)ACK|(% style="width:127px" %)(((
501 +|=(% style="width: 123px;" %)(((
502 +**Size (bytes)**
503 +)))|=(% style="width: 107px;" %)(((
504 +1
505 +)))|=(% style="width: 107px;" %)(((
506 +1
507 +)))|=(% style="width: 107px;" %)(((
508 +1
509 +)))|=(% style="width: 107px;" %)(((
510 +1
511 +)))|=(% style="width: 107px;" %)(((
512 +1
513 +)))|=(% style="width: 107px;" %)(((
514 +1
515 +)))|=(% style="width: 107px;" %)(((
516 +1
517 +)))|=(% style="width: 107px;" %)(((
518 +1
519 +)))|=(% style="width: 107px;" %)(((
520 +1
521 +)))
522 +|(% style="width:123px" %)(((
523 +**Value**
524 +)))|(% style="width:38px" %)(((
525 +address
526 +)))|(% style="width:70px" %)(((
527 +request
528 +)))|(% style="width:52px" %)(((
529 +ACK
530 +)))|(% style="width:127px" %)(((
531 +(((
181 181  DI1&
533 +)))
182 182  
535 +(((
183 183  DI1 level
184 -)))|(% style="width:101px" %)DI1TODO1|(% style="width:91px" %)DI1TORO1|(% style="width:111px" %)(((
537 +)))
538 +)))|(% style="width:101px" %)(((
539 +DI1TODO1
540 +)))|(% style="width:91px" %)(((
541 +DI1TORO1
542 +)))|(% style="width:111px" %)(((
543 +(((
185 185  DI2&
545 +)))
186 186  
547 +(((
187 187  DI2 level
188 -)))|(% style="width:105px" %)DI2TODO2|(% style="width:106px" %)DI2TORO2
549 +)))
550 +)))|(% style="width:105px" %)(((
551 +DI2TODO2
552 +)))|(% style="width:106px" %)(((
553 +DI2TORO2
554 +)))
189 189  
556 +(((
190 190  (% style="color:#037691" %)**The first byte**(%%)**:**  00 is the broadcast address, 01-08 is the RX group number.
558 +)))
191 191  
560 +(((
192 192  (% style="color:#037691" %)**The second byte**(%%)**:**  send mapping request when not 0, not request when it is 0.
562 +)))
193 193  
564 +(((
194 194  (% style="color:#037691" %)**The third byte**(%%)**:**  ACK returned to the sender after the mapping is completed.
566 +)))
195 195  
568 +(((
569 +(((
196 196  (% 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.
571 +)))
572 +)))
197 197  
574 +(((
198 198  (% style="color:#037691" %)**The Fifth byte**(%%)**:       **DI1TODO1 when the interrupt is triggered, 0 when the interrupt is not triggered.
576 +)))
199 199  
578 +(((
200 200  (% style="color:#037691" %)**The Sixth byte**(%%)**:**  0 does not trigger interrupt when DI1TORO1 interrupt is triggered.
580 +)))
201 201  
582 +(((
583 +(((
202 202  (% 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.
585 +)))
586 +)))
203 203  
588 +(((
204 204  (% style="color:#037691" %)**The 8th byte**(%%)**:          **DI2TODO2 when the interrupt is triggered, 0 when the interrupt is not triggered.
590 +)))
205 205  
592 +(((
206 206  (% style="color:#037691" %)**The 9th byte**(%%)**:**  DI2TORO2 when an interrupt is triggered, 0 when an interrupt is not triggered.
594 +)))
207 207  
596 +(((
208 208  
598 +
599 +(% style="color:#4f81bd" %)**Payload:（Since firmware 1.3）The receiver replies to the sent packet**
600 +)))
601 +
602 +(% border="1" style="background-color:#f7faff; color:black; width:938px" %)
603 +|=(% style="width: 123px;" %)(((
604 +**Size (bytes)**
605 +)))|=(% style="width: 107px;" %)(((
606 +1
607 +)))|=(% style="width: 107px;" %)(((
608 +1
609 +)))|=(% style="width: 107px;" %)(((
610 +1
611 +)))|=(% style="width: 107px;" %)(((
612 +1
613 +)))|=(% style="width: 107px;" %)(((
614 +1
615 +)))|=(% style="width: 107px;" %)(((
616 +1
617 +)))|=(% style="width: 107px;" %)(((
618 +1
619 +)))|=(% style="width: 107px;" %)(((
620 +1
621 +)))|=(% style="width: 107px;" %)(((
622 +1
623 +)))
624 +|(% style="width:123px" %)(((
625 +**Value**
626 +)))|(% style="width:38px" %)(((
627 +address
628 +)))|(% style="width:70px" %)(((
629 +request
630 +)))|(% style="width:52px" %)(((
631 +ACK
632 +)))|(% style="width:127px" %)(((
633 +(((
634 +DO1&
635 +)))
636 +
637 +(((
638 +DO1 level
639 +)))
640 +)))|(% style="width:101px" %)(((
641 +DI1TODO1
642 +)))|(% style="width:91px" %)(((
643 +DI1TORO1
644 +)))|(% style="width:111px" %)(((
645 +(((
646 +RO2&
647 +)))
648 +
649 +(((
650 +RO2 level
651 +)))
652 +)))|(% style="width:105px" %)(((
653 +DI2TODO2
654 +)))|(% style="width:106px" %)(((
655 +DI2TORO2
656 +)))
657 +
658 +(((
659 +(% style="color:#037691" %)**The first byte**(%%)**:**  00 is the broadcast address, 01-08 is the RX group number.
660 +)))
661 +
662 +(((
663 +(% style="color:#037691" %)**The second byte**(%%)**:**  send mapping request when not 0, not request when it is 0.
664 +)))
665 +
666 +(((
667 +(% style="color:#037691" %)**The third byte**(%%)**:**  ACK returned to the sender after the mapping is completed.
668 +)))
669 +
670 +(((
671 +(((
672 +(% 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.
673 +)))
674 +)))
675 +
676 +(((
677 +(% style="color:#037691" %)**The Fifth byte**(%%)**:       **DI1TODO1 when the interrupt is triggered, 0 when the interrupt is not triggered.
678 +)))
679 +
680 +(((
681 +(% style="color:#037691" %)**The Sixth byte**(%%)**:**  0 does not trigger interrupt when DI1TORO1 interrupt is triggered.
682 +)))
683 +
684 +(((
685 +(((
686 +(% 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.
687 +)))
688 +)))
689 +
690 +(((
691 +(% style="color:#037691" %)**The 8th byte**(%%)**:          **DI2TODO2 when the interrupt is triggered, 0 when the interrupt is not triggered.
692 +)))
693 +
694 +(((
695 +(% style="color:#037691" %)**The 9th byte**(%%)**:**  DI2TORO2 when an interrupt is triggered, 0 when an interrupt is not triggered.
696 +)))
697 +
698 +
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