Wiki source code of Point to Point Communication of LT-22222-L

Version 22.1 by Bei Jinggeng on 2022/11/15 10:41

version	line-number	content
19.3	1	Table of Contents：
16.2	2
1.1	3	{{toc/}}
	4
16.2	5
	6
	7
19.3	8	= 1. Overview =
1.1	9
6.1	10	(((
19.2	11
	12
1.1	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:
6.1	14	)))
1.1	15
6.1	16	(((
1.1	17	[[Point to Point Software for LT-22222-L>>https://github.com/dragino/LT-22222-L]].
6.1	18	)))
1.1	19
	20
19.3	21	= 2. Features for this firmware =
1.1	22
19.3	23	== 2.1 Point To Point ==
4.2	24
19.3	25	=== 2.1.1 Overview ===
8.1	26
15.4	27
8.2	28	[[image:image-20220602111219-1.png\|\|height="472" width="972"]]
4.2	29
	30
19.3	31	=== 2.2.2 Configure ===
4.2	32
15.3	33
19.3	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
4.2	45
19.3	46	=== 2.2.3 Serial port display ===
12.2	47
15.2	48
12.2	49	(% class="wikigeneratedid" %)
4.2	50	[[image:image-20220602111219-2.png]]
	51
	52
12.2	53	(% class="wikigeneratedid" %)
4.2	54	[[image:image-20220602111219-3.png]]
	55
19.2	56
12.2	57	(% class="wikigeneratedid" %)
	58	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.
	59
	60
19.4	61	== 2.2 Point To Mult-Point ==
12.2	62
19.3	63	=== 2.2.1 Overview ===
12.2	64
	65
15.2	66	[[image:1654152390874-192.png]]
12.2	67
	68
19.3	69	=== 2.2.2 Configure ===
15.2	70
	71
19.2	72	(% style="color:blue" %)Configuration of the TX group:
15.2	73
	74	AT+GROUPMOD=0,2
	75
	76	AT+TXCHS=868700000
	77
	78	AT+RXCHS=869000000
	79
	80	AT+TRIG1=2,50
	81
	82	AT+TRIG2=2,50
	83
	84	AT+DI1TODO1=1
	85
	86	AT+DI1TORO1=1
	87
	88	AT+DI2TODO2=1
	89
	90	AT+DI2TORO2=1
	91
	92
19.2	93	(% style="color:blue" %)Configuration for RX group number 1:
15.2	94
	95	AT+GROUPMOD=1,1
	96
	97	AT+TXCHS=869000000
	98
	99	AT+RXCHS=868700000
	100
	101
19.2	102	(% style="color:blue" %)Configuration for RX group number 2:
15.2	103
	104	AT+GROUPMOD=1,2
	105
	106	AT+TXCHS=869000000
	107
	108	AT+RXCHS=868700000
	109
	110
19.3	111	=== 2.2.3 Serial port display ===
15.2	112
	113
	114	[[image:image-20220602144747-1.png]]
	115
	116
	117	[[image:image-20220602144747-2.png]]
	118
19.3	119
8.9	120	(((
15.2	121	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.
8.9	122	)))
4.2	123
8.2	124
19.3	125	== 2.3 AT command ==
8.2	126
	127
11.3	128	(((
8.6	129	(% style="color:#037691" %)ATZ (%%): Trig a reset of the MCU
11.3	130	)))
8.2	131
11.3	132	(((
8.6	133	(% style="color:#037691" %)AT+FDR (%%): Reset Parameters to Factory Default, Keys Reserve
11.3	134	)))
8.2	135
11.3	136	(((
8.6	137	(% style="color:#037691" %)AT+FCU (%%): Get or Set the Frame Counter Uplink
11.3	138	)))
8.2	139
11.3	140	(((
8.6	141	(% style="color:#037691" %)AT+FCD (%%): Get or Set the Frame Counter Downlink
11.3	142	)))
8.2	143
11.3	144	(((
8.6	145	(% style="color:#037691" %)AT+TXP (%%): Get or Set the transmit power, the maximum is 20dBm (default is 14dBm)
11.3	146	)))
8.2	147
11.3	148	(((
8.8	149	(% style="color:#037691" %)AT+SYNC (%%): Get or Set the Sync word [1:0x34,0:0x12] (default is 1)
11.3	150	)))
8.2	151
11.3	152	(((
8.7	153	(% style="color:#037691" %)AT+PMB (%%): Get or Set the preamble (default:8)
11.3	154	)))
8.2	155
11.3	156	(((
8.6	157	(% style="color:#037691" %)AT+TXCHS (%%): Get or Set the transmit frequency of TX (default:868700000)
11.3	158	)))
8.2	159
11.3	160	(((
8.6	161	(% style="color:#037691" %)AT+TXSF (%%): Get or Set the spreading factor of TX (7 to 12) (default:12)
11.3	162	)))
8.2	163
11.3	164	(((
8.6	165	(% style="color:#037691" %)AT+RXCHS (%%): Get or Set the transmit frequency of RX (default:869000000)
11.3	166	)))
8.2	167
11.3	168	(((
8.6	169	(% style="color:#037691" %)AT+RXSF (%%): Get or Set the spreading factor of RX (7 to 12) (default:12)
11.3	170	)))
8.2	171
11.3	172	(((
9.2	173	(% style="color:#037691" %)AT+BW (%%): Get or Set the bandwidth [0:125khz,1:250khz,2:500khz] (default:0)
11.3	174	)))
8.2	175
11.3	176	(((
8.7	177	(% 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)
11.3	178	)))
8.2	179
11.3	180	(((
8.6	181	(% style="color:#037691" %)AT+TDC (%%): Get or set the application data transmission interval in ms(default 10 minutes)
11.3	182	)))
8.2	183
11.3	184	(((
8.8	185	(% style="color:#037691" %)AT+VER (%%): Get firmware version number
11.3	186	)))
8.2	187
11.3	188	(((
9.2	189	(% style="color:#037691" %)AT+SEND (%%): Set Custom sent hex data
11.3	190	)))
8.2	191
11.3	192	(((
8.6	193	(% style="color:#037691" %)AT+GROUPMOD (%%): Set or Get the grouping mode of the device (default: 0)
11.3	194	)))
8.2	195
11.1	196	(((
11.3	197	(((
8.7	198	(% 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)
11.1	199	)))
11.3	200	)))
8.2	201
11.3	202	(((
8.6	203	(% style="color:#037691" %)AT+TRIG1 (%%): Set or Get the DI1 pin interrupt trigger mode (default 0,0)
11.3	204	)))
8.2	205
11.3	206	(((
8.7	207	(% style="color:#037691" %)AT+TRIG2 (%%): Set or Get the DI2 pin interrupt trigger mode (default 0,0)
11.3	208	)))
8.2	209
11.3	210	(((
8.7	211	(% style="color:#037691" %)AT+DI1TODO1 (%%): Set or get the mode in which DI1 maps to DO1 (default 0)
11.3	212	)))
8.2	213
11.3	214	(((
8.7	215	(% style="color:#037691" %)AT+DI1TORO1 (%%): Set or get the mode in which DI1 maps to RO1(default 0)
11.3	216	)))
8.2	217
11.3	218	(((
8.6	219	(% style="color:#037691" %)AT+DI2TODO2 (%%): Set or get the mode in which DI2 maps to DO2(default 0)
11.3	220	)))
8.2	221
11.3	222	(((
8.7	223	(% style="color:#037691" %)AT+DI2TORO2 (%%): Set or get the mode in which DI2 maps to RO2(default 0)
11.3	224	)))
8.2	225
	226
11.3	227	(((
19.3	228	(% style="color:blue" %)Example 1:
11.3	229	)))
8.2	230
11.3	231	(((
8.7	232	AT+SEND=01020304 will send a payload of 01020304
11.3	233	)))
8.2	234
	235
11.3	236	(((
19.2	237	(% style="color:blue" %)Example 2:
11.3	238	)))
8.2	239
11.3	240	(((
8.8	241	AT+TRIGx=a Trigger directly without triggering time
11.3	242	)))
8.2	243
11.3	244	(((
8.7	245	AT+TRIGx=a,b
11.3	246	)))
8.2	247
11.3	248	(((
19.3	249	a=0: falling edge;
11.3	250	)))
8.2	251
11.3	252	(((
19.3	253	a=1: rising edge;
11.3	254	)))
8.2	255
11.3	256	(((
19.3	257	a=2: falling edge or rising edge;
11.3	258	)))
8.2	259
11.3	260	(((
19.3	261	b: triggering time in milliseconds.
11.3	262	)))
8.2	263
11.3	264	(((
19.3	265	AT+TRIGx=2,50 Falling edge or rising edge trigger, and the trigger time exceeds 50ms.
11.3	266	)))
8.2	267
	268
11.3	269	(((
19.2	270	(% style="color:blue" %)Example 3:
11.3	271	)))
8.2	272
11.3	273	(((
8.7	274	AT+DI1TODO1= maps value
11.3	275	)))
8.2	276
11.3	277	(((
8.7	278	AT+DI1TORO1= maps value
11.3	279	)))
8.2	280
11.3	281	(((
8.7	282	AT+DI2TODO2= maps value
11.3	283	)))
8.2	284
11.3	285	(((
8.7	286	AT+DI2TORO2= maps value
11.3	287	)))
8.7	288
11.3	289	(((
	290
	291	)))
8.7	292
19.3	293	(% border="1" style="background-color:#f7faff; color:black; width:690px" %)
11.3	294	\|=(% style="width: 102px;" %)(((
	295	Maps value
	296	)))\|=(% style="width: 331px;" %)(((
	297	DIx to DOx
19.3	298	)))\|=(% style="width: 251px;" %)(((
11.3	299	DIx to ROx
	300	)))
	301	\|(% style="width:102px" %)(((
	302	0
	303	)))\|(% style="width:331px" %)(((
	304	No Action
19.3	305	)))\|(% style="width:251px" %)(((
11.3	306	No Action
	307	)))
	308	\|(% style="width:102px" %)(((
	309	1
	310	)))\|(% style="width:331px" %)(((
	311	If DIx is high, control DOx to output low level, If DIx is low, control DOx to output high level
19.3	312	)))\|(% style="width:251px" %)(((
11.3	313	(((
8.2	314	If DIx is high, control ROx to close,
11.3	315	)))
8.2	316
11.3	317	(((
8.2	318	if DIx is low, control ROx to open
	319	)))
11.3	320	)))
	321	\|(% style="width:102px" %)(((
	322	2
	323	)))\|(% style="width:331px" %)(((
	324	If DIx is high, control DOx to output high level, If DIx is low, control DOx to output low level
19.3	325	)))\|(% style="width:251px" %)(((
11.3	326	(((
8.2	327	If DIx is high, control ROx to open,
11.3	328	)))
8.2	329
11.3	330	(((
8.2	331	if DIx is low, control ROx to close
	332	)))
11.3	333	)))
	334	\|(% style="width:102px" %)(((
	335	3
	336	)))\|(% style="width:331px" %)(((
	337	DOx state flip
19.3	338	)))\|(% style="width:251px" %)(((
11.3	339	ROx state flip
	340	)))
8.2	341
11.3	342	(((
19.3	343
	344
19.2	345	(% style="color:blue" %)Example 4:
11.3	346	)))
8.2	347
11.3	348	(((
8.7	349	AT+GROUPMOD=0 Set to point to point mode
11.3	350	)))
8.2	351
11.3	352	(((
8.7	353	AT+GROUPMOD=0,aa Set the TX group that controls the number of aa (The maximum value of aa is 8)
11.3	354	)))
8.2	355
11.1	356	(((
8.7	357	AT+GROUPMOD=1,bb Set to the RX group controlled by the TX group, numbered bb(The maximum value of aa is 8)
11.1	358	)))
8.2	359
11.3	360	(((
8.7	361	AT+GROUPMOD=0,2 Set to control the TX group of the two RX groups
11.3	362	)))
8.2	363
11.3	364	(((
8.7	365	AT+GROUPMOD=1,1 Set the RX group numbered 1
11.3	366	)))
8.2	367
11.3	368	(((
8.7	369	AT+GROUPMOD=1,2 Set the RX group numbered 2
19.2	370	)))
19.1	371
	372
	373	=== 2.3.1 TRIG command is configured in the transmit LT. (LT1)(Since firmware 1.3) ===
8.2	374
19.2	375
19.4	376	AT+TRIGx=a Trigger transmit directly without triggering time
8.2	377
19.3	378	AT+TRIGx=a,b Trigger transmit with triggering time threshold
19.1	379
19.4	380	AT+TRIGx=a,b,c Trigger transmit with triggering time threshold, and continue to transmit every xx seconds if DI status no change.
19.1	381
	382
19.3	383	a=0: falling edge;
19.1	384
19.3	385	a=1: rising edge;
19.1	386
19.3	387	a=2: falling edge or rising edge;
19.1	388
19.3	389	b: triggering time in milliseconds.
19.1	390
19.3	391	c: transmit interval
19.1	392
	393
19.3	394	(% 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)
19.1	395
19.3	396	Command:
19.1	397
19.3	398	AT+TRIG1=2,50 Falling edge or rising edge trigger, and the trigger time should exceed 50ms.
19.1	399
	400
19.3	401	(% style="color:blue" %)Use Case 2: (%%)Sync LT2 RO / DO status with LT1 every minute.
19.1	402
19.3	403	Command:
19.1	404
19.3	405	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.
19.1	406
	407
	408	=== 2.3.2 RO/DO is configured in the receiver LT (LT2)(Since firmware 1.3) ===
	409
19.3	410
19.1	411	AT+DI1TODO1= maps value[,latch time]
	412
	413	AT+DI1TORO1= maps value[,latch time]
	414
	415	AT+DI2TODO2= maps value[,latch time]
	416
	417	AT+DI2TORO2= maps value[,latch time]
	418
	419
19.3	420	(% border="1" style="background-color:#f7faff; color:black; width:774px" %)
	421	\|(% style="width:105px" %) Maps value\|(% style="width:415px" %)DIx to DOx\|(% style="width:249px" %)DIx to ROx
	422	\|(% style="width:105px" %)0\|(% style="width:415px" %)No Action\|(% style="width:249px" %)No Action
	423	\|(% 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" %)(((
19.1	424	If DIx is high, control ROx to close,
	425
	426	if DIx is low, control ROx to open
	427	)))
19.3	428	\|(% 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" %)(((
19.1	429	If DIx is high, control ROx to open,
	430
	431	if DIx is low, control ROx to close
	432	)))
19.3	433	\|(% style="width:105px" %)3\|(% style="width:415px" %)DOx state flip\|(% style="width:249px" %)ROx state flip
19.1	434
	435	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.
	436
	437
19.3	438	(% style="color:blue" %)Case1:
19.1	439
19.4	440	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.
19.1	441
	442
19.3	443	(% style="color:blue" %)Case2:
19.1	444
19.4	445	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.
19.1	446
	447
	448	=== 2.3.3 Save the RO/DO status during power off(Since firmware 1.3) ===
	449
19.2	450
19.1	451	Enable/Disbale retain Digital Output/Relay Output after power off / Power On
	452
19.4	453	AT+DOROSAVE=0 ~/~/ Disable Retain after power off/on
19.1	454
19.4	455	AT+DOROSAVE=1 ~/~/ Enable Retain after power off/on
19.1	456
19.4	457	AT+DOROSAVE=2,a,b,c,d ~/~/ set DO/RO port to default state after power on.
19.1	458
19.4	459	a: for DO1
19.1	460
19.4	461	b: for DO2
19.1	462
19.4	463	c: for RO1
19.1	464
19.4	465	d: for RO2.
19.1	466
	467
19.3	468	Example:
19.1	469
19.3	470	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.
19.1	471
19.3	472
19.1	473	=== 2.3.4 Control Sleep status.(Since firmware 1.3) ===
	474
19.3	475
19.1	476	DI2 can be used to set LT into sleep mode.
	477
19.4	478	AT+DI2SLEEP=1 ~/~/ Enable DI2 as Sleep pin
19.1	479
19.4	480	AT+DI2SLEEP=0 ~/~/ Disable DI2 as Sleep pin
19.1	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
22.1	484	In sleep mode, DORO will keep its initial state if AT+DOROSAVE=2, otherwise DORO will be in OFF state
19.1	485
22.1	486
19.3	487	== 2.4 Data Format ==
8.2	488
19.2	489
11.3	490	(((
8.2	491	8 bytes of GROUPID + 9 bytes of payload + 4 bytes of checksum
11.3	492	)))
8.2	493
11.3	494	(((
22.1	495	(% style="color:blue" %)Payload:Payload triggered by TDC or DI
11.3	496	)))
8.2	497
19.3	498	(% border="1" style="background-color:#f7faff; color:black; width:825px" %)
	499	\|=(% style="width: 102px;" %)(((
11.3	500	Size (bytes)
19.3	501	)))\|=(% style="width: 74px;" %)(((
11.3	502	1
19.3	503	)))\|=(% style="width: 72px;" %)(((
11.3	504	1
19.3	505	)))\|=(% style="width: 47px;" %)(((
11.3	506	1
19.3	507	)))\|=(% style="width: 83px;" %)(((
11.3	508	1
19.3	509	)))\|=(% style="width: 90px;" %)(((
11.3	510	1
19.3	511	)))\|=(% style="width: 92px;" %)(((
11.3	512	1
19.3	513	)))\|=(% style="width: 78px;" %)(((
11.3	514	1
19.3	515	)))\|=(% style="width: 91px;" %)(((
11.3	516	1
19.3	517	)))\|=(% style="width: 91px;" %)(((
11.3	518	1
	519	)))
19.3	520	\|(% style="width:102px" %)(((
11.3	521	Value
19.3	522	)))\|(% style="width:74px" %)(((
11.3	523	address
19.3	524	)))\|(% style="width:72px" %)(((
11.3	525	request
19.3	526	)))\|(% style="width:47px" %)(((
11.3	527	ACK
19.3	528	)))\|(% style="width:83px" %)(((
11.3	529	(((
8.2	530	DI1&
	531	DI1 level
11.3	532	)))
19.3	533	)))\|(% style="width:90px" %)(((
11.3	534	DI1TODO1
19.3	535	)))\|(% style="width:92px" %)(((
11.3	536	DI1TORO1
19.3	537	)))\|(% style="width:78px" %)(((
11.3	538	(((
8.2	539	DI2&
19.3	540	DI2 leve
11.3	541	)))
19.3	542	)))\|(% style="width:91px" %)(((
11.3	543	DI2TODO2
19.3	544	)))\|(% style="width:91px" %)(((
11.3	545	DI2TORO2
	546	)))
8.2	547
11.3	548	(((
8.5	549	(% style="color:#037691" %)The first byte(%%): 00 is the broadcast address, 01-08 is the RX group number.
11.3	550	)))
8.2	551
11.3	552	(((
8.5	553	(% style="color:#037691" %)The second byte(%%): send mapping request when not 0, not request when it is 0.
11.3	554	)))
8.2	555
11.3	556	(((
8.5	557	(% style="color:#037691" %)The third byte(%%): ACK returned to the sender after the mapping is completed.
11.3	558	)))
8.2	559
11.1	560	(((
11.3	561	(((
8.5	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.
11.1	563	)))
11.3	564	)))
8.2	565
11.3	566	(((
8.6	567	(% style="color:#037691" %)The Fifth byte(%%): DI1TODO1 when the interrupt is triggered, 0 when the interrupt is not triggered.
11.3	568	)))
8.2	569
11.3	570	(((
8.5	571	(% style="color:#037691" %)The Sixth byte(%%): 0 does not trigger interrupt when DI1TORO1 interrupt is triggered.
11.3	572	)))
8.2	573
11.1	574	(((
11.3	575	(((
8.5	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.
11.1	577	)))
11.3	578	)))
8.2	579
11.3	580	(((
8.6	581	(% style="color:#037691" %)The 8th byte(%%): DI2TODO2 when the interrupt is triggered, 0 when the interrupt is not triggered.
11.3	582	)))
8.2	583
11.3	584	(((
8.5	585	(% style="color:#037691" %)The 9th byte(%%): DI2TORO2 when an interrupt is triggered, 0 when an interrupt is not triggered.
11.3	586	)))
8.2	587
19.1	588	(((
1.1	589
19.1	590
19.3	591	(% style="color:blue" %)Payload:（Since firmware 1.3）The receiver replies to the sent packet
19.1	592	)))
	593
19.3	594	(% border="1" style="background-color:#f7faff; color:black; width:822px" %)
	595	\|=(% style="width: 97px;" %)(((
	596	Size(bytes)
	597	)))\|=(% style="width: 71px;" %)(((
19.1	598	1
19.3	599	)))\|=(% style="width: 70px;" %)(((
19.1	600	1
19.3	601	)))\|=(% style="width: 48px;" %)(((
19.1	602	1
19.3	603	)))\|=(% style="width: 85px;" %)(((
19.1	604	1
19.3	605	)))\|=(% style="width: 90px;" %)(((
19.1	606	1
19.3	607	)))\|=(% style="width: 88px;" %)(((
19.1	608	1
19.3	609	)))\|=(% style="width: 86px;" %)(((
19.1	610	1
19.3	611	)))\|=(% style="width: 92px;" %)(((
19.1	612	1
19.3	613	)))\|=(% style="width: 92px;" %)(((
19.1	614	1
	615	)))
19.3	616	\|(% style="width:97px" %)(((
19.1	617	Value
19.3	618	)))\|(% style="width:71px" %)(((
19.1	619	address
	620	)))\|(% style="width:70px" %)(((
	621	request
19.3	622	)))\|(% style="width:48px" %)(((
19.1	623	ACK
19.3	624	)))\|(% style="width:85px" %)(((
19.1	625	(((
20.1	626	DOI1&
	627	DOI2 level
19.1	628	)))
19.3	629	)))\|(% style="width:90px" %)(((
19.1	630	DI1TODO1
19.3	631	)))\|(% style="width:88px" %)(((
19.1	632	DI1TORO1
19.3	633	)))\|(% style="width:86px" %)(((
19.1	634	(((
	635	RO2&
	636	RO2 level
	637	)))
19.3	638	)))\|(% style="width:92px" %)(((
19.1	639	DI2TODO2
19.3	640	)))\|(% style="width:92px" %)(((
19.1	641	DI2TORO2
	642	)))
	643
	644	(((
	645	(% style="color:#037691" %)The first byte(%%): 00 is the broadcast address, 01-08 is the RX group number.
	646	)))
	647
	648	(((
	649	(% style="color:#037691" %)The second byte(%%): send mapping request when not 0, not request when it is 0.
	650	)))
	651
	652	(((
	653	(% style="color:#037691" %)The third byte(%%): ACK returned to the sender after the mapping is completed.
	654	)))
	655
	656	(((
	657	(((
21.1	658	(% 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.
19.1	659	)))
	660	)))
	661
	662	(((
	663	(% style="color:#037691" %)The Fifth byte(%%): DI1TODO1 when the interrupt is triggered, 0 when the interrupt is not triggered.
	664	)))
	665
	666	(((
	667	(% style="color:#037691" %)The Sixth byte(%%): 0 does not trigger interrupt when DI1TORO1 interrupt is triggered.
	668	)))
	669
	670	(((
	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 of RO2 when the interrupt is triggered.
	673	)))
	674	)))
	675
	676	(((
	677	(% style="color:#037691" %)The 8th byte(%%): DI2TODO2 when the interrupt is triggered, 0 when the interrupt is not triggered.
	678	)))
	679
	680	(((
	681	(% style="color:#037691" %)The 9th byte(%%): DI2TORO2 when an interrupt is triggered, 0 when an interrupt is not triggered.
	682	)))
	683
	684

Wiki source code of Point to Point Communication of LT-22222-L

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