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	1	+= **1.  point to point** =
	2	+
	3	+== **1.1  Overview** ==
	4	+
	5	+(((
	6	+[[image:1656900913288-882.png]]
	7	+
	8	+
	9	+== **1.2  Configure** ==
	10	+
	11	+
	12	+
	13	+(% style="color:blue" %)**Configuration of the TX group:**
	14	+
	15	+AT+GROUPMOD=0,2
	16	+
	17	+AT+GROUPID=12345678
	18	+
	19	+AT+TXCHS=868700000
	20	+
	21	+AT+RXCHS=869000000
	22	+
	23	+AT+CFGDEV=01 03 00 00 00 02,1
	24	+
	25	+or
	26	+
	27	+AT+COMMAND=01 03 00 00 00 02,1
	28	+
	29	+
	30	+(% style="color:blue" %)**Configuration for RX group number 1:**
	31	+
	32	+AT+GROUPMOD=1,1
	33	+
	34	+AT+GROUPID=12345678
	35	+
	36	+AT+TXCHS=869000000
	37	+
	38	+AT+RXCHS=868700000
	39	+
	40	+
	41	+(% style="color:blue" %)**Configuration for RX group number 2:**
	42	+
	43	+AT+GROUPMOD=1,2
	44	+
	45	+AT+GROUPID=12345678
	46	+
	47	+AT+TXCHS=869000000
	48	+
	49	+AT+RXCHS=868700000
	50	+)))
	51	+
	52	+
	53	+= **2. Features for this firmware** =
	54	+
	55	+== **2.1  Point To Point** ==
	56	+
	57	+=== **2.1.1 Overview** ===
	58	+
	59	+
	60	+[[image:image-20220602111219-1.png||height="472" width="972"]]
	61	+
	62	+
	63	+=== **2.2.2 Configure** ===
	64	+
	65	+
	66	+(% border="1" style="background-color:#f7faff; color:black; width:500px" %)
	67	+|=**A's configuration**|=**B's configuration**
	68	+|AT+GROUPMOD=0|AT+GROUPMOD=0
	69	+|AT+TXCHS=868700000|AT+TXCHS=869000000
	70	+|AT+RXCHS=869000000|AT+RXCHS=868700000
	71	+|AT+TRIG1=2,50|AT+TRIG1=2,50
	72	+|AT+TRIG2=2,50|AT+TRIG2=2,50
	73	+|AT+DI1TODO1=2|AT+DI1TODO1=2
	74	+|AT+DI1TORO1=2|AT+DI1TORO1=2
	75	+|AT+DI2TODO2=2 |AT+DI2TODO2=2
	76	+|AT+DI2TORO2=2|AT+DI2TORO2=2
	77	+
	78	+=== **2.2.3 Serial port display** ===
	79	+
	80	+
	81	+(% class="wikigeneratedid" %)
	82	+[[image:image-20220602111219-2.png]]
	83	+
	84	+
	85	+(% class="wikigeneratedid" %)
	86	+[[image:image-20220602111219-3.png]]
	87	+
	88	+(% class="wikigeneratedid" %)
	89	+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.
	90	+
	91	+
	92	+== **2.2  Point To Mult-Point ** ==
	93	+
	94	+=== **2.2.1 Overview** ===
	95	+
	96	+
	97	+[[image:1654152390874-192.png]]
	98	+
	99	+
	100	+=== **2.2.2  Configure** ===
	101	+
	102	+
	103	+(% style="color:#4f81bd" %)**Configuration of the TX group:**
	104	+
	105	+AT+GROUPMOD=0,2
	106	+
	107	+AT+TXCHS=868700000
	108	+
	109	+AT+RXCHS=869000000
	110	+
	111	+AT+TRIG1=2,50
	112	+
	113	+AT+TRIG2=2,50
	114	+
	115	+AT+DI1TODO1=1
	116	+
	117	+AT+DI1TORO1=1
	118	+
	119	+AT+DI2TODO2=1
	120	+
	121	+AT+DI2TORO2=1
	122	+
	123	+
	124	+(% style="color:#4f81bd" %)**Configuration for RX group number 1:**
	125	+
	126	+AT+GROUPMOD=1,1
	127	+
	128	+AT+TXCHS=869000000
	129	+
	130	+AT+RXCHS=868700000
	131	+
	132	+
	133	+(% style="color:#4f81bd" %)**Configuration for RX group number 2:**
	134	+
	135	+AT+GROUPMOD=1,2
	136	+
	137	+AT+TXCHS=869000000
	138	+
	139	+AT+RXCHS=868700000
	140	+
	141	+
	142	+=== **2.2.3 Serial port display** ===
	143	+
	144	+
	145	+[[image:image-20220602144747-1.png]]
	146	+
	147	+
	148	+[[image:image-20220602144747-2.png]]
	149	+
	150	+(((
	151	+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.
	152	+)))
	153	+
	154	+
	155	+== **2.3 AT command** ==
	156	+
	157	+
	158	+(((
	159	+(% style="color:#037691" %)**ATZ** (%%)**: ** Trig a reset of the MCU
	160	+)))
	161	+
	162	+(((
	163	+(% style="color:#037691" %)**AT+FDR** (%%)**:**  Reset Parameters to Factory Default, Keys Reserve
	164	+)))
	165	+
	166	+(((
	167	+(% style="color:#037691" %)**AT+FCU** (%%)**:**  Get or Set the Frame Counter Uplink
	168	+)))
	169	+
	170	+(((
	171	+(% style="color:#037691" %)**AT+FCD** (%%)**:**  Get or Set the Frame Counter Downlink
	172	+)))
	173	+
	174	+(((
	175	+(% style="color:#037691" %)**AT+TXP** (%%)**:**  Get or Set the transmit power, the maximum is 20dBm (default is 14dBm)
	176	+)))
	177	+
	178	+(((
	179	+(% style="color:#037691" %)**AT+SYNC** (%%)**:**  Get or Set the Sync word [1:0x34,0:0x12] (default is 1)
	180	+)))
	181	+
	182	+(((
	183	+(% style="color:#037691" %)**AT+PMB** (%%)**:    **Get or Set the preamble (default:8)
	184	+)))
	185	+
	186	+(((
	187	+(% style="color:#037691" %)**AT+TXCHS **(%%)**:** Get or Set the transmit frequency of TX (default:868700000)
	188	+)))
	189	+
	190	+(((
	191	+(% style="color:#037691" %)**AT+TXSF **(%%)**:**  Get or Set the spreading factor of TX (7 to 12) (default:12)
	192	+)))
	193	+
	194	+(((
	195	+(% style="color:#037691" %)**AT+RXCHS **(%%)**:** Get or Set the transmit frequency of RX (default:869000000)
	196	+)))
	197	+
	198	+(((
	199	+(% style="color:#037691" %)**AT+RXSF **(%%)**:**  Get or Set the spreading factor of RX (7 to 12) (default:12)
	200	+)))
	201	+
	202	+(((
	203	+(% style="color:#037691" %)**AT+BW **(%%)**:       **Get or Set the bandwidth [0:125khz,1:250khz,2:500khz] (default:0)
	204	+)))
	205	+
	206	+(((
	207	+(% 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)
	208	+)))
	209	+
	210	+(((
	211	+(% style="color:#037691" %)**AT+TDC **(%%)**:**  Get or set the application data transmission interval in ms(default 10 minutes)
	212	+)))
	213	+
	214	+(((
	215	+(% style="color:#037691" %)**AT+VER **(%%)**:**  Get firmware version number
	216	+)))
	217	+
	218	+(((
	219	+(% style="color:#037691" %)**AT+SEND **(%%)**:   **Set Custom sent hex data
	220	+)))
	221	+
	222	+(((
	223	+(% style="color:#037691" %)**AT+GROUPMOD **(%%)**: **Set or Get the grouping mode of the device (default: 0)
	224	+)))
	225	+
	226	+(((
	227	+(((
	228	+(% 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)
	229	+)))
	230	+)))
	231	+
	232	+(((
	233	+(% style="color:#037691" %)**AT+TRIG1 **(%%)**:**  Set or Get the DI1 pin interrupt trigger mode (default 0,0)
	234	+)))
	235	+
	236	+(((
	237	+(% style="color:#037691" %)**AT+TRIG2 **(%%)**:            **Set or Get the DI2 pin interrupt trigger mode (default 0,0)
	238	+)))
	239	+
	240	+(((
	241	+(% style="color:#037691" %)**AT+DI1TODO1 **(%%)**:    **Set or get the mode in which DI1 maps to DO1 (default 0)
	242	+)))
	243	+
	244	+(((
	245	+(% style="color:#037691" %)**AT+DI1TORO1 **(%%)**:    **Set or get the mode in which DI1 maps to RO1(default 0)
	246	+)))
	247	+
	248	+(((
	249	+(% style="color:#037691" %)**AT+DI2TODO2 **(%%)**:**  Set or get the mode in which DI2 maps to DO2(default 0)
	250	+)))
	251	+
	252	+(((
	253	+(% style="color:#037691" %)**AT+DI2TORO2 **(%%)**:    **Set or get the mode in which DI2 maps to RO2(default 0)
	254	+)))
	255	+
	256	+(((
	257	+
	258	+)))
	259	+
	260	+(((
	261	+
	262	+)))
	263	+
	264	+(((
	265	+(% style="color:#4f81bd" %)**Example 1:**
	266	+)))
	267	+
	268	+(((
	269	+**AT+SEND=01020304 **will send a payload of 01020304
	270	+)))
	271	+
	272	+(((
	273	+
	274	+)))
	275	+
	276	+(((
	277	+(% style="color:#4f81bd" %)**Example 2: **
	278	+)))
	279	+
	280	+(((
	281	+**AT+TRIGx=a    **Trigger directly without triggering time
	282	+)))
	283	+
	284	+(((
	285	+**AT+TRIGx=a,b**
	286	+)))
	287	+
	288	+(((
	289	+a=0: falling edge;
	290	+)))
	291	+
	292	+(((
	293	+a=1: rising edge;
	294	+)))
	295	+
	296	+(((
	297	+a=2: falling edge or rising edge;
	298	+)))
	299	+
	300	+(((
	301	+b:  triggering time in milliseconds.
	302	+)))
	303	+
	304	+(((
	305	+AT+TRIGx=2,50  Falling edge or rising edge trigger, and the trigger time exceeds 50ms.
	306	+)))
	307	+
	308	+(((
	309	+
	310	+)))
	311	+
	312	+(((
	313	+(% style="color:#4f81bd" %)**Example 3: **
	314	+)))
	315	+
	316	+(((
	317	+**AT+DI1TODO1= maps value**
	318	+)))
	319	+
	320	+(((
	321	+**AT+DI1TORO1= maps value**
	322	+)))
	323	+
	324	+(((
	325	+**AT+DI2TODO2= maps value**
	326	+)))
	327	+
	328	+(((
	329	+**AT+DI2TORO2= maps value**
	330	+)))
	331	+
	332	+(((
	333	+
	334	+)))
	335	+
	336	+(% border="1" style="background-color:#f7faff; color:black; width:706px" %)
	337	+|=(% style="width: 102px;" %)(((
	338	+Maps value
	339	+)))|=(% style="width: 331px;" %)(((
	340	+DIx to DOx
	341	+)))|=(% style="width: 268px;" %)(((
	342	+DIx to ROx
	343	+)))
	344	+|(% style="width:102px" %)(((
	345	+0
	346	+)))|(% style="width:331px" %)(((
	347	+No Action
	348	+)))|(% style="width:268px" %)(((
	349	+No Action
	350	+)))
	351	+|(% style="width:102px" %)(((
	352	+1
	353	+)))|(% style="width:331px" %)(((
	354	+If DIx is high, control DOx to output low level, If DIx is low, control DOx to output high level
	355	+)))|(% style="width:268px" %)(((
	356	+(((
	357	+If DIx is high, control ROx to close,
	358	+)))
	359	+
	360	+(((
	361	+if DIx is low, control ROx to open
	362	+)))
	363	+)))
	364	+|(% style="width:102px" %)(((
	365	+2
	366	+)))|(% style="width:331px" %)(((
	367	+If DIx is high, control DOx to output high level, If DIx is low, control DOx to output low level
	368	+)))|(% style="width:268px" %)(((
	369	+(((
	370	+If DIx is high, control ROx to open,
	371	+)))
	372	+
	373	+(((
	374	+if DIx is low, control ROx to close
	375	+)))
	376	+)))
	377	+|(% style="width:102px" %)(((
	378	+3
	379	+)))|(% style="width:331px" %)(((
	380	+DOx state flip
	381	+)))|(% style="width:268px" %)(((
	382	+ROx state flip
	383	+)))
	384	+
	385	+(((
	386	+(% style="color:#4f81bd" %)**Example 4: **
	387	+)))
	388	+
	389	+(((
	390	+**AT+GROUPMOD=0**  Set to point to point mode
	391	+)))
	392	+
	393	+(((
	394	+**AT+GROUPMOD=0,aa**  Set the TX group that controls the number of aa (The maximum value of aa is 8)
	395	+)))
	396	+
	397	+(((
	398	+(((
	399	+**AT+GROUPMOD=1,bb**  Set to the RX group controlled by the TX group, numbered bb(The maximum value of aa is 8)
	400	+)))
	401	+)))
	402	+
	403	+(((
	404	+**AT+GROUPMOD=0,2**  Set to control the TX group of the two RX groups
	405	+)))
	406	+
	407	+(((
	408	+**AT+GROUPMOD=1,1**  Set the RX group numbered 1
	409	+)))
	410	+
	411	+(((
	412	+**AT+GROUPMOD=1,2**  Set the RX group numbered 2
	413	+)))
	414	+
	415	+
	416	+== **2.4 Data Format** ==
	417	+
	418	+(((
	419	+8 bytes of GROUPID + 9 bytes of payload + 4 bytes of checksum
	420	+)))
	421	+
	422	+(((
	423	+
	424	+)))
	425	+
	426	+(((
	427	+(% style="color:#4f81bd" %)**Payload:**
	428	+)))
	429	+
	430	+(% border="1" style="background-color:#f7faff; color:black; width:938px" %)
	431	+|=(% style="width: 123px;" %)(((
	432	+**Size (bytes)**
	433	+)))|=(% style="width: 107px;" %)(((
	434	+1
	435	+)))|=(% style="width: 107px;" %)(((
	436	+1
	437	+)))|=(% style="width: 107px;" %)(((
	438	+1
	439	+)))|=(% style="width: 107px;" %)(((
	440	+1
	441	+)))|=(% style="width: 107px;" %)(((
	442	+1
	443	+)))|=(% style="width: 107px;" %)(((
	444	+1
	445	+)))|=(% style="width: 107px;" %)(((
	446	+1
	447	+)))|=(% style="width: 107px;" %)(((
	448	+1
	449	+)))|=(% style="width: 107px;" %)(((
	450	+1
	451	+)))
	452	+|(% style="width:123px" %)(((
	453	+**Value**
	454	+)))|(% style="width:38px" %)(((
	455	+address
	456	+)))|(% style="width:70px" %)(((
	457	+request
	458	+)))|(% style="width:52px" %)(((
	459	+ACK
	460	+)))|(% style="width:127px" %)(((
	461	+(((
	462	+DI1&
	463	+)))
	464	+
	465	+(((
	466	+DI1 level
	467	+)))
	468	+)))|(% style="width:101px" %)(((
	469	+DI1TODO1
	470	+)))|(% style="width:91px" %)(((
	471	+DI1TORO1
	472	+)))|(% style="width:111px" %)(((
	473	+(((
	474	+DI2&
	475	+)))
	476	+
	477	+(((
	478	+DI2 level
	479	+)))
	480	+)))|(% style="width:105px" %)(((
	481	+DI2TODO2
	482	+)))|(% style="width:106px" %)(((
	483	+DI2TORO2
	484	+)))
	485	+
	486	+(((
	487	+(% style="color:#037691" %)**The first byte**(%%)**:**  00 is the broadcast address, 01-08 is the RX group number.
	488	+)))
	489	+
	490	+(((
	491	+(% style="color:#037691" %)**The second byte**(%%)**:**  send mapping request when not 0, not request when it is 0.
	492	+)))
	493	+
	494	+(((
	495	+(% style="color:#037691" %)**The third byte**(%%)**:**  ACK returned to the sender after the mapping is completed.
	496	+)))
	497	+
	498	+(((
	499	+(((
	500	+(% 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.
	501	+)))
	502	+)))
	503	+
	504	+(((
	505	+(% style="color:#037691" %)**The Fifth byte**(%%)**:       **DI1TODO1 when the interrupt is triggered, 0 when the interrupt is not triggered.
	506	+)))
	507	+
	508	+(((
	509	+(% style="color:#037691" %)**The Sixth byte**(%%)**:**  0 does not trigger interrupt when DI1TORO1 interrupt is triggered.
	510	+)))
	511	+
	512	+(((
	513	+(((
	514	+(% 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.
	515	+)))
	516	+)))
	517	+
	518	+(((
	519	+(% style="color:#037691" %)**The 8th byte**(%%)**:          **DI2TODO2 when the interrupt is triggered, 0 when the interrupt is not triggered.
	520	+)))
	521	+
	522	+(((
	523	+(% style="color:#037691" %)**The 9th byte**(%%)**:**  DI2TORO2 when an interrupt is triggered, 0 when an interrupt is not triggered.
	524	+)))