Last modified by Edwin Chen on 2022/11/22 09:38
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From version < 8.4 >
edited by Xiaoling
on 2022/06/02 13:46
To version < 4.2 >
edited by Xiaoling
on 2022/06/02 11:16
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Summary

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... ... @@ -4,13 +4,9 @@
4 4  
5 5  = **1. Overview** =
6 6  
7 -(((
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 12  [[Point to Point Software for LT-22222-L>>https://github.com/dragino/LT-22222-L]].
13 -)))
14 14  
15 15  == ==
16 16  
... ... @@ -17,184 +17,39 @@
17 17  = **2. Features for this firmware** =
18 18  
19 19  
20 -== **2.1  Point To Point** ==
16 +== **2.1  Overview** ==
21 21  
18 +[[image:image-20220602111219-1.png]]
22 22  
23 -[[image:image-20220602111219-1.png||height="472" width="972"]]
24 24  
21 +== **2.2. Configure** ==
25 25  
26 -(% class="wikigeneratedid" id="H2.2.Configure" %)
27 -(% style="color:blue" %)**Configure:**
23 +A's configuration:AT+GROUPMOD=0            B's configuration:AT+GROUPMOD=0
28 28  
25 +AT+TXCHS=868700000                        AT+TXCHS=869000000
29 29  
30 -(% border="1" style="background-color:#f7faff; color:black; width:500px" %)
31 -|=**A's configuration**|=**B's configuration**
32 -|AT+GROUPMOD=0|AT+GROUPMOD=0
33 -|AT+TXCHS=868700000|AT+TXCHS=869000000
34 -|AT+RXCHS=869000000|AT+RXCHS=868700000
35 -|AT+TRIG1=2,50|AT+TRIG1=2,50
36 -|AT+TRIG2=2,50|AT+TRIG2=2,50
37 -|AT+DI1TODO1=2|AT+DI1TODO1=2
38 -|AT+DI1TORO1=2|AT+DI1TORO1=2
39 -|AT+DI2TODO2=2 |AT+DI2TODO2=2
40 -|AT+DI2TORO2=2|AT+DI2TORO2=2
27 +AT+RXCHS=869000000                        AT+RXCHS=868700000
41 41  
42 -== **2.2  Point To Mult-Point ** ==
29 + AT+TRIG1=2,50                             AT+TRIG1=2,50
43 43  
31 + AT+TRIG2=2,50                           AT+TRIG2=2,50
44 44  
45 -[[image:image-20220602111219-2.png]]
33 + AT+DI1TODO1=2                            AT+DI1TODO1=2
46 46  
35 +AT+DI1TORO1=2                            AT+DI1TORO1=2
47 47  
48 -[[image:image-20220602111219-3.png]]
37 + AT+DI2TODO2=2 AT+DI2TODO2=2
49 49  
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.
39 +AT+DI2TORO2=2                          AT+DI2TORO2=2
51 51  
52 52  
53 -== **2.3 AT command** ==
42 +== **2.3.  Serial port display** ==
54 54  
44 +[[image:image-20220602111219-2.png]]
55 55  
56 -ATZ :  Trig a reset of the MCU
57 57  
58 -AT+FDR : Reset Parameters to Factory Default, Keys Reserve
47 +[[image:image-20220602111219-3.png]]
59 59  
60 -AT+FCU : Get or Set the Frame Counter Uplink
49 +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 61  
62 -AT+FCD : Get or Set the Frame Counter Downlink
63 -
64 -AT+TXP : Get or Set the transmit power, the maximum is 20dBm (default is 14dBm)
65 -
66 -AT+SYNC : Get or Set the Sync word [1:0x34,0:0x12] (default is 1)
67 -
68 -AT+PMB : Get or Set the preamble (default:8)
69 -
70 -AT+TXCHS : Get or Set the transmit frequency of TX (default:868700000)
71 -
72 -AT+TXSF : Get or Set the spreading factor of TX (7 to 12) (default:12)
73 -
74 -AT+RXCHS : Get or Set the transmit frequency of RX (default:869000000)
75 -
76 -AT+RXSF : Get or Set the spreading factor of RX (7 to 12) (default:12)
77 -
78 -AT+BW : Get or Set the bandwidth [0:125khz,1:250khz,2:500khz] (default:0)
79 -
80 -AT+CR : Get or Set the coding rate [1: 4/5, 2: 4/6, 3: 4/7, 4: 4/8] (default:1)
81 -
82 -AT+TDC : Get or set the application data transmission interval in ms(default 10 minutes)
83 -
84 -AT+VER : Get firmware version number
85 -
86 -AT+SEND : Set Custom sent hex data
87 -
88 -AT+GROUPMOD : Set or Get the grouping mode of the device (default: 0)
89 -
90 -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)
91 -
92 -AT+TRIG1 : Set or Get the DI1 pin interrupt trigger mode (default 0,0)
93 -
94 -AT+TRIG2 : Set or Get the DI2 pin interrupt trigger mode (default 0,0)
95 -
96 -AT+DI1TODO1 : Set or get the mode in which DI1 maps to DO1 (default 0)
97 -
98 -AT+DI1TORO1 : Set or get the mode in which DI1 maps to RO1(default 0)
99 -
100 -AT+DI2TODO2 : Set or get the mode in which DI2 maps to DO2(default 0)
101 -
102 -AT+DI2TORO2 : Set or get the mode in which DI2 maps to RO2(default 0)
103 -
104 -
105 -
106 -**Example1:** AT+SEND=01020304 will send a payload of 01020304
107 -
108 -
109 -i.g. AT+TRIGx=a  Trigger directly without triggering time
110 -
111 -AT+TRIGx=a,b  a=0, falling edge;
112 -
113 -a=1, rising edge;
114 -
115 - a=2, falling edge or rising edge.
116 -
117 - b, triggering time in milliseconds
118 -
119 - AT+TRIGx=2,50  Falling edge or rising edge trigger, and the trigger time exceeds 50ms
120 -
121 -
122 -i.g. AT+DI1TODO1= maps value
123 -
124 - AT+DI1TORO1= maps value
125 -
126 -AT+DI2TODO2= maps value
127 -
128 -AT+DI2TORO2= maps value
129 -
130 -
131 -
132 -
133 -(% border="1" style="background-color:#f7faff; color:black; width:706px" %)
134 -|=(% style="width: 102px;" %)Maps value|=(% style="width: 331px;" %)DIx to DOx|=(% style="width: 268px;" %)DIx to ROx
135 -|(% style="width:102px" %)0|(% style="width:331px" %)No Action|(% style="width:268px" %)No Action
136 -|(% 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" %)(((
137 -If DIx is high, control ROx to close,
138 -
139 -if DIx is low, control ROx to open
140 -)))
141 -|(% 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" %)(((
142 -If DIx is high, control ROx to open,
143 -
144 -if DIx is low, control ROx to close
145 -)))
146 -|(% style="width:102px" %)3|(% style="width:331px" %)DOx state flip|(% style="width:268px" %)ROx state flip
147 -
148 -i.g. AT+GROUPMOD=0  Set to point to point mode
149 -
150 -AT+GROUPMOD=0,aa  Set the TX group that controls the number of aa (The maximum value of aa is 8)
151 -
152 -AT+GROUPMOD=1,bb   Set to the RX group controlled by the TX group, numbered bb(The maximum value of aa is 8)
153 -
154 -
155 -AT+GROUPMOD=0,2  Set to control the TX group of the two RX groups
156 -
157 -AT+GROUPMOD=1,1  Set the RX group numbered 1
158 -
159 -AT+GROUPMOD=1,2  Set the RX group numbered 2
160 -
161 -
162 -
163 -== **2.4 Data Format** ==
164 -
165 -8 bytes of GROUPID + 9 bytes of payload + 4 bytes of checksum
166 -
167 -
168 -Payload:
169 -
170 -(% border="1" style="background-color:#f7faff; color:black; width:938px" %)
171 -|=(% 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
172 -|(% style="width:123px" %)**Value**|(% style="width:38px" %)address|(% style="width:70px" %)request|(% style="width:52px" %)ACK|(% style="width:127px" %)(((
173 -DI1&
174 -
175 -DI1 level
176 -)))|(% style="width:101px" %)DI1TODO1|(% style="width:91px" %)DI1TORO1|(% style="width:111px" %)(((
177 -DI2&
178 -
179 -DI2 level
180 -)))|(% style="width:105px" %)DI2TODO2|(% style="width:106px" %)DI2TORO2
181 -
182 -**The first byte**: 00 is the broadcast address, 01-08 is the RX group number
183 -
184 -**The second byte**: send mapping request when not 0, not request when it is 0
185 -
186 -**The third byte**: ACK returned to the sender after the mapping is completed
187 -
188 -**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
189 -
190 -**The Fifth byte**: DI1TODO1 when the interrupt is triggered, 0 when the interrupt is not triggered
191 -
192 -**The Sixth byte**: 0 does not trigger interrupt when DI1TORO1 interrupt is triggered
193 -
194 -**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
195 -
196 -**The 8th byte**: DI2TODO2 when the interrupt is triggered, 0 when the interrupt is not triggered
197 -
198 -**The 9th byte**: DI2TORO2 when an interrupt is triggered, 0 when an interrupt is not triggered
199 -
200 200  

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