Last modified by Edwin Chen on 2022/11/22 09:38
<
From version < 8.7 >
edited by Xiaoling
on 2022/06/02 14:19
To version < 4.3 >
edited by Xiaoling
on 2022/06/02 11:34
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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  
... ... @@ -17,16 +17,13 @@
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:**
28 -
29 -
30 30  (% border="1" style="background-color:#f7faff; color:black; width:500px" %)
31 31  |=**A's configuration**|=**B's configuration**
32 32  |AT+GROUPMOD=0|AT+GROUPMOD=0
... ... @@ -39,170 +39,52 @@
39 39  |AT+DI2TODO2=2 |AT+DI2TODO2=2
40 40  |AT+DI2TORO2=2|AT+DI2TORO2=2
41 41  
42 -== **2.2  Point To Mult-Point ** ==
35 +(% style="color:#037691" %)**A's configuration:  ** **B's configuration:**
43 43  
37 +(((
38 +AT+GROUPMOD=0  AT+GROUPMOD=0
39 +)))
44 44  
45 -[[image:image-20220602111219-2.png]]
41 +(((
42 +AT+TXCHS=868700000  AT+TXCHS=869000000
43 +)))
46 46  
45 +(((
46 +AT+RXCHS=869000000  AT+RXCHS=868700000
47 +)))
47 47  
48 -[[image:image-20220602111219-3.png]]
49 +(((
50 +AT+TRIG1=2,50  AT+TRIG1=2,50
51 +)))
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.
53 +(((
54 +AT+TRIG2=2,50  AT+TRIG2=2,50
55 +)))
51 51  
57 +(((
58 +AT+DI1TODO1=2  AT+DI1TODO1=2
59 +)))
52 52  
53 -== **2.3 AT command** ==
61 +(((
62 +AT+DI1TORO1=2  AT+DI1TORO1=2
63 +)))
54 54  
55 -
56 -(% style="color:#037691" %)**ATZ** (%%)**: ** Trig a reset of the MCU
57 -
58 -(% style="color:#037691" %)**AT+FDR** (%%)**:**  Reset Parameters to Factory Default, Keys Reserve
59 -
60 -(% style="color:#037691" %)**AT+FCU** (%%)**:**  Get or Set the Frame Counter Uplink
61 -
62 -(% style="color:#037691" %)**AT+FCD** (%%)**:**  Get or Set the Frame Counter Downlink
63 -
64 -(% style="color:#037691" %)**AT+TXP** (%%)**:**  Get or Set the transmit power, the maximum is 20dBm (default is 14dBm)
65 -
66 -(% style="color:#037691" %)**AT+SYNC** (%%)**:**  Get or Set the Sync word [1:0x34,0:0x12] (default is 1)
67 -
68 -(% style="color:#037691" %)**AT+PMB** (%%)**:    **Get or Set the preamble (default:8)
69 -
70 -(% style="color:#037691" %)**AT+TXCHS **(%%)**:** Get or Set the transmit frequency of TX (default:868700000)
71 -
72 -(% style="color:#037691" %)**AT+TXSF **(%%)**:**  Get or Set the spreading factor of TX (7 to 12) (default:12)
73 -
74 -(% style="color:#037691" %)**AT+RXCHS **(%%)**:** Get or Set the transmit frequency of RX (default:869000000)
75 -
76 -(% style="color:#037691" %)**AT+RXSF **(%%)**:**  Get or Set the spreading factor of RX (7 to 12) (default:12)
77 -
78 -(% style="color:#037691" %)**AT+BW **(%%)**:       **Get or Set the bandwidth [0:125khz,1:250khz,2:500khz] (default:0)
79 -
80 -(% 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)
81 -
82 -(% style="color:#037691" %)**AT+TDC **(%%)**:**  Get or set the application data transmission interval in ms(default 10 minutes)
83 -
84 -(% style="color:#037691" %)**AT+VER **(%%)**:**  Get firmware version number
85 -
86 -(% style="color:#037691" %)**AT+SEND **(%%)**:    **Set Custom sent hex data
87 -
88 -(% style="color:#037691" %)**AT+GROUPMOD **(%%)**: **Set or Get the grouping mode of the device (default: 0)
89 -
90 -(% 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)
91 -
92 -(% style="color:#037691" %)**AT+TRIG1 **(%%)**:**  Set or Get the DI1 pin interrupt trigger mode (default 0,0)
93 -
94 -(% style="color:#037691" %)**AT+TRIG2 **(%%)**:            **Set or Get the DI2 pin interrupt trigger mode (default 0,0)
95 -
96 -(% style="color:#037691" %)**AT+DI1TODO1 **(%%)**:    **Set or get the mode in which DI1 maps to DO1 (default 0)
97 -
98 -(% style="color:#037691" %)**AT+DI1TORO1 **(%%)**:    **Set or get the mode in which DI1 maps to RO1(default 0)
99 -
100 -(% style="color:#037691" %)**AT+DI2TODO2 **(%%)**:**  Set or get the mode in which DI2 maps to DO2(default 0)
101 -
102 -(% style="color:#037691" %)**AT+DI2TORO2 **(%%)**:    **Set or get the mode in which DI2 maps to RO2(default 0)
103 -
104 -
105 -
106 -(% style="color:#4f81bd" %)**Example 1:**
107 -
108 -**AT+SEND=01020304 **will send a payload of 01020304
109 -
110 -
111 -(% style="color:#4f81bd" %)**Example 2: **
112 -
113 -**AT+TRIGx=a  **Trigger directly without triggering time
114 -
115 -**AT+TRIGx=a,b**
116 -
117 -a=0: falling edge;
118 -
119 -a=1: rising edge;
120 -
121 -a=2: falling edge or rising edge;
122 -
123 -b:  triggering time in milliseconds.
124 -
125 -AT+TRIGx=2,50  Falling edge or rising edge trigger, and the trigger time exceeds 50ms.
126 -
127 -
128 -(% style="color:#4f81bd" %)**Example 3: **
129 -
130 -**AT+DI1TODO1= maps value**
131 -
132 -**AT+DI1TORO1= maps value**
133 -
134 -**AT+DI2TODO2= maps value**
135 -
136 -**AT+DI2TORO2= maps value**
137 -
138 -
139 -(% border="1" style="background-color:#f7faff; color:black; width:706px" %)
140 -|=(% style="width: 102px;" %)Maps value|=(% style="width: 331px;" %)DIx to DOx|=(% style="width: 268px;" %)DIx to ROx
141 -|(% style="width:102px" %)0|(% style="width:331px" %)No Action|(% style="width:268px" %)No Action
142 -|(% 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" %)(((
143 -If DIx is high, control ROx to close,
144 -
145 -if DIx is low, control ROx to open
65 +(((
66 +AT+DI2TODO2=2  AT+DI2TODO2=2
146 146  )))
147 -|(% 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" %)(((
148 -If DIx is high, control ROx to open,
149 149  
150 -if DIx is low, control ROx to close
69 +(((
70 +AT+DI2TORO2=2  AT+DI2TORO2=2
151 151  )))
152 -|(% style="width:102px" %)3|(% style="width:331px" %)DOx state flip|(% style="width:268px" %)ROx state flip
153 153  
154 154  
155 -(% style="color:#4f81bd" %)**Example 4: **
74 +== **2.3.  Serial port display** ==
156 156  
157 -**AT+GROUPMOD=0**  Set to point to point mode
76 +[[image:image-20220602111219-2.png]]
158 158  
159 -**AT+GROUPMOD=0,aa**  Set the TX group that controls the number of aa (The maximum value of aa is 8)
160 160  
161 -**AT+GROUPMOD=1,bb**  Set to the RX group controlled by the TX group, numbered bb(The maximum value of aa is 8)
79 +[[image:image-20220602111219-3.png]]
162 162  
163 -**AT+GROUPMOD=0,2**  Set to control the TX group of the two RX groups
81 +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.
164 164  
165 -**AT+GROUPMOD=1,1**  Set the RX group numbered 1
166 -
167 -**AT+GROUPMOD=1,2**  Set the RX group numbered 2
168 -
169 -
170 -
171 -== **2.4 Data Format** ==
172 -
173 -8 bytes of GROUPID + 9 bytes of payload + 4 bytes of checksum
174 -
175 -
176 -**Payload:**
177 -
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" %)(((
181 -DI1&
182 -
183 -DI1 level
184 -)))|(% style="width:101px" %)DI1TODO1|(% style="width:91px" %)DI1TORO1|(% style="width:111px" %)(((
185 -DI2&
186 -
187 -DI2 level
188 -)))|(% style="width:105px" %)DI2TODO2|(% style="width:106px" %)DI2TORO2
189 -
190 -(% style="color:#037691" %)**The first byte**(%%)**:**  00 is the broadcast address, 01-08 is the RX group number.
191 -
192 -(% style="color:#037691" %)**The second byte**(%%)**:**  send mapping request when not 0, not request when it is 0.
193 -
194 -(% style="color:#037691" %)**The third byte**(%%)**:**  ACK returned to the sender after the mapping is completed.
195 -
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.
197 -
198 -(% style="color:#037691" %)**The Fifth byte**(%%)**:       **DI1TODO1 when the interrupt is triggered, 0 when the interrupt is not triggered.
199 -
200 -(% style="color:#037691" %)**The Sixth byte**(%%)**:**  0 does not trigger interrupt when DI1TORO1 interrupt is triggered.
201 -
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.
203 -
204 -(% style="color:#037691" %)**The 8th byte**(%%)**:          **DI2TODO2 when the interrupt is triggered, 0 when the interrupt is not triggered.
205 -
206 -(% style="color:#037691" %)**The 9th byte**(%%)**:**  DI2TORO2 when an interrupt is triggered, 0 when an interrupt is not triggered.
207 -
208 208  

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