Last modified by Edwin Chen on 2022/11/22 09:38
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From version < 15.3 >
edited by Xiaoling
on 2022/06/02 14:52
To version < 4.3 >
edited by Xiaoling
on 2022/06/02 11:34
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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  
22 -=== **2.1.1 Overview** ===
18 +[[image:image-20220602111219-1.png]]
23 23  
24 -[[image:image-20220602111219-1.png||height="472" width="972"]]
25 25  
21 +== **2.2. Configure** ==
26 26  
27 -=== **2.2.2 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
... ... @@ -39,456 +39,52 @@
39 39  |AT+DI2TODO2=2 |AT+DI2TODO2=2
40 40  |AT+DI2TORO2=2|AT+DI2TORO2=2
41 41  
35 +(% style="color:#037691" %)**A's configuration:  ** **B's configuration:**
42 42  
43 -
44 -=== **2.2.3 Serial port display** ===
45 -
46 -
47 -(% class="wikigeneratedid" %)
48 -[[image:image-20220602111219-2.png]]
49 -
50 -
51 -(% class="wikigeneratedid" %)
52 -[[image:image-20220602111219-3.png]]
53 -
54 -(% class="wikigeneratedid" %)
55 -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.
56 -
57 -
58 -== **2.2  Point To Mult-Point ** ==
59 -
60 -=== **2.2.1 Overview** ===
61 -
62 -
63 -[[image:1654152390874-192.png]]
64 -
65 -
66 -=== **2.2.2  Configure** ===
67 -
68 -
69 -(% style="color:#4f81bd" %)**Configuration of the TX group:**
70 -
71 -AT+GROUPMOD=0,2
72 -
73 -AT+TXCHS=868700000
74 -
75 -AT+RXCHS=869000000
76 -
77 -AT+TRIG1=2,50
78 -
79 -AT+TRIG2=2,50
80 -
81 -AT+DI1TODO1=1
82 -
83 -AT+DI1TORO1=1
84 -
85 -AT+DI2TODO2=1
86 -
87 -AT+DI2TORO2=1
88 -
89 -
90 -(% style="color:#4f81bd" %)**Configuration for RX group number 1:**
91 -
92 -AT+GROUPMOD=1,1
93 -
94 -AT+TXCHS=869000000
95 -
96 -AT+RXCHS=868700000
97 -
98 -
99 -(% style="color:#4f81bd" %)**Configuration for RX group number 2:**
100 -
101 -AT+GROUPMOD=1,2
102 -
103 -AT+TXCHS=869000000
104 -
105 -AT+RXCHS=868700000
106 -
107 -
108 -=== **2.2.3 Serial port display** ===
109 -
110 -
111 -[[image:image-20220602144747-1.png]]
112 -
113 -
114 -[[image:image-20220602144747-2.png]]
115 -
116 116  (((
117 -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.
38 +AT+GROUPMOD=0  AT+GROUPMOD=0
118 118  )))
119 119  
120 -
121 -
122 -
123 -== **2.3 AT command** ==
124 -
125 -
126 126  (((
127 -(% style="color:#037691" %)**ATZ** (%%)**: ** Trig a reset of the MCU
42 +AT+TXCHS=868700000  AT+TXCHS=869000000
128 128  )))
129 129  
130 130  (((
131 -(% style="color:#037691" %)**AT+FDR** (%%)**:**  Reset Parameters to Factory Default, Keys Reserve
46 +AT+RXCHS=869000000  AT+RXCHS=868700000
132 132  )))
133 133  
134 134  (((
135 -(% style="color:#037691" %)**AT+FCU** (%%)**:**  Get or Set the Frame Counter Uplink
50 +AT+TRIG1=2,50  AT+TRIG1=2,50
136 136  )))
137 137  
138 138  (((
139 -(% style="color:#037691" %)**AT+FCD** (%%)**:**  Get or Set the Frame Counter Downlink
54 +AT+TRIG2=2,50  AT+TRIG2=2,50
140 140  )))
141 141  
142 142  (((
143 -(% style="color:#037691" %)**AT+TXP** (%%)**:**  Get or Set the transmit power, the maximum is 20dBm (default is 14dBm)
58 +AT+DI1TODO1=2  AT+DI1TODO1=2
144 144  )))
145 145  
146 146  (((
147 -(% style="color:#037691" %)**AT+SYNC** (%%)**:**  Get or Set the Sync word [1:0x34,0:0x12] (default is 1)
62 +AT+DI1TORO1=2  AT+DI1TORO1=2
148 148  )))
149 149  
150 150  (((
151 -(% style="color:#037691" %)**AT+PMB** (%%)**:    **Get or Set the preamble (default:8)
66 +AT+DI2TODO2=2  AT+DI2TODO2=2
152 152  )))
153 153  
154 154  (((
155 -(% style="color:#037691" %)**AT+TXCHS **(%%)**:** Get or Set the transmit frequency of TX (default:868700000)
70 +AT+DI2TORO2=2  AT+DI2TORO2=2
156 156  )))
157 157  
158 -(((
159 -(% style="color:#037691" %)**AT+TXSF **(%%)**:**  Get or Set the spreading factor of TX (7 to 12) (default:12)
160 -)))
161 161  
162 -(((
163 -(% style="color:#037691" %)**AT+RXCHS **(%%)**:** Get or Set the transmit frequency of RX (default:869000000)
164 -)))
74 +== **2.3.  Serial port display** ==
165 165  
166 -(((
167 -(% style="color:#037691" %)**AT+RXSF **(%%)**:**  Get or Set the spreading factor of RX (7 to 12) (default:12)
168 -)))
76 +[[image:image-20220602111219-2.png]]
169 169  
170 -(((
171 -(% style="color:#037691" %)**AT+BW **(%%)**:       **Get or Set the bandwidth [0:125khz,1:250khz,2:500khz] (default:0)
172 -)))
173 173  
174 -(((
175 -(% 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)
176 -)))
79 +[[image:image-20220602111219-3.png]]
177 177  
178 -(((
179 -(% style="color:#037691" %)**AT+TDC **(%%)**:**  Get or set the application data transmission interval in ms(default 10 minutes)
180 -)))
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.
181 181  
182 -(((
183 -(% style="color:#037691" %)**AT+VER **(%%)**:**  Get firmware version number
184 -)))
185 -
186 -(((
187 -(% style="color:#037691" %)**AT+SEND **(%%)**:   **Set Custom sent hex data
188 -)))
189 -
190 -(((
191 -(% style="color:#037691" %)**AT+GROUPMOD **(%%)**: **Set or Get the grouping mode of the device (default: 0)
192 -)))
193 -
194 -(((
195 -(((
196 -(% 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)
197 -)))
198 -)))
199 -
200 -(((
201 -(% style="color:#037691" %)**AT+TRIG1 **(%%)**:**  Set or Get the DI1 pin interrupt trigger mode (default 0,0)
202 -)))
203 -
204 -(((
205 -(% style="color:#037691" %)**AT+TRIG2 **(%%)**:            **Set or Get the DI2 pin interrupt trigger mode (default 0,0)
206 -)))
207 -
208 -(((
209 -(% style="color:#037691" %)**AT+DI1TODO1 **(%%)**:    **Set or get the mode in which DI1 maps to DO1 (default 0)
210 -)))
211 -
212 -(((
213 -(% style="color:#037691" %)**AT+DI1TORO1 **(%%)**:    **Set or get the mode in which DI1 maps to RO1(default 0)
214 -)))
215 -
216 -(((
217 -(% style="color:#037691" %)**AT+DI2TODO2 **(%%)**:**  Set or get the mode in which DI2 maps to DO2(default 0)
218 -)))
219 -
220 -(((
221 -(% style="color:#037691" %)**AT+DI2TORO2 **(%%)**:    **Set or get the mode in which DI2 maps to RO2(default 0)
222 -)))
223 -
224 -(((
225 225  
226 -)))
227 -
228 -(((
229 -
230 -)))
231 -
232 -(((
233 -(% style="color:#4f81bd" %)**Example 1:**
234 -)))
235 -
236 -(((
237 -**AT+SEND=01020304 **will send a payload of 01020304
238 -)))
239 -
240 -(((
241 -
242 -)))
243 -
244 -(((
245 -(% style="color:#4f81bd" %)**Example 2: **
246 -)))
247 -
248 -(((
249 -**AT+TRIGx=a    **Trigger directly without triggering time
250 -)))
251 -
252 -(((
253 -**AT+TRIGx=a,b**
254 -)))
255 -
256 -(((
257 -a=0: falling edge;
258 -)))
259 -
260 -(((
261 -a=1: rising edge;
262 -)))
263 -
264 -(((
265 -a=2: falling edge or rising edge;
266 -)))
267 -
268 -(((
269 -b:  triggering time in milliseconds.
270 -)))
271 -
272 -(((
273 -AT+TRIGx=2,50  Falling edge or rising edge trigger, and the trigger time exceeds 50ms.
274 -)))
275 -
276 -(((
277 -
278 -)))
279 -
280 -(((
281 -(% style="color:#4f81bd" %)**Example 3: **
282 -)))
283 -
284 -(((
285 -**AT+DI1TODO1= maps value**
286 -)))
287 -
288 -(((
289 -**AT+DI1TORO1= maps value**
290 -)))
291 -
292 -(((
293 -**AT+DI2TODO2= maps value**
294 -)))
295 -
296 -(((
297 -**AT+DI2TORO2= maps value**
298 -)))
299 -
300 -(((
301 -
302 -)))
303 -
304 -(% border="1" style="background-color:#f7faff; color:black; width:706px" %)
305 -|=(% style="width: 102px;" %)(((
306 -Maps value
307 -)))|=(% style="width: 331px;" %)(((
308 -DIx to DOx
309 -)))|=(% style="width: 268px;" %)(((
310 -DIx to ROx
311 -)))
312 -|(% style="width:102px" %)(((
313 -0
314 -)))|(% style="width:331px" %)(((
315 -No Action
316 -)))|(% style="width:268px" %)(((
317 -No Action
318 -)))
319 -|(% style="width:102px" %)(((
320 -1
321 -)))|(% style="width:331px" %)(((
322 -If DIx is high, control DOx to output low level, If DIx is low, control DOx to output high level
323 -)))|(% style="width:268px" %)(((
324 -(((
325 -If DIx is high, control ROx to close,
326 -)))
327 -
328 -(((
329 -if DIx is low, control ROx to open
330 -)))
331 -)))
332 -|(% style="width:102px" %)(((
333 -2
334 -)))|(% style="width:331px" %)(((
335 -If DIx is high, control DOx to output high level, If DIx is low, control DOx to output low level
336 -)))|(% style="width:268px" %)(((
337 -(((
338 -If DIx is high, control ROx to open,
339 -)))
340 -
341 -(((
342 -if DIx is low, control ROx to close
343 -)))
344 -)))
345 -|(% style="width:102px" %)(((
346 -3
347 -)))|(% style="width:331px" %)(((
348 -DOx state flip
349 -)))|(% style="width:268px" %)(((
350 -ROx state flip
351 -)))
352 -
353 -(((
354 -(% style="color:#4f81bd" %)**Example 4: **
355 -)))
356 -
357 -(((
358 -**AT+GROUPMOD=0**  Set to point to point mode
359 -)))
360 -
361 -(((
362 -**AT+GROUPMOD=0,aa**  Set the TX group that controls the number of aa (The maximum value of aa is 8)
363 -)))
364 -
365 -(((
366 -(((
367 -**AT+GROUPMOD=1,bb**  Set to the RX group controlled by the TX group, numbered bb(The maximum value of aa is 8)
368 -)))
369 -)))
370 -
371 -(((
372 -**AT+GROUPMOD=0,2**  Set to control the TX group of the two RX groups
373 -)))
374 -
375 -(((
376 -**AT+GROUPMOD=1,1**  Set the RX group numbered 1
377 -)))
378 -
379 -(((
380 -**AT+GROUPMOD=1,2**  Set the RX group numbered 2
381 -)))
382 -
383 -
384 -== **2.4 Data Format** ==
385 -
386 -(((
387 -8 bytes of GROUPID + 9 bytes of payload + 4 bytes of checksum
388 -)))
389 -
390 -(((
391 -
392 -)))
393 -
394 -(((
395 -(% style="color:#4f81bd" %)**Payload:**
396 -)))
397 -
398 -(% border="1" style="background-color:#f7faff; color:black; width:938px" %)
399 -|=(% style="width: 123px;" %)(((
400 -**Size (bytes)**
401 -)))|=(% style="width: 107px;" %)(((
402 -1
403 -)))|=(% style="width: 107px;" %)(((
404 -1
405 -)))|=(% style="width: 107px;" %)(((
406 -1
407 -)))|=(% style="width: 107px;" %)(((
408 -1
409 -)))|=(% style="width: 107px;" %)(((
410 -1
411 -)))|=(% style="width: 107px;" %)(((
412 -1
413 -)))|=(% style="width: 107px;" %)(((
414 -1
415 -)))|=(% style="width: 107px;" %)(((
416 -1
417 -)))|=(% style="width: 107px;" %)(((
418 -1
419 -)))
420 -|(% style="width:123px" %)(((
421 -**Value**
422 -)))|(% style="width:38px" %)(((
423 -address
424 -)))|(% style="width:70px" %)(((
425 -request
426 -)))|(% style="width:52px" %)(((
427 -ACK
428 -)))|(% style="width:127px" %)(((
429 -(((
430 -DI1&
431 -)))
432 -
433 -(((
434 -DI1 level
435 -)))
436 -)))|(% style="width:101px" %)(((
437 -DI1TODO1
438 -)))|(% style="width:91px" %)(((
439 -DI1TORO1
440 -)))|(% style="width:111px" %)(((
441 -(((
442 -DI2&
443 -)))
444 -
445 -(((
446 -DI2 level
447 -)))
448 -)))|(% style="width:105px" %)(((
449 -DI2TODO2
450 -)))|(% style="width:106px" %)(((
451 -DI2TORO2
452 -)))
453 -
454 -(((
455 -(% style="color:#037691" %)**The first byte**(%%)**:**  00 is the broadcast address, 01-08 is the RX group number.
456 -)))
457 -
458 -(((
459 -(% style="color:#037691" %)**The second byte**(%%)**:**  send mapping request when not 0, not request when it is 0.
460 -)))
461 -
462 -(((
463 -(% style="color:#037691" %)**The third byte**(%%)**:**  ACK returned to the sender after the mapping is completed.
464 -)))
465 -
466 -(((
467 -(((
468 -(% 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.
469 -)))
470 -)))
471 -
472 -(((
473 -(% style="color:#037691" %)**The Fifth byte**(%%)**:       **DI1TODO1 when the interrupt is triggered, 0 when the interrupt is not triggered.
474 -)))
475 -
476 -(((
477 -(% style="color:#037691" %)**The Sixth byte**(%%)**:**  0 does not trigger interrupt when DI1TORO1 interrupt is triggered.
478 -)))
479 -
480 -(((
481 -(((
482 -(% 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.
483 -)))
484 -)))
485 -
486 -(((
487 -(% style="color:#037691" %)**The 8th byte**(%%)**:          **DI2TODO2 when the interrupt is triggered, 0 when the interrupt is not triggered.
488 -)))
489 -
490 -(((
491 -(% style="color:#037691" %)**The 9th byte**(%%)**:**  DI2TORO2 when an interrupt is triggered, 0 when an interrupt is not triggered.
492 -)))
493 -
494 -
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