Last modified by Edwin Chen on 2022/11/22 09:38
<
From version < 18.1 >
edited by Edwin Chen
on 2022/06/02 15:24
To version < 8.7 >
edited by Xiaoling
on 2022/06/02 14:19
>
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Title
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1 -Point to Point Communication of LT-22222-L
1 + Point to Point Communication of LT-22222-L
Author
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1 -XWiki.Edwin
1 +XWiki.Xiaoling
Content
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1 -**Contents： **
2 -
1 +{{box cssClass="floatinginfobox" title="**Contents**"}}
3 3  {{toc/}}
3 +{{/box}}
4 4  
5 -
6 -
7 -
8 8  = **1. Overview** =
9 9  
10 10  (((
... ... @@ -15,18 +15,19 @@
15 15  [[Point to Point Software for LT-22222-L>>https://github.com/dragino/LT-22222-L]].
16 16  )))
17 17  
15 +== ==
18 18  
19 19  = **2. Features for this firmware** =
20 20  
19 +
21 21  == **2.1  Point To Point** ==
22 22  
23 -=== **2.1.1 Overview** ===
24 24  
25 -
26 26  [[image:image-20220602111219-1.png||height="472" width="972"]]
27 27  
28 28  
29 -=== **2.2.2 Configure** ===
26 +(% class="wikigeneratedid" id="H2.2.Configure" %)
27 +(% style="color:blue" %)**Configure:**
30 30  
31 31  
32 32  (% border="1" style="background-color:#f7faff; color:black; width:500px" %)
... ... @@ -41,452 +41,170 @@
41 41  |AT+DI2TODO2=2 |AT+DI2TODO2=2
42 42  |AT+DI2TORO2=2|AT+DI2TORO2=2
43 43  
44 -=== **2.2.3 Serial port display** ===
42 +== **2.2  Point To Mult-Point ** ==
45 45  
46 46  
47 -(% class="wikigeneratedid" %)
48 48  [[image:image-20220602111219-2.png]]
49 49  
50 50  
51 -(% class="wikigeneratedid" %)
52 52  [[image:image-20220602111219-3.png]]
53 53  
54 -(% class="wikigeneratedid" %)
55 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 56  
57 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 -(((
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.
118 -)))
119 -
120 -
121 121  == **2.3 AT command** ==
122 122  
123 123  
124 -(((
125 125  (% style="color:#037691" %)**ATZ** (%%)**: ** Trig a reset of the MCU
126 -)))
127 127  
128 -(((
129 129  (% style="color:#037691" %)**AT+FDR** (%%)**:**  Reset Parameters to Factory Default, Keys Reserve
130 -)))
131 131  
132 -(((
133 133  (% style="color:#037691" %)**AT+FCU** (%%)**:**  Get or Set the Frame Counter Uplink
134 -)))
135 135  
136 -(((
137 137  (% style="color:#037691" %)**AT+FCD** (%%)**:**  Get or Set the Frame Counter Downlink
138 -)))
139 139  
140 -(((
141 141  (% style="color:#037691" %)**AT+TXP** (%%)**:**  Get or Set the transmit power, the maximum is 20dBm (default is 14dBm)
142 -)))
143 143  
144 -(((
145 -(% style="color:#037691" %)**AT+SYNC** (%%)**:**  Get or Set the Sync word [1:0x34,0:0x12] (default is 1)
146 -)))
66 +(% style="color:#037691" %)**AT+SYNC** (%%)**:**  Get or Set the Sync word [1:0x34,0:0x12] (default is 1)
147 147  
148 -(((
149 149  (% style="color:#037691" %)**AT+PMB** (%%)**:    **Get or Set the preamble (default:8)
150 -)))
151 151  
152 -(((
153 153  (% style="color:#037691" %)**AT+TXCHS **(%%)**:** Get or Set the transmit frequency of TX (default:868700000)
154 -)))
155 155  
156 -(((
157 157  (% style="color:#037691" %)**AT+TXSF **(%%)**:**  Get or Set the spreading factor of TX (7 to 12) (default:12)
158 -)))
159 159  
160 -(((
161 161  (% style="color:#037691" %)**AT+RXCHS **(%%)**:** Get or Set the transmit frequency of RX (default:869000000)
162 -)))
163 163  
164 -(((
165 165  (% style="color:#037691" %)**AT+RXSF **(%%)**:**  Get or Set the spreading factor of RX (7 to 12) (default:12)
166 -)))
167 167  
168 -(((
169 169  (% style="color:#037691" %)**AT+BW **(%%)**:       **Get or Set the bandwidth [0:125khz,1:250khz,2:500khz] (default:0)
170 -)))
171 171  
172 -(((
173 173  (% 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)
174 -)))
175 175  
176 -(((
177 177  (% style="color:#037691" %)**AT+TDC **(%%)**:**  Get or set the application data transmission interval in ms(default 10 minutes)
178 -)))
179 179  
180 -(((
181 -(% style="color:#037691" %)**AT+VER **(%%)**:**  Get firmware version number
182 -)))
84 +(% style="color:#037691" %)**AT+VER **(%%)**:**  Get firmware version number
183 183  
184 -(((
185 -(% style="color:#037691" %)**AT+SEND **(%%)**:   **Set Custom sent hex data
186 -)))
86 +(% style="color:#037691" %)**AT+SEND **(%%)**:    **Set Custom sent hex data
187 187  
188 -(((
189 189  (% style="color:#037691" %)**AT+GROUPMOD **(%%)**: **Set or Get the grouping mode of the device (default: 0)
190 -)))
191 191  
192 -(((
193 -(((
194 194  (% 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)
195 -)))
196 -)))
197 197  
198 -(((
199 199  (% style="color:#037691" %)**AT+TRIG1 **(%%)**:**  Set or Get the DI1 pin interrupt trigger mode (default 0,0)
200 -)))
201 201  
202 -(((
203 203  (% style="color:#037691" %)**AT+TRIG2 **(%%)**:            **Set or Get the DI2 pin interrupt trigger mode (default 0,0)
204 -)))
205 205  
206 -(((
207 207  (% style="color:#037691" %)**AT+DI1TODO1 **(%%)**:    **Set or get the mode in which DI1 maps to DO1 (default 0)
208 -)))
209 209  
210 -(((
211 211  (% style="color:#037691" %)**AT+DI1TORO1 **(%%)**:    **Set or get the mode in which DI1 maps to RO1(default 0)
212 -)))
213 213  
214 -(((
215 215  (% style="color:#037691" %)**AT+DI2TODO2 **(%%)**:**  Set or get the mode in which DI2 maps to DO2(default 0)
216 -)))
217 217  
218 -(((
219 219  (% style="color:#037691" %)**AT+DI2TORO2 **(%%)**:    **Set or get the mode in which DI2 maps to RO2(default 0)
220 -)))
221 221  
222 -(((
223 -
224 -)))
225 225  
226 -(((
227 -
228 -)))
229 229  
230 -(((
231 231  (% style="color:#4f81bd" %)**Example 1:**
232 -)))
233 233  
234 -(((
235 235  **AT+SEND=01020304 **will send a payload of 01020304
236 -)))
237 237  
238 -(((
239 -
240 -)))
241 241  
242 -(((
243 243  (% style="color:#4f81bd" %)**Example 2: **
244 -)))
245 245  
246 -(((
247 -**AT+TRIGx=a    **Trigger directly without triggering time
248 -)))
113 +**AT+TRIGx=a  **Trigger directly without triggering time
249 249  
250 -(((
251 251  **AT+TRIGx=a,b**
252 -)))
253 253  
254 -(((
255 255  a=0: falling edge;
256 -)))
257 257  
258 -(((
259 259  a=1: rising edge;
260 -)))
261 261  
262 -(((
263 263  a=2: falling edge or rising edge;
264 -)))
265 265  
266 -(((
267 267  b:  triggering time in milliseconds.
268 -)))
269 269  
270 -(((
271 271  AT+TRIGx=2,50  Falling edge or rising edge trigger, and the trigger time exceeds 50ms.
272 -)))
273 273  
274 -(((
275 -
276 -)))
277 277  
278 -(((
279 279  (% style="color:#4f81bd" %)**Example 3: **
280 -)))
281 281  
282 -(((
283 283  **AT+DI1TODO1= maps value**
284 -)))
285 285  
286 -(((
287 287  **AT+DI1TORO1= maps value**
288 -)))
289 289  
290 -(((
291 291  **AT+DI2TODO2= maps value**
292 -)))
293 293  
294 -(((
295 295  **AT+DI2TORO2= maps value**
296 -)))
297 297  
298 -(((
299 -
300 -)))
301 301  
302 302  (% border="1" style="background-color:#f7faff; color:black; width:706px" %)
303 -|=(% style="width: 102px;" %)(((
304 -Maps value
305 -)))|=(% style="width: 331px;" %)(((
306 -DIx to DOx
307 -)))|=(% style="width: 268px;" %)(((
308 -DIx to ROx
309 -)))
310 -|(% style="width:102px" %)(((
311 -0
312 -)))|(% style="width:331px" %)(((
313 -No Action
314 -)))|(% style="width:268px" %)(((
315 -No Action
316 -)))
317 -|(% style="width:102px" %)(((
318 -1
319 -)))|(% style="width:331px" %)(((
320 -If DIx is high, control DOx to output low level, If DIx is low, control DOx to output high level
321 -)))|(% style="width:268px" %)(((
322 -(((
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" %)(((
323 323  If DIx is high, control ROx to close,
324 -)))
325 325  
326 -(((
327 327  if DIx is low, control ROx to open
328 328  )))
329 -)))
330 -|(% style="width:102px" %)(((
331 -2
332 -)))|(% style="width:331px" %)(((
333 -If DIx is high, control DOx to output high level, If DIx is low, control DOx to output low level
334 -)))|(% style="width:268px" %)(((
335 -(((
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" %)(((
336 336  If DIx is high, control ROx to open,
337 -)))
338 338  
339 -(((
340 340  if DIx is low, control ROx to close
341 341  )))
342 -)))
343 -|(% style="width:102px" %)(((
344 -3
345 -)))|(% style="width:331px" %)(((
346 -DOx state flip
347 -)))|(% style="width:268px" %)(((
348 -ROx state flip
349 -)))
152 +|(% style="width:102px" %)3|(% style="width:331px" %)DOx state flip|(% style="width:268px" %)ROx state flip
350 350  
351 -(((
154 +
352 352  (% style="color:#4f81bd" %)**Example 4: **
353 -)))
354 354  
355 -(((
356 356  **AT+GROUPMOD=0**  Set to point to point mode
357 -)))
358 358  
359 -(((
360 360  **AT+GROUPMOD=0,aa**  Set the TX group that controls the number of aa (The maximum value of aa is 8)
361 -)))
362 362  
363 -(((
364 -(((
365 365  **AT+GROUPMOD=1,bb**  Set to the RX group controlled by the TX group, numbered bb(The maximum value of aa is 8)
366 -)))
367 -)))
368 368  
369 -(((
370 370  **AT+GROUPMOD=0,2**  Set to control the TX group of the two RX groups
371 -)))
372 372  
373 -(((
374 374  **AT+GROUPMOD=1,1**  Set the RX group numbered 1
375 -)))
376 376  
377 -(((
378 378  **AT+GROUPMOD=1,2**  Set the RX group numbered 2
379 -)))
380 380  
381 381  
170 +
382 382  == **2.4 Data Format** ==
383 383  
384 -(((
385 385  8 bytes of GROUPID + 9 bytes of payload + 4 bytes of checksum
386 -)))
387 387  
388 -(((
389 -
390 -)))
391 391  
392 -(((
393 -(% style="color:#4f81bd" %)**Payload:**
394 -)))
176 +**Payload:**
395 395  
396 396  (% border="1" style="background-color:#f7faff; color:black; width:938px" %)
397 -|=(% style="width: 123px;" %)(((
398 -**Size (bytes)**
399 -)))|=(% style="width: 107px;" %)(((
400 -1
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 -)))
418 -|(% style="width:123px" %)(((
419 -**Value**
420 -)))|(% style="width:38px" %)(((
421 -address
422 -)))|(% style="width:70px" %)(((
423 -request
424 -)))|(% style="width:52px" %)(((
425 -ACK
426 -)))|(% style="width:127px" %)(((
427 -(((
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" %)(((
428 428  DI1&
429 -)))
430 430  
431 -(((
432 432  DI1 level
433 -)))
434 -)))|(% style="width:101px" %)(((
435 -DI1TODO1
436 -)))|(% style="width:91px" %)(((
437 -DI1TORO1
438 -)))|(% style="width:111px" %)(((
439 -(((
184 +)))|(% style="width:101px" %)DI1TODO1|(% style="width:91px" %)DI1TORO1|(% style="width:111px" %)(((
440 440  DI2&
441 -)))
442 442  
443 -(((
444 444  DI2 level
445 -)))
446 -)))|(% style="width:105px" %)(((
447 -DI2TODO2
448 -)))|(% style="width:106px" %)(((
449 -DI2TORO2
450 -)))
188 +)))|(% style="width:105px" %)DI2TODO2|(% style="width:106px" %)DI2TORO2
451 451  
452 -(((
453 453  (% style="color:#037691" %)**The first byte**(%%)**:**  00 is the broadcast address, 01-08 is the RX group number.
454 -)))
455 455  
456 -(((
457 457  (% style="color:#037691" %)**The second byte**(%%)**:**  send mapping request when not 0, not request when it is 0.
458 -)))
459 459  
460 -(((
461 461  (% style="color:#037691" %)**The third byte**(%%)**:**  ACK returned to the sender after the mapping is completed.
462 -)))
463 463  
464 -(((
465 -(((
466 466  (% 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.
467 -)))
468 -)))
469 469  
470 -(((
471 471  (% style="color:#037691" %)**The Fifth byte**(%%)**:       **DI1TODO1 when the interrupt is triggered, 0 when the interrupt is not triggered.
472 -)))
473 473  
474 -(((
475 475  (% style="color:#037691" %)**The Sixth byte**(%%)**:**  0 does not trigger interrupt when DI1TORO1 interrupt is triggered.
476 -)))
477 477  
478 -(((
479 -(((
480 480  (% 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.
481 -)))
482 -)))
483 483  
484 -(((
485 485  (% style="color:#037691" %)**The 8th byte**(%%)**:          **DI2TODO2 when the interrupt is triggered, 0 when the interrupt is not triggered.
486 -)))
487 487  
488 -(((
489 489  (% style="color:#037691" %)**The 9th byte**(%%)**:**  DI2TORO2 when an interrupt is triggered, 0 when an interrupt is not triggered.
490 -)))
491 491  
492 492  
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