Last modified by Saxer Lin on 2025/04/15 17:24
<
From version < 101.2 >
edited by Xiaoling
on 2022/10/13 16:38
To version < 94.1 >
edited by Bei Jinggeng
on 2022/08/24 15:57
>
Change comment: There is no comment for this version

Summary

Details

Page properties
Author
... ... @@ -1,1 +1,1 @@
1 -XWiki.Xiaoling
1 +XWiki.Bei
Content
... ... @@ -15,7 +15,6 @@
15 15  
16 16  = 1.Introduction =
17 17  
18 -
19 19  == 1.1 What is LT Series I/O Controller ==
20 20  
21 21  (((
... ... @@ -58,7 +58,7 @@
58 58  (((
59 59  
60 60  
61 -(% style="color:#037691" %)**Hardware System:**
60 +**Hardware System:**
62 62  )))
63 63  
64 64  * (((
... ... @@ -83,7 +83,7 @@
83 83  (((
84 84  
85 85  
86 -(% style="color:#037691" %)**Interface for Model: LT22222-L:**
85 +**Interface for Model: LT22222-L:**
87 87  )))
88 88  
89 89  * (((
... ... @@ -108,7 +108,7 @@
108 108  (((
109 109  
110 110  
111 -(% style="color:#037691" %)**LoRa Spec:**
110 +**LoRa Spec:**
112 112  )))
113 113  
114 114  * (((
... ... @@ -184,8 +184,6 @@
184 184  * Firmware upgradable via program port
185 185  * Counting
186 186  
187 -
188 -
189 189  == 1.4  Applications ==
190 190  
191 191  
... ... @@ -196,8 +196,6 @@
196 196  * Smart Cities
197 197  * Smart Factory
198 198  
199 -
200 -
201 201  == 1.5 Hardware Variants ==
202 202  
203 203  
... ... @@ -212,8 +212,6 @@
212 212  * 1 x Counting Port
213 213  )))
214 214  
215 -
216 -
217 217  = 2. Power ON Device =
218 218  
219 219  
... ... @@ -221,8 +221,6 @@
221 221  
222 222  (((
223 223  PWR will on when device is properly powered.
224 -
225 -
226 226  )))
227 227  
228 228  [[image:1653297104069-180.png]]
... ... @@ -231,7 +231,6 @@
231 231  
232 232  = 3. Operation Mode =
233 233  
234 -
235 235  == 3.1 How it works? ==
236 236  
237 237  
... ... @@ -307,8 +307,6 @@
307 307  * (% style="color:blue" %)**MOD5**(%%): Single DI Counting + 2 x AVI + 1 x ACI + DO + RO
308 308  * (% style="color:blue" %)**ADDMOD6**(%%): Trigger Mode, Optional, used together with MOD1 ~~ MOD5
309 309  
310 -
311 -
312 312  === 3.3.1 AT+MOD~=1, 2ACI+2AVI ===
313 313  
314 314  
... ... @@ -328,7 +328,7 @@
328 328  * DI is for digital input. DIx=1: high or float, DIx=0: low.
329 329  * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
330 330  
331 -(% style="color:red" %)**Note: DI3 and DO3 bit are not valid for LT-22222-L**
319 +(% style="color:red" %)Note: DI3 and DO3 bit are not valid for LT-22222-L
332 332  
333 333  For example if payload is: [[image:image-20220523175847-2.png]]
334 334  
... ... @@ -348,8 +348,6 @@
348 348  * [1] RO1 relay channel is close and the RO1 LED is ON.
349 349  * [0] RO2 relay channel is open and RO2 LED is OFF;
350 350  
351 -
352 -
353 353  **LT22222-L:**
354 354  
355 355  * [1] DI2 channel is high input and DI2 LED is ON;
... ... @@ -365,7 +365,6 @@
365 365  ** DO1 is high in case there is load between DO1 and V+.
366 366  ** DO1 LED is off in both case
367 367  
368 -
369 369  === 3.3.2 AT+MOD~=2, (Double DI Counting) ===
370 370  
371 371  
... ... @@ -389,7 +389,7 @@
389 389  * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
390 390  
391 391  (((
392 -(% style="color:red" %)**Note: DO3 bit is not valid for LT-22222-L.**
377 +(% style="color:red" %)Note: DO3 bit is not valid for LT-22222-L.
393 393  )))
394 394  
395 395  (((
... ... @@ -411,8 +411,6 @@
411 411  
412 412  
413 413  (% style="color:#4f81bd" %)**AT Commands for counting:**
414 -
415 -
416 416  )))
417 417  
418 418  (((
... ... @@ -454,7 +454,7 @@
454 454  * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
455 455  
456 456  (((
457 -(% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
440 +(% style="color:red" %)Note: DO3 is not valid for LT-22222-L.
458 458  )))
459 459  
460 460  
... ... @@ -498,7 +498,7 @@
498 498  * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
499 499  
500 500  (((
501 -(% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
484 +(% style="color:red" %)Note: DO3 is not valid for LT-22222-L.
502 502  )))
503 503  
504 504  (((
... ... @@ -559,7 +559,7 @@
559 559  )))
560 560  
561 561  (((
562 -(% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
545 +(% style="color:red" %)Note: DO3 is not valid for LT-22222-L.
563 563  )))
564 564  
565 565  (((
... ... @@ -605,7 +605,6 @@
605 605  
606 606  Format: AT+AVLIM=<AV1_LIMIT_LOW>,< AV1_LIMIT_HIGH>,<AV2_LIMIT_LOW>,< AV2_LIMIT_HIGH>
607 607  
608 -
609 609  **Example:**
610 610  
611 611  AT+AVLIM=3000,6000,0,2000   (If AVI1 voltage lower than 3v or higher than 6v. or AV2 voltage is higher than 2v, LT will trigger Uplink)
... ... @@ -618,7 +618,6 @@
618 618  
619 619  Format: AT+ACLIM=<AC1_LIMIT_LOW>,< AC1_LIMIT_HIGH>,<AC2_LIMIT_LOW>,< AC2_LIMIT_HIGH>
620 620  
621 -
622 622  **Example:**
623 623  
624 624  AT+ACLIM=10000,15000,0,0   (If ACI1 voltage lower than 10mA or higher than 15mA, trigger an uplink)
... ... @@ -637,7 +637,6 @@
637 637  AT+ DTRI =1,0   (Enable DI1 trigger / disable DI2 trigger)
638 638  
639 639  
640 -
641 641  (% style="color:#037691" %)**Downlink Command to set Trigger Condition:**
642 642  
643 643  Type Code: 0xAA. Downlink command same as AT Command **AT+AVLIM, AT+ACLIM**
... ... @@ -686,7 +686,6 @@
686 686  10100000: Means the system has configure to use the trigger: AC1_LOW and AV2_LOW
687 687  
688 688  
689 -
690 690  (% style="color:#4f81bd" %)**TRI Status1**(%%) is a combination to show which condition is trigger. Totally 1byte as below
691 691  
692 692  [[image:image-20220524090249-3.png]]
... ... @@ -698,7 +698,6 @@
698 698  10000000: Means this packet is trigger by AC1_LOW. Means voltage too low.
699 699  
700 700  
701 -
702 702  (% style="color:#4f81bd" %)**TRI_DI FLAG+STA **(%%)is a combination to show which condition is trigger. Totally 1byte as below
703 703  
704 704  [[image:image-20220524090456-4.png]]
... ... @@ -712,7 +712,6 @@
712 712  00000101: Means both DI1 and DI2 trigger are enabled.
713 713  
714 714  
715 -
716 716  (% style="color:#4f81bd" %)**Enable/Disable MOD6 **(%%): 0x01: MOD6 is enable. 0x00: MOD6 is disable.
717 717  
718 718  Downlink command to poll MOD6 status:
... ... @@ -723,13 +723,12 @@
723 723  
724 724  
725 725  
726 -
727 727  === 3.3.7 Payload Decoder ===
728 728  
729 729  (((
730 730  
731 731  
732 -**Decoder for TTN/loraserver/ChirpStack**:  [[https:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
708 +**Decoder for TTN/loraserver/ChirpStack**:  [[https:~~/~~/www.dropbox.com/sh/wtrzu7avdtkmn3z/AACK5NwOMkU9jnvf1uCMuqrVa?dl=0>>https://www.dropbox.com/sh/wtrzu7avdtkmn3z/AACK5NwOMkU9jnvf1uCMuqrVa?dl=0]]
733 733  )))
734 734  
735 735  
... ... @@ -747,8 +747,6 @@
747 747  
748 748  * (% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for LT-22222-L.  User can see these commands below:
749 749  
750 -
751 -
752 752  === 3.4.1 Common Commands ===
753 753  
754 754  
... ... @@ -811,7 +811,6 @@
811 811  
812 812  **0x08 FF     **~/~/ Poll an uplink
813 813  
814 -
815 815  **Example**: 0x08FF, ask device to send an Uplink
816 816  
817 817  
... ... @@ -898,8 +898,6 @@
898 898  * (% style="color:#037691" %)**Downlink Payload (prefix 0x09 01 ):**
899 899  * **0x09 01 aa bb cc    ** ~/~/ same as AT+TRIG1=aa,0x(bb cc)
900 900  
901 -
902 -
903 903  ==== 3.4.2.8 Trigger2 – Set DI2 as trigger ====
904 904  
905 905  
... ... @@ -978,7 +978,7 @@
978 978  (((
979 979  
980 980  
981 -(% style="color:red" %)**Note: ATDC setting must be more than 5min**
952 +(% style="color:red" %)Note: ATDC setting must be more than 5min
982 982  )))
983 983  
984 984  
... ... @@ -1006,11 +1006,11 @@
1006 1006  [[image:image-20220524092754-5.png]]
1007 1007  
1008 1008  (((
1009 -(% style="color:red" %)**Note: For LT-22222-L, there is no DO3, the last byte can use any value.**
980 +(% style="color:red" %)Note: For LT-22222-L, there is no DO3, the last byte can use any value.
1010 1010  )))
1011 1011  
1012 1012  (((
1013 -(% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
984 +(% style="color:red" %)Device will upload a packet if downlink code executes successfully.
1014 1014  )))
1015 1015  
1016 1016  
... ... @@ -1059,7 +1059,7 @@
1059 1059  
1060 1060   Latching time. Unit: ms
1061 1061  
1062 -(% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1033 +(% style="color:red" %)Device will upload a packet if downlink code executes successfully.
1063 1063  
1064 1064  
1065 1065  **Example payload:**
... ... @@ -1108,7 +1108,7 @@
1108 1108  [[image:image-20220524093724-9.png]]
1109 1109  )))
1110 1110  
1111 -(% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1082 +(% style="color:red" %)Device will upload a packet if downlink code executes successfully.
1112 1112  
1113 1113  
1114 1114  
... ... @@ -1139,12 +1139,12 @@
1139 1139  
1140 1140  (% style="color:#4f81bd" %)**Third Byte(bb)**(%%): Control Method and Ports status:
1141 1141  
1142 -[[image:image-20221008095908-1.png||height="364" width="564"]]
1113 +[[image:image-20220714135731-1.png||height="406" width="627"]]
1143 1143  
1144 1144  
1145 1145  (% style="color:#4f81bd" %)**Fourth/Fifth/Sixth/Seventh Bytes(cc)**(%%): Latching time. Unit: ms
1146 1146  
1147 -(% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1118 +(% style="color:red" %)Device will upload a packet if downlink code executes successfully.
1148 1148  
1149 1149  
1150 1150  **Example payload:**
... ... @@ -1167,6 +1167,7 @@
1167 1167  
1168 1168  
1169 1169  
1141 +
1170 1170  ==== 3.4.2.16 Counting ~-~- Voltage threshold counting ====
1171 1171  
1172 1172  
... ... @@ -1239,14 +1239,11 @@
1239 1239  (((
1240 1240  range: aa bb cc:0 to 16777215,  (unit:second)
1241 1241  
1242 -
1243 -
1244 1244  
1245 1245  )))
1246 1246  
1247 1247  ==== 3.4.2.20 Reset save DR DO state ====
1248 1248  
1249 -
1250 1250  * (% style="color:#037691" %)**AT Command:**
1251 1251  
1252 1252  **AT+RODORET=1  **~/~/ RODO will close when the device joining the network. (default)
... ... @@ -1261,11 +1261,8 @@
1261 1261  (((
1262 1262  
1263 1263  
1264 -
1265 -
1266 1266  ==== 3.4.2.21 Encrypted payload ====
1267 1267  
1268 -
1269 1269  * (% style="color:#037691" %)**AT Command:**
1270 1270  
1271 1271  **AT+DECRYPT=1  **~/~/ The payload is uploaded without encryption
... ... @@ -1273,11 +1273,8 @@
1273 1273  **AT+DECRYPT=0  **~/~/Encrypt when uploading payload (default)
1274 1274  
1275 1275  
1276 -
1277 -
1278 1278  ==== 3.4.2.22 Get sensor value ====
1279 1279  
1280 -
1281 1281  * (% style="color:#037691" %)**AT Command:**
1282 1282  
1283 1283  **AT+GETSENSORVALUE=0  **~/~/ The serial port gets the reading of the current sensor
... ... @@ -1285,11 +1285,8 @@
1285 1285  **AT+GETSENSORVALUE=1  **~/~/The serial port gets the current sensor reading and uploads it.
1286 1286  
1287 1287  
1288 -
1289 -
1290 1290  ==== 3.4.2.23 Resets the downlink packet count ====
1291 1291  
1292 -
1293 1293  * (% style="color:#037691" %)**AT Command:**
1294 1294  
1295 1295  **AT+DISFCNTCHECK=0  **~/~/ When the downlink packet count sent by the server is less than the node downlink packet count or exceeds 16384, the node will no longer receive downlink packets (default)
... ... @@ -1297,11 +1297,8 @@
1297 1297  **AT+DISFCNTCHECK=1  **~/~/When the downlink packet count sent by the server is less than the node downlink packet count or exceeds 16384, the node resets the downlink packet count and keeps it consistent with the server downlink packet count.
1298 1298  
1299 1299  
1300 -
1301 -
1302 1302  ==== 3.4.2.24 When the limit bytes are exceeded, upload in batches ====
1303 1303  
1304 -
1305 1305  * (% style="color:#037691" %)**AT Command:**
1306 1306  
1307 1307   **AT+DISMACANS=0**  ~/~/ When the MACANS of the reply server plus the payload exceeds the maximum number of bytes of 11 bytes (DR0 of US915, DR2 of AS923, DR2 of AU195), the node will send a packet with a payload of 00 and a port of 4. (default)
... ... @@ -1313,12 +1313,8 @@
1313 1313  
1314 1314  **0x21 00 01 ** ~/~/ Set  the DISMACANS=1
1315 1315  
1316 -
1317 -
1318 -
1319 1319  ==== 3.4.2.25 Copy downlink to uplink ====
1320 1320  
1321 -
1322 1322  * (% style="color:#037691" %)**AT Command**(%%)**:**
1323 1323  
1324 1324   **AT+RPL=5**  ~/~/ After receiving the package from the server, it will immediately upload the content of the package to the server, the port number is 100.
... ... @@ -1325,13 +1325,10 @@
1325 1325  
1326 1326  Example：**aa xx xx xx xx**         ~/~/ aa indicates whether the configuration has changed, 00 is yes, 01 is no; xx xx xx xx are the bytes sent.
1327 1327  
1328 -
1329 1329  [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220823173747-6.png?width=1124&height=165&rev=1.1||alt="image-20220823173747-6.png"]]
1330 1330  
1331 1331  For example, sending 11 22 33 44 55 66 77 will return invalid configuration 00 11 22 33 44 55 66 77.
1332 1332  
1333 -
1334 -
1335 1335  [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220823173833-7.png?width=1124&height=149&rev=1.1||alt="image-20220823173833-7.png"]]
1336 1336  
1337 1337  For example, if 01 00 02 58 is issued, a valid configuration of 01 01 00 02 58 will be returned.
... ... @@ -1340,16 +1340,11 @@
1340 1340  
1341 1341  ==== 3.4.2.26 Query version number and frequency band 、TDC ====
1342 1342  
1343 -
1344 1344  * (((
1345 -(% style="color:#037691" %)**Downlink Payload**(%%)**:**
1346 -
1347 -**26 01  ** ~/~/  Downlink 26 01 can query device upload frequency, frequency band, software version number, TDC time.
1348 -
1349 -
1294 +(% style="color:#037691" %)**Downlink Payload**(%%)**: 26 01  ** ~/~/ Downlink 26 01 can query device upload frequency, frequency band, software version number, TDC time.
1350 1350  )))
1351 1351  
1352 -**Example：**
1297 +Example：
1353 1353  
1354 1354  [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220823173929-8.png?width=1205&height=76&rev=1.1||alt="image-20220823173929-8.png"]]
1355 1355  
... ... @@ -1455,10 +1455,10 @@
1455 1455  )))
1456 1456  
1457 1457  * (((
1458 -Connect sensor's output to DI1-
1403 +Connect sensor’s output to DI1-
1459 1459  )))
1460 1460  * (((
1461 -Connect sensor's VCC to DI1+.
1406 +Connect sensor’s VCC to DI1+.
1462 1462  )))
1463 1463  
1464 1464  (((
... ... @@ -1466,11 +1466,11 @@
1466 1466  )))
1467 1467  
1468 1468  (((
1469 -[[image:1653968155772-850.png||height="23" width="19"]]**= DI1**+** / 1K.**
1414 +[[image:1653968155772-850.png||height="23" width="19"]]**= DI1+ / 1K.**
1470 1470  )))
1471 1471  
1472 1472  (((
1473 -If** DI1+ **= **12v**, the [[image:1653968155772-850.png||height="23" width="19"]]= 12mA , So the LT-22222-L will be able to detect this active signal.
1418 +If DI1+ = 12v, the [[image:1653968155772-850.png||height="23" width="19"]]= 12mA , So the LT-22222-L will be able to detect this active signal.
1474 1474  )))
1475 1475  
1476 1476  (((
... ... @@ -1488,10 +1488,10 @@
1488 1488  )))
1489 1489  
1490 1490  * (((
1491 -Connect sensor's output to DI1+
1436 +Connect sensor’s output to DI1+
1492 1492  )))
1493 1493  * (((
1494 -Connect sensor's GND DI1-.
1439 +Connect sensor’s GND DI1-.
1495 1495  )))
1496 1496  
1497 1497  (((
... ... @@ -1521,10 +1521,10 @@
1521 1521  )))
1522 1522  
1523 1523  * (((
1524 -Connect sensor's output to DI1+ with a serial 50K resistor
1469 +Connect sensor’s output to DI1+ with a serial 50K resistor
1525 1525  )))
1526 1526  * (((
1527 -Connect sensor's GND DI1-.
1472 +Connect sensor’s GND DI1-.
1528 1528  )))
1529 1529  
1530 1530  (((
... ... @@ -1591,7 +1591,6 @@
1591 1591  
1592 1592  [[image:image-20220524100215-9.png]]
1593 1593  
1594 -
1595 1595  [[image:image-20220524100215-10.png||height="382" width="723"]]
1596 1596  
1597 1597  
... ... @@ -1965,7 +1965,7 @@
1965 1965  
1966 1966  (((
1967 1967  (% style="color:blue" %)**Step1**(%%)**:** Download [[flash loader>>url:https://www.st.com/content/st_com/en/products/development-tools/software-development-tools/stm32-software-development-tools/stm32-programmers/flasher-stm32.html]].
1968 -(% style="color:blue" %)**Step2**(%%)**:** Download the [[LT Image files>>url:https://www.dropbox.com/sh/g99v0fxcltn9r1y/AADKXQ2v5ZT-S3sxdmbvE7UAa/LT-22222-L/image?dl=0&subfolder_nav_tracking=1]].
1912 +(% style="color:blue" %)**Step2**(%%)**:** Download the [[LT Image files>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]].
1969 1969  (% style="color:blue" %)**Step3**(%%)**:** Open flashloader; choose the correct COM port to update.
1970 1970  
1971 1971  
... ... @@ -2021,7 +2021,6 @@
2021 2021  (((
2022 2022  Assume we have a LG02 working in the frequency 868400000 now , below is the step.
2023 2023  
2024 -
2025 2025  
2026 2026  )))
2027 2027  )))
... ... @@ -2028,14 +2028,10 @@
2028 2028  
2029 2029  (((
2030 2030  (% style="color:blue" %)**Step1**(%%):  Log in TTN, Create an ABP device in the application and input the network session key (NETSKEY), app session key (APPSKEY) from the device.
2031 -
2032 -
2033 2033  )))
2034 2034  
2035 2035  (((
2036 2036  [[image:1653360231087-571.png||height="401" width="727"]]
2037 -
2038 -
2039 2039  )))
2040 2040  
2041 2041  (((
... ... @@ -2043,11 +2043,8 @@
2043 2043  )))
2044 2044  
2045 2045  
2046 -
2047 2047  (((
2048 2048  (% style="color:blue" %)**Step2**(%%)**:  **Run AT Command to make LT work in Single frequency & ABP mode. Below is the AT commands:
2049 -
2050 -
2051 2051  )))
2052 2052  
2053 2053  (((
... ... @@ -2102,17 +2102,8 @@
2102 2102  After restart, the status before power failure will be read from flash.
2103 2103  
2104 2104  
2105 -== 5.7 Can i set up LT-22222-L as a NC(Normal Close) Relay? ==
2106 2106  
2107 -LT-22222-L built-in relay is NO (Normal Open). User can use an external relay to achieve Normal Close purpose. Diagram as below:
2108 -
2109 -[[image:image-20221006170630-1.png||height="610" width="945"]]
2110 -
2111 -
2112 -
2113 2113  = 6. Trouble Shooting =
2114 -
2115 -
2116 2116  )))
2117 2117  
2118 2118  (((
... ... @@ -2172,8 +2172,6 @@
2172 2172  * (% style="color:red" %)**IN865**(%%):  LT with frequency bands IN865
2173 2173  * (% style="color:red" %)**CN779**(%%):  LT with frequency bands CN779
2174 2174  
2175 -
2176 -
2177 2177  = 8. Packing Info =
2178 2178  
2179 2179  
... ... @@ -2191,8 +2191,6 @@
2191 2191  * Package Size / pcs : 14.5 x 8 x 5 cm
2192 2192  * Weight / pcs : 170g
2193 2193  
2194 -
2195 -
2196 2196  = 9. Support =
2197 2197  
2198 2198  
... ... @@ -2213,3 +2213,5 @@
2213 2213  * LT-22222-L: [[http:~~/~~/www.dragino.com/products/lora-lorawan-end-node/item/156-lt-22222-l.html>>url:http://www.dragino.com/products/lora-lorawan-end-node/item/156-lt-22222-l.html]]
2214 2214  * [[Datasheet, Document Base>>https://www.dropbox.com/sh/gxxmgks42tqfr3a/AACEdsj_mqzeoTOXARRlwYZ2a?dl=0]]
2215 2215  * [[Hardware Source>>url:https://github.com/dragino/Lora/tree/master/LT/LT-33222-L/v1.0]]
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