Last modified by kai on 2024/09/06 10:00
<
From version < 51.11 >
edited by Xiaoling
on 2022/07/13 14:13
To version < 60.7 >
edited by Xiaoling
on 2023/03/27 14:07
>
Change comment: There is no comment for this version

Summary

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Content
... ... @@ -9,26 +9,25 @@
9 9  
10 10  Dragino LoRaWAN End Node support two types of AT Commands and Downlink Commands:
11 11  
12 -* **Common Commands:** They should be available for each sensor, such as: change uplink interval, reset device.
13 -* **Sensor Related Commands:** Only for special sensor, such as control relay, poll RS485 device.
12 +* (% style="color:blue" %)**Common Commands:** (%%) They should be available for each sensor, such as: change uplink interval, reset device.
13 +* (% style="color:blue" %)**Sensor Related Commands:** (%%) Only for special sensor, such as control relay, poll RS485 device.
14 14  
15 15  (((
16 16  **This page shows the common commands since Dragino LoRaWAN stack DR-LWS-005. Make sure the end node support stack higher than DR-LWS-005 before checking this page.**
17 -
18 18  )))
19 19  
19 +
20 20  = 2. How to use AT Commands or Downlink command =
21 21  
22 22  
23 -* For AT Command , See Devices User Manual for Device. The user manual can be found in each product page of [[Dragino Official Website>>url:http://www.dragino.com/]]
24 -* For LoRaWAN Downlink: The gateway transfer downlink command in HEX format. This page shows the HEX format downlink code for each command. but some servers use base64 as downlink code. Below are reference for how to use downlink command:
23 +* **AT Command** : See Devices User Manual for how to connect to device via USB TTL adapter and use. The user manual can be found in each product page of [[Dragino Official Website>>url:http://www.dragino.com/]]
24 +* **LoRaWAN Downlink Command**: The gateway transfer downlink command in HEX format. This page shows the Downlink Command In HEX format. Please note some LoRaWAN servers use base64 as downlink code so user need to convert HEX to Base64 and use. Below are references for how to use downlink command:
25 25  ** Use HEX format to send a downlink: [[TTN v3>>Notes for TTN]]
26 -** Use Base64 format to send a downlink: [[Chirpstack>>Notes for ChirpStack]]
26 +** Use Base64 format to send a downlink: [[Chirpstack>>Notes for ChirpStack]], [[How to Convert>>http://wiki.dragino.com/xwiki/bin/view/Main/Notes%20for%20ChirpStack/#H4.1ConvertHEXtoBase64]]?
27 27  ** See use note for more serves [[Servers Note>>doc:Main.WebHome]](IoT LoRaWAN Server)
28 28  
29 +(% style="display:none" %) (%%)
29 29  
30 -
31 -
32 32  = 3. Support End Node and firmware version =
33 33  
34 34  
... ... @@ -103,12 +103,10 @@
103 103  )))
104 104  )))
105 105  
105 +(% style="display:none" %) (%%)
106 106  
107 -
108 -
109 109  = 4. System Management Commands =
110 110  
111 -
112 112  == 4.1 Change Uplink Interval ==
113 113  
114 114  
... ... @@ -138,15 +138,14 @@
138 138  )))
139 139  
140 140  (((
141 -If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
138 +If the downlink payload=0100003C, it means set the END Node's Transmit Interval to 0x00003C=60(S), while type code is 01.
142 142  )))
143 143  
144 -* **Example 1**: Downlink Payload:** 0100001E** ~/~/ Set Transmit Interval (TDC) = 30 seconds
145 -* **Example 2**: Downlink Payload:** 0100003C** ~/~/ Set Transmit Interval (TDC) = 60 seconds
141 +* **Example 1**: Downlink Payload:** 0100001E**  ~/~/ Set Transmit Interval (TDC) = 30 seconds
142 +* **Example 2**: Downlink Payload:** 0100003C**  ~/~/ Set Transmit Interval (TDC) = 60 seconds
146 146  
144 +(% style="display:none" %) (%%)
147 147  
148 -
149 -
150 150  == 4.2 Reboot End Node ==
151 151  
152 152  
... ... @@ -155,10 +155,10 @@
155 155  
156 156  (% style="color:blue" %)**AT Command: ATZ**
157 157  
158 -(% border="1" style="background-color:#ffffcc; color:green; width:727.222px" %)
159 -|=(% colspan="3" %)ATZ: Trig a reset of the MCU
160 -|**Command Example**|**Function**|**Response**
161 -|ATZ|Reset MCU|(((
154 +(% border="1" style="background-color:#ffffcc; color:green; width:546px" %)
155 +|=(% colspan="3" style="width: 543px;" %)ATZ: Trig a reset of the MCU
156 +|(% style="width:157px" %)**Command Example**|(% style="width:92px" %)**Function**|(% style="width:294px" %)**Response**
157 +|(% style="width:157px" %)ATZ|(% style="width:92px" %)Reset MCU|(% style="width:294px" %)(((
162 162  Device reset and show booting info
163 163  
164 164  LSN50 Device/LoRa ST Module
... ... @@ -179,11 +179,10 @@
179 179  )))
180 180  
181 181  (((
182 -If the downlink payload=**04FF**, the end node will reboot.
183 -
184 -
178 +If the downlink payload=**04FF**, the end node will reboot.
185 185  )))
186 186  
181 +
187 187  == 4.3 Reset to factory Default ==
188 188  
189 189  
... ... @@ -192,10 +192,10 @@
192 192  
193 193  (% style="color:blue" %)**AT Command: AT+FDR**
194 194  
195 -(% border="1" style="background-color:#ffffcc; color:green; width:831.222px" %)
196 -|=(% colspan="3" style="width: 828px;" %)Reset to factory default
197 -|(% style="width:181px" %)**Command Example**|(% style="width:181px" %)**Function**|(% style="width:465px" %)**Response**
198 -|(% style="width:181px" %)AT+FDR|(% style="width:181px" %)Reset to factory default|(% style="width:465px" %)(((
190 +(% border="1" style="background-color:#ffffcc; color:green; width:789px" %)
191 +|=(% colspan="3" style="width: 786px;" %)Reset to factory default
192 +|(% style="width:154px" %)**Command Example**|(% style="width:175px" %)**Function**|(% style="width:456px" %)**Response**
193 +|(% style="width:154px" %)AT+FDR|(% style="width:175px" %)Reset to factory default|(% style="width:456px" %)(((
199 199  Device reset to factory default parameters and show booting info
200 200  
201 201  LSN50 Device/LoRa ST Module
... ... @@ -228,10 +228,10 @@
228 228  
229 229  (% style="color:blue" %)**AT Command: AT+VER**
230 230  
231 -(% border="1" style="background-color:#ffffcc; color:green; width:586px" %)
232 -|=(% colspan="3" style="width: 583px;" %)AT+VER: Image Version and Frequency Band
233 -|(% style="width:170px" %)**Command Example**|(% style="width:300px" %)**Function**|(% style="width:113px" %)**Response**
234 -|(% style="width:170px" %)AT+VER=?|(% style="width:300px" %)Show Image version and Frequency Band|(% style="width:113px" %)(((
226 +(% border="1" style="background-color:#ffffcc; color:green; width:542px" %)
227 +|=(% colspan="3" style="width: 539px;" %)AT+VER: Image Version and Frequency Band
228 +|(% style="width:157px" %)**Command Example**|(% style="width:295px" %)**Function**|(% style="width:86px" %)**Response**
229 +|(% style="width:157px" %)AT+VER=?|(% style="width:295px" %)Show Image version and Frequency Band|(% style="width:86px" %)(((
235 235  1.3 EU868
236 236  
237 237  OK
... ... @@ -250,7 +250,6 @@
250 250  (((
251 251  
252 252  
253 -
254 254  **xx: Software Type:**
255 255  )))
256 256  
... ... @@ -309,11 +309,8 @@
309 309  OK
310 310  )))
311 311  
312 -
313 -
314 314  = 5. Keys, IDs and EUIs management =
315 315  
316 -
317 317  == 5.1 Application EUI ==
318 318  
319 319  
... ... @@ -330,8 +330,8 @@
330 330  )))
331 331  |(% style="width:305px" %)AT+APPEUI=00 b3 d5 7e f0 00 4d 34|(% style="width:186px" %)Set the Application EUI|(% style="width:191px" %)OK
332 332  
324 +(% style="display:none" %) (%%)
333 333  
334 -
335 335  == 5.2 Application Key ==
336 336  
337 337  
... ... @@ -348,8 +348,8 @@
348 348  )))
349 349  |(% style="width:441px" %)AT+APPKEY=00 35 55 55 22 23 55 53 43 24 23 42 34 35 35 35|(% style="width:180px" %)Set the Application Key|(% style="width:350px" %)OK
350 350  
342 +(% style="display:none" %) (%%)
351 351  
352 -
353 353  == 5.3 Application Session Key ==
354 354  
355 355  
... ... @@ -368,8 +368,8 @@
368 368  OK
369 369  )))
370 370  
362 +(% style="display:none" %) (%%)
371 371  
372 -
373 373  == 5.4 Device Address ==
374 374  
375 375  
... ... @@ -388,8 +388,8 @@
388 388  )))
389 389  |(% style="width:192px" %)AT+DADDR=A8 40 41 FF|(% style="width:241px" %)Set the Application Session Key.|(% style="width:359px" %)OK
390 390  
382 +(% style="display:none" %) (%%)
391 391  
392 -
393 393  == 5.5 Device EUI ==
394 394  
395 395  
... ... @@ -408,8 +408,8 @@
408 408  OK
409 409  )))
410 410  
402 +(% style="display:none" %) (%%)
411 411  
412 -
413 413  == 5.6 Network ID ==
414 414  
415 415  
... ... @@ -426,8 +426,8 @@
426 426  )))
427 427  |(% style="width:191px" %)AT+NWKID=A8 40 41 FF|(% style="width:153px" %)Set the Network ID.|(% style="width:101px" %)OK
428 428  
420 +(% style="display:none" %) (%%)
429 429  
430 -
431 431  == 5.7 Network Session Key ==
432 432  
433 433  
... ... @@ -444,14 +444,12 @@
444 444  )))
445 445  |(% style="width:455px" %)AT+NWKSKEY=A8 40 41 FF FF 12 34 56 00 01 02 04 05 06 06 07|(% style="width:215px" %)Set the Network Session Key.|(% style="width:343px" %)OK
446 446  
438 +(% style="display:none" %) (%%)
447 447  
448 -
449 449  = 6. Joining and sending date on LoRaWAN network =
450 450  
451 -
452 452  == 6.1 Confirm Mode ==
453 453  
454 -
455 455  === 6.1.1  AT+CFM command before DR-LWS007 software stack ===
456 456  
457 457  
... ... @@ -475,12 +475,11 @@
475 475  
476 476  If the downlink payload=0501, it means set end node to use confirm mode, while type code is 05.
477 477  
478 -* Example 1: Downlink Payload: 0501 ~/~/ Set AT+CFM=1
479 -* Example 2: Downlink Payload: 0500 ~/~/ Set AT+CFM=0
467 +* **Example 1:** Downlink Payload: 0501  ~/~/ Set AT+CFM=1
468 +* **Example 2:** Downlink Payload: 0500  ~/~/ Set AT+CFM=0
480 480  
470 +(% style="display:none" %) (%%)
481 481  
482 -
483 -
484 484  === 6.1.2  AT+CFM command since DR-LWS007 software stack ===
485 485  
486 486  
... ... @@ -523,12 +523,11 @@
523 523  
524 524  If the downlink payload=05010101, it means set end node to use confirm mode, while type code is 05.
525 525  
526 -* Example 1: Downlink Payload: 05010101 ~/~/ Set AT+CFM=1,1,1
527 -* Example 2: Downlink Payload: 05000700 ~/~/ Set AT+CFM=0,7,0
514 +* **Example 1:** Downlink Payload: 05010101  ~/~/ Set AT+CFM=1,1,1
515 +* **Example 2:** Downlink Payload: 05000700  ~/~/ Set AT+CFM=0,7,0
528 528  
517 +(% style="display:none" %) (%%)
529 529  
530 -
531 -
532 532  == 6.2 Confirm Status ==
533 533  
534 534  
... ... @@ -537,15 +537,13 @@
537 537  
538 538  (% style="color:blue" %)**AT Command: AT+CFS**
539 539  
540 -(% border="1" style="background-color:#ffffcc; color:green; width:534.222px" %)
541 -|=(% colspan="3" style="width: 531px;" %)AT+CFS
542 -|(% style="width:156px" %)**Command Example**|(% style="width:193px" %)**Function**|(% style="width:178px" %)**Response**
543 -|(% style="width:156px" %)AT+CFS=?|(% style="width:193px" %)Get confirmation status|(% style="width:178px" %)0(((
527 +(% border="1" style="background-color:#ffffcc; color:green; width:463px" %)
528 +|=(% colspan="3" style="width: 460px;" %)AT+CFS
529 +|(% style="width:156px" %)**Command Example**|(% style="width:193px" %)**Function**|(% style="width:107px" %)**Response**
530 +|(% style="width:156px" %)AT+CFS=?|(% style="width:193px" %)Get confirmation status|(% style="width:107px" %)0(((
544 544  OK
545 545  )))
546 546  
547 -
548 -
549 549  == 6.3 Join LoRa® Network ==
550 550  
551 551  
... ... @@ -563,8 +563,6 @@
563 563  While Error in format, return AT_BUSY_ERROR
564 564  )))
565 565  
566 -
567 -
568 568  == 6.4 LoRa® Network Join Mode ==
569 569  
570 570  
... ... @@ -588,12 +588,11 @@
588 588  
589 589  If the downlink payload=2000, it means set the Network Join Mode, while type code is 20.
590 590  
591 -* **Example 1: **Downlink Payload: **2000** ~/~/ Set AT+NJM=0
592 -* **Example 2:** Downlink Payload: **2001** ~/~/ Set AT+NJM=1
574 +* **Example 1: **Downlink Payload: **2000                  ** ~/~/ Set AT+NJM=0
575 +* **Example 2:** Downlink Payload: **2001**  ~/~/ Set AT+NJM=1
593 593  
577 +(% style="display:none" %) (%%)
594 594  
595 -
596 -
597 597  == 6.5 LoRa® Network Join Status ==
598 598  
599 599  
... ... @@ -609,8 +609,8 @@
609 609  OK
610 610  )))
611 611  
594 +(% style="display:none" %) (%%)
612 612  
613 -
614 614  == 6.6 Print Last Received Data in Raw Format ==
615 615  
616 616  
... ... @@ -626,6 +626,8 @@
626 626  OK
627 627  )))
628 628  
611 +(% style="display:none" %) (%%)
612 +
629 629  == 6.7 Print Last Received Data in Binary Format ==
630 630  
631 631  
... ... @@ -641,6 +641,8 @@
641 641  OK
642 642  )))
643 643  
628 +(% style="display:none" %) (%%)
629 +
644 644  == 6.8 Send Text Data ==
645 645  
646 646  
... ... @@ -654,12 +654,11 @@
654 654  |(% style="width:201px" %)**Command Example**|(% style="width:340px" %)**Function**|(% style="width:446px" %)**Response**
655 655  |(% style="width:201px" %)AT+SEND=12:hello world|(% style="width:340px" %)Send text data along with the application port.|(% style="width:446px" %)OK(((
656 656  While Error in format, return
657 -
658 658  AT_BUSY_ERROR/AT_BUSY_ERROR/AT_NO_NETWORK_JOINED
659 -
660 -
661 661  )))
662 662  
646 +(% style="display:none" %) (%%)
647 +
663 663  == 6.9 Send Hexadecimal Data ==
664 664  
665 665  
... ... @@ -668,19 +668,18 @@
668 668  
669 669  (% style="color:blue" %)**AT Command: AT+SENDB**
670 670  
671 -(% border="1" style="background-color:#ffffcc; color:green; width:1120.22px" %)
672 -|=(% colspan="3" style="width: 1117px;" %)AT+SENDB
673 -|(% style="width:257px" %)**Command Example**|(% style="width:406px" %)**Function**|(% style="width:453px" %)**Response**
674 -|(% style="width:257px" %)AT+SENDB=12:abcdef0123456789|(% style="width:406px" %)Send hexadecimal data along with the application port.|(% style="width:453px" %)OK
675 -|(% style="width:257px" %)AT+SENDB=abcdef0123456789|(% style="width:406px" %)Send hexadecimal data along with the application port.|(% style="width:453px" %)While Error in format, return(((
676 -AT_PARAM_ERROR AT_BUSY_ERROR/AT_NO_NETWORK_JOINED
677 -
678 -
656 +(% border="1" style="background-color:#ffffcc; color:green; width:1101px" %)
657 +|=(% colspan="3" style="width: 1098px;" %)AT+SENDB
658 +|(% style="width:257px" %)**Command Example**|(% style="width:394px" %)**Function**|(% style="width:446px" %)**Response**
659 +|(% style="width:257px" %)AT+SENDB=12:abcdef0123456789|(% style="width:394px" %)Send hexadecimal data along with the application port.|(% style="width:446px" %)OK
660 +|(% style="width:257px" %)AT+SENDB=abcdef0123456789|(% style="width:394px" %)Send hexadecimal data along with the application port.|(% style="width:446px" %)While Error in format, return(((
661 +AT_PARAM_ERROR AT_BUSY_ERROR/AT_NO_NETWORK_JOINED
679 679  )))
680 680  
664 +(% style="display:none" %) (%%)
665 +
681 681  = 7. LoRaWAN network management =
682 682  
683 -
684 684  == 7.1 Adaptive Data Rate ==
685 685  
686 686  
... ... @@ -704,9 +704,10 @@
704 704  
705 705  If the downlink payload=2201, it means setting the adaptive data rate to 1, while type code is 22.
706 706  
707 -* **Example 1**: Downlink Payload: **2201**  ~/~/ Set AT+ADR=1.
708 -* **Example 2**: Downlink Payload: **2200FFFF** ~/~/ Set AT+ADR=0.
691 +* **Example 1**: Downlink Payload: **2201**  ~/~/ Set AT+ADR=1.
692 +* **Example 2**: Downlink Payload: **2200FFFF**  ~/~/ Set AT+ADR=0.
709 709  
694 +(% style="display:none" %) (%%)
710 710  
711 711  == 7.2 LoRa® Class ==
712 712  
... ... @@ -714,7 +714,7 @@
714 714  Feature: Get or Set the Device Class(Currently only support class A, class C).
715 715  
716 716  
717 -(% style="color:blue" %)**AT Command:AT+CLASS**
702 +(% style="color:blue" %)**AT Command:  AT+CLASS**
718 718  
719 719  (% border="1" style="background-color:#ffffcc; color:green; width:507.222px" %)
720 720  |=(% colspan="3" style="width: 504px;" %)AT+CLASS
... ... @@ -723,16 +723,17 @@
723 723  OK
724 724  )))
725 725  |(% style="width:163px" %)AT+CLASS=C|(% style="width:166px" %)Set the Device Class.|(% style="width:175px" %)OK(((
726 -
727 727  )))
728 728  
713 +(% style="display:none" %) (%%)
714 +
729 729  == 7.3 Duty Cycle Setting ==
730 730  
731 731  
732 -Feature: Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing.
718 +Feature: Get or Set the ETSI Duty Cycle setting** - 0**=disable, **1**=enable - Only for testing.
733 733  
734 734  
735 -(% style="color:blue" %)**AT Command:AT+DCS**
721 +(% style="color:blue" %)**AT Command:  AT+DCS**
736 736  
737 737  (% border="1" style="background-color:#ffffcc; color:green; width:515.222px" %)
738 738  |=(% colspan="3" style="width: 512px;" %)AT+DCS
... ... @@ -741,15 +741,21 @@
741 741  OK
742 742  )))
743 743  |(% style="width:165px" %)AT+DCS=1|(% style="width:239px" %)Set the ETSI Duty Cycle setting.|(% style="width:107px" %)OK(((
744 -
745 745  )))
746 746  
732 +(% style="display:none" %) (%%)
733 +
747 747  == 7.4 Data Rate ==
748 748  
749 749  
750 -Feature: Get or Set the Data Rate. (0-7 corresponding to DR_X) . Note: while set Data Rate, please use set Adptive Data Rate, ADR=0 first. otherwise device will response to server's ADR command and change the DR to the setting from server
737 +Feature: Get or Set the Data Rate. (0-7 corresponding to DR_X) .
751 751  
739 +(% style="color:red" %)
740 +**Notice:**
752 752  
742 +* User need to set Adaptive Data Rate(ADR)=0 first. otherwise device will respond to server's ADR command and change the DR according to server auto-adjustment.
743 +* Data Rate specifies Spreading Factor. The mapping varies in different frequency bands. User can check this link for detail. [[rp2-1.0.3-lorawan-regional-parameters.pdf>>https://lora-alliance.org/resource_hub/rp2-1-0-3-lorawan-regional-parameters/]]
744 +
753 753  (% style="color:blue" %)**AT Command: AT+DR**
754 754  
755 755  (% border="1" style="background-color:#ffffcc; color:green; width:466.222px" %)
... ... @@ -766,9 +766,10 @@
766 766  
767 767  If the downlink payload=220001FF, it means setting the data rate to 1, while type code is 22 00 aa FF.
768 768  
769 -* **Example 1**: Downlink Payload: **220001FF** ~/~/ Set AT+DR=1.
770 -* **Example 2**: Downlink Payload: **220000FF** ~/~/ Set AT+DR=0.
761 +* **Example 1**: Downlink Payload: **220001FF**  ~/~/ Set AT+DR=1.
762 +* **Example 2**: Downlink Payload: **220000FF**  ~/~/ Set AT+DR=0.
771 771  
764 +(% style="display:none" %) (%%)
772 772  
773 773  == 7.5 Frame Counter Downlink ==
774 774  
... ... @@ -776,7 +776,7 @@
776 776  Feature: Get or Set the Frame Counter Downlink.
777 777  
778 778  
779 -(% style="color:blue" %)**AT Command:AT+FCD**
772 +(% style="color:blue" %)**AT Command:  AT+FCD**
780 780  
781 781  (% border="1" style="background-color:#ffffcc; color:green; width:693.222px" %)
782 782  |=(% colspan="3" style="width: 690px;" %)AT+FCD
... ... @@ -793,7 +793,7 @@
793 793  Feature: Get or Set the Frame Counter Uplink.
794 794  
795 795  
796 -(% style="color:blue" %)**AT Command:AT+FCU**
789 +(% style="color:blue" %)**AT Command:  AT+FCU**
797 797  
798 798  (% border="1" style="background-color:#ffffcc; color:green; width:534.222px" %)
799 799  |=(% colspan="3" style="width: 531px;" %)AT+FCU
... ... @@ -802,9 +802,10 @@
802 802  OK
803 803  )))
804 804  |(% style="width:177px" %)AT+FCU=10|(% style="width:239px" %)Set the Frame Counter Uplink.|(% style="width:113px" %)OK(((
805 -
806 806  )))
807 807  
800 +(% style="display:none" %) (%%)
801 +
808 808  == 7.7 Join Accept Delay1 ==
809 809  
810 810  
... ... @@ -811,7 +811,7 @@
811 811  Feature: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms.
812 812  
813 813  
814 -(% style="color:blue" %)**AT Command:AT+JN1DL**
808 +(% style="color:blue" %)**AT Command:  AT+JN1DL**
815 815  
816 816  (% border="1" style="background-color:#ffffcc; color:green; width:537.222px" %)
817 817  |=(% colspan="3" style="width: 534px;" %)AT+JN1DL
... ... @@ -820,15 +820,17 @@
820 820  OK
821 821  )))
822 822  |(% style="width:164px" %)AT+JN1DL=10000|(% style="width:229px" %)Set the Join Accept Delay.|(% style="width:140px" %)OK(((
823 -
824 824  )))
825 825  
819 +(% style="display:none" %) (%%)
820 +
826 826  == 7.8 Join Accept Delay2 ==
827 827  
823 +
828 828  Feature: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms.
829 829  
830 830  
831 -(% style="color:blue" %)**AT Command:AT+JN2DL**
827 +(% style="color:blue" %)**AT Command:  AT+JN2DL**
832 832  
833 833  (% border="1" style="background-color:#ffffcc; color:green; width:538.222px" %)
834 834  |=(% colspan="3" style="width: 535px;" %)AT+JN2DL
... ... @@ -837,18 +837,19 @@
837 837  OK
838 838  )))
839 839  |(% style="width:160px" %)AT+JN2DL=20000|(% style="width:228px" %)Set the Join Accept Delay.|(% style="width:146px" %)OK(((
840 -
841 841  )))
842 842  
838 +(% style="display:none" %) (%%)
839 +
843 843  == 7.9 Public Network Mode ==
844 844  
845 845  
846 846  Feature: Get or Set the public network mode. (0: off, 1: on). A Public LoRaWAN network use 0x34 as syncword. Default Settings; PNM=1
847 847  
848 -(% style="color:red" %)Notice: If user build their own LoRaWAN server but still use syncword=0x34, this is still considered a public LoRaWAN network
845 +(% style="color:red" %)**Notice: If user build their own LoRaWAN server but still use syncword=0x34, this is still considered a public LoRaWAN network.**
849 849  
850 850  
851 -(% style="color:blue" %)**AT Command:AT+PNM**
848 +(% style="color:blue" %)**AT Command:  AT+PNM**
852 852  
853 853  (% border="1" style="background-color:#ffffcc; color:green; width:667.222px" %)
854 854  |=(% colspan="3" style="width: 664px;" %)AT+PNM
... ... @@ -867,6 +867,8 @@
867 867  )))
868 868  |(% style="width:166px" %)AT+PNM=0|(% style="width:225px" %)Set to use private network autoset syncword=0x12|(% style="width:272px" %)
869 869  
867 +(% style="display:none" %) (%%)
868 +
870 870  == 7.10 Receive Delay1 ==
871 871  
872 872  
... ... @@ -873,7 +873,7 @@
873 873  Feature: Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
874 874  
875 875  
876 -(% style="color:blue" %)**AT Command:AT+RX1DL**
875 +(% style="color:blue" %)**AT Command: AT+RX1DL**
877 877  
878 878  (% border="1" style="background-color:#ffffcc; color:green; width:408.222px" %)
879 879  |=(% colspan="3" style="width: 405px;" %)AT+RX1DL
... ... @@ -882,9 +882,9 @@
882 882  OK
883 883  )))
884 884  |(% style="width:155px" %)AT+RX1DL=1500|(% style="width:128px" %)Set the delay.|(% style="width:122px" %)OK(((
885 -
886 886  )))
887 887  
886 +(% style="display:none" %) (%%)
888 888  
889 889  == 7.11 Receive Delay2 ==
890 890  
... ... @@ -892,7 +892,7 @@
892 892  Feature: Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
893 893  
894 894  
895 -(% style="color:blue" %)**AT Command:AT+RX2DL**
894 +(% style="color:blue" %)**AT Command: AT+RX2DL**
896 896  
897 897  (% border="1" style="background-color:#ffffcc; color:green; width:481.222px" %)
898 898  |=(% colspan="3" style="width: 478px;" %)AT+RX2DL
... ... @@ -901,9 +901,9 @@
901 901  OK
902 902  )))
903 903  |(% style="width:175px" %)AT+RX2DL=2500|(% style="width:152px" %)Set the delay.|(% style="width:150px" %)OK(((
904 -
905 905  )))
906 906  
905 +(% style="display:none" %) (%%)
907 907  
908 908  == 7.12 Rx2 Window Data Rate ==
909 909  
... ... @@ -911,7 +911,7 @@
911 911  Feature: Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
912 912  
913 913  
914 -(% style="color:blue" %)**AT Command:AT+RX2DR**
913 +(% style="color:blue" %)**AT Command:  AT+RX2DR**
915 915  
916 916  (% border="1" style="background-color:#ffffcc; color:green; width:525.222px" %)
917 917  |=(% colspan="3" style="width: 522px;" %)AT+RX2DR
... ... @@ -920,9 +920,9 @@
920 920  OK
921 921  )))
922 922  |(% style="width:160px" %)AT+RX2DR=6|(% style="width:232px" %)Set the Rx2 window data rate.|(% style="width:130px" %)OK(((
923 -
924 924  )))
925 925  
924 +(% style="display:none" %) (%%)
926 926  
927 927  == 7.13 Rx2 Window Frequency ==
928 928  
... ... @@ -930,7 +930,7 @@
930 930  Feature: Get or Set the Rx2 window frequency
931 931  
932 932  
933 -(% style="color:blue" %)**AT Command:AT+RX2FQ**
932 +(% style="color:blue" %)**AT Command:  AT+RX2FQ**
934 934  
935 935  (% border="1" style="background-color:#ffffcc; color:green; width:587.222px" %)
936 936  |=(% colspan="3" style="width: 584px;" %)AT+RX2FQ
... ... @@ -939,9 +939,9 @@
939 939  OK
940 940  )))
941 941  |(% style="width:183px" %)AT+RX2FQ=434665000|(% style="width:240px" %)Set the Rx2 window frequency.|(% style="width:160px" %)OK(((
942 -
943 943  )))
944 944  
943 +(% style="display:none" %) (%%)
945 945  
946 946  == 7.14 Transmit Power ==
947 947  
... ... @@ -948,9 +948,11 @@
948 948  
949 949  Feature: Get or Set the Transmit Power(0-5, MAX:0, MIN:5, according to LoRaWAN Spec, or 40=10dB, 41 = 11dB, …, 50 = 20dB which is out of LoRaWAN spec. )
950 950  
950 +(% style="color:red" %)**Notice: Transmit Power might be changed by ADR from LoRaWAN server. So manually change TXP also remember to set AT+ADR=0 in sensor**
951 951  
952 -(% style="color:blue" %)**AT Command:AT+TXP**
953 953  
953 +(% style="color:blue" %)**AT Command:  AT+TXP**
954 +
954 954  (% border="1" style="background-color:#ffffcc; color:green; width:465.222px" %)
955 955  |=(% colspan="3" style="width: 462px;" %)AT+TXP
956 956  |(% style="width:161px" %)**Command Example**|(% style="width:189px" %)**Function**|(% style="width:112px" %)**Response**
... ... @@ -958,7 +958,6 @@
958 958  OK
959 959  )))
960 960  |(% style="width:161px" %)AT+TXP=1|(% style="width:189px" %)Set the Transmit Power.|(% style="width:112px" %)OK(((
961 -
962 962  )))
963 963  
964 964  Downlink Payload. The 4th byte of 0x22 downlink.
... ... @@ -965,11 +965,11 @@
965 965  
966 966  If the downlink payload=22000100, it means setting the TXP to 0.
967 967  
968 -* **Example 1**: Downlink Payload: **22000102** ~/~/ Set AT+TXP=2.
969 -* **Example 2**: Downlink Payload: **220000FF** ~/~/ Set AT+TXP=0.
968 +* **Example 1**: Downlink Payload: **22000102**  ~/~/ Set AT+TXP=2.
969 +* **Example 2**: Downlink Payload: **220000FF**  ~/~/ Set AT+TXP=0.
970 970  
971 +(% style="display:none" %) (%%)
971 971  
972 -
973 973  == 7.15 RSSI of the Last Received Packet ==
974 974  
975 975  
... ... @@ -985,6 +985,7 @@
985 985  OK
986 986  )))
987 987  
988 +(% style="display:none" %) (%%)
988 988  
989 989  == 7.16 SNR of the Last Received Packet ==
990 990  
... ... @@ -992,7 +992,7 @@
992 992  Feature: Get the SNR of the last received packet
993 993  
994 994  
995 -(% style="color:blue" %)**AT Command:AT+SNR**
996 +(% style="color:blue" %)**AT Command:  AT+SNR**
996 996  
997 997  (% border="1" style="background-color:#ffffcc; color:green; width:571.222px" %)
998 998  |=(% colspan="3" style="width: 568px;" %)AT+SNR
... ... @@ -1001,6 +1001,7 @@
1001 1001  OK
1002 1002  )))
1003 1003  
1005 +(% style="display:none" %) (%%)
1004 1004  
1005 1005  == 7.17 Application Port ==
1006 1006  
... ... @@ -1024,11 +1024,11 @@
1024 1024  
1025 1025  If the downlink payload=2301, it means set the application port to 1, while type code is 23.
1026 1026  
1027 -* **Example 1**: Downlink Payload: **2301** ~/~/ set the application port to 1
1028 -* **Example 2**: Downlink Payload:** 2305** ~/~/ set the application port to 5
1029 +* **Example 1**: Downlink Payload: **2301**  ~/~/ set the application port to 1
1030 +* **Example 2**: Downlink Payload:** 2305**  ~/~/ set the application port to 5
1029 1029  
1032 +(% style="display:none" %) (%%)
1030 1030  
1031 -
1032 1032  == 7.18 Single Channel Mode ==
1033 1033  
1034 1034  
... ... @@ -1045,9 +1045,11 @@
1045 1045  )))
1046 1046  |(% style="width:182px" %)AT+CHS=868100000|(% style="width:295px" %)Set Frequency for Single Channel Mode|(% style="width:122px" %)OK
1047 1047  
1050 +(% style="display:none" %) (%%)
1048 1048  
1049 1049  == 7.19 Eight Channel Mode ==
1050 1050  
1054 +
1051 1051  Feature: Get or Set eight channels mode,Only for US915,AU915,CN470.
1052 1052  
1053 1053  
... ... @@ -1063,17 +1063,17 @@
1063 1063  )))
1064 1064  |(% style="width:160px" %)AT+CHE=1|(% style="width:198px" %)Set eight channels mode|(% style="width:349px" %)OK
1065 1065  
1066 -(% style="color:blue" %)**Downlink Command: 0x24**
1070 +(% style="color:blue" %)**Downlink Command: 0x24 (LHT65,LHT65N Downlink Command:0x07)**
1067 1067  
1068 1068  Format: Command Code (0x24) followed by 1 bytes channel value.
1069 1069  
1070 1070  If the downlink payload=2401, it means set channel mode to 1, while type code is 24.
1071 1071  
1072 -* **Example 1**: Downlink Payload: 2401 ~/~/ set channel mode to 1
1073 -* **Example 2**: Downlink Payload: 2405 ~/~/ set channel mode to 5
1076 +* **Example 1**: Downlink Payload: 2401  ~/~/ set channel mode to 1
1077 +* **Example 2**: Downlink Payload: 2405  ~/~/ set channel mode to 5
1074 1074  
1079 +(% style="display:none" %) (%%)
1075 1075  
1076 -
1077 1077  == 7.20 Get or Set RXwindows1 timeout ==
1078 1078  
1079 1079  
... ... @@ -1090,23 +1090,19 @@
1090 1090  )))
1091 1091  |(% style="width:163px" %)AT+RX1WTO=60|(% style="width:201px" %)Set RXwindows1 timeout|(% style="width:93px" %)OK
1092 1092  
1093 -(((
1094 -
1097 +(% style="display:none" %) (%%)
1095 1095  
1096 -**AT+RX1TWO** is theRxSingle timeout value of receive window 1. If it is not set, then the queriedvalue is the default value. If it is set, then the queried value is the setvalue. AT+RX2TWO is thesame as above. The definitionof RxSingle timeout is as described in the following paragraph.
1097 -
1098 -
1099 +(((
1100 +(% style="color:blue" %)**AT+RX1WTO**(%%) is theRxSingle timeout value of receive window 1. If it is not set, then the queriedvalue is the default value. If it is set, then the queried value is the setvalue. AT+RX2TWO is thesame as above. The definitionof RxSingle timeout is as described in the following paragraph.
1099 1099  )))
1100 1100  
1101 1101  [[image:image-20220526162535-1.png]]
1102 1102  
1103 -
1104 1104  (((
1105 1105  Increasing thisvalue is equal to extending the time that the receiving window is opened, butthe corresponding power consumption will also increase. Properly increasingthis value can increase the success rate of the downlink.
1106 -
1107 -
1108 1108  )))
1109 1109  
1109 +
1110 1110  == 7.21 Get or Set RXwindows2 timeout ==
1111 1111  
1112 1112  
... ... @@ -1123,6 +1123,7 @@
1123 1123  )))
1124 1124  |(% style="width:190px" %)AT+RX2WTO=20|(% style="width:199px" %)Set RXwindows2 timeout|(% style="width:104px" %)OK
1125 1125  
1126 +(% style="display:none" %) (%%)
1126 1126  
1127 1127  == 7.22 Setting up uplinkdwelltime (as923, au915) ==
1128 1128  
... ... @@ -1146,11 +1146,11 @@
1146 1146  
1147 1147  If the downlink payload=2501, it means set uplinkdwelltime to 1, while type code is 25.
1148 1148  
1149 -* **Example 1**: Downlink Payload: **2501** ~/~/ set uplinkdwelltime to 1
1150 -* **Example 2**: Downlink Payload: **2500** ~/~/ set uplinkdwelltime to 0
1150 +* **Example 1**: Downlink Payload: **2501**  ~/~/ set uplinkdwelltime to 1
1151 +* **Example 2**: Downlink Payload: **2500**  ~/~/ set uplinkdwelltime to 0
1151 1151  
1153 +(% style="display:none" %) (%%)
1152 1152  
1153 -
1154 1154  == 7.23 Set Packet Receiving Response Level ==
1155 1155  
1156 1156  
... ... @@ -1157,7 +1157,7 @@
1157 1157  Feature: Get or Set packet receiving response level. This feature is used to set compatible with different LoRaWAN servers. If RPL doesn;t match , user will see strange message in the server portal.
1158 1158  
1159 1159  
1160 -RPL value:
1161 +**RPL value:**
1161 1161  
1162 1162  * **AT+RPL=0:** Device won't immediately reply any downlink commands from platform.
1163 1163  * **AT+RPL=1:** Device will immediately reply message to Unconfirmed Data Down. Payload is 0x00.
... ... @@ -1165,14 +1165,12 @@
1165 1165  * **AT+RPL=3:** Device will immediately reply message to MAC Command. Payload is 0x00 and requied response header for this command.
1166 1166  * **AT+RPL=4: **Device will immediately reply message to Confirmed Data Down & MAC Command. Payload is 0x00 and requied response header for these two commands.
1167 1167  
1169 +**Case Analyes:**
1168 1168  
1169 -Case Analyes:
1170 -
1171 1171  * For Class A devices, AT+RPL=0 is ok. that is defaut settings in software.
1172 1172  * For Class C devices used in ChirpStack, need to set AT+RPL=4 because Chirpstack require immedietely reply message to MAC Command.
1173 1173  * For Class C devices used in TTI, need to set AT+RPL=4 because TTI require immediately reply message to Confirmed Data Down & MAC Command.
1174 1174  
1175 -
1176 1176  (% style="color:blue" %)**AT Command: AT+RPL**
1177 1177  
1178 1178  (% border="1" style="background-color:#ffffcc; color:green; width:536.222px" %)
... ... @@ -1189,23 +1189,27 @@
1189 1189  
1190 1190  If the downlink payload=2101, it means set packet receiving response level to 1, while type code is 21.
1191 1191  
1192 -* **Example 1**: Downlink Payload: **2101** ~/~/ set packet receiving response level to 1
1193 -* **Example 2**: Downlink Payload: **2102** ~/~/ set packet receiving response level to 2
1191 +* **Example 1**: Downlink Payload: **2101**  ~/~/ set packet receiving response level to 1
1192 +* **Example 2**: Downlink Payload: **2102**  ~/~/ set packet receiving response level to 2
1194 1194  
1194 +(% style="display:none" %) (%%)
1195 1195  
1196 -
1197 1197  == 7.24 Controls NBTrans in unconfirmed uplink mode（LWS007 NBTrans:Set retransmission packets) ==
1198 1198  
1199 1199  
1200 1200  (% style="color:blue" %)**AT Command: AT+SETMAXNBTRANS **
1201 1201  
1202 -(% border="1" style="background-color:#ffffcc; color:green; width:536.222px" %)
1203 -|=(% colspan="3" style="width: 533px;" %)AT+**SETMAXNBTRANS**
1204 -|(% style="width:160px" %)**Command Example**|(% style="width:263px" %)**Function**|(% style="width:109px" %)**Response**
1205 -|(% style="width:160px" %)**AT+SETMAXNBTRANS=1，0**|(% style="width:263px" %)Value1: set the maximum NBTrans.|(% style="width:109px" %)1(((
1201 +(% border="1" style="background-color:#ffffcc; color:green; width:589px" %)
1202 +|=(% colspan="3" style="width: 586px;" %)AT+**SETMAXNBTRANS**
1203 +|(% style="width:227px" %)**Command Example**|(% style="width:300px" %)**Function**|(% style="width:87px" %)**Response**
1204 +|(% style="width:227px" %)**AT+SETMAXNBTRANS=1，0**|(% style="width:300px" %)Value1: set the maximum NBTrans.|(% style="width:87px" %)1(((
1206 1206  OK
1207 1207  )))
1208 -|(% style="width:160px" %)**AT+SETMAXNBTRANS=？，1**|(% style="width:263px" %)value2: 0: uplink fcnt doesn't change for each NBTrans; 1: uplink fcnt increase by 1 for each NBTrans.|(% style="width:109px" %)(((
1207 +|(% style="width:227px" %)**AT+SETMAXNBTRANS=？，1**|(% style="width:300px" %)(((
1208 +value2: 0: uplink fcnt doesn't change for each NBTrans;
1209 +
1210 +1: uplink fcnt increase by 1 for each NBTrans.
1211 +)))|(% style="width:87px" %)(((
1209 1209  1
1210 1210  
1211 1211  OK
... ... @@ -1217,16 +1217,21 @@
1217 1217  
1218 1218  If the downlink payload=330100, it means set end node to use confirm mode, while type code is 33.
1219 1219  
1220 -* Example 1: Downlink Payload: 330100 ~/~/ Set AT+SETMAXNBTRANS=1,0
1221 -* Example 2: Downlink Payload: 330201 ~/~/ Set AT+SETMAXNBTRANS=2,1
1223 +* Example 1: Downlink Payload: 330100  ~/~/ Set AT+SETMAXNBTRANS=1,0
1224 +* Example 2: Downlink Payload: 330201  ~/~/ Set AT+SETMAXNBTRANS=2,1
1222 1222  
1226 +(% style="display:none" %) (%%)
1223 1223  
1224 -
1225 1225  == 7.25 Device offline rejoining （LWS007) ==
1226 1226  
1227 1227  
1228 1228  (% style="color:blue" %)**AT Command: AT+DDETECT**
1229 1229  
1233 +AT+DDETECT=<Flag>,<ACK_Timout_1>,<ACK_Timout_2> (Default Value: AT+DDETECT=1,1440,2880)
1234 +
1235 +* ACK_Timout_1: Unit: min
1236 +* ACK_Timout_2: Unit: min
1237 +
1230 1230  (% border="1" style="background-color:#ffffcc; color:green; width:710.222px" %)
1231 1231  |=(% colspan="3" style="width: 707px;" %)AT+**DDETECT**
1232 1232  |(% style="width:160px" %)**Command Example**|(% style="width:198px" %)**Function**|(% style="width:349px" %)**Response**
... ... @@ -1258,16 +1258,20 @@
1258 1258  OK
1259 1259  )))
1260 1260  
1261 -(% style="color:blue" %)**Downlink Command: 0x33**
1269 +(% style="color:blue" %)**Downlink Command: 0x32**
1262 1262  
1263 1263  Format: Command Code (0x32) followed by 2 bytes mode value.
1264 1264  
1265 -If the downlink payload=320105A00B40, it means set end node to use confirm mode, while type code is 33.
1273 +If the downlink payload=320105A00B40, it means set end node to use confirm mode, while type code is 32.
1266 1266  
1267 -* Example 1: Downlink Payload: 320105A00B40 ~/~/ Set AT+DDETECT=1,1440,2880
1275 +* **Example 1:** Downlink Payload: 320105A00B40  ~/~/ Set AT+DDETECT=1,1440,2880
1276 +** 0x01 : Flag
1277 +** 0x05A0: ACK_Timout_1 : 1440minutes (24 hours)
1278 +** 0x0B40: ACK_Timout_2 : 2880minutes (48 hours)
1279 +** **Explain**: Enable Online Detect, if end node doesn't receive any downlink within ACK_Timout_1( 1440 minutes or 24 hours). End node will use confirmed uplink to send packets during ACK_Timout_1 (the 24th hour) to ACK_Timout_2 ( the 48th hour). If from the 24th to 48th hour, end node got an downlink from server, it will switch back to unconfirmed uplink. end node will restart ACK_Timout_1. If from the 24th to 48th hour, end node still not got any downlink, means device doesn't get ACK from server within last 48 hours. Device will process rejoin, rejoin request interval is AT+RJTDC period. For AU915/ US915, device will use the sub-band used for last join.
1268 1268  
1281 +(% style="display:none" %) (%%)
1269 1269  
1270 -
1271 1271  == 7.26 Request the server to send an ACK ==
1272 1272  
1273 1273  
... ... @@ -1281,10 +1281,10 @@
1281 1281  )))
1282 1282  |(% style="width:160px" %)**AT+PNACKMD=0**|(% style="width:263px" %)off request the server to send an ACK|(% style="width:109px" %)(((
1283 1283  0
1284 -
1285 1285  OK
1286 1286  )))
1287 1287  
1299 +(% style="display:none" %) (%%)
1288 1288  
1289 1289  == 7.27 Adjust network rejoining interval ==
1290 1290  
... ... @@ -1294,13 +1294,13 @@
1294 1294  (% border="1" style="background-color:#ffffcc; color:green; width:727.222px" %)
1295 1295  |=(% colspan="3" style="width: 724px;" %)AT+RJTDC
1296 1296  |(% style="width:165px" %)**Command Example**|(% style="width:227px" %)**Function**|(% style="width:329px" %)**Response**
1297 -|(% style="width:165px" %)AT+RJTDC=?|(% style="width:227px" %)Show the ReJoin data transmission interval in min|(% style="width:329px" %)30000(((
1309 +|(% style="width:165px" %)AT+RJTDC=?|(% style="width:227px" %)Show the ReJoin data transmission interval in min|(% style="width:329px" %)30(((
1298 1298  OK
1299 1299  
1300 -the interval is 30000ms = 30s
1312 +the interval is 30 min
1301 1301  )))
1302 -|(% style="width:165px" %)AT+RJTDC=60000|(% style="width:227px" %)Set the ReJoin data transmission interval in min|(% style="width:329px" %)OK(((
1303 -Set the ReJoin data transmission interval to 60000ms = 60 seconds
1314 +|(% style="width:165px" %)AT+RJTDC=60|(% style="width:227px" %)Set the ReJoin data transmission interval in min|(% style="width:329px" %)OK(((
1315 +Set the ReJoin data transmission interval to 60 min
1304 1304  )))
1305 1305  
1306 1306  (% style="color:blue" %)**Downlink Command: 0x26**
... ... @@ -1309,22 +1309,21 @@
1309 1309  
1310 1310  If the downlink payload=26000A, it means set end node to use confirm mode, while type code is 26.
1311 1311  
1312 -* Example 1: Downlink Payload: 26000A ~/~/ Set AT+RJTDC=10
1313 -* Example 2: Downlink Payload: 260002 ~/~/ Set AT+RJTDC=2
1324 +* **Example 1:** Downlink Payload: 26000A  ~/~/ Set AT+RJTDC=10
1325 +* **Example 2: **Downlink Payload: 260002  ~/~/ Set AT+RJTDC=2
1314 1314  
1327 +(% style="display:none" %) (%%)
1315 1315  
1316 -
1317 1317  = 8. AT Commands Combination =
1318 1318  
1319 -
1320 1320  == 8.1 Set a fix RX2DR for downlink window ==
1321 1321  
1322 1322  
1323 -* **AT+ADR=0             ** **~-~->**  Disable ADR first
1324 -* **AT+RX2DR=xxxx**  **~-~->**  Set xxxx to your wanted DataRate
1334 +* (% style="color:blue" %)**AT+ADR=0             **(%%) **~-~->**  Disable ADR first
1335 +* (% style="color:blue" %)**AT+RX2DR=xxxx**   (%%) **~-~->**  Set xxxx to your wanted DataRate
1325 1325  
1337 +(% style="display:none" %) (%%)
1326 1326  
1327 -
1328 1328  == 8.2 Use Downlink Command to set a fix uplink DR ==
1329 1329  
1330 1330  
... ... @@ -1332,6 +1332,10 @@
1332 1332  
1333 1333  **Same as:**
1334 1334  
1335 -* AT+ADR=0  [[Reference>>||anchor="H7.1AdaptiveDataRate"]]
1336 -* AT+DR=5  [[Reference>>||anchor="H7.4DataRate"]]
1337 -* AT+TXP=0  [[Reference>>||anchor="H7.14TransmitPower"]]
1346 +* AT+ADR=0  [[Reference>>||anchor="H7.1AdaptiveDataRate"]]
1347 +
1348 +* AT+DR=5  [[Reference>>||anchor="H7.4DataRate"]]
1349 +
1350 +* AT+TXP=0  [[Reference>>||anchor="H7.14TransmitPower"]]
1351 +
1352 +

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