Changes for page Notes for ChirpStack
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... ... @@ -45,7 +45,7 @@ 45 45 46 46 **Step 1: Add application** 47 47 48 -[[image:image-202 30702094608-1.png||height="537" width="1015"]]48 +[[image:image-20240831154333-1.png||height="553" width="1074"]] 49 49 50 50 51 51 **Step 2:Fill name** ... ... @@ -629,6 +629,136 @@ 629 629 [[image:image-20220531174046-19.png]] 630 630 631 631 632 += 9. Chirpstack Multicast Configuration = 633 + 634 + 635 +== 9.1 Introduction == 636 + 637 +ChirpStack has support for creating multicast-groups to which devices can be assigned. When enqueueing a downlink payload for a multicast-group, ChirpStack will analyze which gateways must be used for broadcasting to cover the complete multicast-group. This means that potentially, a single multicast downlink payload will be emitted multiple times. 638 + 639 +Multicast can be used for the following device-classes: 640 + 641 +* Class-B 642 +* Class-C 643 + 644 +== 9.2 Example to configure chirpstack Multicast == 645 + 646 + 647 +This section illustrates how to configure ChirpStack Multicast. Below is the network structure, we use our LPS8v2 as the LoRaWAN gateway and two SN50v3-LB as the LoRaWAN end-node here. 648 + 649 +[[image:image-20240923105725-1.png]] 650 + 651 + 652 +This example assumes users already have: 653 + 654 +* SN50v3-LB register on ChirpStack server already 655 +* The user is able to see the data on the ChirpStack server device page. 656 + 657 +(% class="wikigeneratedid" %) 658 +(% style="color:red" %)**Note: **(%%)SN50v3-LB must enable CLASS C and DISFCNTCHECK(The downlink fcnt is not compared with the fcnt of the node). 659 + 660 +(% class="wikigeneratedid" %) 661 +AT command: **AT+CLASS=C** 662 + 663 +(% class="wikigeneratedid" %) 664 + **AT+DISFCNTCHECK=1** 665 + 666 + 667 +=== Step 1. Create the multicast group === 668 + 669 + 670 +Create the multicast group on the corresponding **Application~-~->multicast groups~-~->Add multicast-group** interface, For example, multicast_test01_au915 671 + 672 +[[image:image-20240923141847-3.png||height="620" width="1207"]] 673 + 674 + 675 +Enter the Multicast address,Multicast network session key,Multicast application session key. 676 + 677 +Use the default LoRaWAN settings, as below: 678 + 679 +* EU868: 869525000hz, DR0 680 + 681 +* US915: 923300000hz, DR8 682 + 683 +* CN470: 505300000hz, DR0 684 + 685 +* AU915: 923300000hz, DR8 686 + 687 +* AS923: 923200000hz, DR2 688 + 689 +* KR920: 921900000hz, DR0 690 + 691 +* IN865: 866550000hz, DR2 692 + 693 +* RU864: 869100000hz, DR0 694 + 695 +Group type: **Class-C** 696 + 697 +Class-C scheduling type : **Delay** 698 + 699 +[[image:image-20240923142446-5.png||height="720" width="1208"]] 700 + 701 + 702 +=== Step 2. Add gateways and devices to the multicast group === 703 + 704 + 705 +Select a gateway on the "**Gateways**" screen, click "**selected gateways"**, and click "**Add to multicast-group**" to add the gateway to the corresponding multicast group, for example, **multicast_test01_au915**. 706 + 707 +[[image:image-20240923144335-6.png||height="619" width="1209"]] 708 + 709 +[[image:image-20240923144418-7.png||height="572" width="1206"]] 710 + 711 + 712 +On the **Application->Devices** interface, select two SN50v3-LB nodes registered with multicast support, and then click "**Selected devices**". and click "**Add to multicast-group**" to add the node to the corresponding multicast group 713 + 714 +[[image:image-20240923144749-9.png||height="623" width="1211"]] 715 + 716 + 717 +Access the multicast group to check whether two SN50V3-LBs and gateways are added successfully 718 + 719 +[[image:image-20240923145148-10.png||height="601" width="1218"]] 720 + 721 + 722 +=== Step 3. Use the API for multicast Downlink === 723 + 724 + 725 +To use API Downlink, user first need to generate an API key 726 + 727 +[[image:image-20240923145624-18.png||height="429" width="1211"]] 728 + 729 +[[image:image-20240923145520-16.png||height="422" width="1212"]] 730 + 731 + 732 +For example:**[[https:~~/~~/www.chirpstack.io/docs/chirpstack/api/index.html>>url:https://www.chirpstack.io/docs/chirpstack/api/index.html]]** 733 + 734 +[[image:image-20240923145953-21.png||height="808" width="1222"]] 735 + 736 + 737 +Users can access the Linux console of the gateway via SSH, and then use the curl command to multicast Downlink 738 + 739 +The format is as follows: 740 + 741 +(% class="box infomessage" %) 742 +((( 743 +curl -X POST 'http:~/~/**Chirpstack_Server_Address**:8090/api/multicast-groups/**Multicast_Groups_ID**/queue' -H "Content-Type: application/json" -H "Authorization: Bearer **eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJhdWQiOiJjaGlycHN0YWNrIiwiaXNzIjoiY2hpcnBzdGFjayIsInN1YiI6IjM3YmRiNzBjLTNjODgtNDFjMi04YmQ2LTgyMDI4ZjdkNzY3NyIsInR5cCI6ImtleSJ9.p1xvRP1PAdwLnLAJn9w6ef612KM8oPZSa_2v4UYPV0w**" -d '{ 744 + "queueItem": { 745 + "data": "EjRWeA==", 746 + "fCnt": 0, 747 + "fPort": 123 748 + } 749 +}' 750 +))) 751 + 752 +In the command,eyJ........._2v4UYPV0w is the API key, which can be obtained from the Chirpstack server and the data format is base64, 753 + 754 + 755 +=== Result === 756 + 757 +Connecting to the SN50v3-LB using the serial USB-TTL port can check that two SN50v3-LBs are receiving Downlink at the same time 758 + 759 +[[image:image-20240923151814-23.png||height="563" width="1255"]] 760 + 761 + 632 632 = 9. Multiply Uplink in ChirpStack = 633 633 634 634 ... ... @@ -992,11 +992,40 @@ 992 992 **Note: lorawan's protocol link——[[LoRaWAN® Regional Parameters v1.0.3revA (lora-alliance.org)>>url:https://resources.lora-alliance.org/document/lorawan-regional-parameters-v1-0-3reva]]** 993 993 994 994 1125 +== 13.3 ChirpStackv4 node device displays "UPLINK_F_CNT_RETRANSMISSION" == 995 995 996 996 997 - ==13.3Howtogetthelog information of thenode?==1128 +This is because the node's packets are retransmitted, and the Fcnt of these packets is the same. 998 998 1130 +The user can Disable frame-counter validation on the chirpstack node and this warning message will not appear in the logs. 999 999 1132 + 1133 +The packet is retransmitted because the node device has enabled the acknowledgment uplink packet mode and the node cannot receive the ACK acknowledgment packet delivered by the gateway. 1134 + 1135 + 1136 +**The possible reasons are: ** 1137 + 1138 +~1. The signal of the node device and the gateway is not good 1139 + 1140 +2. Too many node devices affect the downlink of the gateway 1141 + 1142 + 1143 +[[image:image-20240717085339-1.jpeg]] 1144 + 1145 + 1146 +* **Disable frame-counter validation** 1147 + 1148 +[[image:image-20240717102613-5.png||height="803" width="1211"]] 1149 + 1150 + 1151 +* **Result** 1152 + 1153 +[[image:image-20240717092428-4.jpeg]] 1154 + 1155 + 1156 +== 13.4 How to get the log information of the node? == 1157 + 1158 + 1000 1000 ~1. Get information about a single node. 1001 1001 1002 1002 * Download this file in the node's live data interface. ... ... @@ -1028,5 +1028,6 @@ 1028 1028 1029 1029 [[image:image-20240117175738-5.png]] 1030 1030 1031 -== == 1190 +(% class="wikigeneratedid" id="H" %) 1191 + 1032 1032 )))
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