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1		-**~ Contents:**
	1	+**~ Table of Contents:**
2	2
3	3	{{toc/}}
4	4
5		-= 1. Introduction =
6	6
	6	+
	7	+
	8	+= 1.  Introduction =
	9	+
	10	+
7	7	Notes for using Dragino Devices with TTN Stack3.
8	8
9	9
10		-= 2. Downlink =
	14	+= 2.  Downlink =
11	11
	16	+
12	12	Use MQTT API for downlink: Reference: [[TTN Stack v3 MQTT reference>>url:https://thethingsstack.io/v3.1.0/guides/getting-started/mqtt/]]
13	13
14	14	(((
15		-**Download command is:**
	20	+(% style="color:blue" %)**Download command is:**
16	16	)))
17	17
18	18	(% class="box" %)
...	...	@@ -21,18 +21,25 @@
21	21	)))
22	22
23	23	(((
24		-The MQTT command use (% style="color:#4f81bd" %)**-h,-p,-u,-P** (%%)options. We can find them in the website.
	29	+
	30	+
	31	+The MQTT command use (% style="color:blue" %)**-h,-p,-u,-P** (%%)options. We can find them in the website.
	32	+
	33	+
25	25	)))
26	26
27	27	[[image:image-20220526142338-3.png]]
28	28
29		-find -h : broker address , -p port and -u: user name
	38	+**find -h : broker address , -p port and -u: user name**
30	30
	40	+
	41	+
31	31	[[image:image-20220526142307-2.png]]
32	32
33		-find -P : Password
	44	+**find -P : Password**
34	34
35	35
	47	+
36	36	User MQTT.FX to simulate a downlink
37	37
38	38	[[image:image-20220526142421-4.png]]
...	...	@@ -40,6 +40,7 @@
40	40	Use MQTT.FX to simulate downlink
41	41
42	42
	55	+
43	43	Input connection info
44	44
45	45	[[image:image-20220526142512-5.png]]
...	...	@@ -47,6 +47,7 @@
47	47	Input MQTT connection info
48	48
49	49
	63	+
50	50	Send a downstream
51	51
52	52	[[image:image-20220526142539-6.png]]
...	...	@@ -53,9 +53,12 @@
53	53
54	54	Gateway traffic for downstream
55	55
	70	+
	71	+
56	56	[[image:image-20220526142616-7.png||height="579" width="1407"]]
57	57
58	58
	75	+
59	59	Downstream data flow will like below:
60	60
61	61	[[image:image-20220526142741-8.png]]
...	...	@@ -63,20 +63,25 @@
63	63	[[image:image-20220526142826-9.png]]
64	64
65	65
66		-= 3. Trouble Shooting =
	83	+= 3.  Trouble Shooting =
67	67
68		-== 3.1 Problem when register a device to TTNv3 if it is already register to TTNv2 ==
	85	+== 3.1  Problem when register a device to TTNv3 if it is already register to TTNv2 ==
69	69
	87	+
70	70	When you register the device in V2 and V3 with the same key and EUI, the device can only connect to V2.
71	71
72		-[[image:https://wiki.dragino.com/images/thumb/0/0d/V3v2.png/600px-V3v2.png||alt="V3v2.png" height="403" width="600"]]
73	73
74		-[[image:https://wiki.dragino.com/images/thumb/b/b9/V2v3.png/600px-V2v3.png||alt="V2v3.png" height="352" width="600"]]
	91	+[[image:image-20220526142914-10.png]]
75	75
	93	+[[image:image-20220526143018-11.png||height="619" width="1049"]]
	94	+
	95	+
76	76	If you want the device to connect to V3. You must change your key and EUI, or delete the device registered on V2.
77	77
78		-== 3.2 MIC Mismatch or MIC Failed ==
79	79
	99	+== 3.2  MIC Mismatch or MIC Failed ==
	100	+
	101	+
80	80	(((
81	81	(((
82	82	When the device is registered or the device is working normally, the problem of MIC mismatch and MIC failed occurs.
...	...	@@ -86,9 +86,11 @@
86	86	(((
87	87	(((
88	88	Under normal circumstances, users need to change the APPKEY to solve this problem.
	111	+
	112	+
89	89	)))
90	90	)))
91	91
92		-[[image:https://wiki.dragino.com/images/thumb/d/dd/MIC_mismatch.png/600px-MIC_mismatch.png||height="208" width="600"]]
	116	+[[image:image-20220526143057-12.png]]
93	93
94	94	MIC Mismatch

image-20220526143057-12.png

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	1	+XWiki.Xiaoling

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