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1		-**~ Table of Contents:**
	1	+**~ Contents:**
2	2
3	3	{{toc/}}
4	4
	5	+= 1. Introduction =
5	5
6		-
7		-
8		-= 1.  Introduction =
9		-
10		-
11	11	Notes for using Dragino Devices with TTN Stack3.
12	12
13	13
	10	+= 2. Downlink =
14	14
15		-= 2.  Downlink =
16		-
17		-
18	18	Use MQTT API for downlink: Reference: [[TTN Stack v3 MQTT reference>>url:https://thethingsstack.io/v3.1.0/guides/getting-started/mqtt/]]
19	19
20	20	(((
21		-(% style="color:blue" %)**Download command is:**
	15	+**Download command is:**
22	22	)))
23	23
24	24	(% class="box" %)
...	...	@@ -27,25 +27,18 @@
27	27	)))
28	28
29	29	(((
30		-
31		-
32		-The MQTT command use (% style="color:blue" %)**-h,-p,-u,-P** (%%)options. We can find them in the website.
33		-
34		-
	24	+The MQTT command use (% style="color:#4f81bd" %)**-h,-p,-u,-P** (%%)options. We can find them in the website.
35	35	)))
36	36
37	37	[[image:image-20220526142338-3.png]]
38	38
39		-**find -h : broker address , -p port and -u: user name**
	29	+find -h : broker address , -p port and -u: user name
40	40
41		-
42		-
43	43	[[image:image-20220526142307-2.png]]
44	44
45		-**find -P : Password**
	33	+find -P : Password
46	46
47	47
48		-
49	49	User MQTT.FX to simulate a downlink
50	50
51	51	[[image:image-20220526142421-4.png]]
...	...	@@ -53,55 +53,42 @@
53	53	Use MQTT.FX to simulate downlink
54	54
55	55
56		-
57	57	Input connection info
58	58
59		-[[image:image-20220526142512-5.png]]
	45	+[[image:https://wiki.dragino.com/images/thumb/4/44/Stack_v3_downlink_4.png/600px-Stack_v3_downlink_4.png||height="437" width="600"]]
60	60
61	61	Input MQTT connection info
62	62
63	63
64		-
65	65	Send a downstream
66	66
67		-[[image:image-20220526142539-6.png]]
	52	+[[image:https://wiki.dragino.com/images/thumb/e/ec/Stack_v3_downlink_5.png/600px-Stack_v3_downlink_5.png||alt="Stack v3 downlink 5.png" height="438" width="600"]]
68	68
69	69	Gateway traffic for downstream
70	70
	56	+[[image:https://wiki.dragino.com/images/thumb/8/8a/Stack_v3_downlink_8.png/600px-Stack_v3_downlink_8.png||alt="Stack v3 downlink 8.png" height="235" width="600"]]
71	71
72	72
73		-[[image:image-20220526142616-7.png||height="579" width="1407"]]
74		-
75		-
76		-
77	77	Downstream data flow will like below:
78	78
79		-[[image:image-20220526142741-8.png]]
	61	+[[image:https://wiki.dragino.com/images/thumb/d/d1/Stack_v3_downlink_6.png/600px-Stack_v3_downlink_6.png||alt="Stack v3 downlink 6.png" height="233" width="600"]]
80	80
81		-[[image:image-20220526142826-9.png]]
	63	+[[image:https://wiki.dragino.com/images/1/1f/Stack_v3_downlink_7.png||alt="Stack v3 downlink 7.png" height="371" width="453"]]
82	82
	65	+= 3. Trouble Shooting =
83	83
	67	+== 3.1 Problem when register a device to TTNv3 if it is already register to TTNv2 ==
84	84
85		-= 3.  Trouble Shooting =
86		-
87		-== 3.1  Problem when register a device to TTNv3 if it is already register to TTNv2 ==
88		-
89		-
90	90	When you register the device in V2 and V3 with the same key and EUI, the device can only connect to V2.
91	91
	71	+[[image:https://wiki.dragino.com/images/thumb/0/0d/V3v2.png/600px-V3v2.png||alt="V3v2.png" height="403" width="600"]]
92	92
93		-[[image:image-20220526142914-10.png]]
	73	+[[image:https://wiki.dragino.com/images/thumb/b/b9/V2v3.png/600px-V2v3.png||alt="V2v3.png" height="352" width="600"]]
94	94
95		-[[image:image-20220526143018-11.png||height="619" width="1049"]]
96		-
97		-
98	98	If you want the device to connect to V3. You must change your key and EUI, or delete the device registered on V2.
99	99
	77	+== 3.2 MIC Mismatch or MIC Failed ==
100	100
101		-
102		-== 3.2  MIC Mismatch or MIC Failed ==
103		-
104		-
105	105	(((
106	106	(((
107	107	When the device is registered or the device is working normally, the problem of MIC mismatch and MIC failed occurs.
...	...	@@ -111,11 +111,9 @@
111	111	(((
112	112	(((
113	113	Under normal circumstances, users need to change the APPKEY to solve this problem.
114		-
115		-
116	116	)))
117	117	)))
118	118
119		-[[image:image-20220526143057-12.png]]
	91	+[[image:https://wiki.dragino.com/images/thumb/d/dd/MIC_mismatch.png/600px-MIC_mismatch.png||height="208" width="600"]]
120	120
121	121	MIC Mismatch

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