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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
14		-= 2.  Downlink =
	10	+= 2. Downlink =
15	15
16		-
17	17	Use MQTT API for downlink: Reference: [[TTN Stack v3 MQTT reference>>url:https://thethingsstack.io/v3.1.0/guides/getting-started/mqtt/]]
18	18
19	19	(((
20		-(% style="color:blue" %)**Download command is:**
	15	+**Download command is:**
21	21	)))
22	22
23	23	(% class="box" %)
...	...	@@ -26,25 +26,18 @@
26	26	)))
27	27
28	28	(((
29		-
30		-
31		-The MQTT command use (% style="color:blue" %)**-h,-p,-u,-P** (%%)options. We can find them in the website.
32		-
33		-
	24	+The MQTT command use (% style="color:#4f81bd" %)**-h,-p,-u,-P** (%%)options. We can find them in the website.
34	34	)))
35	35
36	36	[[image:image-20220526142338-3.png]]
37	37
38		-**find -h : broker address , -p port and -u: user name**
	29	+find -h : broker address , -p port and -u: user name
39	39
40		-
41		-
42	42	[[image:image-20220526142307-2.png]]
43	43
44		-**find -P : Password**
	33	+find -P : Password
45	45
46	46
47		-
48	48	User MQTT.FX to simulate a downlink
49	49
50	50	[[image:image-20220526142421-4.png]]
...	...	@@ -52,53 +52,42 @@
52	52	Use MQTT.FX to simulate downlink
53	53
54	54
55		-
56	56	Input connection info
57	57
58		-[[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"]]
59	59
60	60	Input MQTT connection info
61	61
62	62
63		-
64	64	Send a downstream
65	65
66		-[[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"]]
67	67
68	68	Gateway traffic for downstream
69	69
	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"]]
70	70
71	71
72		-[[image:image-20220526142616-7.png||height="579" width="1407"]]
73		-
74		-
75		-
76	76	Downstream data flow will like below:
77	77
78		-[[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"]]
79	79
80		-[[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"]]
81	81
	65	+= 3. Trouble Shooting =
82	82
83		-= 3.  Trouble Shooting =
	67	+== 3.1 Problem when register a device to TTNv3 if it is already register to TTNv2 ==
84	84
85		-== 3.1  Problem when register a device to TTNv3 if it is already register to TTNv2 ==
86		-
87		-
88	88	When you register the device in V2 and V3 with the same key and EUI, the device can only connect to V2.
89	89
	71	+[[image:https://wiki.dragino.com/images/thumb/0/0d/V3v2.png/600px-V3v2.png||alt="V3v2.png" height="403" width="600"]]
90	90
91		-[[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"]]
92	92
93		-[[image:image-20220526143018-11.png||height="619" width="1049"]]
94		-
95		-
96	96	If you want the device to connect to V3. You must change your key and EUI, or delete the device registered on V2.
97	97
	77	+== 3.2 MIC Mismatch or MIC Failed ==
98	98
99		-== 3.2  MIC Mismatch or MIC Failed ==
100		-
101		-
102	102	(((
103	103	(((
104	104	When the device is registered or the device is working normally, the problem of MIC mismatch and MIC failed occurs.
...	...	@@ -108,11 +108,9 @@
108	108	(((
109	109	(((
110	110	Under normal circumstances, users need to change the APPKEY to solve this problem.
111		-
112		-
113	113	)))
114	114	)))
115	115
116		-[[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"]]
117	117
118	118	MIC Mismatch

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