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...	...	@@ -1,4 +1,4 @@
1		-**~ Contents:**
	1	+**~ Table of Contents:**
2	2
3	3	{{toc/}}
4	4
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5	5
6	6
7	7
8		-= 1. Introduction =
	8	+= 1.  Introduction =
9	9
	10	+
10	10	Notes for using Dragino Devices with TTN Stack3.
11	11
12	12
13		-= 2. Downlink =
	14	+= 2.  Downlink =
14	14
	16	+
15	15	Use MQTT API for downlink: Reference: [[TTN Stack v3 MQTT reference>>url:https://thethingsstack.io/v3.1.0/guides/getting-started/mqtt/]]
16	16
17	17	(((
18		-**Download command is:**
	20	+(% style="color:blue" %)**Download command is:**
19	19	)))
20	20
21	21	(% class="box" %)
...	...	@@ -24,19 +24,25 @@
24	24	)))
25	25
26	26	(((
27		-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	+
28	28	)))
29	29
30	30	[[image:image-20220526142338-3.png]]
31	31
32		-find -h : broker address , -p port and -u: user name
	38	+**find -h : broker address , -p port and -u: user name**
33	33
34	34
	41	+
35	35	[[image:image-20220526142307-2.png]]
36	36
37		-find -P : Password
	44	+**find -P : Password**
38	38
39	39
	47	+
40	40	User MQTT.FX to simulate a downlink
41	41
42	42	[[image:image-20220526142421-4.png]]
...	...	@@ -44,6 +44,7 @@
44	44	Use MQTT.FX to simulate downlink
45	45
46	46
	55	+
47	47	Input connection info
48	48
49	49	[[image:image-20220526142512-5.png]]
...	...	@@ -51,6 +51,7 @@
51	51	Input MQTT connection info
52	52
53	53
	63	+
54	54	Send a downstream
55	55
56	56	[[image:image-20220526142539-6.png]]
...	...	@@ -58,9 +58,11 @@
58	58	Gateway traffic for downstream
59	59
60	60
	71	+
61	61	[[image:image-20220526142616-7.png||height="579" width="1407"]]
62	62
63	63
	75	+
64	64	Downstream data flow will like below:
65	65
66	66	[[image:image-20220526142741-8.png]]
...	...	@@ -68,21 +68,25 @@
68	68	[[image:image-20220526142826-9.png]]
69	69
70	70
71		-= 3. Trouble Shooting =
	83	+= 3.  Trouble Shooting =
72	72
73		-== 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 ==
74	74
	87	+
75	75	When you register the device in V2 and V3 with the same key and EUI, the device can only connect to V2.
76	76
	90	+
77	77	[[image:image-20220526142914-10.png]]
78	78
79	79	[[image:image-20220526143018-11.png||height="619" width="1049"]]
80	80
	95	+
81	81	If you want the device to connect to V3. You must change your key and EUI, or delete the device registered on V2.
82	82
83	83
84		-== 3.2 MIC Mismatch or MIC Failed ==
	99	+== 3.2  MIC Mismatch or MIC Failed ==
85	85
	101	+
86	86	(((
87	87	(((
88	88	When the device is registered or the device is working normally, the problem of MIC mismatch and MIC failed occurs.
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92	92	(((
93	93	(((
94	94	Under normal circumstances, users need to change the APPKEY to solve this problem.
	111	+
	112	+
95	95	)))
96	96	)))
97	97