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243	243	MQTT Connect to ChirpStack
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	245	+
245	245	(((
246	246	(% style="color:red" %)Note: Chirpstack use base64 to downlink, so need to convert the downlink payload from HEX to base64 [[https:~~/~~/base64.us/>>url:https://base64.us/]]
247	247	)))
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251	251	Choose to Use Hex for Encode
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253	253	If we want send downstream hex 030101 to end node, the BASE64 payload is AwEB
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255	255	[[image:image-20220525104025-15.png]]
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315	315	AwAA is 0x030000's base 64 Encode.
316	316	)))
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	320	+
318	318	== 4.3 Add the decode function in Chirpstack for the payload ==
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320	320	User enters the payload code according to the steps.
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328	328
329	329	[[image:image-20220526091801-6.png]]
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	334	+
331	331	= 5. Multiply Uplink in ChirpStack =
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333	333	(((
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357	357	[[image:image-20220525104437-22.png]]
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	363	+
359	359	Duplicate transmission in short time
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361	361	[[image:image-20220525104502-23.png]]
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	368	+
363	363	== 5.1 Solution ==
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365	365	This example uses the Windows version as a template, other versions can refer to this. Similiar reference: [[https:~~/~~/confluence.alitecs.de/plugins/servlet/mobile?contentId=79790102#content/view/79790102>>url:https://confluence.alitecs.de/plugins/servlet/mobile?contentId=79790102#content/view/79790102]]
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371	371	[[image:image-20220525104532-24.png]]
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	379	+
373	373	installation path:
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375	375	[[image:image-20220525104554-25.png]]
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	384	+
377	377	(((
378	378	2. Environment variable settings:.
379	379	)))