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170	170
171	171	[[image:image-20220524164514-14.png]]
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	173	+
173	173	and recode the station log in the system/Recode log page.
174	174
175	175	[[image:image-20220524164541-15.png]]
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183	183
184	184	Convert the data to Base64
185	185
	187	+
186	186	[[image:image-20220526090748-4.png]]
187	187
188	188	Check ChripStack downlink DataRate
189	189
	192	+
190	190	[[image:image-20220525101326-11.png]]
191	191
192	192	Make sure the RX2DR is the same in the end node
193	193
	197	+
194	194	== 4.2 Loraserver Downlink Note ==
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196	196	User can use MQTT to send downlink payload to ChirpStack to perform downstream to LoRaWAN End
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211	211
212	212	(((
213	213	MQTT Connect to ChirpStack
	218	+
	219	+
214	214	)))
215	215
216	216	(((
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236	236
237	237	MQTT Connect to ChirpStack
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	245	+
239	239	(((
240	240	(% 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/]]
241	241	)))
...	...	@@ -244,6 +244,7 @@
244	244
245	245	Choose to Use Hex for Encode
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	254	+
247	247	If we want send downstream hex 030101 to end node, the BASE64 payload is AwEB
248	248
249	249	[[image:image-20220525104025-15.png]]
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309	309	AwAA is 0x030000's base 64 Encode.
310	310	)))
311	311
	320	+
312	312	== 4.3 Add the decode function in Chirpstack for the payload ==
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314	314	User enters the payload code according to the steps.
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322	322
323	323	[[image:image-20220526091801-6.png]]
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	334	+
325	325	= 5. Multiply Uplink in ChirpStack =
326	326
327	327	(((
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350	350
351	351	[[image:image-20220525104437-22.png]]
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	363	+
353	353	Duplicate transmission in short time
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355	355	[[image:image-20220525104502-23.png]]
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	368	+
357	357	== 5.1 Solution ==
358	358
359	359	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]]