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...	...	@@ -135,6 +135,7 @@
135	135	rebuild project
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	138	+
138	138	Note: If you don’t add the Device, then Keil will report this error:
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140	140	[[image:image-20220526181543-14.png]]
...	...	@@ -169,6 +169,7 @@
169	169	Support Frequency
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	173	+
172	172	If you want to change frequency, modify the Preprocessor Symbols. For example, change EU868 to US915 to complie a US915 firmware.
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174	174	[[image:image-20220526181651-17.png]]