diff --git a/.cproject b/.cproject
deleted file mode 100644
index 29a515149..000000000
--- a/.cproject
+++ /dev/null
@@ -1,76 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<?fileVersion 4.0.0?><cproject storage_type_id="org.eclipse.cdt.core.XmlProjectDescriptionStorage">
-	<storageModule moduleId="org.eclipse.cdt.core.settings">
-		<cconfiguration id="nds.nds32le-elf-mculib-v3.base.58599081">
-			<storageModule buildSystemId="org.eclipse.cdt.managedbuilder.core.configurationDataProvider" id="nds.nds32le-elf-mculib-v3.base.58599081" moduleId="org.eclipse.cdt.core.settings" name="Default">
-				<externalSettings/>
-				<extensions>
-					<extension id="com.andestech.ide.cdt.managedbuilder.core.CROSS_GNU_ELF" point="org.eclipse.cdt.core.BinaryParser"/>
-					<extension id="org.eclipse.cdt.core.GmakeErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
-					<extension id="org.eclipse.cdt.core.CWDLocator" point="org.eclipse.cdt.core.ErrorParser"/>
-					<extension id="org.eclipse.cdt.core.GCCErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
-					<extension id="org.eclipse.cdt.core.GASErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
-					<extension id="org.eclipse.cdt.core.GLDErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
-				</extensions>
-			</storageModule>
-			<storageModule moduleId="cdtBuildSystem" version="4.0.0">
-				<configuration artifactName="${ProjName}" buildProperties="" description="" id="nds.nds32le-elf-mculib-v3.base.58599081" name="Default" parent="org.eclipse.cdt.build.core.emptycfg">
-					<folderInfo id="nds.nds32le-elf-mculib-v3.base.58599081.1110402366" name="/" resourcePath="">
-						<toolChain id="nds.nds32le-elf-mculib-v3.base.1767351733" name="nds32le-elf-mculib-v3" superClass="nds.nds32le-elf-mculib-v3.base">
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-							<option id="nds32le-elf-mculib-v3.managedbuild.option.toolchain.NDS32_LIB_CPP_DEFAULT.1439903022" name="LIB_CPP_DEFAULT" superClass="nds32le-elf-mculib-v3.managedbuild.option.toolchain.NDS32_LIB_CPP_DEFAULT"/>
-							<option id="nds32le-elf-mculib-v3.managedbuild.option.toolchain.RSE_TARGET.1444389132" name="RSE_TARGET" superClass="nds32le-elf-mculib-v3.managedbuild.option.toolchain.RSE_TARGET"/>
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-							<builder buildPath="${workspace_loc:/rtt_master/bsp/AE210P}" cleanBuildTarget="APP=rtthread AE210P=1 USING_CLI=1 DEBUG=1 clean" id="target.nds.builder.base.798580194" incrementalBuildTarget="APP=rtthread AE210P=1 USING_CLI=1 DEBUG=1 all" keepEnvironmentInBuildfile="false" managedBuildOn="false" name="Andes Make Builder" superClass="target.nds.builder.base"/>
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-							<tool id="tool.nds32le-elf-mculib-v3.c.compiler.base.1446774168" name="Andes C Compiler" superClass="tool.nds32le-elf-mculib-v3.c.compiler.base">
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-							<tool id="tool.nds32le-elf-mculib-v3.c.linker.base.84728931" name="Andes C Linker" superClass="tool.nds32le-elf-mculib-v3.c.linker.base">
-								<option defaultValue="true" id="nds32le-elf-mculib-v3.c.link.option.noshared.base.2119240931" name="No shared libraries (-static)" superClass="nds32le-elf-mculib-v3.c.link.option.noshared.base" valueType="boolean"/>
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-							<tool id="tool.nds32le-elf-mculib-v3.assembler.base.1651903076" name="Andes Assembler" superClass="tool.nds32le-elf-mculib-v3.assembler.base">
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-							<tool id="tool.nds32le-elf-mculib-v3.readelf.base.839251283" name="Readelf (ELF info listing)" superClass="tool.nds32le-elf-mculib-v3.readelf.base"/>
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-							<tool id="tool.nds32le-elf-mculib-v3.objcopy.base.511281711" name="Objcopy (object content copy)" superClass="tool.nds32le-elf-mculib-v3.objcopy.base"/>
-							<tool id="tool.nds32le-elf-mculib-v3.size.base.191568706" name="Size (section size listing)" superClass="tool.nds32le-elf-mculib-v3.size.base"/>
-							<tool id="tool.nds32le-elf-mculib-v3.ldsag.base.682055329" name="LdSaG Tool" superClass="tool.nds32le-elf-mculib-v3.ldsag.base"/>
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-				</configuration>
-			</storageModule>
-			<storageModule moduleId="org.eclipse.cdt.core.externalSettings"/>
-		</cconfiguration>
-	</storageModule>
-	<storageModule moduleId="cdtBuildSystem" version="4.0.0">
-		<project id="rtt_master.null.750251984" name="rtt_master"/>
-	</storageModule>
-	<storageModule moduleId="scannerConfiguration">
-		<autodiscovery enabled="true" problemReportingEnabled="true" selectedProfileId=""/>
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-	<storageModule moduleId="org.eclipse.cdt.core.LanguageSettingsProviders"/>
-	<storageModule moduleId="refreshScope" versionNumber="2">
-		<configuration configurationName="Default">
-			<resource resourceType="PROJECT" workspacePath="/rtt_master"/>
-		</configuration>
-	</storageModule>
-</cproject>