From 51cea28e9d8572748f2280cb173034305f09649a Mon Sep 17 00:00:00 2001
From: XIVN1987 <XIVN1987@163.com>
Date: Sat, 3 Jun 2023 19:43:23 +0800
Subject: [PATCH] make code simple

---
 CH32V305/.cproject         | 17 +++++---
 CH32V305/.project          | 79 ++++++++++++++++++----------------
 CH32V305/.template         | 19 ++++----
 CH32V305/DAPLink.launch    | 62 +++++++++++++++++++++++++++
 CH32V305/DAPLink.wvproj    |  4 +-
 CH32V305/{src => }/link.ld |  2 +-
 CH32V305/src/vcom_serial.c | 88 ++++++++++++++------------------------
 7 files changed, 156 insertions(+), 115 deletions(-)
 create mode 100644 CH32V305/DAPLink.launch
 rename CH32V305/{src => }/link.ld (97%)

diff --git a/CH32V305/.cproject b/CH32V305/.cproject
index 15edf7d..7dd1779 100644
--- a/CH32V305/.cproject
+++ b/CH32V305/.cproject
@@ -20,7 +20,7 @@
 							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.addtools.createflash.1311852988" name="Create flash image" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.addtools.createflash" useByScannerDiscovery="false" value="true" valueType="boolean"/>
 							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.addtools.createlisting.1983282875" name="Create extended listing" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.addtools.createlisting" useByScannerDiscovery="false" value="true" valueType="boolean"/>
 							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.addtools.printsize.1000761142" name="Print size" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.addtools.printsize" useByScannerDiscovery="false" value="true" valueType="boolean"/>
-							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.optimization.level.514997414" name="Optimization Level" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.optimization.level" useByScannerDiscovery="true" value="ilg.gnumcueclipse.managedbuild.cross.riscv.option.optimization.level.none" valueType="enumerated"/>
+							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.optimization.level.514997414" name="Optimization Level" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.optimization.level" useByScannerDiscovery="true" value="ilg.gnumcueclipse.managedbuild.cross.riscv.option.optimization.level.optimize" valueType="enumerated"/>
 							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.optimization.messagelength.1008570639" name="Message length (-fmessage-length=0)" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.optimization.messagelength" useByScannerDiscovery="true" value="true" valueType="boolean"/>
 							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.optimization.signedchar.467272439" name="'char' is signed (-fsigned-char)" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.optimization.signedchar" useByScannerDiscovery="true" value="true" valueType="boolean"/>
 							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.optimization.functionsections.2047756949" name="Function sections (-ffunction-sections)" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.optimization.functionsections" useByScannerDiscovery="true" value="true" valueType="boolean"/>
@@ -45,11 +45,11 @@
 							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.target.isa.atomic.1590833110" name="Atomic extension (RVA)" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.target.isa.atomic" useByScannerDiscovery="false" value="true" valueType="boolean"/>
 							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.warnings.unused.1961191588" name="Warn on various unused elements (-Wunused)" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.warnings.unused" useByScannerDiscovery="true" value="false" valueType="boolean"/>
 							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.warnings.uninitialized.929829166" name="Warn on uninitialized variables (-Wuninitialized)" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.warnings.uninitialized" useByScannerDiscovery="true" value="true" valueType="boolean"/>
-							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.optimization.nocommon.796093764" name="No common unitialized (-fno-common)" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.optimization.nocommon" value="true" valueType="boolean"/>
-							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.target.isa.xw.87670352" name="Extra Compressed extension (RVXW)" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.target.isa.xw" value="true" valueType="boolean"/>
-							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.target.saverestore.1339788259" name="Small prologue/epilogue (-msave-restore)" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.target.saverestore" value="true" valueType="boolean"/>
+							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.target.isa.xw.264175729" name="Extra Compressed extension (RVXW)" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.target.isa.xw" value="true" valueType="boolean"/>
+							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.target.saverestore.1015055835" name="Small prologue/epilogue (-msave-restore)" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.target.saverestore" value="true" valueType="boolean"/>
+							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.optimization.nocommon.1455578904" name="No common unitialized (-fno-common)" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.optimization.nocommon" value="true" valueType="boolean"/>
 							<targetPlatform archList="all" binaryParser="org.eclipse.cdt.core.ELF" id="ilg.gnumcueclipse.managedbuild.cross.riscv.targetPlatform.1944008784" isAbstract="false" osList="all" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.targetPlatform"/>
-							<builder buildPath="${workspace_loc:/ADC_DMA}/obj" id="ilg.gnumcueclipse.managedbuild.cross.riscv.builder.1421508906" keepEnvironmentInBuildfile="false" managedBuildOn="true" name="Gnu Make Builder" parallelBuildOn="true" parallelizationNumber="optimal" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.builder"/>
+							<builder buildPath="${workspace_loc:/${ProjName}}/obj" id="ilg.gnumcueclipse.managedbuild.cross.riscv.builder.1421508906" keepEnvironmentInBuildfile="false" managedBuildOn="true" name="Gnu Make Builder" parallelBuildOn="true" parallelizationNumber="optimal" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.builder"/>
 							<tool id="ilg.gnumcueclipse.managedbuild.cross.riscv.tool.assembler.1244756189" name="GNU RISC-V Cross Assembler" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.tool.assembler">
 								<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.assembler.usepreprocessor.1692176068" name="Use preprocessor" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.assembler.usepreprocessor" useByScannerDiscovery="false" value="true" valueType="boolean"/>
 								<option IS_BUILTIN_EMPTY="false" IS_VALUE_EMPTY="true" id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.assembler.include.paths.1034038285" name="Include paths (-I)" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.assembler.include.paths" useByScannerDiscovery="true" valueType="includePath"/>
@@ -75,13 +75,16 @@
 								<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.c.linker.gcsections.194760422" name="Remove unused sections (-Xlinker --gc-sections)" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.c.linker.gcsections" useByScannerDiscovery="false" value="true" valueType="boolean"/>
 								<option IS_BUILTIN_EMPTY="false" IS_VALUE_EMPTY="true" id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.c.linker.paths.2057340378" name="Library search path (-L)" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.c.linker.paths" useByScannerDiscovery="false" valueType="libPaths"/>
 								<option IS_BUILTIN_EMPTY="false" IS_VALUE_EMPTY="false" id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.c.linker.scriptfile.1390103472" name="Script files (-T)" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.c.linker.scriptfile" useByScannerDiscovery="false" valueType="stringList">
-									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/src/link.ld}&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/link.ld}&quot;"/>
 								</option>
 								<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.c.linker.nostart.913830613" name="Do not use standard start files (-nostartfiles)" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.c.linker.nostart" useByScannerDiscovery="false" value="true" valueType="boolean"/>
 								<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.c.linker.usenewlibnano.239404511" name="Use newlib-nano (--specs=nano.specs)" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.c.linker.usenewlibnano" useByScannerDiscovery="false" value="true" valueType="boolean"/>
 								<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.c.linker.usenewlibnosys.351964161" name="Do not use syscalls (--specs=nosys.specs)" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.c.linker.usenewlibnosys" useByScannerDiscovery="false" value="true" valueType="boolean"/>
 								<option IS_BUILTIN_EMPTY="false" IS_VALUE_EMPTY="true" id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.c.linker.otherobjs.16994550" name="Other objects" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.c.linker.otherobjs" useByScannerDiscovery="false" valueType="userObjs"/>
 								<option IS_BUILTIN_EMPTY="false" IS_VALUE_EMPTY="true" id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.c.linker.flags.1125808200" name="Linker flags (-Xlinker [option])" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.c.linker.flags" useByScannerDiscovery="false" valueType="stringList"/>
+								<option IS_BUILTIN_EMPTY="false" IS_VALUE_EMPTY="false" id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.c.linker.libs.1534041660" name="Libraries (-l)" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.c.linker.libs" useByScannerDiscovery="false" valueType="libs">
+									<listOptionValue builtIn="false" value="m"/>
+								</option>
 								<inputType id="ilg.gnumcueclipse.managedbuild.cross.riscv.tool.c.linker.input.1859223768" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.tool.c.linker.input">
 									<additionalInput kind="additionalinputdependency" paths="$(USER_OBJS)"/>
 									<additionalInput kind="additionalinput" paths="$(LIBS)"/>
@@ -114,7 +117,7 @@
 						</toolChain>
 					</folderInfo>
 					<sourceEntries>
-						<entry excluding="core|Ld|Core|src/Startup/startup_ch32v30x_D8.S|Peripheral|Debug|Startup" flags="VALUE_WORKSPACE_PATH|RESOLVED" kind="sourcePath" name=""/>
+						<entry excluding="src/Startup/startup_ch32v30x_D8.S|core|Startup|Peripheral|Ld|Debug|Core" flags="VALUE_WORKSPACE_PATH|RESOLVED" kind="sourcePath" name=""/>
 						<entry flags="VALUE_WORKSPACE_PATH|RESOLVED" kind="sourcePath" name="core"/>
 					</sourceEntries>
 				</configuration>
diff --git a/CH32V305/.project b/CH32V305/.project
index 54ad0f9..9e7b031 100644
--- a/CH32V305/.project
+++ b/CH32V305/.project
@@ -1,41 +1,44 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 <projectDescription>
-  <name>DAPLink</name>
-  <comment/>
-  <projects/>
-  <buildSpec>
-    <buildCommand>
-      <name>org.eclipse.cdt.managedbuilder.core.genmakebuilder</name>
-      <triggers>clean,full,incremental,</triggers>
-      <arguments/>
-    </buildCommand>
-    <buildCommand>
-      <name>org.eclipse.cdt.managedbuilder.core.ScannerConfigBuilder</name>
-      <triggers>full,incremental,</triggers>
-      <arguments/>
-    </buildCommand>
-  </buildSpec>
-  <natures>
-    <nature>org.eclipse.cdt.core.cnature</nature>
-    <nature>org.eclipse.cdt.managedbuilder.core.managedBuildNature</nature>
-    <nature>org.eclipse.cdt.managedbuilder.core.ScannerConfigNature</nature>
-  </natures>
-  <filteredResources>
-    <filter>
-      <id>1595986042669</id>
-      <name/>
-      <type>22</type>
-      <matcher>
-        <id>org.eclipse.ui.ide.multiFilter</id>
-        <arguments>1.0-name-matches-false-false-*.wvproj</arguments>
-      </matcher>
-    </filter>
-  </filteredResources>
-  <linkedResources>
-    <link>
-      <name>core</name>
-      <type>2</type>
-      <location>PARENT-1-PROJECT_LOC/core</location>
-    </link>
-  </linkedResources>
+	<name>DAPLink</name>
+	<comment/>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.cdt.managedbuilder.core.genmakebuilder</name>
+			<triggers>clean,full,incremental,</triggers>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.cdt.managedbuilder.core.ScannerConfigBuilder</name>
+			<triggers>full,incremental,</triggers>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.cdt.core.cnature</nature>
+		<nature>org.eclipse.cdt.managedbuilder.core.managedBuildNature</nature>
+		<nature>org.eclipse.cdt.managedbuilder.core.ScannerConfigNature</nature>
+	</natures>
+	<linkedResources>
+		<link>
+			<name>core</name>
+			<type>2</type>
+			<locationURI>PARENT-1-PROJECT_LOC/core</locationURI>
+		</link>
+	</linkedResources>
+	<filteredResources>
+		<filter>
+			<id>1685539991138</id>
+			<name/>
+			<type>22</type>
+			<matcher>
+				<id>org.eclipse.ui.ide.multiFilter</id>
+				<arguments>1.0-name-matches-false-false-*.wvproj</arguments>
+			</matcher>
+		</filter>
+	</filteredResources>
 </projectDescription>
diff --git a/CH32V305/.template b/CH32V305/.template
index f6b89b7..1faa1f6 100644
--- a/CH32V305/.template
+++ b/CH32V305/.template
@@ -1,18 +1,17 @@
+Target Path=obj\DAPLink.hex
 Address=0x08000000
-Erase All=true
+Erase All=false
 Program=true
 Verify=true
 Reset=true
-
 Toolchain=RISC-V
-Series=CH32V307
-Description=ROM(byte): 256K, SRAM(byte): 64K, CHIP PINS: 64, GPIO PORTS: 51.\nWCH CH32V3 series of mainstream MCUs covers the needs of a large variety of applications in the industrial,medical and consumer markets. High performance with first-class peripherals and low-power,low-voltage operation is paired with a high level of integration at accessible prices with a simple architecture and easy-to-use tools.
-
-PeripheralVersion=1.4
-Target Path=obj/DAPLink.hex
-
+Series=CH32V305
+RTOS=NoneOS
+Description=Website: http://www.wch.cn/products/CH32V307.html?\nROM(byte): 128K, SRAM(byte): 32K, CHIP PINS: 64, GPIO PORTS: 51.\nWCH CH32V3 series of mainstream MCUs covers the needs of a large variety of applications in the industrial,medical and consumer markets. High performance with first-class peripherals and low-power,low-voltage operation is paired with a high level of integration at accessible prices with a simple architecture and easy-to-use tools.
+PeripheralVersion=2.0
+CLKSpeed=0
 
 Vendor=WCH
-MCU=CH32V307RCT6
+MCU=CH32V305FBP6
 Mcu Type=CH32V30x
-Link=WCH-Link
+Link=WCH-Link
\ No newline at end of file
diff --git a/CH32V305/DAPLink.launch b/CH32V305/DAPLink.launch
new file mode 100644
index 0000000..be4b2e6
--- /dev/null
+++ b/CH32V305/DAPLink.launch
@@ -0,0 +1,62 @@
+<?xml version="1.0" encoding="UTF-8" ?> 
+<launchConfiguration type="com.mounriver.debug.gdbjtag.openocd.launchConfigurationType">
+  <stringAttribute key="com.mounriver.debug.gdbjtag.openocd.PERIPHERALS" value="&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot; standalone=&quot;no&quot;?&gt;&#xD;&#xA;&lt;peripherals&gt;&#xD;&#xA;&lt;peripheral name=&quot;DMA1&quot;/&gt;&#xD;&#xA;&lt;/peripherals&gt;&#xD;&#xA;" />
+  <booleanAttribute key="com.mounriver.debug.gdbjtag.openocd.doContinue" value="true" />
+  <booleanAttribute key="com.mounriver.debug.gdbjtag.openocd.doDebugInRam" value="false" />
+  <booleanAttribute key="com.mounriver.debug.gdbjtag.openocd.doFirstReset" value="true" />
+  <booleanAttribute key="com.mounriver.debug.gdbjtag.openocd.doGdbServerAllocateConsole" value="true" />
+  <booleanAttribute key="com.mounriver.debug.gdbjtag.openocd.doGdbServerAllocateTelnetConsole" value="false" />
+  <booleanAttribute key="com.mounriver.debug.gdbjtag.openocd.doSecondReset" value="true" />
+  <booleanAttribute key="com.mounriver.debug.gdbjtag.openocd.doStartGdbCLient" value="true" />
+  <booleanAttribute key="com.mounriver.debug.gdbjtag.openocd.doStartGdbServer" value="true" />
+  <booleanAttribute key="com.mounriver.debug.gdbjtag.openocd.enableSemihosting" value="false" />
+  <stringAttribute key="com.mounriver.debug.gdbjtag.openocd.firstResetType" value="init" />
+  <stringAttribute key="com.mounriver.debug.gdbjtag.openocd.gdbClientOtherCommands" value="set mem inaccessible-by-default off&#xD;&#xA;set architecture riscv:rv32&#xD;&#xA;set remotetimeout unlimited" />
+  <stringAttribute key="com.mounriver.debug.gdbjtag.openocd.gdbClientOtherOptions" value="" />
+  <stringAttribute key="com.mounriver.debug.gdbjtag.openocd.gdbServerConnectionAddress" value="" />
+  <stringAttribute key="com.mounriver.debug.gdbjtag.openocd.gdbServerExecutable" value="${eclipse_home}toolchain/OpenOCD/bin/openocd.exe" />
+  <intAttribute key="com.mounriver.debug.gdbjtag.openocd.gdbServerGdbPortNumber" value="3333" />
+  <stringAttribute key="com.mounriver.debug.gdbjtag.openocd.gdbServerLog" value="" />
+  <stringAttribute key="com.mounriver.debug.gdbjtag.openocd.gdbServerOther" value="-f &quot;${eclipse_home}toolchain/OpenOCD/bin/wch-riscv.cfg&quot;" />
+  <stringAttribute key="com.mounriver.debug.gdbjtag.openocd.gdbServerTclPortNumber" value="6666" />
+  <intAttribute key="com.mounriver.debug.gdbjtag.openocd.gdbServerTelnetPortNumber" value="4444" />
+  <stringAttribute key="com.mounriver.debug.gdbjtag.openocd.otherInitCommands" value="" />
+  <stringAttribute key="com.mounriver.debug.gdbjtag.openocd.otherRunCommands" value="" />
+  <stringAttribute key="com.mounriver.debug.gdbjtag.openocd.secondResetType" value="halt" />
+  <stringAttribute key="com.mounriver.debug.gdbjtag.svdPath" value="${eclipse_home}template/wizard/WCH/RISC-V/CH32V305/NoneOS/CH32V305xx.svd" />
+  <stringAttribute key="org.eclipse.cdt.debug.gdbjtag.core.imageFileName" value="" />
+  <stringAttribute key="org.eclipse.cdt.debug.gdbjtag.core.imageOffset" value="" />
+  <stringAttribute key="org.eclipse.cdt.debug.gdbjtag.core.ipAddress" value="localhost" />
+  <stringAttribute key="org.eclipse.cdt.debug.gdbjtag.core.jtagDevice" value="GNU MCU OpenOCD" />
+  <booleanAttribute key="org.eclipse.cdt.debug.gdbjtag.core.loadImage" value="true" />
+  <booleanAttribute key="org.eclipse.cdt.debug.gdbjtag.core.loadSymbols" value="true" />
+  <stringAttribute key="org.eclipse.cdt.debug.gdbjtag.core.pcRegister" value="" />
+  <intAttribute key="org.eclipse.cdt.debug.gdbjtag.core.portNumber" value="3333" />
+  <booleanAttribute key="org.eclipse.cdt.debug.gdbjtag.core.setPcRegister" value="false" />
+  <booleanAttribute key="org.eclipse.cdt.debug.gdbjtag.core.setResume" value="false" />
+  <booleanAttribute key="org.eclipse.cdt.debug.gdbjtag.core.setStopAt" value="true" />
+  <stringAttribute key="org.eclipse.cdt.debug.gdbjtag.core.stopAt" value="handle_reset" />
+  <stringAttribute key="org.eclipse.cdt.debug.gdbjtag.core.symbolsFileName" value="" />
+  <stringAttribute key="org.eclipse.cdt.debug.gdbjtag.core.symbolsOffset" value="" />
+  <booleanAttribute key="org.eclipse.cdt.debug.gdbjtag.core.useFileForImage" value="false" />
+  <booleanAttribute key="org.eclipse.cdt.debug.gdbjtag.core.useFileForSymbols" value="false" />
+  <booleanAttribute key="org.eclipse.cdt.debug.gdbjtag.core.useProjBinaryForImage" value="true" />
+  <booleanAttribute key="org.eclipse.cdt.debug.gdbjtag.core.useProjBinaryForSymbols" value="true" />
+  <booleanAttribute key="org.eclipse.cdt.debug.gdbjtag.core.useRemoteTarget" value="true" />
+  <stringAttribute key="org.eclipse.cdt.dsf.gdb.DEBUG_NAME" value="${eclipse_home}toolchain/RISC-V Embedded GCC/bin/riscv-none-embed-gdb.exe" />
+  <booleanAttribute key="org.eclipse.cdt.dsf.gdb.UPDATE_THREADLIST_ON_SUSPEND" value="false" />
+  <intAttribute key="org.eclipse.cdt.launch.ATTR_BUILD_BEFORE_LAUNCH_ATTR" value="2" />
+  <stringAttribute key="org.eclipse.cdt.launch.COREFILE_PATH" value="" />
+  <stringAttribute key="org.eclipse.cdt.launch.PROGRAM_NAME" value="obj\DAPLink.elf" />
+  <stringAttribute key="org.eclipse.cdt.launch.PROJECT_ATTR" value="DAPLink" />
+  <booleanAttribute key="org.eclipse.cdt.launch.PROJECT_BUILD_CONFIG_AUTO_ATTR" value="true" />
+  <stringAttribute key="org.eclipse.cdt.launch.PROJECT_BUILD_CONFIG_ID_ATTR" value="" />
+  <listAttribute key="org.eclipse.debug.core.MAPPED_RESOURCE_PATHS">
+    <listEntry value="/DAPLink" />
+  </listAttribute>
+  <listAttribute key="org.eclipse.debug.core.MAPPED_RESOURCE_TYPES">
+    <listEntry value="4" />
+  </listAttribute>
+  <stringAttribute key="org.eclipse.dsf.launch.MEMORY_BLOCKS" value="&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot; standalone=&quot;no&quot;?&gt;&#xD;&#xA;&lt;memoryBlockExpressionList context=&quot;Context string&quot;/&gt;&#xD;&#xA;" />
+  <stringAttribute key="process_factory_id" value="org.eclipse.cdt.dsf.gdb.GdbProcessFactory" />
+</launchConfiguration>
diff --git a/CH32V305/DAPLink.wvproj b/CH32V305/DAPLink.wvproj
index 2cd99d9..84e0723 100644
--- a/CH32V305/DAPLink.wvproj
+++ b/CH32V305/DAPLink.wvproj
@@ -1,2 +1,2 @@
-�i�CZ	?"ǁ�r��
F<Fy8E9Y���%Pa�D�La�%�'y��]�;���S)1�1+R4><�.��ſ��?/�XO�ĿChQN$*���E
�Bk�!
2t�+buh�nUb]xl�l|
-+"�<��AH42}z8p;m�u1�-�eh�Od��w��7x{5�CqEx�=;��e���2��	��*BPM�"
\ No newline at end of file
+�
J�b'T��D�!A��Tw!��!9�G�eNC��^H5�:�
�Y�7�<W�[D�2a�%U!o>M�a�D����X}&nt�yTfVOD(�B�A$�	1��M{��}J3XF����F�a&z� l��Du8�u9�{�<M��?'s��e�Q�"s��N�rc	��@�%�b�a^
7XDG+
+�
�p||{3$�-~KRM�^��|[	�c
\ No newline at end of file
diff --git a/CH32V305/src/link.ld b/CH32V305/link.ld
similarity index 97%
rename from CH32V305/src/link.ld
rename to CH32V305/link.ld
index 9d49fe9..dbcdc6e 100644
--- a/CH32V305/src/link.ld
+++ b/CH32V305/link.ld
@@ -1 +1 @@
-ENTRY( _start )

__stack_size = 2048;

PROVIDE( _stack_size = __stack_size );


MEMORY
{
/* CH32V30x_D8C - CH32V305RB-CH32V305FB
   CH32V30x_D8 - CH32V303CB-CH32V303RB
*/
	FLASH (rx) : ORIGIN = 0x00000000, LENGTH = 128K
	RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 32K
    
/* CH32V30x_D8C - CH32V307VC-CH32V307WC-CH32V307RC
   CH32V30x_D8 - CH32V303VC-CH32V303RC
   FLASH + RAM supports the following configuration
   FLASH-192K + RAM-128K
   FLASH-224K + RAM-96K
   FLASH-256K + RAM-64K  
   FLASH-288K + RAM-32K  
*/
/*
	FLASH (rx) : ORIGIN = 0x00000000, LENGTH = 288K
	RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 32K
*/
}


SECTIONS
{

	.init :
	{
		_sinit = .;
		. = ALIGN(4);
		KEEP(*(SORT_NONE(.init)))
		. = ALIGN(4);
		_einit = .;
	} >FLASH AT>FLASH

  .vector :
  {
      *(.vector);
	  . = ALIGN(64);
  } >FLASH AT>FLASH

	.text :
	{
		. = ALIGN(4);
		*(.text)
		*(.text.*)
		*(.rodata)
		*(.rodata*)
		*(.gnu.linkonce.t.*)
		. = ALIGN(4);
	} >FLASH AT>FLASH 

	.fini :
	{
		KEEP(*(SORT_NONE(.fini)))
		. = ALIGN(4);
	} >FLASH AT>FLASH

	PROVIDE( _etext = . );
	PROVIDE( _eitcm = . );	

	.preinit_array  :
	{
	  PROVIDE_HIDDEN (__preinit_array_start = .);
	  KEEP (*(.preinit_array))
	  PROVIDE_HIDDEN (__preinit_array_end = .);
	} >FLASH AT>FLASH 
	
	.init_array     :
	{
	  PROVIDE_HIDDEN (__init_array_start = .);
	  KEEP (*(SORT_BY_INIT_PRIORITY(.init_array.*) SORT_BY_INIT_PRIORITY(.ctors.*)))
	  KEEP (*(.init_array EXCLUDE_FILE (*crtbegin.o *crtbegin?.o *crtend.o *crtend?.o ) .ctors))
	  PROVIDE_HIDDEN (__init_array_end = .);
	} >FLASH AT>FLASH 
	
	.fini_array     :
	{
	  PROVIDE_HIDDEN (__fini_array_start = .);
	  KEEP (*(SORT_BY_INIT_PRIORITY(.fini_array.*) SORT_BY_INIT_PRIORITY(.dtors.*)))
	  KEEP (*(.fini_array EXCLUDE_FILE (*crtbegin.o *crtbegin?.o *crtend.o *crtend?.o ) .dtors))
	  PROVIDE_HIDDEN (__fini_array_end = .);
	} >FLASH AT>FLASH 
	
	.ctors          :
	{
	  /* gcc uses crtbegin.o to find the start of
	     the constructors, so we make sure it is
	     first.  Because this is a wildcard, it
	     doesn't matter if the user does not
	     actually link against crtbegin.o; the
	     linker won't look for a file to match a
	     wildcard.  The wildcard also means that it
	     doesn't matter which directory crtbegin.o
	     is in.  */
	  KEEP (*crtbegin.o(.ctors))
	  KEEP (*crtbegin?.o(.ctors))
	  /* We don't want to include the .ctor section from
	     the crtend.o file until after the sorted ctors.
	     The .ctor section from the crtend file contains the
	     end of ctors marker and it must be last */
	  KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o ) .ctors))
	  KEEP (*(SORT(.ctors.*)))
	  KEEP (*(.ctors))
	} >FLASH AT>FLASH 
	
	.dtors          :
	{
	  KEEP (*crtbegin.o(.dtors))
	  KEEP (*crtbegin?.o(.dtors))
	  KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o ) .dtors))
	  KEEP (*(SORT(.dtors.*)))
	  KEEP (*(.dtors))
	} >FLASH AT>FLASH 

	.dalign :
	{
		. = ALIGN(4);
		PROVIDE(_data_vma = .);
	} >RAM AT>FLASH	

	.dlalign :
	{
		. = ALIGN(4); 
		PROVIDE(_data_lma = .);
	} >FLASH AT>FLASH

	.data :
	{
    	*(.gnu.linkonce.r.*)
    	*(.data .data.*)
    	*(.gnu.linkonce.d.*)
		. = ALIGN(8);
    	PROVIDE( __global_pointer$ = . + 0x800 );
    	*(.sdata .sdata.*)
		*(.sdata2.*)
    	*(.gnu.linkonce.s.*)
    	. = ALIGN(8);
    	*(.srodata.cst16)
    	*(.srodata.cst8)
    	*(.srodata.cst4)
    	*(.srodata.cst2)
    	*(.srodata .srodata.*)
    	. = ALIGN(4);
		PROVIDE( _edata = .);
	} >RAM AT>FLASH

	.bss :
	{
		. = ALIGN(4);
		PROVIDE( _sbss = .);
  	    *(.sbss*)
        *(.gnu.linkonce.sb.*)
		*(.bss*)
     	*(.gnu.linkonce.b.*)		
		*(COMMON*)
		. = ALIGN(4);
		PROVIDE( _ebss = .);
	} >RAM AT>FLASH

	PROVIDE( _end = _ebss);
	PROVIDE( end = . );

    .stack ORIGIN(RAM) + LENGTH(RAM) - __stack_size :
    {
        PROVIDE( _heap_end = . );    
        . = ALIGN(4);
        PROVIDE(_susrstack = . );
        . = . + __stack_size;
        PROVIDE( _eusrstack = .);
    } >RAM 

}



\ No newline at end of file
+ENTRY( _start )

__stack_size = 4096;

PROVIDE( _stack_size = __stack_size );


MEMORY
{
/* CH32V30x_D8C - CH32V305RB-CH32V305FB
   CH32V30x_D8 - CH32V303CB-CH32V303RB
*/
	FLASH (rx) : ORIGIN = 0x00000000, LENGTH = 128K
	RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 32K
    
/* CH32V30x_D8C - CH32V307VC-CH32V307WC-CH32V307RC
   CH32V30x_D8 - CH32V303VC-CH32V303RC
   FLASH + RAM supports the following configuration
   FLASH-192K + RAM-128K
   FLASH-224K + RAM-96K
   FLASH-256K + RAM-64K  
   FLASH-288K + RAM-32K  
*/
/*
	FLASH (rx) : ORIGIN = 0x00000000, LENGTH = 288K
	RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 32K
*/
}


SECTIONS
{

	.init :
	{
		_sinit = .;
		. = ALIGN(4);
		KEEP(*(SORT_NONE(.init)))
		. = ALIGN(4);
		_einit = .;
	} >FLASH AT>FLASH

  .vector :
  {
      *(.vector);
	  . = ALIGN(64);
  } >FLASH AT>FLASH

	.text :
	{
		. = ALIGN(4);
		*(.text)
		*(.text.*)
		*(.rodata)
		*(.rodata*)
		*(.gnu.linkonce.t.*)
		. = ALIGN(4);
	} >FLASH AT>FLASH 

	.fini :
	{
		KEEP(*(SORT_NONE(.fini)))
		. = ALIGN(4);
	} >FLASH AT>FLASH

	PROVIDE( _etext = . );
	PROVIDE( _eitcm = . );	

	.preinit_array  :
	{
	  PROVIDE_HIDDEN (__preinit_array_start = .);
	  KEEP (*(.preinit_array))
	  PROVIDE_HIDDEN (__preinit_array_end = .);
	} >FLASH AT>FLASH 
	
	.init_array     :
	{
	  PROVIDE_HIDDEN (__init_array_start = .);
	  KEEP (*(SORT_BY_INIT_PRIORITY(.init_array.*) SORT_BY_INIT_PRIORITY(.ctors.*)))
	  KEEP (*(.init_array EXCLUDE_FILE (*crtbegin.o *crtbegin?.o *crtend.o *crtend?.o ) .ctors))
	  PROVIDE_HIDDEN (__init_array_end = .);
	} >FLASH AT>FLASH 
	
	.fini_array     :
	{
	  PROVIDE_HIDDEN (__fini_array_start = .);
	  KEEP (*(SORT_BY_INIT_PRIORITY(.fini_array.*) SORT_BY_INIT_PRIORITY(.dtors.*)))
	  KEEP (*(.fini_array EXCLUDE_FILE (*crtbegin.o *crtbegin?.o *crtend.o *crtend?.o ) .dtors))
	  PROVIDE_HIDDEN (__fini_array_end = .);
	} >FLASH AT>FLASH 
	
	.ctors          :
	{
	  /* gcc uses crtbegin.o to find the start of
	     the constructors, so we make sure it is
	     first.  Because this is a wildcard, it
	     doesn't matter if the user does not
	     actually link against crtbegin.o; the
	     linker won't look for a file to match a
	     wildcard.  The wildcard also means that it
	     doesn't matter which directory crtbegin.o
	     is in.  */
	  KEEP (*crtbegin.o(.ctors))
	  KEEP (*crtbegin?.o(.ctors))
	  /* We don't want to include the .ctor section from
	     the crtend.o file until after the sorted ctors.
	     The .ctor section from the crtend file contains the
	     end of ctors marker and it must be last */
	  KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o ) .ctors))
	  KEEP (*(SORT(.ctors.*)))
	  KEEP (*(.ctors))
	} >FLASH AT>FLASH 
	
	.dtors          :
	{
	  KEEP (*crtbegin.o(.dtors))
	  KEEP (*crtbegin?.o(.dtors))
	  KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o ) .dtors))
	  KEEP (*(SORT(.dtors.*)))
	  KEEP (*(.dtors))
	} >FLASH AT>FLASH 

	.dalign :
	{
		. = ALIGN(4);
		PROVIDE(_data_vma = .);
	} >RAM AT>FLASH	

	.dlalign :
	{
		. = ALIGN(4); 
		PROVIDE(_data_lma = .);
	} >FLASH AT>FLASH

	.data :
	{
    	*(.gnu.linkonce.r.*)
    	*(.data .data.*)
    	*(.gnu.linkonce.d.*)
		. = ALIGN(8);
    	PROVIDE( __global_pointer$ = . + 0x800 );
    	*(.sdata .sdata.*)
		*(.sdata2.*)
    	*(.gnu.linkonce.s.*)
    	. = ALIGN(8);
    	*(.srodata.cst16)
    	*(.srodata.cst8)
    	*(.srodata.cst4)
    	*(.srodata.cst2)
    	*(.srodata .srodata.*)
    	. = ALIGN(4);
		PROVIDE( _edata = .);
	} >RAM AT>FLASH

	.bss :
	{
		. = ALIGN(4);
		PROVIDE( _sbss = .);
  	    *(.sbss*)
        *(.gnu.linkonce.sb.*)
		*(.bss*)
     	*(.gnu.linkonce.b.*)		
		*(COMMON*)
		. = ALIGN(4);
		PROVIDE( _ebss = .);
	} >RAM AT>FLASH

	PROVIDE( _end = _ebss);
	PROVIDE( end = . );

    .stack ORIGIN(RAM) + LENGTH(RAM) - __stack_size :
    {
        PROVIDE( _heap_end = . );    
        . = ALIGN(4);
        PROVIDE(_susrstack = . );
        . = . + __stack_size;
        PROVIDE( _eusrstack = .);
    } >RAM 

}



\ No newline at end of file
diff --git a/CH32V305/src/vcom_serial.c b/CH32V305/src/vcom_serial.c
index 7a1a531..68e0348 100644
--- a/CH32V305/src/vcom_serial.c
+++ b/CH32V305/src/vcom_serial.c
@@ -11,12 +11,10 @@ volatile VCOM Vcom;
 
 VCOM_LINE_CODING LineCfg = {115200, 0, 0, 8};   // Baud rate, stop bits, parity bits, data bits
 
-volatile uint32_t RX_Timeout = (1000.0 / 115200) * (512 * 10) * 1.5;
 
-
-#define BUF_SZ  1024
-uint8_t TXBuffer[BUF_SZ] __attribute__((aligned(4)));
-uint8_t RXBuffer[BUF_SZ] __attribute__((aligned(4)));
+#define RXDMA_SZ  (CDC_BULK_IN_SZ_HS * 2)
+uint8_t RXBuffer[RXDMA_SZ] __attribute__((aligned(4)));
+uint8_t TXBuffer[CDC_BULK_OUT_SZ_HS] __attribute__((aligned(4)));
 
 
 void VCOM_Init(void)
@@ -29,10 +27,9 @@ void VCOM_Init(void)
     RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART3, ENABLE);
     RCC_AHBPeriphClockCmd (RCC_AHBPeriph_DMA1, ENABLE);
 
-
     GPIO_InitStructure.GPIO_Pin   = GPIO_Pin_10;
-    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
     GPIO_InitStructure.GPIO_Mode  = GPIO_Mode_AF_PP;
+    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
     GPIO_Init(GPIOB, &GPIO_InitStructure);              // PB10 => USART3_TX
 
     GPIO_InitStructure.GPIO_Pin   = GPIO_Pin_11;
@@ -48,14 +45,23 @@ void VCOM_Init(void)
     DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte;
     DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte;
     DMA_InitStructure.DMA_BufferSize = 0;
-    DMA_InitStructure.DMA_Priority = DMA_Priority_Medium;
+    DMA_InitStructure.DMA_Priority = DMA_Priority_High;
     DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
     DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
     DMA_Init(DMA1_Channel2, &DMA_InitStructure);
     DMA_Cmd(DMA1_Channel2, ENABLE);
 
     DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
+    DMA_InitStructure.DMA_PeripheralBaseAddr = (u32)&USART3->DATAR;
+    DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
     DMA_InitStructure.DMA_MemoryBaseAddr = (u32)RXBuffer;
+    DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
+    DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte;
+    DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte;
+    DMA_InitStructure.DMA_BufferSize = RXDMA_SZ;
+    DMA_InitStructure.DMA_Priority = DMA_Priority_High;
+    DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;
+    DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
     DMA_Init(DMA1_Channel3, &DMA_InitStructure);
     DMA_Cmd(DMA1_Channel3, ENABLE);
 
@@ -110,72 +116,40 @@ void VCOM_LineCoding(VCOM_LINE_CODING * LineCfgx)
     __disable_irq();
     
     USART_Init(USART3, &USART_InitStructure);
-    
-    RX_Timeout = (1000.0 / USART_InitStructure.USART_BaudRate) * (512 * 10) * 1.5;
 
     __enable_irq();
 }
 
 
 extern volatile uint32_t SysTick_ms;
+
 void VCOM_TransferData(void)
 {
-    uint8_t *rxdata = RXBuffer;
+    static uint32_t last_ms = 0;
+    static uint32_t last_pos = 0;
 
     if(Vcom.in_ready)		// 可以向主机发送数据
     {
-        if((DMA1->INTFR & (DMA1_FLAG_HT3 | DMA1_FLAG_TC3)) || (SysTick_ms > RX_Timeout))
+        uint32_t pos = RXDMA_SZ - DMA_GetCurrDataCounter(DMA1_Channel3);
+        if((pos - last_pos >= CDC_BULK_IN_SZ_HS) || ((pos != last_pos) && (SysTick_ms != last_ms)))
         {
-            if(DMA1->INTFR & DMA1_FLAG_HT3)
-            {
-                rxdata = &RXBuffer[0];
-
-                Vcom.in_bytes = BUF_SZ/2;
-
-                DMA1->INTFCR = DMA1_FLAG_HT3;
-            }
-            else if(DMA1->INTFR & DMA1_FLAG_TC3)
-            {
-                rxdata = &RXBuffer[BUF_SZ/2];
-
-                Vcom.in_bytes = BUF_SZ/2;
-
-                DMA1->INTFCR = DMA1_FLAG_TC3;
-
-                SysTick_ms = 0;
-            }
-            else
-            {
-                SysTick_ms = 0;
-
-                uint32_t n_xfer = BUF_SZ - DMA_GetCurrDataCounter(DMA1_Channel3);
-                if(n_xfer == 0)
-                {
-                    goto xfer_out;
-                }
-                if(n_xfer < BUF_SZ/2)
-                {
-                    rxdata = &RXBuffer[0];
-
-                    Vcom.in_bytes = n_xfer;
-                }
-                else
-                {
-                    rxdata = &RXBuffer[BUF_SZ/2];
-
-                    Vcom.in_bytes = n_xfer - BUF_SZ/2;
-                }
-
-                DMA_Cmd(DMA1_Channel3, DISABLE);
-                DMA_SetCurrDataCounter(DMA1_Channel3, BUF_SZ);
-                DMA_Cmd(DMA1_Channel3, ENABLE);
-            }
+            if(pos < last_pos)
+                pos = RXDMA_SZ;
+
+            if(pos - last_pos > CDC_BULK_IN_SZ_HS)
+                pos = last_pos + CDC_BULK_IN_SZ_HS;
+
+            Vcom.in_bytes = pos - last_pos;
 
             Vcom.in_ready = 0;
 
-            USBHSD->UEP3_TX_DMA = (uint32_t)rxdata;
+            USBHSD->UEP3_TX_DMA = (uint32_t)&RXBuffer[last_pos];
             USBHSD->UEP3_TX_LEN = Vcom.in_bytes;
             USBHSD->UEP3_TX_CTRL = (USBHSD->UEP3_TX_CTRL & ~USBHS_UEP_T_RES_MASK) | USBHS_UEP_T_RES_ACK;
+
+            last_pos = pos % RXDMA_SZ;
+
+            last_ms = SysTick_ms;
         }
         else
         {