diff --git a/.cproject b/.cproject
index 164e0aa..9c599ad 100644
--- a/.cproject
+++ b/.cproject
@@ -90,7 +90,7 @@
 									<listOptionValue builtIn="false" value="-Wno-sign-compare"/>
 									<listOptionValue builtIn="false" value="-Wno-unused-variable"/>
 								</option>
-								<option id="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.cpp.compiler.option.nortti.782400078" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.cpp.compiler.option.nortti" useByScannerDiscovery="false" value="false" valueType="boolean"/>
+								<option id="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.cpp.compiler.option.nortti.782400078" name="Disable generation of information about every class with virtual functions (-fno-rtti)" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.cpp.compiler.option.nortti" useByScannerDiscovery="false" value="false" valueType="boolean"/>
 								<inputType id="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.cpp.compiler.input.cpp.54112860" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.cpp.compiler.input.cpp"/>
 							</tool>
 							<tool id="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.linker.163881313" name="MCU GCC Linker" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.linker"/>
diff --git a/.settings/language.settings.xml b/.settings/language.settings.xml
index 6ace92a..205f9d6 100644
--- a/.settings/language.settings.xml
+++ b/.settings/language.settings.xml
@@ -5,7 +5,7 @@
 			<provider copy-of="extension" id="org.eclipse.cdt.ui.UserLanguageSettingsProvider"/>
 			<provider-reference id="org.eclipse.cdt.core.ReferencedProjectsLanguageSettingsProvider" ref="shared-provider"/>
 			<provider-reference id="org.eclipse.cdt.managedbuilder.core.MBSLanguageSettingsProvider" ref="shared-provider"/>
-			<provider class="com.st.stm32cube.ide.mcu.toolchain.armnone.setup.CrossBuiltinSpecsDetector" console="false" env-hash="-430597571240994160" id="com.st.stm32cube.ide.mcu.toolchain.armnone.setup.CrossBuiltinSpecsDetector" keep-relative-paths="false" name="MCU ARM GCC Built-in Compiler Settings" parameter="${COMMAND} ${FLAGS} -E -P -v -dD &quot;${INPUTS}&quot;" prefer-non-shared="true">
+			<provider class="com.st.stm32cube.ide.mcu.toolchain.armnone.setup.CrossBuiltinSpecsDetector" console="false" env-hash="1639727099451158917" id="com.st.stm32cube.ide.mcu.toolchain.armnone.setup.CrossBuiltinSpecsDetector" keep-relative-paths="false" name="MCU ARM GCC Built-in Compiler Settings" parameter="${COMMAND} ${FLAGS} -E -P -v -dD &quot;${INPUTS}&quot;" prefer-non-shared="true">
 				<language-scope id="org.eclipse.cdt.core.gcc"/>
 				<language-scope id="org.eclipse.cdt.core.g++"/>
 			</provider>
@@ -16,7 +16,7 @@
 			<provider copy-of="extension" id="org.eclipse.cdt.ui.UserLanguageSettingsProvider"/>
 			<provider-reference id="org.eclipse.cdt.core.ReferencedProjectsLanguageSettingsProvider" ref="shared-provider"/>
 			<provider-reference id="org.eclipse.cdt.managedbuilder.core.MBSLanguageSettingsProvider" ref="shared-provider"/>
-			<provider class="com.st.stm32cube.ide.mcu.toolchain.armnone.setup.CrossBuiltinSpecsDetector" console="false" env-hash="-381469415379267199" id="com.st.stm32cube.ide.mcu.toolchain.armnone.setup.CrossBuiltinSpecsDetector" keep-relative-paths="false" name="MCU ARM GCC Built-in Compiler Settings" parameter="${COMMAND} ${FLAGS} -E -P -v -dD &quot;${INPUTS}&quot;" prefer-non-shared="true">
+			<provider class="com.st.stm32cube.ide.mcu.toolchain.armnone.setup.CrossBuiltinSpecsDetector" console="false" env-hash="1688855255312885878" id="com.st.stm32cube.ide.mcu.toolchain.armnone.setup.CrossBuiltinSpecsDetector" keep-relative-paths="false" name="MCU ARM GCC Built-in Compiler Settings" parameter="${COMMAND} ${FLAGS} -E -P -v -dD &quot;${INPUTS}&quot;" prefer-non-shared="true">
 				<language-scope id="org.eclipse.cdt.core.gcc"/>
 				<language-scope id="org.eclipse.cdt.core.g++"/>
 			</provider>
diff --git a/.vscode/c_cpp_properties.json b/.vscode/c_cpp_properties.json
index 7003de5..052047a 100644
--- a/.vscode/c_cpp_properties.json
+++ b/.vscode/c_cpp_properties.json
@@ -21,7 +21,9 @@
                 "USE_HAL_DRIVER",
                 "STM32F407xx"
             ],
-            "intelliSenseMode": "${default}"
+            "intelliSenseMode": "${default}",
+            "compilerPath": "C:/ST/STM32CubeIDE_1.13.0/STM32CubeIDE/plugins/com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.11.3.rel1.win32_1.1.0.202305231506/tools/bin/arm-none-eabi-g++.exe",
+
         }
     ],
     "version": 4
diff --git a/.vscode/settings.json b/.vscode/settings.json
index 45563fa..0410200 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -75,7 +75,9 @@
         "stop_token": "cpp",
         "thread": "cpp",
         "early_ticket.h": "c",
-        "chrono": "cpp"
+        "chrono": "cpp",
+        "optional": "cpp",
+        "ranges": "cpp"
     },
     "files.autoGuessEncoding": false,
     "files.encoding": "gbk"
diff --git a/usrc/main.cpp b/usrc/main.cpp
index 387acb0..5bbd076 100644
--- a/usrc/main.cpp
+++ b/usrc/main.cpp
@@ -58,7 +58,10 @@ class PWMCtrler : public ZIPWMCtrl {
   int32_t       m_state;
 
  public:
-  void initialize() { pwm.initialize(&htim2, TIM_CHANNEL_2, 25000, 1); }
+  void initialize() {
+    pwm.initialize(&htim2, TIM_CHANNEL_2, m_freq, 0);
+    pwm.stopPWM();
+  }
 
   virtual int32_t pwm_set_state(int32_t state) {
     if (state) {