diff --git a/.idea/workspace.xml b/.idea/workspace.xml
index 8a04034..a6f2f11 100644
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
@@ -28,12 +28,8 @@
     </configurations>
   </component>
   <component name="ChangeListManager">
-    <list default="true" id="56631632-52f0-4e39-b905-89e46eb6e768" name="Changes" comment="feat: usart retarget">
+    <list default="true" id="56631632-52f0-4e39-b905-89e46eb6e768" name="Changes" comment="feat: rcc522 card reader">
       <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/Core/Src/gpio.c" beforeDir="false" afterPath="$PROJECT_DIR$/Core/Src/gpio.c" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/Core/Src/main.c" beforeDir="false" afterPath="$PROJECT_DIR$/Core/Src/main.c" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/Core/Src/rc522.c" beforeDir="false" afterPath="$PROJECT_DIR$/Core/Src/rc522.c" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/IntelliChargingPile.ioc" beforeDir="false" afterPath="$PROJECT_DIR$/IntelliChargingPile.ioc" afterDir="false" />
     </list>
     <option name="SHOW_DIALOG" value="false" />
     <option name="HIGHLIGHT_CONFLICTS" value="true" />
@@ -64,43 +60,38 @@
     <option name="hideEmptyMiddlePackages" value="true" />
     <option name="showLibraryContents" value="true" />
   </component>
-  <component name="PropertiesComponent"><![CDATA[{
-  "keyToString": {
-    "ASKED_SHARE_PROJECT_CONFIGURATION_FILES": "true",
-    "CMake Application.IntelliChargingPile.elf.executor": "Run",
-    "OpenOCD Download & Run.IntelliChargingPile.elf.executor": "Run",
-    "OpenOCD Download & Run.OCD IntelliChargingPile.executor": "Run",
-    "RunOnceActivity.RadMigrateCodeStyle": "true",
-    "RunOnceActivity.ShowReadmeOnStart": "true",
-    "RunOnceActivity.cidr.known.project.marker": "true",
-    "RunOnceActivity.git.unshallow": "true",
-    "RunOnceActivity.readMode.enableVisualFormatting": "true",
-    "RunOnceActivity.west.config.association.type.startup.service": "true",
-    "SHARE_PROJECT_CONFIGURATION_FILES": "true",
-    "cf.first.check.clang-format": "false",
-    "cidr.known.project.marker": "true",
-    "git-widget-placeholder": "main",
-    "last_opened_file_path": "V:/projects/School/IntelliChargingPile",
-    "node.js.detected.package.eslint": "true",
-    "node.js.detected.package.tslint": "true",
-    "node.js.selected.package.eslint": "(autodetect)",
-    "node.js.selected.package.tslint": "(autodetect)",
-    "nodejs_package_manager_path": "npm",
-    "settings.editor.selected.configurable": "CMakeSettings",
-    "vue.rearranger.settings.migration": "true"
+  <component name="PropertiesComponent">{
+  &quot;keyToString&quot;: {
+    &quot;ASKED_SHARE_PROJECT_CONFIGURATION_FILES&quot;: &quot;true&quot;,
+    &quot;CMake Application.IntelliChargingPile.elf.executor&quot;: &quot;Run&quot;,
+    &quot;OpenOCD Download &amp; Run.IntelliChargingPile.elf.executor&quot;: &quot;Run&quot;,
+    &quot;OpenOCD Download &amp; Run.OCD IntelliChargingPile.executor&quot;: &quot;Run&quot;,
+    &quot;RunOnceActivity.RadMigrateCodeStyle&quot;: &quot;true&quot;,
+    &quot;RunOnceActivity.ShowReadmeOnStart&quot;: &quot;true&quot;,
+    &quot;RunOnceActivity.cidr.known.project.marker&quot;: &quot;true&quot;,
+    &quot;RunOnceActivity.git.unshallow&quot;: &quot;true&quot;,
+    &quot;RunOnceActivity.readMode.enableVisualFormatting&quot;: &quot;true&quot;,
+    &quot;RunOnceActivity.west.config.association.type.startup.service&quot;: &quot;true&quot;,
+    &quot;SHARE_PROJECT_CONFIGURATION_FILES&quot;: &quot;true&quot;,
+    &quot;cf.first.check.clang-format&quot;: &quot;false&quot;,
+    &quot;cidr.known.project.marker&quot;: &quot;true&quot;,
+    &quot;git-widget-placeholder&quot;: &quot;main&quot;,
+    &quot;last_opened_file_path&quot;: &quot;V:/projects/School/IntelliChargingPile&quot;,
+    &quot;node.js.detected.package.eslint&quot;: &quot;true&quot;,
+    &quot;node.js.detected.package.tslint&quot;: &quot;true&quot;,
+    &quot;node.js.selected.package.eslint&quot;: &quot;(autodetect)&quot;,
+    &quot;node.js.selected.package.tslint&quot;: &quot;(autodetect)&quot;,
+    &quot;nodejs_package_manager_path&quot;: &quot;npm&quot;,
+    &quot;settings.editor.selected.configurable&quot;: &quot;CMakeSettings&quot;,
+    &quot;vue.rearranger.settings.migration&quot;: &quot;true&quot;
   }
-}]]></component>
+}</component>
   <component name="RecentsManager">
     <key name="MoveFile.RECENT_KEYS">
       <recent name="V:\projects\School\IntelliChargingPile\Core\Inc" />
     </key>
   </component>
   <component name="RunManager" selected="OpenOCD Download &amp; Run.OCD IntelliChargingPile">
-    <configuration default="true" type="CLionExternalRunConfiguration" factoryName="Application" REDIRECT_INPUT="false" ELEVATE="false" USE_EXTERNAL_CONSOLE="false" EMULATE_TERMINAL="false" PASS_PARENT_ENVS_2="true">
-      <method v="2">
-        <option name="CLION.EXTERNAL.BUILD" enabled="true" />
-      </method>
-    </configuration>
     <configuration name="IntelliChargingPile.elf" type="CMakeRunConfiguration" factoryName="Application" REDIRECT_INPUT="false" ELEVATE="false" USE_EXTERNAL_CONSOLE="false" EMULATE_TERMINAL="false" PASS_PARENT_ENVS_2="true" PROJECT_NAME="IntelliChargingPile" TARGET_NAME="IntelliChargingPile.elf" CONFIG_NAME="Debug" RUN_TARGET_PROJECT_NAME="IntelliChargingPile" RUN_TARGET_NAME="IntelliChargingPile.elf">
       <method v="2">
         <option name="com.jetbrains.cidr.execution.CidrBuildBeforeRunTaskProvider$BuildBeforeRunTask" enabled="true" />
@@ -130,7 +121,8 @@
       <workItem from="1742375147816" duration="297000" />
       <workItem from="1742375453292" duration="8414000" />
       <workItem from="1742385111843" duration="9995000" />
-      <workItem from="1742408425253" duration="7279000" />
+      <workItem from="1742408425253" duration="9681000" />
+      <workItem from="1742495966352" duration="2000" />
     </task>
     <task id="LOCAL-00001" summary="initial commit: oled, rc522, exti">
       <option name="closed" value="true" />
@@ -148,7 +140,15 @@
       <option name="project" value="LOCAL" />
       <updated>1742409329840</updated>
     </task>
-    <option name="localTasksCounter" value="3" />
+    <task id="LOCAL-00003" summary="feat: rcc522 card reader">
+      <option name="closed" value="true" />
+      <created>1742416201898</created>
+      <option name="number" value="00003" />
+      <option name="presentableId" value="LOCAL-00003" />
+      <option name="project" value="LOCAL" />
+      <updated>1742416201898</updated>
+    </task>
+    <option name="localTasksCounter" value="4" />
     <servers />
   </component>
   <component name="TypeScriptGeneratedFilesManager">
@@ -162,6 +162,7 @@
   <component name="VcsManagerConfiguration">
     <MESSAGE value="initial commit: oled, rc522, exti" />
     <MESSAGE value="feat: usart retarget" />
-    <option name="LAST_COMMIT_MESSAGE" value="feat: usart retarget" />
+    <MESSAGE value="feat: rcc522 card reader" />
+    <option name="LAST_COMMIT_MESSAGE" value="feat: rcc522 card reader" />
   </component>
 </project>
\ No newline at end of file