diff --git a/.idea/workspace.xml b/.idea/workspace.xml
index 42d385c..2483fed 100644
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
@@ -29,22 +29,10 @@
     </configurations>
   </component>
   <component name="ChangeListManager">
-    <list default="true" id="56631632-52f0-4e39-b905-89e46eb6e768" name="Changes" comment="dev: 暂时禁用指令下发处理">
+    <list default="true" id="56631632-52f0-4e39-b905-89e46eb6e768" name="Changes" comment="feat: add DMA support">
       <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/.mxproject" beforeDir="false" afterPath="$PROJECT_DIR$/.mxproject" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/Core/Inc/main.h" beforeDir="false" afterPath="$PROJECT_DIR$/Core/Inc/main.h" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/Core/Inc/oledfont.h" beforeDir="false" afterPath="$PROJECT_DIR$/Core/Inc/oledfont.h" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/Core/Inc/rc522.h" beforeDir="false" afterPath="$PROJECT_DIR$/Core/Inc/rc522.h" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/Core/Inc/stm32f1xx_hal_conf.h" beforeDir="false" afterPath="$PROJECT_DIR$/Core/Inc/stm32f1xx_hal_conf.h" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/Core/Inc/stm32f1xx_it.h" beforeDir="false" afterPath="$PROJECT_DIR$/Core/Inc/stm32f1xx_it.h" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/Core/Src/OneNet.c" beforeDir="false" afterPath="$PROJECT_DIR$/Core/Src/OneNet.c" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/Core/Src/esp8266.c" beforeDir="false" afterPath="$PROJECT_DIR$/Core/Src/esp8266.c" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/Core/Src/freertos.c" beforeDir="false" afterPath="$PROJECT_DIR$/Core/Src/freertos.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="$PROJECT_DIR$/Core/Src/spi.c" beforeDir="false" afterPath="$PROJECT_DIR$/Core/Src/spi.c" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/Core/Src/stm32f1xx_it.c" beforeDir="false" afterPath="$PROJECT_DIR$/Core/Src/stm32f1xx_it.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" />
@@ -977,7 +965,7 @@
       <workItem from="1743488783461" duration="3691000" />
       <workItem from="1743492489952" duration="8816000" />
       <workItem from="1743525779889" duration="15870000" />
-      <workItem from="1746680992201" duration="37397000" />
+      <workItem from="1746680992201" duration="39002000" />
     </task>
     <task id="LOCAL-00001" summary="initial commit: oled, rc522, exti">
       <option name="closed" value="true" />
@@ -1075,7 +1063,23 @@
       <option name="project" value="LOCAL" />
       <updated>1746710418606</updated>
     </task>
-    <option name="localTasksCounter" value="13" />
+    <task id="LOCAL-00013" summary="feat: 完成状态机，完成刷卡、数据上报、命令处理">
+      <option name="closed" value="true" />
+      <created>1746724022145</created>
+      <option name="number" value="00013" />
+      <option name="presentableId" value="LOCAL-00013" />
+      <option name="project" value="LOCAL" />
+      <updated>1746724022145</updated>
+    </task>
+    <task id="LOCAL-00014" summary="feat: add DMA support">
+      <option name="closed" value="true" />
+      <created>1746724037639</created>
+      <option name="number" value="00014" />
+      <option name="presentableId" value="LOCAL-00014" />
+      <option name="project" value="LOCAL" />
+      <updated>1746724037639</updated>
+    </task>
+    <option name="localTasksCounter" value="15" />
     <servers />
   </component>
   <component name="TypeScriptGeneratedFilesManager">
@@ -1098,19 +1102,21 @@
     <MESSAGE value="feat: before tring to fix cmdHandler" />
     <MESSAGE value="chore: update .gitignore" />
     <MESSAGE value="dev: 暂时禁用指令下发处理" />
-    <option name="LAST_COMMIT_MESSAGE" value="dev: 暂时禁用指令下发处理" />
+    <MESSAGE value="feat: 完成状态机，完成刷卡、数据上报、命令处理" />
+    <MESSAGE value="feat: add DMA support" />
+    <option name="LAST_COMMIT_MESSAGE" value="feat: add DMA support" />
   </component>
   <component name="XDebuggerManager">
     <breakpoint-manager>
       <breakpoints>
         <line-breakpoint enabled="true" type="com.jetbrains.cidr.execution.debugger.OCBreakpointType">
           <url>file://$PROJECT_DIR$/Core/Src/OneNet.c</url>
-          <line>66</line>
+          <line>97</line>
           <option name="timeStamp" value="16" />
         </line-breakpoint>
         <line-breakpoint enabled="true" type="com.jetbrains.cidr.execution.debugger.OCBreakpointType">
           <url>file://$PROJECT_DIR$/Core/Src/OneNet.c</url>
-          <line>163</line>
+          <line>194</line>
           <option name="timeStamp" value="17" />
         </line-breakpoint>
       </breakpoints>
diff --git a/Core/Src/OneNet.c b/Core/Src/OneNet.c
index 231554e..3d88679 100644
--- a/Core/Src/OneNet.c
+++ b/Core/Src/OneNet.c
@@ -61,44 +61,75 @@ _Bool OneNet_DevLink(void)
 
 unsigned char OneNet_FillBuf(char* buf)
 {
-    cJSON* packet = cJSON_CreateObject();
+    char text[48];
 
-    char packet_id[16];
-    sprintf(packet_id, "%d", uwTick);
-    cJSON_AddItemToObject(packet, "id", cJSON_CreateString(packet_id));
+    strcpy(buf, "{\"id\":\"1743082944\",\"params\":{");
 
-    cJSON* params = cJSON_CreateObject();
-    cJSON* valueObj = cJSON_CreateObject();
+    memset(text, 0, sizeof(text));
+    sprintf(text, "\"volt\":{\"value\":%.2f},", IM_Volt * 0.0001);
+    strcat(buf, text);
 
-    cJSON_AddItemToObject(valueObj, "value", cJSON_CreateNumber(IM_Volt * 0.0001));
-    cJSON_AddItemToObject(params, "volt", valueObj);
+    memset(text, 0, sizeof(text));
+    sprintf(text, "\"current\":{\"value\":%.2f},", IM_Curr * 0.0001);
+    strcat(buf, text);
 
-    valueObj = cJSON_CreateObject();
-    cJSON_AddItemToObject(valueObj, "value", cJSON_CreateNumber(IM_Curr * 0.0001));
-    cJSON_AddItemToObject(params, "current", valueObj);
+    memset(text, 0, sizeof(text));
+    sprintf(text, "\"watt_P\":{\"value\":%.2f},", IM_Power * 0.0001);
+    strcat(buf, text);
 
-    valueObj = cJSON_CreateObject();
-    cJSON_AddItemToObject(valueObj, "value", cJSON_CreateNumber(IM_Power * 0.0001));
-    cJSON_AddItemToObject(params, "watt_P", valueObj);
+    memset(text, 0, sizeof(text));
+    sprintf(text, "\"energy\":{\"value\":%.3f},", IM_Energy * 0.0001);
+    strcat(buf, text);
 
-    valueObj = cJSON_CreateObject();
-    cJSON_AddItemToObject(valueObj, "value", cJSON_CreateNumber(IM_Energy * 0.0001));
-    cJSON_AddItemToObject(params, "energy", valueObj);
+    memset(text, 0, sizeof(text));
+    sprintf(text, "\"ic_id\":{\"value\":\"%s\"},", IC_CARD_ID);
+    strcat(buf, text);
 
-    valueObj = cJSON_CreateObject();
-    cJSON_AddItemToObject(valueObj, "value", cJSON_CreateString(IC_CARD_ID));
-    cJSON_AddItemToObject(params, "ic_id", valueObj);
+    memset(text, 0, sizeof(text));
+    sprintf(text, "\"output\":{\"value\":%s}",
+            HAL_GPIO_ReadPin(RELAY1_GPIO_Port, RELAY1_Pin) == GPIO_PIN_RESET ? "true" : "false");
+    strcat(buf, text);
 
-    valueObj = cJSON_CreateObject();
-    cJSON_AddItemToObject(valueObj, "value", cJSON_CreateBool(HAL_GPIO_ReadPin(RELAY1_GPIO_Port, RELAY1_Pin) == GPIO_PIN_RESET));
-    cJSON_AddItemToObject(params, "output", valueObj);
+    strcat(buf, "}}");
 
-    cJSON_AddItemToObject(packet, "params", params);
-
-    const char* json_str = cJSON_Print(packet);
-    strcpy(buf, json_str);
-
-    cJSON_Delete(packet);
+    // cJSON* packet = cJSON_CreateObject();
+    //
+    // char packet_id[16];
+    // sprintf(packet_id, "%d", uwTick);
+    // cJSON_AddItemToObject(packet, "id", cJSON_CreateString(packet_id));
+    //
+    // cJSON* params = cJSON_CreateObject();
+    // cJSON* valueObj = cJSON_CreateObject();
+    //
+    // cJSON_AddItemToObject(valueObj, "value", cJSON_CreateNumber(IM_Volt * 0.0001));
+    // cJSON_AddItemToObject(params, "volt", valueObj);
+    //
+    // valueObj = cJSON_CreateObject();
+    // cJSON_AddItemToObject(valueObj, "value", cJSON_CreateNumber(IM_Curr * 0.0001));
+    // cJSON_AddItemToObject(params, "current", valueObj);
+    //
+    // valueObj = cJSON_CreateObject();
+    // cJSON_AddItemToObject(valueObj, "value", cJSON_CreateNumber(IM_Power * 0.0001));
+    // cJSON_AddItemToObject(params, "watt_P", valueObj);
+    //
+    // valueObj = cJSON_CreateObject();
+    // cJSON_AddItemToObject(valueObj, "value", cJSON_CreateNumber(IM_Energy * 0.0001));
+    // cJSON_AddItemToObject(params, "energy", valueObj);
+    //
+    // valueObj = cJSON_CreateObject();
+    // cJSON_AddItemToObject(valueObj, "value", cJSON_CreateString(IC_CARD_ID));
+    // cJSON_AddItemToObject(params, "ic_id", valueObj);
+    //
+    // valueObj = cJSON_CreateObject();
+    // cJSON_AddItemToObject(valueObj, "value", cJSON_CreateBool(HAL_GPIO_ReadPin(RELAY1_GPIO_Port, RELAY1_Pin) == GPIO_PIN_RESET));
+    // cJSON_AddItemToObject(params, "output", valueObj);
+    //
+    // cJSON_AddItemToObject(packet, "params", params);
+    //
+    // const char* json_str = cJSON_Print(packet);
+    // strcpy(buf, json_str);
+    //
+    // cJSON_Delete(packet);
 
     return strlen(buf);
 }
diff --git a/Core/Src/freertos.c b/Core/Src/freertos.c
index bcff0f2..a1865ea 100644
--- a/Core/Src/freertos.c
+++ b/Core/Src/freertos.c
@@ -324,7 +324,7 @@ void Display_IM1281B(void)
 
   char buffer[16];
 
-  snprintf(buffer, sizeof(buffer), "%.2fV ", IM_Volt * 0.0001);
+  snprintf(buffer, sizeof(buffer), "%.1f ", IM_Volt * 0.0001);
   OLED_ShowString(16, 5, buffer, 12);
 
   snprintf(buffer, sizeof(buffer), "%.2fA ", IM_Curr * 0.0001);