diff --git a/MDK-ARM/LWIP.uvguix.29643 b/MDK-ARM/LWIP.uvguix.29643
index fc45450..447d2bb 100644
--- a/MDK-ARM/LWIP.uvguix.29643
+++ b/MDK-ARM/LWIP.uvguix.29643
@@ -111,7 +111,7 @@
       <RegID>0</RegID>
       <MDITabState>
         <Len>726</Len>
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     <ViewEx>
@@ -3603,7 +3603,7 @@
     <ActiveMDIGroup>0</ActiveMDIGroup>
     <MDIGroup>
       <Size>100</Size>
-      <ActiveTab>4</ActiveTab>
+      <ActiveTab>2</ActiveTab>
       <Doc>
         <Name>..\usersrc\config.c</Name>
         <ColumnNumber>19</ColumnNumber>
@@ -3624,9 +3624,9 @@
       </Doc>
       <Doc>
         <Name>..\usersrc\encoder.c</Name>
-        <ColumnNumber>0</ColumnNumber>
+        <ColumnNumber>5</ColumnNumber>
         <TopLine>1</TopLine>
-        <CurrentLine>9</CurrentLine>
+        <CurrentLine>20</CurrentLine>
         <Folding>1</Folding>
         <ContractedFolders></ContractedFolders>
         <PaneID>0</PaneID>
diff --git a/Src/freertos.c b/Src/freertos.c
index 209328f..74079d8 100644
--- a/Src/freertos.c
+++ b/Src/freertos.c
@@ -157,7 +157,13 @@ void MX_FREERTOS_Init(void) {
 void StartDefaultTask(void const * argument)
 {
   /* init code for LWIP */
-  MX_LWIP_Init();
+  if (config_get()->obtaining_ip_mode == OBTAINING_IP_MODE_STATIC){
+    MX_LWIP_STATIC_Init();
+  }else if (config_get()->obtaining_ip_mode == OBTAINING_IP_MODE_DHCP){
+    MX_LWIP_Init();
+  }else{
+    printf("lwip error\r\n");
+  }
   /* USER CODE BEGIN StartDefaultTask */
   osThreadDef(mainTask, StartMainTask, osPriorityNormal, 0, 1024);
   mainTaskHandle = osThreadCreate(osThread(mainTask), NULL);
diff --git a/Src/lwip.c b/Src/lwip.c
index b8c2b28..49d8bcb 100644
--- a/Src/lwip.c
+++ b/Src/lwip.c
@@ -28,9 +28,7 @@
 #include "ethernetif.h"
 
 /* USER CODE BEGIN 0 */
-uint8_t IP_ADDRESS[4];
-uint8_t NETMASK_ADDRESS[4];
-uint8_t GATEWAY_ADDRESS[4];
+#include "config.h"
 /* USER CODE END 0 */
 /* Private function prototypes -----------------------------------------------*/
 static void ethernet_link_status_updated(struct netif *netif);
@@ -50,25 +48,11 @@ ip4_addr_t gw;
 /* USER CODE BEGIN 2 */
 void MX_LWIP_STATIC_Init(void)
 {
-  IP_ADDRESS[0] = 192;
-  IP_ADDRESS[1] = 168;
-  IP_ADDRESS[2] = 8;
-  IP_ADDRESS[3] = 10;
-  NETMASK_ADDRESS[0] = 255;
-  NETMASK_ADDRESS[1] = 255;
-  NETMASK_ADDRESS[2] = 255;
-  NETMASK_ADDRESS[3] = 0;
-  GATEWAY_ADDRESS[0] = 192;
-  GATEWAY_ADDRESS[1] = 168;
-  GATEWAY_ADDRESS[2] = 8;
-  GATEWAY_ADDRESS[3] = 1;
-
+  ipaddr.addr = config_get()->ip;
+  netmask.addr = config_get()->netmask;
+  gw.addr = config_get()->gw;
   tcpip_init(NULL, NULL);
 
-  IP4_ADDR(&ipaddr, IP_ADDRESS[0], IP_ADDRESS[1], IP_ADDRESS[2], IP_ADDRESS[3]);
-  IP4_ADDR(&netmask, NETMASK_ADDRESS[0], NETMASK_ADDRESS[1], NETMASK_ADDRESS[2], NETMASK_ADDRESS[3]);
-  IP4_ADDR(&gw, GATEWAY_ADDRESS[0], GATEWAY_ADDRESS[1], GATEWAY_ADDRESS[2], GATEWAY_ADDRESS[3]);
-
   netif_add(&gnetif, &ipaddr, &netmask, &gw, NULL, &ethernetif_init, &tcpip_input);
 
   netif_set_default(&gnetif);
@@ -135,7 +119,7 @@ void MX_LWIP_Init(void)
   if (!netif_is_up(&gnetif)){
     netif_set_up(&gnetif);
     if (dhcp_start(&gnetif) == ERR_ARG){
-      NVIC_SystemReset(); /* 软复�? */
+      NVIC_SystemReset(); /* 软复位 */
     }
   }