diff --git a/MDK-ARM/LWIP.uvguix.29643 b/MDK-ARM/LWIP.uvguix.29643
index 8e86005..9dff482 100644
--- a/MDK-ARM/LWIP.uvguix.29643
+++ b/MDK-ARM/LWIP.uvguix.29643
@@ -93,8 +93,8 @@
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-      <ActiveTab>2</ActiveTab>
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@@ -1890,6 +1890,24 @@
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+        <ColumnNumber>15</ColumnNumber>
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diff --git a/MDK-ARM/LWIP.uvoptx b/MDK-ARM/LWIP.uvoptx
index 83b7932..f39300b 100644
--- a/MDK-ARM/LWIP.uvoptx
+++ b/MDK-ARM/LWIP.uvoptx
@@ -400,6 +400,18 @@
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       <GroupNumber>8</GroupNumber>
-      <FileNumber>102</FileNumber>
+      <FileNumber>103</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -1474,7 +1486,7 @@
     </File>
     <File>
       <GroupNumber>8</GroupNumber>
-      <FileNumber>103</FileNumber>
+      <FileNumber>104</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -1486,7 +1498,7 @@
     </File>
     <File>
       <GroupNumber>8</GroupNumber>
-      <FileNumber>104</FileNumber>
+      <FileNumber>105</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -1498,7 +1510,7 @@
     </File>
     <File>
       <GroupNumber>8</GroupNumber>
-      <FileNumber>105</FileNumber>
+      <FileNumber>106</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -1510,7 +1522,7 @@
     </File>
     <File>
       <GroupNumber>8</GroupNumber>
-      <FileNumber>106</FileNumber>
+      <FileNumber>107</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -1522,7 +1534,7 @@
     </File>
     <File>
       <GroupNumber>8</GroupNumber>
-      <FileNumber>107</FileNumber>
+      <FileNumber>108</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -1534,7 +1546,7 @@
     </File>
     <File>
       <GroupNumber>8</GroupNumber>
-      <FileNumber>108</FileNumber>
+      <FileNumber>109</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -1546,7 +1558,7 @@
     </File>
     <File>
       <GroupNumber>8</GroupNumber>
-      <FileNumber>109</FileNumber>
+      <FileNumber>110</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -1558,7 +1570,7 @@
     </File>
     <File>
       <GroupNumber>8</GroupNumber>
-      <FileNumber>110</FileNumber>
+      <FileNumber>111</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -1570,7 +1582,7 @@
     </File>
     <File>
       <GroupNumber>8</GroupNumber>
-      <FileNumber>111</FileNumber>
+      <FileNumber>112</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -1582,7 +1594,7 @@
     </File>
     <File>
       <GroupNumber>8</GroupNumber>
-      <FileNumber>112</FileNumber>
+      <FileNumber>113</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -1594,7 +1606,7 @@
     </File>
     <File>
       <GroupNumber>8</GroupNumber>
-      <FileNumber>113</FileNumber>
+      <FileNumber>114</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -1606,7 +1618,7 @@
     </File>
     <File>
       <GroupNumber>8</GroupNumber>
-      <FileNumber>114</FileNumber>
+      <FileNumber>115</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -1618,7 +1630,7 @@
     </File>
     <File>
       <GroupNumber>8</GroupNumber>
-      <FileNumber>115</FileNumber>
+      <FileNumber>116</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -1630,7 +1642,7 @@
     </File>
     <File>
       <GroupNumber>8</GroupNumber>
-      <FileNumber>116</FileNumber>
+      <FileNumber>117</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -1642,7 +1654,7 @@
     </File>
     <File>
       <GroupNumber>8</GroupNumber>
-      <FileNumber>117</FileNumber>
+      <FileNumber>118</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -1654,7 +1666,7 @@
     </File>
     <File>
       <GroupNumber>8</GroupNumber>
-      <FileNumber>118</FileNumber>
+      <FileNumber>119</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -1666,7 +1678,7 @@
     </File>
     <File>
       <GroupNumber>8</GroupNumber>
-      <FileNumber>119</FileNumber>
+      <FileNumber>120</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -1678,7 +1690,7 @@
     </File>
     <File>
       <GroupNumber>8</GroupNumber>
-      <FileNumber>120</FileNumber>
+      <FileNumber>121</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -1690,7 +1702,7 @@
     </File>
     <File>
       <GroupNumber>8</GroupNumber>
-      <FileNumber>121</FileNumber>
+      <FileNumber>122</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -1702,7 +1714,7 @@
     </File>
     <File>
       <GroupNumber>8</GroupNumber>
-      <FileNumber>122</FileNumber>
+      <FileNumber>123</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -1714,7 +1726,7 @@
     </File>
     <File>
       <GroupNumber>8</GroupNumber>
-      <FileNumber>123</FileNumber>
+      <FileNumber>124</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -1726,7 +1738,7 @@
     </File>
     <File>
       <GroupNumber>8</GroupNumber>
-      <FileNumber>124</FileNumber>
+      <FileNumber>125</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -1738,7 +1750,7 @@
     </File>
     <File>
       <GroupNumber>8</GroupNumber>
-      <FileNumber>125</FileNumber>
+      <FileNumber>126</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -1750,7 +1762,7 @@
     </File>
     <File>
       <GroupNumber>8</GroupNumber>
-      <FileNumber>126</FileNumber>
+      <FileNumber>127</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
diff --git a/MDK-ARM/LWIP.uvprojx b/MDK-ARM/LWIP.uvprojx
index 6134b52..e6217d6 100644
--- a/MDK-ARM/LWIP.uvprojx
+++ b/MDK-ARM/LWIP.uvprojx
@@ -626,6 +626,11 @@
               <FileType>1</FileType>
               <FilePath>..\usersrc\zflash.c</FilePath>
             </File>
+            <File>
+              <FileName>config.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\usersrc\config.c</FilePath>
+            </File>
           </Files>
         </Group>
         <Group>
diff --git a/usersrc/config.c b/usersrc/config.c
new file mode 100644
index 0000000..e9866b9
--- /dev/null
+++ b/usersrc/config.c
@@ -0,0 +1,67 @@
+#include "config.h"
+
+#include <lwip/sockets.h>
+
+#include "lwip/api.h"
+#include "lwip/opt.h"
+#include "lwip/sys.h"
+#include "zflash.h"
+#include "zboard.h"
+
+#define CONFIG_SIZE ((sizeof(config_t) / 4) + ((sizeof(config_t) % 4) > 0 ? 1 : 0))
+
+static config_t s_config;
+
+static bool s_is_first_init = false;
+
+void config_init(void)
+{
+#if 1
+  IP4_ADDR((ip4_addr_t *)&s_config.ip, 192, 168, 8, 10);
+  IP4_ADDR((ip4_addr_t *)&s_config.gw, 192, 168, 8, 1);
+  IP4_ADDR((ip4_addr_t *)&s_config.netmask, 255, 255, 255, 0);
+  s_config.localport = SERVICE_PORT;
+  s_config.obtaining_ip_mode = OBTAINING_IP_MODE_DHCP; // dhcp
+  s_config.mask = 1;                                   //
+
+#endif
+  // if (stmflash_write(FLASH_START_ADDRESS, (uint32_t *)&s_config, CONFIG_SIZE) < 0)
+  // {
+  //   printf("flash write config error\r\n");
+  // }
+
+  // config_flash_read();
+
+  /*dumpconfig*/
+  config_dump_config();
+}
+bool config_is_first_init(void) { return s_is_first_init; }
+void config_dump_config(void)
+{
+  printf("=================config================\r\n");
+  printf("= config obtaining_ip_mode %u\r\n", s_config.obtaining_ip_mode);
+  printf("= config ip %s\r\n", inet_ntoa(s_config.ip));
+  printf("= config gw: %s\r\n", inet_ntoa(s_config.gw));
+  printf("= config netmask: %s\r\n", inet_ntoa(s_config.netmask));
+  printf("= config localport: %u\r\n", s_config.localport);
+}
+
+bool config_update(void)
+{
+  // if (stmflash_write(FLASH_SAVE_ADDR, (uint32_t *)&s_config, CONFIG_SIZE) < 0)
+  // {
+  //   printf("flash write config error\r\n");
+  //   return false;
+  // }
+
+  // config_dump_config();
+  return true;
+}
+
+void config_flash_read(void)
+{
+  //
+  // stmflash_read(FLASH_SAVE_ADDR, (uint32_t *)&s_config, CONFIG_SIZE);
+}
+
+config_t *config_get(void) { return &s_config; }
diff --git a/usersrc/config.h b/usersrc/config.h
new file mode 100644
index 0000000..415a428
--- /dev/null
+++ b/usersrc/config.h
@@ -0,0 +1,27 @@
+#pragma once
+#include <stdbool.h>
+#include <stdint.h>
+
+#define SERVICE_PORT 8880
+#define OBTAINING_IP_MODE_STATIC 0
+#define OBTAINING_IP_MODE_DHCP 1
+
+typedef struct
+{
+  uint32_t mask;
+  uint32_t obtaining_ip_mode;
+
+  uint32_t ip;
+  uint32_t gw;
+  uint32_t netmask;
+  uint32_t localport;
+
+  // uint32_t
+} config_t;
+
+void config_init(void);
+bool config_update(void);
+void config_dump_config(void);
+config_t *config_get(void);
+bool config_is_first_init(void);
+void config_flash_read(void);
diff --git a/usersrc/usermain.c b/usersrc/usermain.c
index 05b3796..110f5c1 100644
--- a/usersrc/usermain.c
+++ b/usersrc/usermain.c
@@ -12,15 +12,18 @@
 #include "encoder.h"
 #include "udpclient.h"
 #include "zflash.h"
+#include "config.h"
 
 HAL_StatusTypeDef flash_status;
 
 void user_main()
 {
-  encoder_start();
-  udp_client_init();
   printf("==============ethernet_sound_acquisition_card=============\r\n");
   printf("version %d.%d", VERSION_MAIN_ID, VERSION_SUB_ID);
+  
+  encoder_start();
+  udp_client_init();
+  config_init();
 
   flash_status = FlashErase();
   if (flash_status != HAL_OK)