update，flash

usersrc/atcmd.c

@@ -25,7 +25,7 @@ extern ETH_HandleTypeDef heth;
             ip_address[len] = 0; /* 这个必须要加，否则转换会出错 */ \
             inet_aton(ip_address, &int_addr);                                     \
             _config_get = int_addr.addr;                                          \
-            config_dump_config();                                                 \
+            config_flash_write();                                                 \
             printf("AT+OK\r\n");                                                  \
         }                                                                         \
         return AT_SUCCESS;                                                        \
@@ -119,7 +119,7 @@ AT_STATUS at_cmd_obtaining_ip_mode(unsigned char *p, unsigned char len)
             return AT_ERR;
         }
         config_get()->obtaining_ip_mode = *p - 48; /* ascii码字符0十进制为48 */
-        config_dump_config();
+        config_flash_write();
         printf("AT+OK\r\n");
     }
     return AT_SUCCESS;

usersrc/config.c

@@ -22,30 +22,35 @@
   config_flash_write_start_address += 4;
 
 #define CONFIG_SIZE ((sizeof(config_t) / 4) + ((sizeof(config_t) % 4) > 0 ? 1 : 0))
+#define COINFIG_WRITED_FLAG 0X88888888
 
 static config_t s_config;
 static bool s_is_first_init = false;
 
 void config_init(void)
 {
-  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;                                   //
-
-  if (config_flash_write() < 0)
-  {
-    printf("flash write config error\r\n");
-  }
-  else
+  config_flash_read();
+
+  if (s_config.config_writed_flag != COINFIG_WRITED_FLAG)
   {
-    printf("flash write config success\r\n");
+    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;                                   //
+    s_config.config_writed_flag = COINFIG_WRITED_FLAG;
+
+    if (config_flash_write() < 0)
+    {
+      printf("flash write config error\r\n");
+    }
+    else
+    {
+      printf("flash write config success\r\n");
+    }
   }
 
-  config_flash_read();
-
   /*dumpconfig*/
   config_dump_config();
 }
@@ -72,6 +77,7 @@ void config_flash_read(void)
   FLASH_READ(s_config.gw);
   FLASH_READ(s_config.netmask);
   FLASH_READ(s_config.localport);
+  FLASH_READ(s_config.config_writed_flag);
 }
 
 config_t *config_get(void) { return &s_config; }
@@ -93,6 +99,7 @@ int8_t config_flash_write(void)
   FLASH_WRITE(s_config.gw);
   FLASH_WRITE(s_config.netmask);
   FLASH_WRITE(s_config.localport);
+  FLASH_WRITE(s_config.config_writed_flag);
 
   return 0;
 }

usersrc/config.h

@@ -16,6 +16,8 @@ typedef struct
   uint32_t netmask;
   uint32_t localport;
 
+  uint32_t config_writed_flag;
+
   // uint32_t
 } config_t;