diff --git a/src/config.c b/src/config.c
index fb5be65..ea278c0 100644
--- a/src/config.c
+++ b/src/config.c
@@ -1,10 +1,11 @@
 #include "config.h"
 
-#include "../iflytop_microcontroller/sdk/stm32/stm32sdk.h"
 #include <lwip/sockets.h>
+
+#include "../iflytop_microcontroller/sdk/stm32/stm32sdk.h"
+#include "lwip/api.h"
 #include "lwip/opt.h"
 #include "lwip/sys.h"
-#include "lwip/api.h"
 #include "protocol.h"
 #include "src/zflash.h"
 #include "zboard.h"
@@ -27,6 +28,12 @@ typedef uint32_t u32;
 typedef int64_t i64;
 typedef uint64_t u64;
 
+const uint8_t g_text_buf[] = {"STM32 FLASH TEST"};
+#define TEXT_LENTH sizeof(g_text_buf) /* 数组长度 */
+#define SIZE TEXT_LENTH / 4 + ((TEXT_LENTH % 4) ? 1 : 0)
+#define FLASH_SAVE_ADDR \
+  0x08010000 /* 设置FLASH 保存地址(必须为4的整数倍，且其值要大于本代码所占用FLASH的大小 + 0X08000000) */
+
 // #define INIT_CONFIG(type, name, markname)                                      \
 //   type name = 0;                                                               \
 //   err = nvs_get_##type(s_nvs_handle, markname, &name);                         \
@@ -58,6 +65,7 @@ typedef uint64_t u64;
 //   }
 
 void config_init() {
+  uint8_t g_text_rx_buf[100];
 #if 1
   IP4_ADDR((ip4_addr_t *)&s_config.ip, 192, 168, 1, 10);
   IP4_ADDR((ip4_addr_t *)&s_config.gw, 192, 168, 1, 1);
@@ -67,8 +75,13 @@ void config_init() {
   s_config.mask = 1;                                    //
 
 #endif
+  stmflash_write(FLASH_SAVE_ADDR, (uint32_t *)g_text_buf, SIZE);
+  stmflash_read(FLASH_SAVE_ADDR, (uint32_t *)g_text_rx_buf, SIZE);
+  printf("%s\r\n", g_text_rx_buf);
 
-  // stmflash_write_config(STM32_FLASH_BASE, &s_config, flash_write_lenght(config_t));
+  // if (stmflash_write_config(STM32_FLASH_BASE, &s_config, flash_write_lenght(config_t)) < 0) {
+  //   ZLOGE(TAG, "flash write config error\r\n");
+  // }
 
   // esp_err_t err = nvs_flash_init();
 
diff --git a/src/zflash.c b/src/zflash.c
index bc91fef..78963f7 100644
--- a/src/zflash.c
+++ b/src/zflash.c
@@ -76,41 +76,39 @@ uint8_t stmflash_get_flash_sector(uint32_t addr) {
  * @param       length  : 要写入的 字(32位)数(就是要写入的32位数据的个数)
  * @retval      无
  */
-void stmflash_write(uint32_t start_address, uint32_t *pbuf, uint32_t length) {
+void stmflash_write(uint32_t waddr, uint32_t *pbuf, uint32_t length) {
   FLASH_EraseInitTypeDef flasheraseinit;
   HAL_StatusTypeDef FlashStatus = HAL_OK;
 
-  uint32_t flash_write_start_address = 0;
-  uint32_t flash_write_end_address = 0;
+  uint32_t addrx = 0;
+  uint32_t endaddr = 0;
   uint32_t sectorerror = 0;
 
-  flash_write_start_address = start_address;            /* 写入的起始地址 */
-  flash_write_end_address = start_address + length * 4; /* 写入的结束地址 */
+  addrx = waddr;                /* 写入的起始地址 */
+  endaddr = waddr + length * 4; /* 写入的结束地址 */
 
-  if (!stmflash_address_legal(flash_write_start_address, flash_write_end_address)) {
-    return;
-  }
+  stmflash_address_legal(addrx, endaddr);
 
   HAL_FLASH_Unlock();       /* 解锁 */
   FLASH->ACR &= ~(1 << 10); /* FLASH擦除期间,必须禁止数据缓存!!! */
 
-  if (flash_write_start_address < 0X1FFF0000) /* 只有主存储区,才需要执行擦除操作!! */
+  if (addrx < 0X1FFF0000) /* 只有主存储区,才需要执行擦除操作!! */
   {
-    while (flash_write_start_address < flash_write_end_address) /* 扫清一切障碍.(对非FFFFFFFF的地方,先擦除) */
+    while (addrx < endaddr) /* 扫清一切障碍.(对非FFFFFFFF的地方,先擦除) */
     {
-      if (stmflash_read_word(flash_write_start_address) != 0XFFFFFFFF) /* 有非0XFFFFFFFF的地方,要擦除这个扇区 */
+      if (stmflash_read_word(addrx) != 0XFFFFFFFF) /* 有非0XFFFFFFFF的地方,要擦除这个扇区 */
       {
-        flasheraseinit.TypeErase = FLASH_TYPEERASE_SECTORS;                           /* 擦除类型，扇区擦除 */
-        flasheraseinit.Sector = stmflash_get_flash_sector(flash_write_start_address); /* 要擦除的扇区 */
-        flasheraseinit.NbSectors = 1;                                                 /* 一次只擦除一个扇区 */
-        flasheraseinit.VoltageRange = FLASH_VOLTAGE_RANGE_3; /* 电压范围，VCC=2.7~3.6V之间!! */
+        flasheraseinit.TypeErase = FLASH_TYPEERASE_SECTORS;       /* 擦除类型，扇区擦除 */
+        flasheraseinit.Sector = stmflash_get_flash_sector(addrx); /* 要擦除的扇区 */
+        flasheraseinit.NbSectors = 1;                             /* 一次只擦除一个扇区 */
+        flasheraseinit.VoltageRange = FLASH_VOLTAGE_RANGE_3;      /* 电压范围，VCC=2.7~3.6V之间!! */
 
         if (HAL_FLASHEx_Erase(&flasheraseinit, &sectorerror) != HAL_OK) {
           break; /* 发生错误了 */
         }
 
       } else {
-        flash_write_start_address += 4;
+        addrx += 4;
       }
       FLASH_WaitForLastOperation(FLASH_WAITETIME); /* 等待上次操作完成 */
     }
@@ -119,14 +117,14 @@ void stmflash_write(uint32_t start_address, uint32_t *pbuf, uint32_t length) {
   FlashStatus = FLASH_WaitForLastOperation(FLASH_WAITETIME); /* 等待上次操作完成 */
 
   if (FlashStatus == HAL_OK) {
-    while (start_address < flash_write_end_address) /* 写数据 */
+    while (waddr < endaddr) /* 写数据 */
     {
-      if (HAL_FLASH_Program(FLASH_TYPEPROGRAM_WORD, start_address, *pbuf) != HAL_OK) /* 写入数据 */
+      if (HAL_FLASH_Program(FLASH_TYPEPROGRAM_WORD, waddr, *pbuf) != HAL_OK) /* 写入数据 */
       {
         break; /* 写入异常 */
       }
 
-      start_address += 4;
+      waddr += 4;
       pbuf++;
     }
   }
@@ -171,16 +169,20 @@ int8_t stmflash_write_config(uint32_t start_address, config_t *config, uint32_t
   uint32_t flash_write_end_address = 0;
   uint32_t sectorerror = 0;
 
-  flash_write_start_address = start_address;            /* 写入的起始地址 */
-  flash_write_end_address = start_address + length * 4; /* 写入的结束地址 */
-
-  if (!stmflash_address_legal(flash_write_start_address, flash_write_end_address)) {
+  if (start_address < STM32_FLASH_BASE ||
+      start_address % 4 || /* 写入地址小于 STM32_FLASH_BASE, 或不是4的整数倍, 非法. */
+      start_address >
+          (STM32_FLASH_BASE + STM32_FLASH_SIZE)) /* 写入地址大于 STM32_FLASH_BASE + STM32_FLASH_SIZE, 非法. */
+  {
     return -1;
   }
 
   HAL_FLASH_Unlock();       /* 解锁 */
   FLASH->ACR &= ~(1 << 10); /* FLASH擦除期间,必须禁止数据缓存!!! */
 
+  flash_write_start_address = start_address;            /* 写入的起始地址 */
+  flash_write_end_address = start_address + length * 4; /* 写入的结束地址 */
+
   if (flash_write_start_address < 0X1FFF0000) /* 只有主存储区,才需要执行擦除操作!! */
   {
     while (flash_write_start_address < flash_write_end_address) /* 扫清一切障碍.(对非FFFFFFFF的地方,先擦除) */
@@ -206,16 +208,16 @@ int8_t stmflash_write_config(uint32_t start_address, config_t *config, uint32_t
   FlashStatus = FLASH_WaitForLastOperation(FLASH_WAITETIME); /* 等待上次操作完成 */
 
   if (FlashStatus == HAL_OK) {
-    ZFLASH_WRITE_DATA(&start_address, config->ip) { return -1; }
-    END();
-    ZFLASH_WRITE_DATA(&start_address, config->gw) { return -2; }
-    END();
-    ZFLASH_WRITE_DATA(&start_address, config->netmask) { return -3; }
-    END();
-    ZFLASH_WRITE_DATA(&start_address, config->localport) { return -4; }
-    END();
-    ZFLASH_WRITE_DATA(&start_address, config->obtaining_ip_mode) { return -5; }
-    END();
+    // ZFLASH_WRITE_DATA(&start_address, config->ip) { return -1; }
+    // END();
+    // ZFLASH_WRITE_DATA(&start_address, config->gw) { return -2; }
+    // END();
+    // ZFLASH_WRITE_DATA(&start_address, config->netmask) { return -3; }
+    // END();
+    // ZFLASH_WRITE_DATA(&start_address, config->localport) { return -4; }
+    // END();
+    // ZFLASH_WRITE_DATA(&start_address, config->obtaining_ip_mode) { return -5; }
+    // END();
   }
 
   FLASH->ACR |= 1 << 10; /* FLASH擦除结束,开启数据fetch */