diff --git a/iflytop_xsync.h b/iflytop_xsync.h
index 5f1f83e..624ce0c 100644
--- a/iflytop_xsync.h
+++ b/iflytop_xsync.h
@@ -10,6 +10,7 @@ extern "C" {
 #include "xs_gpio.h"
 #include "xs_log.h"
 #include "xs_id.h"
+#include "xs_device_info.h"
 #ifdef __cplusplus
 }
 #endif
\ No newline at end of file
diff --git a/xs_device_info.c b/xs_device_info.c
new file mode 100644
index 0000000..7eaafed
--- /dev/null
+++ b/xs_device_info.c
@@ -0,0 +1,17 @@
+#include "xs_device_info.h"
+
+#include <stdbool.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "xs_log.h"
+
+
+/*******************************************************************************
+ *                                   EXTERN                                    *
+ *******************************************************************************/
+
+xs_device_info_t* xs_device_info_get() {  //
+  xs_device_info_t* info = (xs_device_info_t*)DEVICE_INFO_START_ADD;
+  return info;
+}
\ No newline at end of file
diff --git a/xs_device_info.h b/xs_device_info.h
new file mode 100644
index 0000000..6348b40
--- /dev/null
+++ b/xs_device_info.h
@@ -0,0 +1,39 @@
+#pragma once
+#include <stdbool.h>
+
+#include "main.h"
+
+/**
+ * @brief
+ * STM32F407VETx 1024k
+ *
+ * index startAdd   size
+ * 0     0x08000000  16k
+ * 1     0x08004000  16k
+ * 2     0x08008000  16k
+ * 3     0x0800C000  16k
+ * 4     0x08010000  64k
+ * 5     0x08020000  128k
+ * 6     0x08040000  128k
+ * 7     0x08060000  128k
+ * 8     0x08080000  128k
+ * 9     0x080A0000  128k
+ * 10    0x080C0000  128k
+ * 11    0x080E0000  128k
+ *
+ *
+ * @WARNING:
+ *      1. 我们使用第7个扇区，即0x08060000~0x0807FFFF
+ *      2. 程序最大不能超过75%
+ *      3. rawstartadd第一位必须是0xABCD,最后一位是校验和
+ */
+
+#define DEVICE_INFO_START_ADD 0x080E0000  //
+
+typedef struct {
+  uint32_t year;
+  uint32_t weak;
+  uint32_t index;
+} xs_device_info_t;
+
+xs_device_info_t* xs_device_info_get();
diff --git a/xs_flash.h b/xs_flash.h
index 44efdd3..e08af76 100644
--- a/xs_flash.h
+++ b/xs_flash.h
@@ -5,7 +5,7 @@
 
 /**
  * @brief
- * STM32F407VETx 512k
+ * STM32F407VETx 1024k
  *
  * index startAdd   size
  * 0     0x08000000  16k
@@ -16,6 +16,10 @@
  * 5     0x08020000  128k
  * 6     0x08040000  128k
  * 7     0x08060000  128k
+ * 8     0x08080000  128k
+ * 9     0x080A0000  128k
+ * 10    0x080C0000  128k
+ * 11    0x080E0000  128k
  *
  *
  * @WARNING:
@@ -25,8 +29,8 @@
  */
 
 #define FLASH_MASK_VAL     0xABCD
-#define FLASH_START_ADD    0x08060000  //
-#define FLASH_EARSE_SECTOR FLASH_SECTOR_7
+#define FLASH_START_ADD    0x080C0000  //
+#define FLASH_EARSE_SECTOR FLASH_SECTOR_10
 
 /**
  * @brief 初始化flash