diff --git a/basic/sn.c b/basic/sn.c
new file mode 100644
index 0000000..f35ce36
--- /dev/null
+++ b/basic/sn.c
@@ -0,0 +1,40 @@
+#include "sn.h"
+
+#include <stdbool.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+
+/*******************************************************************************
+ *                                   EXTERN                                    *
+ *******************************************************************************/
+
+static sn_t m_sn;
+
+sn_t* xs_device_info_get() {  //
+  sn_t* info = (sn_t*)DEVICE_INFO_START_ADD;
+  m_sn       = *info;
+
+  if (m_sn.year < 0) {
+    m_sn.year = 0;
+  }
+
+  if (m_sn.weak < 0) {
+    m_sn.weak = 0;
+  }
+
+  if (m_sn.index < 0) {
+    m_sn.index = 0;
+  }
+
+  return &m_sn;
+}
+
+const char* sn_get_str() {
+  sn_t*       info = xs_device_info_get();
+  static char sn_str[32];
+
+
+  sprintf(sn_str, "%s%02ld%02ld%04ld", "SN", info->year, info->weak, info->index);
+  return sn_str;
+}
diff --git a/basic/sn.h b/basic/sn.h
new file mode 100644
index 0000000..c6c4b86
--- /dev/null
+++ b/basic/sn.h
@@ -0,0 +1,41 @@
+#pragma once
+#include <stdbool.h>
+#include <stdint.h>
+
+#include "main.h"
+#include "project_configs.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:
+ */
+
+#define DEVICE_INFO_START_ADD SDK_CFG__SN_FLASH_ADDR  //
+
+#pragma pack(1)
+typedef struct {
+  uint8_t  year;
+  uint8_t  weak;
+  uint16_t index;
+} sn_t;
+#pragma pack()
+
+sn_t*       sn_get();
+const char* sn_get_str();
diff --git a/basic/zgpio.c b/basic/zgpio.c
index e4ba924..cb2e8a1 100644
--- a/basic/zgpio.c
+++ b/basic/zgpio.c
@@ -2,6 +2,7 @@
 
 #include "zdelay.h"
 #include "zlog.h"
+#include "project_configs.h"
 
 static bool gpio_enable_clock(GPIO_TypeDef *m_gpio) {
 #ifdef GPIOA
diff --git a/basic/zlog.c b/basic/zlog.c
index 3ae27dc..3f0499e 100644
--- a/basic/zlog.c
+++ b/basic/zlog.c
@@ -1,5 +1,6 @@
 #include "zlog.h"
 #include "zbase.h"
+#include "project_configs.h"
 
 bool                      g_xs_enable_log = true;
 extern UART_HandleTypeDef DEBUG_UART;
diff --git a/zbasic.h b/zbasic.h
index 1582583..2207b12 100644
--- a/zbasic.h
+++ b/zbasic.h
@@ -9,6 +9,7 @@ extern "C" {
 #include "basic/zflash.h"
 #include "basic/zgpio.h"
 #include "basic/zlog.h"
+#include "basic/sn.h"
 
 #include "cmsis_version.h"
 #include "cmsis_os.h"