diff --git a/README.md b/README.md
index 7f099ad..9a2cd19 100644
--- a/README.md
+++ b/README.md
@@ -2,13 +2,18 @@
 
 
 ```
-
-TimecodeInputModule_XXXXX      --> ExternalTimecode_XXXXX
-GenlockInputModule_XXXXX       --> ExternalGenlock_XXXXX
-XXXXFreq(uint32_t freq)        --> XXXXFreq(float freq)
-
-Xsync --> IXsync
-
-删除 connect,disconnect, 添加方法 changeXsyncIp
-
+V2
+    1. 时码输入模块修改方法前缀
+    TimecodeInputModule_XXXXX      --> ExternalTimecode_XXXXX
+    2. Genlock输入模块修改方法前缀
+    GenlockInputModule_XXXXX       --> ExternalGenlock_XXXXX
+    3. 所有读取频率的方法，方法参数由uint32_t 修改成float类型，频率精度为0.01HZ
+    XXXXFreq(uint32_t freq)        --> XXXXFreq(float freq)
+    4. 增加IXsync接口类，类的初始化流程修改成如下:
+      XsyncInit(XSyncUdpFactoryImpl::Ins(), "192.168.8.10"); 
+    5. 通过XsyncIns获取IXync句柄
+    6. 方法说明参考IXsync类中的注释
+    7. 删除 connect,disconnect, 添加方法changeXsyncIp
+    8. 测试阶段所有设备的SN码均为X1001000000000
+    9.
 ```
\ No newline at end of file
diff --git a/src/xsync_v2.cpp b/src/xsync_v2.cpp
index 220b4f0..7fde8c4 100644
--- a/src/xsync_v2.cpp
+++ b/src/xsync_v2.cpp
@@ -326,11 +326,20 @@ void Xsync::registerOnCameraSyncMsgCallback(xsync_on_camera_sync_msg_t cb) { m_o
 void Xsync::registerOnRecordSigChangeMsgCallback(xsync_on_record_sig_change_msg_t cb) { m_on_record_sig_change_msg_cb = cb; }
 
 xs_error_code_t Xsync::readSn(string &sn) {
-  sn = "";
+  sn = "X1001000000000";
   return kxs_ec_success;
 }
 xs_error_code_t Xsync::readMac(string &mac) {
-  mac = "";
+  // mac = "";
+  uint32_t mac0;
+  uint32_t mac1;
+
+  DO_XSYNC(reg_read(reg::kmac0, mac0));
+  DO_XSYNC(reg_read(reg::kmac1, mac1));
+
+  char buf[128] = {0};
+  sprintf(buf, "%02x-%02x-%02x-%02x-%02x-%02x", (mac0 >> 0) & 0xff, (mac0 >> 8) & 0xff, (mac0 >> 16) & 0xff, (mac0 >> 24) & 0xff, (mac1 >> 0) & 0xff, (mac1 >> 8) & 0xff);
+  mac = buf;
 
   return kxs_ec_success;
 }