diff --git a/pages/demo/demo.vue b/pages/demo/demo.vue
index 6b4352b..5f6ebc6 100644
--- a/pages/demo/demo.vue
+++ b/pages/demo/demo.vue
@@ -10,6 +10,7 @@
     <view v-else>
       <button @click="getPublicKey">获取锁公钥</button>
       <button @click="getCommKey">获取锁私钥</button>
+      <button @click="getLockStatus">获取锁状态</button>
     </view>
   </view>
 </template>
@@ -61,6 +62,92 @@ export default {
     })
   },
   methods: {
+    // 获取锁状态
+    getLockStatus() {
+      // 头部数据
+      let buffer = new ArrayBuffer(12)
+      let binaryData = new Uint8Array(buffer)
+
+      // 固定包头
+      binaryData[0] = 0xEF
+      binaryData[1] = 0x01
+      binaryData[2] = 0xEE
+      binaryData[3] = 0x02
+
+      // 包类型 发送
+      binaryData[4] = 0x01
+
+      // 包序号
+      binaryData[5] = this.number / 256
+      binaryData[6] = this.number % 256
+      this.number++
+
+      // 包标识
+      binaryData[7] = 0x23
+
+      // 数据长度
+      binaryData[8] = 80 / 256
+      binaryData[9] = 80 % 256
+      binaryData[10] = 70 / 256
+      binaryData[11] = 70 % 256
+
+      console.log('请求头', Array.from(binaryData))
+
+      // 入参
+      let paramsBuffer = new ArrayBuffer(70)
+      let paramsBinaryData = new Uint8Array(paramsBuffer)
+
+      // 命令
+      paramsBinaryData[0] = 0x3040 / 256
+      paramsBinaryData[1] = 0x3040 % 256
+
+      // 设备ID
+      for(let i=0; i < this.lockId.length; i++){
+        paramsBinaryData[2 + i] = this.lockId.charCodeAt(i)
+      }
+
+      // userId
+      const authUserId = '294'
+      for(let i=0; i < authUserId.length; i++){
+        paramsBinaryData[42 + i] = authUserId.charCodeAt(i)
+      }
+
+      const nowTime = parseInt(new Date().getTime() / 1000)
+
+      paramsBinaryData[62] = (nowTime & 0xff000000) >> 24
+      paramsBinaryData[62 + 1] = (nowTime & 0xff0000) >> 16
+      paramsBinaryData[62 + 2] = (nowTime & 0xff00) >> 8
+      paramsBinaryData[62 + 3] = (nowTime & 0xff)
+
+      paramsBinaryData[66] = (nowTime & 0xff000000) >> 24
+      paramsBinaryData[66 + 1] = (nowTime & 0xff0000) >> 16
+      paramsBinaryData[66 + 2] = (nowTime & 0xff00) >> 8
+      paramsBinaryData[66 + 3] = (nowTime & 0xff)
+
+      console.log('ecb加密前入参', Array.from(paramsBinaryData))
+      console.log('密钥', Array.from(this.commKey))
+      const encrypted = sm4.encrypt(paramsBinaryData, this.commKey, { mode: 'ecb', output: 'array' })
+      console.log('ecb加密后的数据', Array.from(encrypted))
+
+      let newBuffer = new ArrayBuffer(92)
+      let newBinaryData = new Uint8Array(newBuffer)
+      for(let i = 0; i < 12; i++){
+        newBinaryData[i] = binaryData[i]
+      }
+      for(let i = 12; i < 92; i++){
+        newBinaryData[i] = encrypted[i - 12]
+      }
+      console.log('crc前的数据', Array.from(newBinaryData))
+      let resultBuffer = new ArrayBuffer(94)
+      let resultBinaryData = new Uint8Array(resultBuffer)
+      for(let i = 0; i < 92; i++){
+        resultBinaryData[i] = newBinaryData[i]
+      }
+
+      resultBinaryData[92] = crc.crc16kermit(resultBuffer) / 256
+      resultBinaryData[93] = crc.crc16kermit(resultBuffer) % 256
+      this.writeBLECharacteristicValue(resultBuffer)
+    },
     // 十六进制字符串转Uint8Array
     hexToUint8Array(hex) {
       if (hex.length % 2 !== 0) {
@@ -74,7 +161,6 @@ export default {
     },
     // 获取私钥
     getCommKey() {
-      const cmdId = 0x3091
       const keyId = '0'
       const authUserId = '294'
       const nowTime = parseInt(new Date().getTime() / 1000)