diff --git a/app/build.gradle b/app/build.gradle
index 864c620..c7b181e 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -11,7 +11,7 @@ android {
         minSdk 28
         targetSdk 28
         versionCode 1
-        versionName "2.17"
+        versionName "2.18"
 
         // 1.0 IDATA广播模式处理
         // 1.1 霍尼韦尔的监听修改（扫描网站二维码跳出程序，监听失效，调整）、斑马PDA广播模式设置
@@ -53,6 +53,8 @@ android {
         // 2.15 添加文件选择和相机拍照功能
         // 2.16 暴露了一个直接调用相机的方法，非http input调用会出现默认的弹出窗口进行选择（相机、文件）
         // 2.17 支持原生相机，默认压缩；支持霍尼韦尔eda52服务扫描
+        // 2.18 瑞兴平板，rk3568_r，存在两个ttyS8、ttyS1，2G内存之前是ttyS8才可以接收，4G内存的ttyS8直接报错，导致打不开，需要缓存ttyS1，改成兼容模式
+        //      支持霍尼韦尔eda52服务扫描修改成广播模式，医院那边不要所谓的服务连续扫描
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
         ndk {
             abiFilters 'armeabi-v7a'
diff --git a/app/src/main/java/chaoran/business/activity/MainActivity.java b/app/src/main/java/chaoran/business/activity/MainActivity.java
index 0f1669b..276c127 100644
--- a/app/src/main/java/chaoran/business/activity/MainActivity.java
+++ b/app/src/main/java/chaoran/business/activity/MainActivity.java
@@ -167,7 +167,7 @@ public class MainActivity extends AppCompatActivity implements ResultListener{
                 if (
                         "eda50p".equals(Build.MODEL.toLowerCase())
                         || "eda51".equals(Build.MODEL.toLowerCase())
-                        || "eda52".equals(Build.MODEL.toLowerCase())
+//                        || "eda52".equals(Build.MODEL.toLowerCase()) // todo
                         || "tc26".equals(Build.MODEL.toLowerCase())
                 ) {
                     // 走服务模式
diff --git a/app/src/main/java/chaoran/business/adapter/RockChipAdapter.java b/app/src/main/java/chaoran/business/adapter/RockChipAdapter.java
index 64b1164..617cab5 100644
--- a/app/src/main/java/chaoran/business/adapter/RockChipAdapter.java
+++ b/app/src/main/java/chaoran/business/adapter/RockChipAdapter.java
@@ -46,7 +46,7 @@ public class RockChipAdapter implements Adapter {
         if (Build.MODEL.equalsIgnoreCase("rk3568_r")) {
             fileName = "/dev/ttyS8";
         }
-        this.strategy = new Reader(new File(fileName), 115200, 0);
+        this.strategy = new Reader(new File(fileName), 115200, 0, fileName);
     }
 
     public class Reader implements Strategy {
@@ -54,7 +54,7 @@ public class RockChipAdapter implements Adapter {
         private FileInputStream mFileInputStream;
         private boolean running = true;
 
-        public Reader(File device, int baudrate, int flags) {
+        public Reader(File device, int baudrate, int flags, String fileName) {
 
             if (!device.canRead() || !device.canWrite()) {
                 try {
@@ -73,6 +73,10 @@ public class RockChipAdapter implements Adapter {
             }
             mFd = open(device.getAbsolutePath(), baudrate, flags);
             if (mFd == null) {
+                if (!"/dev/ttyS1".equals(fileName)) {
+                    strategy = new Reader(new File("/dev/ttyS1"), 115200, 0, "/dev/ttyS1");
+                    return;
+                }
                 System.out.println("获取文件描述符失败！");
             }
             mFileInputStream = new FileInputStream(mFd);