diff --git a/serialport/build.gradle b/serialport/build.gradle
index 00b7ccd..14287d7 100644
--- a/serialport/build.gradle
+++ b/serialport/build.gradle
@@ -1 +1,20 @@
-YXBwbHkgcGx1Z2luOiAnY29tLmFuZHJvaWQubGlicmFyeScKCgphbmRyb2lkIHsKICAgIG5hbWVzcGFjZSAnY29tLmxlZC5jb250cm9sJwogICAgY29tcGlsZVNka1ZlcnNpb24gcm9vdFByb2plY3QuZXh0LmNvbXBpbGVTZGtWZXJzaW9uCgogICAgZGVmYXVsdENvbmZpZyB7CiAgICAgICAgbWluU2RrVmVyc2lvbiByb290UHJvamVjdC5leHQubWluU2RrVmVyc2lvbgogICAgICAgIHRhcmdldFNka1ZlcnNpb24gcm9vdFByb2plY3QuZXh0LnRhcmdldFNka1ZlcnNpb24KICAgICAgICB2ZXJzaW9uQ29kZSAxCiAgICAgICAgdmVyc2lvbk5hbWUgcm9vdFByb2plY3QuZXh0LnZlcnNpb25OYW1lCiAgICB9CiAgICBleHRlcm5hbE5hdGl2ZUJ1aWxkIHsKICAgICAgICBjbWFrZSB7IHBhdGggJ0NNYWtlTGlzdHMudHh0JyB9CiAgICB9Cn0KZGVwZW5kZW5jaWVzIHsKICAgIGFwaSAiYW5kcm9pZHguYW5ub3RhdGlvbjphbm5vdGF0aW9uOjEuMS4wIgp9
\ No newline at end of file
+apply plugin: 'com.android.library'
+
+
+android {
+    namespace 'com.led.control'
+    compileSdkVersion rootProject.ext.compileSdkVersion
+
+    defaultConfig {
+        minSdkVersion rootProject.ext.minSdkVersion
+        targetSdkVersion rootProject.ext.targetSdkVersion
+        versionCode 1
+        versionName rootProject.ext.versionName
+    }
+    externalNativeBuild {
+        cmake { path 'CMakeLists.txt' }
+    }
+}
+dependencies {
+    api "androidx.annotation:annotation:1.1.0"
+}
\ No newline at end of file