串口数据处理

app/build.gradle.kts

@@ -5,7 +5,7 @@ plugins {
 
 android {
     namespace = "com.shuwei.intelligent.shelves"
-    compileSdk = 36
+    compileSdk = 34
 
     defaultConfig {
         applicationId = "com.shuwei.intelligent.shelves"

app/src/main/java/com/shuwei/intelligent/shelves/HomeActivity.kt

@@ -68,10 +68,16 @@ class HomeActivity : BaseActivity() {
                 SerialPortManager.startReceive { data ->
                     runOnUiThread {
                         // 更新UI显示接收数据
-                        receiveSerialPortData(data)
+                        runCatching {
+                            receiveSerialPortData(data)
+                        }.onFailure {
+                                it.printStackTrace()
+                            }
                     }
                 }
                 SerialPortManager.send(ACTIVE_CMD)
+
+                SerialPortManager.send(DEVICE_INFO_CMD)
             }
         }
         TaskManager.startTask()
@@ -117,6 +123,7 @@ class HomeActivity : BaseActivity() {
 
                 val intent = Intent(ShelfActivity.RECEIVER_DEVICE_INFO)
                 intent.putExtra(ShelfActivity.SHELF_WEIGHT, weightArray[clickIndex])
+                 intent.putExtra(ShelfActivity.RECEIVER_DEVICE_INFO, data)
                 sendBroadcast(intent)
             }
 

app/src/main/java/com/shuwei/intelligent/shelves/ShelfActivity.kt

@@ -9,6 +9,7 @@ import android.os.Build
 import android.os.Bundle
 import android.os.Handler
 import android.os.Looper
+import android.util.Log
 import androidx.annotation.RequiresApi
 import androidx.lifecycle.lifecycleScope
 import androidx.recyclerview.widget.GridLayoutManager
@@ -37,6 +38,7 @@ import kotlin.random.Random
 class ShelfActivity : BaseActivity() {
 
     companion object {
+        private const val TAG = "ShelfActivity"
         const val SHELF_MODEL = "shelfModel"
         const val RECEIVER_DEVICE_INFO = "receiverDeviceInfo"
         const val SHELF_WEIGHT = "shelfWeight"
@@ -119,6 +121,8 @@ class ShelfActivity : BaseActivity() {
     private val receiver = object : BroadcastReceiver() {
         override fun onReceive(context: Context?, intent: Intent?) {
             intent?.let {
+                val data = it.getStringExtra(RECEIVER_DEVICE_INFO)
+                Log.d(TAG, "onReceive: $data")
                 realWeight = it.getIntExtra(SHELF_WEIGHT, 0)
                 binding.tvFoodWeight.text = "${realWeight}克"
             }

app/src/main/java/com/shuwei/intelligent/shelves/serial/SerialPortManager.kt

@@ -1,9 +1,13 @@
 package com.shuwei.intelligent.shelves.serial
 
+import com.shuwei.intelligent.shelves.utils.hexToBytes
+import com.shuwei.intelligent.shelves.utils.toHexString2
 import io.github.jeadyx.jserialport.AndroidSerialPort
 import io.github.jeadyx.jserialport.SerialPort
 import io.github.jeadyx.jserialport.SerialPortFactory
 import kotlinx.coroutines.*
+import java.nio.charset.Charset
+import java.util.Locale
 
 object SerialPortManager {
     private const val portName: String = "/dev/ttyS1"
@@ -34,7 +38,8 @@ object SerialPortManager {
     // 发送数据
     suspend fun send(data: String): Boolean {
         return try {
-            serialPort?.write(data.toByteArray())
+//            serialPort?.write(data.toByteArray())
+            serialPort?.write(data.hexToBytes())
             true
         } catch (e: Exception) {
             e.printStackTrace()
@@ -47,7 +52,9 @@ object SerialPortManager {
         scope.launch {
             while (isActive) {
                 serialPort?.read()?.collect { buffer ->
-                    callback(String(buffer))
+//                    val data = String(buffer)
+                    val data = buffer.toHexString2().toUpperCase()
+                    callback(data)
                 }
                 delay(50)
             }

app/src/main/java/com/shuwei/intelligent/shelves/utils/DecToHex.kt

@@ -28,3 +28,20 @@ fun hexToDec(hex: String): Int {
 
     return result
 }
+
+
+fun hexStringToByteArray(hex: String): ByteArray {
+    require(hex.length % 2 == 0) { "Hex string must have even length" }
+    return hex.chunked(2)
+        .map { it.toInt(16).toByte() }
+        .toByteArray()
+}
+
+fun byteArrayToHexString(bytes: ByteArray): String {
+    return bytes.joinToString("") { "%02x".format(it) }
+}
+
+// 扩展函数版本
+fun String.hexToBytes(): ByteArray = hexStringToByteArray(this)
+fun ByteArray.toHexString2(): String = byteArrayToHexString(this)
+

app/src/main/java/com/shuwei/intelligent/shelves/utils/UIUtils.kt

@@ -2,7 +2,7 @@ package com.shuwei.intelligent.shelves.utils
 
 import android.widget.Toast
 import com.shuwei.intelligent.shelves.App
-
+//D6DADEDB0302000001000C06
 object UIUtils {
     fun toast(strRes: Int) {
         Toast.makeText(App.get(), strRes, Toast.LENGTH_SHORT).show()