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feat: added support for wireless communication using ESP01
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88 changes: 88 additions & 0 deletions
88
app/src/main/java/io/pslab/communication/SocketClient.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,88 @@ | ||
| package io.pslab.communication; | ||
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| import android.util.Log; | ||
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| import java.io.IOException; | ||
| import java.io.InputStream; | ||
| import java.io.OutputStream; | ||
| import java.net.Socket; | ||
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| public class SocketClient { | ||
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| public static final String TAG = "SocketClient"; | ||
| private static SocketClient socketClient = null; | ||
| private Socket socket; | ||
| private OutputStream outputStream; | ||
| private InputStream inputStream; | ||
| private boolean isConnected = false; | ||
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| public static final int DEFAULT_READ_BUFFER_SIZE = 32 * 1024; | ||
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| private byte[] buffer = new byte[DEFAULT_READ_BUFFER_SIZE]; | ||
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| private byte[] receivedData; | ||
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| private SocketClient() { | ||
| } | ||
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| public void openConnection(String ip, int port) throws IOException { | ||
| socket = new Socket(ip, port); | ||
| outputStream = socket.getOutputStream(); | ||
| inputStream = socket.getInputStream(); | ||
| if (!socket.isConnected()) { | ||
| isConnected = false; | ||
| return; | ||
| } | ||
| isConnected = true; | ||
| } | ||
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| public static SocketClient getInstance() { | ||
| if (socketClient == null) { | ||
| socketClient = new SocketClient(); | ||
| } | ||
| return socketClient; | ||
| } | ||
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| public boolean isConnected() { | ||
| return isConnected; | ||
| } | ||
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| public void write(byte[] data) throws IOException { | ||
| if (isConnected && socketClient.isConnected && outputStream != null) { | ||
| outputStream.write(data); | ||
| } | ||
| } | ||
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| public int read(int bytesToRead) throws IOException { | ||
| int bytesRead = 0; | ||
| if (isConnected && socketClient.isConnected && inputStream != null) { | ||
| bytesRead = inputStream.read(buffer, 0, bytesToRead); | ||
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| if (bytesRead > 0) { | ||
| receivedData = new byte[bytesRead]; | ||
| System.arraycopy(buffer, 0, receivedData, 0, bytesRead); | ||
| } else { | ||
| Log.e(TAG, "Read Error: " + bytesToRead); | ||
| return bytesRead; | ||
| } | ||
| } | ||
| return bytesRead; | ||
| } | ||
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| public byte[] getReceivedData() { | ||
| return receivedData; | ||
| } | ||
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| public void closeConnection() { | ||
| try { | ||
| if (isConnected) { | ||
| inputStream.close(); | ||
| outputStream.close(); | ||
| socket.close(); | ||
| isConnected = false; | ||
| } | ||
| } catch (Exception e) { | ||
| e.printStackTrace(); | ||
| } | ||
| } | ||
| } |
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