From cd9cb59bec502e2f027f33f9fac404da5a7c9398 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Norbert=20S=C3=A1ndor?= <sandor.norbert@erinors.com>
Date: Tue, 1 Sep 2020 21:04:50 +0200
Subject: [PATCH] #41: +JSerialCommTransport

---
 pom.xml                                       |   6 +
 .../transport/JSerialCommTransport.java       | 103 ++++++++++++++++++
 2 files changed, 109 insertions(+)
 create mode 100644 src/main/java/org/firmata4j/transport/JSerialCommTransport.java

diff --git a/pom.xml b/pom.xml
index 239b372..cddfc85 100644
--- a/pom.xml
+++ b/pom.xml
@@ -42,6 +42,12 @@
             <artifactId>jssc</artifactId>
             <version>${jssc.version}</version>
         </dependency>
+        <dependency>
+            <groupId>com.fazecast</groupId>
+            <artifactId>jSerialComm</artifactId>
+            <version>2.6.2</version>
+            <optional>true</optional>
+        </dependency>
         
         <dependency>
             <groupId>org.slf4j</groupId>
diff --git a/src/main/java/org/firmata4j/transport/JSerialCommTransport.java b/src/main/java/org/firmata4j/transport/JSerialCommTransport.java
new file mode 100644
index 0000000..b32b288
--- /dev/null
+++ b/src/main/java/org/firmata4j/transport/JSerialCommTransport.java
@@ -0,0 +1,103 @@
+/* 
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014-2019 Oleg Kurbatov (o.v.kurbatov@gmail.com)
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+package org.firmata4j.transport;
+
+import java.io.IOException;
+
+import org.firmata4j.Parser;
+
+import com.fazecast.jSerialComm.SerialPort;
+import com.fazecast.jSerialComm.SerialPortDataListener;
+import com.fazecast.jSerialComm.SerialPortEvent;
+
+/**
+ * Implementation of {@link TransportInterface} based on {@link SerialPort}.
+ * 
+ * @author Norbert Sándor
+ */
+public class JSerialCommTransport implements TransportInterface
+{
+    private final SerialPort serialPort;
+
+    private Parser parser;
+
+    public JSerialCommTransport(String portDescriptor)
+    {
+        serialPort = SerialPort.getCommPort(portDescriptor);
+    }
+
+    @Override
+    public void start() throws IOException
+    {
+        if (!serialPort.isOpen())
+        {
+            if (serialPort.openPort())
+            {
+                serialPort.setComPortParameters(jssc.SerialPort.BAUDRATE_57600, jssc.SerialPort.DATABITS_8,
+                        SerialPort.ONE_STOP_BIT, SerialPort.NO_PARITY);
+                serialPort.addDataListener(new SerialPortDataListener()
+                {
+                    @Override
+                    public void serialEvent(SerialPortEvent event)
+                    {
+                        if (event.getEventType() == SerialPort.LISTENING_EVENT_DATA_RECEIVED)
+                        {
+                            parser.parse(event.getReceivedData());
+                        }
+                    }
+
+                    @Override
+                    public int getListeningEvents()
+                    {
+                        return SerialPort.LISTENING_EVENT_DATA_RECEIVED;
+                    }
+                });
+            } else
+            {
+                throw new IOException("Cannot start firmata device: port=" + serialPort);
+            }
+        }
+    }
+
+    @Override
+    public void stop() throws IOException
+    {
+        if (serialPort.isOpen() && !serialPort.closePort())
+        {
+            throw new IOException("Cannot properly stop firmata device: port=" + serialPort);
+        }
+    }
+
+    @Override
+    public void write(byte[] bytes) throws IOException
+    {
+        serialPort.writeBytes(bytes, bytes.length);
+    }
+
+    @Override
+    public void setParser(Parser parser)
+    {
+        this.parser = parser;
+    }
+}