lejos_NXJ_win32_0_6_0beta.zip

[nxt-jsp/lejos_nxj.git] / nxtOSEK / lejos_nxj / src / java / classes / lejos / nxt / comm / RConsole.java

diff --git a/nxtOSEK/lejos_nxj/src/java/classes/lejos/nxt/comm/RConsole.java b/nxtOSEK/lejos_nxj/src/java/classes/lejos/nxt/comm/RConsole.java
new file mode 100644 (file)
index 0000000..2f64dd3
--- /dev/null
+++ b/nxtOSEK/lejos_nxj/src/java/classes/lejos/nxt/comm/RConsole.java
@@ -0,0 +1,106 @@
+package lejos.nxt.comm;\r
+import lejos.nxt.*;\r
+import java.io.*;\r
+\r
+/**\r
+ * This class provides a simple way of sending output for viewing on a \r
+ * PC. The output is transmitted via the nxt USB connection or via Bluetooth.\r
+ * If open is not called or if the connection to the PC is timed out, then\r
+ * the output is dicarded.\r
+ */\r
+public class RConsole {\r
+       static PrintStream ps;\r
+    static NXTConnection conn;\r
+       \r
+       private static void init(NXTConnection c)\r
+       {\r
+        if (c == null)\r
+        {\r
+            LCD.drawString("No connection   ", 0, 0);\r
+            return;\r
+        }\r
+        conn = c;\r
+               try {\r
+            LCD.drawString("Got connection  ", 0, 0);\r
+            byte [] hello = new byte[32];\r
+            int len = conn.read(hello, hello.length);\r
+            if (len != 3 || hello[0] != 'C' || hello[1] != 'O' || hello[2] != 'N')\r
+            {\r
+                LCD.drawString("Console no h/s    ", 0, 0);\r
+                conn.close();\r
+                return;\r
+            }\r
+            LCD.drawString("Console open    ", 0, 0);\r
+            if (conn == null) return;\r
+            ps = new PrintStream(conn.openOutputStream());\r
+                       LCD.refresh();\r
+                       println("Console open");\r
+               }\r
+               catch (Exception e)\r
+               {\r
+                       LCD.drawString("Console error " + e.getMessage(), 0, 0);\r
+                       LCD.refresh();\r
+               }\r
+       }\r
+       \r
+       public static void openUSB(int timeout)\r
+       {\r
+        LCD.drawString("USB Console...  ", 0, 0);\r
+        init(USB.waitForConnection(timeout, 0));\r
+\r
+       }\r
+       \r
+    public static void open()\r
+    {\r
+        openUSB(0);\r
+    }\r
+    \r
+    public static void openBluetooth(int timeout)\r
+    {\r
+        LCD.drawString("BT Console...   ", 0, 0);\r
+        init(Bluetooth.waitForConnection(timeout, null));\r
+    }\r
+    \r
+       public static void print(String s)\r
+       {\r
+               if (ps == null) return;\r
+               synchronized (ps){\r
+            ps.print(s);\r
+            ps.flush();\r
+        }\r
+       }\r
+    \r
+    public static void println(String s)\r
+    {\r
+        if (ps == null) return;\r
+        synchronized(ps){\r
+            ps.println(s);\r
+        }\r
+    }\r
+       \r
+       public static void close()\r
+       {\r
+               if (conn == null) return;\r
+               try {\r
+            println("Console closed");\r
+            conn.close();\r
+                       LCD.drawString("Console closed  ", 0, 0);\r
+                       LCD.refresh();                  \r
+                       Thread.sleep(2000);\r
+               }\r
+               catch (Exception e)\r
+               {\r
+               }\r
+       }\r
+       \r
+       public static boolean isOpen() {\r
+               return (ps != null);\r
+       }\r
+    \r
+    public static OutputStream openOutputStream()\r
+    {\r
+        return (conn != null ? conn.openOutputStream() : null);\r
+    }\r
+}\r
+\r
+\r