First quick attempt at a demo for the stampdock software of http://stampdock.com/ it demonstrates how to use the stampdock software from an mbed

Dependencies:   mbed

Revision:
0:f032bf4440c4
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Tue Nov 02 15:29:20 2010 +0000
@@ -0,0 +1,1012 @@
+
+
+// mbed demo program (needs stampdock software)
+// by apspijkerman ap@apsdev.com
+
+
+#include "mbed.h"
+
+//Serial pc(USBTX, USBRX); // tx, rx
+Serial serial(USBTX, USBRX); // tx, rx     default 9600 8N1
+
+AnalogIn xa(p15);
+AnalogIn ya(p16);
+
+DigitalOut myled1(LED1);
+DigitalOut myled2(LED2);
+DigitalOut myled3(LED3);
+DigitalOut myled4(LED4);
+
+
+void SetLed(int led, int mode)
+{
+   if (led == 0) myled1 = mode;
+   if (led == 1) myled2 = mode;
+   if (led == 2) myled3 = mode;
+   if (led == 3) myled4 = mode;
+}
+
+void Blink(int led)
+{
+   if (led == 0) myled1 = 1;
+   if (led == 1) myled2 = 1;
+   if (led == 2) myled3 = 1;
+   if (led == 3) myled4 = 1;
+   wait(0.1);
+   if (led == 0) myled1 = 0;
+   if (led == 1) myled2 = 0;
+   if (led == 2) myled3 = 0;
+   if (led == 3) myled4 = 0;   
+}
+
+void SetLeds(void)
+{
+   int t;
+
+// flash all leds
+/*
+   for (t = 0; t < 4; t++){
+      SetLed(t, 1);
+   }
+   wait(1);
+   for (t = 0; t < 4; t++){
+      SetLed(t, 0);
+   }   
+*/
+// kitt led test
+   for (t = 0; t < 4; t++){
+      SetLed(t, 1);
+      wait(0.2);
+      SetLed(t, 0);
+   }
+}
+
+void ToggleLed(int led)
+{
+   if (led == 0) myled1 = !myled1;
+   if (led == 1) myled2 = !myled2;
+   if (led == 2) myled3 = !myled3;
+   if (led == 3) myled4 = !myled4;
+   wait(0.25);
+}
+
+//public class demo {
+
+  // seems we need to write commands in one go, so have a buffer
+  //static StringBuffer buf = new StringBuffer(128);
+
+  // check if the system has events for us
+  // if value greater then zero then thats the ID number of
+  // the gui element or the event number
+
+
+void InitStampdock(void)
+{
+//   serial.begin( 9600 );
+//   serial.baud(19200);
+//   serial.format(8,None,1);
+   SetLeds();
+
+}
+
+
+  static int GetEvent()
+  {
+      int e = 0, ready = 0, cnt = 0;
+      char v;
+      //  DEBUG "?Q;"     'query for events .. also sync with PC
+      //  SERIN 16, Baud, [x]             '16468
+      //  PAUSE 1   ' millisecs .. let serial bus settle
+
+      //serial.printf("\n");      // test .. purge buffer ?
+      serial.printf("?Q;");     // query for event
+      //wait(0.11);   //CPU.delay(1);        // ??
+      do{
+      if (serial.readable()){
+         //v = Serial.read();
+         v = serial.getc();
+
+         e = v;
+         if (e < 0) e += 256;      // signed char to int ?
+
+         //e = (255-v) + 1;   // 2's complement
+
+         //serial.printf("EVENT:");
+         //serial.printf(e);
+         //serial.printf("<-");
+         ready = 1;
+      }else{
+         //serial.printf("no event");
+         wait(0.0001);
+         cnt++;
+         if (cnt == 1000) ready = 1;
+         Blink(0);
+      }
+      }while(!ready);
+      //CPU.delay(10);
+
+      // .. flush out of sync events ..
+      //while (serial.readable()){
+      if (serial.readable()){
+         // Serial.read();
+         serial.getc();
+         Blink(1);
+      }
+
+      if (serial.readable()){
+         // Serial.read();
+         serial.getc();
+         Blink(2);
+      }
+      
+      return e;
+  }
+
+  // request the state of GUI element i
+
+  static int GetValue(int i)
+  {
+      int e = 0, ready = 0, cnt = 0;
+      char v;
+      //StringBuffer buf=new StringBuffer(12);
+
+      // DEBUG "?i",DEC x,";"      'get state of gui element x
+      // SERIN 16, Baud, [s]             '16468
+      // PAUSE 1   ' millisecs
+
+      //serial.printf("?i");     // query for event
+      //serial.printf(i);
+      //serial.printf(";");
+
+      //buf.clear();
+      //buf.append("?i");
+      //buf.append( i );
+      //buf.append(";");
+      //System.out.print(buf.toString());
+ 
+      serial.printf("?i%d;", i );
+
+      //wait(0.1);         //CPU.delay(1);         // ??
+      do {
+      if (serial.readable()){
+         //v = Serial.read();
+         v = serial.getc();
+
+         e = v;
+         if (e < 0) e += 256;    // signed char to int ?
+
+         //e = (255-v) + 1;   // 2's complement
+         ready = 1;
+      }else{
+         wait(0.0001);
+         cnt++;
+         if (cnt == 1000) ready = 1;
+      }
+      //CPU.delay(10);
+      }while(!ready);
+      return e;
+  }
+
+  // set the state (v) of gui element i
+
+  static void SetValue(int i, int v)
+  {
+      //StringBuffer buf=new StringBuffer(16);
+
+      // DEBUG "?i",DEC x,";"      'get state of gui element x
+      // SERIN 16, Baud, [s]             '16468
+      // PAUSE 1   ' millisecs
+
+      //serial.printf("!i");     // set value
+      //serial.printf(i);
+      //serial.printf(",")
+      //serial.printf(v);
+      //serial.printf(";");
+
+      //buf.clear();      // slow ascii method to allow values > 255
+      if (i <= 255){
+         //buf.append("!ib");      // fast binary way
+         //buf.append((char) 2 );  // write 2 bytes
+         //buf.append((char) i );  // write id
+         //buf.append((char) v );  // always smaller als 256
+
+         serial.printf("!ib%c%c%c;", 2 , i , v );
+      }else{
+         //buf.append("!i");   // slow ascii way
+         //buf.append( i );    // in case ID greater as 255
+         //buf.append(",");
+         //buf.append( v );
+
+         serial.printf("!i%d,%d;", i, v);
+      }
+      //buf.append(";");
+      //System.out.print(buf.toString());
+
+      //CPU.delay(1);         // ??
+  }
+
+
+  static char ReadByte()
+  {
+     char v = 0, ready = 0, cnt = 0;
+
+     //wait(0.1);
+     do {
+     if (serial.readable()){
+         //v =  Serial.read();
+         v = serial.getc();
+
+         //e = v;
+         //if (e < 0) e += 256;    // signed char to int ?
+         ready = 1;
+     }else{
+        wait(0.0001);
+        cnt++;
+        if (cnt == 1000) ready = 1;
+     }
+     }while(!ready);
+     return v;
+  }
+
+
+  static void SetColor(int r, int g, int b)
+  {
+     // StringBuffer buf=new StringBuffer(12);
+
+    if (r == 0 && g == 0 && b == 0){
+      serial.printf("!s;");      // black
+    }else{
+      //buf.clear();
+      //buf.append("!sb");     // fast binary method .. so values <= 255
+      //buf.append((char) 3 ); // write 3 bytes
+      //buf.append((char) r );
+      //buf.append((char) g );
+      //buf.append((char) b );
+      //buf.append(";"      );
+      //System.out.print(buf.toString());
+
+      serial.printf("!sb%c%c%c%c;", 3, r, g, b );
+    }
+      //CPU.delay(1);         // ??
+  }
+
+
+   static void SetGrey(int g)
+  {
+     // StringBuffer buf=new StringBuffer(12);
+
+    // DEBUG "!fb", 1, dat, ";"
+
+    if (g == 0){
+      //System.out.print("!f;");      // black
+      serial.printf("!f;");      // black
+    }else{
+      //buf.clear();
+      //buf.append("!fb");     // fast binary method .. so values <= 255
+      //buf.append((char) 1 ); // write 3 bytes
+      //buf.append((char) g );
+      //buf.append(";"      );
+      //System.out.print(buf.toString());
+
+
+      serial.printf("!sf%c%c;", 1, g );
+    }
+      //CPU.delay(1);         // ??
+  }
+
+
+
+  static void SetLED(int i, int r, int g, int b)
+  {
+     // StringBuffer buf=new StringBuffer(12);
+
+      //buf.clear();
+      //buf.append("!jb");     // fast binary method .. so values <= 255
+      //buf.append((char) 4 ); // write 4 bytes
+      //buf.append((char) i );
+      //buf.append((char) r );
+      //buf.append((char) g );
+      //buf.append((char) b );
+      //buf.append(";"      );
+      //System.out.print(buf.toString());
+
+      serial.printf("!jb%c%c%c%c%c;", 4, i, r, g, b );
+
+      //CPU.delay(1);         // ??
+  }
+
+  static void DrawLine(int x1, int y1, int x2, int y2)
+  {
+      //StringBuffer buf=new StringBuffer(36);
+
+      //if (x1 < 0) x1 = 0;
+      //if (y1 < 0) y1 = 0;
+      //if (x2 < 0) x2 = 0;
+      //if (y2 < 0) y2 = 0;
+
+      //buf.clear();
+      if (x1 >= 0 && x1 <= 255 && y1 >= 0 && y1 <= 255 && x2 >= 0 && x2 <= 255 && y2 
+
+>= 0 && x2 <= 255){
+        //buf.append("!lb");        // fast binary method
+        //buf.append((char) 4  );   // write 4 bytes
+        //buf.append((char) x1 );
+        //buf.append((char) y1 );
+        //buf.append((char) x2 );
+        //buf.append((char) y2 );
+
+        serial.printf("!lb%c%c%c%c%c;", 4, x1, y1, x2, y2 );
+      }else{
+        //buf.append("!l");     // slow method .. so values > 255
+        //buf.append( x1 );
+        //buf.append("," );
+        //buf.append( y1 );
+        //buf.append("," );
+        //buf.append( x2 );
+        //buf.append("," );
+        //buf.append( y2 );
+
+        serial.printf("!l%d,%d,%d,%d;", x1, y1, x2, y2);
+      }
+      //buf.append(";" );
+      //System.out.print(buf.toString());
+
+      //CPU.delay(1);         // ??
+  }
+
+  static void Plot(int x, int y)
+  {
+      //StringBuffer buf=new StringBuffer(16);
+
+      //if (x < 0) x = 0;
+      //if (y < 0) y = 0;
+
+      //buf.clear();
+      if (x >= 0 && x <= 255 && y >= 0 && y <= 255){
+         //buf.append("!pb");       // fast method .. so values <= 255
+         //buf.append((char) 2  );  // write 2 bytes
+         //buf.append((char) x  );
+         //buf.append((char) y  );
+
+         serial.printf("!pb%c%c%c;", 2, x, y);
+      }else{
+         //buf.append("!p");        // slow method .. so values > 255
+         //buf.append( x  );
+         //buf.append("," );
+         //buf.append( y  );
+
+         serial.printf("!p%d,%d;", x, y);
+      }
+      //buf.append(";" );
+      //System.out.print(buf.toString());
+
+      //CPU.delay(1);         // ??
+  }
+
+
+  static void DrawGrid(int a, int b, int c, int d, int e, int f)
+  {
+      //StringBuffer buf=new StringBuffer(36);
+
+      //buf.clear();
+      //buf.append("!ab");        // fast binary method
+      //buf.append((char) 6  );   // write 6 bytes
+      //buf.append((char) a  );   // xspace
+      //buf.append((char) b  );   // yspace
+      //buf.append((char) c  );   // xlines
+      //buf.append((char) d  );   // ylines
+      //buf.append((char) e  );   // xoffset
+      //buf.append((char) f  );   // yoffset
+      //buf.append(";" );
+      //System.out.print(buf.toString());
+
+      serial.printf("!ab%c%c%c%c%c%c%c;", 6, a, b, c, d, e, f );
+
+      //CPU.delay(1);         // ??
+  }
+
+  static void ClearScreen()
+  {
+      serial.printf("!c;");
+  }
+
+  // shortcut:     Cmd("!c;");  or Cmd("?O;");
+
+  static void Cmd(char *p)
+  {
+      serial.printf(p);
+  }
+
+  // for "!nSpeech;" or "!Llog file;"
+
+  static void CmdStr(char cmd, char *p  )
+  {
+       //buf.clear();
+       //buf.append("!");
+       //buf.append( cmd  );
+       //buf.append( p    );
+       //buf.append(";" );
+       //System.out.print(buf.toString());
+
+       serial.printf("!%c%s;", cmd, p);
+  }
+
+  // cmd with no argument so  Cmd0('s');  = "!s;"
+
+  static void Cmd0(char cmd  )
+  {
+       //buf.clear();
+       //buf.append("!");
+       //buf.append( cmd  );
+       //buf.append(";" );
+       //System.out.print(buf.toString());
+
+       serial.printf("!%c;", cmd);
+  }
+
+  // request with no arguments
+  // Req0( 'm' );  =  "?m;"
+
+  static void Req0(char req  )
+  {
+       //buf.clear();
+       //buf.append("?");
+       //buf.append( req  );
+       //buf.append(";" );
+       //System.out.print(buf.toString());
+
+       serial.printf("?%c;", req );
+  }
+
+  // cmd with 1 arg   Cmd1('a' , 1 );  =  "!a1;"
+
+  static void Cmd1(char cmd, int arg1 )
+  {
+     //buf.clear();
+     //buf.append("!");
+     //buf.append( cmd  );
+     if (arg1 < 256){
+       //buf.append( 'b'  );      // binary mode
+       //buf.append((char) 1  );  // 1 argument
+       //buf.append((char) arg1 );
+
+       serial.printf("!%cb%c%c;", cmd, 1, arg1 );
+     }else{
+       //buf.append( arg1 );       // slow ascii mode
+
+       serial.printf("!%c%d;", cmd, arg1 );
+    }
+    //buf.append(";" );
+    //System.out.print(buf.toString());
+  }
+
+  // cmd with 2 args    Cmd2('G', 20, 1);  = "!G20,1;"
+  // plot = Cmd2( 'p', x, y );
+
+  static void Cmd2(char cmd, int arg1, int arg2 )
+  {
+    //buf.clear();
+    //buf.append("!"   );       // !
+    //buf.append( cmd  );
+    if (arg1 < 255 && arg2 < 255){
+       //buf.append( 'b'  );      // binary mode
+       //buf.append((char) 2  );  // 2 arguments
+       //buf.append((char) arg1 );
+       //buf.append((char) arg2 );
+
+       serial.printf("!%cb%c%c%c;", cmd, 2, arg1, arg2 );
+     }else{
+       //buf.append( arg1 );        // slow ascii mode
+       //buf.append(","   );
+       //buf.append( arg2 );
+ 
+       serial.printf("!%c%d,%d;", cmd, arg1, arg2 );
+     }
+     //buf.append(";"   );
+     //System.out.print(buf.toString());
+  }
+
+  // cmd with 3 args
+  // setcolor = Cmd3( 's', r, g, b );
+
+  static void Cmd3(char cmd, int arg1, int arg2, int arg3 )
+  {
+    //buf.clear();
+    //buf.append("!"   );       // !
+    //buf.append( cmd  );
+    if (arg1 < 255 && arg2 < 255 && arg3 < 255){
+       //buf.append( 'b'  );      // binary mode
+       //buf.append((char) 3  );  // 3 arguments
+       //buf.append((char) arg1 );
+       //buf.append((char) arg2 );
+       //buf.append((char) arg3 );
+
+       serial.printf("!%cb%c%c%c%c;", cmd, 3, arg1, arg2, arg3 );
+    }else{
+       //buf.append( arg1 );     // slow ascii mode
+       //buf.append(","   );
+       //buf.append( arg2 );
+       //buf.append(","   );
+       //buf.append( arg3 );
+
+       serial.printf("!%c%d,%d,%d;", cmd, arg1, arg2, arg3 );
+     }
+     //buf.append(";"   );
+     //System.out.print(buf.toString());
+  }
+
+  // cmd with 4 args
+  // line = Cmd4( 'l', x1, y1, x2, y2);
+
+  static void Cmd4(char cmd, int arg1, int arg2, int arg3, int arg4 )
+  {
+    //buf.clear();
+    //buf.append("!"   );       // !
+    //buf.append( cmd  );
+    if (arg1 < 255 && arg2 < 255 && arg3 < 255 && arg4 < 255){
+       //buf.append( 'b'  );      // binary mode
+       //buf.append((char) 4  );  // 4 arguments
+       //buf.append((char) arg1 );
+       //buf.append((char) arg2 );
+       //buf.append((char) arg3 );
+       //buf.append((char) arg4 );
+
+       serial.printf("!%cb%c%c%c%c%c;", cmd, 4, arg1, arg2, arg3, arg4 );
+    }else{
+       //buf.append( arg1 );    // slow ascii mode
+       //buf.append(","   );
+       //buf.append( arg2 );
+       //buf.append(","   );
+       //buf.append( arg3 );
+       //buf.append(","   );
+       //buf.append( arg4 );
+ 
+       serial.printf("!%c%d,%d,%d,%d;", cmd, arg1, arg2, arg3, arg4 );
+    }
+     //buf.append(";"   );
+     //System.out.print(buf.toString());
+  }
+
+  // play video, mp3 or picture
+
+  static void Media(char *p)
+  {
+       //buf.clear();
+       //buf.append("!V");
+       //buf.append( p );
+       //buf.append(";" );
+       //System.out.print(buf.toString());
+  
+       serial.printf("!V%s;", p);
+  }
+
+  static void Speech(char *p)
+  {
+       //buf.clear();
+       //buf.append("!n");
+       //buf.append( p );
+       //buf.append(";" );
+       //System.out.print(buf.toString());
+ 
+       serial.printf("!n%s;", p);
+  }
+
+  static void Log(char *p)
+  {
+       //buf.clear();
+       //buf.append("!L");
+       //buf.append( p );
+       //buf.append(";" );
+       //System.out.print(buf.toString());
+  
+       serial.printf("!L%s;", p);
+ }
+
+ static void ScrollLeft()
+ {
+     serial.printf("!G20,1;");
+  }
+
+/*
+  static void DrawGrid(int a, int b, int c, int d, int e, int f)
+  {
+      //StringBuffer buf=new StringBuffer(36);
+
+      //buf.clear();
+      //buf.append("!ab");        // fast binary method
+      //buf.append((char) 6  );   // write 6 bytes
+      //buf.append((char) a  );   // xspace
+      //buf.append((char) b  );   // yspace
+      //buf.append((char) c  );   // xlines
+      //buf.append((char) d  );   // ylines
+      //buf.append((char) e  );   // xoffset
+      //buf.append((char) f  );   // yoffset
+      //buf.append(";" );
+
+      //System.out.print(buf.toString());
+
+      serial.printf("!ab%c%c%c%c%c%c%c;", 6, a, b, c, d, e, f );
+
+      //CPU.delay(1);         // ??
+  }
+*/
+
+  /*
+  static void initpins() {
+    // OUTPUT dischargecap     'capacitor reset   p 15
+    // LOW    dischargecap     'disable           p 15
+
+    // OUTPUT chargecap        'capacitor charge  p 14
+    // HIGH   chargecap        'disable           p 14
+
+    // INPUT  chanblow      'channel b    p 12
+    // INPUT  chanalow      'channel a    p 13
+    // INPUT  chanbhigh     'channel b high  p 10
+    // INPUT  chanahigh     'channel a high  p 11
+
+    CPU.setInput (CPU.pins[10]);    // chan b high opamp
+    CPU.setInput (CPU.pins[11]);    // chan a high opamp
+    CPU.setInput (CPU.pins[12]);    // chan b low opamp
+    CPU.setInput (CPU.pins[13]);    // chan a low opamp
+
+    CPU.setOutput(CPU.pins[14]);    // charge cap pin
+    CPU.setOutput(CPU.pins[15]);    // discarge cap pin
+
+    CPU.writePin (CPU.pins[15] ,  false );
+    CPU.writePin (CPU.pins[14] ,  true  );
+  }
+
+
+  // interface with ltc1298 chip
+
+  // static int gEnablePin;        // speedup ?
+  // static int gClockPin;
+  // static int gDataPin;
+
+  static void initadc(int dataPin, int clockPin, int enablePin){
+
+    //gEnablePin =  CPU.pins[enablePin];   // speedup ?
+    //gClockPin  =  CPU.pins[clockPin];
+    //gDataPin   =  CPU.pins[dataPin];
+
+    CPU.writePin(CPU.pins[enablePin],false);          // init the bus
+    CPU.writePin(CPU.pins[clockPin ],false);
+    CPU.delay(100);                         // settle down
+    CPU.writePin(CPU.pins[enablePin],false);
+    CPU.writePin(CPU.pins[enablePin],true );
+
+    //CPU.writePin(CPU.pins[dataPin  ],false );     // test
+    //Serial.print(CPU.pins[ 1 ]);      // just adds one ?
+  }
+
+  static int readadc(int dataPin, int clockPin, int enablePin, int channel, int 
+
+mode){
+
+     int command, readSize;
+     int clockIn;
+
+     if (channel == 0)  command = 0x1a;      // %11010  read ch0  (pin2)
+     else               command = 0x1e;      // %11110  read ch1  (pin3)
+
+     readSize   = 12;                        // Bytes to Read on the LTC1298
+     //resolution = 4096;                    // Range of the LTC1298
+     //clockIn    = 1000;
+
+     CPU.writePin(CPU.pins[enablePin],false);
+     // set port
+     CPU.shiftOut(CPU.pins[dataPin],CPU.pins[clockPin],5,CPU.SHIFT_MSB,(command << 
+
+11));
+     // read the value
+     clockIn = 
+
+CPU.shiftIn(CPU.pins[dataPin],CPU.pins[clockPin],readSize,CPU.PRE_CLOCK_MSB);
+     CPU.writePin(CPU.pins[enablePin],true);
+
+     //CPU.delay(100);
+     //CPU.writePin(CPU.pins[dataPin],false ); // test
+     //CPU.setInput(dataPin);
+
+
+     if (mode == 0){           // low
+        clockIn = clockIn - (2048-128);
+     }else{
+        if (mode == 1){         // high
+         //clockIn = clockIn / 16;   //  make 8 bits from 12
+           clockIn = clockIn >> 4;   //  make 8 bits from 12
+        }else{                         // gnd
+           clockIn = 128;
+        }
+     }
+
+     //  Serial.print("v:");
+     //  Serial.print(channel);
+     //  Serial.print(",");
+     //  Serial.print(clockIn);
+     //  Serial.println("");
+
+     return clockIn;
+  }
+  */
+
+
+  /*
+  static int measure(int channel, int mode) {
+    int e, time;
+
+    if (channel == 0){  // chan a
+       if (mode == 0){
+          e = 13;       // a low
+       }else{
+          if (mode == 1){
+             e = 11;       // a high
+          }else{
+             return 128;   // gnd
+          }
+       }
+    }else{   // chan b
+       if (mode == 0){
+          e = 12;       // b low
+       }else{
+          if (mode == 1){
+             e = 10;       // b high
+          }else{
+             return 128;   // gnd
+          }
+       }
+    }
+
+    // PULSOUT dischargecap, 10     '2uS units   ->  20uS
+
+    //CPU.writePin(CPU.pins[15] ,  1 );    // discharge cap
+    //CPU.delay( 1 );
+    //CPU.writePin(CPU.pins[15] ,  0 );
+    CPU.pulseOut(2, CPU.pins[15] );   //     2 x 8.7 = 17 uS
+
+    // LOW    chargecap    'start charge
+    // RCTIME chanahigh, 0 , val         'PULSIN
+    // HIGH   chargecap   'stop charge
+
+    CPU.writePin(CPU.pins[14] ,  false );
+    time = CPU.rcTime( 1000 ,CPU.pins[ e ], true );  //  8.68 uS units    (0-200uS)
+    CPU.writePin(CPU.pins[14] ,  true  );
+
+    //CPU.readPin(  CPU.pins[e]);    // switch back to input
+    time = time << 3;    // resolution 8 times lower as basic stamp
+
+    return time;
+  }
+ */
+
+
+#define boolean int
+
+  // ChanXMode    '0=off, 1=low, 2=high, 3=gnd ?
+ //  Mode          '0=scope,  1=XY,  2=record   (3=off ?)
+
+int main() {
+   boolean ready;    // Bit
+   int   x, s, cnt = 0, ptr, speed = 0;     // Byte
+   int   x1, y1, x2, y2, ecnt = 0;
+   int mem[10];   //  int    [] mem;
+
+   //StringBuffer serbuf = new StringBuffer(80);
+
+   //mem      = new int [10];
+
+   InitStampdock();
+
+   serial.printf("demo running .. \r\n");
+
+
+
+   for (cnt = 0; cnt < 100; cnt++){
+      SetValue(cnt, 0);
+   }
+
+   Cmd("!j0,250,0,0;");    // LED 0 to red
+   Cmd("!j1,0,250,0;");    // LED 1 to green
+   Cmd("!j2,0,0,250;");    // LED 2 to blue
+   Cmd("!j3,4;");          // LED 3 to white
+
+   Cmd4( 'j', 0, 250, 0, 0 );   // LED 0 to red
+
+   SetColor(100,100,200);
+   ClearScreen();            // clear graph
+
+   SetColor(128,128,228);
+   DrawGrid(20,20,29,19,55,12);
+
+   SetColor(0,0,0);   // black
+   for (cnt = 0; cnt < 20; cnt++){
+
+      x1 = cnt * 10;
+      y1 = 15;
+
+      Plot(x1, y1);
+   }
+
+   for (cnt = 0; cnt < 20; cnt++){
+      x1 = 10 * cnt;
+      x2 = 15 * cnt;
+      y1 = 20;
+      y2 = 40;
+      DrawLine(x1,y1,x2,y2);
+   }
+
+   Cmd("!f12;");      // set greyscale value 12
+   Cmd("!r60,60,100,100;");    // draw rectangle
+
+   Cmd("!h10,70;");     // set draw position to home or 10,70
+   Cmd("!g50;");        // draw grey pixel and increase
+   Cmd("!g100;");       // draw grey pixel and increase
+   Cmd("!g150;");       // draw grey pixel and increase
+   Cmd("!g200;");       // draw grey pixel and increase
+   Cmd("!w10;");        // draw 10 white pixels and increase
+   Cmd("!b10;");        // draw 10 black pixels and increase
+
+
+   s = 80;
+   //serbuf.clear();
+   //serbuf.append("!Pb");        // poly line, binary mode
+   //serbuf.append((char)33);     // 33 values follow
+   //serbuf.append((char)20);     // dx=20
+   //serbuf.append((char) 0);     // dy=0 .. so only y values
+   //serbuf.append((char)60);     // x start
+   //serbuf.append((char) s);     // y start
+
+   serial.printf("!Pb%c%c%c%c%c", 33, 20, 0, 60, s );
+
+   for (cnt = 0; cnt <= 28; cnt++){
+      x = cnt * cnt;
+      //serbuf.append((char) x  );    // y value of next line
+
+      serial.printf("%c", x );
+   }
+
+   //serbuf.append(";");     // end poly line cmd
+   //System.out.print(serbuf.toString());
+   serial.printf(";");
+
+
+   // do some file access
+
+   Cmd("!Otempfile.txt;");    // open file for writing
+   Cmd("!e12,24,48,96;");     // write some values
+   Cmd("!O;");                // close file
+
+   Cmd("?Otempfile.txt;");   // open file for reading
+   ReadByte();
+   ReadByte();
+   ReadByte();
+   s = ReadByte();    // read LSB size of file
+   serial.printf("file is ");
+   serial.printf( "%d", s );
+   serial.printf(" bytes.\r\n");
+
+   serial.printf("read values: ");
+   for (cnt = 0; cnt < s; cnt++){
+      Cmd("?e;");    // read a byte
+      x = ReadByte();
+      serial.printf( "%d", x );
+      serial.printf(",");
+   }
+   serial.printf("\r\n");
+   Cmd("?O;");    // close file
+   ReadByte();
+
+
+   serial.printf("ticks is: ");
+   Cmd("?t0;");    // request ticks
+   for (cnt = 0; cnt < 4; cnt++){
+      mem[cnt] = (int) ReadByte();
+   }
+   for (cnt = 0; cnt < 4; cnt++){
+      serial.printf( "%d", mem[cnt] );
+      serial.printf(",");
+   }
+   serial.printf("\r\n");
+
+
+
+   serial.printf("time: y2 y1 mon day hour min sec tic : ");
+   Cmd("?t1;");    // request time
+   for (cnt = 0; cnt < 8; cnt++){
+      mem[cnt] = ReadByte();
+   }
+   for (cnt = 0; cnt < 8; cnt++){
+      serial.printf( "%d", mem[cnt] );
+      serial.printf(",");
+   }
+   serial.printf("\r\n");
+
+   // for (cnt = 0; cnt < 50; cnt++)
+   // Cmd2( 'G', 20, 1 );          // do "!G20,1;"
+
+
+   Cmd("!nThis is a speech test.;");
+
+   Cmd("!LThis is a log file test;");
+
+   Cmd("!Vmedia/video.mpg;");
+   wait( 1.1 ); // CPU.delay(1000);
+   Cmd("!Vmedia/sound.mp3;");
+   wait (1.1); // CPU.delay(1000);
+   Cmd("!Vmedia/pic.jpg;");
+
+   while (true){
+      if (ecnt == 2){        // test speed up
+         x = GetEvent();
+         ecnt = 0;
+      }else{
+         ecnt++;
+         x = 0;
+      }
+
+      if (x != 0){      // do we have a gui click or event ?
+        ecnt = 0;            // just had an event, so max wait
+        s = GetValue(x);     // get value of gui element x
+
+        // now handle GUI element x with value/state s
+        if (x == 1){
+           //mode = s;
+           // clear graph
+           //'DEBUG "!s100,100,200;!c;"    'set blue color , clear screen    17c
+           //DEBUG "!sb",3, 100,100,200, ";!c;"     'fast binary way to set color  
+
+
+           //serial.printf("!s100,100,200;!c;");
+           SetColor(100,100,200);
+           ClearScreen();
+        } else
+
+        if (x == 10){     // checkmark 0
+           SetValue(12, s);    // set checkmark 2
+        } else
+        if (x == 11){     // checkmark 1
+           SetValue(13, s);    // set checkmark 3
+        } else
+
+        if (x == 20){     // hor switch 0
+           SetValue(21, s);    // set hor switch 1
+        } else
+         if (x == 21){     // hor switch1
+           SetValue(20, s);    // set hor switch 0
+        } else
+
+        if (x == 40){     // hor potm 0
+           SetValue(41, s);    // hor potm 1
+           SetValue(60, s);    // set analog meter
+        } else
+        if (x == 41){     // hor potm 1
+           SetValue(40, s);    // hor potm 0
+           SetValue(61, s);    // set analog meter
+        } else
+
+         if (x == 100){     // turn knob 0
+           SetValue(101, s);    // turn knob 1
+        } else
+        if (x == 101){     // turn knob 1
+           SetValue(100, s);    // turn knob 0
+        } else
+
+        if (x == 90){     // button 1
+           ScrollLeft();    // scroll left 1 pixel
+        }
+
+
+       }  // if event
+
+       wait(0.1);   // CPU.delay(100);
+
+       // do ..
+
+
+   }   // end while true
+ }       // end main
+
+
+
+
+ //}  // class demo
\ No newline at end of file