Vastly improved serial scan and connection routines

Connects much more reliably on Mac and Windows.  Handle serial failures
much more gracefully.  Launch and display window before checking serial
port, so that users are not staring at a "blank screen" when scanning
the ports.

Closes #10.
Closes #14.

.gitignore

@@ -4,3 +4,5 @@ RoboPaint_RT_Files/.DS_Store
 processing/RoboPaint_RT/.DS_Store
 
 processing/.DS_Store
+
+.DS_Store

processing/RoboPaint_RT/RoboPaint_RT.pde

@@ -5,10 +5,14 @@
  
  https://github.com/evil-mad/robopaint-rt 
  
+ Requires: 
+ 
  TODO: Water/Paint dish highlights may still have some oddities.
  
  TODO: Speed up redraw of highlights and button text (major improvements have been made; no longer the primary concern).
  
+ 
+ 
  */
 
 import de.looksgood.ani.*;
@@ -108,6 +112,7 @@ color Black = color(25, 25, 25);  // BLACK
 color Water = color(230, 230, 255);  // BLUE 
 
 boolean firstPath;
+boolean doSerialConnect = true;
 boolean SerialOnline;
 Serial myPort;  // Create object from Serial class
 int val;        // Data received from the serial port
@@ -224,7 +229,7 @@ void setup()
 
   shiftKeyDown = false;
 
-  frameRate(60);
+  frameRate(60);  // sets maximum speed only
 
 
   paintset[0] = Black;
@@ -257,124 +262,6 @@ void setup()
 
 
 
-
-  // Serial port search string:  
-  int PortCount = Serial.list().length;
-  int PortNumber = -1;
-
-//    println("\nI found "+PortCount+" serial ports, which are:");
-//    println(Serial.list());
-
-  String str1, str2;
-  int j;
-  String os=System.getProperty("os.name").toLowerCase();
-
-  boolean isMacOs = os.startsWith("mac os x");
-  boolean isWin = os.startsWith("win");
-  String portName;
-
-  if (isMacOs) 
-  {
-    str1 = "/dev/tty.usbmodem";       // Can change to be the name of the port you want, e.g., COM5.
-    // The default value is "/dev/cu.usbmodem"; which works on Macs.
-
-    str1 = str1.substring(0, 14);
-
-    j = 0;
-    while (j < (PortCount)) {
-      str2 = Serial.list()[j].substring(0, 14);
-      if (str1.equals(str2) == true)
-        PortNumber = j;
-      j++;
-    }
-  }
-
-  else if  (isWin) 
-  {     // do windows-specific things here
-    // Only currently available ports will be listed.
-    j = PortCount;
-  }
-
-  else {
-    // Assume linux
-
-    str1 = "/dev/ttyACM"; 
-    str1 = str1.substring(0, 11);
-
-    j = 0;
-    while (j < (PortCount)) {
-      str2 = Serial.list()[j].substring(0, 11);
-      if (str1.equals(str2) == true)
-        PortNumber = j;
-      j++;
-    }
-  }
-  SerialOnline = false;
-
-  if (PortNumber >= 0)
-  {   // We have a likely suspect of our port name, for Mac/Lin.
-    portName = Serial.list()[PortNumber];
-    myPort = new Serial(this, portName, 38400);
-    myPort.buffer(1);
-    myPort.clear(); 
-    println("Serial port "+portName+" found and activated.");
-    SerialOnline = true;
-  } 
-  else {  // For Windows: Try available ports, sequentially. 
-
-    j = 0;
-    while (j < PortCount) {
-
-
-      portName = Serial.list()[j];
-      try
-      {      
-        myPort = new Serial(this, portName, 38400);
-        myPort.buffer(1);
-        myPort.clear(); 
-        println("Serial port "+portName+" found and activated.");
-        SerialOnline = true;
-        j =  PortCount; // Break out of loop
-      }
-      catch (Exception e)
-      {
-        SerialOnline = false;
-      }
-
-      j++;
-    }
-  }
-
-  if (SerialOnline == false)
-  {
-    println("\nI found "+PortCount+" serial ports, which are:");
-    println(Serial.list());
-    println("But I don't know which one to use. :(\n"); 
-    println("Now entering offline simulation mode.\n");
-  }   
-
-
-
-
-
-
-
-  if (SerialOnline)
-  {    
-    myPort.write("EM,2\r");  //Configure both steppers to 1/8 step mode
-
-      // Configure brush lift servo endpoints and speed
-    myPort.write("SC,4," + str(ServoPaint) + "\r");  // Brush DOWN position, for painting
-    myPort.write("SC,5," + str(ServoUp) + "\r");  // Brush UP position 
-
-    //    myPort.write("SC,10,255\r"); // Set brush raising and lowering speed.
-    myPort.write("SC,10,65535\r"); // Set brush raising and lowering speed.
-  }
-
-  // Ensure that we actually raise the brush:
-  BrushDown = true;  
-  raiseBrush();    
-
   // Button setup
 
   font_ML16  = loadFont("Miso-Light-16.vlw"); 
@@ -426,11 +313,10 @@ void setup()
   MousePaperLeft, MousePaperTop - 5, font_CB, 20, LabelColor, LabelColor);
 
 
-  if ( SerialOnline == false)
-  {
-    UIMessage.label = "WaterColorBot not found.  Entering Simulation Mode. ";
-    UIMessageExpire = millis() + 5000;
-  }
+
+
+  UIMessage.label = "Searching For WaterColorBot... ";
+  UIMessageExpire = millis() + 25000; 
 
   rectMode(CORNERS);
 
@@ -482,8 +368,6 @@ void setup()
   redrawButtons();
   redrawHighlight();
   redrawLocator();
-
-  UIMessageExpire = millis() + 5000;
 }
 
 
@@ -777,7 +661,11 @@ void draw() {
   drawToDoList();
 
   // NON-DRAWING LOOP CHECKS ==========================================
-  checkServiceBrush(); 
+
+  if (doSerialConnect == false)
+    checkServiceBrush(); 
+
+
   checkHighlights();
 
   if (UIMessage.label != "")
@@ -814,6 +702,46 @@ void draw() {
     // Draw locator crosshair at xy pos, less crosshair offset
     image(imgLocator, MotorLocatorX-10, MotorLocatorY-15);
   }
+
+
+  if (doSerialConnect)
+  {
+    // FIRST RUN ONLY:  Connect here, so that 
+
+      doSerialConnect = false;
+
+    scanSerial();
+
+    if (SerialOnline)
+    {    
+      myPort.write("EM,2\r");  //Configure both steppers to 1/8 step mode
+
+        // Configure brush lift servo endpoints and speed
+      myPort.write("SC,4," + str(ServoPaint) + "\r");  // Brush DOWN position, for painting
+      myPort.write("SC,5," + str(ServoUp) + "\r");  // Brush UP position 
+
+      //    myPort.write("SC,10,255\r"); // Set brush raising and lowering speed.
+      myPort.write("SC,10,65535\r"); // Set brush raising and lowering speed.
+
+
+      // Ensure that we actually raise the brush:
+      BrushDown = true;  
+      raiseBrush();    
+
+      UIMessage.label = "Welcome to RoboPaint RT!  Hold 'h' key for help!";
+      UIMessageExpire = millis() + 5000;
+      println("Now entering interactive painting mode.\n");
+      redrawButtons();
+    }
+    else
+    { 
+      println("Now entering offline simulation mode.\n");
+
+      UIMessage.label = "WaterColorBot not found.  Entering Simulation Mode. ";
+      UIMessageExpire = millis() + 5000;
+      redrawButtons();
+    }
+  }
 }
 
 // Only need to redraw if hovering or changing state