Added PWM capabilities to RGB, allowing one to set the RGB values from a...

BreakfastSerial/components.py

@@ -125,6 +125,8 @@ def __init__(self, board, pins):
     self._green = Led(board, pins["green"])
     self._blue = Led(board, pins["blue"])
 
+
+
   def off(self):
     self._red.off(); self._green.off(); self._blue.off()
     return self
@@ -157,6 +159,22 @@ def white(self):
     self._red.on(); self._green.on(); self._blue.on()
     return self
 
+  def setColor(self, hexColTuple):
+    if self._red._pin.mode != pyfirmata.PWM:
+      self._red._pin.mode= pyfirmata.PWM 
+    if self._green._pin.mode != pyfirmata.PWM:
+      self._green._pin.mode= pyfirmata.PWM
+    if self._blue._pin.mode != pyfirmata.PWM:
+      self._blue._pin.mode= pyfirmata.PWM
+
+    self._red._pin.write(hexColTuple[0]/255)
+    self._green._pin.write(hexColTuple[1]/255)
+    self._blue._pin.write(hexColTuple[2]/255)
+    return self
+
+
+
+
 class Buzzer(Led):
   pass
 

examples/gtk_color_picker_LED.py

@@ -0,0 +1,101 @@
+#!/usr/bin/env python
+"""
+Changes the color of an LED using the GTK color picker.
+Requires pygtk.
+Use circuit from Example 3, Sparkfun Inventors Guide : http://ardx.org/src/guide/2/ARDX-EG-01.pdf
+"""
+
+# example colorsel.py
+from BreakfastSerial import RGBLed, Arduino
+
+board = Arduino()
+led = RGBLed(board, { "red": 9, "green": 10, "blue": 11 })
+import pygtk
+pygtk.require('2.0')
+import gtk
+
+class ColorSelectionExample:
+    # Color changed handler
+    def color_changed_cb(self, widget):
+        # Get drawingarea colormap
+        colormap = self.drawingarea.get_colormap()
+
+        # Get current color
+        c = self.colorseldlg.colorsel.get_current_color()
+        colorTuple = (c.red_float*255, c.green_float*255, c.blue_float*255)
+        print str(colorTuple)
+        led.setColor(colorTuple)
+
+        # Set window background color
+        self.drawingarea.modify_bg(gtk.STATE_NORMAL, c)
+
+    # Drawingarea event handler
+    def area_event(self, widget, event):
+        handled = False
+
+        # Check if we've received a button pressed event
+        if event.type == gtk.gdk.BUTTON_PRESS:
+            handled = True
+
+            # Create color selection dialog
+            if self.colorseldlg == None:
+                self.colorseldlg = gtk.ColorSelectionDialog(
+                    "Select background color")
+
+            # Get the ColorSelection widget
+            colorsel = self.colorseldlg.colorsel
+
+            colorsel.set_previous_color(self.color)
+            colorsel.set_current_color(self.color)
+            colorsel.set_has_palette(True)
+
+            # Connect to the "color_changed" signal
+            colorsel.connect("color_changed", self.color_changed_cb)
+            # Show the dialog
+            response = self.colorseldlg.run()
+
+            if response -- gtk.RESPONSE_OK:
+                self.color = colorsel.get_current_color()
+            else:
+                self.drawingarea.modify_bg(gtk.STATE_NORMAL, self.color)
+
+            self.colorseldlg.hide()
+
+        return handled
+
+    # Close down and exit handler
+    def destroy_window(self, widget, event):
+        gtk.main_quit()
+        return True
+
+    def __init__(self):
+        self.colorseldlg = None
+        # Create toplevel window, set title and policies
+        window = gtk.Window(gtk.WINDOW_TOPLEVEL)
+        window.set_title("Color selection test")
+        window.set_resizable(True)
+
+        # Attach to the "delete" and "destroy" events so we can exit
+        window.connect("delete_event", self.destroy_window)
+
+        # Create drawingarea, set size and catch button events
+        self.drawingarea = gtk.DrawingArea()
+
+        self.color = self.drawingarea.get_colormap().alloc_color(0, 65535, 0)
+
+        self.drawingarea.set_size_request(200, 200)
+        self.drawingarea.set_events(gtk.gdk.BUTTON_PRESS_MASK)
+        self.drawingarea.connect("event",  self.area_event)
+
+        # Add drawingarea to window, then show them both
+        window.add(self.drawingarea)
+        self.drawingarea.show()
+        window.show()
+
+def main():
+    gtk.main()
+    return 0
+
+if __name__ == "__main__":
+    ColorSelectionExample()
+    main()