Merge pull request #241 from villares/master

Create arduino_input.pyde

mode/examples/Contributed Libraries in Python/Arduino-Firmata/arduino_input.pyde

@@ -0,0 +1,72 @@
+"""
+arduino_input
+
+Demonstrates the reading of digital and analog pins of an Arduino board
+running the StandardFirmata firmware.
+
+To use:
+* Using the Arduino software, upload the StandardFirmata example (located
+  in Examples > Firmata > StandardFirmata) to your Arduino board.
+* Run this sketch and look at the list of serial ports printed in the
+  message area below. Note the index of the port corresponding to your
+  Arduino board (the numbering starts at 0).  (Unless your Arduino board
+  happens to be at index 0 in the list, the sketch probably won't work.
+  Stop it and proceed with the instructions.)
+* Modify the "arduino = Arduino(...)" line below, changing the number
+  in Arduino.list()[0] to the number corresponding to the serial port of
+  your Arduino board.  Alternatively, you can replace Arduino.list()[0]
+  with the name of the serial port, in double quotes, e.g. "COM5" on Windows
+  or "/dev/tty.usbmodem621" on Mac.
+* Run this sketch. The squares show the values of the digital inputs (HIGH
+  pins are filled, LOW pins are not). The circles show the values of the
+  analog inputs (the bigger the circle, the higher the reading on the
+  corresponding analog input pin). The pins are laid out as if the Arduino
+  were held with the logo upright (i.e. pin 13 is at the upper left). Note
+  that the readings from unconnected pins will fluctuate randomly. 
+  
+For more information, see: http:#playground.arduino.cc/Interfacing/Processing
+"""
+
+add_library('serial')  # replaces import processing.serial.*;
+add_library('arduino')  # replaces import cc.arduino.*;
+
+off = color(4, 79, 111)
+on = color(84, 145, 158)
+
+def setup():
+    global arduino
+    size(470, 280)
+
+    # Prints out the available serial ports.
+    println(Arduino.list())
+
+    # Modify this line, by changing the "0" to the index of the serial
+    # port corresponding to your Arduino board (as it appears in the list
+    # printed by the line above).
+    arduino = Arduino(this, Arduino.list()[0], 57600)
+
+    # Alternatively, use the name of the serial port corresponding to your
+    # Arduino (in double-quotes), as in the following line.
+    # arduino = Arduino(this, "/dev/tty.usbmodem621", 57600)
+
+    # Set the Arduino digital pins as inputs.
+    for i in range(14):  # for pins 0 to 13
+        arduino.pinMode(i, Arduino.INPUT)
+
+def draw():
+    background(off)
+    stroke(on)
+
+    # Draw a filled box for each digital pin that's HIGH (5 volts).
+    for i in range(14):  # from 0 to 13
+        if arduino.digitalRead(i) == Arduino.HIGH:
+            fill(on)
+        else:
+            fill(off)
+        rect(420 - i * 30, 30, 20, 20)
+
+    # Draw a circle whose size corresponds to the value of an analog input.
+    noFill()
+    for i in range(6):  # for analog pins from A0 to A5
+        ellipse(280 + i * 30, 240, arduino.analogRead(i) / 16,
+                arduino.analogRead(i) / 16)