# Import CircuitPlayground class from the circuitplayground.py in the same directory.
from circuitplayground import CircuitPlayground
# Grab the serial port from the command line parameters.
if len(sys.argv) != 2:
print('ERROR! Must specify the serial port as command line parameter.')
sys.exit(-1)
port = sys.argv[1]
# Define a function which will be called when a color is detect and received.
# The red green blue parameters will be set with values from 0 to 255 (inclusive)
# which repreent the red, green, blue color value (0 is minimum intentiy, 255
# is maximum intensity).
def color(red, green, blue):
print('Detected red={0} green={1} blue={2}'.format(red, green, blue))
# Connect to Circuit Playground board on specified port.
board = CircuitPlayground(port)
# Loop forever reading the color every second and printing it out.
try:
print('Reading color every second, press Ctrl-C to quit...')
while True:
# Call sense_color and provide the color callback function defined above.
board.sense_color(color)
time.sleep(1)
finally:
# Close Firmata board connection when done.
board.close()
