SunFounder Da Vinci Kit Bedienungsanleitung Seite 249

# Define a function to set up colors
def setColor(color):
# configures the three LEDs' luminance with the inputted color value .
# Devide colors from 'color' veriable
R_val = (color
G_val = (color
B_val = (color
# Map color value from 0~255 to 0~100
R_val = MAP(R_val, 0, 255, 0, 100)
G_val = MAP(G_val, 0, 255, 0, 100)
B_val = MAP(B_val, 0, 255, 0, 100)
#Assign the mapped duty cycle value to the corresponding PWM channel to change
the luminance.
p_R.ChangeDutyCycle(R_val)
p_G.ChangeDutyCycle(G_val)
p_B.ChangeDutyCycle(B_val)
#print ("color_msg: R_val = %s, G_val = %s,
def loop():
while True:
pir_val = GPIO.input(pirPin)
if pir_val==GPIO.HIGH:
setColor(0xFFFF00)
else :
setColor(0x0000FF)
def destroy():
p_R.stop()
p_G.stop()
p_B.stop()
GPIO.cleanup()
if __name__ == '__main__':
setup()
try:
loop()
except KeyboardInterrupt:
destroy() will be
destroy()
Code Erklärung
rgbPins = {'Red':18, 'Green':27, 'Blue':22}
def setup():
global p_R, p_G, p_B
GPIO.setmode(GPIO.BCM)
# ......
for i in rgbPins:
GPIO.setup(rgbPins[i], GPIO.OUT, initial=GPIO.HIGH)
p_R = GPIO.PWM(rgbPins['Red'], 2000)
p_G = GPIO.PWM(rgbPins['Green'], 2000)
p_B = GPIO.PWM(rgbPins['Blue'], 2000)
p_R.start(0)
p_G.start(0)
1.8. 2 Eingabe
& 0xFF0000) >> 16
& 0x00FF00) >> 8
& 0x0000FF) >> 0
# Program start from here
# When 'Ctrl+C' is pressed, the child program
executed.
B_val = %s"%(R_val, G_val, B_val))
# Release resource
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