18 lines
417 B
Python
18 lines
417 B
Python
"""
|
|
'fading_led.py'.
|
|
|
|
=================================================
|
|
fades a LED using pulseio's PWM
|
|
"""
|
|
|
|
import pulseio
|
|
import board
|
|
|
|
led = pulseio.PWMOut(board.D13, frequency=500, duty_cycle=0)
|
|
|
|
while True:
|
|
for i in range(100):
|
|
if i < 50: # fade up
|
|
led.duty_cycle = int(i * 2 * 65535 / 100)
|
|
else: # fade down
|
|
led.duty_cycle = 65535 - int((i - 50) * 2 * 65535 / 100)
|