18 lines
559 B
Python
18 lines
559 B
Python
"""CircuitPython Essentials: PWM with Fixed Frequency example."""
|
|
import time
|
|
import board
|
|
import pwmio
|
|
|
|
# LED setup for most CircuitPython boards:
|
|
led = pwmio.PWMOut(board.LED, frequency=5000, duty_cycle=0)
|
|
# LED setup for QT Py M0:
|
|
# led = pwmio.PWMOut(board.SCK, frequency=5000, duty_cycle=0)
|
|
|
|
while True:
|
|
for i in range(100):
|
|
# PWM LED up and down
|
|
if i < 50:
|
|
led.duty_cycle = int(i * 2 * 65535 / 100) # Up
|
|
else:
|
|
led.duty_cycle = 65535 - int((i - 50) * 2 * 65535 / 100) # Down
|
|
time.sleep(0.01)
|