circuitpython/ports/nrf/boards/feather52832/examples/pulseio.py

26 lines
729 B
Python

import time
from board import *
from pulseio import *
# Setup BLUE and RED LEDs as PWM output (default frequency is 500 Hz)
ledb = PWMOut(LED2)
ledr = PWMOut(LED1)
# Set the BLUE LED to have a duty cycle of 5000 (out of 65535, so ~7.5%)
ledb.duty_cycle = 5000
# Setup pin A0 as a standard PWM out @ 50% to test on the oscilloscope.
# You should see a 50% duty cycle waveform at ~500Hz on the scope when you
# connect a probe to pin A0
a0 = PWMOut(A0)
a0.duty_cycle = int(65535/2)
# Constantly pulse the RED LED
while True:
for i in range(100):
ledr.duty_cycle = int(i / 100 * 65535)
time.sleep(0.01)
for i in range(100, -1, -1):
ledr.duty_cycle = int(i / 100 * 65535)
time.sleep(0.01)