openmv/scripts/examples/50-Arduino-Boards/Nicla-Vision/00-Board-Control/pwm_control.py

37 lines
885 B
Python

# This work is licensed under the MIT license.
# Copyright (c) 2013-2023 OpenMV LLC. All rights reserved.
# https://github.com/openmv/openmv/blob/master/LICENSE
#
# PWM Control Example
#
# This example shows how to use PWM.
import time
from pyb import Pin, Timer
class PWM:
def __init__(self, pin, tim, ch):
self.pin = pin
self.tim = tim
self.ch = ch
pwms = {
"PWM1": PWM("PE12", 1, 1),
"PWM2": PWM("PE11", 1, 2),
# 'PWM3' : PWM('PA9', 1, 2),
"PWM3": PWM("PA10", 1, 3),
"PWM4": PWM("PE14", 1, 4),
"PWM5": PWM("PB8", 4, 3),
"PWM6": PWM("PB9", 4, 4),
}
# Generate a 1KHz square wave with 50% cycle on the following PWM.
for k, pwm in pwms.items():
tim = Timer(pwm.tim, freq=1000) # Frequency in Hz
ch = tim.channel(pwm.ch, Timer.PWM, pin=Pin(pwm.pin), pulse_width_percent=50)
while True:
time.sleep_ms(1000)