关于 PWM 详细介绍请参考PWM-API 文档.
from machine import Timer,PWM
tim = Timer(Timer.TIMER0, Timer.CHANNEL0, mode=Timer.MODE_PWM) ch = PWM(tim, freq=500000, duty=50, pin=boad_info.LED_G)
ch.duty(duty)
控制 LED_G 灯亮度
board_info 与板卡相关,不同板卡配置不同,使用前需要手动配置。
board_info
from machine import Timer,PWM import time from board import board_info from fpioa_manager import fm tim = Timer(Timer.TIMER0, Timer.CHANNEL0, mode=Timer.MODE_PWM) ch = PWM(tim, freq=500000, duty=50, pin=board_info.LED_G) duty=0 dir = True while True: if dir: duty += 10 else: duty -= 10 if duty>100: duty = 100 dir = False elif duty<0: duty = 0 dir = True time.sleep(0.05) ch.duty(duty)
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