2、安装RPI.GPIO # pip install rpi.gpio 3、GPIO 控制PWM风扇 ### 交互模式演示代码 # python import RPi.GPIO as GPIO # GPIO 设置 GPIO.setmode(GPIO.BCM) GPIO.setup(14,GPIO.OUT) # 高电平,开风扇 GPIO.output(14,GPIO.HIGH) # 低电平,关风扇 GPIO.output(14,GPIO.LOW) # 退出并清理 GPIO.cl...
p.ChangeDutyCycle(dc)# 范围:0.0 <= dc >= 100.0 停止PWM: 1 p.stop() 注意,如果实例中的变量“p”超出范围,也会导致 PWM 停止。 以下为使 LED 每两秒钟闪烁一次的示例: 1 2 3 4 5 6 7 8 9 importRPi.GPIO as GPIO GPIO.setmode(GPIO.BOARD) GPIO.setup(12, GPIO.OUT) p=GPIO.PWM(12,0....
问属性错误: RPi.GPIO.PWM没有属性'ChangeDutyCycle‘EN版权声明:本文内容由互联网用户自发贡献,该文观点仅代表作者本人。本站仅提供信息存储空间服务,不拥有所有权,不承担相关法律责任。如发现本站有涉嫌侵权/违法违规的内容, 请发送邮件至 举报,一经查实,本站将立刻删除。
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We have a RPi 400 (and 4) that is used as a controller using Python. GPIO 18 (pin 12) is used as a variable clock source to create a 1Hz to 10KHz programmable clock. Using the standard RPi GPIO PWM method produces a clock that has quite a bit of somewhat random period variations,...
GPIO.setmode(GPIO.BOARD) GPIO.setup(12, GPIO.OUT) p = GPIO.PWM(12, 0.5) p.start(1) input('点击回车停止:') # 在 Python 2 中需要使用 raw_input p.stop() GPIO.cleanup() 以下为使 LED 在亮/暗之间切换的示例: import time import RPi.GPIO as GPIO ...