ON :
'''bash
sudo sh -c 'echo 255 > /sys/devices/pwm-fan/target_pwm'
'''
OFF :
'''bash
sudo sh -c 'echo 0 > /sys/devices/pwm-fan/target_pwm'
'''
(slowly turned off)
'''bash
sudo sh -c 'echo 255 > /sys/devices/pwm-fan/target_pwm'
'''
'''bash
sudo sh -c 'echo 0 > /sys/devices/pwm-fan/target_pwm'
'''
(slowly turned off)
不知道你卖树莓派4B了么?不知道你们是否尝试在树莓派4b上用wiringpi的库,反正是官方的不好用。
那么你该怎么办?
sudo apt -y purge wiringpi
hash -r
cd /tmp
wget https://project-downloads.drogon.net/wiringpi-latest.deb
sudo dpkg -i wiringpi-latest.deb
gpio readall
gpio -v
正常显示
wiringpi-latest.deb.tar
下载后上传树莓派,通过命令
tar -xf wiringpi-latest.deb_.tar.gz
dpkg -i wiringpi-latest.deb