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Rockpi4/hardware/fan

< Rockpi4‎ | hardware
Revision as of 07:14, 17 June 2022 by Stephen (Talk | contribs)

    ROCK Pi 4 >  Hardware >  Fan

Introduction

Control fan example

echo 0 > /sys/class/pwm/pwmchip0/export
sleep 0.2
echo 40000 > /sys/class/pwm/pwmchip0/pwm0/period
sleep 0.2
echo 10000 > /sys/class/pwm/pwmchip0/pwm0/duty_cycle
sleep 0.2
echo normal >  /sys/class/pwm/pwmchip0/pwm0/polarity
sleep 0.2
echo 1 > /sys/class/pwm/pwmchip0/pwm0/enable