Hi, I'm using fancontrol on a NanoPi M4 having a PWM controlled fan. This is the configuration I'm using: INTERVAL=10 FCTEMPS=/sys/class/pwm/pwmchip1/pwm0/duty_cycle=/sys/class/hwmon/hwmon1/temp1_input MINTEMP=/sys/class/pwm/pwmchip1/pwm0/duty_cycle=45 MAXTEMP=/sys/class/pwm/pwmchip1/pwm0/duty_cycle=70 MINSTART=/sys/class/pwm/pwmchip1/pwm0/duty_cycle=1500000 MINSTOP=/sys/class/pwm/pwmchip1/pwm0/duty_cycle=1500000 MAXPWM=/sys/class/pwm/pwmchip1/pwm0/duty_cycle=10000000 This is effective only after sysfs has been configured: PWM=0 CHIP=1 POLARITY=normal PERIOD=10000000 echo $PWM > /sys/class/pwm/pwmchip$CHIP/export echo $PERIOD > /sys/class/pwm/pwmchip$CHIP/pwm$PWM/period echo $POLARITY > /sys/class/pwm/pwmchip$CHIP/pwm$PWM/polarity echo 1 > /sys/class/pwm/pwmchip$CHIP/pwm$PWM/enable Additional caveat, fancontrol accepts PWM values up to 255 while my configuration works iff such value is 1500000. Therefore I have to comment out the max PWM value check in the fancontrol script. Is this the best way to achieve the result? Would you accept a patch to improve fancontrol and handle this situation in a nicer way? Kind regards, Domenico -- rsa4096: 3B10 0CA1 8674 ACBA B4FE FCD2 CE5B CF17 9960 DE13 ed25519: FFB4 0CC3 7F2E 091D F7DA 356E CC79 2832 ED38 CB05
