Agx Fan

[77097962]

agx32g 模组，L4T35.1 ， 系统启动后， 如何设置让风扇一直处于转动状态？

[KevinFFF]

Hi 77097962,

Please run the following command first to disable nvfancontrol service.

$ systemctl stop nvfancontrol

and then run the following command to control the speed of fan.

$ echo XXX > sys/devices/platform/pwm-fan/hwmon/hwmon3/pwm1

[77097962]

thanks

[77097962]

如果是L4T32.6.1，ubuntu18.04系统，是哪个程序控制风扇？ 因为我发现18.04系统中风扇路径是这样的/sys/devices/pwm-fan/target_pwm’， 直接给这个文件赋值255吗？ sudo sh -c ‘echo 255 > /sys/devices/pwm-fan/target_pwm’ ； 另外我想让设备重启后也是一直转，不用每次输入这个命令，如何让他一直生效？

[KevinFFF]

yes, you could also use echo command to that node for fan.

Please share the result of following command on your board.

$ systemctl --type=service --state=running|grep fan

[77097962]

The return value is null

[KevinFFF]

@77097962

sudo sh -c ‘echo 255 > /sys/devices/pwm-fan/target_pwm’

Could this command work on your board with R32.6.1?

Please refer to the following topic to control fan with R32.

Fan control

Hi, I’d like to know how can I change the fan mode. I’ve found this commands in this forum (Jetson Nano Fanhttps://devtalk.nvidia.com/default/topic/1049521/jetson-nano/jetson-nano-fan/post/5326445/#5326445): ON : sudo sh -c 'echo 255 > /sys/devices/pwm-fan/target_pwm' OFF : sudo sh -c 'echo 0 > /sys/devices/pwm-fan/target_pwm' But I’ve seen that checking the file /sys/bus/platform/devices/pwm-fan/pwm_rpm_table I get this table: (Index, RPM, PWM, RRU, RRD) (0, 0, 0, 40, 40) (1, 1000, 80, 2,…

If you want to it run automatically during boot up, you could just add the command to the script which would be run during boot up.