pymumu / fan-control-rock5b Goto Github PK

将pwm-fan加入设备树后,pwm export将会找不到
控制风扇会直接使用接口/sys/class/hwmon/hwmon1/pwm1,不需要再初始化任何pwm了

Not sure what happened but for some reason stayed on max even though temp dropped to 31'c

Didn't do any checks but had a rough script running.

#!/bin/bash
stress-ng -c 8 --vm 8 --vm-bytes 512M&
echo start > temp.txt
while true
do
	echo $(cat /sys/class/thermal/thermal_zone*/temp)
	echo $(cat /sys/class/thermal/thermal_zone*/temp) >> temp.txt
	echo $(date +"%T")
	echo $(date +"%T") >> temp.txt
	sleep 20
done

When I hot ctrl+c to escape the script the fan was already fast at 50c but heard up go up another notch and there it stuck even though temps where back down to 31c

PS the cpu freq buffs to get 2400000Mhz have turned this exceptionally cool SoC into a bit of a hot one.

Hello,

I'm running Armbian and this software won't start. I'm getting these errors:

$ sudo /usr/sbin/fan-control 
pwmchip: 0
gpio: 0
pwm-period: 20000
temp-map:
  speed: 0, temp: 20, duty: 8400, duration: 10
  speed: 1, temp: 50, duty: 9600, duration: 2
  speed: 2, temp: 60, duty: 10800, duration: 2
  speed: 3, temp: 70, duty: 16000, duration: 5
Failed to export GPIO, No such file or directory
Failed to export GPIO, No such file or directory
Failed to export GPIO, No such file or directory
Failed to export GPIO, No such file or directory
Failed to export GPIO, No such file or directory
Failed to export GPIO, No such file or directory
Failed to init GPIO

Looking at the source, I think it is trying to access the file /sys/devices/platform/fd8b0010.pwm/pwm/pwmchip0/pwm0/export (among others.) That directory exists only so far as /sys/devices/platform/fd8b0010.pwm/pwm/pwmchip0 and doesn't contain pwm0.

Listing that directory:

$ ls -al
total 0
drwxr-xr-x 3 root root    0 Jul 10 15:21 .
drwxr-xr-x 3 root root    0 Jul 10 15:21 ..
lrwxrwxrwx 1 root root    0 Jul 10 16:48 device -> ../../../fd8b0010.pwm
--w------- 1 root root 4096 Jul 10 15:21 export
-r--r--r-- 1 root root 4096 Jul 10 16:48 npwm
drwxr-xr-x 2 root root    0 Jul 10 16:48 power
lrwxrwxrwx 1 root root    0 Jul 10 15:21 subsystem -> ../../../../../class/pwm
-rw-r--r-- 1 root root 4096 Jul 10 15:21 uevent
--w------- 1 root root 4096 Jul 10 15:21 unexport

I'm using Armbian Bookworm, Minimal CLI which includes no firmware installed automatically. So, could I be missing required firmware? Or, could the needed file be elsewhere?

Thanks,
Richard

hello,

I tried your program on my rock 5a and it doesn't work
is there anything to activate it?

regards

Thank you, @pymumu, for this great little programme. It works well.
Please consider submitting it to an app store like Snapcraft so we can auto-update whenever there is a new version.

大佬，我的系统为Ubuntu22.04， 开机后风扇自动开启，使用您这个工程也停止不了它的运行

I used Armbian and added your fan-control software

At first boot, it works well, but after that when I check the log, I found that it cannot run correctly.

I have no idea about hot to check about that, but any idea about that ?