oes/oes plus风扇开关控制

[xhynice]

OES Plus 风扇控制脚本 (GPIO Fan Control)

硬件信息

• 设备：OES Plus
• 系统：Armbian (ophub)
• 风扇：GPIO 557 控制，开关型（无 PWM 调速）

问题

刷 Armbian 后风扇不转，内核 gpio-fan 驱动加载后 GPIO 能拉高，
但风扇实际不转。需要卸载内核驱动后直接控制 GPIO 才生效。
来自https://www.right.com.cn/forum/forum.php?mod=viewthread&tid=8474045&highlight=oes

脚本

#!/bin/bash
GPIO=557
HIGH_TEMP=50
LOW_TEMP=40
INTERVAL=5

sudo rmmod gpio_fan 2>/dev/null

if [ ! -d /sys/class/gpio/gpio$GPIO ]; then
    echo $GPIO | sudo tee /sys/class/gpio/export
fi

echo out | sudo tee /sys/class/gpio/gpio$GPIO/direction

FAN_STATE=0

get_temp() {
    awk '{print $1/1000}' /sys/class/thermal/thermal_zone0/temp
}

echo "Fan control started (HIGH=${HIGH_TEMP}°C LOW=${LOW_TEMP}°C)"

while true; do
    TEMP=$(get_temp)
    printf "[%s] TEMP=%.1f°C FAN=%s\n" \
        "$(date +%H:%M:%S)" "$TEMP" \
        "$([ $FAN_STATE -eq 1 ] && echo ON || echo OFF)"

    if (( $(echo "$TEMP >= $HIGH_TEMP" | bc -l) )); then
        if [ "$FAN_STATE" -eq 0 ]; then
            echo 1 | sudo tee /sys/class/gpio/gpio$GPIO/value > /dev/null
            FAN_STATE=1
            echo ">>> FAN ON"
        fi
    elif (( $(echo "$TEMP <= $LOW_TEMP" | bc -l) )); then
        if [ "$FAN_STATE" -eq 1 ]; then
            echo 0 | sudo tee /sys/class/gpio/gpio$GPIO/value > /dev/null
            FAN_STATE=0
            echo ">>> FAN OFF"
        fi
    fi

    sleep $INTERVAL
done

开机自启

sudo cp fan-control.sh /usr/local/bin/fan-control.sh
sudo chmod +x /usr/local/bin/fan-control.sh

sudo tee /etc/systemd/system/fan-control.service << 'EOF'
[Unit]
Description=OES Plus GPIO fan control
After=multi-user.target

[Service]
Type=simple
ExecStart=/usr/local/bin/fan-control.sh
Restart=always

[Install]
WantedBy=multi-user.target
EOF

sudo systemctl daemon-reload
sudo systemctl enable fan-control.service

温度效果

• 无风扇：~45°C
• 风扇开启后：~38°C