26 lines
750 B
Bash
Executable File
26 lines
750 B
Bash
Executable File
#!/bin/bash
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echo 0 > /sys/devices/platform/fd8b0030.pwm/pwm/pwmchip*/export
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echo 10000 > /sys/devices/platform/fd8b0030.pwm/pwm/pwmchip*/pwm0/period
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echo 8000 > /sys/devices/platform/fd8b0030.pwm/pwm/pwmchip*/pwm0/duty_cycle
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echo normal > /sys/devices/platform/fd8b0030.pwm/pwm/pwmchip*/pwm0/polarity
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echo 1 > /sys/devices/platform/fd8b0030.pwm/pwm/pwmchip*/pwm0/enable
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sleep 3
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while true
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do
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a=$(cat /sys/class/thermal/thermal_zone0/temp)
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time=$(date)
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pwm=$(echo ${a} | awk '{printf("%d",$1*0.15-800)}')
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if (( $pwm > 8500 ))
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then
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pwm=8500
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elif (( $pwm < 5000 ))
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then
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pwm=5000
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fi
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echo ${pwm} > /sys/devices/platform/fd8b0030.pwm/pwm/pwmchip*/pwm0/duty_cycle
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echo [${time}] Thermal value: ${a}, write fan PWM cycle ${pwm}
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sleep 5
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done
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