38 lines
761 B
Bash
Executable File
38 lines
761 B
Bash
Executable File
#!/bin/sh
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# Check number of args
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if [ ${#} -ne 1 ]; then
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echo "Usage: $(basename ${0}) [1 for on, 0 for off]"
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exit 1
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fi
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# Check enable arg
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enable=${1}
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if [ ${enable} -eq 1 ]; then
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# Turn ON only if volume is not null
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if [ "$(volume_get)" -ne "0" ]; then
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echo "Turning audio amplifier ON"
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else
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exit 0
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fi
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elif [ ${enable} -eq 0 ]; then
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echo "Turning audio amplifier OFF"
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else
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echo "Usage: $(basename ${0}) [1 for on, 0 for off]"
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exit 1
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fi
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# PA enable GPIO
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GPIO_PF6=166
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# Export GPIO
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if [ ! -d /sys/class/gpio/gpio${GPIO_PF6} ]; then
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echo ${GPIO_PF6} > /sys/class/gpio/export
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fi
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# Enable/disable cmd
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echo "out" > /sys/class/gpio/gpio${GPIO_PF6}/direction
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echo ${enable} > /sys/class/gpio/gpio${GPIO_PF6}/value
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exit 0
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