68 lines
1.1 KiB
Bash
68 lines
1.1 KiB
Bash
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SYS_FILE=/sys/class/gpio
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mt_gpio_export()
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{
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pin=$1
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let pin=pin+411 ### gpio base 411 ###
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if [ ! -f ${SYS_FILE}/export ]; then
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echo "${SYS_FILE}/export file is not present"
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exit 1
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fi
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echo "${pin}" > ${SYS_FILE}/export
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return 0
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}
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mt_gpio_dir()
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{
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pin=$1
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let pin=pin+411 ### gpio base 411 ###
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dir=$2
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if [ ! -f ${SYS_FILE}/gpio${pin}/direction ]; then
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echo "${SYS_FILE}/gpio${pin}/direction is not present"
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exit 1
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fi
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echo "${dir}" > ${SYS_FILE}/gpio${pin}/direction
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return 0
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}
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mt_gpio_out()
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{
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pin=$1
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let pin=pin+411 ### gpio base 411 ###
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out=$2
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if [ ! -f ${SYS_FILE}/gpio${pin}/value ]; then
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echo "${SYS_FILE}/gpio${pin}/value is not present"
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exit 1
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fi
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echo "${out}" > ${SYS_FILE}/gpio${pin}/value
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return 0
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}
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mt_gpio_in()
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{
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pin=$1
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let pin=pin+411 ### gpio base 411 ###
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if [ ! -f ${SYS_FILE}/gpio${pin}/value ]; then
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echo "${SYS_FILE}/gpio${pin}/value is not present"
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exit 1
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fi
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result=`cat ${SYS_FILE}/gpio${pin}/value`
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if [ ${result} == "0" ] ; then
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return 0
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else
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return 1
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fi
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}
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