study/linux/shell/other/switch.sh

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#!/bin/bash
# A touch-switch control program.
# the Raspberry Pi GPIO input pin number, namely the pin connected to the signal output pin of the toch-switch module
GPIO_PORT=8
# set the specified GPIO port to INPUT mode
gpio mode $GPIO_PORT in
while true
do
SWITCH_STATUS=`gpio read $GPIO_PORT`
if [ $SWITCH_STATUS -eq 1 ]; then
echo "Pressed @ `date +\"%F %T\"`"
fi
sleep 0.01
done