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Raspberry Pi car-controlling bash script
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#!/bin/bash | |
cd /sys/class/gpio | |
function left { | |
echo 4 > export | |
echo out > gpio4/direction | |
echo $1 > gpio4/value | |
echo 4 > unexport | |
} | |
function right { | |
echo 7 > export | |
echo out > gpio7/direction | |
echo $1 > gpio7/value | |
echo 7 > unexport | |
} | |
function forward { | |
left 1 && right 1 | |
} | |
function stop { | |
left 0 && right 0 | |
} | |
function turn_left { | |
right 0 && left 1 | |
} | |
function turn_right { | |
right 1 && left 0 | |
} | |
while true; do | |
read -t0.1 -n1 KEY | |
case "$KEY" in | |
"w") | |
forward | |
;; | |
"a") | |
turn_left | |
;; | |
"d") | |
turn_right | |
;; | |
"s") | |
stop | |
;; | |
esac | |
done | |
stop |
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