Move th Pi Rover

move.sh

#!/bin/bash
# Pi Rover: take a command and send data to the Python script

if [ "$#" == "0" ]; then
	echo "Usage: $0 movement speed"
	exit 1
fi

declare -ri minimal_speed=65
declare -ri delta_speed=75

declare -ri stop=0
declare -ri forward=1
declare -ri backward=2
declare -ri forward_left=3
declare -ri forward_right=4
declare -ri backward_left=5
declare -ri backward_right=6
declare -ri rotate_left=7
declare -ri rotate_right=8
declare -ri speed_left=9
declare -ri speed_right=10

# https://gist.github.com/f673425ce9a4ce37e142.git
declare -r send=/home/pi/send.py

rotation_speed () {
	local speed=$(($1 + 10))
	if ((speed>100)); then
		speed=100
	fi
	echo $speed

}

# echo `rotation_speed 10`

case $1 in
	$stop)
		$send 194 0 >/dev/null &
		$send 202 0 >/dev/null &
		;;
	$forward)
		$send 194 $2 >/dev/null &
		$send 202 $2 >/dev/null &
		;;
	$backward)
		$send 193 $2 >/dev/null &
		$send 201 $2 >/dev/null &
		;;
	$speed_left)
		if (($2>0)); then
			$send 202 $2 >/dev/null
		else
			$send 201 $((-$2)) >/dev/null
		fi
		;;
	$speed_right)
		if (($2>0)); then
			$send 194 $2 >/dev/null
		else
			$send 193 $((-$2)) >/dev/null
		fi
		;;
esac