motor = {}
motor[1] = {}
motor[1][1] = 0
motor[1][2] = 1
motor[1][3] = 2

motor[2] = {}
motor[2][1] = 3
motor[2][2] = 4
motor[2][3] = 5

for i,m in ipairs(motor) do
	for i,g in ipairs(m) do
		gpio.mode(g, gpio.OUTPUT)
		gpio.write(g, 1)
	end
end

function motor_dir(m, dir)
	if dir ~= 0 then
		gpio.write(motor[m][3], 1)
		gpio.write(motor[m][1], (1-dir)/2)
		gpio.write(motor[m][2], (1+dir)/2)
	else
		gpio.write(motor[m][3], 0)
	end
end