Minecraft - Planter Turtle

function performPlanting()
    -- get seeds
    turtle.suck()

    -- move to the initial planting position
    moveToPlant()

    -- perform planting
    plantFarm(6,9)

    -- return to home
    returnHome()
end

function moveToPlant()--{{{
    turtle.turnRight()
    forward(2)
    moveUp(4)
    turtle.turnRight()
    forward(2)
    turtle.turnRight()
    forward(2)
end--}}}

function plantFarm(rowLength, rows, direction)--{{{
    if direction == nil then
        direction = "right"
    end
    for row = 1, rows do
        for count = 1, rowLength do
            -- plant crop
            turtle.placeDown()

            -- move forward
            forward()
        end

        if row ~= rows then
            -- turn at end of row
            turtle.placeDown()
            if direction == "right" then
                turtle.turnRight()
                forward(1)
                turtle.turnRight()
                direction = "left"
            else
                turtle.turnLeft()
                forward(1)
                turtle.turnLeft()
                direction = "right"
            end
        end
    end
end--}}}

function returnHome()--{{{
    turtle.placeDown()
    turnAround()
    forward(8)
    turtle.turnRight()
    forward(6)
    moveDown(4)
    turtle.turnRight()
    forward(2)
    turtle.turnRight()
end--}}}

function forward(distance)--{{{
    if distance == nil then
        distance = 1
    end
    for count = 1, distance do
        local moved = false
        while not moved do
            moved = turtle.forward()
        end
    end
end--}}}

function moveUp(distance)--{{{
    if distance == nil then
        distance = 1
    end
    for count = 1, distance do
        local moved = false
        while not moved do
            moved = turtle.up()
        end
    end
end--}}}

function moveDown(distance)--{{{
    if distance == nil then
        distance = 1
    end
    for count = 1, distance do
        local moved = false
        while not moved do
            moved = turtle.down()
        end
    end
end--}}}

function turnAround()--{{{
    turtle.turnRight()
    turtle.turnRight()
end--}}}

local redstoneEventCount = 0
local justPlanted = false
turtle.select(1)

while true do
    eventName, event1, event2, event3 = os.pullEvent("redstone")

    if eventName == "redstone" then
        if justPlanted == false then
            redstoneEventCount = redstoneEventCount + 1
        else
            justPlanted = false
        end
        print("Redstone Event Count == " .. redstoneEventCount)
        if redstoneEventCount == 2 then
            print("Waiting for seeds")
            os.sleep(10)
            print("Planting")
            performPlanting()
            print("finished planting")
            redstoneEventCount = 0
            justPlanted = true
        end
    end

end