Hello

When I do a Lua program to display live readings from sensors via var.recall, I get a delay from the happening of an event to the display of that event. Why is that? How can I solve this?

For exemple, if I use a motion detector and move an object, only about 1s of moving it the Lua shows the information on screen.

Thanks

Hello again.

Here is the code

"
bridge1=image.new(_R.IMG.bs)
bridge2=image.new(_R.IMG.bola2)
timer.start(0.01)
function on.timer()
    local pc=var.recall("meter.posição")
    local vc=var.recall("meter.velocidade")
    local ac=var.recall("meter.aceleração")
    function on.paint(gc)
    gc:drawImage(bridge1,0,0)
    gc:setColorRGB(250,250,250)
    gc:drawString("Posição-> "..pc,22,22)
    gc:drawString("Velocidade-> "..vc,22,44)
    gc:drawString("Aceleração-> "..ac,22,66)
    gc:drawImage(bridge2,200,28+70*pc)
    platform.window:invalidate()
    gc:setColorRGB(183,119,103)
    gc:fillArc(195+18*pc,203,10/pc,8,0,360)
    end
end
"

What it does is to draw a ball (image on bridge2) up and down according to the position the sensor grabs. Only problem is that there is a delay on what we see (looking at the real object) and the output of the Lua.

Thanks

For future reference, you can use the handy little "code" tags  to insert code into a post, just click the "#" symbol when writing a post. It looks like this:

bridge1=image.new(_R.IMG.bs)
bridge2=image.new(_R.IMG.bola2)
timer.start(0.01)

function on.timer()
    local pc = var.recall("meter.posição")
    local vc = var.recall("meter.velocidade")
    local ac = var.recall("meter.aceleração")
    platform.window:invalidate()
end

function on.paint(gc)
    gc:drawImage(bridge1, 0, 0)
    gc:setColorRGB(250, 250, 250)
    gc:drawString("Posição-> "..pc, 22, 22)
    gc:drawString("Velocidade-> "..vc, 22, 44)
    gc:drawString("Aceleração-> "..ac, 22, 66)
    gc:drawImage(bridge2, 200, 28+70*pc)
    gc:setColorRGB(183, 119, 103)
    gc:fillArc(195+18*pc, 203, 10/pc, 8, 0, 360)
end
Also, just to clarify, "platform.window:invalidate()" essentially calls the on.paint routine, so putting it inside of on.paint won't do you much good

Good luck!

I liked the "Ow...." comment a lot!

We were all beginners once...