using while and loop and variable in Macro

CrazyCreator

I came up with a few lines of code with which I would like to try to let the neopixel stripes connected to the MB6HC "breathe" as long as the printer is idle.

Unfortunately, my knowledge is currently more or less at NULL ... so I have absolutely no idea whether my lines of code work or whether they are in the correct syntax.

I would prefer the whole thing as a macro, which starts when the printer is switched on and ends as soon as I turn on the heating and / or a print is running.

maybe someone can help me with learning and solving.

thanks

Declare variable
var <counter> = <int>
var <down> = <bool>

Fill variable
var.counter = 1
var.down = false

while <heater.0 < 40>

	if <var.counter> == 255
		<var.down> = true
	if <var.counter> == 0
		<var.down> = false 	

	if <var.down> == false
		M150 …. P<var.counter> F0
		var.counter = var.counter+1
	if <var.down> == true
		M150 …. P<var.counter> F0
		var.counter = var.counter-1

dc42

@crazycreator something like this may work if you put it in daemon.g assuming that sensor 0 is the bed thermistor:

var counter = 1
var down = false
 
while sensors.analog[0].lastReading < 40
	if var.down
		set var.counter = var.counter-1
		M150 …. P<var.counter> F0
		if var.counter == 255
			set var.down = true
	else
		set var.counter = var.counter+1
		M150 …. P<var.counter> F0
		if var.counter == 0
			set var.down = false 	
	G4 P100

CrazyCreator

@dc42 Many, many thanks for the feed, I have something to try and test and expand on. thanks.

Is it imperative that I have to run it in a deamon.g, or could I also start it in a macro ... for testing the script or so.

So the "breathing" of the led strip in idle should of course always run.
I only ask if I want to program something similar for something else.

First question:
if I want to check var.down for true or false, then

if var.down

is enough to check the condition?

/EDIT
When I create a macro with this content:

M150 X1 ; Define RGB NeoPixel (default in RRF 3.2 and later)

var counter = 1
var down = false
 
while sensors.analog[0].lastReading < 40
	if var.down
		set var.counter = var.counter-1
		M150 R255 U0 B0 S20 P<var.counter> F0
		if var.counter == 255
			set var.down = true
	else
		set var.counter = var.counter+1
		M150 R255 U0 B0 S20 P<var.counter> F0
		if var.counter == 0
			set var.down = false 	
	G4 P100

Then nothing happens when I start it ...

CrazyCreator

@dc42
can you explain to me why nothing happens when i start the macro?

fcwilt

@crazycreator said in using while and loop and variable in Macro:

can you explain to me why nothing happens when i start the macro?

if sensors.analog[0].lastReading >= 40 then the while loop will not run.

Frederick

CrazyCreator

@fcwilt
The heating is not on ... or there is not even one installed. Only one temperature sensor is connected.

How can I display, for check, the result of sensors.analog[0].lastReading ???

Bildschirmfoto 2021-11-20 um 18.06.32.png

is this the right value? rounding in dwc I see 23°C

fcwilt

@crazycreator said in using while and loop and variable in Macro:

@fcwilt
The heating is not on ... or there is not even one installed. Only one temperature sensor is connected.

How can I display, for check, the result of sensors.analog[0].lastReading ???

right before the line containing the while put this:

echo sensors.analog[0].lastReading

It will display a message showing the value. While the message will go away after a few seconds you can still see the result in the DWC Console.

Frederick

CrazyCreator

@fcwilt said in using while and loop and variable in Macro:

echo sensors.analog[0].lastReading

i See the message in dwc but this is the only thing.

my macro:

; R=Red / U=Green / B=Blue / P=Brightness (0-255)
M150 X1 ; Define RGB NeoPixel (default in RRF 3.2 and later)

var counter = 150
var down = true
echo sensors.analog[0].lastReading


 
while sensors.analog[0].lastReading < 40
	if var.down
		set var.counter = var.counter-1
		M150 R255 U0 B0 S20 P<var.counter> F0
		if var.counter == 255
			set var.down = true
	else
		set var.counter = var.counter+1
		M150 R255 U0 B0 S20 P<var.counter> F0
		if var.counter == 0
			set var.down = false 	
	G4 P100

When I change P<var.counter> to P155 the script is running actually endless
and always in the same if ....

I think the variable var.counter will not be changed.

because if I change var down = true and var.down = false then it changes from the if to the else but it then gets stuck in it.

fcwilt

@crazycreator

If the while loop is not ending it is either because the sensor reading is not changing OR the firmware does not update the sensor reading in a while loop.

You could put code in daemon.g but that only runs once every 10 seconds.

Frederick

CrazyCreator

@fcwilt
But that would be strange if the while loop only continues when the value of the sensor has changed.

the condition says if the value is less than 40 then run.

fcwilt

@crazycreator said in using while and loop and variable in Macro:

@fcwilt
But that would be strange if the while loop only continues when the value of the sensor has changed.

the condition says if the value is less than 40 then run.

What was the value displayed by the echo statement when you ran the macro?

Frederick

CrazyCreator

@fcwilt 23

 
while sensors.analog[0].lastReading < 40
	if var.down
		set var.counter = var.counter-1
		M150 R255 U0 B0 S20 P<var.counter> F0
		echo var.counter
		if var.counter == 0
			set var.down = false
	else
		set var.counter = var.counter+1
		M150 R255 U0 B0 S20 P<var.counter> F0
		**echo var.counter**		
		if var.counter == 255
			set var.down = true 	
	G4 P50

if I write an echo IN the loop and display the value of var.counter, then the outputs are perfectly counted. exactly as it should be, but the light does not come on.

if instead of P <var.counter> a fixed number is written in, the light goes on ... but then of course it doesn't breathe

if P <var.counter> the correct spelling?

GeneRisi

@crazycreator Values passed to a macro are found using "param." parameter letter. So, if the macro was called with P155, you would access the value as param.p. You could do this in the beginning of your macro:

If exists(param.p)
   Set var.value = param.p
Else
   Set var.value = 150

Use var.value in the body of your macro.

Does that help ?

fcwilt

@crazycreator

Try using { and } instead of < and >.

Frederick

CrazyCreator

@fcwilt
it lives ... it breathes

the {} were the solution

many many thanks: D