How to interrupt from a infinite loop ??

kevinspace

Hello everybody~

How to interrupt from a infinite loop(repeat) by push button??

And another question is how to switch between two infinite loops??

I tried to set a condition of interrupt in the repeat loop but it seems like didn't.

For example : I want to blink the LED always, and if it encounter a condition of interrupt, the blinking will be stop.

Another case is that I want to select any oneinfinite loops, how to write the code to switch it??

Are there any simple example??

Thanks a lot.

StefanL38

HI Kevin,

post your code or a more derialed description of what you want to do in the end

there are a lot of ways to do something like if condition stop blinking

for too infinite loops

code ONE loop and some if-conditions

if condtion 1 true
"do things1"

if condtion 2 true
"do things2"

really tell us what you want to do in the end
then good solutions can be found

for stopping a infinite loop see command quit PropManual page 186

best regards

Stefan

Mike Green

Strictly speaking, you can't force a Prop loop to finish or switch to some other loop. The only thing one cog can do to another is to reset it completely, forcing it to stop running. All the registers in the cog are cleared and the cog's memory can't be accessed. If you start up the cog, the entire contents of the cog's memory gets replaced.

That said, as Stefan mentioned, you can write your loops so they'll stop when any of several conditions are met. There are also ways to use the ABORT statement and the "catch" operator ("\") in some circumstances for a subroutine to force a loop in its caller to exit to a higher call level.

Dave Hein

It would look something like this

con
  LED = 0 ' LED pin number
  BUTTON = 1 ' Button pin number

dat
  prev long 0

pub main
  repeat
    loop1
    loop2

pub loop1
  repeat
    waitcnt(clkfreq/10+cnt)
    outa[LED] ^= 1
    if ButtonPush
      quit

pub loop2
  repeat
   waitcnt(clkfreq/10+cnt)
    if ButtonPush
      quit

pub ButtonPush | val
  val := ina[BUTTON]
  if val and not prev
    result := 1
  prev := val

Ed T

You could also incorporate terminating the loop in the repeat with:

pub loop1
    repeat while ButtonPush==0
        waitcnt(clkfreq/10+cnt)
        outa[LED] ^= 1

Don't forget a Dira[LED]~~ also

- Ed

kevinspace

Thanks for everybody~~

I have tried Dave's code and added the "dira[LED]~~" That to be successful.