Scratch

Hello,

that's my first post here, so hi everybody    I'm writing a small extension to BYOB that will talk to the Arduino board over serial. I want BYOB to receive data from Arduino every 100ms (exact timing is not critical), so I thought I'll go with Morph stepping to do that. If I'm correct, I have to add a morph to the World, to use stepping. Unfortunately, when I try to do that, VM crashes and goes to emergency evaluator. What am I doing wrong? The code for test class is below:

Morph subclass: #StepTest
    instanceVariableNames: 'c1 '
    classVariableNames: ''
    poolDictionaries: ''
    category: 'Test'

StepTest>>initialization

initialize
    super initialize.
    c1 _ 0.
    World addMorphBack: self

It crashes when I call StepTest new. Oh, BTW, with normal Scratch it works just fine.

Of course, if there's a way to do some periodic activity without stepping, it will be ok also.