<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">I don’t use PDINSTANCE, but after checking some online stuff I thought maybe the size of the stack is the problem so I’ve changed it from 0x400 to 0x4000 and heap size from 0x200 to 0x2000, but no success.<div class="">Still - I guess there is something going on with the memory so I’ll be checking this some more.</div><div class=""><img apple-inline="yes" id="B3F317AE-D35F-4748-A74C-D96BCF4F0A05" width="582" height="287.5" src="cid:0F0A8671-4F4E-471B-81BD-BB2AA9D2DC33" class=""></div><div><br class=""><blockquote type="cite" class=""><div class="">On 22 Mar 2020, at 18:01, Christof Ressi <<a href="mailto:info@christofressi.com" class="">info@christofressi.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class="">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" class="">
<div class=""><p class="">Don't worry too much about *vp for now. The fault actually occurs
in m_class.c:506.</p><p class="">Do you use PDINSTANCE?<br class="">
</p><p class="">Also, you can check stm32f4xx_it.c:90 to see what kind of error
you're getting.</p><p class="">How much memory do you have available?<br class="">
</p><p class="">Christof<br class="">
</p>
<div class="moz-cite-prefix">On 22.03.2020 17:15, Boštjan Jerko
wrote:<br class="">
</div>
<blockquote type="cite" cite="mid:944E473B-6963-40F1-847A-1369A682E80C@gmail.com" class="">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" class="">
I’m attaching images from debugger. The strange thing is that
type1 is A_DEFFLOAT, but *vp is still A_NULL. Guess I need to work
(at least) on that.
<div class="">That way the loop doesn’t even get started.</div>
<div class="">So one image shows values of type1 and *vp and the
other is stack.</div>
<div class=""><br class="">
</div>
<div class="">I’m using stm32f429 and Segger programmer with their
Ozone debugger.</div>
<div class=""><br class="">
</div>
<div class="">B.</div>
<div class=""><br class="">
</div>
<div class=""><span id="cid:part1.BAF0769F.1B088BF4@christofressi.com"><vp_value.png></span><span id="cid:part2.A43806B0.0807CC49@christofressi.com"><stack.png></span></div>
<div class="">
<div class=""><br class="">
<div class=""><br class="">
<blockquote type="cite" class="">
<div class="">On 22 Mar 2020, at 11:52, Christof Ressi
<<a href="mailto:info@christofressi.com" class="" moz-do-not-send="true">info@christofressi.com</a>>
wrote:</div>
<br class="Apple-interchange-newline">
<div class="">
<div class="">
<blockquote type="cite" class="">and then in function
class_new vp is empty so while (*vp) doesn’t go
through it<br class="">
</blockquote>
What do you mean by "empty", when exactly is "vp"
empty and how did you test?<br class="">
<br class="">
"vp" is initially set to "type1", which in the case of
pdint_setup() is "A_DEFFLOAT". So it would be very
strange if "vp" was initially empty in the case
pdint_setup(). The while loop sets "vp" to the next
vararg and increments the pointer until it encounters
"A_NULL" (= 0). So finally, "*vp" will always be 0, if
that is what you mean by empty.<br class="">
<br class="">
Or did you mean "vp" itself is NULL? This would be
even stranger, because it points to the stack.<br class="">
<br class="">
Do your run the code in a debugger? If yes, post the
stack trace. If not, well, use a debugger :-)<br class="">
<br class="">
BTW, which device are you using?<br class="">
<br class="">
Christof<br class="">
<br class="">
On 22.03.2020 09:13, Boštjan Jerko wrote:<br class="">
<blockquote type="cite" class="">Hi Christof,<br class="">
<br class="">
the problem is that I don’t really know what happens
but it goes something like that:<br class="">
<br class="">
calling pd_init -> pd_init_systems ->
conf_init -> x_connective_setup -> pdint_setup<br class="">
<br class="">
and then in function class_new vp is empty so while
(*vp) doesn’t go through it and after exiting
class_new the microcontroller stops with a hard
error.<br class="">
So maybe the question is really - should the vp be
empty and if not - why is that happening?<br class="">
<br class="">
B.<br class="">
<br class="">
<blockquote type="cite" class="">On 21 Mar 2020, at
13:58, Christof Ressi <<a href="mailto:info@christofressi.com" class="" moz-do-not-send="true">info@christofressi.com</a>>
wrote:<br class="">
<br class="">
Hi,<br class="">
<br class="">
<blockquote type="cite" class="">The code compiles
but I get the error when running in the
pdint_setup where pdint_new in class_new breaks
with an error.<br class="">
My idea is to first try to understand the code
hence my question:<br class="">
</blockquote>
I think first you should post the error you get
;-) Maybe the problem is trivially solved without
having to look at code for class_new() at all.<br class="">
<blockquote type="cite" class="">What does
class_new do?<br class="">
</blockquote>
It creates a new Pd class (t_pd). The class
contains all the methods and some metadata. It
also registers a creator function in
pd_objectmaker, which is the factory object for
all classes.<br class="">
<br class="">
When you type "[foo 0]" you really send a message
"obj <x> <y> foo 0" to the canvas,
which in turn sends a message "foo 0" to
pd_objectmaker, which finally returns a newly
created instance (given that it can find a creator
method for "foo").<br class="">
<br class="">
But again, I think the problem is likely trivial
and those implementation details shouldn't concern
you, unless you want to learn about Pd internals,
of course :-)<br class="">
<br class="">
Christof<br class="">
<br class="">
On 21.03.2020 13:20, Boštjan Jerko wrote:<br class="">
<blockquote type="cite" class="">Hi,<br class="">
<br class="">
I’m trying to port libpd to stm32. I don’t need
gui so working only on connecting pd script to
the output (which is DAC from stm32 in my case).<br class="">
The code compiles but I get the error when
running in the pdint_setup where pdint_new in
class_new breaks with an error.<br class="">
My idea is to first try to understand the code
hence my question:<br class="">
What does class_new do?<br class="">
<br class="">
My guess is connecting puredata command with a
function in C. Am I correct or completely
missing the point?<br class="">
<br class="">
Thanks.<br class="">
<br class="">
B.<br class="">
<br class="">
<br class="">
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