<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’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=""><img apple-inline="yes" id="0FD9ED5D-36D1-44CD-8F45-93A0F9C165AA" width="1047" height="281" src="cid:5C0E4576-DE90-45C8-A869-2798346799F3" class=""><img apple-inline="yes" id="6204EC01-ACD9-42BF-827A-3247E7A9F41E" width="939" height="475" src="cid:988B85AB-D312-473B-8222-8C3A742193FA" class=""></div><div class=""><div class=""><br class=""><div><br class=""><blockquote type="cite" class=""><div class="">On 22 Mar 2020, at 11:52, Christof Ressi <<a href="mailto:info@christofressi.com" class="">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="">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="">_______________________________________________<br class="">Pd-dev mailing list<br class=""><a href="mailto:Pd-dev@lists.iem.at" class="">Pd-dev@lists.iem.at</a><br class="">https://lists.puredata.info/listinfo/pd-dev<br class=""></blockquote><br class=""><br class="">_______________________________________________<br class="">Pd-dev mailing list<br class=""><a href="mailto:Pd-dev@lists.iem.at" class="">Pd-dev@lists.iem.at</a><br class="">https://lists.puredata.info/listinfo/pd-dev<br class=""></blockquote></blockquote><br class=""><br class=""><br class="">_______________________________________________<br class="">Pd-dev mailing list<br class=""><a href="mailto:Pd-dev@lists.iem.at" class="">Pd-dev@lists.iem.at</a><br class="">https://lists.puredata.info/listinfo/pd-dev<br class=""></div></div></blockquote></div><br class=""></div></div></body></html>