<div dir="ltr"><div dir="ltr"><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, Apr 30, 2021 at 2:07 PM Dave DeGroote <<a href="mailto:Dave.DeGroote@astrobotic.com">Dave.DeGroote@astrobotic.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
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<p><span style="font-size:12pt">Hello,</span></p>
<p><span style="font-size:12pt">I'm trying to get RTEMS running using SMP on a Leon3/gr712rc (2 cores). I have it partially running, but it crashes intermittently on printf's. Can anyone tell me if there's a way to make printf() SMP safe? printf appears
to use termios which uses rtems_mutex_init() and rtems_binary_semaphore_init() which I don't think are SMP safe (but I'm also new to this so I'm not sure).</span></p></div></div></blockquote><div><br></div><div>Those are SMP safe. I suspect you are using the Classic API (e.g. rtems_task_) and by default they do not have floating point enabled. You probably just need to enable the floating point attribute on the task create calls (or for the init task).</div><div><br></div><div><a href="https://docs.rtems.org/branches/master/c-user/task/directives.html#rtems-task-create">https://docs.rtems.org/branches/master/c-user/task/directives.html#rtems-task-create</a></div><div><br></div><div>See configuring a system chapter for the init task setting.</div><div><br></div><div>If you provide the exception, we would know for sure.</div><div><br></div><div>--joel </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div id="gmail-m_3300640327971901434divtagdefaultwrapper" style="font-size:12pt;color:rgb(0,0,0);font-family:Calibri,Helvetica,sans-serif,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols" dir="ltr"><p><br>
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<p><span style="font-size:12pt">Thanks!</span></p>
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<td><strong style="color:rgb(226,39,38);font-size:14px;display:inline-block;margin-bottom:3px">Dave DeGroote</strong><br>
<p style="margin-right:0px;margin-bottom:3px;margin-left:0px">Flight Software Engineer</p>
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