http://forums.leaflabs.com/topic.php?id=1438 A place to share, learn, and grow... en-US Fri, 22 Jan 2016 00:06:29 +0000 http://bbpress.org/?v=1.0.2 q http://forums.leaflabs.com/search.php http://forums.leaflabs.com/topic.php?id=1438&page=3#post-20792 Mon, 05 Nov 2012 17:43:44 +0000 feurig 20792@http://forums.leaflabs.com/ <p>I just ran up the summon arm toolchain and newlib-1.20, syscalls.c is missing the _exit definition but otherwise it seems to work (on my bench mac even which is ppc and not supported by the CodeSourcery currently bundled with lib maple)</p> <p>ps: mbolivar where have you been? </p> http://forums.leaflabs.com/topic.php?id=1438&page=3#post-11769 Mon, 16 Jul 2012 14:46:47 +0000 gbulmer 11769@http://forums.leaflabs.com/ <p>Have you tried using the ST Micro ST-LINK/V2 with Texane ST-LINK <a href="https://github.com/texane/stlink" rel="nofollow">https://github.com/texane/stlink</a></p> <p>The source is freely available (AFAIK, Segger's gdb server is closed source), and it runs on Linux and Mac as well as Windows.</p> <p>AFAIK, ST Micro's ST-LINK/V2 is about 1/3rd the price of Segger's J-Link.<br /> In fact, you can get a SWD-only ST-LINK/V2 on a STM32F0Discovery board for $7.99 and that includes a free STM32F051 MCU, and a prototyping board. </p> http://forums.leaflabs.com/topic.php?id=1438&page=3#post-11730 Fri, 13 Jul 2012 19:57:10 +0000 jpnorair 11730@http://forums.leaflabs.com/ <p>1. I would recommend trying the Segger J-Link GDB server, which of course requires that you have a J-Link. JTAG/SWD seems to be the component that is most difficult to acquire for non-windows, but J-Link works on Mac/Linux.</p> <p>2. The Cortex M parts support only the Thumb2 ISA. So, you shouldn't notice any difference by adding "-mthumb" or not, assuming that GCC knows to use it implicitly for Cortex M compilations. If your code is being compiled into standard ARM32 ISA, it won't run on the Cortex M devices.</p> <p>I am installing Yagarto on my mac now. One of my embedded-dev partners has been running the Eclipse+Yagarto+JLinkGDB setup for some time on his MacBook Pro. I believe the target he has been using is an STM32F1 with 20/128. </p> http://forums.leaflabs.com/topic.php?id=1438&page=3#post-11095 Wed, 06 Jun 2012 03:05:16 +0000 mbolivar 11095@http://forums.leaflabs.com/ <p>just fyi, we also build with -mthumb: <a href="http://leaflabs.com/docs/arm-gcc.html#compiler-flags-used-by-libmaple" rel="nofollow">http://leaflabs.com/docs/arm-gcc.html#compiler-flags-used-by-libmaple</a> </p> http://forums.leaflabs.com/topic.php?id=1438&page=3#post-10904 Sun, 27 May 2012 08:20:44 +0000 blackswords 10904@http://forums.leaflabs.com/ <p>I found this in the GCC 4.6.2 documentation : </p> <p>-mthumb : Generate code for the Thumb instruction set. The default is to use the 32-bit ARM instruction set. This option automatically enables either 16-bit Thumb- 1 or mixed 16/32-bit Thumb-2 instructions based on the ‘-mcpu=name’ and ‘-march=name ’ options. This option is not passed to the assembler. If you want to force assembler files to be interpreted as Thumb code, either add a ‘.thumb’ directive to the source or pass the ‘-mthumb’ option directly to the assembler by prefixing it with ‘-Wa’.</p> <p>As I compile my code with this option, I think that thumb2 instructions are present and that all is done automatically. </p> <p>Theoretically, thumb2 instructions make the code smaller right? If I try to compile some code with yagarto and the toolchain used by maple, I will see some differences. What do you think? </p> http://forums.leaflabs.com/topic.php?id=1438&page=2#post-10903 Sun, 27 May 2012 07:51:54 +0000 gbulmer 10903@http://forums.leaflabs.com/ <p>blackswords - the convention used by some toolchains implementations is to put Thumb2 and Thumb libraries into different directories (called, ingeniously, 'thumb2' or 'thumb'). For example, LeafLabs Maple toolchain is set up this way.</p> <p>I thought that an old version of Yagarto had done that, so I made an assumption.<br /> Also, I thought I'd tried to build a program, but it had failed to run, and that was why I thought there was no thumb2 libraries.<br /> Maybe I made a different type of mistake ?-(</p> <p>But as it works for you, I need to go back and check it all again. That could save me some hassle in the future. </p> http://forums.leaflabs.com/topic.php?id=1438&page=2#post-10901 Sun, 27 May 2012 04:36:04 +0000 blackswords 10901@http://forums.leaflabs.com/ <p>Yes I'm using the latest Mac distribution but I can't tell what's provided (thumb, thumb2 or both). Is there any mean to check that? </p> http://forums.leaflabs.com/topic.php?id=1438&page=2#post-10897 Sat, 26 May 2012 19:46:43 +0000 gbulmer 10897@http://forums.leaflabs.com/ <p>blackswords - are you using the Mac distribution, and the latest release?<br /> It may be that the only libraries supplied are Thumb2, and there are no Thumb libraries (but I'd have expected the developer to tell me that). </p> http://forums.leaflabs.com/topic.php?id=1438&page=2#post-10800 Tue, 22 May 2012 02:18:19 +0000 blackswords 10800@http://forums.leaflabs.com/ <p>what are the drawbacks to not using the thumb2 libraries? I'm using Yagarto for months (maybe a year now) and I don't have any problems </p> http://forums.leaflabs.com/topic.php?id=1438&page=2#post-10799 Mon, 21 May 2012 19:41:07 +0000 gbulmer 10799@http://forums.leaflabs.com/ <p>feurig - I tried using Yagarto but their were <strong>NO</strong> Thumb2 libraries, only Thumb versions, in the Mac version. I wrote to the author (in March), but I AFAICT the package hasn't been updated. I hope to get time to try again soon. </p> http://forums.leaflabs.com/topic.php?id=1438&page=2#post-10794 Mon, 21 May 2012 15:25:32 +0000 blackswords 10794@http://forums.leaflabs.com/ <p>ok! leave me some feedback.<br /> It would be great if someone (I will try too) can add to the article how to add the Maple Library and so use it within Eclipse </p> http://forums.leaflabs.com/topic.php?id=1438&page=2#post-10793 Mon, 21 May 2012 14:16:36 +0000 pici 10793@http://forums.leaflabs.com/ <p>Great ! Thanks a lot - will check it in the next few days. </p> http://forums.leaflabs.com/topic.php?id=1438&page=2#post-10792 Mon, 21 May 2012 12:52:35 +0000 blackswords 10792@http://forums.leaflabs.com/ <p>Anyone tried my tutorial? </p> http://forums.leaflabs.com/topic.php?id=1438&page=2#post-10763 Sun, 20 May 2012 02:42:00 +0000 blackswords 10763@http://forums.leaflabs.com/ <p>Here it is! I wrote this <a href="http://wiki.leaflabs.com/index.php?title=Yagarto_toolchain_under_Eclipse">page</a> to explain how to set up Eclipse for using the YAGARTO Toolchain. I'm not English so I'll be grateful if someone can correct the article into a more proper English. I hope it'll help someone. Give me some feedback </p> http://forums.leaflabs.com/topic.php?id=1438&page=2#post-10724 Thu, 17 May 2012 13:39:13 +0000 blackswords 10724@http://forums.leaflabs.com/ <p>Ok, I'll try do to that if it can helps. I have to remember all the things I've done for getting this working </p>