http://forums.leaflabs.com/topic.php?id=905 A place to share, learn, and grow... en-US Fri, 22 Jan 2016 00:18:54 +0000 http://bbpress.org/?v=1.0.2 q http://forums.leaflabs.com/search.php http://forums.leaflabs.com/topic.php?id=905#post-6796 Sun, 09 Oct 2011 13:59:53 +0000 kaipyroami 6796@http://forums.leaflabs.com/ <p>@poslathian<br /> I hope so! </p> http://forums.leaflabs.com/topic.php?id=905#post-5590 Thu, 07 Jul 2011 20:19:00 +0000 poslathian 5590@http://forums.leaflabs.com/ <p>Looks like a job for Maple Native, which has the requisite outboard memories </p> http://forums.leaflabs.com/topic.php?id=905#post-5589 Thu, 07 Jul 2011 19:18:49 +0000 gbulmer 5589@http://forums.leaflabs.com/ <p>The STM32F development board they use to run uCLinux has quite a lot of memory external to the STM32F103. </p> <p>The document lists:<br /> 64 or 128 Mbit serial Flash memory (8MB or 16MB),<br /> 512 Kbit × 16 SRAM (1MB),<br /> 512 Mbit or 1 Gbit NAND Flash (64MB or 128MB) and<br /> 128 Mbit NOR Flash memory (16MB)</p> <p>as well as the MCU's "64 Kbyte of internal SRAM and 512 Kbyte of Flash memory,"<br /> It looked like it used the external memory, but it wasn't very clear to me. </p> http://forums.leaflabs.com/topic.php?id=905#post-5578 Thu, 07 Jul 2011 10:29:26 +0000 robodude666 5578@http://forums.leaflabs.com/ <p>There happens to be an <a href="http://www.st.com/internet/com/TECHNICAL_RESOURCES/TECHNICAL_LITERATURE/APPLICATION_NOTE/CD00242717.pdf">Application Note</a> from STM about using uCLinux on high-density STM32F103 parts. They use the STM32-EVAL board, which is based on the same MCU as the Maple Native, but the STM32F103RET6 used in the Maple RET6 edition is also considered a high-density part. Aught to work. </p> http://forums.leaflabs.com/topic.php?id=905#post-5577 Thu, 07 Jul 2011 09:09:52 +0000 poslathian 5577@http://forums.leaflabs.com/ <p>linux requires the MMU (memory management unit) - which is not included on the Cortex M3 core. However, there is an MMU-free linux called uCLinux - which very well may run on the Maple RET6, check it out! </p> http://forums.leaflabs.com/topic.php?id=905#post-5571 Wed, 06 Jul 2011 18:13:54 +0000 gbulmer 5571@http://forums.leaflabs.com/ <p>I got one of these AVR32 boards a couple of years ago:<br /> <a href="http://www.atmel.com/dyn/products/tools_card.asp?tool_id=4102" rel="nofollow">http://www.atmel.com/dyn/products/tools_card.asp?tool_id=4102</a><br /> and it runs Linux fine. 32MByte Flash 32MByte RAM</p> <p>That processor is comparable in power to a Cortex-M3, but has a memory management unit.</p> <p>Anyway it is clearly feasible that you could build a Linux image for something with this level of resources. </p> http://forums.leaflabs.com/topic.php?id=905#post-5570 Wed, 06 Jul 2011 17:33:17 +0000 robodude666 5570@http://forums.leaflabs.com/ <p>The STM32F103 is not powerful enough to run linux. At most the Maple RET6 edition has 512kB FLASH and 64kB RAM. That's just not enough.</p> <p>The current version of libmaple in the github repository has FreeRTOS support built in. There is also a <a href="http://wiki.leaflabs.com/index.php?title=Running_ChibiOS_on_the_Maple_r5">guide</a> in the wiki for running ChibiOS on the Maple.</p> <p>If you want to run Linux, you may want to look at something like the Beagleboard or another Cortex-A8/A9 board.</p> <p>-robodude666 </p> http://forums.leaflabs.com/topic.php?id=905#post-5569 Wed, 06 Jul 2011 17:02:59 +0000 simonyuen1999 5569@http://forums.leaflabs.com/ <p>Just wonder: Does anyone try to compile Linux kernel 2.6 plus busybox into a very small image to put it into Maple? It can use serial port to connect to a VT100 as system concole. I am sure STM32F103 is powerful enough to run Linux.</p> <p>Does anyone know this information? Any suggestion where can I find these information?<br /> Thx<br /> Simon </p>