http://forums.leaflabs.com/forum.php?id=9 A place to share, learn, and grow... en-US Fri, 22 Jan 2016 00:01:16 +0000 http://bbpress.org/?v=1.0.2 q http://forums.leaflabs.com/search.php http://forums.leaflabs.com/topic.php?id=74453#post-105785 Wed, 21 Oct 2015 11:25:45 +0000 gbulmer 105785@http://forums.leaflabs.com/ <p>There was a press release about them:<br /> <a href="http://www.st.com/web/en/news/n3742" rel="nofollow">http://www.st.com/web/en/news/n3742</a></p> <p>These smaller Nucleos are called Nucleo-32</p> <p>The boards use a 32pin MCU target. There are three signals, connecting the MCU to the ST-LINK/V2-1 MCU (SDIO, SWCLK and VCP RX), which aren't on the DIL pins. Those would have been useful on header pins. VCP RX would be good because it completes the USART (VCP Tx is available on the 2x15 pin DIL header).</p> <p>Their are a bunch of useful documents, for example for the STM32F303 Nucleo-32 board:<br /> <a href="http://www.st.com/web/catalog/tools/FM116/SC959/SS1532/LN1847/PF262544" rel="nofollow">http://www.st.com/web/catalog/tools/FM116/SC959/SS1532/LN1847/PF262544</a><br /> The most useful seems to be "[url=http://www.st.com/st-web-ui/static/active/en/resource/technical/document/user_manual/DM00231744.pdf]UM1956 User manual. STM32 Nucleo-32 boards[/url]", which contains the schematics, and key to the board layout. </p> <p>Like 'big Nucleo's" it has an ST-LINK/V2-1, which uses an STM32F103CBT6. This connects to the MCU's SWD pins, [i]and[/i] has a USART connection too. However, there isn't a SWD socket.</p> <p>The schematic has the comment "closed for L021, L031,L433 open for F042,F031,F303" next to the crystal.<br /> So it appears that there will be 6 MCU's on that PCB. </p> <p>Their are pads for an external 32KiHz crystal (X1). The STM32F boards won't have that.<br /> STM32Fxxx can be be driven by the HSI, or the ST-LINK/V2-1 'MCO' signal</p> <p>When the crystal is [i]not[/i] connected, Arduino Nano-pins D7 and D8 are connected to the unused crystal oscillator pins, which can be used as normal GPIOs. So the STM32Fs have two more useful I/O pins than the STM32Ls.</p> <p>I like the mbed-style upload on Nucleo's; they look like a small flash drive. Upload a binary-program using a file browser, command-line copy command, or any program (e.g. web browser) which can write a file, and upload is done. "Simples". This is so much simpler than using avrdude, ST-LINK-drivers, or texanes ST-LINK software. The STLINK/V2-1 implements a USB virtual comm port, so it might be as easy to talk to it from a host PC as an Arduino.</p> <p>The STM32F3 is a very impressive part. It uses the same CPU as a Cortex-M4 (with hardware floating point) and much improved peripherals compared to the STM32F103. For example, the STM32F303 has 5Msps ADCs, compared to 1Msps for STM32F103, DACs, two analogue comparators, and a programmable gain Op Amp. </p> http://forums.leaflabs.com/topic.php?id=74453#post-105784 Mon, 19 Oct 2015 19:22:44 +0000 gbulmer 105784@http://forums.leaflabs.com/ <p>There are some interesting new ST-developed STM32 Nucleos, in a smaller, 'Arduino Nano' form-factor:<br /> <a href="http://www.st.com/web/catalog/tools/FM116/CL1620/SC959/SS1532/LN1847/PF262544?s_searchtype=partnumber" rel="nofollow">http://www.st.com/web/catalog/tools/FM116/CL1620/SC959/SS1532/LN1847/PF262544?s_searchtype=partnumber</a></p> <p>There are three so far, including an STM32F303</p> <p>They are available for £7.40 from UK Farnell:<br /> <a href="http://uk.farnell.com/stmicroelectronics/nucleo-f303k8/dev-board-stm32f303k8-nucleo-32/dp/2500224" rel="nofollow">http://uk.farnell.com/stmicroelectronics/nucleo-f303k8/dev-board-stm32f303k8-nucleo-32/dp/2500224</a></p> <p>Also Mouser and Digikey are listing it.</p> <p>AFAICT it is an mbed, and so should support the 'flash drive upload' feature. </p> http://forums.leaflabs.com/topic.php?id=74431#post-105726 Tue, 28 Apr 2015 20:22:31 +0000 gbulmer 105726@http://forums.leaflabs.com/ <p>@bobc "Well, this forum is pretty much dead, especially after Leaf declared Maple EOL."</p> <p>I disagree. LeafLabs are keeping this forum open</p> <p>My point is:</p> <p>The Maple libraries are being re-worked by at least one of the original developers at:<br /> <a href="http://rambutan.cc/" rel="nofollow">http://rambutan.cc/</a><br /> I am sure they would welcome your contribution to improve the code base.</p> <p>Siy and I have designed new Maple-compatible boards, with significant improvements, available as Open Source designs at github<br /> ventosus and a few others have done STM32F3 ports of libmaple<br /> ala42 has done some STM32F4</p> <p>Maple-compatible boards can be bought at pretty reasonable cost, ready made on eBay</p> <p>The st.com forums have useful advice on STM32</p> <p>Mbed.org has STM32F nucleo board support and projects.</p> <p>electronics.stackexchange.com has a steady trickle of questions about STM32</p> <p>So, I repeat, fragmenting the community even more seems pointless.<br /> On the face of it, there is no clear reason not to just continue to use one of the existing forums.</p> <p>Creating yet another forum is like "working to standardise" something by creating yet another standard, resulting in N+1 standards.</p> <p>(Full disclosure: I am not, and have never been a member of LeafLabs staff, nor have I ever had any financial interests in LeafLabs) </p> http://forums.leaflabs.com/topic.php?id=74431#post-105725 Tue, 28 Apr 2015 04:08:11 +0000 bobc 105725@http://forums.leaflabs.com/ <p>Well, this forum is pretty much dead, especially after Leaf declared Maple EOL. The Arduino forum is really for official Arduino products and not the place for third party supported devices.</p> <p>Clearly, there is popular interest in STM32 boards, not so much Maple. There are quite a lot of things about the Maple code that can be improved, it was kinda half done, and there was little sign of improvements coming from Maple, none now.</p> <p>So that leaves one active forum, and congrats to Roger for setting it up. I think far from fragmenting things, he is moving things forward with a forum that has active interest. </p> http://forums.leaflabs.com/topic.php?id=74431#post-105724 Mon, 27 Apr 2015 19:30:51 +0000 gbulmer 105724@http://forums.leaflabs.com/ <p>@rogerclark - why not use arduino.cc or here?</p> <p>It seems pointless fragmenting communities into three forums. </p> http://forums.leaflabs.com/topic.php?id=74431#post-105723 Mon, 27 Apr 2015 17:28:02 +0000 rogerclark 105723@http://forums.leaflabs.com/ <p>Guys,</p> <p>By popular demand I have created a new forum for anyone interested in STM32 on Arduino, especially the Maple and Maple mini, but also for generic STM32F103 boards</p> <p>Its early days, but the new forum is at</p> <p><a href="http://www.stm32duino.com/" rel="nofollow">http://www.stm32duino.com/</a></p> <p>So please take a look, or post if you have a question</p> <p>Cheers</p> <p>Roger Clark </p> http://forums.leaflabs.com/topic.php?id=74422#post-105700 Thu, 02 Apr 2015 21:25:03 +0000 victor_pv 105700@http://forums.leaflabs.com/ <p>Bigplik,<br /> There have been a successful effort to port the libmaple libraries over to Arduino 1.6 IDE, and includes several working libraries that many people have been contributing.</p> <p>Just recently one of the members posted a library for an OLED, check the latest pages in the thread.</p> <p>I worked to add DMA support to the ILI9341 library such as the one in the Arduino Due and Teensy and got really good speeds. Other members of the community have added libraries for other displays, the main maintainer has added other libraries, and with everyone helping is looking pretty good.<br /> With a bit of effort most standard arduino code can be ported successfully much easier than to the Maple IDE.</p> <p>You can get the link to the repo here:<br /> <a href="http://forum.arduino.cc/index.php?topic=265904.0" rel="nofollow">http://forum.arduino.cc/index.php?topic=265904.0</a> </p> http://forums.leaflabs.com/topic.php?id=74422#post-105692 Wed, 25 Mar 2015 07:53:16 +0000 bigplik 105692@http://forums.leaflabs.com/ <p>hi, is any OLED display working nicely with mapleIDE or let to use arduino libraries like ssd1306 or u8glib? </p> http://forums.leaflabs.com/topic.php?id=74410#post-105626 Thu, 15 Jan 2015 06:33:21 +0000 dbolgheroni 105626@http://forums.leaflabs.com/ <p>Got it. Sorry for the noise. </p> http://forums.leaflabs.com/topic.php?id=74410#post-105624 Wed, 14 Jan 2015 17:30:48 +0000 dbolgheroni 105624@http://forums.leaflabs.com/ <p>Is it possible to edit a post? Can't find an 'edit' link.</p> <p>Thank you. </p> http://forums.leaflabs.com/topic.php?id=74276#post-105590 Thu, 25 Dec 2014 11:16:18 +0000 tmash 105590@http://forums.leaflabs.com/ <p>Do: make library first.<br /> make sure that library and rules.mk are under MAPLE_ROOT/libraries. </p> http://forums.leaflabs.com/topic.php?id=74366#post-105552 Tue, 14 Oct 2014 18:22:14 +0000 bobc 105552@http://forums.leaflabs.com/ <blockquote><p>Nice! I think Leaflabs sells stuff almost exclusively through Sparkfun now, it is hard to ship that to the UK or just too expensive? In your maple-asp git repository, the way you've committed everything all at once makes it hard to see what changes you had to make, and also might make it hard to take advantage of any future patches to libmaple.</p></blockquote> <p>The Sparkfun boards are a little pricey for me after shipping, taxes, duty, I found a local supplier but they price all that in plus add a little margin :( However, I have a number of Maple clones from ebay: Iteadmaple, Olimexino-STM32, Maple-mini which are remarkably cheap and seem to work.</p> <p>I have not made any code changes, but I did have to move files around. I'm not sure if git can track that. Maybe I could start with a clean repo when I have a better idea. Unfortunately I can't see how to reproduce the nifty makefiles in the Arduino 1.5.x port.</p> <p>I think I am nearly ready to declare a working version but I'm struggling with a start up issue. I can build and auto-download but the sketch does not run until power is cycled. </p> http://forums.leaflabs.com/topic.php?id=74366#post-105549 Tue, 14 Oct 2014 06:07:34 +0000 gbulmer 105549@http://forums.leaflabs.com/ <p>@bnewbold - Is that your teaching for the day? </p> <p>Similar to "If a tree falls in a forest and no one is around to hear it, does it make a sound?" ;-) </p> http://forums.leaflabs.com/topic.php?id=74366#post-105547 Mon, 13 Oct 2014 13:28:21 +0000 bnewbold 105547@http://forums.leaflabs.com/ <p>bobricius: it's there, whether you see it or not ;) </p> http://forums.leaflabs.com/topic.php?id=74366#post-105544 Sun, 12 Oct 2014 08:14:43 +0000 bobricius 105544@http://forums.leaflabs.com/ <p>I want newer see lqfp in my life. </p>