http://forums.leaflabs.com/topic.php?id=1856 A place to share, learn, and grow... en-US Fri, 22 Jan 2016 00:13:56 +0000 http://bbpress.org/?v=1.0.2 q http://forums.leaflabs.com/search.php http://forums.leaflabs.com/topic.php?id=1856&page=2#post-11272 Thu, 14 Jun 2012 13:52:40 +0000 mbolivar 11272@http://forums.leaflabs.com/ <blockquote><p> The STM32F0Discovery board is 2x33 pins. This is great because the pins are single rows, but ...<br /> My favourite breadboards are only 30pin-rows long, and another other popular type are only 28pin-rows, so folks might need to get longer breadboards. </p></blockquote> <p>My F0 discovery board came with a piece of 20x35 protoboard, so thankfully it's reasonably batteries-included on that front. Enough for people to get started on while a breadboard ships. </p> http://forums.leaflabs.com/topic.php?id=1856#post-11269 Thu, 14 Jun 2012 10:32:46 +0000 gbulmer 11269@http://forums.leaflabs.com/ <p>I forgot to mention two differences between STM32F0 and other development boards and ICs in the ST Micro family. </p> <p>The STM32F0Discovery board is 2x33 pins. This is great because the pins are single rows, but ...<br /> My favourite breadboards are only 30pin-rows long, and another other popular type are only 28pin-rows, so folks might need to get longer breadboards.</p> <p>The STM32F051 is *NOT* pin compatible with STM32F1xx or STM32F2/4.<br /> The STM32F051 has more I/O pins than the STM32F1/2/4. The STM32F051 I/O replaces power/ground pins of the STM32F1/2/4. The 48pin STM32F051 has two more I/O pins (hence 2 less power/ground) and the 64pin part has 4 more I/O (hence 4 less power/ground).</p> <p>It might be worth noting, the STM32F050 is even simpler than the STM32F051 on the STM32F0Discovery board. So the STM32F050 should be even lower-cost! (I've seen prices, which are lower, but I haven't found any in stock, so the prices might not be reliable.) On paper, the STM32F050 is more powerful than an Arduino UNO's ATmega328; faster, more RAM, better ADC, more and better timers, DMA. </p> <p>The STM32F051's do look like great parts for low-cost robots. </p> http://forums.leaflabs.com/topic.php?id=1856#post-11174 Fri, 08 Jun 2012 18:29:34 +0000 mbolivar 11174@http://forums.leaflabs.com/ <p>Got one on Digikey. Sounds like a good rainy-day project.</p> <p>Update (11 June 2012): And it's here! </p> http://forums.leaflabs.com/topic.php?id=1856#post-11164 Fri, 08 Jun 2012 08:05:50 +0000 gbulmer 11164@http://forums.leaflabs.com/ <blockquote><p>Sold out here :(. Sigh.</p> </blockquote> <p>Sorry about that. I did buy several, but there were some left when I posted.</p> <p>Farnell in the UK have plenty:<br /> <a href="http://uk.farnell.com/stmicroelectronics/stm32f0discovery/eval-board-cortex-m0-stm32f0/dp/2096251?Ntt=stm32f0discovery" rel="nofollow">http://uk.farnell.com/stmicroelectronics/stm32f0discovery/eval-board-cortex-m0-stm32f0/dp/2096251?Ntt=stm32f0discovery</a><br /> RS have them too:<br /> <a href="http://uk.rs-online.com/web/p/microcontroller-processor/7587554/" rel="nofollow">http://uk.rs-online.com/web/p/microcontroller-processor/7587554/</a><br /> so I imagine there will be more turning up at Future.</p> <p>For USA residents, Digikey appear to have some:<br /> <a href="http://www.digikey.com/product-search/en?x=0&amp;y=0&amp;lang=en&amp;site=us&amp;KeyWords=32f0discovery" rel="nofollow">http://www.digikey.com/product-search/en?x=0&amp;y=0&amp;lang=en&amp;site=us&amp;KeyWords=32f0discovery</a><br /> and Mouser have some on order<br /> <a href="http://www2.mouser.com/ProductDetail/STMicroelectronics/STM32F0DISCOVERY/?qs=y%252bFWVGuMvwZK8miFvhZefg%3d%3d" rel="nofollow">http://www2.mouser.com/ProductDetail/STMicroelectronics/STM32F0DISCOVERY/?qs=y%252bFWVGuMvwZK8miFvhZefg%3d%3d</a></p> <p>It is good value for a USB uploader, but amazing value for a hardware serial wire debugger too! </p> http://forums.leaflabs.com/topic.php?id=1856#post-11158 Fri, 08 Jun 2012 03:15:09 +0000 mbolivar 11158@http://forums.leaflabs.com/ <p>Back on topic:</p> <blockquote><p> The STM32F0Discovery at Future Electronics is listed at $7.99 . So that is probably the lowest-cost SWD ST-LINK/V2 at the moment :-) </p></blockquote> <p>Sold out here :(. Sigh. </p> http://forums.leaflabs.com/topic.php?id=1856#post-11157 Fri, 08 Jun 2012 02:32:27 +0000 mbolivar 11157@http://forums.leaflabs.com/ <p>either one is fine: <a href="http://leaflabs.com/docs/libmaple/contributing.html" rel="nofollow">http://leaflabs.com/docs/libmaple/contributing.html</a> </p> http://forums.leaflabs.com/topic.php?id=1856#post-11156 Fri, 08 Jun 2012 02:23:26 +0000 crenn 11156@http://forums.leaflabs.com/ <p>What do you mean by patch? A pull request on github or an email? I'll send an email later tonight either way. </p> http://forums.leaflabs.com/topic.php?id=1856#post-11152 Fri, 08 Jun 2012 00:06:14 +0000 mbolivar 11152@http://forums.leaflabs.com/ <p>Yes, definitely. Send us a patch? </p> http://forums.leaflabs.com/topic.php?id=1856#post-11141 Thu, 07 Jun 2012 19:14:56 +0000 crenn 11141@http://forums.leaflabs.com/ <p>Lastly, is leaflabs interested in using the new WireBase library instead of the old Wire library that's currently available in the MapleIDE? I know there is still improvements to be made, but thought you guys might be interested as Hardware I2C support is now a lot simpler than the previous Wire library I wrote. </p> http://forums.leaflabs.com/topic.php?id=1856#post-11140 Thu, 07 Jun 2012 18:35:28 +0000 mbolivar 11140@http://forums.leaflabs.com/ <p>Good question. There's too much work to do to integrate libmaple within Wiring for the next release (the APIs are still incompatible, and while some progress has been made on that front, there's a lot that still needs to be sorted out with the Wiring team), so we'll do another standalone release to get the code out there before moving on.</p> <p>Edit: Also note that we will definitely keep developing libmaple separately, in its own tree. We don't foresee a single AVR/STM32 Git repository anytime in the foreseeable future, as that doesn't leave us with enough flexibility to make our own decisions quickly. </p> http://forums.leaflabs.com/topic.php?id=1856#post-11134 Thu, 07 Jun 2012 08:27:42 +0000 crenn 11134@http://forums.leaflabs.com/ <p>Is libmaple going to be an 'extension library' for Wiring IDE? Or will libmaple v0.0.13 going to be a standalone IDE as per the other releases? </p> http://forums.leaflabs.com/topic.php?id=1856#post-11125 Thu, 07 Jun 2012 05:11:35 +0000 mbolivar 11125@http://forums.leaflabs.com/ <p>crenn:</p> <blockquote><p> mbolivar, the reference manual is available from here:<br /> <a href="http://www.st.com/internet/mcu/subclass/1588.jsp" rel="nofollow">http://www.st.com/internet/mcu/subclass/1588.jsp</a></p> </blockquote> <p>Thanks!</p> <p>gbulmer:</p> <blockquote><p> mbolivar - I haven't done a detailed comparison between F0 and F2/F4, but STM32F051 has an Advanced Timer which looks very similar to TIM1, quadrature decoders in some of its other timers.</p> <p>GPIO is very similar, though STM32F4 has an 'output speed' option which isn't implemented on the 'F051, and the 'F051 has a Port Bit Reset register (last register, and the rest looks like the same address offsets)</p> </blockquote> <p>Interesting! I also took a quick look at the reference manual (mostly just the table of contents and a few glances at some register maps), and it looks like F0 is a mash-up of F1 value line (note the presence of TIM15-TIM17) and F2/F4 (SYSCFG instead of AFIO, e.g.).</p> <p>The other peripherals you mention are intriguing as well.</p> <p>Thanks to Anton Eltchaninov, we've got <a href="https://github.com/leaflabs/libmaple/commit/2fb91678e08fc25299d70b1500495bbe06ee61be/">value line support in the libmaple development branch</a>, which will be merged as part of the next release. This helps keep us honest on F1 -- no more inappropriate "performance-line-isms", or the library doesn't build ;) -- and, combined with F2 support, will also hopefully make adding F0 easier than it otherwise would be. Sounds like an interesting project for an enterprising hacker once libmaple v0.0.13 is out! </p> http://forums.leaflabs.com/topic.php?id=1856#post-11111 Wed, 06 Jun 2012 18:51:44 +0000 gbulmer 11111@http://forums.leaflabs.com/ <p>mbolivar - I haven't done a detailed comparison between F0 and F2/F4, but STM32F051 has an Advanced Timer which looks very similar to TIM1, quadrature decoders in some of its other timers. </p> <p>GPIO is very similar, though STM32F4 has an 'output speed' option which isn't implemented on the 'F051, and the 'F051 has a Port Bit Reset register (last register, and the rest looks like the same address offsets)</p> <p>One thing that interested me is the pair of comparators on the F051, could be very handy. The Infrared Transmitter modulation could make it extremely easy to make an IR remote control, and the capacitive touch peripheral might remove the need for mechanical switches. </p> http://forums.leaflabs.com/topic.php?id=1856#post-11106 Wed, 06 Jun 2012 09:13:48 +0000 crenn 11106@http://forums.leaflabs.com/ <p>mbolivar, the reference manual is available from here:<br /> <a href="http://www.st.com/internet/mcu/subclass/1588.jsp" rel="nofollow">http://www.st.com/internet/mcu/subclass/1588.jsp</a></p> <p>I'd look myself however I've got an exam in 9 hours. After that, I'll probably take a look myself, but I'd suspect it's going to be very similar or near identical to how the F2/F4 series are to allow users to switch between chips (mainly going up the line than down it). </p> http://forums.leaflabs.com/topic.php?id=1856#post-11099 Wed, 06 Jun 2012 03:28:06 +0000 mbolivar 11099@http://forums.leaflabs.com/ <p>I'm totally unfamiliar with Cortex M0. Do you know if the F0 peripheral registers are anything like what we've got on F1/F2/F4? (I took a look at the st.com link you posted, but there doesn't seem to be a reference manual or datasheet up yet). </p>