http://forums.leaflabs.com/topic.php?id=972 A place to share, learn, and grow... en-US Fri, 22 Jan 2016 00:20:09 +0000 http://bbpress.org/?v=1.0.2 q http://forums.leaflabs.com/search.php http://forums.leaflabs.com/topic.php?id=972#post-6029 Mon, 22 Aug 2011 09:01:32 +0000 gbulmer 6029@http://forums.leaflabs.com/ <p>galindro - if you are interested in encryption, but not tied to polarssl, you might also consider is an STM32W which has an AES accelerator. It has built in 802.15.4 wireless too.</p> <p>You can get a development kit with a two development boards using them for under £25 (+VAT) from Farnell<br /> <a href="http://www.st.com/internet/evalboard/product/251361.jsp" rel="nofollow">http://www.st.com/internet/evalboard/product/251361.jsp</a><br /> <a href="http://uk.farnell.com/stmicroelectronics/stm32w-rfckit/kit-rf-control-stm32w/dp/1879378" rel="nofollow">http://uk.farnell.com/stmicroelectronics/stm32w-rfckit/kit-rf-control-stm32w/dp/1879378</a> </p> http://forums.leaflabs.com/topic.php?id=972#post-5995 Tue, 16 Aug 2011 06:37:59 +0000 zoofdxp 5995@http://forums.leaflabs.com/ <p>Consider using an STM32F215x or 'F217x having hardware crypto accelerator and 132K RAM, 512K to 1MB of Flash and 120MHz processing, it will get the job more than done. </p> http://forums.leaflabs.com/topic.php?id=972#post-5985 Mon, 15 Aug 2011 06:57:03 +0000 galindro 5985@http://forums.leaflabs.com/ <p>I want use maple with PolarSSL -&gt; <a href="http://polarssl.org/" rel="nofollow">http://polarssl.org/</a><br /> I'll need more SRAM to exec cryptograph operations. Did you know if Amani 64 CPLD Shield itself can exec cryptograph operations for arduino?</p> <p>Please, see this: <a href="http://polarssl.org/forum_view_topic?topic_id=182" rel="nofollow">http://polarssl.org/forum_view_topic?topic_id=182</a> </p> http://forums.leaflabs.com/topic.php?id=972#post-5978 Fri, 12 Aug 2011 17:55:27 +0000 zoofdxp 5978@http://forums.leaflabs.com/ <p>That is a pretty open question...how it will be used and how much of it you need makes a difference...</p> <p>If you need 32K x 8 for example...you could wire in a Microchip 23K256 SPI SRAM and<br /> write some code to access it.</p> <p>If you need, let us say 256K x 8 then the following solution may work for you:<br /> <a href="http://majolsurf.net/wordpress/?p=930" rel="nofollow">http://majolsurf.net/wordpress/?p=930</a></p> <p>It is an Amani 64 CPLD shield for the arduino form factor, handles 3.3V, and they have provided code that banks up to 8 32K x 8 chips. The CPLD is used so that no delay penalties are incurred during data trasfer, as may happen when using a simpler scheme to bank the ICs using GPIOs as chip selects..essentially all of the SRAM chips come together to form a contiguous memory space. Arduino source code is provided banking 4 23K256 sram chips. </p> http://forums.leaflabs.com/topic.php?id=972#post-5974 Fri, 12 Aug 2011 09:56:57 +0000 galindro 5974@http://forums.leaflabs.com/ <p>Hi! Is it possible to increase Maple's SRAM? If yes, how can I do that? </p>