http://forums.leaflabs.com/topic.php?id=1115 A place to share, learn, and grow... en-US Fri, 22 Jan 2016 00:20:06 +0000 http://bbpress.org/?v=1.0.2 q http://forums.leaflabs.com/search.php http://forums.leaflabs.com/topic.php?id=1115&page=2#post-7018 Thu, 27 Oct 2011 10:39:18 +0000 Zerkof 7018@http://forums.leaflabs.com/ <p>Hello, I just bought the Olimexino STM-32, and I'm trying to write and read on a micro sd and I could not do that, I wonder if anyone has any example of how this can be done? </p> http://forums.leaflabs.com/topic.php?id=1115#post-7013 Thu, 27 Oct 2011 02:01:41 +0000 gbulmer 7013@http://forums.leaflabs.com/ <p>ianmga - Just to be clear, does the code use the 4-bit wide data interface on the micro-SD card, or does it use the SPI mode?<br /> <a href="http://www.interfacebus.com/MicroSD_Card_Pinout.html" rel="nofollow">http://www.interfacebus.com/MicroSD_Card_Pinout.html</a></p> <p>If it does use the 4-bit data mode, can you give a link to the code? Is the code Open Source? </p> http://forums.leaflabs.com/topic.php?id=1115#post-7011 Wed, 26 Oct 2011 19:15:30 +0000 ianmga 7011@http://forums.leaflabs.com/ <p>I have it working under a different RTOS (I didn't write the code, mind you) and the STM32 reference manual should have enough info... </p> http://forums.leaflabs.com/topic.php?id=1115#post-6985 Tue, 25 Oct 2011 16:24:25 +0000 gbulmer 6985@http://forums.leaflabs.com/ <p>Folks - please don't take my comment as validated and accurate,<br /> I have failed to find things in one of the free SD standards documents, and it said I needed the 'non-free version'. Then I couldn't find similar stuff in the SDIO document, but I haven't bottomed out whether that is also only available in the 'non-free' version.<br /> BUT, they do seem to differentiate between the free-public versions and the membership versions of standard documents.</p> <p>One of the areas I have had real problems finding is switching an SD card from the SPI mode into 4 data-bits, faster modes. So if someone does find instructions, I will be a very happy chappie :-) </p> http://forums.leaflabs.com/topic.php?id=1115#post-6981 Tue, 25 Oct 2011 15:07:31 +0000 robertcook 6981@http://forums.leaflabs.com/ <p>Ah, the medieval guild system is alive and well. </p> http://forums.leaflabs.com/topic.php?id=1115#post-6970 Tue, 25 Oct 2011 10:04:43 +0000 mbolivar 6970@http://forums.leaflabs.com/ <blockquote><p> I do not know for sure, but it might be that you need to buy a membership to the SD organisation to get all the documents you need. </p></blockquote> <p>Ugh. Ain't life grand. </p> http://forums.leaflabs.com/topic.php?id=1115#post-6963 Mon, 24 Oct 2011 18:48:04 +0000 gbulmer 6963@http://forums.leaflabs.com/ <p>Be a little cautious about SDIO - I've been reading some of the SD documents, and some details are removed from the free documents. I do not know for sure, but it might be that you need to buy a membership to the SD organisation to get all the documents you need. </p> http://forums.leaflabs.com/topic.php?id=1115#post-6960 Mon, 24 Oct 2011 17:29:20 +0000 robertcook 6960@http://forums.leaflabs.com/ <p>Thanks. I'll dive into the manual. </p> http://forums.leaflabs.com/topic.php?id=1115#post-6959 Mon, 24 Oct 2011 16:47:09 +0000 robodude666 6959@http://forums.leaflabs.com/ <p>robertcook,</p> <p>The uSD card slot is connected to the hardware SDIO peripheral, which should yield higher performance than SPI. However, libmaple does not currently support the SDIO functionality of the STM32.</p> <p>If you wish to use SDIO, check out RM0008 for more information. I'm sure official support will be included in the future, but currently the leafinites are busy with other things it seems.</p> <p>-robodude666 </p> http://forums.leaflabs.com/topic.php?id=1115#post-6958 Mon, 24 Oct 2011 16:36:12 +0000 robertcook 6958@http://forums.leaflabs.com/ <p>OK, so looking at the schematics, it appears that "SD/SD1" does not use any of the SPI ports, but, rather, 4 dedicated GPIOs for data. Is this design expected to perform better than the SPI+DMA approach described elsewhere in the forum? </p> http://forums.leaflabs.com/topic.php?id=1115#post-6952 Sun, 23 Oct 2011 00:18:15 +0000 robertcook 6952@http://forums.leaflabs.com/ <p>Hi - I'm been using the SDFat library on a standard Maple I'm switching to the Maple Native as I need 3 SPI channels.</p> <p>I assume that this built-in SD card is connected to one of the three SPI channels? And is there a reason that SDFat shouldn't work with it? </p> http://forums.leaflabs.com/topic.php?id=1115#post-6887 Mon, 17 Oct 2011 11:39:36 +0000 poslathian 6887@http://forums.leaflabs.com/ <p>thats the plan. </p> http://forums.leaflabs.com/topic.php?id=1115#post-6852 Wed, 12 Oct 2011 16:18:30 +0000 mbk 6852@http://forums.leaflabs.com/ <p>Hi mbolivar,</p> <p>Thanks for your answer.<br /> Right now getting SD card to work is out of my scope, was just curious. So this means that at some point it will work with libmaple?</p> <p>sincerely<br /> MBK </p> http://forums.leaflabs.com/topic.php?id=1115#post-6844 Wed, 12 Oct 2011 15:29:22 +0000 mbolivar 6844@http://forums.leaflabs.com/ <p>Hi MBK,</p> <p>It is a micro-SD slot. However, libmaple doesn't support the SDIO peripheral yet, which is why we aren't publicizing that feature too much. For now, you can try using ST's firmware library. Let us know how it goes, and we're glad you liked the candy! </p> http://forums.leaflabs.com/topic.php?id=1115#post-6842 Wed, 12 Oct 2011 15:04:16 +0000 mbk 6842@http://forums.leaflabs.com/ <p>BTW, thanks for the candy :) </p>