<div dir="ltr"><br><div class="gmail_extra"><br><div class="gmail_quote">On Fri, May 22, 2015 at 11:28 AM, Mr. Andrei Chichak <span dir="ltr"><<a href="mailto:groups@chichak.ca" target="_blank">groups@chichak.ca</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span class=""><br>
</span>I haven’t managed to wrap my head around the filesystem/SD card system in RTEMS yet. The projects that I have been working on, until recently, didn’t need logging. One project I did do that used SD cards, I used a chunk of code called FatFS that “worked”. On the STM32F4, people are getting a blazing 4MB/second write speed using a class 10 card and the SD 4-bit interface (beware of the specs, class 10 can actually mean 10MB/sec read, but 0.5MB/sec write - thanks Kingston). That was about half of what our project required.<br>
<br></blockquote><div>Thanks.. if that's the one from <a href="http://elm-chan.org">elm-chan.org</a> then I've heard of it and would have been considering it for sure if I was going to go totally bare metal. Wasn't sure how well it would mix with RTEMS or another RTOS but if it is known to work reasonably well, then "problem solved" as far as I'm concerned. Those write speeds you mention (even worst case) should be good enough for me.<br></div><div> <br></div><div>For CAN bus do you use a driver that goes into the BSP or is all of the code in application-space?<br></div><div>I have an STM32F4 Discovery board on hand and got the BSP built and Hello demo to run, so now I'm interested in making the jump to doing something useful.. same with Zynq actually.<br><br></div><div><br></div><div>Steve<br></div></div></div></div>