Thanks. -Tom On Feb 8, 2013, at 7:13 PM, Michael Haberler <[email protected]> wrote:
> > Am 09.02.2013 um 00:36 schrieb Matt Shaver: > >> On Thu, 7 Feb 2013 22:48:49 -0500 >> Tom Easterday <[email protected]> wrote: >> >>> Michael, >>> I recall seeing a message from you a while back saying you had given >>> up on raspberry pi (I'm paraphrasing) but I can't seem to locate that >>> in my mail at the moment. I was curious why it was you abandoned it? >>> Was it an I/O issue or performance with real time? Did you >>> ultimately get the Xenomai build working on it? Thanks, -Tom >> >> I think I've found the relevant quotes from way back on the list: >> >> On Mon, 03 Dec 2012 05:44:44 -0600 >> Charles Steinkuehler <[email protected]> wrote: >>> On 12/2/2012 10:22 PM, Michael Haberler wrote: >>>> As for the Raspberry: that has very limited potential - the >>>> platform is about half as fast as the Beaglebone, has fairly >>>> minimal GPIO, and it is wed to the Broadcom chipset, which I would >>>> rate as a company which still doesnt get it. A mean voice said >>>> about the chipset used on the Pi 'half of it isnt documented, and >>>> the other half doesnt work'. Thats not entirely true but there is >>>> something to that comment. >>> >>> Even worse, the Pi isn't an ARM chip with a bunch of stuff attached, >>> it's a black-box video decoder/GPU that happens to have an ARM as a >>> co-processor. The GPU is in total control of the system (including >>> booting from flash), everything about the GPU is undocumented, and the >>> GPU can eat up as much bus/memory/system as it wants, holding off even >>> a real-time Linux kernel for unknowable amounts of time. >>> >>> I agree with you that Broadcom doesn't get it, and TI does. > > sorry Tom, I missed that one. > > No new revelations I could add. > > thanks, Matt! > > - Michael > >> >> Thanks, >> Matt ------------------------------------------------------------------------------ Free Next-Gen Firewall Hardware Offer Buy your Sophos next-gen firewall before the end March 2013 and get the hardware for free! Learn more. http://p.sf.net/sfu/sophos-d2d-feb _______________________________________________ Emc-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-developers
