RTEMS on Beaglebone Black

Sun Feb 22 00:53:10 UTC 2015

Thanks - I'll look through that


On 21/02/2015 4:26 AM, Steve B wrote:
> I think Xenomai (alongside Linux) works quite well on Beaglebone Black 
> in my experience, so you might consider that. There's a pretty easy to 
> follow guide on getting that up and running, also.
>
> I was considering RTEMS for a particular project but device drivers 
> were not available and I wasn't sure about developing those from the 
> ground up. I ended up having to port drivers for Xenomai eventually 
> but I think the actual work of driver porting took less time than it 
> would have with RTEMS.
> For an example of how to get an interrupt off of a GPIO, this white 
> paper may be useful, it looks like they did something close to what 
> you want to do: https://www.osadl.org/fileadmin/dam/rtlws/12/Brown.pdf
>
>
> On Mon, Feb 16, 2015 at 12:59 PM, angelo fraietta 
> <newsgroups at smartcontroller.com.au 
> <mailto:newsgroups at smartcontroller.com.au>> wrote:
>
>
>     On 16/02/2015 5:34 PM, Mathew Benson wrote:
>
>         You're doing that in the CPU?  If all your doing is toggling a
>         GPIO at a steady rate, why don't you just use the PRU and a
>         PWM pin?  Or do you have RTEMS running in the PRU?
>
>
>     That is all I did in the test to see what sort of performance I
>     could get just toggling a pin.  What I actually need to do is
>     interrupt every 640ns, and during that time, read 14 pins and
>     store values in memory. Then, after 16 of these, toggle a pint. 
>     After 10ms of this, I need to raise an event to read the 10ms
>     worth of data, encode it, and send it via UDP.
>
>
>
>         Sent from my iPad
>
>             On Feb 16, 2015, at 12:15 AM, angelo fraietta
>             <newsgroups at smartcontroller.com.au
>             <mailto:newsgroups at smartcontroller.com.au>> wrote:
>
>             Greetings
>
>             Have you got interrupts working on the GPIOs. Also, do you
>             have any sample of reading and writing to GPIO. I need to
>             see whether it is going to be fast enough,
>
>             I ran a program (on linux) on beagle that used registers
>             basically toggling an output. EG
>             http://vabi-robotics.blogspot.com.au/2013/10/register-access-to-gpios-of-beaglebone.html
>
>             It toggled at rate of just under 1Mhz, and what was just
>             doing a while 1 loop. I did not look even look at
>             interrupts there and did nothing else - I didn't even do
>             any reads of GPIO.
>
>             I want to get interrupts happening at 1.56Mhz (preferable)
>             and read 14 GPOI, sbut I could go to half the rate by
>             reducing my sample rate.  The beagle runs at 1Ghz, so I
>             think it should be able to handle it.
>
>
>             Thanks
>
>
>
>                 On 23/01/2015 4:19 PM, Ben Gras wrote:
>                 All,
>
>                 A while ago I finished the basics needed to use the
>                 beaglebones and
>                 beagleboards with RTEMS. The hardware support isn't
>                 very complete yet.
>                 The code is merged with RTEMS mainline though. My fork
>                 of rtems-tools
>                 and RSB is needed for help with building.
>
>                 Full details on how to build it are here:
>                 http://www.shrike-systems.com/beagleboard-xm-beaglebone-black-and-everything-else-rtems-on-the-beagles.html
>
>                 I hope you like it :-). Let me know if you'd like any
>                 followup.
>
>                 Cheers,
>                 Ben
>
>
>
>
>                 On Thu, Jan 22, 2015 at 4:46 AM, angelo fraietta
>                 <newsgroups at smartcontroller.com.au
>                 <mailto:newsgroups at smartcontroller.com.au>> wrote:
>
>                     Greetings
>                     Does anyone know the status of the beaglebone port?
>
>                     Thanks
>
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