rtems on raspberry pi 2 difficultys

[Alan Cudmore]

I have not updated my Raspberry Pi / RTEMS environment in a while, but I
recall similar problems with the latest Raspberry PI firmware. I was able
to use a specific release and make RTEMS work. I'll see if I can find the
details.

Alan


On Mon, Jul 17, 2017 at 9:15 AM, Andreas Kölbl <
andreas.koelbl at st.oth-regensburg.de> wrote:

> Am 17.07.2017 um 13:29 schrieb William Kirstaedter:
> > Hi @all,
> > I hope I am asking in the right mailing list.
> >
> > This probably has already been asked, but I wasnt able to find
> > anything suiting my problem case.
> >
> > I want to run RTEMS (and later on EPICS, but this shall not be part of
> > this request here) on my Raspberry Pi 2 B.
> > So I followed various guides on how to get RTEMS compiled for ARM /
> > raspberry pi, and got a seemingly successful build of RTEMS 4.12
> > including the sample programs.
> > I then made a binary out of the ticker.exe and copied it over onto my
> > boot partition of the SD card. neccessary proprietary broadcom
> > bootloader files are present.
> >
> > Now when I try and turn the raspi on, it just shows the color splash
> > screen on HDMI and prints out unreadable, strange characters on UART
> > console. they are not always the same.
> > (I try to append an Image)
> >
> > the same happens with hello.exe and the older RTEMS 4.11.
> >
> > Normally the Raspberry should display readable status messages on UART
> > for approx. 35 seconds and then halt.
> >
> > Maybe somebody here has an Idea whats the issue? Do I have to tell
> > RTEMS (somehow) what serial connection should be used and at what
> > speed it should operate? I am really new to RTEMS and therefore
> > missing even an Idea where to start searching.
> > Or should I ask in devel mailing list too?
> >
> which baud rates did you try? The README file located in
> c/src/lib/libbsp/arm/raspberrypi/README states, you should be able to
> see output on PL011 UART0 at 115200 Baud and 8N1 encoding set to your
> console.
> E.g. /dev/ttyUSB0 is a serial to usb converter ->
> stty -F /dev/ttyUSB0 115200 cs8 -cstopb -parenb
> should fit.
> A framebuffer console should also be available.
>
> > Thanks in advance;
> >
> >
> >
> > _______________________________________________
> > users mailing list
> > users at rtems.org
> > http://lists.rtems.org/mailman/listinfo/users
>
>
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> users at rtems.org
> http://lists.rtems.org/mailman/listinfo/users
>
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