<div dir="ltr">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. <div><br></div><div>Alan</div><div><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Jul 17, 2017 at 9:15 AM, Andreas Kölbl <span dir="ltr"><<a href="mailto:andreas.koelbl@st.oth-regensburg.de" target="_blank">andreas.koelbl@st.oth-regensburg.de</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span class="">Am 17.07.2017 um 13:29 schrieb William Kirstaedter:<br>
</span><span class="">> Hi @all,<br>
> I hope I am asking in the right mailing list.<br>
><br>
> This probably has already been asked, but I wasnt able to find<br>
> anything suiting my problem case.<br>
><br>
> I want to run RTEMS (and later on EPICS, but this shall not be part of<br>
> this request here) on my Raspberry Pi 2 B.<br>
> So I followed various guides on how to get RTEMS compiled for ARM /<br>
> raspberry pi, and got a seemingly successful build of RTEMS 4.12<br>
> including the sample programs.<br>
> I then made a binary out of the ticker.exe and copied it over onto my<br>
> boot partition of the SD card. neccessary proprietary broadcom<br>
> bootloader files are present.<br>
><br>
> Now when I try and turn the raspi on, it just shows the color splash<br>
> screen on HDMI and prints out unreadable, strange characters on UART<br>
> console. they are not always the same.<br>
> (I try to append an Image)<br>
><br>
</span><span class="">> the same happens with hello.exe and the older RTEMS 4.11.<br>
><br>
> Normally the Raspberry should display readable status messages on UART<br>
> for approx. 35 seconds and then halt.<br>
><br>
> Maybe somebody here has an Idea whats the issue? Do I have to tell<br>
> RTEMS (somehow) what serial connection should be used and at what<br>
> speed it should operate? I am really new to RTEMS and therefore<br>
> missing even an Idea where to start searching.<br>
> Or should I ask in devel mailing list too?<br>
><br>
</span><span class="">which baud rates did you try? The README file located in<br>
c/src/lib/libbsp/arm/<wbr>raspberrypi/README states, you should be able to<br>
see output on PL011 UART0 at 115200 Baud and 8N1 encoding set to your<br>
console.<br>
E.g. /dev/ttyUSB0 is a serial to usb converter -><br>
stty -F /dev/ttyUSB0 115200 cs8 -cstopb -parenb<br>
should fit.<br>
</span>A framebuffer console should also be available.<br>
<div class="HOEnZb"><div class="h5"><br>
> Thanks in advance;<br>
><br>
><br>
><br>
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</div></div></blockquote></div><br></div>