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</o:shapelayout></xml><![endif]--></head><body lang=DE-CH link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Hi, <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>First I would like to introduce myself: the last couple of years I developed software for PCs and embedded systems (always worked on "bare metal" ARM etc. or on a runnung "big" OS). Therefore I never had to use and set up an OS on an embedded system. <span lang=FR-CH>Now I have to evaluate one for a space project which should run on the following hardware:<o:p></o:p></span></p><p class=MsoNormal><span lang=FR-CH><o:p> </o:p></span></p><p class=MsoNormal><span lang=FR-CH>- Xilinx Virtex4, PowerPC405<o:p></o:p></span></p><p class=MsoNormal><span lang=FR-CH>- Evaluationboard: ML410<o:p></o:p></span></p><p class=MsoNormal><span lang=FR-CH>- final design: RAM: max. 192 kB for program and data<o:p></o:p></span></p><p class=MsoNormal><span lang=FR-CH>Our system should support (estimation):<o:p></o:p></span></p><p class=MsoNormal><span lang=FR-CH>- 5 threads<o:p></o:p></span></p><p class=MsoNormal>- accurate system time<o:p></o:p></p><p class=MsoNormal>- around 5 interrupts: peripheral (UARTs + IO)<o:p></o:p></p><p class=MsoNormal>- around 5 mutex<o:p></o:p></p><p class=MsoNormal>- around 5 semaphores<o:p></o:p></p><p class=MsoNormal>- …<o:p></o:p></p><p class=MsoNormal><span lang=FR-CH><o:p> </o:p></span></p><p class=MsoNormal><span lang=FR-CH>I came across the RTEMS project which seems to be very interesting. Since I'm quite unexperienced in setting up such a system, I went through the documentation and some websites which made me build a "running" system:<o:p></o:p></span></p><p class=MsoNormal><span lang=FR-CH><o:p> </o:p></span></p><p class=MsoNormal>- built the rtems system with the system builder:<o:p></o:p></p><p class=MsoNormal>> http://www.rtems.org/ftp/pub/rtems/people/chrisj/source-builder/source-builder.html<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>- set up eclipse inspired by <o:p></o:p></p><p class=MsoNormal>> http://www.rtems.org/pipermail/rtems-users/2012-February/009439.html<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>- working on RTEMS commit e67025e3900f23e1b9a25b939d7bff37a9c5e9f0<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>- made some changes on BSP "virtex"<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>- took the init.c from examples-v2/hello (tested all 3: Classic, POSIX, Classic+POSIX)<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span lang=FR-CH>-> now I've got a "Hello World" application running on the evaluation board using an UART as stdio </span><span lang=FR-CH style='font-family:Wingdings'>J</span><span lang=FR-CH><o:p></o:p></span></p><p class=MsoNormal><span lang=FR-CH><o:p> </o:p></span></p><p class=MsoNormal><span lang=FR-CH><o:p> </o:p></span></p><p class=MsoNormal>So far so good, now my Questions:<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>1. When I try to add some code the system, it does not work anymore. Well, I'm not surprised when I consider my tinkering ;-)<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>2. The test program is only a simple "Hello World" and it already consumes 2/3 of our memory, which is a no-go:<o:p></o:p></p><p class=MsoNormal> <span lang=FR-CH>text data bss dec hex filename<o:p></o:p></span></p><p class=MsoNormal><span lang=FR-CH> 126520 1724 4004 132248 20498 o-optimize/rtems-app.exe<o:p></o:p></span></p><p class=MsoNormal><span lang=FR-CH><o:p> </o:p></span></p><p class=MsoNormal><span lang=FR-CH> Ok, I'm sure that the system I put together is not optimized at all, but I'm still quite surprised...<o:p></o:p></span></p><p class=MsoNormal><span lang=FR-CH><o:p> </o:p></span></p><p class=MsoNormal><span lang=FR-CH>3. I also got stuck (and confused) using interrupts: rtems_interrupt_catch() as mentioned in the RTEMS C User’s Guide seems to be deprecated. </span>Tried the BSP_install_rtems_irq_handler(), but didn't succeed either...<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>4. Most important: To have a good feeling about the correct setup of the system, I would appreciate to get in touch with an expert who helps me to move on setting up for evaluating RTEMS. Where can I get such additional support for our system (http://support.rtems.com/ and http://www.rtems.com/support.html seems to be down)?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thank you very much!<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Kind regards<o:p></o:p></p><p class=MsoNormal>Stefan Gempeler<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>