PSR

psr@rtime.felk.cvut.cz

104 discussions

Problem with uploading solution
by Mykhaylo Zelenskyy 26 Oct '17

26 Oct '17

Hello, When uploading file to BRUTE system, an error "Student is not authorized to download this file." occurs. Regards, Mykhaylo Zelenskyy

4 3

Starting Workbench via ssh
by zelenda3＠fel.cvut.cz 17 Oct '17

17 Oct '17

Dear colleagues and teachers, I am trying to connect to WindRiver from my computer via ssh. The command I use is ssh -x zelenda3(a)postel.felk.cvut.cz With this I reach just my personal files on the server, but I can't find the opt/WindRiver/startWorkbench.sh which should start the program. Please suggest the correct procedure. With Regards David Zelenka

3 3

Zapomenutá nabíječka iPhone
by scukojan＠fel.cvut.cz 30 Jan '17

30 Jan '17

Ahoj/dobrý den, nenašel náhodou někdo zapomenutou nabíječku na iPhone v KN:E-2? Ztratila se v pátek. Jana Ščuková

1 0

Poznamky u zkousky.
by Andrey Albershteyn 17 Jan '17

17 Jan '17

Dobry den, Chtel jsem se zeptat, je-li mozne pouzivat u pisemne casti zkousky vlastni poznamky (ohledne algoritmu)? S Pozdravem, Albershteyn Andrey.

2 1

semestral work deadline
by valenjac＠fel.cvut.cz 15 Jan '17

15 Jan '17

Hello I didn't really understand when is the deadline for the semestral work, can we finish it after the exam on the 18th? Do we have to it to you ? Regards Jacques V -- Jacques Valentin double degree Master Student Faculty of Electrical Engineering, CTU Cybernetics and robotics École Centrale de Lille general engineer school in France +420 776 635 790

3 2

Deadline semestrální úlohy
by David Žaitlík 10 Jan '17

10 Jan '17

Dobrý den, kdy je deadline semestrální úlohy? Děkuji za odpověď a přeji pěkný den David Žaitlík

2 1

forgotten charger
by zahorji2＠fel.cvut.cz 06 Jan '17

06 Jan '17

Today someone forgot charger for apple notebook in KN:E-2 lab. It is at reception. Jiří Záhora

1 0

problem with boards
by zahorji2＠fel.cvut.cz 03 Jan '17

03 Jan '17

Good day, i have problem with connecting board in knE2 lab. vxworks cannot connect the board, in terminal i see only this lines BOOTP broadcast 1 BOOTP broadcast 2 BOOTP broadcast 3 BOOTP broadcast 4 BOOTP broadcast 5 Retry count exceeded; starting again Jiri Zahora

2 1

Hardware moved for holidays to KN:E-2 and optional shared memory VxWorks image on PowerPC
by Pavel Pisa 21 Dec '16

21 Dec '16

Dear students, we have moved the processor boards and motors to the computer laboratory KN:E-2. The hardware remains there until the first seminaries in 2017. The room KN:E-2 at Karlovo namesti is accessible to students without supervisor. If it is locket, ask gatekeeper politely to open it for you. The key for storage locker is available from the gatekeeper as well. Shared memory on PowerPC MIDAM boards Some students designed semestral work as separated motion controller and monitoring application running in separated address spaces- The control part designed as Kernel Loadable Module and TCP communication as separated Real Time Process. That is right approach for professional application for sure but we do not expect such architecture from you. The time is limited etc. Separated threads in a single Kernel Loadable Module are fully fulfilling our expectations. But for these who has tried more secure and isolated solution, we have prepared VxWorks kernel image with shared memory support option enabled during build. It is not booted by default. If you want to check this option then break boot process after the board reset. There is special delay and counting seen on the serial console. Press enter at that time. Then run/copy paste next commands line by line (some delay between lines may be required) dhcp mw f0000b00 ${psc_cfg} tftp 0x100000 vxworks/vxWorks-midam-shm.bin-6.9 go 0x100000 You have to select alternative/corresponding kernel image file with symbols when you create target connection /opt/psr/vxWorks-midam-shm-6.9 Then you can create shared memory regions, mesage-queues and POSIX threads. I suggest these experiments only to these students who are ahead of time with their project and have interest to learn and experiment more than is goal and purpose of the subject. We are happy to support such people. I have done some but minimal testing of the image. I have only checked that semOpen, shm_open and mmap links OK and does not throw error in the both, RTP and KLM. It is possible that there is some unnoticed problem and I do not have time to correct such problem now. So option is available for brave souls with time reserve for backup solution and without guarantee of any kind. If you use this option successfully or notice show stopper problem, it would be nice if you send info to the PSR list. I wish you to enjoy your work, spent holidays hapilly and keep strong health now and in the future, Pavel Pisa

1 0

Hardware access in KN:E-2
by Michal Sojka 18 Dec '16

18 Dec '16

Dear students, as we announced, we have made available 4 boards and motors in room KN:E-2 for you to work at any time. The room is located at Karlovo namesti and is accessible whenever the university is open, which includes even weekends. The keys from the locker are available at building E reception desk. If the whole room is locked, you can ask the reception guy to open it. Currently, there are only 4 Ethernet cables available in the room - look for yellow cables at the back sides of the room. The boards will be available in the room today, until 8 PM. Tomorrow, Mr. Hubacek will bring them to H131. Starting from Sunday, the 4 boards will be again in E2. We will temporarily move them to H131 on Wednesdays for exercises. If you encounter any problems with the boards, motors etc., please let us know immediately so that we can fix the problems quickly. Best regards, -Michal Sojka

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