Re: [beagleboard] elapsed time microseconds c++
Did you use a crosscompiler? You can also compile your code on your beaglebone. 2013/10/5 ignacio.mata...@gmail.com hi, Looks like there is something wrong in eclipse. I compiled the code gettimeofday directly from ubuntu terminal and it works properly. Also the code works in my beaglebone :-) BUT... :-S. I am trying to run my code. It compiles and run under ubuntu but when i try to run in in my beaglebone i got the error: -sh: ./hil: cannot execute binary file I am using the following command in my beaglebone: chmod ugo+x hil ./hil I am using this includes: stdio.h stdlib.h math.h sys/time.h any suggestion? thanks in advance to everybody On Friday, October 4, 2013 5:33:04 PM UTC+2, ignacio...@gmail.com wrote: Hi, My big code compiles properly in eclipse. As you said I started with hello world and small codes. My problems became only measuring elapsed time. With small codes, just to measure elapsed time it still doesn't work. I tried with clock() as i said but the elapsed time showed in the terminal is wrong. Now I am trying with the code supplied by you, because i would like to try with gettimeofday but errors commented before. I will put my compiler, linker and assembler later. I am not in my personal computer now. really thanks for your help. El viernes, 4 de octubre de 2013 16:59:35 UTC+2, Dieter Wirz escribió: Hi Ignacio On Fri, Oct 4, 2013 at 10:06 AM, ignacio...@gmail.com wrote: My aim is program in ansi c my beaglebone black. I am using an ubuntu vm under mac os. I am new in ubuntu and eclipse and this is the main problem, i guess :-S I have a model that i would like to run into BB but i have problems to measure the elapsed time, i tried before with clock(), but looks like it doesn't measure properly the time. For this i am trying with gettimeofday, but i have the problems that i commented previously. Looks like if eclipse could not link time.h and for this appear these errors. But maybe i am wrong Eclipse with an installed crosscompiler is only one way to go and it certainly makes sense if you have a huge Project with thousands of lines of code, X, etc. But I usually code only small terminal programs (in ANSI C) that read in some ports, write to some ports, do some calculations and write the results to a excel readable text file. For such problems I am too lazy to install Eclipse with all the gnuaebi etc. stuff So, I edit and compile my programs directly on BB, usually over ssh and sftp (usually from my Mac, with Cyberduck). The only thing you need on BB is gcc and if you have a bit bigger projects make. Starting with Hello World is always a good idea Connect to your BB with ssh nano helloworld.c type in your code, quit and save with ctrl x gcc -Wall helloworld.c -o helloworld And run your program with ./helloworld you need the ./ for running terminal programs in the same folder Have fun! -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: [beagleboard] elapsed time microseconds c++
Whoops - finger troubles On Mon, Oct 7, 2013 at 8:16 PM, Dave Hylands dhyla...@gmail.com wrote: Hi, On Sat, Oct 5, 2013 at 2:31 AM, ignacio.mata...@gmail.com wrote: hi, Looks like there is something wrong in eclipse. I compiled the code gettimeofday directly from ubuntu terminal and it works properly. Also the code works in my beaglebone :-) BUT... :-S. I am trying to run my code. It compiles and run under ubuntu but when i try to run in in my beaglebone i got the error: -sh: ./hil: cannot execute binary file I am using the following command in my beaglebone: chmod ugo+x hil ./hil I am using this includes: stdio.h stdlib.h math.h sys/time.h any suggestion? thanks in advance to everybody Try using the file command on your program. It will tell whether you built an ARM executable or an x86 executable. x86 executables will produce the error you're seeing when you try to run them on the beagleboard (since the beagleboard uses an ARM processor). file ./hil For example: file /bin/ls on my x86 ubuntu machine shows: /bin/ls: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.24, BuildID[sha1]=0x37cdd635587f519989044055623abff939002027, stripped and file run on an executable for the beagleboad will typically show something like: bash: ELF 32-bit LSB executable, ARM, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.16, not stripped So as Tux mentioned, you're probably using the host compiler instead of the cross compiler to build your program. -- Dave Hylands Shuswap, BC, Canada http://www.davehylands.com -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: [beagleboard] elapsed time microseconds c++
Could you provide us your source, the compiler/linker output and your compile command? 2013/10/4 ignacio.mata...@gmail.com My aim is program in ansi c my beaglebone black. I am using an ubuntu vm under mac os. I am new in ubuntu and eclipse and this is the main problem, i guess :-S I have a model that i would like to run into BB but i have problems to measure the elapsed time, i tried before with clock(), but looks like it doesn't measure properly the time. For this i am trying with gettimeofday, but i have the problems that i commented previously. Looks like if eclipse could not link time.h and for this appear these errors. But maybe i am wrong Really thanks to everybody for your help -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: [beagleboard] elapsed time microseconds c++
On Thu, Oct 3, 2013 at 9:56 PM, ignacio.mata...@gmail.com wrote: the issue is that i can not find gettimeofday.c in ubuntu. I only find You have to save the code I provided as gettimeofday.c. However, I do not see what this has to do with BB(B). Do you want to crosscompile with eclipse, or what are you intending to do??? -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: [beagleboard] elapsed time microseconds c++
On Tue, Oct 1, 2013 at 11:14 PM, ignacio.mata...@gmail.com wrote: hi, Sorry for disturbing you. How can I compile gcc -Wall gettimeofday.c -o gettimeofday in eclipse under ubuntu? I don't know Eclipse too much, I compile such programs in terminal: Open Terminal cd to the folder where gettimeofday.c is type in: gcc -Wall gettimeofday.c -o gettimeofday run the Porgram with ./gettimeofday I got some errors: Field tv_sec could not be resolved Field tv_usec could not be resolved Maybe you have to tell Eclipse: - it is C (not C++) - from where to include sys/time.h HTH -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: [beagleboard] elapsed time microseconds c++
On 09/26/2013 03:36 PM, ignacio.mata...@gmail.com wrote: hello, I tried several ways ( clock(), gettimeofday()..) but I can get the proper way to measure the elapsed time in microseconds. I am using eclipse to program in ansi c. Could anybody help me about how to measure the elapsed time in microsecond? Could it be possible to enclosed the code that I should use? thank you so much and sorry for the inconveniences Regards Hi, use a search engine and look for linux measure time nanoseconds. Also: man clock_gettime regards, Nuno -- http://aeminium.org/nuno/ -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
