Actions
Forum Thread Details
  • State Not Answered
  • Replies 10 replies
  • Subscribers 329 subscribers
  • Views 610 views
  • Users 0 members are here
Related

Terminal read from zedboard

deaxman

When using xillinux, I have been using hexdump -C -n 16 /dev/xillybus_mem_8 to read data that is stored to the memory in the zedboard and thus communicate values to the terminal.  This only gives me 2 hex positions at a time though and just repeats those two even though I specified 16 slots.  Is there any way to fix this and get more digits of hex?  Thanks!

Parents
  • 0

    Hi,

    Hexdump is a rich utility, which allows you to print out data in several formats, including custom defined.

    For example, to print out 32-bit words one after another, go

    hexdump -v -e '1/4 "%08x " "
    "'

    The syntax is somewhat tangled, but is nevertheless documented in hexdump's man page:

    http://unixhelp.ed.ac.uk/CGI/man-cgi?hexdump+1

    If you get the same 8-bit value over and over again, it's most likely because that is what the array contains. Or, it's possible that it isn't read correctly. For example, it could be that you didn't connect the address lines correctly to the piece of logic that reads from the array (in the PL part).

    Regards,
       Eli

Reply
  • 0

    Hi,

    Hexdump is a rich utility, which allows you to print out data in several formats, including custom defined.

    For example, to print out 32-bit words one after another, go

    hexdump -v -e '1/4 "%08x " "
    "'

    The syntax is somewhat tangled, but is nevertheless documented in hexdump's man page:

    http://unixhelp.ed.ac.uk/CGI/man-cgi?hexdump+1

    If you get the same 8-bit value over and over again, it's most likely because that is what the array contains. Or, it's possible that it isn't read correctly. For example, it could be that you didn't connect the address lines correctly to the piece of logic that reads from the array (in the PL part).

    Regards,
       Eli

Children
No Data