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

    I think there were two questions there. As for mem_32, just go ahead. I don't know what you expect to happen, but let's see how it works out for you.

    As for the read_32 issue, as any signals in an HDL language, they can have only one driver (except for tristates, but who uses them?). So obviously, if you want to write to that FIFO, that has to come instead of the loopback that the demo bundle comes with.

    You could always add another pair of streams in the IP Core Factory if you want to keep the loopback. Or you could write some logic to multiplex the two sources (yours and the loopback), but I really wonder why you'd like to do that.

    So it all comes down to trying out a custom core. Have fun!

       Eli

Reply
  • 0

    I think there were two questions there. As for mem_32, just go ahead. I don't know what you expect to happen, but let's see how it works out for you.

    As for the read_32 issue, as any signals in an HDL language, they can have only one driver (except for tristates, but who uses them?). So obviously, if you want to write to that FIFO, that has to come instead of the loopback that the demo bundle comes with.

    You could always add another pair of streams in the IP Core Factory if you want to keep the loopback. Or you could write some logic to multiplex the two sources (yours and the loopback), but I really wonder why you'd like to do that.

    So it all comes down to trying out a custom core. Have fun!

       Eli

Children
No Data