Re: [casper] iBOB tutorial

[Louis Dartez]

Hello Henry,

                         Sorry for taking so long to respond. Yes, it 
was the mux block giving me the error....I'd made sure to change all the 
settings to Roach. I ended up just starting all over and it worked 
beautifully! Thanks a lot for your help. I couldn't have finished the 
tutorial without it.

- Louis Dartez
(956) 372-5812

Arecibo Remote Command Center Scholar
Center for Gravitational Wave Astronomy
University of Texas at Brownsville


On 8/8/11 8:52 PM, Henry Chen wrote:
Hi Louis,

The only blocks that should care whether you're using a ROACH or an
IBOB are the XSG core config block where you select the hardware
platform and the GPIO blocks where you choose the IO group. Any of
the internal logic blocks should work with no changes... Can you
confirm that it's actually the mux block giving you this error?

Thanks,
Henry

On 8/8/2011 6:44 PM, Louis Dartez wrote:
Hello Henry,

            Thanks! This in fact fixed it. Simulink stopped shooting me
the errors. Can't believe this got past me! When I tried to re-run the
simulation after fixing this I got error saying that the mux (Xilinx Bus
Multiplexer) block needs to driven by an iBOB generator...not a ROACH
one... are there any alternative blocks that I could use in its place
that would also work with Roach? Or is it more likely the case that I
won't be able to complete this tutorial without the actual iBOB board?

On Mon, Aug 8, 2011 at 8:36 PM, Henry Chen <hche...@ssl.berkeley.edu
<mailto:hche...@ssl.berkeley.edu>> wrote:

    Hi Louis,

    This error means that you're trying to assign a bit position beyond
    that supported by the particular IO group. In this case, it's 
because
    the ROACH only has 4 user-accessible LEDs, while the IBOB has 8. So
    if you just take out the slices that are giving you trouble, it 
should
    be okay.

    Cheers,
    Henry


    On 8/8/2011 6:20 PM, Louis Dartez wrote:

        Hello,

                              I'm trying to get through the IBOB
        tutorial...just
        to get a bunch of led's lit up. Near the end of designing the 
model,
        when trying to link up 8 slices and gpio blocks i get an 
error. The
        first three sets of slices and gpio's don't give me any
        trouble..however
        when I get to the fourth set I get a dialogue box with the
        following:

        "Gateway bit index contain values that exceeds the bitwidth."

        What exactly is it that I'm doing wrong?
        ps. This tutorial is originally meant for the iBOB ..but I'm 
using a
        Roach board....I read that simply switching out iBOB:led to
        ROACH:led on
        the registers should suffice...but that may incorrect.

        Thanks a bunch for the help!

        --
        -- Louis Dartez
        (956) 372-5812 <tel:%28956%29%20372-5812>
        Arecibo Remote Command Center Scholar
        Center for Gravitational Wave Astronomy
        University of Texas at Brownsville




--
-- Louis Dartez
(956) 372-5812
Arecibo Remote Command Center Scholar
Center for Gravitational Wave Astronomy
University of Texas at Brownsville