Hello, I expect the only way I'll solve this is through careful experimentation, but I wanted to check to see if anyone had any tips on what might be going on with my iBOB designs. A few days ago, I started having trouble where when I compiled and downloaded a design to the iBOB, "Nothing" would happen, that is no output from the serial port, no response from LWIP, but the LEDs generally behaved as expected for the design. Here is what I know: The board still seems to work fine: When I press the "prog" button, it successfully loads the design stored in the PROM. Also when I load an older design from a few weeks ago, it runs without trouble. However, once I load a newly compiled design I get this odd behavior where the serial port and ethernet ports are unresponsive. Once this happens, if I try to load another design which worked before, the ports remain unresponsive until I press the "prog" button, after which old designs work fine again. When I compile a simple design that basically just connects the ADC to a snap64 block, I can download and run it just fine. However, recompiling a more complicated design like a spectrometer leaves the iBOB unresponsive. A bit file from the same design compiled a while ago still runs fine on the iBOB. I just noticed that the newly compiled spectrometer design is not drawing as much current as the originally compiled, working version.
Any clues as to what I could have messed up with my tool flow? I wonder if I accidentally installed a new conflicting version of cygwin or something like that which is generating corrupt bit files. Thanks, Glenn
